var UniRigViewer = (() => {
  var __defProp = Object.defineProperty;
  var __export = (target, all) => {
    for (var name in all)
      __defProp(target, name, { get: all[name], enumerable: true });
  };

  // three.module.js
  var three_module_exports = {};
  __export(three_module_exports, {
    ACESFilmicToneMapping: () => ACESFilmicToneMapping,
    AddEquation: () => AddEquation,
    AddOperation: () => AddOperation,
    AdditiveAnimationBlendMode: () => AdditiveAnimationBlendMode,
    AdditiveBlending: () => AdditiveBlending,
    AgXToneMapping: () => AgXToneMapping,
    AlphaFormat: () => AlphaFormat,
    AlwaysCompare: () => AlwaysCompare,
    AlwaysDepth: () => AlwaysDepth,
    AlwaysStencilFunc: () => AlwaysStencilFunc,
    AmbientLight: () => AmbientLight,
    AnimationAction: () => AnimationAction,
    AnimationClip: () => AnimationClip,
    AnimationLoader: () => AnimationLoader,
    AnimationMixer: () => AnimationMixer,
    AnimationObjectGroup: () => AnimationObjectGroup,
    AnimationUtils: () => AnimationUtils,
    ArcCurve: () => ArcCurve,
    ArrayCamera: () => ArrayCamera,
    ArrowHelper: () => ArrowHelper,
    AttachedBindMode: () => AttachedBindMode,
    Audio: () => Audio,
    AudioAnalyser: () => AudioAnalyser,
    AudioContext: () => AudioContext,
    AudioListener: () => AudioListener,
    AudioLoader: () => AudioLoader,
    AxesHelper: () => AxesHelper,
    BackSide: () => BackSide,
    BasicDepthPacking: () => BasicDepthPacking,
    BasicShadowMap: () => BasicShadowMap,
    BatchedMesh: () => BatchedMesh,
    Bone: () => Bone,
    BooleanKeyframeTrack: () => BooleanKeyframeTrack,
    Box2: () => Box2,
    Box3: () => Box3,
    Box3Helper: () => Box3Helper,
    BoxGeometry: () => BoxGeometry,
    BoxHelper: () => BoxHelper,
    BufferAttribute: () => BufferAttribute,
    BufferGeometry: () => BufferGeometry,
    BufferGeometryLoader: () => BufferGeometryLoader,
    ByteType: () => ByteType,
    Cache: () => Cache,
    Camera: () => Camera,
    CameraHelper: () => CameraHelper,
    CanvasTexture: () => CanvasTexture,
    CapsuleGeometry: () => CapsuleGeometry,
    CatmullRomCurve3: () => CatmullRomCurve3,
    CineonToneMapping: () => CineonToneMapping,
    CircleGeometry: () => CircleGeometry,
    ClampToEdgeWrapping: () => ClampToEdgeWrapping,
    Clock: () => Clock,
    Color: () => Color,
    ColorKeyframeTrack: () => ColorKeyframeTrack,
    ColorManagement: () => ColorManagement,
    CompressedArrayTexture: () => CompressedArrayTexture,
    CompressedCubeTexture: () => CompressedCubeTexture,
    CompressedTexture: () => CompressedTexture,
    CompressedTextureLoader: () => CompressedTextureLoader,
    ConeGeometry: () => ConeGeometry,
    ConstantAlphaFactor: () => ConstantAlphaFactor,
    ConstantColorFactor: () => ConstantColorFactor,
    CubeCamera: () => CubeCamera,
    CubeReflectionMapping: () => CubeReflectionMapping,
    CubeRefractionMapping: () => CubeRefractionMapping,
    CubeTexture: () => CubeTexture,
    CubeTextureLoader: () => CubeTextureLoader,
    CubeUVReflectionMapping: () => CubeUVReflectionMapping,
    CubicBezierCurve: () => CubicBezierCurve,
    CubicBezierCurve3: () => CubicBezierCurve3,
    CubicInterpolant: () => CubicInterpolant,
    CullFaceBack: () => CullFaceBack,
    CullFaceFront: () => CullFaceFront,
    CullFaceFrontBack: () => CullFaceFrontBack,
    CullFaceNone: () => CullFaceNone,
    Curve: () => Curve,
    CurvePath: () => CurvePath,
    CustomBlending: () => CustomBlending,
    CustomToneMapping: () => CustomToneMapping,
    CylinderGeometry: () => CylinderGeometry,
    Cylindrical: () => Cylindrical,
    Data3DTexture: () => Data3DTexture,
    DataArrayTexture: () => DataArrayTexture,
    DataTexture: () => DataTexture,
    DataTextureLoader: () => DataTextureLoader,
    DataUtils: () => DataUtils,
    DecrementStencilOp: () => DecrementStencilOp,
    DecrementWrapStencilOp: () => DecrementWrapStencilOp,
    DefaultLoadingManager: () => DefaultLoadingManager,
    DepthFormat: () => DepthFormat,
    DepthStencilFormat: () => DepthStencilFormat,
    DepthTexture: () => DepthTexture,
    DetachedBindMode: () => DetachedBindMode,
    DirectionalLight: () => DirectionalLight,
    DirectionalLightHelper: () => DirectionalLightHelper,
    DiscreteInterpolant: () => DiscreteInterpolant,
    DisplayP3ColorSpace: () => DisplayP3ColorSpace,
    DodecahedronGeometry: () => DodecahedronGeometry,
    DoubleSide: () => DoubleSide,
    DstAlphaFactor: () => DstAlphaFactor,
    DstColorFactor: () => DstColorFactor,
    DynamicCopyUsage: () => DynamicCopyUsage,
    DynamicDrawUsage: () => DynamicDrawUsage,
    DynamicReadUsage: () => DynamicReadUsage,
    EdgesGeometry: () => EdgesGeometry,
    EllipseCurve: () => EllipseCurve,
    EqualCompare: () => EqualCompare,
    EqualDepth: () => EqualDepth,
    EqualStencilFunc: () => EqualStencilFunc,
    EquirectangularReflectionMapping: () => EquirectangularReflectionMapping,
    EquirectangularRefractionMapping: () => EquirectangularRefractionMapping,
    Euler: () => Euler,
    EventDispatcher: () => EventDispatcher,
    ExtrudeGeometry: () => ExtrudeGeometry,
    FileLoader: () => FileLoader,
    Float16BufferAttribute: () => Float16BufferAttribute,
    Float32BufferAttribute: () => Float32BufferAttribute,
    Float64BufferAttribute: () => Float64BufferAttribute,
    FloatType: () => FloatType,
    Fog: () => Fog,
    FogExp2: () => FogExp2,
    FramebufferTexture: () => FramebufferTexture,
    FrontSide: () => FrontSide,
    Frustum: () => Frustum,
    GLBufferAttribute: () => GLBufferAttribute,
    GLSL1: () => GLSL1,
    GLSL3: () => GLSL3,
    GreaterCompare: () => GreaterCompare,
    GreaterDepth: () => GreaterDepth,
    GreaterEqualCompare: () => GreaterEqualCompare,
    GreaterEqualDepth: () => GreaterEqualDepth,
    GreaterEqualStencilFunc: () => GreaterEqualStencilFunc,
    GreaterStencilFunc: () => GreaterStencilFunc,
    GridHelper: () => GridHelper,
    Group: () => Group,
    HalfFloatType: () => HalfFloatType,
    HemisphereLight: () => HemisphereLight,
    HemisphereLightHelper: () => HemisphereLightHelper,
    IcosahedronGeometry: () => IcosahedronGeometry,
    ImageBitmapLoader: () => ImageBitmapLoader,
    ImageLoader: () => ImageLoader,
    ImageUtils: () => ImageUtils,
    IncrementStencilOp: () => IncrementStencilOp,
    IncrementWrapStencilOp: () => IncrementWrapStencilOp,
    InstancedBufferAttribute: () => InstancedBufferAttribute,
    InstancedBufferGeometry: () => InstancedBufferGeometry,
    InstancedInterleavedBuffer: () => InstancedInterleavedBuffer,
    InstancedMesh: () => InstancedMesh,
    Int16BufferAttribute: () => Int16BufferAttribute,
    Int32BufferAttribute: () => Int32BufferAttribute,
    Int8BufferAttribute: () => Int8BufferAttribute,
    IntType: () => IntType,
    InterleavedBuffer: () => InterleavedBuffer,
    InterleavedBufferAttribute: () => InterleavedBufferAttribute,
    Interpolant: () => Interpolant,
    InterpolateDiscrete: () => InterpolateDiscrete,
    InterpolateLinear: () => InterpolateLinear,
    InterpolateSmooth: () => InterpolateSmooth,
    InvertStencilOp: () => InvertStencilOp,
    KeepStencilOp: () => KeepStencilOp,
    KeyframeTrack: () => KeyframeTrack,
    LOD: () => LOD,
    LatheGeometry: () => LatheGeometry,
    Layers: () => Layers,
    LessCompare: () => LessCompare,
    LessDepth: () => LessDepth,
    LessEqualCompare: () => LessEqualCompare,
    LessEqualDepth: () => LessEqualDepth,
    LessEqualStencilFunc: () => LessEqualStencilFunc,
    LessStencilFunc: () => LessStencilFunc,
    Light: () => Light,
    LightProbe: () => LightProbe,
    Line: () => Line,
    Line3: () => Line3,
    LineBasicMaterial: () => LineBasicMaterial,
    LineCurve: () => LineCurve,
    LineCurve3: () => LineCurve3,
    LineDashedMaterial: () => LineDashedMaterial,
    LineLoop: () => LineLoop,
    LineSegments: () => LineSegments,
    LinearDisplayP3ColorSpace: () => LinearDisplayP3ColorSpace,
    LinearEncoding: () => LinearEncoding,
    LinearFilter: () => LinearFilter,
    LinearInterpolant: () => LinearInterpolant,
    LinearMipMapLinearFilter: () => LinearMipMapLinearFilter,
    LinearMipMapNearestFilter: () => LinearMipMapNearestFilter,
    LinearMipmapLinearFilter: () => LinearMipmapLinearFilter,
    LinearMipmapNearestFilter: () => LinearMipmapNearestFilter,
    LinearSRGBColorSpace: () => LinearSRGBColorSpace,
    LinearToneMapping: () => LinearToneMapping,
    LinearTransfer: () => LinearTransfer,
    Loader: () => Loader,
    LoaderUtils: () => LoaderUtils,
    LoadingManager: () => LoadingManager,
    LoopOnce: () => LoopOnce,
    LoopPingPong: () => LoopPingPong,
    LoopRepeat: () => LoopRepeat,
    LuminanceAlphaFormat: () => LuminanceAlphaFormat,
    LuminanceFormat: () => LuminanceFormat,
    MOUSE: () => MOUSE,
    Material: () => Material,
    MaterialLoader: () => MaterialLoader,
    MathUtils: () => MathUtils,
    Matrix3: () => Matrix3,
    Matrix4: () => Matrix4,
    MaxEquation: () => MaxEquation,
    Mesh: () => Mesh,
    MeshBasicMaterial: () => MeshBasicMaterial,
    MeshDepthMaterial: () => MeshDepthMaterial,
    MeshDistanceMaterial: () => MeshDistanceMaterial,
    MeshLambertMaterial: () => MeshLambertMaterial,
    MeshMatcapMaterial: () => MeshMatcapMaterial,
    MeshNormalMaterial: () => MeshNormalMaterial,
    MeshPhongMaterial: () => MeshPhongMaterial,
    MeshPhysicalMaterial: () => MeshPhysicalMaterial,
    MeshStandardMaterial: () => MeshStandardMaterial,
    MeshToonMaterial: () => MeshToonMaterial,
    MinEquation: () => MinEquation,
    MirroredRepeatWrapping: () => MirroredRepeatWrapping,
    MixOperation: () => MixOperation,
    MultiplyBlending: () => MultiplyBlending,
    MultiplyOperation: () => MultiplyOperation,
    NearestFilter: () => NearestFilter,
    NearestMipMapLinearFilter: () => NearestMipMapLinearFilter,
    NearestMipMapNearestFilter: () => NearestMipMapNearestFilter,
    NearestMipmapLinearFilter: () => NearestMipmapLinearFilter,
    NearestMipmapNearestFilter: () => NearestMipmapNearestFilter,
    NeverCompare: () => NeverCompare,
    NeverDepth: () => NeverDepth,
    NeverStencilFunc: () => NeverStencilFunc,
    NoBlending: () => NoBlending,
    NoColorSpace: () => NoColorSpace,
    NoToneMapping: () => NoToneMapping,
    NormalAnimationBlendMode: () => NormalAnimationBlendMode,
    NormalBlending: () => NormalBlending,
    NotEqualCompare: () => NotEqualCompare,
    NotEqualDepth: () => NotEqualDepth,
    NotEqualStencilFunc: () => NotEqualStencilFunc,
    NumberKeyframeTrack: () => NumberKeyframeTrack,
    Object3D: () => Object3D,
    ObjectLoader: () => ObjectLoader,
    ObjectSpaceNormalMap: () => ObjectSpaceNormalMap,
    OctahedronGeometry: () => OctahedronGeometry,
    OneFactor: () => OneFactor,
    OneMinusConstantAlphaFactor: () => OneMinusConstantAlphaFactor,
    OneMinusConstantColorFactor: () => OneMinusConstantColorFactor,
    OneMinusDstAlphaFactor: () => OneMinusDstAlphaFactor,
    OneMinusDstColorFactor: () => OneMinusDstColorFactor,
    OneMinusSrcAlphaFactor: () => OneMinusSrcAlphaFactor,
    OneMinusSrcColorFactor: () => OneMinusSrcColorFactor,
    OrthographicCamera: () => OrthographicCamera,
    P3Primaries: () => P3Primaries,
    PCFShadowMap: () => PCFShadowMap,
    PCFSoftShadowMap: () => PCFSoftShadowMap,
    PMREMGenerator: () => PMREMGenerator,
    Path: () => Path,
    PerspectiveCamera: () => PerspectiveCamera,
    Plane: () => Plane,
    PlaneGeometry: () => PlaneGeometry,
    PlaneHelper: () => PlaneHelper,
    PointLight: () => PointLight,
    PointLightHelper: () => PointLightHelper,
    Points: () => Points,
    PointsMaterial: () => PointsMaterial,
    PolarGridHelper: () => PolarGridHelper,
    PolyhedronGeometry: () => PolyhedronGeometry,
    PositionalAudio: () => PositionalAudio,
    PropertyBinding: () => PropertyBinding,
    PropertyMixer: () => PropertyMixer,
    QuadraticBezierCurve: () => QuadraticBezierCurve,
    QuadraticBezierCurve3: () => QuadraticBezierCurve3,
    Quaternion: () => Quaternion,
    QuaternionKeyframeTrack: () => QuaternionKeyframeTrack,
    QuaternionLinearInterpolant: () => QuaternionLinearInterpolant,
    RED_GREEN_RGTC2_Format: () => RED_GREEN_RGTC2_Format,
    RED_RGTC1_Format: () => RED_RGTC1_Format,
    REVISION: () => REVISION,
    RGBADepthPacking: () => RGBADepthPacking,
    RGBAFormat: () => RGBAFormat,
    RGBAIntegerFormat: () => RGBAIntegerFormat,
    RGBA_ASTC_10x10_Format: () => RGBA_ASTC_10x10_Format,
    RGBA_ASTC_10x5_Format: () => RGBA_ASTC_10x5_Format,
    RGBA_ASTC_10x6_Format: () => RGBA_ASTC_10x6_Format,
    RGBA_ASTC_10x8_Format: () => RGBA_ASTC_10x8_Format,
    RGBA_ASTC_12x10_Format: () => RGBA_ASTC_12x10_Format,
    RGBA_ASTC_12x12_Format: () => RGBA_ASTC_12x12_Format,
    RGBA_ASTC_4x4_Format: () => RGBA_ASTC_4x4_Format,
    RGBA_ASTC_5x4_Format: () => RGBA_ASTC_5x4_Format,
    RGBA_ASTC_5x5_Format: () => RGBA_ASTC_5x5_Format,
    RGBA_ASTC_6x5_Format: () => RGBA_ASTC_6x5_Format,
    RGBA_ASTC_6x6_Format: () => RGBA_ASTC_6x6_Format,
    RGBA_ASTC_8x5_Format: () => RGBA_ASTC_8x5_Format,
    RGBA_ASTC_8x6_Format: () => RGBA_ASTC_8x6_Format,
    RGBA_ASTC_8x8_Format: () => RGBA_ASTC_8x8_Format,
    RGBA_BPTC_Format: () => RGBA_BPTC_Format,
    RGBA_ETC2_EAC_Format: () => RGBA_ETC2_EAC_Format,
    RGBA_PVRTC_2BPPV1_Format: () => RGBA_PVRTC_2BPPV1_Format,
    RGBA_PVRTC_4BPPV1_Format: () => RGBA_PVRTC_4BPPV1_Format,
    RGBA_S3TC_DXT1_Format: () => RGBA_S3TC_DXT1_Format,
    RGBA_S3TC_DXT3_Format: () => RGBA_S3TC_DXT3_Format,
    RGBA_S3TC_DXT5_Format: () => RGBA_S3TC_DXT5_Format,
    RGB_BPTC_SIGNED_Format: () => RGB_BPTC_SIGNED_Format,
    RGB_BPTC_UNSIGNED_Format: () => RGB_BPTC_UNSIGNED_Format,
    RGB_ETC1_Format: () => RGB_ETC1_Format,
    RGB_ETC2_Format: () => RGB_ETC2_Format,
    RGB_PVRTC_2BPPV1_Format: () => RGB_PVRTC_2BPPV1_Format,
    RGB_PVRTC_4BPPV1_Format: () => RGB_PVRTC_4BPPV1_Format,
    RGB_S3TC_DXT1_Format: () => RGB_S3TC_DXT1_Format,
    RGFormat: () => RGFormat,
    RGIntegerFormat: () => RGIntegerFormat,
    RawShaderMaterial: () => RawShaderMaterial,
    Ray: () => Ray,
    Raycaster: () => Raycaster,
    Rec709Primaries: () => Rec709Primaries,
    RectAreaLight: () => RectAreaLight,
    RedFormat: () => RedFormat,
    RedIntegerFormat: () => RedIntegerFormat,
    ReinhardToneMapping: () => ReinhardToneMapping,
    RenderTarget: () => RenderTarget,
    RepeatWrapping: () => RepeatWrapping,
    ReplaceStencilOp: () => ReplaceStencilOp,
    ReverseSubtractEquation: () => ReverseSubtractEquation,
    RingGeometry: () => RingGeometry,
    SIGNED_RED_GREEN_RGTC2_Format: () => SIGNED_RED_GREEN_RGTC2_Format,
    SIGNED_RED_RGTC1_Format: () => SIGNED_RED_RGTC1_Format,
    SRGBColorSpace: () => SRGBColorSpace,
    SRGBTransfer: () => SRGBTransfer,
    Scene: () => Scene,
    ShaderChunk: () => ShaderChunk,
    ShaderLib: () => ShaderLib,
    ShaderMaterial: () => ShaderMaterial,
    ShadowMaterial: () => ShadowMaterial,
    Shape: () => Shape,
    ShapeGeometry: () => ShapeGeometry,
    ShapePath: () => ShapePath,
    ShapeUtils: () => ShapeUtils,
    ShortType: () => ShortType,
    Skeleton: () => Skeleton,
    SkeletonHelper: () => SkeletonHelper,
    SkinnedMesh: () => SkinnedMesh,
    Source: () => Source,
    Sphere: () => Sphere,
    SphereGeometry: () => SphereGeometry,
    Spherical: () => Spherical,
    SphericalHarmonics3: () => SphericalHarmonics3,
    SplineCurve: () => SplineCurve,
    SpotLight: () => SpotLight,
    SpotLightHelper: () => SpotLightHelper,
    Sprite: () => Sprite,
    SpriteMaterial: () => SpriteMaterial,
    SrcAlphaFactor: () => SrcAlphaFactor,
    SrcAlphaSaturateFactor: () => SrcAlphaSaturateFactor,
    SrcColorFactor: () => SrcColorFactor,
    StaticCopyUsage: () => StaticCopyUsage,
    StaticDrawUsage: () => StaticDrawUsage,
    StaticReadUsage: () => StaticReadUsage,
    StereoCamera: () => StereoCamera,
    StreamCopyUsage: () => StreamCopyUsage,
    StreamDrawUsage: () => StreamDrawUsage,
    StreamReadUsage: () => StreamReadUsage,
    StringKeyframeTrack: () => StringKeyframeTrack,
    SubtractEquation: () => SubtractEquation,
    SubtractiveBlending: () => SubtractiveBlending,
    TOUCH: () => TOUCH,
    TangentSpaceNormalMap: () => TangentSpaceNormalMap,
    TetrahedronGeometry: () => TetrahedronGeometry,
    Texture: () => Texture,
    TextureLoader: () => TextureLoader,
    TorusGeometry: () => TorusGeometry,
    TorusKnotGeometry: () => TorusKnotGeometry,
    Triangle: () => Triangle,
    TriangleFanDrawMode: () => TriangleFanDrawMode,
    TriangleStripDrawMode: () => TriangleStripDrawMode,
    TrianglesDrawMode: () => TrianglesDrawMode,
    TubeGeometry: () => TubeGeometry,
    TwoPassDoubleSide: () => TwoPassDoubleSide,
    UVMapping: () => UVMapping,
    Uint16BufferAttribute: () => Uint16BufferAttribute,
    Uint32BufferAttribute: () => Uint32BufferAttribute,
    Uint8BufferAttribute: () => Uint8BufferAttribute,
    Uint8ClampedBufferAttribute: () => Uint8ClampedBufferAttribute,
    Uniform: () => Uniform,
    UniformsGroup: () => UniformsGroup,
    UniformsLib: () => UniformsLib,
    UniformsUtils: () => UniformsUtils,
    UnsignedByteType: () => UnsignedByteType,
    UnsignedInt248Type: () => UnsignedInt248Type,
    UnsignedIntType: () => UnsignedIntType,
    UnsignedShort4444Type: () => UnsignedShort4444Type,
    UnsignedShort5551Type: () => UnsignedShort5551Type,
    UnsignedShortType: () => UnsignedShortType,
    VSMShadowMap: () => VSMShadowMap,
    Vector2: () => Vector2,
    Vector3: () => Vector3,
    Vector4: () => Vector4,
    VectorKeyframeTrack: () => VectorKeyframeTrack,
    VideoTexture: () => VideoTexture,
    WebGL1Renderer: () => WebGL1Renderer,
    WebGL3DRenderTarget: () => WebGL3DRenderTarget,
    WebGLArrayRenderTarget: () => WebGLArrayRenderTarget,
    WebGLCoordinateSystem: () => WebGLCoordinateSystem,
    WebGLCubeRenderTarget: () => WebGLCubeRenderTarget,
    WebGLMultipleRenderTargets: () => WebGLMultipleRenderTargets,
    WebGLRenderTarget: () => WebGLRenderTarget,
    WebGLRenderer: () => WebGLRenderer,
    WebGLUtils: () => WebGLUtils,
    WebGPUCoordinateSystem: () => WebGPUCoordinateSystem,
    WireframeGeometry: () => WireframeGeometry,
    WrapAroundEnding: () => WrapAroundEnding,
    ZeroCurvatureEnding: () => ZeroCurvatureEnding,
    ZeroFactor: () => ZeroFactor,
    ZeroSlopeEnding: () => ZeroSlopeEnding,
    ZeroStencilOp: () => ZeroStencilOp,
    _SRGBAFormat: () => _SRGBAFormat,
    createCanvasElement: () => createCanvasElement,
    sRGBEncoding: () => sRGBEncoding
  });
  var REVISION = "160";
  var MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };
  var TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };
  var CullFaceNone = 0;
  var CullFaceBack = 1;
  var CullFaceFront = 2;
  var CullFaceFrontBack = 3;
  var BasicShadowMap = 0;
  var PCFShadowMap = 1;
  var PCFSoftShadowMap = 2;
  var VSMShadowMap = 3;
  var FrontSide = 0;
  var BackSide = 1;
  var DoubleSide = 2;
  var TwoPassDoubleSide = 2;
  var NoBlending = 0;
  var NormalBlending = 1;
  var AdditiveBlending = 2;
  var SubtractiveBlending = 3;
  var MultiplyBlending = 4;
  var CustomBlending = 5;
  var AddEquation = 100;
  var SubtractEquation = 101;
  var ReverseSubtractEquation = 102;
  var MinEquation = 103;
  var MaxEquation = 104;
  var ZeroFactor = 200;
  var OneFactor = 201;
  var SrcColorFactor = 202;
  var OneMinusSrcColorFactor = 203;
  var SrcAlphaFactor = 204;
  var OneMinusSrcAlphaFactor = 205;
  var DstAlphaFactor = 206;
  var OneMinusDstAlphaFactor = 207;
  var DstColorFactor = 208;
  var OneMinusDstColorFactor = 209;
  var SrcAlphaSaturateFactor = 210;
  var ConstantColorFactor = 211;
  var OneMinusConstantColorFactor = 212;
  var ConstantAlphaFactor = 213;
  var OneMinusConstantAlphaFactor = 214;
  var NeverDepth = 0;
  var AlwaysDepth = 1;
  var LessDepth = 2;
  var LessEqualDepth = 3;
  var EqualDepth = 4;
  var GreaterEqualDepth = 5;
  var GreaterDepth = 6;
  var NotEqualDepth = 7;
  var MultiplyOperation = 0;
  var MixOperation = 1;
  var AddOperation = 2;
  var NoToneMapping = 0;
  var LinearToneMapping = 1;
  var ReinhardToneMapping = 2;
  var CineonToneMapping = 3;
  var ACESFilmicToneMapping = 4;
  var CustomToneMapping = 5;
  var AgXToneMapping = 6;
  var AttachedBindMode = "attached";
  var DetachedBindMode = "detached";
  var UVMapping = 300;
  var CubeReflectionMapping = 301;
  var CubeRefractionMapping = 302;
  var EquirectangularReflectionMapping = 303;
  var EquirectangularRefractionMapping = 304;
  var CubeUVReflectionMapping = 306;
  var RepeatWrapping = 1e3;
  var ClampToEdgeWrapping = 1001;
  var MirroredRepeatWrapping = 1002;
  var NearestFilter = 1003;
  var NearestMipmapNearestFilter = 1004;
  var NearestMipMapNearestFilter = 1004;
  var NearestMipmapLinearFilter = 1005;
  var NearestMipMapLinearFilter = 1005;
  var LinearFilter = 1006;
  var LinearMipmapNearestFilter = 1007;
  var LinearMipMapNearestFilter = 1007;
  var LinearMipmapLinearFilter = 1008;
  var LinearMipMapLinearFilter = 1008;
  var UnsignedByteType = 1009;
  var ByteType = 1010;
  var ShortType = 1011;
  var UnsignedShortType = 1012;
  var IntType = 1013;
  var UnsignedIntType = 1014;
  var FloatType = 1015;
  var HalfFloatType = 1016;
  var UnsignedShort4444Type = 1017;
  var UnsignedShort5551Type = 1018;
  var UnsignedInt248Type = 1020;
  var AlphaFormat = 1021;
  var RGBAFormat = 1023;
  var LuminanceFormat = 1024;
  var LuminanceAlphaFormat = 1025;
  var DepthFormat = 1026;
  var DepthStencilFormat = 1027;
  var RedFormat = 1028;
  var RedIntegerFormat = 1029;
  var RGFormat = 1030;
  var RGIntegerFormat = 1031;
  var RGBAIntegerFormat = 1033;
  var RGB_S3TC_DXT1_Format = 33776;
  var RGBA_S3TC_DXT1_Format = 33777;
  var RGBA_S3TC_DXT3_Format = 33778;
  var RGBA_S3TC_DXT5_Format = 33779;
  var RGB_PVRTC_4BPPV1_Format = 35840;
  var RGB_PVRTC_2BPPV1_Format = 35841;
  var RGBA_PVRTC_4BPPV1_Format = 35842;
  var RGBA_PVRTC_2BPPV1_Format = 35843;
  var RGB_ETC1_Format = 36196;
  var RGB_ETC2_Format = 37492;
  var RGBA_ETC2_EAC_Format = 37496;
  var RGBA_ASTC_4x4_Format = 37808;
  var RGBA_ASTC_5x4_Format = 37809;
  var RGBA_ASTC_5x5_Format = 37810;
  var RGBA_ASTC_6x5_Format = 37811;
  var RGBA_ASTC_6x6_Format = 37812;
  var RGBA_ASTC_8x5_Format = 37813;
  var RGBA_ASTC_8x6_Format = 37814;
  var RGBA_ASTC_8x8_Format = 37815;
  var RGBA_ASTC_10x5_Format = 37816;
  var RGBA_ASTC_10x6_Format = 37817;
  var RGBA_ASTC_10x8_Format = 37818;
  var RGBA_ASTC_10x10_Format = 37819;
  var RGBA_ASTC_12x10_Format = 37820;
  var RGBA_ASTC_12x12_Format = 37821;
  var RGBA_BPTC_Format = 36492;
  var RGB_BPTC_SIGNED_Format = 36494;
  var RGB_BPTC_UNSIGNED_Format = 36495;
  var RED_RGTC1_Format = 36283;
  var SIGNED_RED_RGTC1_Format = 36284;
  var RED_GREEN_RGTC2_Format = 36285;
  var SIGNED_RED_GREEN_RGTC2_Format = 36286;
  var LoopOnce = 2200;
  var LoopRepeat = 2201;
  var LoopPingPong = 2202;
  var InterpolateDiscrete = 2300;
  var InterpolateLinear = 2301;
  var InterpolateSmooth = 2302;
  var ZeroCurvatureEnding = 2400;
  var ZeroSlopeEnding = 2401;
  var WrapAroundEnding = 2402;
  var NormalAnimationBlendMode = 2500;
  var AdditiveAnimationBlendMode = 2501;
  var TrianglesDrawMode = 0;
  var TriangleStripDrawMode = 1;
  var TriangleFanDrawMode = 2;
  var LinearEncoding = 3e3;
  var sRGBEncoding = 3001;
  var BasicDepthPacking = 3200;
  var RGBADepthPacking = 3201;
  var TangentSpaceNormalMap = 0;
  var ObjectSpaceNormalMap = 1;
  var NoColorSpace = "";
  var SRGBColorSpace = "srgb";
  var LinearSRGBColorSpace = "srgb-linear";
  var DisplayP3ColorSpace = "display-p3";
  var LinearDisplayP3ColorSpace = "display-p3-linear";
  var LinearTransfer = "linear";
  var SRGBTransfer = "srgb";
  var Rec709Primaries = "rec709";
  var P3Primaries = "p3";
  var ZeroStencilOp = 0;
  var KeepStencilOp = 7680;
  var ReplaceStencilOp = 7681;
  var IncrementStencilOp = 7682;
  var DecrementStencilOp = 7683;
  var IncrementWrapStencilOp = 34055;
  var DecrementWrapStencilOp = 34056;
  var InvertStencilOp = 5386;
  var NeverStencilFunc = 512;
  var LessStencilFunc = 513;
  var EqualStencilFunc = 514;
  var LessEqualStencilFunc = 515;
  var GreaterStencilFunc = 516;
  var NotEqualStencilFunc = 517;
  var GreaterEqualStencilFunc = 518;
  var AlwaysStencilFunc = 519;
  var NeverCompare = 512;
  var LessCompare = 513;
  var EqualCompare = 514;
  var LessEqualCompare = 515;
  var GreaterCompare = 516;
  var NotEqualCompare = 517;
  var GreaterEqualCompare = 518;
  var AlwaysCompare = 519;
  var StaticDrawUsage = 35044;
  var DynamicDrawUsage = 35048;
  var StreamDrawUsage = 35040;
  var StaticReadUsage = 35045;
  var DynamicReadUsage = 35049;
  var StreamReadUsage = 35041;
  var StaticCopyUsage = 35046;
  var DynamicCopyUsage = 35050;
  var StreamCopyUsage = 35042;
  var GLSL1 = "100";
  var GLSL3 = "300 es";
  var _SRGBAFormat = 1035;
  var WebGLCoordinateSystem = 2e3;
  var WebGPUCoordinateSystem = 2001;
  var EventDispatcher = class {
    addEventListener(type, listener) {
      if (this._listeners === void 0) this._listeners = {};
      const listeners = this._listeners;
      if (listeners[type] === void 0) {
        listeners[type] = [];
      }
      if (listeners[type].indexOf(listener) === -1) {
        listeners[type].push(listener);
      }
    }
    hasEventListener(type, listener) {
      if (this._listeners === void 0) return false;
      const listeners = this._listeners;
      return listeners[type] !== void 0 && listeners[type].indexOf(listener) !== -1;
    }
    removeEventListener(type, listener) {
      if (this._listeners === void 0) return;
      const listeners = this._listeners;
      const listenerArray = listeners[type];
      if (listenerArray !== void 0) {
        const index = listenerArray.indexOf(listener);
        if (index !== -1) {
          listenerArray.splice(index, 1);
        }
      }
    }
    dispatchEvent(event) {
      if (this._listeners === void 0) return;
      const listeners = this._listeners;
      const listenerArray = listeners[event.type];
      if (listenerArray !== void 0) {
        event.target = this;
        const array = listenerArray.slice(0);
        for (let i = 0, l = array.length; i < l; i++) {
          array[i].call(this, event);
        }
        event.target = null;
      }
    }
  };
  var _lut = ["00", "01", "02", "03", "04", "05", "06", "07", "08", "09", "0a", "0b", "0c", "0d", "0e", "0f", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "1a", "1b", "1c", "1d", "1e", "1f", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "2a", "2b", "2c", "2d", "2e", "2f", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "3a", "3b", "3c", "3d", "3e", "3f", "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "4a", "4b", "4c", "4d", "4e", "4f", "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", "5a", "5b", "5c", "5d", "5e", "5f", "60", "61", "62", "63", "64", "65", "66", "67", "68", "69", "6a", "6b", "6c", "6d", "6e", "6f", "70", "71", "72", "73", "74", "75", "76", "77", "78", "79", "7a", "7b", "7c", "7d", "7e", "7f", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89", "8a", "8b", "8c", "8d", "8e", "8f", "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", "9a", "9b", "9c", "9d", "9e", "9f", "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "a8", "a9", "aa", "ab", "ac", "ad", "ae", "af", "b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7", "b8", "b9", "ba", "bb", "bc", "bd", "be", "bf", "c0", "c1", "c2", "c3", "c4", "c5", "c6", "c7", "c8", "c9", "ca", "cb", "cc", "cd", "ce", "cf", "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", "d8", "d9", "da", "db", "dc", "dd", "de", "df", "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7", "e8", "e9", "ea", "eb", "ec", "ed", "ee", "ef", "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9", "fa", "fb", "fc", "fd", "fe", "ff"];
  var _seed = 1234567;
  var DEG2RAD = Math.PI / 180;
  var RAD2DEG = 180 / Math.PI;
  function generateUUID() {
    const d0 = Math.random() * 4294967295 | 0;
    const d1 = Math.random() * 4294967295 | 0;
    const d2 = Math.random() * 4294967295 | 0;
    const d3 = Math.random() * 4294967295 | 0;
    const uuid = _lut[d0 & 255] + _lut[d0 >> 8 & 255] + _lut[d0 >> 16 & 255] + _lut[d0 >> 24 & 255] + "-" + _lut[d1 & 255] + _lut[d1 >> 8 & 255] + "-" + _lut[d1 >> 16 & 15 | 64] + _lut[d1 >> 24 & 255] + "-" + _lut[d2 & 63 | 128] + _lut[d2 >> 8 & 255] + "-" + _lut[d2 >> 16 & 255] + _lut[d2 >> 24 & 255] + _lut[d3 & 255] + _lut[d3 >> 8 & 255] + _lut[d3 >> 16 & 255] + _lut[d3 >> 24 & 255];
    return uuid.toLowerCase();
  }
  function clamp(value, min, max2) {
    return Math.max(min, Math.min(max2, value));
  }
  function euclideanModulo(n, m) {
    return (n % m + m) % m;
  }
  function mapLinear(x, a1, a2, b1, b2) {
    return b1 + (x - a1) * (b2 - b1) / (a2 - a1);
  }
  function inverseLerp(x, y, value) {
    if (x !== y) {
      return (value - x) / (y - x);
    } else {
      return 0;
    }
  }
  function lerp(x, y, t) {
    return (1 - t) * x + t * y;
  }
  function damp(x, y, lambda, dt) {
    return lerp(x, y, 1 - Math.exp(-lambda * dt));
  }
  function pingpong(x, length = 1) {
    return length - Math.abs(euclideanModulo(x, length * 2) - length);
  }
  function smoothstep(x, min, max2) {
    if (x <= min) return 0;
    if (x >= max2) return 1;
    x = (x - min) / (max2 - min);
    return x * x * (3 - 2 * x);
  }
  function smootherstep(x, min, max2) {
    if (x <= min) return 0;
    if (x >= max2) return 1;
    x = (x - min) / (max2 - min);
    return x * x * x * (x * (x * 6 - 15) + 10);
  }
  function randInt(low, high) {
    return low + Math.floor(Math.random() * (high - low + 1));
  }
  function randFloat(low, high) {
    return low + Math.random() * (high - low);
  }
  function randFloatSpread(range) {
    return range * (0.5 - Math.random());
  }
  function seededRandom(s) {
    if (s !== void 0) _seed = s;
    let t = _seed += 1831565813;
    t = Math.imul(t ^ t >>> 15, t | 1);
    t ^= t + Math.imul(t ^ t >>> 7, t | 61);
    return ((t ^ t >>> 14) >>> 0) / 4294967296;
  }
  function degToRad(degrees) {
    return degrees * DEG2RAD;
  }
  function radToDeg(radians) {
    return radians * RAD2DEG;
  }
  function isPowerOfTwo(value) {
    return (value & value - 1) === 0 && value !== 0;
  }
  function ceilPowerOfTwo(value) {
    return Math.pow(2, Math.ceil(Math.log(value) / Math.LN2));
  }
  function floorPowerOfTwo(value) {
    return Math.pow(2, Math.floor(Math.log(value) / Math.LN2));
  }
  function setQuaternionFromProperEuler(q, a, b, c, order) {
    const cos = Math.cos;
    const sin = Math.sin;
    const c2 = cos(b / 2);
    const s2 = sin(b / 2);
    const c13 = cos((a + c) / 2);
    const s13 = sin((a + c) / 2);
    const c1_3 = cos((a - c) / 2);
    const s1_3 = sin((a - c) / 2);
    const c3_1 = cos((c - a) / 2);
    const s3_1 = sin((c - a) / 2);
    switch (order) {
      case "XYX":
        q.set(c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13);
        break;
      case "YZY":
        q.set(s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13);
        break;
      case "ZXZ":
        q.set(s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13);
        break;
      case "XZX":
        q.set(c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13);
        break;
      case "YXY":
        q.set(s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13);
        break;
      case "ZYZ":
        q.set(s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13);
        break;
      default:
        console.warn("THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: " + order);
    }
  }
  function denormalize(value, array) {
    switch (array.constructor) {
      case Float32Array:
        return value;
      case Uint32Array:
        return value / 4294967295;
      case Uint16Array:
        return value / 65535;
      case Uint8Array:
        return value / 255;
      case Int32Array:
        return Math.max(value / 2147483647, -1);
      case Int16Array:
        return Math.max(value / 32767, -1);
      case Int8Array:
        return Math.max(value / 127, -1);
      default:
        throw new Error("Invalid component type.");
    }
  }
  function normalize(value, array) {
    switch (array.constructor) {
      case Float32Array:
        return value;
      case Uint32Array:
        return Math.round(value * 4294967295);
      case Uint16Array:
        return Math.round(value * 65535);
      case Uint8Array:
        return Math.round(value * 255);
      case Int32Array:
        return Math.round(value * 2147483647);
      case Int16Array:
        return Math.round(value * 32767);
      case Int8Array:
        return Math.round(value * 127);
      default:
        throw new Error("Invalid component type.");
    }
  }
  var MathUtils = {
    DEG2RAD,
    RAD2DEG,
    generateUUID,
    clamp,
    euclideanModulo,
    mapLinear,
    inverseLerp,
    lerp,
    damp,
    pingpong,
    smoothstep,
    smootherstep,
    randInt,
    randFloat,
    randFloatSpread,
    seededRandom,
    degToRad,
    radToDeg,
    isPowerOfTwo,
    ceilPowerOfTwo,
    floorPowerOfTwo,
    setQuaternionFromProperEuler,
    normalize,
    denormalize
  };
  var Vector2 = class _Vector2 {
    constructor(x = 0, y = 0) {
      _Vector2.prototype.isVector2 = true;
      this.x = x;
      this.y = y;
    }
    get width() {
      return this.x;
    }
    set width(value) {
      this.x = value;
    }
    get height() {
      return this.y;
    }
    set height(value) {
      this.y = value;
    }
    set(x, y) {
      this.x = x;
      this.y = y;
      return this;
    }
    setScalar(scalar) {
      this.x = scalar;
      this.y = scalar;
      return this;
    }
    setX(x) {
      this.x = x;
      return this;
    }
    setY(y) {
      this.y = y;
      return this;
    }
    setComponent(index, value) {
      switch (index) {
        case 0:
          this.x = value;
          break;
        case 1:
          this.y = value;
          break;
        default:
          throw new Error("index is out of range: " + index);
      }
      return this;
    }
    getComponent(index) {
      switch (index) {
        case 0:
          return this.x;
        case 1:
          return this.y;
        default:
          throw new Error("index is out of range: " + index);
      }
    }
    clone() {
      return new this.constructor(this.x, this.y);
    }
    copy(v) {
      this.x = v.x;
      this.y = v.y;
      return this;
    }
    add(v) {
      this.x += v.x;
      this.y += v.y;
      return this;
    }
    addScalar(s) {
      this.x += s;
      this.y += s;
      return this;
    }
    addVectors(a, b) {
      this.x = a.x + b.x;
      this.y = a.y + b.y;
      return this;
    }
    addScaledVector(v, s) {
      this.x += v.x * s;
      this.y += v.y * s;
      return this;
    }
    sub(v) {
      this.x -= v.x;
      this.y -= v.y;
      return this;
    }
    subScalar(s) {
      this.x -= s;
      this.y -= s;
      return this;
    }
    subVectors(a, b) {
      this.x = a.x - b.x;
      this.y = a.y - b.y;
      return this;
    }
    multiply(v) {
      this.x *= v.x;
      this.y *= v.y;
      return this;
    }
    multiplyScalar(scalar) {
      this.x *= scalar;
      this.y *= scalar;
      return this;
    }
    divide(v) {
      this.x /= v.x;
      this.y /= v.y;
      return this;
    }
    divideScalar(scalar) {
      return this.multiplyScalar(1 / scalar);
    }
    applyMatrix3(m) {
      const x = this.x, y = this.y;
      const e = m.elements;
      this.x = e[0] * x + e[3] * y + e[6];
      this.y = e[1] * x + e[4] * y + e[7];
      return this;
    }
    min(v) {
      this.x = Math.min(this.x, v.x);
      this.y = Math.min(this.y, v.y);
      return this;
    }
    max(v) {
      this.x = Math.max(this.x, v.x);
      this.y = Math.max(this.y, v.y);
      return this;
    }
    clamp(min, max2) {
      this.x = Math.max(min.x, Math.min(max2.x, this.x));
      this.y = Math.max(min.y, Math.min(max2.y, this.y));
      return this;
    }
    clampScalar(minVal, maxVal) {
      this.x = Math.max(minVal, Math.min(maxVal, this.x));
      this.y = Math.max(minVal, Math.min(maxVal, this.y));
      return this;
    }
    clampLength(min, max2) {
      const length = this.length();
      return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max2, length)));
    }
    floor() {
      this.x = Math.floor(this.x);
      this.y = Math.floor(this.y);
      return this;
    }
    ceil() {
      this.x = Math.ceil(this.x);
      this.y = Math.ceil(this.y);
      return this;
    }
    round() {
      this.x = Math.round(this.x);
      this.y = Math.round(this.y);
      return this;
    }
    roundToZero() {
      this.x = Math.trunc(this.x);
      this.y = Math.trunc(this.y);
      return this;
    }
    negate() {
      this.x = -this.x;
      this.y = -this.y;
      return this;
    }
    dot(v) {
      return this.x * v.x + this.y * v.y;
    }
    cross(v) {
      return this.x * v.y - this.y * v.x;
    }
    lengthSq() {
      return this.x * this.x + this.y * this.y;
    }
    length() {
      return Math.sqrt(this.x * this.x + this.y * this.y);
    }
    manhattanLength() {
      return Math.abs(this.x) + Math.abs(this.y);
    }
    normalize() {
      return this.divideScalar(this.length() || 1);
    }
    angle() {
      const angle = Math.atan2(-this.y, -this.x) + Math.PI;
      return angle;
    }
    angleTo(v) {
      const denominator = Math.sqrt(this.lengthSq() * v.lengthSq());
      if (denominator === 0) return Math.PI / 2;
      const theta = this.dot(v) / denominator;
      return Math.acos(clamp(theta, -1, 1));
    }
    distanceTo(v) {
      return Math.sqrt(this.distanceToSquared(v));
    }
    distanceToSquared(v) {
      const dx = this.x - v.x, dy = this.y - v.y;
      return dx * dx + dy * dy;
    }
    manhattanDistanceTo(v) {
      return Math.abs(this.x - v.x) + Math.abs(this.y - v.y);
    }
    setLength(length) {
      return this.normalize().multiplyScalar(length);
    }
    lerp(v, alpha) {
      this.x += (v.x - this.x) * alpha;
      this.y += (v.y - this.y) * alpha;
      return this;
    }
    lerpVectors(v1, v2, alpha) {
      this.x = v1.x + (v2.x - v1.x) * alpha;
      this.y = v1.y + (v2.y - v1.y) * alpha;
      return this;
    }
    equals(v) {
      return v.x === this.x && v.y === this.y;
    }
    fromArray(array, offset = 0) {
      this.x = array[offset];
      this.y = array[offset + 1];
      return this;
    }
    toArray(array = [], offset = 0) {
      array[offset] = this.x;
      array[offset + 1] = this.y;
      return array;
    }
    fromBufferAttribute(attribute, index) {
      this.x = attribute.getX(index);
      this.y = attribute.getY(index);
      return this;
    }
    rotateAround(center, angle) {
      const c = Math.cos(angle), s = Math.sin(angle);
      const x = this.x - center.x;
      const y = this.y - center.y;
      this.x = x * c - y * s + center.x;
      this.y = x * s + y * c + center.y;
      return this;
    }
    random() {
      this.x = Math.random();
      this.y = Math.random();
      return this;
    }
    *[Symbol.iterator]() {
      yield this.x;
      yield this.y;
    }
  };
  var Matrix3 = class _Matrix3 {
    constructor(n11, n12, n13, n21, n22, n23, n31, n32, n33) {
      _Matrix3.prototype.isMatrix3 = true;
      this.elements = [
        1,
        0,
        0,
        0,
        1,
        0,
        0,
        0,
        1
      ];
      if (n11 !== void 0) {
        this.set(n11, n12, n13, n21, n22, n23, n31, n32, n33);
      }
    }
    set(n11, n12, n13, n21, n22, n23, n31, n32, n33) {
      const te = this.elements;
      te[0] = n11;
      te[1] = n21;
      te[2] = n31;
      te[3] = n12;
      te[4] = n22;
      te[5] = n32;
      te[6] = n13;
      te[7] = n23;
      te[8] = n33;
      return this;
    }
    identity() {
      this.set(
        1,
        0,
        0,
        0,
        1,
        0,
        0,
        0,
        1
      );
      return this;
    }
    copy(m) {
      const te = this.elements;
      const me = m.elements;
      te[0] = me[0];
      te[1] = me[1];
      te[2] = me[2];
      te[3] = me[3];
      te[4] = me[4];
      te[5] = me[5];
      te[6] = me[6];
      te[7] = me[7];
      te[8] = me[8];
      return this;
    }
    extractBasis(xAxis, yAxis, zAxis) {
      xAxis.setFromMatrix3Column(this, 0);
      yAxis.setFromMatrix3Column(this, 1);
      zAxis.setFromMatrix3Column(this, 2);
      return this;
    }
    setFromMatrix4(m) {
      const me = m.elements;
      this.set(
        me[0],
        me[4],
        me[8],
        me[1],
        me[5],
        me[9],
        me[2],
        me[6],
        me[10]
      );
      return this;
    }
    multiply(m) {
      return this.multiplyMatrices(this, m);
    }
    premultiply(m) {
      return this.multiplyMatrices(m, this);
    }
    multiplyMatrices(a, b) {
      const ae = a.elements;
      const be = b.elements;
      const te = this.elements;
      const a11 = ae[0], a12 = ae[3], a13 = ae[6];
      const a21 = ae[1], a22 = ae[4], a23 = ae[7];
      const a31 = ae[2], a32 = ae[5], a33 = ae[8];
      const b11 = be[0], b12 = be[3], b13 = be[6];
      const b21 = be[1], b22 = be[4], b23 = be[7];
      const b31 = be[2], b32 = be[5], b33 = be[8];
      te[0] = a11 * b11 + a12 * b21 + a13 * b31;
      te[3] = a11 * b12 + a12 * b22 + a13 * b32;
      te[6] = a11 * b13 + a12 * b23 + a13 * b33;
      te[1] = a21 * b11 + a22 * b21 + a23 * b31;
      te[4] = a21 * b12 + a22 * b22 + a23 * b32;
      te[7] = a21 * b13 + a22 * b23 + a23 * b33;
      te[2] = a31 * b11 + a32 * b21 + a33 * b31;
      te[5] = a31 * b12 + a32 * b22 + a33 * b32;
      te[8] = a31 * b13 + a32 * b23 + a33 * b33;
      return this;
    }
    multiplyScalar(s) {
      const te = this.elements;
      te[0] *= s;
      te[3] *= s;
      te[6] *= s;
      te[1] *= s;
      te[4] *= s;
      te[7] *= s;
      te[2] *= s;
      te[5] *= s;
      te[8] *= s;
      return this;
    }
    determinant() {
      const te = this.elements;
      const a = te[0], b = te[1], c = te[2], d = te[3], e = te[4], f = te[5], g = te[6], h = te[7], i = te[8];
      return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
    }
    invert() {
      const te = this.elements, n11 = te[0], n21 = te[1], n31 = te[2], n12 = te[3], n22 = te[4], n32 = te[5], n13 = te[6], n23 = te[7], n33 = te[8], t11 = n33 * n22 - n32 * n23, t12 = n32 * n13 - n33 * n12, t13 = n23 * n12 - n22 * n13, det = n11 * t11 + n21 * t12 + n31 * t13;
      if (det === 0) return this.set(0, 0, 0, 0, 0, 0, 0, 0, 0);
      const detInv = 1 / det;
      te[0] = t11 * detInv;
      te[1] = (n31 * n23 - n33 * n21) * detInv;
      te[2] = (n32 * n21 - n31 * n22) * detInv;
      te[3] = t12 * detInv;
      te[4] = (n33 * n11 - n31 * n13) * detInv;
      te[5] = (n31 * n12 - n32 * n11) * detInv;
      te[6] = t13 * detInv;
      te[7] = (n21 * n13 - n23 * n11) * detInv;
      te[8] = (n22 * n11 - n21 * n12) * detInv;
      return this;
    }
    transpose() {
      let tmp2;
      const m = this.elements;
      tmp2 = m[1];
      m[1] = m[3];
      m[3] = tmp2;
      tmp2 = m[2];
      m[2] = m[6];
      m[6] = tmp2;
      tmp2 = m[5];
      m[5] = m[7];
      m[7] = tmp2;
      return this;
    }
    getNormalMatrix(matrix4) {
      return this.setFromMatrix4(matrix4).invert().transpose();
    }
    transposeIntoArray(r) {
      const m = this.elements;
      r[0] = m[0];
      r[1] = m[3];
      r[2] = m[6];
      r[3] = m[1];
      r[4] = m[4];
      r[5] = m[7];
      r[6] = m[2];
      r[7] = m[5];
      r[8] = m[8];
      return this;
    }
    setUvTransform(tx, ty, sx, sy, rotation, cx, cy) {
      const c = Math.cos(rotation);
      const s = Math.sin(rotation);
      this.set(
        sx * c,
        sx * s,
        -sx * (c * cx + s * cy) + cx + tx,
        -sy * s,
        sy * c,
        -sy * (-s * cx + c * cy) + cy + ty,
        0,
        0,
        1
      );
      return this;
    }
    //
    scale(sx, sy) {
      this.premultiply(_m3.makeScale(sx, sy));
      return this;
    }
    rotate(theta) {
      this.premultiply(_m3.makeRotation(-theta));
      return this;
    }
    translate(tx, ty) {
      this.premultiply(_m3.makeTranslation(tx, ty));
      return this;
    }
    // for 2D Transforms
    makeTranslation(x, y) {
      if (x.isVector2) {
        this.set(
          1,
          0,
          x.x,
          0,
          1,
          x.y,
          0,
          0,
          1
        );
      } else {
        this.set(
          1,
          0,
          x,
          0,
          1,
          y,
          0,
          0,
          1
        );
      }
      return this;
    }
    makeRotation(theta) {
      const c = Math.cos(theta);
      const s = Math.sin(theta);
      this.set(
        c,
        -s,
        0,
        s,
        c,
        0,
        0,
        0,
        1
      );
      return this;
    }
    makeScale(x, y) {
      this.set(
        x,
        0,
        0,
        0,
        y,
        0,
        0,
        0,
        1
      );
      return this;
    }
    //
    equals(matrix) {
      const te = this.elements;
      const me = matrix.elements;
      for (let i = 0; i < 9; i++) {
        if (te[i] !== me[i]) return false;
      }
      return true;
    }
    fromArray(array, offset = 0) {
      for (let i = 0; i < 9; i++) {
        this.elements[i] = array[i + offset];
      }
      return this;
    }
    toArray(array = [], offset = 0) {
      const te = this.elements;
      array[offset] = te[0];
      array[offset + 1] = te[1];
      array[offset + 2] = te[2];
      array[offset + 3] = te[3];
      array[offset + 4] = te[4];
      array[offset + 5] = te[5];
      array[offset + 6] = te[6];
      array[offset + 7] = te[7];
      array[offset + 8] = te[8];
      return array;
    }
    clone() {
      return new this.constructor().fromArray(this.elements);
    }
  };
  var _m3 = /* @__PURE__ */ new Matrix3();
  function arrayNeedsUint32(array) {
    for (let i = array.length - 1; i >= 0; --i) {
      if (array[i] >= 65535) return true;
    }
    return false;
  }
  var TYPED_ARRAYS = {
    Int8Array,
    Uint8Array,
    Uint8ClampedArray,
    Int16Array,
    Uint16Array,
    Int32Array,
    Uint32Array,
    Float32Array,
    Float64Array
  };
  function getTypedArray(type, buffer) {
    return new TYPED_ARRAYS[type](buffer);
  }
  function createElementNS(name) {
    return document.createElementNS("http://www.w3.org/1999/xhtml", name);
  }
  function createCanvasElement() {
    const canvas = createElementNS("canvas");
    canvas.style.display = "block";
    return canvas;
  }
  var _cache = {};
  function warnOnce(message) {
    if (message in _cache) return;
    _cache[message] = true;
    console.warn(message);
  }
  var LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 = /* @__PURE__ */ new Matrix3().set(
    0.8224621,
    0.177538,
    0,
    0.0331941,
    0.9668058,
    0,
    0.0170827,
    0.0723974,
    0.9105199
  );
  var LINEAR_DISPLAY_P3_TO_LINEAR_SRGB = /* @__PURE__ */ new Matrix3().set(
    1.2249401,
    -0.2249404,
    0,
    -0.0420569,
    1.0420571,
    0,
    -0.0196376,
    -0.0786361,
    1.0982735
  );
  var COLOR_SPACES = {
    [LinearSRGBColorSpace]: {
      transfer: LinearTransfer,
      primaries: Rec709Primaries,
      toReference: (color) => color,
      fromReference: (color) => color
    },
    [SRGBColorSpace]: {
      transfer: SRGBTransfer,
      primaries: Rec709Primaries,
      toReference: (color) => color.convertSRGBToLinear(),
      fromReference: (color) => color.convertLinearToSRGB()
    },
    [LinearDisplayP3ColorSpace]: {
      transfer: LinearTransfer,
      primaries: P3Primaries,
      toReference: (color) => color.applyMatrix3(LINEAR_DISPLAY_P3_TO_LINEAR_SRGB),
      fromReference: (color) => color.applyMatrix3(LINEAR_SRGB_TO_LINEAR_DISPLAY_P3)
    },
    [DisplayP3ColorSpace]: {
      transfer: SRGBTransfer,
      primaries: P3Primaries,
      toReference: (color) => color.convertSRGBToLinear().applyMatrix3(LINEAR_DISPLAY_P3_TO_LINEAR_SRGB),
      fromReference: (color) => color.applyMatrix3(LINEAR_SRGB_TO_LINEAR_DISPLAY_P3).convertLinearToSRGB()
    }
  };
  var SUPPORTED_WORKING_COLOR_SPACES = /* @__PURE__ */ new Set([LinearSRGBColorSpace, LinearDisplayP3ColorSpace]);
  var ColorManagement = {
    enabled: true,
    _workingColorSpace: LinearSRGBColorSpace,
    get workingColorSpace() {
      return this._workingColorSpace;
    },
    set workingColorSpace(colorSpace) {
      if (!SUPPORTED_WORKING_COLOR_SPACES.has(colorSpace)) {
        throw new Error(`Unsupported working color space, "${colorSpace}".`);
      }
      this._workingColorSpace = colorSpace;
    },
    convert: function(color, sourceColorSpace, targetColorSpace) {
      if (this.enabled === false || sourceColorSpace === targetColorSpace || !sourceColorSpace || !targetColorSpace) {
        return color;
      }
      const sourceToReference = COLOR_SPACES[sourceColorSpace].toReference;
      const targetFromReference = COLOR_SPACES[targetColorSpace].fromReference;
      return targetFromReference(sourceToReference(color));
    },
    fromWorkingColorSpace: function(color, targetColorSpace) {
      return this.convert(color, this._workingColorSpace, targetColorSpace);
    },
    toWorkingColorSpace: function(color, sourceColorSpace) {
      return this.convert(color, sourceColorSpace, this._workingColorSpace);
    },
    getPrimaries: function(colorSpace) {
      return COLOR_SPACES[colorSpace].primaries;
    },
    getTransfer: function(colorSpace) {
      if (colorSpace === NoColorSpace) return LinearTransfer;
      return COLOR_SPACES[colorSpace].transfer;
    }
  };
  function SRGBToLinear(c) {
    return c < 0.04045 ? c * 0.0773993808 : Math.pow(c * 0.9478672986 + 0.0521327014, 2.4);
  }
  function LinearToSRGB(c) {
    return c < 31308e-7 ? c * 12.92 : 1.055 * Math.pow(c, 0.41666) - 0.055;
  }
  var _canvas;
  var ImageUtils = class {
    static getDataURL(image) {
      if (/^data:/i.test(image.src)) {
        return image.src;
      }
      if (typeof HTMLCanvasElement === "undefined") {
        return image.src;
      }
      let canvas;
      if (image instanceof HTMLCanvasElement) {
        canvas = image;
      } else {
        if (_canvas === void 0) _canvas = createElementNS("canvas");
        _canvas.width = image.width;
        _canvas.height = image.height;
        const context = _canvas.getContext("2d");
        if (image instanceof ImageData) {
          context.putImageData(image, 0, 0);
        } else {
          context.drawImage(image, 0, 0, image.width, image.height);
        }
        canvas = _canvas;
      }
      if (canvas.width > 2048 || canvas.height > 2048) {
        console.warn("THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons", image);
        return canvas.toDataURL("image/jpeg", 0.6);
      } else {
        return canvas.toDataURL("image/png");
      }
    }
    static sRGBToLinear(image) {
      if (typeof HTMLImageElement !== "undefined" && image instanceof HTMLImageElement || typeof HTMLCanvasElement !== "undefined" && image instanceof HTMLCanvasElement || typeof ImageBitmap !== "undefined" && image instanceof ImageBitmap) {
        const canvas = createElementNS("canvas");
        canvas.width = image.width;
        canvas.height = image.height;
        const context = canvas.getContext("2d");
        context.drawImage(image, 0, 0, image.width, image.height);
        const imageData = context.getImageData(0, 0, image.width, image.height);
        const data = imageData.data;
        for (let i = 0; i < data.length; i++) {
          data[i] = SRGBToLinear(data[i] / 255) * 255;
        }
        context.putImageData(imageData, 0, 0);
        return canvas;
      } else if (image.data) {
        const data = image.data.slice(0);
        for (let i = 0; i < data.length; i++) {
          if (data instanceof Uint8Array || data instanceof Uint8ClampedArray) {
            data[i] = Math.floor(SRGBToLinear(data[i] / 255) * 255);
          } else {
            data[i] = SRGBToLinear(data[i]);
          }
        }
        return {
          data,
          width: image.width,
          height: image.height
        };
      } else {
        console.warn("THREE.ImageUtils.sRGBToLinear(): Unsupported image type. No color space conversion applied.");
        return image;
      }
    }
  };
  var _sourceId = 0;
  var Source = class {
    constructor(data = null) {
      this.isSource = true;
      Object.defineProperty(this, "id", { value: _sourceId++ });
      this.uuid = generateUUID();
      this.data = data;
      this.version = 0;
    }
    set needsUpdate(value) {
      if (value === true) this.version++;
    }
    toJSON(meta) {
      const isRootObject = meta === void 0 || typeof meta === "string";
      if (!isRootObject && meta.images[this.uuid] !== void 0) {
        return meta.images[this.uuid];
      }
      const output = {
        uuid: this.uuid,
        url: ""
      };
      const data = this.data;
      if (data !== null) {
        let url;
        if (Array.isArray(data)) {
          url = [];
          for (let i = 0, l = data.length; i < l; i++) {
            if (data[i].isDataTexture) {
              url.push(serializeImage(data[i].image));
            } else {
              url.push(serializeImage(data[i]));
            }
          }
        } else {
          url = serializeImage(data);
        }
        output.url = url;
      }
      if (!isRootObject) {
        meta.images[this.uuid] = output;
      }
      return output;
    }
  };
  function serializeImage(image) {
    if (typeof HTMLImageElement !== "undefined" && image instanceof HTMLImageElement || typeof HTMLCanvasElement !== "undefined" && image instanceof HTMLCanvasElement || typeof ImageBitmap !== "undefined" && image instanceof ImageBitmap) {
      return ImageUtils.getDataURL(image);
    } else {
      if (image.data) {
        return {
          data: Array.from(image.data),
          width: image.width,
          height: image.height,
          type: image.data.constructor.name
        };
      } else {
        console.warn("THREE.Texture: Unable to serialize Texture.");
        return {};
      }
    }
  }
  var _textureId = 0;
  var Texture = class _Texture extends EventDispatcher {
    constructor(image = _Texture.DEFAULT_IMAGE, mapping = _Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = _Texture.DEFAULT_ANISOTROPY, colorSpace = NoColorSpace) {
      super();
      this.isTexture = true;
      Object.defineProperty(this, "id", { value: _textureId++ });
      this.uuid = generateUUID();
      this.name = "";
      this.source = new Source(image);
      this.mipmaps = [];
      this.mapping = mapping;
      this.channel = 0;
      this.wrapS = wrapS;
      this.wrapT = wrapT;
      this.magFilter = magFilter;
      this.minFilter = minFilter;
      this.anisotropy = anisotropy;
      this.format = format;
      this.internalFormat = null;
      this.type = type;
      this.offset = new Vector2(0, 0);
      this.repeat = new Vector2(1, 1);
      this.center = new Vector2(0, 0);
      this.rotation = 0;
      this.matrixAutoUpdate = true;
      this.matrix = new Matrix3();
      this.generateMipmaps = true;
      this.premultiplyAlpha = false;
      this.flipY = true;
      this.unpackAlignment = 4;
      if (typeof colorSpace === "string") {
        this.colorSpace = colorSpace;
      } else {
        warnOnce("THREE.Texture: Property .encoding has been replaced by .colorSpace.");
        this.colorSpace = colorSpace === sRGBEncoding ? SRGBColorSpace : NoColorSpace;
      }
      this.userData = {};
      this.version = 0;
      this.onUpdate = null;
      this.isRenderTargetTexture = false;
      this.needsPMREMUpdate = false;
    }
    get image() {
      return this.source.data;
    }
    set image(value = null) {
      this.source.data = value;
    }
    updateMatrix() {
      this.matrix.setUvTransform(this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y);
    }
    clone() {
      return new this.constructor().copy(this);
    }
    copy(source) {
      this.name = source.name;
      this.source = source.source;
      this.mipmaps = source.mipmaps.slice(0);
      this.mapping = source.mapping;
      this.channel = source.channel;
      this.wrapS = source.wrapS;
      this.wrapT = source.wrapT;
      this.magFilter = source.magFilter;
      this.minFilter = source.minFilter;
      this.anisotropy = source.anisotropy;
      this.format = source.format;
      this.internalFormat = source.internalFormat;
      this.type = source.type;
      this.offset.copy(source.offset);
      this.repeat.copy(source.repeat);
      this.center.copy(source.center);
      this.rotation = source.rotation;
      this.matrixAutoUpdate = source.matrixAutoUpdate;
      this.matrix.copy(source.matrix);
      this.generateMipmaps = source.generateMipmaps;
      this.premultiplyAlpha = source.premultiplyAlpha;
      this.flipY = source.flipY;
      this.unpackAlignment = source.unpackAlignment;
      this.colorSpace = source.colorSpace;
      this.userData = JSON.parse(JSON.stringify(source.userData));
      this.needsUpdate = true;
      return this;
    }
    toJSON(meta) {
      const isRootObject = meta === void 0 || typeof meta === "string";
      if (!isRootObject && meta.textures[this.uuid] !== void 0) {
        return meta.textures[this.uuid];
      }
      const output = {
        metadata: {
          version: 4.6,
          type: "Texture",
          generator: "Texture.toJSON"
        },
        uuid: this.uuid,
        name: this.name,
        image: this.source.toJSON(meta).uuid,
        mapping: this.mapping,
        channel: this.channel,
        repeat: [this.repeat.x, this.repeat.y],
        offset: [this.offset.x, this.offset.y],
        center: [this.center.x, this.center.y],
        rotation: this.rotation,
        wrap: [this.wrapS, this.wrapT],
        format: this.format,
        internalFormat: this.internalFormat,
        type: this.type,
        colorSpace: this.colorSpace,
        minFilter: this.minFilter,
        magFilter: this.magFilter,
        anisotropy: this.anisotropy,
        flipY: this.flipY,
        generateMipmaps: this.generateMipmaps,
        premultiplyAlpha: this.premultiplyAlpha,
        unpackAlignment: this.unpackAlignment
      };
      if (Object.keys(this.userData).length > 0) output.userData = this.userData;
      if (!isRootObject) {
        meta.textures[this.uuid] = output;
      }
      return output;
    }
    dispose() {
      this.dispatchEvent({ type: "dispose" });
    }
    transformUv(uv) {
      if (this.mapping !== UVMapping) return uv;
      uv.applyMatrix3(this.matrix);
      if (uv.x < 0 || uv.x > 1) {
        switch (this.wrapS) {
          case RepeatWrapping:
            uv.x = uv.x - Math.floor(uv.x);
            break;
          case ClampToEdgeWrapping:
            uv.x = uv.x < 0 ? 0 : 1;
            break;
          case MirroredRepeatWrapping:
            if (Math.abs(Math.floor(uv.x) % 2) === 1) {
              uv.x = Math.ceil(uv.x) - uv.x;
            } else {
              uv.x = uv.x - Math.floor(uv.x);
            }
            break;
        }
      }
      if (uv.y < 0 || uv.y > 1) {
        switch (this.wrapT) {
          case RepeatWrapping:
            uv.y = uv.y - Math.floor(uv.y);
            break;
          case ClampToEdgeWrapping:
            uv.y = uv.y < 0 ? 0 : 1;
            break;
          case MirroredRepeatWrapping:
            if (Math.abs(Math.floor(uv.y) % 2) === 1) {
              uv.y = Math.ceil(uv.y) - uv.y;
            } else {
              uv.y = uv.y - Math.floor(uv.y);
            }
            break;
        }
      }
      if (this.flipY) {
        uv.y = 1 - uv.y;
      }
      return uv;
    }
    set needsUpdate(value) {
      if (value === true) {
        this.version++;
        this.source.needsUpdate = true;
      }
    }
    get encoding() {
      warnOnce("THREE.Texture: Property .encoding has been replaced by .colorSpace.");
      return this.colorSpace === SRGBColorSpace ? sRGBEncoding : LinearEncoding;
    }
    set encoding(encoding) {
      warnOnce("THREE.Texture: Property .encoding has been replaced by .colorSpace.");
      this.colorSpace = encoding === sRGBEncoding ? SRGBColorSpace : NoColorSpace;
    }
  };
  Texture.DEFAULT_IMAGE = null;
  Texture.DEFAULT_MAPPING = UVMapping;
  Texture.DEFAULT_ANISOTROPY = 1;
  var Vector4 = class _Vector4 {
    constructor(x = 0, y = 0, z = 0, w = 1) {
      _Vector4.prototype.isVector4 = true;
      this.x = x;
      this.y = y;
      this.z = z;
      this.w = w;
    }
    get width() {
      return this.z;
    }
    set width(value) {
      this.z = value;
    }
    get height() {
      return this.w;
    }
    set height(value) {
      this.w = value;
    }
    set(x, y, z, w) {
      this.x = x;
      this.y = y;
      this.z = z;
      this.w = w;
      return this;
    }
    setScalar(scalar) {
      this.x = scalar;
      this.y = scalar;
      this.z = scalar;
      this.w = scalar;
      return this;
    }
    setX(x) {
      this.x = x;
      return this;
    }
    setY(y) {
      this.y = y;
      return this;
    }
    setZ(z) {
      this.z = z;
      return this;
    }
    setW(w) {
      this.w = w;
      return this;
    }
    setComponent(index, value) {
      switch (index) {
        case 0:
          this.x = value;
          break;
        case 1:
          this.y = value;
          break;
        case 2:
          this.z = value;
          break;
        case 3:
          this.w = value;
          break;
        default:
          throw new Error("index is out of range: " + index);
      }
      return this;
    }
    getComponent(index) {
      switch (index) {
        case 0:
          return this.x;
        case 1:
          return this.y;
        case 2:
          return this.z;
        case 3:
          return this.w;
        default:
          throw new Error("index is out of range: " + index);
      }
    }
    clone() {
      return new this.constructor(this.x, this.y, this.z, this.w);
    }
    copy(v) {
      this.x = v.x;
      this.y = v.y;
      this.z = v.z;
      this.w = v.w !== void 0 ? v.w : 1;
      return this;
    }
    add(v) {
      this.x += v.x;
      this.y += v.y;
      this.z += v.z;
      this.w += v.w;
      return this;
    }
    addScalar(s) {
      this.x += s;
      this.y += s;
      this.z += s;
      this.w += s;
      return this;
    }
    addVectors(a, b) {
      this.x = a.x + b.x;
      this.y = a.y + b.y;
      this.z = a.z + b.z;
      this.w = a.w + b.w;
      return this;
    }
    addScaledVector(v, s) {
      this.x += v.x * s;
      this.y += v.y * s;
      this.z += v.z * s;
      this.w += v.w * s;
      return this;
    }
    sub(v) {
      this.x -= v.x;
      this.y -= v.y;
      this.z -= v.z;
      this.w -= v.w;
      return this;
    }
    subScalar(s) {
      this.x -= s;
      this.y -= s;
      this.z -= s;
      this.w -= s;
      return this;
    }
    subVectors(a, b) {
      this.x = a.x - b.x;
      this.y = a.y - b.y;
      this.z = a.z - b.z;
      this.w = a.w - b.w;
      return this;
    }
    multiply(v) {
      this.x *= v.x;
      this.y *= v.y;
      this.z *= v.z;
      this.w *= v.w;
      return this;
    }
    multiplyScalar(scalar) {
      this.x *= scalar;
      this.y *= scalar;
      this.z *= scalar;
      this.w *= scalar;
      return this;
    }
    applyMatrix4(m) {
      const x = this.x, y = this.y, z = this.z, w = this.w;
      const e = m.elements;
      this.x = e[0] * x + e[4] * y + e[8] * z + e[12] * w;
      this.y = e[1] * x + e[5] * y + e[9] * z + e[13] * w;
      this.z = e[2] * x + e[6] * y + e[10] * z + e[14] * w;
      this.w = e[3] * x + e[7] * y + e[11] * z + e[15] * w;
      return this;
    }
    divideScalar(scalar) {
      return this.multiplyScalar(1 / scalar);
    }
    setAxisAngleFromQuaternion(q) {
      this.w = 2 * Math.acos(q.w);
      const s = Math.sqrt(1 - q.w * q.w);
      if (s < 1e-4) {
        this.x = 1;
        this.y = 0;
        this.z = 0;
      } else {
        this.x = q.x / s;
        this.y = q.y / s;
        this.z = q.z / s;
      }
      return this;
    }
    setAxisAngleFromRotationMatrix(m) {
      let angle, x, y, z;
      const epsilon = 0.01, epsilon2 = 0.1, te = m.elements, m11 = te[0], m12 = te[4], m13 = te[8], m21 = te[1], m22 = te[5], m23 = te[9], m31 = te[2], m32 = te[6], m33 = te[10];
      if (Math.abs(m12 - m21) < epsilon && Math.abs(m13 - m31) < epsilon && Math.abs(m23 - m32) < epsilon) {
        if (Math.abs(m12 + m21) < epsilon2 && Math.abs(m13 + m31) < epsilon2 && Math.abs(m23 + m32) < epsilon2 && Math.abs(m11 + m22 + m33 - 3) < epsilon2) {
          this.set(1, 0, 0, 0);
          return this;
        }
        angle = Math.PI;
        const xx = (m11 + 1) / 2;
        const yy = (m22 + 1) / 2;
        const zz = (m33 + 1) / 2;
        const xy = (m12 + m21) / 4;
        const xz = (m13 + m31) / 4;
        const yz = (m23 + m32) / 4;
        if (xx > yy && xx > zz) {
          if (xx < epsilon) {
            x = 0;
            y = 0.707106781;
            z = 0.707106781;
          } else {
            x = Math.sqrt(xx);
            y = xy / x;
            z = xz / x;
          }
        } else if (yy > zz) {
          if (yy < epsilon) {
            x = 0.707106781;
            y = 0;
            z = 0.707106781;
          } else {
            y = Math.sqrt(yy);
            x = xy / y;
            z = yz / y;
          }
        } else {
          if (zz < epsilon) {
            x = 0.707106781;
            y = 0.707106781;
            z = 0;
          } else {
            z = Math.sqrt(zz);
            x = xz / z;
            y = yz / z;
          }
        }
        this.set(x, y, z, angle);
        return this;
      }
      let s = Math.sqrt((m32 - m23) * (m32 - m23) + (m13 - m31) * (m13 - m31) + (m21 - m12) * (m21 - m12));
      if (Math.abs(s) < 1e-3) s = 1;
      this.x = (m32 - m23) / s;
      this.y = (m13 - m31) / s;
      this.z = (m21 - m12) / s;
      this.w = Math.acos((m11 + m22 + m33 - 1) / 2);
      return this;
    }
    min(v) {
      this.x = Math.min(this.x, v.x);
      this.y = Math.min(this.y, v.y);
      this.z = Math.min(this.z, v.z);
      this.w = Math.min(this.w, v.w);
      return this;
    }
    max(v) {
      this.x = Math.max(this.x, v.x);
      this.y = Math.max(this.y, v.y);
      this.z = Math.max(this.z, v.z);
      this.w = Math.max(this.w, v.w);
      return this;
    }
    clamp(min, max2) {
      this.x = Math.max(min.x, Math.min(max2.x, this.x));
      this.y = Math.max(min.y, Math.min(max2.y, this.y));
      this.z = Math.max(min.z, Math.min(max2.z, this.z));
      this.w = Math.max(min.w, Math.min(max2.w, this.w));
      return this;
    }
    clampScalar(minVal, maxVal) {
      this.x = Math.max(minVal, Math.min(maxVal, this.x));
      this.y = Math.max(minVal, Math.min(maxVal, this.y));
      this.z = Math.max(minVal, Math.min(maxVal, this.z));
      this.w = Math.max(minVal, Math.min(maxVal, this.w));
      return this;
    }
    clampLength(min, max2) {
      const length = this.length();
      return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max2, length)));
    }
    floor() {
      this.x = Math.floor(this.x);
      this.y = Math.floor(this.y);
      this.z = Math.floor(this.z);
      this.w = Math.floor(this.w);
      return this;
    }
    ceil() {
      this.x = Math.ceil(this.x);
      this.y = Math.ceil(this.y);
      this.z = Math.ceil(this.z);
      this.w = Math.ceil(this.w);
      return this;
    }
    round() {
      this.x = Math.round(this.x);
      this.y = Math.round(this.y);
      this.z = Math.round(this.z);
      this.w = Math.round(this.w);
      return this;
    }
    roundToZero() {
      this.x = Math.trunc(this.x);
      this.y = Math.trunc(this.y);
      this.z = Math.trunc(this.z);
      this.w = Math.trunc(this.w);
      return this;
    }
    negate() {
      this.x = -this.x;
      this.y = -this.y;
      this.z = -this.z;
      this.w = -this.w;
      return this;
    }
    dot(v) {
      return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
    }
    lengthSq() {
      return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
    }
    length() {
      return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w);
    }
    manhattanLength() {
      return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z) + Math.abs(this.w);
    }
    normalize() {
      return this.divideScalar(this.length() || 1);
    }
    setLength(length) {
      return this.normalize().multiplyScalar(length);
    }
    lerp(v, alpha) {
      this.x += (v.x - this.x) * alpha;
      this.y += (v.y - this.y) * alpha;
      this.z += (v.z - this.z) * alpha;
      this.w += (v.w - this.w) * alpha;
      return this;
    }
    lerpVectors(v1, v2, alpha) {
      this.x = v1.x + (v2.x - v1.x) * alpha;
      this.y = v1.y + (v2.y - v1.y) * alpha;
      this.z = v1.z + (v2.z - v1.z) * alpha;
      this.w = v1.w + (v2.w - v1.w) * alpha;
      return this;
    }
    equals(v) {
      return v.x === this.x && v.y === this.y && v.z === this.z && v.w === this.w;
    }
    fromArray(array, offset = 0) {
      this.x = array[offset];
      this.y = array[offset + 1];
      this.z = array[offset + 2];
      this.w = array[offset + 3];
      return this;
    }
    toArray(array = [], offset = 0) {
      array[offset] = this.x;
      array[offset + 1] = this.y;
      array[offset + 2] = this.z;
      array[offset + 3] = this.w;
      return array;
    }
    fromBufferAttribute(attribute, index) {
      this.x = attribute.getX(index);
      this.y = attribute.getY(index);
      this.z = attribute.getZ(index);
      this.w = attribute.getW(index);
      return this;
    }
    random() {
      this.x = Math.random();
      this.y = Math.random();
      this.z = Math.random();
      this.w = Math.random();
      return this;
    }
    *[Symbol.iterator]() {
      yield this.x;
      yield this.y;
      yield this.z;
      yield this.w;
    }
  };
  var RenderTarget = class extends EventDispatcher {
    constructor(width = 1, height = 1, options = {}) {
      super();
      this.isRenderTarget = true;
      this.width = width;
      this.height = height;
      this.depth = 1;
      this.scissor = new Vector4(0, 0, width, height);
      this.scissorTest = false;
      this.viewport = new Vector4(0, 0, width, height);
      const image = { width, height, depth: 1 };
      if (options.encoding !== void 0) {
        warnOnce("THREE.WebGLRenderTarget: option.encoding has been replaced by option.colorSpace.");
        options.colorSpace = options.encoding === sRGBEncoding ? SRGBColorSpace : NoColorSpace;
      }
      options = Object.assign({
        generateMipmaps: false,
        internalFormat: null,
        minFilter: LinearFilter,
        depthBuffer: true,
        stencilBuffer: false,
        depthTexture: null,
        samples: 0
      }, options);
      this.texture = new Texture(image, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.colorSpace);
      this.texture.isRenderTargetTexture = true;
      this.texture.flipY = false;
      this.texture.generateMipmaps = options.generateMipmaps;
      this.texture.internalFormat = options.internalFormat;
      this.depthBuffer = options.depthBuffer;
      this.stencilBuffer = options.stencilBuffer;
      this.depthTexture = options.depthTexture;
      this.samples = options.samples;
    }
    setSize(width, height, depth = 1) {
      if (this.width !== width || this.height !== height || this.depth !== depth) {
        this.width = width;
        this.height = height;
        this.depth = depth;
        this.texture.image.width = width;
        this.texture.image.height = height;
        this.texture.image.depth = depth;
        this.dispose();
      }
      this.viewport.set(0, 0, width, height);
      this.scissor.set(0, 0, width, height);
    }
    clone() {
      return new this.constructor().copy(this);
    }
    copy(source) {
      this.width = source.width;
      this.height = source.height;
      this.depth = source.depth;
      this.scissor.copy(source.scissor);
      this.scissorTest = source.scissorTest;
      this.viewport.copy(source.viewport);
      this.texture = source.texture.clone();
      this.texture.isRenderTargetTexture = true;
      const image = Object.assign({}, source.texture.image);
      this.texture.source = new Source(image);
      this.depthBuffer = source.depthBuffer;
      this.stencilBuffer = source.stencilBuffer;
      if (source.depthTexture !== null) this.depthTexture = source.depthTexture.clone();
      this.samples = source.samples;
      return this;
    }
    dispose() {
      this.dispatchEvent({ type: "dispose" });
    }
  };
  var WebGLRenderTarget = class extends RenderTarget {
    constructor(width = 1, height = 1, options = {}) {
      super(width, height, options);
      this.isWebGLRenderTarget = true;
    }
  };
  var DataArrayTexture = class extends Texture {
    constructor(data = null, width = 1, height = 1, depth = 1) {
      super(null);
      this.isDataArrayTexture = true;
      this.image = { data, width, height, depth };
      this.magFilter = NearestFilter;
      this.minFilter = NearestFilter;
      this.wrapR = ClampToEdgeWrapping;
      this.generateMipmaps = false;
      this.flipY = false;
      this.unpackAlignment = 1;
    }
  };
  var WebGLArrayRenderTarget = class extends WebGLRenderTarget {
    constructor(width = 1, height = 1, depth = 1, options = {}) {
      super(width, height, options);
      this.isWebGLArrayRenderTarget = true;
      this.depth = depth;
      this.texture = new DataArrayTexture(null, width, height, depth);
      this.texture.isRenderTargetTexture = true;
    }
  };
  var Data3DTexture = class extends Texture {
    constructor(data = null, width = 1, height = 1, depth = 1) {
      super(null);
      this.isData3DTexture = true;
      this.image = { data, width, height, depth };
      this.magFilter = NearestFilter;
      this.minFilter = NearestFilter;
      this.wrapR = ClampToEdgeWrapping;
      this.generateMipmaps = false;
      this.flipY = false;
      this.unpackAlignment = 1;
    }
  };
  var WebGL3DRenderTarget = class extends WebGLRenderTarget {
    constructor(width = 1, height = 1, depth = 1, options = {}) {
      super(width, height, options);
      this.isWebGL3DRenderTarget = true;
      this.depth = depth;
      this.texture = new Data3DTexture(null, width, height, depth);
      this.texture.isRenderTargetTexture = true;
    }
  };
  var WebGLMultipleRenderTargets = class extends WebGLRenderTarget {
    constructor(width = 1, height = 1, count = 1, options = {}) {
      super(width, height, options);
      this.isWebGLMultipleRenderTargets = true;
      const texture = this.texture;
      this.texture = [];
      for (let i = 0; i < count; i++) {
        this.texture[i] = texture.clone();
        this.texture[i].isRenderTargetTexture = true;
      }
    }
    setSize(width, height, depth = 1) {
      if (this.width !== width || this.height !== height || this.depth !== depth) {
        this.width = width;
        this.height = height;
        this.depth = depth;
        for (let i = 0, il = this.texture.length; i < il; i++) {
          this.texture[i].image.width = width;
          this.texture[i].image.height = height;
          this.texture[i].image.depth = depth;
        }
        this.dispose();
      }
      this.viewport.set(0, 0, width, height);
      this.scissor.set(0, 0, width, height);
    }
    copy(source) {
      this.dispose();
      this.width = source.width;
      this.height = source.height;
      this.depth = source.depth;
      this.scissor.copy(source.scissor);
      this.scissorTest = source.scissorTest;
      this.viewport.copy(source.viewport);
      this.depthBuffer = source.depthBuffer;
      this.stencilBuffer = source.stencilBuffer;
      if (source.depthTexture !== null) this.depthTexture = source.depthTexture.clone();
      this.texture.length = 0;
      for (let i = 0, il = source.texture.length; i < il; i++) {
        this.texture[i] = source.texture[i].clone();
        this.texture[i].isRenderTargetTexture = true;
      }
      return this;
    }
  };
  var Quaternion = class {
    constructor(x = 0, y = 0, z = 0, w = 1) {
      this.isQuaternion = true;
      this._x = x;
      this._y = y;
      this._z = z;
      this._w = w;
    }
    static slerpFlat(dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t) {
      let x0 = src0[srcOffset0 + 0], y0 = src0[srcOffset0 + 1], z0 = src0[srcOffset0 + 2], w0 = src0[srcOffset0 + 3];
      const x1 = src1[srcOffset1 + 0], y1 = src1[srcOffset1 + 1], z1 = src1[srcOffset1 + 2], w1 = src1[srcOffset1 + 3];
      if (t === 0) {
        dst[dstOffset + 0] = x0;
        dst[dstOffset + 1] = y0;
        dst[dstOffset + 2] = z0;
        dst[dstOffset + 3] = w0;
        return;
      }
      if (t === 1) {
        dst[dstOffset + 0] = x1;
        dst[dstOffset + 1] = y1;
        dst[dstOffset + 2] = z1;
        dst[dstOffset + 3] = w1;
        return;
      }
      if (w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1) {
        let s = 1 - t;
        const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1, dir = cos >= 0 ? 1 : -1, sqrSin = 1 - cos * cos;
        if (sqrSin > Number.EPSILON) {
          const sin = Math.sqrt(sqrSin), len = Math.atan2(sin, cos * dir);
          s = Math.sin(s * len) / sin;
          t = Math.sin(t * len) / sin;
        }
        const tDir = t * dir;
        x0 = x0 * s + x1 * tDir;
        y0 = y0 * s + y1 * tDir;
        z0 = z0 * s + z1 * tDir;
        w0 = w0 * s + w1 * tDir;
        if (s === 1 - t) {
          const f = 1 / Math.sqrt(x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0);
          x0 *= f;
          y0 *= f;
          z0 *= f;
          w0 *= f;
        }
      }
      dst[dstOffset] = x0;
      dst[dstOffset + 1] = y0;
      dst[dstOffset + 2] = z0;
      dst[dstOffset + 3] = w0;
    }
    static multiplyQuaternionsFlat(dst, dstOffset, src0, srcOffset0, src1, srcOffset1) {
      const x0 = src0[srcOffset0];
      const y0 = src0[srcOffset0 + 1];
      const z0 = src0[srcOffset0 + 2];
      const w0 = src0[srcOffset0 + 3];
      const x1 = src1[srcOffset1];
      const y1 = src1[srcOffset1 + 1];
      const z1 = src1[srcOffset1 + 2];
      const w1 = src1[srcOffset1 + 3];
      dst[dstOffset] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
      dst[dstOffset + 1] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
      dst[dstOffset + 2] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
      dst[dstOffset + 3] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;
      return dst;
    }
    get x() {
      return this._x;
    }
    set x(value) {
      this._x = value;
      this._onChangeCallback();
    }
    get y() {
      return this._y;
    }
    set y(value) {
      this._y = value;
      this._onChangeCallback();
    }
    get z() {
      return this._z;
    }
    set z(value) {
      this._z = value;
      this._onChangeCallback();
    }
    get w() {
      return this._w;
    }
    set w(value) {
      this._w = value;
      this._onChangeCallback();
    }
    set(x, y, z, w) {
      this._x = x;
      this._y = y;
      this._z = z;
      this._w = w;
      this._onChangeCallback();
      return this;
    }
    clone() {
      return new this.constructor(this._x, this._y, this._z, this._w);
    }
    copy(quaternion) {
      this._x = quaternion.x;
      this._y = quaternion.y;
      this._z = quaternion.z;
      this._w = quaternion.w;
      this._onChangeCallback();
      return this;
    }
    setFromEuler(euler, update = true) {
      const x = euler._x, y = euler._y, z = euler._z, order = euler._order;
      const cos = Math.cos;
      const sin = Math.sin;
      const c1 = cos(x / 2);
      const c2 = cos(y / 2);
      const c3 = cos(z / 2);
      const s1 = sin(x / 2);
      const s2 = sin(y / 2);
      const s3 = sin(z / 2);
      switch (order) {
        case "XYZ":
          this._x = s1 * c2 * c3 + c1 * s2 * s3;
          this._y = c1 * s2 * c3 - s1 * c2 * s3;
          this._z = c1 * c2 * s3 + s1 * s2 * c3;
          this._w = c1 * c2 * c3 - s1 * s2 * s3;
          break;
        case "YXZ":
          this._x = s1 * c2 * c3 + c1 * s2 * s3;
          this._y = c1 * s2 * c3 - s1 * c2 * s3;
          this._z = c1 * c2 * s3 - s1 * s2 * c3;
          this._w = c1 * c2 * c3 + s1 * s2 * s3;
          break;
        case "ZXY":
          this._x = s1 * c2 * c3 - c1 * s2 * s3;
          this._y = c1 * s2 * c3 + s1 * c2 * s3;
          this._z = c1 * c2 * s3 + s1 * s2 * c3;
          this._w = c1 * c2 * c3 - s1 * s2 * s3;
          break;
        case "ZYX":
          this._x = s1 * c2 * c3 - c1 * s2 * s3;
          this._y = c1 * s2 * c3 + s1 * c2 * s3;
          this._z = c1 * c2 * s3 - s1 * s2 * c3;
          this._w = c1 * c2 * c3 + s1 * s2 * s3;
          break;
        case "YZX":
          this._x = s1 * c2 * c3 + c1 * s2 * s3;
          this._y = c1 * s2 * c3 + s1 * c2 * s3;
          this._z = c1 * c2 * s3 - s1 * s2 * c3;
          this._w = c1 * c2 * c3 - s1 * s2 * s3;
          break;
        case "XZY":
          this._x = s1 * c2 * c3 - c1 * s2 * s3;
          this._y = c1 * s2 * c3 - s1 * c2 * s3;
          this._z = c1 * c2 * s3 + s1 * s2 * c3;
          this._w = c1 * c2 * c3 + s1 * s2 * s3;
          break;
        default:
          console.warn("THREE.Quaternion: .setFromEuler() encountered an unknown order: " + order);
      }
      if (update === true) this._onChangeCallback();
      return this;
    }
    setFromAxisAngle(axis, angle) {
      const halfAngle = angle / 2, s = Math.sin(halfAngle);
      this._x = axis.x * s;
      this._y = axis.y * s;
      this._z = axis.z * s;
      this._w = Math.cos(halfAngle);
      this._onChangeCallback();
      return this;
    }
    setFromRotationMatrix(m) {
      const te = m.elements, m11 = te[0], m12 = te[4], m13 = te[8], m21 = te[1], m22 = te[5], m23 = te[9], m31 = te[2], m32 = te[6], m33 = te[10], trace = m11 + m22 + m33;
      if (trace > 0) {
        const s = 0.5 / Math.sqrt(trace + 1);
        this._w = 0.25 / s;
        this._x = (m32 - m23) * s;
        this._y = (m13 - m31) * s;
        this._z = (m21 - m12) * s;
      } else if (m11 > m22 && m11 > m33) {
        const s = 2 * Math.sqrt(1 + m11 - m22 - m33);
        this._w = (m32 - m23) / s;
        this._x = 0.25 * s;
        this._y = (m12 + m21) / s;
        this._z = (m13 + m31) / s;
      } else if (m22 > m33) {
        const s = 2 * Math.sqrt(1 + m22 - m11 - m33);
        this._w = (m13 - m31) / s;
        this._x = (m12 + m21) / s;
        this._y = 0.25 * s;
        this._z = (m23 + m32) / s;
      } else {
        const s = 2 * Math.sqrt(1 + m33 - m11 - m22);
        this._w = (m21 - m12) / s;
        this._x = (m13 + m31) / s;
        this._y = (m23 + m32) / s;
        this._z = 0.25 * s;
      }
      this._onChangeCallback();
      return this;
    }
    setFromUnitVectors(vFrom, vTo) {
      let r = vFrom.dot(vTo) + 1;
      if (r < Number.EPSILON) {
        r = 0;
        if (Math.abs(vFrom.x) > Math.abs(vFrom.z)) {
          this._x = -vFrom.y;
          this._y = vFrom.x;
          this._z = 0;
          this._w = r;
        } else {
          this._x = 0;
          this._y = -vFrom.z;
          this._z = vFrom.y;
          this._w = r;
        }
      } else {
        this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
        this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
        this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
        this._w = r;
      }
      return this.normalize();
    }
    angleTo(q) {
      return 2 * Math.acos(Math.abs(clamp(this.dot(q), -1, 1)));
    }
    rotateTowards(q, step) {
      const angle = this.angleTo(q);
      if (angle === 0) return this;
      const t = Math.min(1, step / angle);
      this.slerp(q, t);
      return this;
    }
    identity() {
      return this.set(0, 0, 0, 1);
    }
    invert() {
      return this.conjugate();
    }
    conjugate() {
      this._x *= -1;
      this._y *= -1;
      this._z *= -1;
      this._onChangeCallback();
      return this;
    }
    dot(v) {
      return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
    }
    lengthSq() {
      return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
    }
    length() {
      return Math.sqrt(this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w);
    }
    normalize() {
      let l = this.length();
      if (l === 0) {
        this._x = 0;
        this._y = 0;
        this._z = 0;
        this._w = 1;
      } else {
        l = 1 / l;
        this._x = this._x * l;
        this._y = this._y * l;
        this._z = this._z * l;
        this._w = this._w * l;
      }
      this._onChangeCallback();
      return this;
    }
    multiply(q) {
      return this.multiplyQuaternions(this, q);
    }
    premultiply(q) {
      return this.multiplyQuaternions(q, this);
    }
    multiplyQuaternions(a, b) {
      const qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
      const qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;
      this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
      this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
      this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
      this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;
      this._onChangeCallback();
      return this;
    }
    slerp(qb, t) {
      if (t === 0) return this;
      if (t === 1) return this.copy(qb);
      const x = this._x, y = this._y, z = this._z, w = this._w;
      let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;
      if (cosHalfTheta < 0) {
        this._w = -qb._w;
        this._x = -qb._x;
        this._y = -qb._y;
        this._z = -qb._z;
        cosHalfTheta = -cosHalfTheta;
      } else {
        this.copy(qb);
      }
      if (cosHalfTheta >= 1) {
        this._w = w;
        this._x = x;
        this._y = y;
        this._z = z;
        return this;
      }
      const sqrSinHalfTheta = 1 - cosHalfTheta * cosHalfTheta;
      if (sqrSinHalfTheta <= Number.EPSILON) {
        const s = 1 - t;
        this._w = s * w + t * this._w;
        this._x = s * x + t * this._x;
        this._y = s * y + t * this._y;
        this._z = s * z + t * this._z;
        this.normalize();
        return this;
      }
      const sinHalfTheta = Math.sqrt(sqrSinHalfTheta);
      const halfTheta = Math.atan2(sinHalfTheta, cosHalfTheta);
      const ratioA = Math.sin((1 - t) * halfTheta) / sinHalfTheta, ratioB = Math.sin(t * halfTheta) / sinHalfTheta;
      this._w = w * ratioA + this._w * ratioB;
      this._x = x * ratioA + this._x * ratioB;
      this._y = y * ratioA + this._y * ratioB;
      this._z = z * ratioA + this._z * ratioB;
      this._onChangeCallback();
      return this;
    }
    slerpQuaternions(qa, qb, t) {
      return this.copy(qa).slerp(qb, t);
    }
    random() {
      const u1 = Math.random();
      const sqrt1u1 = Math.sqrt(1 - u1);
      const sqrtu1 = Math.sqrt(u1);
      const u2 = 2 * Math.PI * Math.random();
      const u3 = 2 * Math.PI * Math.random();
      return this.set(
        sqrt1u1 * Math.cos(u2),
        sqrtu1 * Math.sin(u3),
        sqrtu1 * Math.cos(u3),
        sqrt1u1 * Math.sin(u2)
      );
    }
    equals(quaternion) {
      return quaternion._x === this._x && quaternion._y === this._y && quaternion._z === this._z && quaternion._w === this._w;
    }
    fromArray(array, offset = 0) {
      this._x = array[offset];
      this._y = array[offset + 1];
      this._z = array[offset + 2];
      this._w = array[offset + 3];
      this._onChangeCallback();
      return this;
    }
    toArray(array = [], offset = 0) {
      array[offset] = this._x;
      array[offset + 1] = this._y;
      array[offset + 2] = this._z;
      array[offset + 3] = this._w;
      return array;
    }
    fromBufferAttribute(attribute, index) {
      this._x = attribute.getX(index);
      this._y = attribute.getY(index);
      this._z = attribute.getZ(index);
      this._w = attribute.getW(index);
      this._onChangeCallback();
      return this;
    }
    toJSON() {
      return this.toArray();
    }
    _onChange(callback) {
      this._onChangeCallback = callback;
      return this;
    }
    _onChangeCallback() {
    }
    *[Symbol.iterator]() {
      yield this._x;
      yield this._y;
      yield this._z;
      yield this._w;
    }
  };
  var Vector3 = class _Vector3 {
    constructor(x = 0, y = 0, z = 0) {
      _Vector3.prototype.isVector3 = true;
      this.x = x;
      this.y = y;
      this.z = z;
    }
    set(x, y, z) {
      if (z === void 0) z = this.z;
      this.x = x;
      this.y = y;
      this.z = z;
      return this;
    }
    setScalar(scalar) {
      this.x = scalar;
      this.y = scalar;
      this.z = scalar;
      return this;
    }
    setX(x) {
      this.x = x;
      return this;
    }
    setY(y) {
      this.y = y;
      return this;
    }
    setZ(z) {
      this.z = z;
      return this;
    }
    setComponent(index, value) {
      switch (index) {
        case 0:
          this.x = value;
          break;
        case 1:
          this.y = value;
          break;
        case 2:
          this.z = value;
          break;
        default:
          throw new Error("index is out of range: " + index);
      }
      return this;
    }
    getComponent(index) {
      switch (index) {
        case 0:
          return this.x;
        case 1:
          return this.y;
        case 2:
          return this.z;
        default:
          throw new Error("index is out of range: " + index);
      }
    }
    clone() {
      return new this.constructor(this.x, this.y, this.z);
    }
    copy(v) {
      this.x = v.x;
      this.y = v.y;
      this.z = v.z;
      return this;
    }
    add(v) {
      this.x += v.x;
      this.y += v.y;
      this.z += v.z;
      return this;
    }
    addScalar(s) {
      this.x += s;
      this.y += s;
      this.z += s;
      return this;
    }
    addVectors(a, b) {
      this.x = a.x + b.x;
      this.y = a.y + b.y;
      this.z = a.z + b.z;
      return this;
    }
    addScaledVector(v, s) {
      this.x += v.x * s;
      this.y += v.y * s;
      this.z += v.z * s;
      return this;
    }
    sub(v) {
      this.x -= v.x;
      this.y -= v.y;
      this.z -= v.z;
      return this;
    }
    subScalar(s) {
      this.x -= s;
      this.y -= s;
      this.z -= s;
      return this;
    }
    subVectors(a, b) {
      this.x = a.x - b.x;
      this.y = a.y - b.y;
      this.z = a.z - b.z;
      return this;
    }
    multiply(v) {
      this.x *= v.x;
      this.y *= v.y;
      this.z *= v.z;
      return this;
    }
    multiplyScalar(scalar) {
      this.x *= scalar;
      this.y *= scalar;
      this.z *= scalar;
      return this;
    }
    multiplyVectors(a, b) {
      this.x = a.x * b.x;
      this.y = a.y * b.y;
      this.z = a.z * b.z;
      return this;
    }
    applyEuler(euler) {
      return this.applyQuaternion(_quaternion$4.setFromEuler(euler));
    }
    applyAxisAngle(axis, angle) {
      return this.applyQuaternion(_quaternion$4.setFromAxisAngle(axis, angle));
    }
    applyMatrix3(m) {
      const x = this.x, y = this.y, z = this.z;
      const e = m.elements;
      this.x = e[0] * x + e[3] * y + e[6] * z;
      this.y = e[1] * x + e[4] * y + e[7] * z;
      this.z = e[2] * x + e[5] * y + e[8] * z;
      return this;
    }
    applyNormalMatrix(m) {
      return this.applyMatrix3(m).normalize();
    }
    applyMatrix4(m) {
      const x = this.x, y = this.y, z = this.z;
      const e = m.elements;
      const w = 1 / (e[3] * x + e[7] * y + e[11] * z + e[15]);
      this.x = (e[0] * x + e[4] * y + e[8] * z + e[12]) * w;
      this.y = (e[1] * x + e[5] * y + e[9] * z + e[13]) * w;
      this.z = (e[2] * x + e[6] * y + e[10] * z + e[14]) * w;
      return this;
    }
    applyQuaternion(q) {
      const vx = this.x, vy = this.y, vz = this.z;
      const qx = q.x, qy = q.y, qz = q.z, qw = q.w;
      const tx = 2 * (qy * vz - qz * vy);
      const ty = 2 * (qz * vx - qx * vz);
      const tz = 2 * (qx * vy - qy * vx);
      this.x = vx + qw * tx + qy * tz - qz * ty;
      this.y = vy + qw * ty + qz * tx - qx * tz;
      this.z = vz + qw * tz + qx * ty - qy * tx;
      return this;
    }
    project(camera) {
      return this.applyMatrix4(camera.matrixWorldInverse).applyMatrix4(camera.projectionMatrix);
    }
    unproject(camera) {
      return this.applyMatrix4(camera.projectionMatrixInverse).applyMatrix4(camera.matrixWorld);
    }
    transformDirection(m) {
      const x = this.x, y = this.y, z = this.z;
      const e = m.elements;
      this.x = e[0] * x + e[4] * y + e[8] * z;
      this.y = e[1] * x + e[5] * y + e[9] * z;
      this.z = e[2] * x + e[6] * y + e[10] * z;
      return this.normalize();
    }
    divide(v) {
      this.x /= v.x;
      this.y /= v.y;
      this.z /= v.z;
      return this;
    }
    divideScalar(scalar) {
      return this.multiplyScalar(1 / scalar);
    }
    min(v) {
      this.x = Math.min(this.x, v.x);
      this.y = Math.min(this.y, v.y);
      this.z = Math.min(this.z, v.z);
      return this;
    }
    max(v) {
      this.x = Math.max(this.x, v.x);
      this.y = Math.max(this.y, v.y);
      this.z = Math.max(this.z, v.z);
      return this;
    }
    clamp(min, max2) {
      this.x = Math.max(min.x, Math.min(max2.x, this.x));
      this.y = Math.max(min.y, Math.min(max2.y, this.y));
      this.z = Math.max(min.z, Math.min(max2.z, this.z));
      return this;
    }
    clampScalar(minVal, maxVal) {
      this.x = Math.max(minVal, Math.min(maxVal, this.x));
      this.y = Math.max(minVal, Math.min(maxVal, this.y));
      this.z = Math.max(minVal, Math.min(maxVal, this.z));
      return this;
    }
    clampLength(min, max2) {
      const length = this.length();
      return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max2, length)));
    }
    floor() {
      this.x = Math.floor(this.x);
      this.y = Math.floor(this.y);
      this.z = Math.floor(this.z);
      return this;
    }
    ceil() {
      this.x = Math.ceil(this.x);
      this.y = Math.ceil(this.y);
      this.z = Math.ceil(this.z);
      return this;
    }
    round() {
      this.x = Math.round(this.x);
      this.y = Math.round(this.y);
      this.z = Math.round(this.z);
      return this;
    }
    roundToZero() {
      this.x = Math.trunc(this.x);
      this.y = Math.trunc(this.y);
      this.z = Math.trunc(this.z);
      return this;
    }
    negate() {
      this.x = -this.x;
      this.y = -this.y;
      this.z = -this.z;
      return this;
    }
    dot(v) {
      return this.x * v.x + this.y * v.y + this.z * v.z;
    }
    // TODO lengthSquared?
    lengthSq() {
      return this.x * this.x + this.y * this.y + this.z * this.z;
    }
    length() {
      return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
    }
    manhattanLength() {
      return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z);
    }
    normalize() {
      return this.divideScalar(this.length() || 1);
    }
    setLength(length) {
      return this.normalize().multiplyScalar(length);
    }
    lerp(v, alpha) {
      this.x += (v.x - this.x) * alpha;
      this.y += (v.y - this.y) * alpha;
      this.z += (v.z - this.z) * alpha;
      return this;
    }
    lerpVectors(v1, v2, alpha) {
      this.x = v1.x + (v2.x - v1.x) * alpha;
      this.y = v1.y + (v2.y - v1.y) * alpha;
      this.z = v1.z + (v2.z - v1.z) * alpha;
      return this;
    }
    cross(v) {
      return this.crossVectors(this, v);
    }
    crossVectors(a, b) {
      const ax = a.x, ay = a.y, az = a.z;
      const bx = b.x, by = b.y, bz = b.z;
      this.x = ay * bz - az * by;
      this.y = az * bx - ax * bz;
      this.z = ax * by - ay * bx;
      return this;
    }
    projectOnVector(v) {
      const denominator = v.lengthSq();
      if (denominator === 0) return this.set(0, 0, 0);
      const scalar = v.dot(this) / denominator;
      return this.copy(v).multiplyScalar(scalar);
    }
    projectOnPlane(planeNormal) {
      _vector$c.copy(this).projectOnVector(planeNormal);
      return this.sub(_vector$c);
    }
    reflect(normal) {
      return this.sub(_vector$c.copy(normal).multiplyScalar(2 * this.dot(normal)));
    }
    angleTo(v) {
      const denominator = Math.sqrt(this.lengthSq() * v.lengthSq());
      if (denominator === 0) return Math.PI / 2;
      const theta = this.dot(v) / denominator;
      return Math.acos(clamp(theta, -1, 1));
    }
    distanceTo(v) {
      return Math.sqrt(this.distanceToSquared(v));
    }
    distanceToSquared(v) {
      const dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;
      return dx * dx + dy * dy + dz * dz;
    }
    manhattanDistanceTo(v) {
      return Math.abs(this.x - v.x) + Math.abs(this.y - v.y) + Math.abs(this.z - v.z);
    }
    setFromSpherical(s) {
      return this.setFromSphericalCoords(s.radius, s.phi, s.theta);
    }
    setFromSphericalCoords(radius, phi, theta) {
      const sinPhiRadius = Math.sin(phi) * radius;
      this.x = sinPhiRadius * Math.sin(theta);
      this.y = Math.cos(phi) * radius;
      this.z = sinPhiRadius * Math.cos(theta);
      return this;
    }
    setFromCylindrical(c) {
      return this.setFromCylindricalCoords(c.radius, c.theta, c.y);
    }
    setFromCylindricalCoords(radius, theta, y) {
      this.x = radius * Math.sin(theta);
      this.y = y;
      this.z = radius * Math.cos(theta);
      return this;
    }
    setFromMatrixPosition(m) {
      const e = m.elements;
      this.x = e[12];
      this.y = e[13];
      this.z = e[14];
      return this;
    }
    setFromMatrixScale(m) {
      const sx = this.setFromMatrixColumn(m, 0).length();
      const sy = this.setFromMatrixColumn(m, 1).length();
      const sz = this.setFromMatrixColumn(m, 2).length();
      this.x = sx;
      this.y = sy;
      this.z = sz;
      return this;
    }
    setFromMatrixColumn(m, index) {
      return this.fromArray(m.elements, index * 4);
    }
    setFromMatrix3Column(m, index) {
      return this.fromArray(m.elements, index * 3);
    }
    setFromEuler(e) {
      this.x = e._x;
      this.y = e._y;
      this.z = e._z;
      return this;
    }
    setFromColor(c) {
      this.x = c.r;
      this.y = c.g;
      this.z = c.b;
      return this;
    }
    equals(v) {
      return v.x === this.x && v.y === this.y && v.z === this.z;
    }
    fromArray(array, offset = 0) {
      this.x = array[offset];
      this.y = array[offset + 1];
      this.z = array[offset + 2];
      return this;
    }
    toArray(array = [], offset = 0) {
      array[offset] = this.x;
      array[offset + 1] = this.y;
      array[offset + 2] = this.z;
      return array;
    }
    fromBufferAttribute(attribute, index) {
      this.x = attribute.getX(index);
      this.y = attribute.getY(index);
      this.z = attribute.getZ(index);
      return this;
    }
    random() {
      this.x = Math.random();
      this.y = Math.random();
      this.z = Math.random();
      return this;
    }
    randomDirection() {
      const u = (Math.random() - 0.5) * 2;
      const t = Math.random() * Math.PI * 2;
      const f = Math.sqrt(1 - u ** 2);
      this.x = f * Math.cos(t);
      this.y = f * Math.sin(t);
      this.z = u;
      return this;
    }
    *[Symbol.iterator]() {
      yield this.x;
      yield this.y;
      yield this.z;
    }
  };
  var _vector$c = /* @__PURE__ */ new Vector3();
  var _quaternion$4 = /* @__PURE__ */ new Quaternion();
  var Box3 = class {
    constructor(min = new Vector3(Infinity, Infinity, Infinity), max2 = new Vector3(-Infinity, -Infinity, -Infinity)) {
      this.isBox3 = true;
      this.min = min;
      this.max = max2;
    }
    set(min, max2) {
      this.min.copy(min);
      this.max.copy(max2);
      return this;
    }
    setFromArray(array) {
      this.makeEmpty();
      for (let i = 0, il = array.length; i < il; i += 3) {
        this.expandByPoint(_vector$b.fromArray(array, i));
      }
      return this;
    }
    setFromBufferAttribute(attribute) {
      this.makeEmpty();
      for (let i = 0, il = attribute.count; i < il; i++) {
        this.expandByPoint(_vector$b.fromBufferAttribute(attribute, i));
      }
      return this;
    }
    setFromPoints(points) {
      this.makeEmpty();
      for (let i = 0, il = points.length; i < il; i++) {
        this.expandByPoint(points[i]);
      }
      return this;
    }
    setFromCenterAndSize(center, size) {
      const halfSize = _vector$b.copy(size).multiplyScalar(0.5);
      this.min.copy(center).sub(halfSize);
      this.max.copy(center).add(halfSize);
      return this;
    }
    setFromObject(object, precise = false) {
      this.makeEmpty();
      return this.expandByObject(object, precise);
    }
    clone() {
      return new this.constructor().copy(this);
    }
    copy(box) {
      this.min.copy(box.min);
      this.max.copy(box.max);
      return this;
    }
    makeEmpty() {
      this.min.x = this.min.y = this.min.z = Infinity;
      this.max.x = this.max.y = this.max.z = -Infinity;
      return this;
    }
    isEmpty() {
      return this.max.x < this.min.x || this.max.y < this.min.y || this.max.z < this.min.z;
    }
    getCenter(target) {
      return this.isEmpty() ? target.set(0, 0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
    }
    getSize(target) {
      return this.isEmpty() ? target.set(0, 0, 0) : target.subVectors(this.max, this.min);
    }
    expandByPoint(point) {
      this.min.min(point);
      this.max.max(point);
      return this;
    }
    expandByVector(vector) {
      this.min.sub(vector);
      this.max.add(vector);
      return this;
    }
    expandByScalar(scalar) {
      this.min.addScalar(-scalar);
      this.max.addScalar(scalar);
      return this;
    }
    expandByObject(object, precise = false) {
      object.updateWorldMatrix(false, false);
      const geometry = object.geometry;
      if (geometry !== void 0) {
        const positionAttribute = geometry.getAttribute("position");
        if (precise === true && positionAttribute !== void 0 && object.isInstancedMesh !== true) {
          for (let i = 0, l = positionAttribute.count; i < l; i++) {
            if (object.isMesh === true) {
              object.getVertexPosition(i, _vector$b);
            } else {
              _vector$b.fromBufferAttribute(positionAttribute, i);
            }
            _vector$b.applyMatrix4(object.matrixWorld);
            this.expandByPoint(_vector$b);
          }
        } else {
          if (object.boundingBox !== void 0) {
            if (object.boundingBox === null) {
              object.computeBoundingBox();
            }
            _box$4.copy(object.boundingBox);
          } else {
            if (geometry.boundingBox === null) {
              geometry.computeBoundingBox();
            }
            _box$4.copy(geometry.boundingBox);
          }
          _box$4.applyMatrix4(object.matrixWorld);
          this.union(_box$4);
        }
      }
      const children = object.children;
      for (let i = 0, l = children.length; i < l; i++) {
        this.expandByObject(children[i], precise);
      }
      return this;
    }
    containsPoint(point) {
      return point.x < this.min.x || point.x > this.max.x || point.y < this.min.y || point.y > this.max.y || point.z < this.min.z || point.z > this.max.z ? false : true;
    }
    containsBox(box) {
      return this.min.x <= box.min.x && box.max.x <= this.max.x && this.min.y <= box.min.y && box.max.y <= this.max.y && this.min.z <= box.min.z && box.max.z <= this.max.z;
    }
    getParameter(point, target) {
      return target.set(
        (point.x - this.min.x) / (this.max.x - this.min.x),
        (point.y - this.min.y) / (this.max.y - this.min.y),
        (point.z - this.min.z) / (this.max.z - this.min.z)
      );
    }
    intersectsBox(box) {
      return box.max.x < this.min.x || box.min.x > this.max.x || box.max.y < this.min.y || box.min.y > this.max.y || box.max.z < this.min.z || box.min.z > this.max.z ? false : true;
    }
    intersectsSphere(sphere) {
      this.clampPoint(sphere.center, _vector$b);
      return _vector$b.distanceToSquared(sphere.center) <= sphere.radius * sphere.radius;
    }
    intersectsPlane(plane) {
      let min, max2;
      if (plane.normal.x > 0) {
        min = plane.normal.x * this.min.x;
        max2 = plane.normal.x * this.max.x;
      } else {
        min = plane.normal.x * this.max.x;
        max2 = plane.normal.x * this.min.x;
      }
      if (plane.normal.y > 0) {
        min += plane.normal.y * this.min.y;
        max2 += plane.normal.y * this.max.y;
      } else {
        min += plane.normal.y * this.max.y;
        max2 += plane.normal.y * this.min.y;
      }
      if (plane.normal.z > 0) {
        min += plane.normal.z * this.min.z;
        max2 += plane.normal.z * this.max.z;
      } else {
        min += plane.normal.z * this.max.z;
        max2 += plane.normal.z * this.min.z;
      }
      return min <= -plane.constant && max2 >= -plane.constant;
    }
    intersectsTriangle(triangle) {
      if (this.isEmpty()) {
        return false;
      }
      this.getCenter(_center);
      _extents.subVectors(this.max, _center);
      _v0$2.subVectors(triangle.a, _center);
      _v1$7.subVectors(triangle.b, _center);
      _v2$4.subVectors(triangle.c, _center);
      _f0.subVectors(_v1$7, _v0$2);
      _f1.subVectors(_v2$4, _v1$7);
      _f2.subVectors(_v0$2, _v2$4);
      let axes = [
        0,
        -_f0.z,
        _f0.y,
        0,
        -_f1.z,
        _f1.y,
        0,
        -_f2.z,
        _f2.y,
        _f0.z,
        0,
        -_f0.x,
        _f1.z,
        0,
        -_f1.x,
        _f2.z,
        0,
        -_f2.x,
        -_f0.y,
        _f0.x,
        0,
        -_f1.y,
        _f1.x,
        0,
        -_f2.y,
        _f2.x,
        0
      ];
      if (!satForAxes(axes, _v0$2, _v1$7, _v2$4, _extents)) {
        return false;
      }
      axes = [1, 0, 0, 0, 1, 0, 0, 0, 1];
      if (!satForAxes(axes, _v0$2, _v1$7, _v2$4, _extents)) {
        return false;
      }
      _triangleNormal.crossVectors(_f0, _f1);
      axes = [_triangleNormal.x, _triangleNormal.y, _triangleNormal.z];
      return satForAxes(axes, _v0$2, _v1$7, _v2$4, _extents);
    }
    clampPoint(point, target) {
      return target.copy(point).clamp(this.min, this.max);
    }
    distanceToPoint(point) {
      return this.clampPoint(point, _vector$b).distanceTo(point);
    }
    getBoundingSphere(target) {
      if (this.isEmpty()) {
        target.makeEmpty();
      } else {
        this.getCenter(target.center);
        target.radius = this.getSize(_vector$b).length() * 0.5;
      }
      return target;
    }
    intersect(box) {
      this.min.max(box.min);
      this.max.min(box.max);
      if (this.isEmpty()) this.makeEmpty();
      return this;
    }
    union(box) {
      this.min.min(box.min);
      this.max.max(box.max);
      return this;
    }
    applyMatrix4(matrix) {
      if (this.isEmpty()) return this;
      _points[0].set(this.min.x, this.min.y, this.min.z).applyMatrix4(matrix);
      _points[1].set(this.min.x, this.min.y, this.max.z).applyMatrix4(matrix);
      _points[2].set(this.min.x, this.max.y, this.min.z).applyMatrix4(matrix);
      _points[3].set(this.min.x, this.max.y, this.max.z).applyMatrix4(matrix);
      _points[4].set(this.max.x, this.min.y, this.min.z).applyMatrix4(matrix);
      _points[5].set(this.max.x, this.min.y, this.max.z).applyMatrix4(matrix);
      _points[6].set(this.max.x, this.max.y, this.min.z).applyMatrix4(matrix);
      _points[7].set(this.max.x, this.max.y, this.max.z).applyMatrix4(matrix);
      this.setFromPoints(_points);
      return this;
    }
    translate(offset) {
      this.min.add(offset);
      this.max.add(offset);
      return this;
    }
    equals(box) {
      return box.min.equals(this.min) && box.max.equals(this.max);
    }
  };
  var _points = [
    /* @__PURE__ */ new Vector3(),
    /* @__PURE__ */ new Vector3(),
    /* @__PURE__ */ new Vector3(),
    /* @__PURE__ */ new Vector3(),
    /* @__PURE__ */ new Vector3(),
    /* @__PURE__ */ new Vector3(),
    /* @__PURE__ */ new Vector3(),
    /* @__PURE__ */ new Vector3()
  ];
  var _vector$b = /* @__PURE__ */ new Vector3();
  var _box$4 = /* @__PURE__ */ new Box3();
  var _v0$2 = /* @__PURE__ */ new Vector3();
  var _v1$7 = /* @__PURE__ */ new Vector3();
  var _v2$4 = /* @__PURE__ */ new Vector3();
  var _f0 = /* @__PURE__ */ new Vector3();
  var _f1 = /* @__PURE__ */ new Vector3();
  var _f2 = /* @__PURE__ */ new Vector3();
  var _center = /* @__PURE__ */ new Vector3();
  var _extents = /* @__PURE__ */ new Vector3();
  var _triangleNormal = /* @__PURE__ */ new Vector3();
  var _testAxis = /* @__PURE__ */ new Vector3();
  function satForAxes(axes, v0, v1, v2, extents) {
    for (let i = 0, j = axes.length - 3; i <= j; i += 3) {
      _testAxis.fromArray(axes, i);
      const r = extents.x * Math.abs(_testAxis.x) + extents.y * Math.abs(_testAxis.y) + extents.z * Math.abs(_testAxis.z);
      const p0 = v0.dot(_testAxis);
      const p1 = v1.dot(_testAxis);
      const p2 = v2.dot(_testAxis);
      if (Math.max(-Math.max(p0, p1, p2), Math.min(p0, p1, p2)) > r) {
        return false;
      }
    }
    return true;
  }
  var _box$3 = /* @__PURE__ */ new Box3();
  var _v1$6 = /* @__PURE__ */ new Vector3();
  var _v2$3 = /* @__PURE__ */ new Vector3();
  var Sphere = class {
    constructor(center = new Vector3(), radius = -1) {
      this.isSphere = true;
      this.center = center;
      this.radius = radius;
    }
    set(center, radius) {
      this.center.copy(center);
      this.radius = radius;
      return this;
    }
    setFromPoints(points, optionalCenter) {
      const center = this.center;
      if (optionalCenter !== void 0) {
        center.copy(optionalCenter);
      } else {
        _box$3.setFromPoints(points).getCenter(center);
      }
      let maxRadiusSq = 0;
      for (let i = 0, il = points.length; i < il; i++) {
        maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(points[i]));
      }
      this.radius = Math.sqrt(maxRadiusSq);
      return this;
    }
    copy(sphere) {
      this.center.copy(sphere.center);
      this.radius = sphere.radius;
      return this;
    }
    isEmpty() {
      return this.radius < 0;
    }
    makeEmpty() {
      this.center.set(0, 0, 0);
      this.radius = -1;
      return this;
    }
    containsPoint(point) {
      return point.distanceToSquared(this.center) <= this.radius * this.radius;
    }
    distanceToPoint(point) {
      return point.distanceTo(this.center) - this.radius;
    }
    intersectsSphere(sphere) {
      const radiusSum = this.radius + sphere.radius;
      return sphere.center.distanceToSquared(this.center) <= radiusSum * radiusSum;
    }
    intersectsBox(box) {
      return box.intersectsSphere(this);
    }
    intersectsPlane(plane) {
      return Math.abs(plane.distanceToPoint(this.center)) <= this.radius;
    }
    clampPoint(point, target) {
      const deltaLengthSq = this.center.distanceToSquared(point);
      target.copy(point);
      if (deltaLengthSq > this.radius * this.radius) {
        target.sub(this.center).normalize();
        target.multiplyScalar(this.radius).add(this.center);
      }
      return target;
    }
    getBoundingBox(target) {
      if (this.isEmpty()) {
        target.makeEmpty();
        return target;
      }
      target.set(this.center, this.center);
      target.expandByScalar(this.radius);
      return target;
    }
    applyMatrix4(matrix) {
      this.center.applyMatrix4(matrix);
      this.radius = this.radius * matrix.getMaxScaleOnAxis();
      return this;
    }
    translate(offset) {
      this.center.add(offset);
      return this;
    }
    expandByPoint(point) {
      if (this.isEmpty()) {
        this.center.copy(point);
        this.radius = 0;
        return this;
      }
      _v1$6.subVectors(point, this.center);
      const lengthSq = _v1$6.lengthSq();
      if (lengthSq > this.radius * this.radius) {
        const length = Math.sqrt(lengthSq);
        const delta = (length - this.radius) * 0.5;
        this.center.addScaledVector(_v1$6, delta / length);
        this.radius += delta;
      }
      return this;
    }
    union(sphere) {
      if (sphere.isEmpty()) {
        return this;
      }
      if (this.isEmpty()) {
        this.copy(sphere);
        return this;
      }
      if (this.center.equals(sphere.center) === true) {
        this.radius = Math.max(this.radius, sphere.radius);
      } else {
        _v2$3.subVectors(sphere.center, this.center).setLength(sphere.radius);
        this.expandByPoint(_v1$6.copy(sphere.center).add(_v2$3));
        this.expandByPoint(_v1$6.copy(sphere.center).sub(_v2$3));
      }
      return this;
    }
    equals(sphere) {
      return sphere.center.equals(this.center) && sphere.radius === this.radius;
    }
    clone() {
      return new this.constructor().copy(this);
    }
  };
  var _vector$a = /* @__PURE__ */ new Vector3();
  var _segCenter = /* @__PURE__ */ new Vector3();
  var _segDir = /* @__PURE__ */ new Vector3();
  var _diff = /* @__PURE__ */ new Vector3();
  var _edge1 = /* @__PURE__ */ new Vector3();
  var _edge2 = /* @__PURE__ */ new Vector3();
  var _normal$1 = /* @__PURE__ */ new Vector3();
  var Ray = class {
    constructor(origin = new Vector3(), direction = new Vector3(0, 0, -1)) {
      this.origin = origin;
      this.direction = direction;
    }
    set(origin, direction) {
      this.origin.copy(origin);
      this.direction.copy(direction);
      return this;
    }
    copy(ray) {
      this.origin.copy(ray.origin);
      this.direction.copy(ray.direction);
      return this;
    }
    at(t, target) {
      return target.copy(this.origin).addScaledVector(this.direction, t);
    }
    lookAt(v) {
      this.direction.copy(v).sub(this.origin).normalize();
      return this;
    }
    recast(t) {
      this.origin.copy(this.at(t, _vector$a));
      return this;
    }
    closestPointToPoint(point, target) {
      target.subVectors(point, this.origin);
      const directionDistance = target.dot(this.direction);
      if (directionDistance < 0) {
        return target.copy(this.origin);
      }
      return target.copy(this.origin).addScaledVector(this.direction, directionDistance);
    }
    distanceToPoint(point) {
      return Math.sqrt(this.distanceSqToPoint(point));
    }
    distanceSqToPoint(point) {
      const directionDistance = _vector$a.subVectors(point, this.origin).dot(this.direction);
      if (directionDistance < 0) {
        return this.origin.distanceToSquared(point);
      }
      _vector$a.copy(this.origin).addScaledVector(this.direction, directionDistance);
      return _vector$a.distanceToSquared(point);
    }
    distanceSqToSegment(v0, v1, optionalPointOnRay, optionalPointOnSegment) {
      _segCenter.copy(v0).add(v1).multiplyScalar(0.5);
      _segDir.copy(v1).sub(v0).normalize();
      _diff.copy(this.origin).sub(_segCenter);
      const segExtent = v0.distanceTo(v1) * 0.5;
      const a01 = -this.direction.dot(_segDir);
      const b0 = _diff.dot(this.direction);
      const b1 = -_diff.dot(_segDir);
      const c = _diff.lengthSq();
      const det = Math.abs(1 - a01 * a01);
      let s0, s1, sqrDist, extDet;
      if (det > 0) {
        s0 = a01 * b1 - b0;
        s1 = a01 * b0 - b1;
        extDet = segExtent * det;
        if (s0 >= 0) {
          if (s1 >= -extDet) {
            if (s1 <= extDet) {
              const invDet = 1 / det;
              s0 *= invDet;
              s1 *= invDet;
              sqrDist = s0 * (s0 + a01 * s1 + 2 * b0) + s1 * (a01 * s0 + s1 + 2 * b1) + c;
            } else {
              s1 = segExtent;
              s0 = Math.max(0, -(a01 * s1 + b0));
              sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
            }
          } else {
            s1 = -segExtent;
            s0 = Math.max(0, -(a01 * s1 + b0));
            sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
          }
        } else {
          if (s1 <= -extDet) {
            s0 = Math.max(0, -(-a01 * segExtent + b0));
            s1 = s0 > 0 ? -segExtent : Math.min(Math.max(-segExtent, -b1), segExtent);
            sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
          } else if (s1 <= extDet) {
            s0 = 0;
            s1 = Math.min(Math.max(-segExtent, -b1), segExtent);
            sqrDist = s1 * (s1 + 2 * b1) + c;
          } else {
            s0 = Math.max(0, -(a01 * segExtent + b0));
            s1 = s0 > 0 ? segExtent : Math.min(Math.max(-segExtent, -b1), segExtent);
            sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
          }
        }
      } else {
        s1 = a01 > 0 ? -segExtent : segExtent;
        s0 = Math.max(0, -(a01 * s1 + b0));
        sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
      }
      if (optionalPointOnRay) {
        optionalPointOnRay.copy(this.origin).addScaledVector(this.direction, s0);
      }
      if (optionalPointOnSegment) {
        optionalPointOnSegment.copy(_segCenter).addScaledVector(_segDir, s1);
      }
      return sqrDist;
    }
    intersectSphere(sphere, target) {
      _vector$a.subVectors(sphere.center, this.origin);
      const tca = _vector$a.dot(this.direction);
      const d2 = _vector$a.dot(_vector$a) - tca * tca;
      const radius2 = sphere.radius * sphere.radius;
      if (d2 > radius2) return null;
      const thc = Math.sqrt(radius2 - d2);
      const t0 = tca - thc;
      const t1 = tca + thc;
      if (t1 < 0) return null;
      if (t0 < 0) return this.at(t1, target);
      return this.at(t0, target);
    }
    intersectsSphere(sphere) {
      return this.distanceSqToPoint(sphere.center) <= sphere.radius * sphere.radius;
    }
    distanceToPlane(plane) {
      const denominator = plane.normal.dot(this.direction);
      if (denominator === 0) {
        if (plane.distanceToPoint(this.origin) === 0) {
          return 0;
        }
        return null;
      }
      const t = -(this.origin.dot(plane.normal) + plane.constant) / denominator;
      return t >= 0 ? t : null;
    }
    intersectPlane(plane, target) {
      const t = this.distanceToPlane(plane);
      if (t === null) {
        return null;
      }
      return this.at(t, target);
    }
    intersectsPlane(plane) {
      const distToPoint = plane.distanceToPoint(this.origin);
      if (distToPoint === 0) {
        return true;
      }
      const denominator = plane.normal.dot(this.direction);
      if (denominator * distToPoint < 0) {
        return true;
      }
      return false;
    }
    intersectBox(box, target) {
      let tmin, tmax, tymin, tymax, tzmin, tzmax;
      const invdirx = 1 / this.direction.x, invdiry = 1 / this.direction.y, invdirz = 1 / this.direction.z;
      const origin = this.origin;
      if (invdirx >= 0) {
        tmin = (box.min.x - origin.x) * invdirx;
        tmax = (box.max.x - origin.x) * invdirx;
      } else {
        tmin = (box.max.x - origin.x) * invdirx;
        tmax = (box.min.x - origin.x) * invdirx;
      }
      if (invdiry >= 0) {
        tymin = (box.min.y - origin.y) * invdiry;
        tymax = (box.max.y - origin.y) * invdiry;
      } else {
        tymin = (box.max.y - origin.y) * invdiry;
        tymax = (box.min.y - origin.y) * invdiry;
      }
      if (tmin > tymax || tymin > tmax) return null;
      if (tymin > tmin || isNaN(tmin)) tmin = tymin;
      if (tymax < tmax || isNaN(tmax)) tmax = tymax;
      if (invdirz >= 0) {
        tzmin = (box.min.z - origin.z) * invdirz;
        tzmax = (box.max.z - origin.z) * invdirz;
      } else {
        tzmin = (box.max.z - origin.z) * invdirz;
        tzmax = (box.min.z - origin.z) * invdirz;
      }
      if (tmin > tzmax || tzmin > tmax) return null;
      if (tzmin > tmin || tmin !== tmin) tmin = tzmin;
      if (tzmax < tmax || tmax !== tmax) tmax = tzmax;
      if (tmax < 0) return null;
      return this.at(tmin >= 0 ? tmin : tmax, target);
    }
    intersectsBox(box) {
      return this.intersectBox(box, _vector$a) !== null;
    }
    intersectTriangle(a, b, c, backfaceCulling, target) {
      _edge1.subVectors(b, a);
      _edge2.subVectors(c, a);
      _normal$1.crossVectors(_edge1, _edge2);
      let DdN = this.direction.dot(_normal$1);
      let sign2;
      if (DdN > 0) {
        if (backfaceCulling) return null;
        sign2 = 1;
      } else if (DdN < 0) {
        sign2 = -1;
        DdN = -DdN;
      } else {
        return null;
      }
      _diff.subVectors(this.origin, a);
      const DdQxE2 = sign2 * this.direction.dot(_edge2.crossVectors(_diff, _edge2));
      if (DdQxE2 < 0) {
        return null;
      }
      const DdE1xQ = sign2 * this.direction.dot(_edge1.cross(_diff));
      if (DdE1xQ < 0) {
        return null;
      }
      if (DdQxE2 + DdE1xQ > DdN) {
        return null;
      }
      const QdN = -sign2 * _diff.dot(_normal$1);
      if (QdN < 0) {
        return null;
      }
      return this.at(QdN / DdN, target);
    }
    applyMatrix4(matrix4) {
      this.origin.applyMatrix4(matrix4);
      this.direction.transformDirection(matrix4);
      return this;
    }
    equals(ray) {
      return ray.origin.equals(this.origin) && ray.direction.equals(this.direction);
    }
    clone() {
      return new this.constructor().copy(this);
    }
  };
  var Matrix4 = class _Matrix4 {
    constructor(n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44) {
      _Matrix4.prototype.isMatrix4 = true;
      this.elements = [
        1,
        0,
        0,
        0,
        0,
        1,
        0,
        0,
        0,
        0,
        1,
        0,
        0,
        0,
        0,
        1
      ];
      if (n11 !== void 0) {
        this.set(n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44);
      }
    }
    set(n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44) {
      const te = this.elements;
      te[0] = n11;
      te[4] = n12;
      te[8] = n13;
      te[12] = n14;
      te[1] = n21;
      te[5] = n22;
      te[9] = n23;
      te[13] = n24;
      te[2] = n31;
      te[6] = n32;
      te[10] = n33;
      te[14] = n34;
      te[3] = n41;
      te[7] = n42;
      te[11] = n43;
      te[15] = n44;
      return this;
    }
    identity() {
      this.set(
        1,
        0,
        0,
        0,
        0,
        1,
        0,
        0,
        0,
        0,
        1,
        0,
        0,
        0,
        0,
        1
      );
      return this;
    }
    clone() {
      return new _Matrix4().fromArray(this.elements);
    }
    copy(m) {
      const te = this.elements;
      const me = m.elements;
      te[0] = me[0];
      te[1] = me[1];
      te[2] = me[2];
      te[3] = me[3];
      te[4] = me[4];
      te[5] = me[5];
      te[6] = me[6];
      te[7] = me[7];
      te[8] = me[8];
      te[9] = me[9];
      te[10] = me[10];
      te[11] = me[11];
      te[12] = me[12];
      te[13] = me[13];
      te[14] = me[14];
      te[15] = me[15];
      return this;
    }
    copyPosition(m) {
      const te = this.elements, me = m.elements;
      te[12] = me[12];
      te[13] = me[13];
      te[14] = me[14];
      return this;
    }
    setFromMatrix3(m) {
      const me = m.elements;
      this.set(
        me[0],
        me[3],
        me[6],
        0,
        me[1],
        me[4],
        me[7],
        0,
        me[2],
        me[5],
        me[8],
        0,
        0,
        0,
        0,
        1
      );
      return this;
    }
    extractBasis(xAxis, yAxis, zAxis) {
      xAxis.setFromMatrixColumn(this, 0);
      yAxis.setFromMatrixColumn(this, 1);
      zAxis.setFromMatrixColumn(this, 2);
      return this;
    }
    makeBasis(xAxis, yAxis, zAxis) {
      this.set(
        xAxis.x,
        yAxis.x,
        zAxis.x,
        0,
        xAxis.y,
        yAxis.y,
        zAxis.y,
        0,
        xAxis.z,
        yAxis.z,
        zAxis.z,
        0,
        0,
        0,
        0,
        1
      );
      return this;
    }
    extractRotation(m) {
      const te = this.elements;
      const me = m.elements;
      const scaleX = 1 / _v1$5.setFromMatrixColumn(m, 0).length();
      const scaleY = 1 / _v1$5.setFromMatrixColumn(m, 1).length();
      const scaleZ = 1 / _v1$5.setFromMatrixColumn(m, 2).length();
      te[0] = me[0] * scaleX;
      te[1] = me[1] * scaleX;
      te[2] = me[2] * scaleX;
      te[3] = 0;
      te[4] = me[4] * scaleY;
      te[5] = me[5] * scaleY;
      te[6] = me[6] * scaleY;
      te[7] = 0;
      te[8] = me[8] * scaleZ;
      te[9] = me[9] * scaleZ;
      te[10] = me[10] * scaleZ;
      te[11] = 0;
      te[12] = 0;
      te[13] = 0;
      te[14] = 0;
      te[15] = 1;
      return this;
    }
    makeRotationFromEuler(euler) {
      const te = this.elements;
      const x = euler.x, y = euler.y, z = euler.z;
      const a = Math.cos(x), b = Math.sin(x);
      const c = Math.cos(y), d = Math.sin(y);
      const e = Math.cos(z), f = Math.sin(z);
      if (euler.order === "XYZ") {
        const ae = a * e, af = a * f, be = b * e, bf = b * f;
        te[0] = c * e;
        te[4] = -c * f;
        te[8] = d;
        te[1] = af + be * d;
        te[5] = ae - bf * d;
        te[9] = -b * c;
        te[2] = bf - ae * d;
        te[6] = be + af * d;
        te[10] = a * c;
      } else if (euler.order === "YXZ") {
        const ce = c * e, cf = c * f, de = d * e, df = d * f;
        te[0] = ce + df * b;
        te[4] = de * b - cf;
        te[8] = a * d;
        te[1] = a * f;
        te[5] = a * e;
        te[9] = -b;
        te[2] = cf * b - de;
        te[6] = df + ce * b;
        te[10] = a * c;
      } else if (euler.order === "ZXY") {
        const ce = c * e, cf = c * f, de = d * e, df = d * f;
        te[0] = ce - df * b;
        te[4] = -a * f;
        te[8] = de + cf * b;
        te[1] = cf + de * b;
        te[5] = a * e;
        te[9] = df - ce * b;
        te[2] = -a * d;
        te[6] = b;
        te[10] = a * c;
      } else if (euler.order === "ZYX") {
        const ae = a * e, af = a * f, be = b * e, bf = b * f;
        te[0] = c * e;
        te[4] = be * d - af;
        te[8] = ae * d + bf;
        te[1] = c * f;
        te[5] = bf * d + ae;
        te[9] = af * d - be;
        te[2] = -d;
        te[6] = b * c;
        te[10] = a * c;
      } else if (euler.order === "YZX") {
        const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
        te[0] = c * e;
        te[4] = bd - ac * f;
        te[8] = bc * f + ad;
        te[1] = f;
        te[5] = a * e;
        te[9] = -b * e;
        te[2] = -d * e;
        te[6] = ad * f + bc;
        te[10] = ac - bd * f;
      } else if (euler.order === "XZY") {
        const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
        te[0] = c * e;
        te[4] = -f;
        te[8] = d * e;
        te[1] = ac * f + bd;
        te[5] = a * e;
        te[9] = ad * f - bc;
        te[2] = bc * f - ad;
        te[6] = b * e;
        te[10] = bd * f + ac;
      }
      te[3] = 0;
      te[7] = 0;
      te[11] = 0;
      te[12] = 0;
      te[13] = 0;
      te[14] = 0;
      te[15] = 1;
      return this;
    }
    makeRotationFromQuaternion(q) {
      return this.compose(_zero, q, _one);
    }
    lookAt(eye, target, up) {
      const te = this.elements;
      _z.subVectors(eye, target);
      if (_z.lengthSq() === 0) {
        _z.z = 1;
      }
      _z.normalize();
      _x.crossVectors(up, _z);
      if (_x.lengthSq() === 0) {
        if (Math.abs(up.z) === 1) {
          _z.x += 1e-4;
        } else {
          _z.z += 1e-4;
        }
        _z.normalize();
        _x.crossVectors(up, _z);
      }
      _x.normalize();
      _y.crossVectors(_z, _x);
      te[0] = _x.x;
      te[4] = _y.x;
      te[8] = _z.x;
      te[1] = _x.y;
      te[5] = _y.y;
      te[9] = _z.y;
      te[2] = _x.z;
      te[6] = _y.z;
      te[10] = _z.z;
      return this;
    }
    multiply(m) {
      return this.multiplyMatrices(this, m);
    }
    premultiply(m) {
      return this.multiplyMatrices(m, this);
    }
    multiplyMatrices(a, b) {
      const ae = a.elements;
      const be = b.elements;
      const te = this.elements;
      const a11 = ae[0], a12 = ae[4], a13 = ae[8], a14 = ae[12];
      const a21 = ae[1], a22 = ae[5], a23 = ae[9], a24 = ae[13];
      const a31 = ae[2], a32 = ae[6], a33 = ae[10], a34 = ae[14];
      const a41 = ae[3], a42 = ae[7], a43 = ae[11], a44 = ae[15];
      const b11 = be[0], b12 = be[4], b13 = be[8], b14 = be[12];
      const b21 = be[1], b22 = be[5], b23 = be[9], b24 = be[13];
      const b31 = be[2], b32 = be[6], b33 = be[10], b34 = be[14];
      const b41 = be[3], b42 = be[7], b43 = be[11], b44 = be[15];
      te[0] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
      te[4] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
      te[8] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
      te[12] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
      te[1] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
      te[5] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
      te[9] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
      te[13] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
      te[2] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
      te[6] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
      te[10] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
      te[14] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
      te[3] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
      te[7] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
      te[11] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
      te[15] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
      return this;
    }
    multiplyScalar(s) {
      const te = this.elements;
      te[0] *= s;
      te[4] *= s;
      te[8] *= s;
      te[12] *= s;
      te[1] *= s;
      te[5] *= s;
      te[9] *= s;
      te[13] *= s;
      te[2] *= s;
      te[6] *= s;
      te[10] *= s;
      te[14] *= s;
      te[3] *= s;
      te[7] *= s;
      te[11] *= s;
      te[15] *= s;
      return this;
    }
    determinant() {
      const te = this.elements;
      const n11 = te[0], n12 = te[4], n13 = te[8], n14 = te[12];
      const n21 = te[1], n22 = te[5], n23 = te[9], n24 = te[13];
      const n31 = te[2], n32 = te[6], n33 = te[10], n34 = te[14];
      const n41 = te[3], n42 = te[7], n43 = te[11], n44 = te[15];
      return n41 * (+n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34) + n42 * (+n11 * n23 * n34 - n11 * n24 * n33 + n14 * n21 * n33 - n13 * n21 * n34 + n13 * n24 * n31 - n14 * n23 * n31) + n43 * (+n11 * n24 * n32 - n11 * n22 * n34 - n14 * n21 * n32 + n12 * n21 * n34 + n14 * n22 * n31 - n12 * n24 * n31) + n44 * (-n13 * n22 * n31 - n11 * n23 * n32 + n11 * n22 * n33 + n13 * n21 * n32 - n12 * n21 * n33 + n12 * n23 * n31);
    }
    transpose() {
      const te = this.elements;
      let tmp2;
      tmp2 = te[1];
      te[1] = te[4];
      te[4] = tmp2;
      tmp2 = te[2];
      te[2] = te[8];
      te[8] = tmp2;
      tmp2 = te[6];
      te[6] = te[9];
      te[9] = tmp2;
      tmp2 = te[3];
      te[3] = te[12];
      te[12] = tmp2;
      tmp2 = te[7];
      te[7] = te[13];
      te[13] = tmp2;
      tmp2 = te[11];
      te[11] = te[14];
      te[14] = tmp2;
      return this;
    }
    setPosition(x, y, z) {
      const te = this.elements;
      if (x.isVector3) {
        te[12] = x.x;
        te[13] = x.y;
        te[14] = x.z;
      } else {
        te[12] = x;
        te[13] = y;
        te[14] = z;
      }
      return this;
    }
    invert() {
      const te = this.elements, n11 = te[0], n21 = te[1], n31 = te[2], n41 = te[3], n12 = te[4], n22 = te[5], n32 = te[6], n42 = te[7], n13 = te[8], n23 = te[9], n33 = te[10], n43 = te[11], n14 = te[12], n24 = te[13], n34 = te[14], n44 = te[15], t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44, t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44, t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44, t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
      const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
      if (det === 0) return this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
      const detInv = 1 / det;
      te[0] = t11 * detInv;
      te[1] = (n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44) * detInv;
      te[2] = (n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44) * detInv;
      te[3] = (n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43) * detInv;
      te[4] = t12 * detInv;
      te[5] = (n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44) * detInv;
      te[6] = (n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44) * detInv;
      te[7] = (n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43) * detInv;
      te[8] = t13 * detInv;
      te[9] = (n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44) * detInv;
      te[10] = (n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44) * detInv;
      te[11] = (n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43) * detInv;
      te[12] = t14 * detInv;
      te[13] = (n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34) * detInv;
      te[14] = (n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34) * detInv;
      te[15] = (n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33) * detInv;
      return this;
    }
    scale(v) {
      const te = this.elements;
      const x = v.x, y = v.y, z = v.z;
      te[0] *= x;
      te[4] *= y;
      te[8] *= z;
      te[1] *= x;
      te[5] *= y;
      te[9] *= z;
      te[2] *= x;
      te[6] *= y;
      te[10] *= z;
      te[3] *= x;
      te[7] *= y;
      te[11] *= z;
      return this;
    }
    getMaxScaleOnAxis() {
      const te = this.elements;
      const scaleXSq = te[0] * te[0] + te[1] * te[1] + te[2] * te[2];
      const scaleYSq = te[4] * te[4] + te[5] * te[5] + te[6] * te[6];
      const scaleZSq = te[8] * te[8] + te[9] * te[9] + te[10] * te[10];
      return Math.sqrt(Math.max(scaleXSq, scaleYSq, scaleZSq));
    }
    makeTranslation(x, y, z) {
      if (x.isVector3) {
        this.set(
          1,
          0,
          0,
          x.x,
          0,
          1,
          0,
          x.y,
          0,
          0,
          1,
          x.z,
          0,
          0,
          0,
          1
        );
      } else {
        this.set(
          1,
          0,
          0,
          x,
          0,
          1,
          0,
          y,
          0,
          0,
          1,
          z,
          0,
          0,
          0,
          1
        );
      }
      return this;
    }
    makeRotationX(theta) {
      const c = Math.cos(theta), s = Math.sin(theta);
      this.set(
        1,
        0,
        0,
        0,
        0,
        c,
        -s,
        0,
        0,
        s,
        c,
        0,
        0,
        0,
        0,
        1
      );
      return this;
    }
    makeRotationY(theta) {
      const c = Math.cos(theta), s = Math.sin(theta);
      this.set(
        c,
        0,
        s,
        0,
        0,
        1,
        0,
        0,
        -s,
        0,
        c,
        0,
        0,
        0,
        0,
        1
      );
      return this;
    }
    makeRotationZ(theta) {
      const c = Math.cos(theta), s = Math.sin(theta);
      this.set(
        c,
        -s,
        0,
        0,
        s,
        c,
        0,
        0,
        0,
        0,
        1,
        0,
        0,
        0,
        0,
        1
      );
      return this;
    }
    makeRotationAxis(axis, angle) {
      const c = Math.cos(angle);
      const s = Math.sin(angle);
      const t = 1 - c;
      const x = axis.x, y = axis.y, z = axis.z;
      const tx = t * x, ty = t * y;
      this.set(
        tx * x + c,
        tx * y - s * z,
        tx * z + s * y,
        0,
        tx * y + s * z,
        ty * y + c,
        ty * z - s * x,
        0,
        tx * z - s * y,
        ty * z + s * x,
        t * z * z + c,
        0,
        0,
        0,
        0,
        1
      );
      return this;
    }
    makeScale(x, y, z) {
      this.set(
        x,
        0,
        0,
        0,
        0,
        y,
        0,
        0,
        0,
        0,
        z,
        0,
        0,
        0,
        0,
        1
      );
      return this;
    }
    makeShear(xy, xz, yx, yz, zx, zy) {
      this.set(
        1,
        yx,
        zx,
        0,
        xy,
        1,
        zy,
        0,
        xz,
        yz,
        1,
        0,
        0,
        0,
        0,
        1
      );
      return this;
    }
    compose(position, quaternion, scale) {
      const te = this.elements;
      const x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;
      const x2 = x + x, y2 = y + y, z2 = z + z;
      const xx = x * x2, xy = x * y2, xz = x * z2;
      const yy = y * y2, yz = y * z2, zz = z * z2;
      const wx = w * x2, wy = w * y2, wz = w * z2;
      const sx = scale.x, sy = scale.y, sz = scale.z;
      te[0] = (1 - (yy + zz)) * sx;
      te[1] = (xy + wz) * sx;
      te[2] = (xz - wy) * sx;
      te[3] = 0;
      te[4] = (xy - wz) * sy;
      te[5] = (1 - (xx + zz)) * sy;
      te[6] = (yz + wx) * sy;
      te[7] = 0;
      te[8] = (xz + wy) * sz;
      te[9] = (yz - wx) * sz;
      te[10] = (1 - (xx + yy)) * sz;
      te[11] = 0;
      te[12] = position.x;
      te[13] = position.y;
      te[14] = position.z;
      te[15] = 1;
      return this;
    }
    decompose(position, quaternion, scale) {
      const te = this.elements;
      let sx = _v1$5.set(te[0], te[1], te[2]).length();
      const sy = _v1$5.set(te[4], te[5], te[6]).length();
      const sz = _v1$5.set(te[8], te[9], te[10]).length();
      const det = this.determinant();
      if (det < 0) sx = -sx;
      position.x = te[12];
      position.y = te[13];
      position.z = te[14];
      _m1$2.copy(this);
      const invSX = 1 / sx;
      const invSY = 1 / sy;
      const invSZ = 1 / sz;
      _m1$2.elements[0] *= invSX;
      _m1$2.elements[1] *= invSX;
      _m1$2.elements[2] *= invSX;
      _m1$2.elements[4] *= invSY;
      _m1$2.elements[5] *= invSY;
      _m1$2.elements[6] *= invSY;
      _m1$2.elements[8] *= invSZ;
      _m1$2.elements[9] *= invSZ;
      _m1$2.elements[10] *= invSZ;
      quaternion.setFromRotationMatrix(_m1$2);
      scale.x = sx;
      scale.y = sy;
      scale.z = sz;
      return this;
    }
    makePerspective(left, right, top, bottom, near, far, coordinateSystem = WebGLCoordinateSystem) {
      const te = this.elements;
      const x = 2 * near / (right - left);
      const y = 2 * near / (top - bottom);
      const a = (right + left) / (right - left);
      const b = (top + bottom) / (top - bottom);
      let c, d;
      if (coordinateSystem === WebGLCoordinateSystem) {
        c = -(far + near) / (far - near);
        d = -2 * far * near / (far - near);
      } else if (coordinateSystem === WebGPUCoordinateSystem) {
        c = -far / (far - near);
        d = -far * near / (far - near);
      } else {
        throw new Error("THREE.Matrix4.makePerspective(): Invalid coordinate system: " + coordinateSystem);
      }
      te[0] = x;
      te[4] = 0;
      te[8] = a;
      te[12] = 0;
      te[1] = 0;
      te[5] = y;
      te[9] = b;
      te[13] = 0;
      te[2] = 0;
      te[6] = 0;
      te[10] = c;
      te[14] = d;
      te[3] = 0;
      te[7] = 0;
      te[11] = -1;
      te[15] = 0;
      return this;
    }
    makeOrthographic(left, right, top, bottom, near, far, coordinateSystem = WebGLCoordinateSystem) {
      const te = this.elements;
      const w = 1 / (right - left);
      const h = 1 / (top - bottom);
      const p = 1 / (far - near);
      const x = (right + left) * w;
      const y = (top + bottom) * h;
      let z, zInv;
      if (coordinateSystem === WebGLCoordinateSystem) {
        z = (far + near) * p;
        zInv = -2 * p;
      } else if (coordinateSystem === WebGPUCoordinateSystem) {
        z = near * p;
        zInv = -1 * p;
      } else {
        throw new Error("THREE.Matrix4.makeOrthographic(): Invalid coordinate system: " + coordinateSystem);
      }
      te[0] = 2 * w;
      te[4] = 0;
      te[8] = 0;
      te[12] = -x;
      te[1] = 0;
      te[5] = 2 * h;
      te[9] = 0;
      te[13] = -y;
      te[2] = 0;
      te[6] = 0;
      te[10] = zInv;
      te[14] = -z;
      te[3] = 0;
      te[7] = 0;
      te[11] = 0;
      te[15] = 1;
      return this;
    }
    equals(matrix) {
      const te = this.elements;
      const me = matrix.elements;
      for (let i = 0; i < 16; i++) {
        if (te[i] !== me[i]) return false;
      }
      return true;
    }
    fromArray(array, offset = 0) {
      for (let i = 0; i < 16; i++) {
        this.elements[i] = array[i + offset];
      }
      return this;
    }
    toArray(array = [], offset = 0) {
      const te = this.elements;
      array[offset] = te[0];
      array[offset + 1] = te[1];
      array[offset + 2] = te[2];
      array[offset + 3] = te[3];
      array[offset + 4] = te[4];
      array[offset + 5] = te[5];
      array[offset + 6] = te[6];
      array[offset + 7] = te[7];
      array[offset + 8] = te[8];
      array[offset + 9] = te[9];
      array[offset + 10] = te[10];
      array[offset + 11] = te[11];
      array[offset + 12] = te[12];
      array[offset + 13] = te[13];
      array[offset + 14] = te[14];
      array[offset + 15] = te[15];
      return array;
    }
  };
  var _v1$5 = /* @__PURE__ */ new Vector3();
  var _m1$2 = /* @__PURE__ */ new Matrix4();
  var _zero = /* @__PURE__ */ new Vector3(0, 0, 0);
  var _one = /* @__PURE__ */ new Vector3(1, 1, 1);
  var _x = /* @__PURE__ */ new Vector3();
  var _y = /* @__PURE__ */ new Vector3();
  var _z = /* @__PURE__ */ new Vector3();
  var _matrix$1 = /* @__PURE__ */ new Matrix4();
  var _quaternion$3 = /* @__PURE__ */ new Quaternion();
  var Euler = class _Euler {
    constructor(x = 0, y = 0, z = 0, order = _Euler.DEFAULT_ORDER) {
      this.isEuler = true;
      this._x = x;
      this._y = y;
      this._z = z;
      this._order = order;
    }
    get x() {
      return this._x;
    }
    set x(value) {
      this._x = value;
      this._onChangeCallback();
    }
    get y() {
      return this._y;
    }
    set y(value) {
      this._y = value;
      this._onChangeCallback();
    }
    get z() {
      return this._z;
    }
    set z(value) {
      this._z = value;
      this._onChangeCallback();
    }
    get order() {
      return this._order;
    }
    set order(value) {
      this._order = value;
      this._onChangeCallback();
    }
    set(x, y, z, order = this._order) {
      this._x = x;
      this._y = y;
      this._z = z;
      this._order = order;
      this._onChangeCallback();
      return this;
    }
    clone() {
      return new this.constructor(this._x, this._y, this._z, this._order);
    }
    copy(euler) {
      this._x = euler._x;
      this._y = euler._y;
      this._z = euler._z;
      this._order = euler._order;
      this._onChangeCallback();
      return this;
    }
    setFromRotationMatrix(m, order = this._order, update = true) {
      const te = m.elements;
      const m11 = te[0], m12 = te[4], m13 = te[8];
      const m21 = te[1], m22 = te[5], m23 = te[9];
      const m31 = te[2], m32 = te[6], m33 = te[10];
      switch (order) {
        case "XYZ":
          this._y = Math.asin(clamp(m13, -1, 1));
          if (Math.abs(m13) < 0.9999999) {
            this._x = Math.atan2(-m23, m33);
            this._z = Math.atan2(-m12, m11);
          } else {
            this._x = Math.atan2(m32, m22);
            this._z = 0;
          }
          break;
        case "YXZ":
          this._x = Math.asin(-clamp(m23, -1, 1));
          if (Math.abs(m23) < 0.9999999) {
            this._y = Math.atan2(m13, m33);
            this._z = Math.atan2(m21, m22);
          } else {
            this._y = Math.atan2(-m31, m11);
            this._z = 0;
          }
          break;
        case "ZXY":
          this._x = Math.asin(clamp(m32, -1, 1));
          if (Math.abs(m32) < 0.9999999) {
            this._y = Math.atan2(-m31, m33);
            this._z = Math.atan2(-m12, m22);
          } else {
            this._y = 0;
            this._z = Math.atan2(m21, m11);
          }
          break;
        case "ZYX":
          this._y = Math.asin(-clamp(m31, -1, 1));
          if (Math.abs(m31) < 0.9999999) {
            this._x = Math.atan2(m32, m33);
            this._z = Math.atan2(m21, m11);
          } else {
            this._x = 0;
            this._z = Math.atan2(-m12, m22);
          }
          break;
        case "YZX":
          this._z = Math.asin(clamp(m21, -1, 1));
          if (Math.abs(m21) < 0.9999999) {
            this._x = Math.atan2(-m23, m22);
            this._y = Math.atan2(-m31, m11);
          } else {
            this._x = 0;
            this._y = Math.atan2(m13, m33);
          }
          break;
        case "XZY":
          this._z = Math.asin(-clamp(m12, -1, 1));
          if (Math.abs(m12) < 0.9999999) {
            this._x = Math.atan2(m32, m22);
            this._y = Math.atan2(m13, m11);
          } else {
            this._x = Math.atan2(-m23, m33);
            this._y = 0;
          }
          break;
        default:
          console.warn("THREE.Euler: .setFromRotationMatrix() encountered an unknown order: " + order);
      }
      this._order = order;
      if (update === true) this._onChangeCallback();
      return this;
    }
    setFromQuaternion(q, order, update) {
      _matrix$1.makeRotationFromQuaternion(q);
      return this.setFromRotationMatrix(_matrix$1, order, update);
    }
    setFromVector3(v, order = this._order) {
      return this.set(v.x, v.y, v.z, order);
    }
    reorder(newOrder) {
      _quaternion$3.setFromEuler(this);
      return this.setFromQuaternion(_quaternion$3, newOrder);
    }
    equals(euler) {
      return euler._x === this._x && euler._y === this._y && euler._z === this._z && euler._order === this._order;
    }
    fromArray(array) {
      this._x = array[0];
      this._y = array[1];
      this._z = array[2];
      if (array[3] !== void 0) this._order = array[3];
      this._onChangeCallback();
      return this;
    }
    toArray(array = [], offset = 0) {
      array[offset] = this._x;
      array[offset + 1] = this._y;
      array[offset + 2] = this._z;
      array[offset + 3] = this._order;
      return array;
    }
    _onChange(callback) {
      this._onChangeCallback = callback;
      return this;
    }
    _onChangeCallback() {
    }
    *[Symbol.iterator]() {
      yield this._x;
      yield this._y;
      yield this._z;
      yield this._order;
    }
  };
  Euler.DEFAULT_ORDER = "XYZ";
  var Layers = class {
    constructor() {
      this.mask = 1 | 0;
    }
    set(channel) {
      this.mask = (1 << channel | 0) >>> 0;
    }
    enable(channel) {
      this.mask |= 1 << channel | 0;
    }
    enableAll() {
      this.mask = 4294967295 | 0;
    }
    toggle(channel) {
      this.mask ^= 1 << channel | 0;
    }
    disable(channel) {
      this.mask &= ~(1 << channel | 0);
    }
    disableAll() {
      this.mask = 0;
    }
    test(layers) {
      return (this.mask & layers.mask) !== 0;
    }
    isEnabled(channel) {
      return (this.mask & (1 << channel | 0)) !== 0;
    }
  };
  var _object3DId = 0;
  var _v1$4 = /* @__PURE__ */ new Vector3();
  var _q1 = /* @__PURE__ */ new Quaternion();
  var _m1$1 = /* @__PURE__ */ new Matrix4();
  var _target = /* @__PURE__ */ new Vector3();
  var _position$3 = /* @__PURE__ */ new Vector3();
  var _scale$2 = /* @__PURE__ */ new Vector3();
  var _quaternion$2 = /* @__PURE__ */ new Quaternion();
  var _xAxis = /* @__PURE__ */ new Vector3(1, 0, 0);
  var _yAxis = /* @__PURE__ */ new Vector3(0, 1, 0);
  var _zAxis = /* @__PURE__ */ new Vector3(0, 0, 1);
  var _addedEvent = { type: "added" };
  var _removedEvent = { type: "removed" };
  var Object3D = class _Object3D extends EventDispatcher {
    constructor() {
      super();
      this.isObject3D = true;
      Object.defineProperty(this, "id", { value: _object3DId++ });
      this.uuid = generateUUID();
      this.name = "";
      this.type = "Object3D";
      this.parent = null;
      this.children = [];
      this.up = _Object3D.DEFAULT_UP.clone();
      const position = new Vector3();
      const rotation = new Euler();
      const quaternion = new Quaternion();
      const scale = new Vector3(1, 1, 1);
      function onRotationChange() {
        quaternion.setFromEuler(rotation, false);
      }
      function onQuaternionChange() {
        rotation.setFromQuaternion(quaternion, void 0, false);
      }
      rotation._onChange(onRotationChange);
      quaternion._onChange(onQuaternionChange);
      Object.defineProperties(this, {
        position: {
          configurable: true,
          enumerable: true,
          value: position
        },
        rotation: {
          configurable: true,
          enumerable: true,
          value: rotation
        },
        quaternion: {
          configurable: true,
          enumerable: true,
          value: quaternion
        },
        scale: {
          configurable: true,
          enumerable: true,
          value: scale
        },
        modelViewMatrix: {
          value: new Matrix4()
        },
        normalMatrix: {
          value: new Matrix3()
        }
      });
      this.matrix = new Matrix4();
      this.matrixWorld = new Matrix4();
      this.matrixAutoUpdate = _Object3D.DEFAULT_MATRIX_AUTO_UPDATE;
      this.matrixWorldAutoUpdate = _Object3D.DEFAULT_MATRIX_WORLD_AUTO_UPDATE;
      this.matrixWorldNeedsUpdate = false;
      this.layers = new Layers();
      this.visible = true;
      this.castShadow = false;
      this.receiveShadow = false;
      this.frustumCulled = true;
      this.renderOrder = 0;
      this.animations = [];
      this.userData = {};
    }
    onBeforeShadow() {
    }
    onAfterShadow() {
    }
    onBeforeRender() {
    }
    onAfterRender() {
    }
    applyMatrix4(matrix) {
      if (this.matrixAutoUpdate) this.updateMatrix();
      this.matrix.premultiply(matrix);
      this.matrix.decompose(this.position, this.quaternion, this.scale);
    }
    applyQuaternion(q) {
      this.quaternion.premultiply(q);
      return this;
    }
    setRotationFromAxisAngle(axis, angle) {
      this.quaternion.setFromAxisAngle(axis, angle);
    }
    setRotationFromEuler(euler) {
      this.quaternion.setFromEuler(euler, true);
    }
    setRotationFromMatrix(m) {
      this.quaternion.setFromRotationMatrix(m);
    }
    setRotationFromQuaternion(q) {
      this.quaternion.copy(q);
    }
    rotateOnAxis(axis, angle) {
      _q1.setFromAxisAngle(axis, angle);
      this.quaternion.multiply(_q1);
      return this;
    }
    rotateOnWorldAxis(axis, angle) {
      _q1.setFromAxisAngle(axis, angle);
      this.quaternion.premultiply(_q1);
      return this;
    }
    rotateX(angle) {
      return this.rotateOnAxis(_xAxis, angle);
    }
    rotateY(angle) {
      return this.rotateOnAxis(_yAxis, angle);
    }
    rotateZ(angle) {
      return this.rotateOnAxis(_zAxis, angle);
    }
    translateOnAxis(axis, distance) {
      _v1$4.copy(axis).applyQuaternion(this.quaternion);
      this.position.add(_v1$4.multiplyScalar(distance));
      return this;
    }
    translateX(distance) {
      return this.translateOnAxis(_xAxis, distance);
    }
    translateY(distance) {
      return this.translateOnAxis(_yAxis, distance);
    }
    translateZ(distance) {
      return this.translateOnAxis(_zAxis, distance);
    }
    localToWorld(vector) {
      this.updateWorldMatrix(true, false);
      return vector.applyMatrix4(this.matrixWorld);
    }
    worldToLocal(vector) {
      this.updateWorldMatrix(true, false);
      return vector.applyMatrix4(_m1$1.copy(this.matrixWorld).invert());
    }
    lookAt(x, y, z) {
      if (x.isVector3) {
        _target.copy(x);
      } else {
        _target.set(x, y, z);
      }
      const parent = this.parent;
      this.updateWorldMatrix(true, false);
      _position$3.setFromMatrixPosition(this.matrixWorld);
      if (this.isCamera || this.isLight) {
        _m1$1.lookAt(_position$3, _target, this.up);
      } else {
        _m1$1.lookAt(_target, _position$3, this.up);
      }
      this.quaternion.setFromRotationMatrix(_m1$1);
      if (parent) {
        _m1$1.extractRotation(parent.matrixWorld);
        _q1.setFromRotationMatrix(_m1$1);
        this.quaternion.premultiply(_q1.invert());
      }
    }
    add(object) {
      if (arguments.length > 1) {
        for (let i = 0; i < arguments.length; i++) {
          this.add(arguments[i]);
        }
        return this;
      }
      if (object === this) {
        console.error("THREE.Object3D.add: object can't be added as a child of itself.", object);
        return this;
      }
      if (object && object.isObject3D) {
        if (object.parent !== null) {
          object.parent.remove(object);
        }
        object.parent = this;
        this.children.push(object);
        object.dispatchEvent(_addedEvent);
      } else {
        console.error("THREE.Object3D.add: object not an instance of THREE.Object3D.", object);
      }
      return this;
    }
    remove(object) {
      if (arguments.length > 1) {
        for (let i = 0; i < arguments.length; i++) {
          this.remove(arguments[i]);
        }
        return this;
      }
      const index = this.children.indexOf(object);
      if (index !== -1) {
        object.parent = null;
        this.children.splice(index, 1);
        object.dispatchEvent(_removedEvent);
      }
      return this;
    }
    removeFromParent() {
      const parent = this.parent;
      if (parent !== null) {
        parent.remove(this);
      }
      return this;
    }
    clear() {
      return this.remove(...this.children);
    }
    attach(object) {
      this.updateWorldMatrix(true, false);
      _m1$1.copy(this.matrixWorld).invert();
      if (object.parent !== null) {
        object.parent.updateWorldMatrix(true, false);
        _m1$1.multiply(object.parent.matrixWorld);
      }
      object.applyMatrix4(_m1$1);
      this.add(object);
      object.updateWorldMatrix(false, true);
      return this;
    }
    getObjectById(id) {
      return this.getObjectByProperty("id", id);
    }
    getObjectByName(name) {
      return this.getObjectByProperty("name", name);
    }
    getObjectByProperty(name, value) {
      if (this[name] === value) return this;
      for (let i = 0, l = this.children.length; i < l; i++) {
        const child = this.children[i];
        const object = child.getObjectByProperty(name, value);
        if (object !== void 0) {
          return object;
        }
      }
      return void 0;
    }
    getObjectsByProperty(name, value, result = []) {
      if (this[name] === value) result.push(this);
      const children = this.children;
      for (let i = 0, l = children.length; i < l; i++) {
        children[i].getObjectsByProperty(name, value, result);
      }
      return result;
    }
    getWorldPosition(target) {
      this.updateWorldMatrix(true, false);
      return target.setFromMatrixPosition(this.matrixWorld);
    }
    getWorldQuaternion(target) {
      this.updateWorldMatrix(true, false);
      this.matrixWorld.decompose(_position$3, target, _scale$2);
      return target;
    }
    getWorldScale(target) {
      this.updateWorldMatrix(true, false);
      this.matrixWorld.decompose(_position$3, _quaternion$2, target);
      return target;
    }
    getWorldDirection(target) {
      this.updateWorldMatrix(true, false);
      const e = this.matrixWorld.elements;
      return target.set(e[8], e[9], e[10]).normalize();
    }
    raycast() {
    }
    traverse(callback) {
      callback(this);
      const children = this.children;
      for (let i = 0, l = children.length; i < l; i++) {
        children[i].traverse(callback);
      }
    }
    traverseVisible(callback) {
      if (this.visible === false) return;
      callback(this);
      const children = this.children;
      for (let i = 0, l = children.length; i < l; i++) {
        children[i].traverseVisible(callback);
      }
    }
    traverseAncestors(callback) {
      const parent = this.parent;
      if (parent !== null) {
        callback(parent);
        parent.traverseAncestors(callback);
      }
    }
    updateMatrix() {
      this.matrix.compose(this.position, this.quaternion, this.scale);
      this.matrixWorldNeedsUpdate = true;
    }
    updateMatrixWorld(force) {
      if (this.matrixAutoUpdate) this.updateMatrix();
      if (this.matrixWorldNeedsUpdate || force) {
        if (this.parent === null) {
          this.matrixWorld.copy(this.matrix);
        } else {
          this.matrixWorld.multiplyMatrices(this.parent.matrixWorld, this.matrix);
        }
        this.matrixWorldNeedsUpdate = false;
        force = true;
      }
      const children = this.children;
      for (let i = 0, l = children.length; i < l; i++) {
        const child = children[i];
        if (child.matrixWorldAutoUpdate === true || force === true) {
          child.updateMatrixWorld(force);
        }
      }
    }
    updateWorldMatrix(updateParents, updateChildren) {
      const parent = this.parent;
      if (updateParents === true && parent !== null && parent.matrixWorldAutoUpdate === true) {
        parent.updateWorldMatrix(true, false);
      }
      if (this.matrixAutoUpdate) this.updateMatrix();
      if (this.parent === null) {
        this.matrixWorld.copy(this.matrix);
      } else {
        this.matrixWorld.multiplyMatrices(this.parent.matrixWorld, this.matrix);
      }
      if (updateChildren === true) {
        const children = this.children;
        for (let i = 0, l = children.length; i < l; i++) {
          const child = children[i];
          if (child.matrixWorldAutoUpdate === true) {
            child.updateWorldMatrix(false, true);
          }
        }
      }
    }
    toJSON(meta) {
      const isRootObject = meta === void 0 || typeof meta === "string";
      const output = {};
      if (isRootObject) {
        meta = {
          geometries: {},
          materials: {},
          textures: {},
          images: {},
          shapes: {},
          skeletons: {},
          animations: {},
          nodes: {}
        };
        output.metadata = {
          version: 4.6,
          type: "Object",
          generator: "Object3D.toJSON"
        };
      }
      const object = {};
      object.uuid = this.uuid;
      object.type = this.type;
      if (this.name !== "") object.name = this.name;
      if (this.castShadow === true) object.castShadow = true;
      if (this.receiveShadow === true) object.receiveShadow = true;
      if (this.visible === false) object.visible = false;
      if (this.frustumCulled === false) object.frustumCulled = false;
      if (this.renderOrder !== 0) object.renderOrder = this.renderOrder;
      if (Object.keys(this.userData).length > 0) object.userData = this.userData;
      object.layers = this.layers.mask;
      object.matrix = this.matrix.toArray();
      object.up = this.up.toArray();
      if (this.matrixAutoUpdate === false) object.matrixAutoUpdate = false;
      if (this.isInstancedMesh) {
        object.type = "InstancedMesh";
        object.count = this.count;
        object.instanceMatrix = this.instanceMatrix.toJSON();
        if (this.instanceColor !== null) object.instanceColor = this.instanceColor.toJSON();
      }
      if (this.isBatchedMesh) {
        object.type = "BatchedMesh";
        object.perObjectFrustumCulled = this.perObjectFrustumCulled;
        object.sortObjects = this.sortObjects;
        object.drawRanges = this._drawRanges;
        object.reservedRanges = this._reservedRanges;
        object.visibility = this._visibility;
        object.active = this._active;
        object.bounds = this._bounds.map((bound) => ({
          boxInitialized: bound.boxInitialized,
          boxMin: bound.box.min.toArray(),
          boxMax: bound.box.max.toArray(),
          sphereInitialized: bound.sphereInitialized,
          sphereRadius: bound.sphere.radius,
          sphereCenter: bound.sphere.center.toArray()
        }));
        object.maxGeometryCount = this._maxGeometryCount;
        object.maxVertexCount = this._maxVertexCount;
        object.maxIndexCount = this._maxIndexCount;
        object.geometryInitialized = this._geometryInitialized;
        object.geometryCount = this._geometryCount;
        object.matricesTexture = this._matricesTexture.toJSON(meta);
        if (this.boundingSphere !== null) {
          object.boundingSphere = {
            center: object.boundingSphere.center.toArray(),
            radius: object.boundingSphere.radius
          };
        }
        if (this.boundingBox !== null) {
          object.boundingBox = {
            min: object.boundingBox.min.toArray(),
            max: object.boundingBox.max.toArray()
          };
        }
      }
      function serialize(library, element) {
        if (library[element.uuid] === void 0) {
          library[element.uuid] = element.toJSON(meta);
        }
        return element.uuid;
      }
      if (this.isScene) {
        if (this.background) {
          if (this.background.isColor) {
            object.background = this.background.toJSON();
          } else if (this.background.isTexture) {
            object.background = this.background.toJSON(meta).uuid;
          }
        }
        if (this.environment && this.environment.isTexture && this.environment.isRenderTargetTexture !== true) {
          object.environment = this.environment.toJSON(meta).uuid;
        }
      } else if (this.isMesh || this.isLine || this.isPoints) {
        object.geometry = serialize(meta.geometries, this.geometry);
        const parameters = this.geometry.parameters;
        if (parameters !== void 0 && parameters.shapes !== void 0) {
          const shapes = parameters.shapes;
          if (Array.isArray(shapes)) {
            for (let i = 0, l = shapes.length; i < l; i++) {
              const shape = shapes[i];
              serialize(meta.shapes, shape);
            }
          } else {
            serialize(meta.shapes, shapes);
          }
        }
      }
      if (this.isSkinnedMesh) {
        object.bindMode = this.bindMode;
        object.bindMatrix = this.bindMatrix.toArray();
        if (this.skeleton !== void 0) {
          serialize(meta.skeletons, this.skeleton);
          object.skeleton = this.skeleton.uuid;
        }
      }
      if (this.material !== void 0) {
        if (Array.isArray(this.material)) {
          const uuids = [];
          for (let i = 0, l = this.material.length; i < l; i++) {
            uuids.push(serialize(meta.materials, this.material[i]));
          }
          object.material = uuids;
        } else {
          object.material = serialize(meta.materials, this.material);
        }
      }
      if (this.children.length > 0) {
        object.children = [];
        for (let i = 0; i < this.children.length; i++) {
          object.children.push(this.children[i].toJSON(meta).object);
        }
      }
      if (this.animations.length > 0) {
        object.animations = [];
        for (let i = 0; i < this.animations.length; i++) {
          const animation = this.animations[i];
          object.animations.push(serialize(meta.animations, animation));
        }
      }
      if (isRootObject) {
        const geometries = extractFromCache(meta.geometries);
        const materials = extractFromCache(meta.materials);
        const textures = extractFromCache(meta.textures);
        const images = extractFromCache(meta.images);
        const shapes = extractFromCache(meta.shapes);
        const skeletons = extractFromCache(meta.skeletons);
        const animations = extractFromCache(meta.animations);
        const nodes = extractFromCache(meta.nodes);
        if (geometries.length > 0) output.geometries = geometries;
        if (materials.length > 0) output.materials = materials;
        if (textures.length > 0) output.textures = textures;
        if (images.length > 0) output.images = images;
        if (shapes.length > 0) output.shapes = shapes;
        if (skeletons.length > 0) output.skeletons = skeletons;
        if (animations.length > 0) output.animations = animations;
        if (nodes.length > 0) output.nodes = nodes;
      }
      output.object = object;
      return output;
      function extractFromCache(cache) {
        const values = [];
        for (const key in cache) {
          const data = cache[key];
          delete data.metadata;
          values.push(data);
        }
        return values;
      }
    }
    clone(recursive) {
      return new this.constructor().copy(this, recursive);
    }
    copy(source, recursive = true) {
      this.name = source.name;
      this.up.copy(source.up);
      this.position.copy(source.position);
      this.rotation.order = source.rotation.order;
      this.quaternion.copy(source.quaternion);
      this.scale.copy(source.scale);
      this.matrix.copy(source.matrix);
      this.matrixWorld.copy(source.matrixWorld);
      this.matrixAutoUpdate = source.matrixAutoUpdate;
      this.matrixWorldAutoUpdate = source.matrixWorldAutoUpdate;
      this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
      this.layers.mask = source.layers.mask;
      this.visible = source.visible;
      this.castShadow = source.castShadow;
      this.receiveShadow = source.receiveShadow;
      this.frustumCulled = source.frustumCulled;
      this.renderOrder = source.renderOrder;
      this.animations = source.animations.slice();
      this.userData = JSON.parse(JSON.stringify(source.userData));
      if (recursive === true) {
        for (let i = 0; i < source.children.length; i++) {
          const child = source.children[i];
          this.add(child.clone());
        }
      }
      return this;
    }
  };
  Object3D.DEFAULT_UP = /* @__PURE__ */ new Vector3(0, 1, 0);
  Object3D.DEFAULT_MATRIX_AUTO_UPDATE = true;
  Object3D.DEFAULT_MATRIX_WORLD_AUTO_UPDATE = true;
  var _v0$1 = /* @__PURE__ */ new Vector3();
  var _v1$3 = /* @__PURE__ */ new Vector3();
  var _v2$2 = /* @__PURE__ */ new Vector3();
  var _v3$1 = /* @__PURE__ */ new Vector3();
  var _vab = /* @__PURE__ */ new Vector3();
  var _vac = /* @__PURE__ */ new Vector3();
  var _vbc = /* @__PURE__ */ new Vector3();
  var _vap = /* @__PURE__ */ new Vector3();
  var _vbp = /* @__PURE__ */ new Vector3();
  var _vcp = /* @__PURE__ */ new Vector3();
  var warnedGetUV = false;
  var Triangle = class _Triangle {
    constructor(a = new Vector3(), b = new Vector3(), c = new Vector3()) {
      this.a = a;
      this.b = b;
      this.c = c;
    }
    static getNormal(a, b, c, target) {
      target.subVectors(c, b);
      _v0$1.subVectors(a, b);
      target.cross(_v0$1);
      const targetLengthSq = target.lengthSq();
      if (targetLengthSq > 0) {
        return target.multiplyScalar(1 / Math.sqrt(targetLengthSq));
      }
      return target.set(0, 0, 0);
    }
    // static/instance method to calculate barycentric coordinates
    // based on: http://www.blackpawn.com/texts/pointinpoly/default.html
    static getBarycoord(point, a, b, c, target) {
      _v0$1.subVectors(c, a);
      _v1$3.subVectors(b, a);
      _v2$2.subVectors(point, a);
      const dot00 = _v0$1.dot(_v0$1);
      const dot01 = _v0$1.dot(_v1$3);
      const dot02 = _v0$1.dot(_v2$2);
      const dot11 = _v1$3.dot(_v1$3);
      const dot12 = _v1$3.dot(_v2$2);
      const denom = dot00 * dot11 - dot01 * dot01;
      if (denom === 0) {
        target.set(0, 0, 0);
        return null;
      }
      const invDenom = 1 / denom;
      const u = (dot11 * dot02 - dot01 * dot12) * invDenom;
      const v = (dot00 * dot12 - dot01 * dot02) * invDenom;
      return target.set(1 - u - v, v, u);
    }
    static containsPoint(point, a, b, c) {
      if (this.getBarycoord(point, a, b, c, _v3$1) === null) {
        return false;
      }
      return _v3$1.x >= 0 && _v3$1.y >= 0 && _v3$1.x + _v3$1.y <= 1;
    }
    static getUV(point, p1, p2, p3, uv1, uv2, uv3, target) {
      if (warnedGetUV === false) {
        console.warn("THREE.Triangle.getUV() has been renamed to THREE.Triangle.getInterpolation().");
        warnedGetUV = true;
      }
      return this.getInterpolation(point, p1, p2, p3, uv1, uv2, uv3, target);
    }
    static getInterpolation(point, p1, p2, p3, v1, v2, v3, target) {
      if (this.getBarycoord(point, p1, p2, p3, _v3$1) === null) {
        target.x = 0;
        target.y = 0;
        if ("z" in target) target.z = 0;
        if ("w" in target) target.w = 0;
        return null;
      }
      target.setScalar(0);
      target.addScaledVector(v1, _v3$1.x);
      target.addScaledVector(v2, _v3$1.y);
      target.addScaledVector(v3, _v3$1.z);
      return target;
    }
    static isFrontFacing(a, b, c, direction) {
      _v0$1.subVectors(c, b);
      _v1$3.subVectors(a, b);
      return _v0$1.cross(_v1$3).dot(direction) < 0 ? true : false;
    }
    set(a, b, c) {
      this.a.copy(a);
      this.b.copy(b);
      this.c.copy(c);
      return this;
    }
    setFromPointsAndIndices(points, i0, i1, i2) {
      this.a.copy(points[i0]);
      this.b.copy(points[i1]);
      this.c.copy(points[i2]);
      return this;
    }
    setFromAttributeAndIndices(attribute, i0, i1, i2) {
      this.a.fromBufferAttribute(attribute, i0);
      this.b.fromBufferAttribute(attribute, i1);
      this.c.fromBufferAttribute(attribute, i2);
      return this;
    }
    clone() {
      return new this.constructor().copy(this);
    }
    copy(triangle) {
      this.a.copy(triangle.a);
      this.b.copy(triangle.b);
      this.c.copy(triangle.c);
      return this;
    }
    getArea() {
      _v0$1.subVectors(this.c, this.b);
      _v1$3.subVectors(this.a, this.b);
      return _v0$1.cross(_v1$3).length() * 0.5;
    }
    getMidpoint(target) {
      return target.addVectors(this.a, this.b).add(this.c).multiplyScalar(1 / 3);
    }
    getNormal(target) {
      return _Triangle.getNormal(this.a, this.b, this.c, target);
    }
    getPlane(target) {
      return target.setFromCoplanarPoints(this.a, this.b, this.c);
    }
    getBarycoord(point, target) {
      return _Triangle.getBarycoord(point, this.a, this.b, this.c, target);
    }
    getUV(point, uv1, uv2, uv3, target) {
      if (warnedGetUV === false) {
        console.warn("THREE.Triangle.getUV() has been renamed to THREE.Triangle.getInterpolation().");
        warnedGetUV = true;
      }
      return _Triangle.getInterpolation(point, this.a, this.b, this.c, uv1, uv2, uv3, target);
    }
    getInterpolation(point, v1, v2, v3, target) {
      return _Triangle.getInterpolation(point, this.a, this.b, this.c, v1, v2, v3, target);
    }
    containsPoint(point) {
      return _Triangle.containsPoint(point, this.a, this.b, this.c);
    }
    isFrontFacing(direction) {
      return _Triangle.isFrontFacing(this.a, this.b, this.c, direction);
    }
    intersectsBox(box) {
      return box.intersectsTriangle(this);
    }
    closestPointToPoint(p, target) {
      const a = this.a, b = this.b, c = this.c;
      let v, w;
      _vab.subVectors(b, a);
      _vac.subVectors(c, a);
      _vap.subVectors(p, a);
      const d1 = _vab.dot(_vap);
      const d2 = _vac.dot(_vap);
      if (d1 <= 0 && d2 <= 0) {
        return target.copy(a);
      }
      _vbp.subVectors(p, b);
      const d3 = _vab.dot(_vbp);
      const d4 = _vac.dot(_vbp);
      if (d3 >= 0 && d4 <= d3) {
        return target.copy(b);
      }
      const vc = d1 * d4 - d3 * d2;
      if (vc <= 0 && d1 >= 0 && d3 <= 0) {
        v = d1 / (d1 - d3);
        return target.copy(a).addScaledVector(_vab, v);
      }
      _vcp.subVectors(p, c);
      const d5 = _vab.dot(_vcp);
      const d6 = _vac.dot(_vcp);
      if (d6 >= 0 && d5 <= d6) {
        return target.copy(c);
      }
      const vb = d5 * d2 - d1 * d6;
      if (vb <= 0 && d2 >= 0 && d6 <= 0) {
        w = d2 / (d2 - d6);
        return target.copy(a).addScaledVector(_vac, w);
      }
      const va = d3 * d6 - d5 * d4;
      if (va <= 0 && d4 - d3 >= 0 && d5 - d6 >= 0) {
        _vbc.subVectors(c, b);
        w = (d4 - d3) / (d4 - d3 + (d5 - d6));
        return target.copy(b).addScaledVector(_vbc, w);
      }
      const denom = 1 / (va + vb + vc);
      v = vb * denom;
      w = vc * denom;
      return target.copy(a).addScaledVector(_vab, v).addScaledVector(_vac, w);
    }
    equals(triangle) {
      return triangle.a.equals(this.a) && triangle.b.equals(this.b) && triangle.c.equals(this.c);
    }
  };
  var _colorKeywords = {
    "aliceblue": 15792383,
    "antiquewhite": 16444375,
    "aqua": 65535,
    "aquamarine": 8388564,
    "azure": 15794175,
    "beige": 16119260,
    "bisque": 16770244,
    "black": 0,
    "blanchedalmond": 16772045,
    "blue": 255,
    "blueviolet": 9055202,
    "brown": 10824234,
    "burlywood": 14596231,
    "cadetblue": 6266528,
    "chartreuse": 8388352,
    "chocolate": 13789470,
    "coral": 16744272,
    "cornflowerblue": 6591981,
    "cornsilk": 16775388,
    "crimson": 14423100,
    "cyan": 65535,
    "darkblue": 139,
    "darkcyan": 35723,
    "darkgoldenrod": 12092939,
    "darkgray": 11119017,
    "darkgreen": 25600,
    "darkgrey": 11119017,
    "darkkhaki": 12433259,
    "darkmagenta": 9109643,
    "darkolivegreen": 5597999,
    "darkorange": 16747520,
    "darkorchid": 10040012,
    "darkred": 9109504,
    "darksalmon": 15308410,
    "darkseagreen": 9419919,
    "darkslateblue": 4734347,
    "darkslategray": 3100495,
    "darkslategrey": 3100495,
    "darkturquoise": 52945,
    "darkviolet": 9699539,
    "deeppink": 16716947,
    "deepskyblue": 49151,
    "dimgray": 6908265,
    "dimgrey": 6908265,
    "dodgerblue": 2003199,
    "firebrick": 11674146,
    "floralwhite": 16775920,
    "forestgreen": 2263842,
    "fuchsia": 16711935,
    "gainsboro": 14474460,
    "ghostwhite": 16316671,
    "gold": 16766720,
    "goldenrod": 14329120,
    "gray": 8421504,
    "green": 32768,
    "greenyellow": 11403055,
    "grey": 8421504,
    "honeydew": 15794160,
    "hotpink": 16738740,
    "indianred": 13458524,
    "indigo": 4915330,
    "ivory": 16777200,
    "khaki": 15787660,
    "lavender": 15132410,
    "lavenderblush": 16773365,
    "lawngreen": 8190976,
    "lemonchiffon": 16775885,
    "lightblue": 11393254,
    "lightcoral": 15761536,
    "lightcyan": 14745599,
    "lightgoldenrodyellow": 16448210,
    "lightgray": 13882323,
    "lightgreen": 9498256,
    "lightgrey": 13882323,
    "lightpink": 16758465,
    "lightsalmon": 16752762,
    "lightseagreen": 2142890,
    "lightskyblue": 8900346,
    "lightslategray": 7833753,
    "lightslategrey": 7833753,
    "lightsteelblue": 11584734,
    "lightyellow": 16777184,
    "lime": 65280,
    "limegreen": 3329330,
    "linen": 16445670,
    "magenta": 16711935,
    "maroon": 8388608,
    "mediumaquamarine": 6737322,
    "mediumblue": 205,
    "mediumorchid": 12211667,
    "mediumpurple": 9662683,
    "mediumseagreen": 3978097,
    "mediumslateblue": 8087790,
    "mediumspringgreen": 64154,
    "mediumturquoise": 4772300,
    "mediumvioletred": 13047173,
    "midnightblue": 1644912,
    "mintcream": 16121850,
    "mistyrose": 16770273,
    "moccasin": 16770229,
    "navajowhite": 16768685,
    "navy": 128,
    "oldlace": 16643558,
    "olive": 8421376,
    "olivedrab": 7048739,
    "orange": 16753920,
    "orangered": 16729344,
    "orchid": 14315734,
    "palegoldenrod": 15657130,
    "palegreen": 10025880,
    "paleturquoise": 11529966,
    "palevioletred": 14381203,
    "papayawhip": 16773077,
    "peachpuff": 16767673,
    "peru": 13468991,
    "pink": 16761035,
    "plum": 14524637,
    "powderblue": 11591910,
    "purple": 8388736,
    "rebeccapurple": 6697881,
    "red": 16711680,
    "rosybrown": 12357519,
    "royalblue": 4286945,
    "saddlebrown": 9127187,
    "salmon": 16416882,
    "sandybrown": 16032864,
    "seagreen": 3050327,
    "seashell": 16774638,
    "sienna": 10506797,
    "silver": 12632256,
    "skyblue": 8900331,
    "slateblue": 6970061,
    "slategray": 7372944,
    "slategrey": 7372944,
    "snow": 16775930,
    "springgreen": 65407,
    "steelblue": 4620980,
    "tan": 13808780,
    "teal": 32896,
    "thistle": 14204888,
    "tomato": 16737095,
    "turquoise": 4251856,
    "violet": 15631086,
    "wheat": 16113331,
    "white": 16777215,
    "whitesmoke": 16119285,
    "yellow": 16776960,
    "yellowgreen": 10145074
  };
  var _hslA = { h: 0, s: 0, l: 0 };
  var _hslB = { h: 0, s: 0, l: 0 };
  function hue2rgb(p, q, t) {
    if (t < 0) t += 1;
    if (t > 1) t -= 1;
    if (t < 1 / 6) return p + (q - p) * 6 * t;
    if (t < 1 / 2) return q;
    if (t < 2 / 3) return p + (q - p) * 6 * (2 / 3 - t);
    return p;
  }
  var Color = class {
    constructor(r, g, b) {
      this.isColor = true;
      this.r = 1;
      this.g = 1;
      this.b = 1;
      return this.set(r, g, b);
    }
    set(r, g, b) {
      if (g === void 0 && b === void 0) {
        const value = r;
        if (value && value.isColor) {
          this.copy(value);
        } else if (typeof value === "number") {
          this.setHex(value);
        } else if (typeof value === "string") {
          this.setStyle(value);
        }
      } else {
        this.setRGB(r, g, b);
      }
      return this;
    }
    setScalar(scalar) {
      this.r = scalar;
      this.g = scalar;
      this.b = scalar;
      return this;
    }
    setHex(hex, colorSpace = SRGBColorSpace) {
      hex = Math.floor(hex);
      this.r = (hex >> 16 & 255) / 255;
      this.g = (hex >> 8 & 255) / 255;
      this.b = (hex & 255) / 255;
      ColorManagement.toWorkingColorSpace(this, colorSpace);
      return this;
    }
    setRGB(r, g, b, colorSpace = ColorManagement.workingColorSpace) {
      this.r = r;
      this.g = g;
      this.b = b;
      ColorManagement.toWorkingColorSpace(this, colorSpace);
      return this;
    }
    setHSL(h, s, l, colorSpace = ColorManagement.workingColorSpace) {
      h = euclideanModulo(h, 1);
      s = clamp(s, 0, 1);
      l = clamp(l, 0, 1);
      if (s === 0) {
        this.r = this.g = this.b = l;
      } else {
        const p = l <= 0.5 ? l * (1 + s) : l + s - l * s;
        const q = 2 * l - p;
        this.r = hue2rgb(q, p, h + 1 / 3);
        this.g = hue2rgb(q, p, h);
        this.b = hue2rgb(q, p, h - 1 / 3);
      }
      ColorManagement.toWorkingColorSpace(this, colorSpace);
      return this;
    }
    setStyle(style, colorSpace = SRGBColorSpace) {
      function handleAlpha(string) {
        if (string === void 0) return;
        if (parseFloat(string) < 1) {
          console.warn("THREE.Color: Alpha component of " + style + " will be ignored.");
        }
      }
      let m;
      if (m = /^(\w+)\(([^\)]*)\)/.exec(style)) {
        let color;
        const name = m[1];
        const components = m[2];
        switch (name) {
          case "rgb":
          case "rgba":
            if (color = /^\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
              handleAlpha(color[4]);
              return this.setRGB(
                Math.min(255, parseInt(color[1], 10)) / 255,
                Math.min(255, parseInt(color[2], 10)) / 255,
                Math.min(255, parseInt(color[3], 10)) / 255,
                colorSpace
              );
            }
            if (color = /^\s*(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
              handleAlpha(color[4]);
              return this.setRGB(
                Math.min(100, parseInt(color[1], 10)) / 100,
                Math.min(100, parseInt(color[2], 10)) / 100,
                Math.min(100, parseInt(color[3], 10)) / 100,
                colorSpace
              );
            }
            break;
          case "hsl":
          case "hsla":
            if (color = /^\s*(\d*\.?\d+)\s*,\s*(\d*\.?\d+)\%\s*,\s*(\d*\.?\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
              handleAlpha(color[4]);
              return this.setHSL(
                parseFloat(color[1]) / 360,
                parseFloat(color[2]) / 100,
                parseFloat(color[3]) / 100,
                colorSpace
              );
            }
            break;
          default:
            console.warn("THREE.Color: Unknown color model " + style);
        }
      } else if (m = /^\#([A-Fa-f\d]+)$/.exec(style)) {
        const hex = m[1];
        const size = hex.length;
        if (size === 3) {
          return this.setRGB(
            parseInt(hex.charAt(0), 16) / 15,
            parseInt(hex.charAt(1), 16) / 15,
            parseInt(hex.charAt(2), 16) / 15,
            colorSpace
          );
        } else if (size === 6) {
          return this.setHex(parseInt(hex, 16), colorSpace);
        } else {
          console.warn("THREE.Color: Invalid hex color " + style);
        }
      } else if (style && style.length > 0) {
        return this.setColorName(style, colorSpace);
      }
      return this;
    }
    setColorName(style, colorSpace = SRGBColorSpace) {
      const hex = _colorKeywords[style.toLowerCase()];
      if (hex !== void 0) {
        this.setHex(hex, colorSpace);
      } else {
        console.warn("THREE.Color: Unknown color " + style);
      }
      return this;
    }
    clone() {
      return new this.constructor(this.r, this.g, this.b);
    }
    copy(color) {
      this.r = color.r;
      this.g = color.g;
      this.b = color.b;
      return this;
    }
    copySRGBToLinear(color) {
      this.r = SRGBToLinear(color.r);
      this.g = SRGBToLinear(color.g);
      this.b = SRGBToLinear(color.b);
      return this;
    }
    copyLinearToSRGB(color) {
      this.r = LinearToSRGB(color.r);
      this.g = LinearToSRGB(color.g);
      this.b = LinearToSRGB(color.b);
      return this;
    }
    convertSRGBToLinear() {
      this.copySRGBToLinear(this);
      return this;
    }
    convertLinearToSRGB() {
      this.copyLinearToSRGB(this);
      return this;
    }
    getHex(colorSpace = SRGBColorSpace) {
      ColorManagement.fromWorkingColorSpace(_color.copy(this), colorSpace);
      return Math.round(clamp(_color.r * 255, 0, 255)) * 65536 + Math.round(clamp(_color.g * 255, 0, 255)) * 256 + Math.round(clamp(_color.b * 255, 0, 255));
    }
    getHexString(colorSpace = SRGBColorSpace) {
      return ("000000" + this.getHex(colorSpace).toString(16)).slice(-6);
    }
    getHSL(target, colorSpace = ColorManagement.workingColorSpace) {
      ColorManagement.fromWorkingColorSpace(_color.copy(this), colorSpace);
      const r = _color.r, g = _color.g, b = _color.b;
      const max2 = Math.max(r, g, b);
      const min = Math.min(r, g, b);
      let hue, saturation;
      const lightness = (min + max2) / 2;
      if (min === max2) {
        hue = 0;
        saturation = 0;
      } else {
        const delta = max2 - min;
        saturation = lightness <= 0.5 ? delta / (max2 + min) : delta / (2 - max2 - min);
        switch (max2) {
          case r:
            hue = (g - b) / delta + (g < b ? 6 : 0);
            break;
          case g:
            hue = (b - r) / delta + 2;
            break;
          case b:
            hue = (r - g) / delta + 4;
            break;
        }
        hue /= 6;
      }
      target.h = hue;
      target.s = saturation;
      target.l = lightness;
      return target;
    }
    getRGB(target, colorSpace = ColorManagement.workingColorSpace) {
      ColorManagement.fromWorkingColorSpace(_color.copy(this), colorSpace);
      target.r = _color.r;
      target.g = _color.g;
      target.b = _color.b;
      return target;
    }
    getStyle(colorSpace = SRGBColorSpace) {
      ColorManagement.fromWorkingColorSpace(_color.copy(this), colorSpace);
      const r = _color.r, g = _color.g, b = _color.b;
      if (colorSpace !== SRGBColorSpace) {
        return `color(${colorSpace} ${r.toFixed(3)} ${g.toFixed(3)} ${b.toFixed(3)})`;
      }
      return `rgb(${Math.round(r * 255)},${Math.round(g * 255)},${Math.round(b * 255)})`;
    }
    offsetHSL(h, s, l) {
      this.getHSL(_hslA);
      return this.setHSL(_hslA.h + h, _hslA.s + s, _hslA.l + l);
    }
    add(color) {
      this.r += color.r;
      this.g += color.g;
      this.b += color.b;
      return this;
    }
    addColors(color1, color2) {
      this.r = color1.r + color2.r;
      this.g = color1.g + color2.g;
      this.b = color1.b + color2.b;
      return this;
    }
    addScalar(s) {
      this.r += s;
      this.g += s;
      this.b += s;
      return this;
    }
    sub(color) {
      this.r = Math.max(0, this.r - color.r);
      this.g = Math.max(0, this.g - color.g);
      this.b = Math.max(0, this.b - color.b);
      return this;
    }
    multiply(color) {
      this.r *= color.r;
      this.g *= color.g;
      this.b *= color.b;
      return this;
    }
    multiplyScalar(s) {
      this.r *= s;
      this.g *= s;
      this.b *= s;
      return this;
    }
    lerp(color, alpha) {
      this.r += (color.r - this.r) * alpha;
      this.g += (color.g - this.g) * alpha;
      this.b += (color.b - this.b) * alpha;
      return this;
    }
    lerpColors(color1, color2, alpha) {
      this.r = color1.r + (color2.r - color1.r) * alpha;
      this.g = color1.g + (color2.g - color1.g) * alpha;
      this.b = color1.b + (color2.b - color1.b) * alpha;
      return this;
    }
    lerpHSL(color, alpha) {
      this.getHSL(_hslA);
      color.getHSL(_hslB);
      const h = lerp(_hslA.h, _hslB.h, alpha);
      const s = lerp(_hslA.s, _hslB.s, alpha);
      const l = lerp(_hslA.l, _hslB.l, alpha);
      this.setHSL(h, s, l);
      return this;
    }
    setFromVector3(v) {
      this.r = v.x;
      this.g = v.y;
      this.b = v.z;
      return this;
    }
    applyMatrix3(m) {
      const r = this.r, g = this.g, b = this.b;
      const e = m.elements;
      this.r = e[0] * r + e[3] * g + e[6] * b;
      this.g = e[1] * r + e[4] * g + e[7] * b;
      this.b = e[2] * r + e[5] * g + e[8] * b;
      return this;
    }
    equals(c) {
      return c.r === this.r && c.g === this.g && c.b === this.b;
    }
    fromArray(array, offset = 0) {
      this.r = array[offset];
      this.g = array[offset + 1];
      this.b = array[offset + 2];
      return this;
    }
    toArray(array = [], offset = 0) {
      array[offset] = this.r;
      array[offset + 1] = this.g;
      array[offset + 2] = this.b;
      return array;
    }
    fromBufferAttribute(attribute, index) {
      this.r = attribute.getX(index);
      this.g = attribute.getY(index);
      this.b = attribute.getZ(index);
      return this;
    }
    toJSON() {
      return this.getHex();
    }
    *[Symbol.iterator]() {
      yield this.r;
      yield this.g;
      yield this.b;
    }
  };
  var _color = /* @__PURE__ */ new Color();
  Color.NAMES = _colorKeywords;
  var _materialId = 0;
  var Material = class extends EventDispatcher {
    constructor() {
      super();
      this.isMaterial = true;
      Object.defineProperty(this, "id", { value: _materialId++ });
      this.uuid = generateUUID();
      this.name = "";
      this.type = "Material";
      this.blending = NormalBlending;
      this.side = FrontSide;
      this.vertexColors = false;
      this.opacity = 1;
      this.transparent = false;
      this.alphaHash = false;
      this.blendSrc = SrcAlphaFactor;
      this.blendDst = OneMinusSrcAlphaFactor;
      this.blendEquation = AddEquation;
      this.blendSrcAlpha = null;
      this.blendDstAlpha = null;
      this.blendEquationAlpha = null;
      this.blendColor = new Color(0, 0, 0);
      this.blendAlpha = 0;
      this.depthFunc = LessEqualDepth;
      this.depthTest = true;
      this.depthWrite = true;
      this.stencilWriteMask = 255;
      this.stencilFunc = AlwaysStencilFunc;
      this.stencilRef = 0;
      this.stencilFuncMask = 255;
      this.stencilFail = KeepStencilOp;
      this.stencilZFail = KeepStencilOp;
      this.stencilZPass = KeepStencilOp;
      this.stencilWrite = false;
      this.clippingPlanes = null;
      this.clipIntersection = false;
      this.clipShadows = false;
      this.shadowSide = null;
      this.colorWrite = true;
      this.precision = null;
      this.polygonOffset = false;
      this.polygonOffsetFactor = 0;
      this.polygonOffsetUnits = 0;
      this.dithering = false;
      this.alphaToCoverage = false;
      this.premultipliedAlpha = false;
      this.forceSinglePass = false;
      this.visible = true;
      this.toneMapped = true;
      this.userData = {};
      this.version = 0;
      this._alphaTest = 0;
    }
    get alphaTest() {
      return this._alphaTest;
    }
    set alphaTest(value) {
      if (this._alphaTest > 0 !== value > 0) {
        this.version++;
      }
      this._alphaTest = value;
    }
    onBuild() {
    }
    onBeforeRender() {
    }
    onBeforeCompile() {
    }
    customProgramCacheKey() {
      return this.onBeforeCompile.toString();
    }
    setValues(values) {
      if (values === void 0) return;
      for (const key in values) {
        const newValue = values[key];
        if (newValue === void 0) {
          console.warn(`THREE.Material: parameter '${key}' has value of undefined.`);
          continue;
        }
        const currentValue = this[key];
        if (currentValue === void 0) {
          console.warn(`THREE.Material: '${key}' is not a property of THREE.${this.type}.`);
          continue;
        }
        if (currentValue && currentValue.isColor) {
          currentValue.set(newValue);
        } else if (currentValue && currentValue.isVector3 && (newValue && newValue.isVector3)) {
          currentValue.copy(newValue);
        } else {
          this[key] = newValue;
        }
      }
    }
    toJSON(meta) {
      const isRootObject = meta === void 0 || typeof meta === "string";
      if (isRootObject) {
        meta = {
          textures: {},
          images: {}
        };
      }
      const data = {
        metadata: {
          version: 4.6,
          type: "Material",
          generator: "Material.toJSON"
        }
      };
      data.uuid = this.uuid;
      data.type = this.type;
      if (this.name !== "") data.name = this.name;
      if (this.color && this.color.isColor) data.color = this.color.getHex();
      if (this.roughness !== void 0) data.roughness = this.roughness;
      if (this.metalness !== void 0) data.metalness = this.metalness;
      if (this.sheen !== void 0) data.sheen = this.sheen;
      if (this.sheenColor && this.sheenColor.isColor) data.sheenColor = this.sheenColor.getHex();
      if (this.sheenRoughness !== void 0) data.sheenRoughness = this.sheenRoughness;
      if (this.emissive && this.emissive.isColor) data.emissive = this.emissive.getHex();
      if (this.emissiveIntensity && this.emissiveIntensity !== 1) data.emissiveIntensity = this.emissiveIntensity;
      if (this.specular && this.specular.isColor) data.specular = this.specular.getHex();
      if (this.specularIntensity !== void 0) data.specularIntensity = this.specularIntensity;
      if (this.specularColor && this.specularColor.isColor) data.specularColor = this.specularColor.getHex();
      if (this.shininess !== void 0) data.shininess = this.shininess;
      if (this.clearcoat !== void 0) data.clearcoat = this.clearcoat;
      if (this.clearcoatRoughness !== void 0) data.clearcoatRoughness = this.clearcoatRoughness;
      if (this.clearcoatMap && this.clearcoatMap.isTexture) {
        data.clearcoatMap = this.clearcoatMap.toJSON(meta).uuid;
      }
      if (this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture) {
        data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON(meta).uuid;
      }
      if (this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture) {
        data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON(meta).uuid;
        data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();
      }
      if (this.iridescence !== void 0) data.iridescence = this.iridescence;
      if (this.iridescenceIOR !== void 0) data.iridescenceIOR = this.iridescenceIOR;
      if (this.iridescenceThicknessRange !== void 0) data.iridescenceThicknessRange = this.iridescenceThicknessRange;
      if (this.iridescenceMap && this.iridescenceMap.isTexture) {
        data.iridescenceMap = this.iridescenceMap.toJSON(meta).uuid;
      }
      if (this.iridescenceThicknessMap && this.iridescenceThicknessMap.isTexture) {
        data.iridescenceThicknessMap = this.iridescenceThicknessMap.toJSON(meta).uuid;
      }
      if (this.anisotropy !== void 0) data.anisotropy = this.anisotropy;
      if (this.anisotropyRotation !== void 0) data.anisotropyRotation = this.anisotropyRotation;
      if (this.anisotropyMap && this.anisotropyMap.isTexture) {
        data.anisotropyMap = this.anisotropyMap.toJSON(meta).uuid;
      }
      if (this.map && this.map.isTexture) data.map = this.map.toJSON(meta).uuid;
      if (this.matcap && this.matcap.isTexture) data.matcap = this.matcap.toJSON(meta).uuid;
      if (this.alphaMap && this.alphaMap.isTexture) data.alphaMap = this.alphaMap.toJSON(meta).uuid;
      if (this.lightMap && this.lightMap.isTexture) {
        data.lightMap = this.lightMap.toJSON(meta).uuid;
        data.lightMapIntensity = this.lightMapIntensity;
      }
      if (this.aoMap && this.aoMap.isTexture) {
        data.aoMap = this.aoMap.toJSON(meta).uuid;
        data.aoMapIntensity = this.aoMapIntensity;
      }
      if (this.bumpMap && this.bumpMap.isTexture) {
        data.bumpMap = this.bumpMap.toJSON(meta).uuid;
        data.bumpScale = this.bumpScale;
      }
      if (this.normalMap && this.normalMap.isTexture) {
        data.normalMap = this.normalMap.toJSON(meta).uuid;
        data.normalMapType = this.normalMapType;
        data.normalScale = this.normalScale.toArray();
      }
      if (this.displacementMap && this.displacementMap.isTexture) {
        data.displacementMap = this.displacementMap.toJSON(meta).uuid;
        data.displacementScale = this.displacementScale;
        data.displacementBias = this.displacementBias;
      }
      if (this.roughnessMap && this.roughnessMap.isTexture) data.roughnessMap = this.roughnessMap.toJSON(meta).uuid;
      if (this.metalnessMap && this.metalnessMap.isTexture) data.metalnessMap = this.metalnessMap.toJSON(meta).uuid;
      if (this.emissiveMap && this.emissiveMap.isTexture) data.emissiveMap = this.emissiveMap.toJSON(meta).uuid;
      if (this.specularMap && this.specularMap.isTexture) data.specularMap = this.specularMap.toJSON(meta).uuid;
      if (this.specularIntensityMap && this.specularIntensityMap.isTexture) data.specularIntensityMap = this.specularIntensityMap.toJSON(meta).uuid;
      if (this.specularColorMap && this.specularColorMap.isTexture) data.specularColorMap = this.specularColorMap.toJSON(meta).uuid;
      if (this.envMap && this.envMap.isTexture) {
        data.envMap = this.envMap.toJSON(meta).uuid;
        if (this.combine !== void 0) data.combine = this.combine;
      }
      if (this.envMapIntensity !== void 0) data.envMapIntensity = this.envMapIntensity;
      if (this.reflectivity !== void 0) data.reflectivity = this.reflectivity;
      if (this.refractionRatio !== void 0) data.refractionRatio = this.refractionRatio;
      if (this.gradientMap && this.gradientMap.isTexture) {
        data.gradientMap = this.gradientMap.toJSON(meta).uuid;
      }
      if (this.transmission !== void 0) data.transmission = this.transmission;
      if (this.transmissionMap && this.transmissionMap.isTexture) data.transmissionMap = this.transmissionMap.toJSON(meta).uuid;
      if (this.thickness !== void 0) data.thickness = this.thickness;
      if (this.thicknessMap && this.thicknessMap.isTexture) data.thicknessMap = this.thicknessMap.toJSON(meta).uuid;
      if (this.attenuationDistance !== void 0 && this.attenuationDistance !== Infinity) data.attenuationDistance = this.attenuationDistance;
      if (this.attenuationColor !== void 0) data.attenuationColor = this.attenuationColor.getHex();
      if (this.size !== void 0) data.size = this.size;
      if (this.shadowSide !== null) data.shadowSide = this.shadowSide;
      if (this.sizeAttenuation !== void 0) data.sizeAttenuation = this.sizeAttenuation;
      if (this.blending !== NormalBlending) data.blending = this.blending;
      if (this.side !== FrontSide) data.side = this.side;
      if (this.vertexColors === true) data.vertexColors = true;
      if (this.opacity < 1) data.opacity = this.opacity;
      if (this.transparent === true) data.transparent = true;
      if (this.blendSrc !== SrcAlphaFactor) data.blendSrc = this.blendSrc;
      if (this.blendDst !== OneMinusSrcAlphaFactor) data.blendDst = this.blendDst;
      if (this.blendEquation !== AddEquation) data.blendEquation = this.blendEquation;
      if (this.blendSrcAlpha !== null) data.blendSrcAlpha = this.blendSrcAlpha;
      if (this.blendDstAlpha !== null) data.blendDstAlpha = this.blendDstAlpha;
      if (this.blendEquationAlpha !== null) data.blendEquationAlpha = this.blendEquationAlpha;
      if (this.blendColor && this.blendColor.isColor) data.blendColor = this.blendColor.getHex();
      if (this.blendAlpha !== 0) data.blendAlpha = this.blendAlpha;
      if (this.depthFunc !== LessEqualDepth) data.depthFunc = this.depthFunc;
      if (this.depthTest === false) data.depthTest = this.depthTest;
      if (this.depthWrite === false) data.depthWrite = this.depthWrite;
      if (this.colorWrite === false) data.colorWrite = this.colorWrite;
      if (this.stencilWriteMask !== 255) data.stencilWriteMask = this.stencilWriteMask;
      if (this.stencilFunc !== AlwaysStencilFunc) data.stencilFunc = this.stencilFunc;
      if (this.stencilRef !== 0) data.stencilRef = this.stencilRef;
      if (this.stencilFuncMask !== 255) data.stencilFuncMask = this.stencilFuncMask;
      if (this.stencilFail !== KeepStencilOp) data.stencilFail = this.stencilFail;
      if (this.stencilZFail !== KeepStencilOp) data.stencilZFail = this.stencilZFail;
      if (this.stencilZPass !== KeepStencilOp) data.stencilZPass = this.stencilZPass;
      if (this.stencilWrite === true) data.stencilWrite = this.stencilWrite;
      if (this.rotation !== void 0 && this.rotation !== 0) data.rotation = this.rotation;
      if (this.polygonOffset === true) data.polygonOffset = true;
      if (this.polygonOffsetFactor !== 0) data.polygonOffsetFactor = this.polygonOffsetFactor;
      if (this.polygonOffsetUnits !== 0) data.polygonOffsetUnits = this.polygonOffsetUnits;
      if (this.linewidth !== void 0 && this.linewidth !== 1) data.linewidth = this.linewidth;
      if (this.dashSize !== void 0) data.dashSize = this.dashSize;
      if (this.gapSize !== void 0) data.gapSize = this.gapSize;
      if (this.scale !== void 0) data.scale = this.scale;
      if (this.dithering === true) data.dithering = true;
      if (this.alphaTest > 0) data.alphaTest = this.alphaTest;
      if (this.alphaHash === true) data.alphaHash = true;
      if (this.alphaToCoverage === true) data.alphaToCoverage = true;
      if (this.premultipliedAlpha === true) data.premultipliedAlpha = true;
      if (this.forceSinglePass === true) data.forceSinglePass = true;
      if (this.wireframe === true) data.wireframe = true;
      if (this.wireframeLinewidth > 1) data.wireframeLinewidth = this.wireframeLinewidth;
      if (this.wireframeLinecap !== "round") data.wireframeLinecap = this.wireframeLinecap;
      if (this.wireframeLinejoin !== "round") data.wireframeLinejoin = this.wireframeLinejoin;
      if (this.flatShading === true) data.flatShading = true;
      if (this.visible === false) data.visible = false;
      if (this.toneMapped === false) data.toneMapped = false;
      if (this.fog === false) data.fog = false;
      if (Object.keys(this.userData).length > 0) data.userData = this.userData;
      function extractFromCache(cache) {
        const values = [];
        for (const key in cache) {
          const data2 = cache[key];
          delete data2.metadata;
          values.push(data2);
        }
        return values;
      }
      if (isRootObject) {
        const textures = extractFromCache(meta.textures);
        const images = extractFromCache(meta.images);
        if (textures.length > 0) data.textures = textures;
        if (images.length > 0) data.images = images;
      }
      return data;
    }
    clone() {
      return new this.constructor().copy(this);
    }
    copy(source) {
      this.name = source.name;
      this.blending = source.blending;
      this.side = source.side;
      this.vertexColors = source.vertexColors;
      this.opacity = source.opacity;
      this.transparent = source.transparent;
      this.blendSrc = source.blendSrc;
      this.blendDst = source.blendDst;
      this.blendEquation = source.blendEquation;
      this.blendSrcAlpha = source.blendSrcAlpha;
      this.blendDstAlpha = source.blendDstAlpha;
      this.blendEquationAlpha = source.blendEquationAlpha;
      this.blendColor.copy(source.blendColor);
      this.blendAlpha = source.blendAlpha;
      this.depthFunc = source.depthFunc;
      this.depthTest = source.depthTest;
      this.depthWrite = source.depthWrite;
      this.stencilWriteMask = source.stencilWriteMask;
      this.stencilFunc = source.stencilFunc;
      this.stencilRef = source.stencilRef;
      this.stencilFuncMask = source.stencilFuncMask;
      this.stencilFail = source.stencilFail;
      this.stencilZFail = source.stencilZFail;
      this.stencilZPass = source.stencilZPass;
      this.stencilWrite = source.stencilWrite;
      const srcPlanes = source.clippingPlanes;
      let dstPlanes = null;
      if (srcPlanes !== null) {
        const n = srcPlanes.length;
        dstPlanes = new Array(n);
        for (let i = 0; i !== n; ++i) {
          dstPlanes[i] = srcPlanes[i].clone();
        }
      }
      this.clippingPlanes = dstPlanes;
      this.clipIntersection = source.clipIntersection;
      this.clipShadows = source.clipShadows;
      this.shadowSide = source.shadowSide;
      this.colorWrite = source.colorWrite;
      this.precision = source.precision;
      this.polygonOffset = source.polygonOffset;
      this.polygonOffsetFactor = source.polygonOffsetFactor;
      this.polygonOffsetUnits = source.polygonOffsetUnits;
      this.dithering = source.dithering;
      this.alphaTest = source.alphaTest;
      this.alphaHash = source.alphaHash;
      this.alphaToCoverage = source.alphaToCoverage;
      this.premultipliedAlpha = source.premultipliedAlpha;
      this.forceSinglePass = source.forceSinglePass;
      this.visible = source.visible;
      this.toneMapped = source.toneMapped;
      this.userData = JSON.parse(JSON.stringify(source.userData));
      return this;
    }
    dispose() {
      this.dispatchEvent({ type: "dispose" });
    }
    set needsUpdate(value) {
      if (value === true) this.version++;
    }
  };
  var MeshBasicMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isMeshBasicMaterial = true;
      this.type = "MeshBasicMaterial";
      this.color = new Color(16777215);
      this.map = null;
      this.lightMap = null;
      this.lightMapIntensity = 1;
      this.aoMap = null;
      this.aoMapIntensity = 1;
      this.specularMap = null;
      this.alphaMap = null;
      this.envMap = null;
      this.combine = MultiplyOperation;
      this.reflectivity = 1;
      this.refractionRatio = 0.98;
      this.wireframe = false;
      this.wireframeLinewidth = 1;
      this.wireframeLinecap = "round";
      this.wireframeLinejoin = "round";
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.color.copy(source.color);
      this.map = source.map;
      this.lightMap = source.lightMap;
      this.lightMapIntensity = source.lightMapIntensity;
      this.aoMap = source.aoMap;
      this.aoMapIntensity = source.aoMapIntensity;
      this.specularMap = source.specularMap;
      this.alphaMap = source.alphaMap;
      this.envMap = source.envMap;
      this.combine = source.combine;
      this.reflectivity = source.reflectivity;
      this.refractionRatio = source.refractionRatio;
      this.wireframe = source.wireframe;
      this.wireframeLinewidth = source.wireframeLinewidth;
      this.wireframeLinecap = source.wireframeLinecap;
      this.wireframeLinejoin = source.wireframeLinejoin;
      this.fog = source.fog;
      return this;
    }
  };
  var _tables = /* @__PURE__ */ _generateTables();
  function _generateTables() {
    const buffer = new ArrayBuffer(4);
    const floatView = new Float32Array(buffer);
    const uint32View = new Uint32Array(buffer);
    const baseTable = new Uint32Array(512);
    const shiftTable = new Uint32Array(512);
    for (let i = 0; i < 256; ++i) {
      const e = i - 127;
      if (e < -27) {
        baseTable[i] = 0;
        baseTable[i | 256] = 32768;
        shiftTable[i] = 24;
        shiftTable[i | 256] = 24;
      } else if (e < -14) {
        baseTable[i] = 1024 >> -e - 14;
        baseTable[i | 256] = 1024 >> -e - 14 | 32768;
        shiftTable[i] = -e - 1;
        shiftTable[i | 256] = -e - 1;
      } else if (e <= 15) {
        baseTable[i] = e + 15 << 10;
        baseTable[i | 256] = e + 15 << 10 | 32768;
        shiftTable[i] = 13;
        shiftTable[i | 256] = 13;
      } else if (e < 128) {
        baseTable[i] = 31744;
        baseTable[i | 256] = 64512;
        shiftTable[i] = 24;
        shiftTable[i | 256] = 24;
      } else {
        baseTable[i] = 31744;
        baseTable[i | 256] = 64512;
        shiftTable[i] = 13;
        shiftTable[i | 256] = 13;
      }
    }
    const mantissaTable = new Uint32Array(2048);
    const exponentTable = new Uint32Array(64);
    const offsetTable = new Uint32Array(64);
    for (let i = 1; i < 1024; ++i) {
      let m = i << 13;
      let e = 0;
      while ((m & 8388608) === 0) {
        m <<= 1;
        e -= 8388608;
      }
      m &= ~8388608;
      e += 947912704;
      mantissaTable[i] = m | e;
    }
    for (let i = 1024; i < 2048; ++i) {
      mantissaTable[i] = 939524096 + (i - 1024 << 13);
    }
    for (let i = 1; i < 31; ++i) {
      exponentTable[i] = i << 23;
    }
    exponentTable[31] = 1199570944;
    exponentTable[32] = 2147483648;
    for (let i = 33; i < 63; ++i) {
      exponentTable[i] = 2147483648 + (i - 32 << 23);
    }
    exponentTable[63] = 3347054592;
    for (let i = 1; i < 64; ++i) {
      if (i !== 32) {
        offsetTable[i] = 1024;
      }
    }
    return {
      floatView,
      uint32View,
      baseTable,
      shiftTable,
      mantissaTable,
      exponentTable,
      offsetTable
    };
  }
  function toHalfFloat(val) {
    if (Math.abs(val) > 65504) console.warn("THREE.DataUtils.toHalfFloat(): Value out of range.");
    val = clamp(val, -65504, 65504);
    _tables.floatView[0] = val;
    const f = _tables.uint32View[0];
    const e = f >> 23 & 511;
    return _tables.baseTable[e] + ((f & 8388607) >> _tables.shiftTable[e]);
  }
  function fromHalfFloat(val) {
    const m = val >> 10;
    _tables.uint32View[0] = _tables.mantissaTable[_tables.offsetTable[m] + (val & 1023)] + _tables.exponentTable[m];
    return _tables.floatView[0];
  }
  var DataUtils = {
    toHalfFloat,
    fromHalfFloat
  };
  var _vector$9 = /* @__PURE__ */ new Vector3();
  var _vector2$1 = /* @__PURE__ */ new Vector2();
  var BufferAttribute = class {
    constructor(array, itemSize, normalized = false) {
      if (Array.isArray(array)) {
        throw new TypeError("THREE.BufferAttribute: array should be a Typed Array.");
      }
      this.isBufferAttribute = true;
      this.name = "";
      this.array = array;
      this.itemSize = itemSize;
      this.count = array !== void 0 ? array.length / itemSize : 0;
      this.normalized = normalized;
      this.usage = StaticDrawUsage;
      this._updateRange = { offset: 0, count: -1 };
      this.updateRanges = [];
      this.gpuType = FloatType;
      this.version = 0;
    }
    onUploadCallback() {
    }
    set needsUpdate(value) {
      if (value === true) this.version++;
    }
    get updateRange() {
      console.warn("THREE.BufferAttribute: updateRange() is deprecated and will be removed in r169. Use addUpdateRange() instead.");
      return this._updateRange;
    }
    setUsage(value) {
      this.usage = value;
      return this;
    }
    addUpdateRange(start, count) {
      this.updateRanges.push({ start, count });
    }
    clearUpdateRanges() {
      this.updateRanges.length = 0;
    }
    copy(source) {
      this.name = source.name;
      this.array = new source.array.constructor(source.array);
      this.itemSize = source.itemSize;
      this.count = source.count;
      this.normalized = source.normalized;
      this.usage = source.usage;
      this.gpuType = source.gpuType;
      return this;
    }
    copyAt(index1, attribute, index2) {
      index1 *= this.itemSize;
      index2 *= attribute.itemSize;
      for (let i = 0, l = this.itemSize; i < l; i++) {
        this.array[index1 + i] = attribute.array[index2 + i];
      }
      return this;
    }
    copyArray(array) {
      this.array.set(array);
      return this;
    }
    applyMatrix3(m) {
      if (this.itemSize === 2) {
        for (let i = 0, l = this.count; i < l; i++) {
          _vector2$1.fromBufferAttribute(this, i);
          _vector2$1.applyMatrix3(m);
          this.setXY(i, _vector2$1.x, _vector2$1.y);
        }
      } else if (this.itemSize === 3) {
        for (let i = 0, l = this.count; i < l; i++) {
          _vector$9.fromBufferAttribute(this, i);
          _vector$9.applyMatrix3(m);
          this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
        }
      }
      return this;
    }
    applyMatrix4(m) {
      for (let i = 0, l = this.count; i < l; i++) {
        _vector$9.fromBufferAttribute(this, i);
        _vector$9.applyMatrix4(m);
        this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
      }
      return this;
    }
    applyNormalMatrix(m) {
      for (let i = 0, l = this.count; i < l; i++) {
        _vector$9.fromBufferAttribute(this, i);
        _vector$9.applyNormalMatrix(m);
        this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
      }
      return this;
    }
    transformDirection(m) {
      for (let i = 0, l = this.count; i < l; i++) {
        _vector$9.fromBufferAttribute(this, i);
        _vector$9.transformDirection(m);
        this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
      }
      return this;
    }
    set(value, offset = 0) {
      this.array.set(value, offset);
      return this;
    }
    getComponent(index, component) {
      let value = this.array[index * this.itemSize + component];
      if (this.normalized) value = denormalize(value, this.array);
      return value;
    }
    setComponent(index, component, value) {
      if (this.normalized) value = normalize(value, this.array);
      this.array[index * this.itemSize + component] = value;
      return this;
    }
    getX(index) {
      let x = this.array[index * this.itemSize];
      if (this.normalized) x = denormalize(x, this.array);
      return x;
    }
    setX(index, x) {
      if (this.normalized) x = normalize(x, this.array);
      this.array[index * this.itemSize] = x;
      return this;
    }
    getY(index) {
      let y = this.array[index * this.itemSize + 1];
      if (this.normalized) y = denormalize(y, this.array);
      return y;
    }
    setY(index, y) {
      if (this.normalized) y = normalize(y, this.array);
      this.array[index * this.itemSize + 1] = y;
      return this;
    }
    getZ(index) {
      let z = this.array[index * this.itemSize + 2];
      if (this.normalized) z = denormalize(z, this.array);
      return z;
    }
    setZ(index, z) {
      if (this.normalized) z = normalize(z, this.array);
      this.array[index * this.itemSize + 2] = z;
      return this;
    }
    getW(index) {
      let w = this.array[index * this.itemSize + 3];
      if (this.normalized) w = denormalize(w, this.array);
      return w;
    }
    setW(index, w) {
      if (this.normalized) w = normalize(w, this.array);
      this.array[index * this.itemSize + 3] = w;
      return this;
    }
    setXY(index, x, y) {
      index *= this.itemSize;
      if (this.normalized) {
        x = normalize(x, this.array);
        y = normalize(y, this.array);
      }
      this.array[index + 0] = x;
      this.array[index + 1] = y;
      return this;
    }
    setXYZ(index, x, y, z) {
      index *= this.itemSize;
      if (this.normalized) {
        x = normalize(x, this.array);
        y = normalize(y, this.array);
        z = normalize(z, this.array);
      }
      this.array[index + 0] = x;
      this.array[index + 1] = y;
      this.array[index + 2] = z;
      return this;
    }
    setXYZW(index, x, y, z, w) {
      index *= this.itemSize;
      if (this.normalized) {
        x = normalize(x, this.array);
        y = normalize(y, this.array);
        z = normalize(z, this.array);
        w = normalize(w, this.array);
      }
      this.array[index + 0] = x;
      this.array[index + 1] = y;
      this.array[index + 2] = z;
      this.array[index + 3] = w;
      return this;
    }
    onUpload(callback) {
      this.onUploadCallback = callback;
      return this;
    }
    clone() {
      return new this.constructor(this.array, this.itemSize).copy(this);
    }
    toJSON() {
      const data = {
        itemSize: this.itemSize,
        type: this.array.constructor.name,
        array: Array.from(this.array),
        normalized: this.normalized
      };
      if (this.name !== "") data.name = this.name;
      if (this.usage !== StaticDrawUsage) data.usage = this.usage;
      return data;
    }
  };
  var Int8BufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Int8Array(array), itemSize, normalized);
    }
  };
  var Uint8BufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Uint8Array(array), itemSize, normalized);
    }
  };
  var Uint8ClampedBufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Uint8ClampedArray(array), itemSize, normalized);
    }
  };
  var Int16BufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Int16Array(array), itemSize, normalized);
    }
  };
  var Uint16BufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Uint16Array(array), itemSize, normalized);
    }
  };
  var Int32BufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Int32Array(array), itemSize, normalized);
    }
  };
  var Uint32BufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Uint32Array(array), itemSize, normalized);
    }
  };
  var Float16BufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Uint16Array(array), itemSize, normalized);
      this.isFloat16BufferAttribute = true;
    }
    getX(index) {
      let x = fromHalfFloat(this.array[index * this.itemSize]);
      if (this.normalized) x = denormalize(x, this.array);
      return x;
    }
    setX(index, x) {
      if (this.normalized) x = normalize(x, this.array);
      this.array[index * this.itemSize] = toHalfFloat(x);
      return this;
    }
    getY(index) {
      let y = fromHalfFloat(this.array[index * this.itemSize + 1]);
      if (this.normalized) y = denormalize(y, this.array);
      return y;
    }
    setY(index, y) {
      if (this.normalized) y = normalize(y, this.array);
      this.array[index * this.itemSize + 1] = toHalfFloat(y);
      return this;
    }
    getZ(index) {
      let z = fromHalfFloat(this.array[index * this.itemSize + 2]);
      if (this.normalized) z = denormalize(z, this.array);
      return z;
    }
    setZ(index, z) {
      if (this.normalized) z = normalize(z, this.array);
      this.array[index * this.itemSize + 2] = toHalfFloat(z);
      return this;
    }
    getW(index) {
      let w = fromHalfFloat(this.array[index * this.itemSize + 3]);
      if (this.normalized) w = denormalize(w, this.array);
      return w;
    }
    setW(index, w) {
      if (this.normalized) w = normalize(w, this.array);
      this.array[index * this.itemSize + 3] = toHalfFloat(w);
      return this;
    }
    setXY(index, x, y) {
      index *= this.itemSize;
      if (this.normalized) {
        x = normalize(x, this.array);
        y = normalize(y, this.array);
      }
      this.array[index + 0] = toHalfFloat(x);
      this.array[index + 1] = toHalfFloat(y);
      return this;
    }
    setXYZ(index, x, y, z) {
      index *= this.itemSize;
      if (this.normalized) {
        x = normalize(x, this.array);
        y = normalize(y, this.array);
        z = normalize(z, this.array);
      }
      this.array[index + 0] = toHalfFloat(x);
      this.array[index + 1] = toHalfFloat(y);
      this.array[index + 2] = toHalfFloat(z);
      return this;
    }
    setXYZW(index, x, y, z, w) {
      index *= this.itemSize;
      if (this.normalized) {
        x = normalize(x, this.array);
        y = normalize(y, this.array);
        z = normalize(z, this.array);
        w = normalize(w, this.array);
      }
      this.array[index + 0] = toHalfFloat(x);
      this.array[index + 1] = toHalfFloat(y);
      this.array[index + 2] = toHalfFloat(z);
      this.array[index + 3] = toHalfFloat(w);
      return this;
    }
  };
  var Float32BufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Float32Array(array), itemSize, normalized);
    }
  };
  var Float64BufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized) {
      super(new Float64Array(array), itemSize, normalized);
    }
  };
  var _id$2 = 0;
  var _m1 = /* @__PURE__ */ new Matrix4();
  var _obj = /* @__PURE__ */ new Object3D();
  var _offset = /* @__PURE__ */ new Vector3();
  var _box$2 = /* @__PURE__ */ new Box3();
  var _boxMorphTargets = /* @__PURE__ */ new Box3();
  var _vector$8 = /* @__PURE__ */ new Vector3();
  var BufferGeometry = class _BufferGeometry extends EventDispatcher {
    constructor() {
      super();
      this.isBufferGeometry = true;
      Object.defineProperty(this, "id", { value: _id$2++ });
      this.uuid = generateUUID();
      this.name = "";
      this.type = "BufferGeometry";
      this.index = null;
      this.attributes = {};
      this.morphAttributes = {};
      this.morphTargetsRelative = false;
      this.groups = [];
      this.boundingBox = null;
      this.boundingSphere = null;
      this.drawRange = { start: 0, count: Infinity };
      this.userData = {};
    }
    getIndex() {
      return this.index;
    }
    setIndex(index) {
      if (Array.isArray(index)) {
        this.index = new (arrayNeedsUint32(index) ? Uint32BufferAttribute : Uint16BufferAttribute)(index, 1);
      } else {
        this.index = index;
      }
      return this;
    }
    getAttribute(name) {
      return this.attributes[name];
    }
    setAttribute(name, attribute) {
      this.attributes[name] = attribute;
      return this;
    }
    deleteAttribute(name) {
      delete this.attributes[name];
      return this;
    }
    hasAttribute(name) {
      return this.attributes[name] !== void 0;
    }
    addGroup(start, count, materialIndex = 0) {
      this.groups.push({
        start,
        count,
        materialIndex
      });
    }
    clearGroups() {
      this.groups = [];
    }
    setDrawRange(start, count) {
      this.drawRange.start = start;
      this.drawRange.count = count;
    }
    applyMatrix4(matrix) {
      const position = this.attributes.position;
      if (position !== void 0) {
        position.applyMatrix4(matrix);
        position.needsUpdate = true;
      }
      const normal = this.attributes.normal;
      if (normal !== void 0) {
        const normalMatrix = new Matrix3().getNormalMatrix(matrix);
        normal.applyNormalMatrix(normalMatrix);
        normal.needsUpdate = true;
      }
      const tangent = this.attributes.tangent;
      if (tangent !== void 0) {
        tangent.transformDirection(matrix);
        tangent.needsUpdate = true;
      }
      if (this.boundingBox !== null) {
        this.computeBoundingBox();
      }
      if (this.boundingSphere !== null) {
        this.computeBoundingSphere();
      }
      return this;
    }
    applyQuaternion(q) {
      _m1.makeRotationFromQuaternion(q);
      this.applyMatrix4(_m1);
      return this;
    }
    rotateX(angle) {
      _m1.makeRotationX(angle);
      this.applyMatrix4(_m1);
      return this;
    }
    rotateY(angle) {
      _m1.makeRotationY(angle);
      this.applyMatrix4(_m1);
      return this;
    }
    rotateZ(angle) {
      _m1.makeRotationZ(angle);
      this.applyMatrix4(_m1);
      return this;
    }
    translate(x, y, z) {
      _m1.makeTranslation(x, y, z);
      this.applyMatrix4(_m1);
      return this;
    }
    scale(x, y, z) {
      _m1.makeScale(x, y, z);
      this.applyMatrix4(_m1);
      return this;
    }
    lookAt(vector) {
      _obj.lookAt(vector);
      _obj.updateMatrix();
      this.applyMatrix4(_obj.matrix);
      return this;
    }
    center() {
      this.computeBoundingBox();
      this.boundingBox.getCenter(_offset).negate();
      this.translate(_offset.x, _offset.y, _offset.z);
      return this;
    }
    setFromPoints(points) {
      const position = [];
      for (let i = 0, l = points.length; i < l; i++) {
        const point = points[i];
        position.push(point.x, point.y, point.z || 0);
      }
      this.setAttribute("position", new Float32BufferAttribute(position, 3));
      return this;
    }
    computeBoundingBox() {
      if (this.boundingBox === null) {
        this.boundingBox = new Box3();
      }
      const position = this.attributes.position;
      const morphAttributesPosition = this.morphAttributes.position;
      if (position && position.isGLBufferAttribute) {
        console.error('THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".', this);
        this.boundingBox.set(
          new Vector3(-Infinity, -Infinity, -Infinity),
          new Vector3(Infinity, Infinity, Infinity)
        );
        return;
      }
      if (position !== void 0) {
        this.boundingBox.setFromBufferAttribute(position);
        if (morphAttributesPosition) {
          for (let i = 0, il = morphAttributesPosition.length; i < il; i++) {
            const morphAttribute = morphAttributesPosition[i];
            _box$2.setFromBufferAttribute(morphAttribute);
            if (this.morphTargetsRelative) {
              _vector$8.addVectors(this.boundingBox.min, _box$2.min);
              this.boundingBox.expandByPoint(_vector$8);
              _vector$8.addVectors(this.boundingBox.max, _box$2.max);
              this.boundingBox.expandByPoint(_vector$8);
            } else {
              this.boundingBox.expandByPoint(_box$2.min);
              this.boundingBox.expandByPoint(_box$2.max);
            }
          }
        }
      } else {
        this.boundingBox.makeEmpty();
      }
      if (isNaN(this.boundingBox.min.x) || isNaN(this.boundingBox.min.y) || isNaN(this.boundingBox.min.z)) {
        console.error('THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this);
      }
    }
    computeBoundingSphere() {
      if (this.boundingSphere === null) {
        this.boundingSphere = new Sphere();
      }
      const position = this.attributes.position;
      const morphAttributesPosition = this.morphAttributes.position;
      if (position && position.isGLBufferAttribute) {
        console.error('THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".', this);
        this.boundingSphere.set(new Vector3(), Infinity);
        return;
      }
      if (position) {
        const center = this.boundingSphere.center;
        _box$2.setFromBufferAttribute(position);
        if (morphAttributesPosition) {
          for (let i = 0, il = morphAttributesPosition.length; i < il; i++) {
            const morphAttribute = morphAttributesPosition[i];
            _boxMorphTargets.setFromBufferAttribute(morphAttribute);
            if (this.morphTargetsRelative) {
              _vector$8.addVectors(_box$2.min, _boxMorphTargets.min);
              _box$2.expandByPoint(_vector$8);
              _vector$8.addVectors(_box$2.max, _boxMorphTargets.max);
              _box$2.expandByPoint(_vector$8);
            } else {
              _box$2.expandByPoint(_boxMorphTargets.min);
              _box$2.expandByPoint(_boxMorphTargets.max);
            }
          }
        }
        _box$2.getCenter(center);
        let maxRadiusSq = 0;
        for (let i = 0, il = position.count; i < il; i++) {
          _vector$8.fromBufferAttribute(position, i);
          maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(_vector$8));
        }
        if (morphAttributesPosition) {
          for (let i = 0, il = morphAttributesPosition.length; i < il; i++) {
            const morphAttribute = morphAttributesPosition[i];
            const morphTargetsRelative = this.morphTargetsRelative;
            for (let j = 0, jl = morphAttribute.count; j < jl; j++) {
              _vector$8.fromBufferAttribute(morphAttribute, j);
              if (morphTargetsRelative) {
                _offset.fromBufferAttribute(position, j);
                _vector$8.add(_offset);
              }
              maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(_vector$8));
            }
          }
        }
        this.boundingSphere.radius = Math.sqrt(maxRadiusSq);
        if (isNaN(this.boundingSphere.radius)) {
          console.error('THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this);
        }
      }
    }
    computeTangents() {
      const index = this.index;
      const attributes = this.attributes;
      if (index === null || attributes.position === void 0 || attributes.normal === void 0 || attributes.uv === void 0) {
        console.error("THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)");
        return;
      }
      const indices = index.array;
      const positions = attributes.position.array;
      const normals = attributes.normal.array;
      const uvs = attributes.uv.array;
      const nVertices = positions.length / 3;
      if (this.hasAttribute("tangent") === false) {
        this.setAttribute("tangent", new BufferAttribute(new Float32Array(4 * nVertices), 4));
      }
      const tangents = this.getAttribute("tangent").array;
      const tan1 = [], tan2 = [];
      for (let i = 0; i < nVertices; i++) {
        tan1[i] = new Vector3();
        tan2[i] = new Vector3();
      }
      const vA = new Vector3(), vB = new Vector3(), vC = new Vector3(), uvA = new Vector2(), uvB = new Vector2(), uvC = new Vector2(), sdir = new Vector3(), tdir = new Vector3();
      function handleTriangle(a, b, c) {
        vA.fromArray(positions, a * 3);
        vB.fromArray(positions, b * 3);
        vC.fromArray(positions, c * 3);
        uvA.fromArray(uvs, a * 2);
        uvB.fromArray(uvs, b * 2);
        uvC.fromArray(uvs, c * 2);
        vB.sub(vA);
        vC.sub(vA);
        uvB.sub(uvA);
        uvC.sub(uvA);
        const r = 1 / (uvB.x * uvC.y - uvC.x * uvB.y);
        if (!isFinite(r)) return;
        sdir.copy(vB).multiplyScalar(uvC.y).addScaledVector(vC, -uvB.y).multiplyScalar(r);
        tdir.copy(vC).multiplyScalar(uvB.x).addScaledVector(vB, -uvC.x).multiplyScalar(r);
        tan1[a].add(sdir);
        tan1[b].add(sdir);
        tan1[c].add(sdir);
        tan2[a].add(tdir);
        tan2[b].add(tdir);
        tan2[c].add(tdir);
      }
      let groups = this.groups;
      if (groups.length === 0) {
        groups = [{
          start: 0,
          count: indices.length
        }];
      }
      for (let i = 0, il = groups.length; i < il; ++i) {
        const group = groups[i];
        const start = group.start;
        const count = group.count;
        for (let j = start, jl = start + count; j < jl; j += 3) {
          handleTriangle(
            indices[j + 0],
            indices[j + 1],
            indices[j + 2]
          );
        }
      }
      const tmp2 = new Vector3(), tmp22 = new Vector3();
      const n = new Vector3(), n2 = new Vector3();
      function handleVertex(v) {
        n.fromArray(normals, v * 3);
        n2.copy(n);
        const t = tan1[v];
        tmp2.copy(t);
        tmp2.sub(n.multiplyScalar(n.dot(t))).normalize();
        tmp22.crossVectors(n2, t);
        const test = tmp22.dot(tan2[v]);
        const w = test < 0 ? -1 : 1;
        tangents[v * 4] = tmp2.x;
        tangents[v * 4 + 1] = tmp2.y;
        tangents[v * 4 + 2] = tmp2.z;
        tangents[v * 4 + 3] = w;
      }
      for (let i = 0, il = groups.length; i < il; ++i) {
        const group = groups[i];
        const start = group.start;
        const count = group.count;
        for (let j = start, jl = start + count; j < jl; j += 3) {
          handleVertex(indices[j + 0]);
          handleVertex(indices[j + 1]);
          handleVertex(indices[j + 2]);
        }
      }
    }
    computeVertexNormals() {
      const index = this.index;
      const positionAttribute = this.getAttribute("position");
      if (positionAttribute !== void 0) {
        let normalAttribute = this.getAttribute("normal");
        if (normalAttribute === void 0) {
          normalAttribute = new BufferAttribute(new Float32Array(positionAttribute.count * 3), 3);
          this.setAttribute("normal", normalAttribute);
        } else {
          for (let i = 0, il = normalAttribute.count; i < il; i++) {
            normalAttribute.setXYZ(i, 0, 0, 0);
          }
        }
        const pA = new Vector3(), pB = new Vector3(), pC = new Vector3();
        const nA = new Vector3(), nB = new Vector3(), nC = new Vector3();
        const cb = new Vector3(), ab = new Vector3();
        if (index) {
          for (let i = 0, il = index.count; i < il; i += 3) {
            const vA = index.getX(i + 0);
            const vB = index.getX(i + 1);
            const vC = index.getX(i + 2);
            pA.fromBufferAttribute(positionAttribute, vA);
            pB.fromBufferAttribute(positionAttribute, vB);
            pC.fromBufferAttribute(positionAttribute, vC);
            cb.subVectors(pC, pB);
            ab.subVectors(pA, pB);
            cb.cross(ab);
            nA.fromBufferAttribute(normalAttribute, vA);
            nB.fromBufferAttribute(normalAttribute, vB);
            nC.fromBufferAttribute(normalAttribute, vC);
            nA.add(cb);
            nB.add(cb);
            nC.add(cb);
            normalAttribute.setXYZ(vA, nA.x, nA.y, nA.z);
            normalAttribute.setXYZ(vB, nB.x, nB.y, nB.z);
            normalAttribute.setXYZ(vC, nC.x, nC.y, nC.z);
          }
        } else {
          for (let i = 0, il = positionAttribute.count; i < il; i += 3) {
            pA.fromBufferAttribute(positionAttribute, i + 0);
            pB.fromBufferAttribute(positionAttribute, i + 1);
            pC.fromBufferAttribute(positionAttribute, i + 2);
            cb.subVectors(pC, pB);
            ab.subVectors(pA, pB);
            cb.cross(ab);
            normalAttribute.setXYZ(i + 0, cb.x, cb.y, cb.z);
            normalAttribute.setXYZ(i + 1, cb.x, cb.y, cb.z);
            normalAttribute.setXYZ(i + 2, cb.x, cb.y, cb.z);
          }
        }
        this.normalizeNormals();
        normalAttribute.needsUpdate = true;
      }
    }
    normalizeNormals() {
      const normals = this.attributes.normal;
      for (let i = 0, il = normals.count; i < il; i++) {
        _vector$8.fromBufferAttribute(normals, i);
        _vector$8.normalize();
        normals.setXYZ(i, _vector$8.x, _vector$8.y, _vector$8.z);
      }
    }
    toNonIndexed() {
      function convertBufferAttribute(attribute, indices2) {
        const array = attribute.array;
        const itemSize = attribute.itemSize;
        const normalized = attribute.normalized;
        const array2 = new array.constructor(indices2.length * itemSize);
        let index = 0, index2 = 0;
        for (let i = 0, l = indices2.length; i < l; i++) {
          if (attribute.isInterleavedBufferAttribute) {
            index = indices2[i] * attribute.data.stride + attribute.offset;
          } else {
            index = indices2[i] * itemSize;
          }
          for (let j = 0; j < itemSize; j++) {
            array2[index2++] = array[index++];
          }
        }
        return new BufferAttribute(array2, itemSize, normalized);
      }
      if (this.index === null) {
        console.warn("THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed.");
        return this;
      }
      const geometry2 = new _BufferGeometry();
      const indices = this.index.array;
      const attributes = this.attributes;
      for (const name in attributes) {
        const attribute = attributes[name];
        const newAttribute = convertBufferAttribute(attribute, indices);
        geometry2.setAttribute(name, newAttribute);
      }
      const morphAttributes = this.morphAttributes;
      for (const name in morphAttributes) {
        const morphArray = [];
        const morphAttribute = morphAttributes[name];
        for (let i = 0, il = morphAttribute.length; i < il; i++) {
          const attribute = morphAttribute[i];
          const newAttribute = convertBufferAttribute(attribute, indices);
          morphArray.push(newAttribute);
        }
        geometry2.morphAttributes[name] = morphArray;
      }
      geometry2.morphTargetsRelative = this.morphTargetsRelative;
      const groups = this.groups;
      for (let i = 0, l = groups.length; i < l; i++) {
        const group = groups[i];
        geometry2.addGroup(group.start, group.count, group.materialIndex);
      }
      return geometry2;
    }
    toJSON() {
      const data = {
        metadata: {
          version: 4.6,
          type: "BufferGeometry",
          generator: "BufferGeometry.toJSON"
        }
      };
      data.uuid = this.uuid;
      data.type = this.type;
      if (this.name !== "") data.name = this.name;
      if (Object.keys(this.userData).length > 0) data.userData = this.userData;
      if (this.parameters !== void 0) {
        const parameters = this.parameters;
        for (const key in parameters) {
          if (parameters[key] !== void 0) data[key] = parameters[key];
        }
        return data;
      }
      data.data = { attributes: {} };
      const index = this.index;
      if (index !== null) {
        data.data.index = {
          type: index.array.constructor.name,
          array: Array.prototype.slice.call(index.array)
        };
      }
      const attributes = this.attributes;
      for (const key in attributes) {
        const attribute = attributes[key];
        data.data.attributes[key] = attribute.toJSON(data.data);
      }
      const morphAttributes = {};
      let hasMorphAttributes = false;
      for (const key in this.morphAttributes) {
        const attributeArray = this.morphAttributes[key];
        const array = [];
        for (let i = 0, il = attributeArray.length; i < il; i++) {
          const attribute = attributeArray[i];
          array.push(attribute.toJSON(data.data));
        }
        if (array.length > 0) {
          morphAttributes[key] = array;
          hasMorphAttributes = true;
        }
      }
      if (hasMorphAttributes) {
        data.data.morphAttributes = morphAttributes;
        data.data.morphTargetsRelative = this.morphTargetsRelative;
      }
      const groups = this.groups;
      if (groups.length > 0) {
        data.data.groups = JSON.parse(JSON.stringify(groups));
      }
      const boundingSphere = this.boundingSphere;
      if (boundingSphere !== null) {
        data.data.boundingSphere = {
          center: boundingSphere.center.toArray(),
          radius: boundingSphere.radius
        };
      }
      return data;
    }
    clone() {
      return new this.constructor().copy(this);
    }
    copy(source) {
      this.index = null;
      this.attributes = {};
      this.morphAttributes = {};
      this.groups = [];
      this.boundingBox = null;
      this.boundingSphere = null;
      const data = {};
      this.name = source.name;
      const index = source.index;
      if (index !== null) {
        this.setIndex(index.clone(data));
      }
      const attributes = source.attributes;
      for (const name in attributes) {
        const attribute = attributes[name];
        this.setAttribute(name, attribute.clone(data));
      }
      const morphAttributes = source.morphAttributes;
      for (const name in morphAttributes) {
        const array = [];
        const morphAttribute = morphAttributes[name];
        for (let i = 0, l = morphAttribute.length; i < l; i++) {
          array.push(morphAttribute[i].clone(data));
        }
        this.morphAttributes[name] = array;
      }
      this.morphTargetsRelative = source.morphTargetsRelative;
      const groups = source.groups;
      for (let i = 0, l = groups.length; i < l; i++) {
        const group = groups[i];
        this.addGroup(group.start, group.count, group.materialIndex);
      }
      const boundingBox = source.boundingBox;
      if (boundingBox !== null) {
        this.boundingBox = boundingBox.clone();
      }
      const boundingSphere = source.boundingSphere;
      if (boundingSphere !== null) {
        this.boundingSphere = boundingSphere.clone();
      }
      this.drawRange.start = source.drawRange.start;
      this.drawRange.count = source.drawRange.count;
      this.userData = source.userData;
      return this;
    }
    dispose() {
      this.dispatchEvent({ type: "dispose" });
    }
  };
  var _inverseMatrix$3 = /* @__PURE__ */ new Matrix4();
  var _ray$3 = /* @__PURE__ */ new Ray();
  var _sphere$6 = /* @__PURE__ */ new Sphere();
  var _sphereHitAt = /* @__PURE__ */ new Vector3();
  var _vA$1 = /* @__PURE__ */ new Vector3();
  var _vB$1 = /* @__PURE__ */ new Vector3();
  var _vC$1 = /* @__PURE__ */ new Vector3();
  var _tempA = /* @__PURE__ */ new Vector3();
  var _morphA = /* @__PURE__ */ new Vector3();
  var _uvA$1 = /* @__PURE__ */ new Vector2();
  var _uvB$1 = /* @__PURE__ */ new Vector2();
  var _uvC$1 = /* @__PURE__ */ new Vector2();
  var _normalA = /* @__PURE__ */ new Vector3();
  var _normalB = /* @__PURE__ */ new Vector3();
  var _normalC = /* @__PURE__ */ new Vector3();
  var _intersectionPoint = /* @__PURE__ */ new Vector3();
  var _intersectionPointWorld = /* @__PURE__ */ new Vector3();
  var Mesh = class extends Object3D {
    constructor(geometry = new BufferGeometry(), material = new MeshBasicMaterial()) {
      super();
      this.isMesh = true;
      this.type = "Mesh";
      this.geometry = geometry;
      this.material = material;
      this.updateMorphTargets();
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      if (source.morphTargetInfluences !== void 0) {
        this.morphTargetInfluences = source.morphTargetInfluences.slice();
      }
      if (source.morphTargetDictionary !== void 0) {
        this.morphTargetDictionary = Object.assign({}, source.morphTargetDictionary);
      }
      this.material = Array.isArray(source.material) ? source.material.slice() : source.material;
      this.geometry = source.geometry;
      return this;
    }
    updateMorphTargets() {
      const geometry = this.geometry;
      const morphAttributes = geometry.morphAttributes;
      const keys = Object.keys(morphAttributes);
      if (keys.length > 0) {
        const morphAttribute = morphAttributes[keys[0]];
        if (morphAttribute !== void 0) {
          this.morphTargetInfluences = [];
          this.morphTargetDictionary = {};
          for (let m = 0, ml = morphAttribute.length; m < ml; m++) {
            const name = morphAttribute[m].name || String(m);
            this.morphTargetInfluences.push(0);
            this.morphTargetDictionary[name] = m;
          }
        }
      }
    }
    getVertexPosition(index, target) {
      const geometry = this.geometry;
      const position = geometry.attributes.position;
      const morphPosition = geometry.morphAttributes.position;
      const morphTargetsRelative = geometry.morphTargetsRelative;
      target.fromBufferAttribute(position, index);
      const morphInfluences = this.morphTargetInfluences;
      if (morphPosition && morphInfluences) {
        _morphA.set(0, 0, 0);
        for (let i = 0, il = morphPosition.length; i < il; i++) {
          const influence = morphInfluences[i];
          const morphAttribute = morphPosition[i];
          if (influence === 0) continue;
          _tempA.fromBufferAttribute(morphAttribute, index);
          if (morphTargetsRelative) {
            _morphA.addScaledVector(_tempA, influence);
          } else {
            _morphA.addScaledVector(_tempA.sub(target), influence);
          }
        }
        target.add(_morphA);
      }
      return target;
    }
    raycast(raycaster, intersects2) {
      const geometry = this.geometry;
      const material = this.material;
      const matrixWorld = this.matrixWorld;
      if (material === void 0) return;
      if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
      _sphere$6.copy(geometry.boundingSphere);
      _sphere$6.applyMatrix4(matrixWorld);
      _ray$3.copy(raycaster.ray).recast(raycaster.near);
      if (_sphere$6.containsPoint(_ray$3.origin) === false) {
        if (_ray$3.intersectSphere(_sphere$6, _sphereHitAt) === null) return;
        if (_ray$3.origin.distanceToSquared(_sphereHitAt) > (raycaster.far - raycaster.near) ** 2) return;
      }
      _inverseMatrix$3.copy(matrixWorld).invert();
      _ray$3.copy(raycaster.ray).applyMatrix4(_inverseMatrix$3);
      if (geometry.boundingBox !== null) {
        if (_ray$3.intersectsBox(geometry.boundingBox) === false) return;
      }
      this._computeIntersections(raycaster, intersects2, _ray$3);
    }
    _computeIntersections(raycaster, intersects2, rayLocalSpace) {
      let intersection;
      const geometry = this.geometry;
      const material = this.material;
      const index = geometry.index;
      const position = geometry.attributes.position;
      const uv = geometry.attributes.uv;
      const uv1 = geometry.attributes.uv1;
      const normal = geometry.attributes.normal;
      const groups = geometry.groups;
      const drawRange = geometry.drawRange;
      if (index !== null) {
        if (Array.isArray(material)) {
          for (let i = 0, il = groups.length; i < il; i++) {
            const group = groups[i];
            const groupMaterial = material[group.materialIndex];
            const start = Math.max(group.start, drawRange.start);
            const end = Math.min(index.count, Math.min(group.start + group.count, drawRange.start + drawRange.count));
            for (let j = start, jl = end; j < jl; j += 3) {
              const a = index.getX(j);
              const b = index.getX(j + 1);
              const c = index.getX(j + 2);
              intersection = checkGeometryIntersection(this, groupMaterial, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c);
              if (intersection) {
                intersection.faceIndex = Math.floor(j / 3);
                intersection.face.materialIndex = group.materialIndex;
                intersects2.push(intersection);
              }
            }
          }
        } else {
          const start = Math.max(0, drawRange.start);
          const end = Math.min(index.count, drawRange.start + drawRange.count);
          for (let i = start, il = end; i < il; i += 3) {
            const a = index.getX(i);
            const b = index.getX(i + 1);
            const c = index.getX(i + 2);
            intersection = checkGeometryIntersection(this, material, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c);
            if (intersection) {
              intersection.faceIndex = Math.floor(i / 3);
              intersects2.push(intersection);
            }
          }
        }
      } else if (position !== void 0) {
        if (Array.isArray(material)) {
          for (let i = 0, il = groups.length; i < il; i++) {
            const group = groups[i];
            const groupMaterial = material[group.materialIndex];
            const start = Math.max(group.start, drawRange.start);
            const end = Math.min(position.count, Math.min(group.start + group.count, drawRange.start + drawRange.count));
            for (let j = start, jl = end; j < jl; j += 3) {
              const a = j;
              const b = j + 1;
              const c = j + 2;
              intersection = checkGeometryIntersection(this, groupMaterial, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c);
              if (intersection) {
                intersection.faceIndex = Math.floor(j / 3);
                intersection.face.materialIndex = group.materialIndex;
                intersects2.push(intersection);
              }
            }
          }
        } else {
          const start = Math.max(0, drawRange.start);
          const end = Math.min(position.count, drawRange.start + drawRange.count);
          for (let i = start, il = end; i < il; i += 3) {
            const a = i;
            const b = i + 1;
            const c = i + 2;
            intersection = checkGeometryIntersection(this, material, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c);
            if (intersection) {
              intersection.faceIndex = Math.floor(i / 3);
              intersects2.push(intersection);
            }
          }
        }
      }
    }
  };
  function checkIntersection(object, material, raycaster, ray, pA, pB, pC, point) {
    let intersect;
    if (material.side === BackSide) {
      intersect = ray.intersectTriangle(pC, pB, pA, true, point);
    } else {
      intersect = ray.intersectTriangle(pA, pB, pC, material.side === FrontSide, point);
    }
    if (intersect === null) return null;
    _intersectionPointWorld.copy(point);
    _intersectionPointWorld.applyMatrix4(object.matrixWorld);
    const distance = raycaster.ray.origin.distanceTo(_intersectionPointWorld);
    if (distance < raycaster.near || distance > raycaster.far) return null;
    return {
      distance,
      point: _intersectionPointWorld.clone(),
      object
    };
  }
  function checkGeometryIntersection(object, material, raycaster, ray, uv, uv1, normal, a, b, c) {
    object.getVertexPosition(a, _vA$1);
    object.getVertexPosition(b, _vB$1);
    object.getVertexPosition(c, _vC$1);
    const intersection = checkIntersection(object, material, raycaster, ray, _vA$1, _vB$1, _vC$1, _intersectionPoint);
    if (intersection) {
      if (uv) {
        _uvA$1.fromBufferAttribute(uv, a);
        _uvB$1.fromBufferAttribute(uv, b);
        _uvC$1.fromBufferAttribute(uv, c);
        intersection.uv = Triangle.getInterpolation(_intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2());
      }
      if (uv1) {
        _uvA$1.fromBufferAttribute(uv1, a);
        _uvB$1.fromBufferAttribute(uv1, b);
        _uvC$1.fromBufferAttribute(uv1, c);
        intersection.uv1 = Triangle.getInterpolation(_intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2());
        intersection.uv2 = intersection.uv1;
      }
      if (normal) {
        _normalA.fromBufferAttribute(normal, a);
        _normalB.fromBufferAttribute(normal, b);
        _normalC.fromBufferAttribute(normal, c);
        intersection.normal = Triangle.getInterpolation(_intersectionPoint, _vA$1, _vB$1, _vC$1, _normalA, _normalB, _normalC, new Vector3());
        if (intersection.normal.dot(ray.direction) > 0) {
          intersection.normal.multiplyScalar(-1);
        }
      }
      const face = {
        a,
        b,
        c,
        normal: new Vector3(),
        materialIndex: 0
      };
      Triangle.getNormal(_vA$1, _vB$1, _vC$1, face.normal);
      intersection.face = face;
    }
    return intersection;
  }
  var BoxGeometry = class _BoxGeometry extends BufferGeometry {
    constructor(width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1) {
      super();
      this.type = "BoxGeometry";
      this.parameters = {
        width,
        height,
        depth,
        widthSegments,
        heightSegments,
        depthSegments
      };
      const scope = this;
      widthSegments = Math.floor(widthSegments);
      heightSegments = Math.floor(heightSegments);
      depthSegments = Math.floor(depthSegments);
      const indices = [];
      const vertices = [];
      const normals = [];
      const uvs = [];
      let numberOfVertices = 0;
      let groupStart = 0;
      buildPlane("z", "y", "x", -1, -1, depth, height, width, depthSegments, heightSegments, 0);
      buildPlane("z", "y", "x", 1, -1, depth, height, -width, depthSegments, heightSegments, 1);
      buildPlane("x", "z", "y", 1, 1, width, depth, height, widthSegments, depthSegments, 2);
      buildPlane("x", "z", "y", 1, -1, width, depth, -height, widthSegments, depthSegments, 3);
      buildPlane("x", "y", "z", 1, -1, width, height, depth, widthSegments, heightSegments, 4);
      buildPlane("x", "y", "z", -1, -1, width, height, -depth, widthSegments, heightSegments, 5);
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
      function buildPlane(u, v, w, udir, vdir, width2, height2, depth2, gridX, gridY, materialIndex) {
        const segmentWidth = width2 / gridX;
        const segmentHeight = height2 / gridY;
        const widthHalf = width2 / 2;
        const heightHalf = height2 / 2;
        const depthHalf = depth2 / 2;
        const gridX1 = gridX + 1;
        const gridY1 = gridY + 1;
        let vertexCounter = 0;
        let groupCount = 0;
        const vector = new Vector3();
        for (let iy = 0; iy < gridY1; iy++) {
          const y = iy * segmentHeight - heightHalf;
          for (let ix = 0; ix < gridX1; ix++) {
            const x = ix * segmentWidth - widthHalf;
            vector[u] = x * udir;
            vector[v] = y * vdir;
            vector[w] = depthHalf;
            vertices.push(vector.x, vector.y, vector.z);
            vector[u] = 0;
            vector[v] = 0;
            vector[w] = depth2 > 0 ? 1 : -1;
            normals.push(vector.x, vector.y, vector.z);
            uvs.push(ix / gridX);
            uvs.push(1 - iy / gridY);
            vertexCounter += 1;
          }
        }
        for (let iy = 0; iy < gridY; iy++) {
          for (let ix = 0; ix < gridX; ix++) {
            const a = numberOfVertices + ix + gridX1 * iy;
            const b = numberOfVertices + ix + gridX1 * (iy + 1);
            const c = numberOfVertices + (ix + 1) + gridX1 * (iy + 1);
            const d = numberOfVertices + (ix + 1) + gridX1 * iy;
            indices.push(a, b, d);
            indices.push(b, c, d);
            groupCount += 6;
          }
        }
        scope.addGroup(groupStart, groupCount, materialIndex);
        groupStart += groupCount;
        numberOfVertices += vertexCounter;
      }
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _BoxGeometry(data.width, data.height, data.depth, data.widthSegments, data.heightSegments, data.depthSegments);
    }
  };
  function cloneUniforms(src) {
    const dst = {};
    for (const u in src) {
      dst[u] = {};
      for (const p in src[u]) {
        const property = src[u][p];
        if (property && (property.isColor || property.isMatrix3 || property.isMatrix4 || property.isVector2 || property.isVector3 || property.isVector4 || property.isTexture || property.isQuaternion)) {
          if (property.isRenderTargetTexture) {
            console.warn("UniformsUtils: Textures of render targets cannot be cloned via cloneUniforms() or mergeUniforms().");
            dst[u][p] = null;
          } else {
            dst[u][p] = property.clone();
          }
        } else if (Array.isArray(property)) {
          dst[u][p] = property.slice();
        } else {
          dst[u][p] = property;
        }
      }
    }
    return dst;
  }
  function mergeUniforms(uniforms) {
    const merged = {};
    for (let u = 0; u < uniforms.length; u++) {
      const tmp2 = cloneUniforms(uniforms[u]);
      for (const p in tmp2) {
        merged[p] = tmp2[p];
      }
    }
    return merged;
  }
  function cloneUniformsGroups(src) {
    const dst = [];
    for (let u = 0; u < src.length; u++) {
      dst.push(src[u].clone());
    }
    return dst;
  }
  function getUnlitUniformColorSpace(renderer) {
    if (renderer.getRenderTarget() === null) {
      return renderer.outputColorSpace;
    }
    return ColorManagement.workingColorSpace;
  }
  var UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };
  var default_vertex = "void main() {\n	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";
  var default_fragment = "void main() {\n	gl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";
  var ShaderMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isShaderMaterial = true;
      this.type = "ShaderMaterial";
      this.defines = {};
      this.uniforms = {};
      this.uniformsGroups = [];
      this.vertexShader = default_vertex;
      this.fragmentShader = default_fragment;
      this.linewidth = 1;
      this.wireframe = false;
      this.wireframeLinewidth = 1;
      this.fog = false;
      this.lights = false;
      this.clipping = false;
      this.forceSinglePass = true;
      this.extensions = {
        derivatives: false,
        // set to use derivatives
        fragDepth: false,
        // set to use fragment depth values
        drawBuffers: false,
        // set to use draw buffers
        shaderTextureLOD: false,
        // set to use shader texture LOD
        clipCullDistance: false
        // set to use vertex shader clipping
      };
      this.defaultAttributeValues = {
        "color": [1, 1, 1],
        "uv": [0, 0],
        "uv1": [0, 0]
      };
      this.index0AttributeName = void 0;
      this.uniformsNeedUpdate = false;
      this.glslVersion = null;
      if (parameters !== void 0) {
        this.setValues(parameters);
      }
    }
    copy(source) {
      super.copy(source);
      this.fragmentShader = source.fragmentShader;
      this.vertexShader = source.vertexShader;
      this.uniforms = cloneUniforms(source.uniforms);
      this.uniformsGroups = cloneUniformsGroups(source.uniformsGroups);
      this.defines = Object.assign({}, source.defines);
      this.wireframe = source.wireframe;
      this.wireframeLinewidth = source.wireframeLinewidth;
      this.fog = source.fog;
      this.lights = source.lights;
      this.clipping = source.clipping;
      this.extensions = Object.assign({}, source.extensions);
      this.glslVersion = source.glslVersion;
      return this;
    }
    toJSON(meta) {
      const data = super.toJSON(meta);
      data.glslVersion = this.glslVersion;
      data.uniforms = {};
      for (const name in this.uniforms) {
        const uniform = this.uniforms[name];
        const value = uniform.value;
        if (value && value.isTexture) {
          data.uniforms[name] = {
            type: "t",
            value: value.toJSON(meta).uuid
          };
        } else if (value && value.isColor) {
          data.uniforms[name] = {
            type: "c",
            value: value.getHex()
          };
        } else if (value && value.isVector2) {
          data.uniforms[name] = {
            type: "v2",
            value: value.toArray()
          };
        } else if (value && value.isVector3) {
          data.uniforms[name] = {
            type: "v3",
            value: value.toArray()
          };
        } else if (value && value.isVector4) {
          data.uniforms[name] = {
            type: "v4",
            value: value.toArray()
          };
        } else if (value && value.isMatrix3) {
          data.uniforms[name] = {
            type: "m3",
            value: value.toArray()
          };
        } else if (value && value.isMatrix4) {
          data.uniforms[name] = {
            type: "m4",
            value: value.toArray()
          };
        } else {
          data.uniforms[name] = {
            value
          };
        }
      }
      if (Object.keys(this.defines).length > 0) data.defines = this.defines;
      data.vertexShader = this.vertexShader;
      data.fragmentShader = this.fragmentShader;
      data.lights = this.lights;
      data.clipping = this.clipping;
      const extensions = {};
      for (const key in this.extensions) {
        if (this.extensions[key] === true) extensions[key] = true;
      }
      if (Object.keys(extensions).length > 0) data.extensions = extensions;
      return data;
    }
  };
  var Camera = class extends Object3D {
    constructor() {
      super();
      this.isCamera = true;
      this.type = "Camera";
      this.matrixWorldInverse = new Matrix4();
      this.projectionMatrix = new Matrix4();
      this.projectionMatrixInverse = new Matrix4();
      this.coordinateSystem = WebGLCoordinateSystem;
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.matrixWorldInverse.copy(source.matrixWorldInverse);
      this.projectionMatrix.copy(source.projectionMatrix);
      this.projectionMatrixInverse.copy(source.projectionMatrixInverse);
      this.coordinateSystem = source.coordinateSystem;
      return this;
    }
    getWorldDirection(target) {
      return super.getWorldDirection(target).negate();
    }
    updateMatrixWorld(force) {
      super.updateMatrixWorld(force);
      this.matrixWorldInverse.copy(this.matrixWorld).invert();
    }
    updateWorldMatrix(updateParents, updateChildren) {
      super.updateWorldMatrix(updateParents, updateChildren);
      this.matrixWorldInverse.copy(this.matrixWorld).invert();
    }
    clone() {
      return new this.constructor().copy(this);
    }
  };
  var PerspectiveCamera = class extends Camera {
    constructor(fov2 = 50, aspect2 = 1, near = 0.1, far = 2e3) {
      super();
      this.isPerspectiveCamera = true;
      this.type = "PerspectiveCamera";
      this.fov = fov2;
      this.zoom = 1;
      this.near = near;
      this.far = far;
      this.focus = 10;
      this.aspect = aspect2;
      this.view = null;
      this.filmGauge = 35;
      this.filmOffset = 0;
      this.updateProjectionMatrix();
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.fov = source.fov;
      this.zoom = source.zoom;
      this.near = source.near;
      this.far = source.far;
      this.focus = source.focus;
      this.aspect = source.aspect;
      this.view = source.view === null ? null : Object.assign({}, source.view);
      this.filmGauge = source.filmGauge;
      this.filmOffset = source.filmOffset;
      return this;
    }
    /**
     * Sets the FOV by focal length in respect to the current .filmGauge.
     *
     * The default film gauge is 35, so that the focal length can be specified for
     * a 35mm (full frame) camera.
     *
     * Values for focal length and film gauge must have the same unit.
     */
    setFocalLength(focalLength) {
      const vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;
      this.fov = RAD2DEG * 2 * Math.atan(vExtentSlope);
      this.updateProjectionMatrix();
    }
    /**
     * Calculates the focal length from the current .fov and .filmGauge.
     */
    getFocalLength() {
      const vExtentSlope = Math.tan(DEG2RAD * 0.5 * this.fov);
      return 0.5 * this.getFilmHeight() / vExtentSlope;
    }
    getEffectiveFOV() {
      return RAD2DEG * 2 * Math.atan(
        Math.tan(DEG2RAD * 0.5 * this.fov) / this.zoom
      );
    }
    getFilmWidth() {
      return this.filmGauge * Math.min(this.aspect, 1);
    }
    getFilmHeight() {
      return this.filmGauge / Math.max(this.aspect, 1);
    }
    /**
     * Sets an offset in a larger frustum. This is useful for multi-window or
     * multi-monitor/multi-machine setups.
     *
     * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
     * the monitors are in grid like this
     *
     *   +---+---+---+
     *   | A | B | C |
     *   +---+---+---+
     *   | D | E | F |
     *   +---+---+---+
     *
     * then for each monitor you would call it like this
     *
     *   const w = 1920;
     *   const h = 1080;
     *   const fullWidth = w * 3;
     *   const fullHeight = h * 2;
     *
     *   --A--
     *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
     *   --B--
     *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
     *   --C--
     *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
     *   --D--
     *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
     *   --E--
     *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
     *   --F--
     *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
     *
     *   Note there is no reason monitors have to be the same size or in a grid.
     */
    setViewOffset(fullWidth, fullHeight, x, y, width, height) {
      this.aspect = fullWidth / fullHeight;
      if (this.view === null) {
        this.view = {
          enabled: true,
          fullWidth: 1,
          fullHeight: 1,
          offsetX: 0,
          offsetY: 0,
          width: 1,
          height: 1
        };
      }
      this.view.enabled = true;
      this.view.fullWidth = fullWidth;
      this.view.fullHeight = fullHeight;
      this.view.offsetX = x;
      this.view.offsetY = y;
      this.view.width = width;
      this.view.height = height;
      this.updateProjectionMatrix();
    }
    clearViewOffset() {
      if (this.view !== null) {
        this.view.enabled = false;
      }
      this.updateProjectionMatrix();
    }
    updateProjectionMatrix() {
      const near = this.near;
      let top = near * Math.tan(DEG2RAD * 0.5 * this.fov) / this.zoom;
      let height = 2 * top;
      let width = this.aspect * height;
      let left = -0.5 * width;
      const view = this.view;
      if (this.view !== null && this.view.enabled) {
        const fullWidth = view.fullWidth, fullHeight = view.fullHeight;
        left += view.offsetX * width / fullWidth;
        top -= view.offsetY * height / fullHeight;
        width *= view.width / fullWidth;
        height *= view.height / fullHeight;
      }
      const skew = this.filmOffset;
      if (skew !== 0) left += near * skew / this.getFilmWidth();
      this.projectionMatrix.makePerspective(left, left + width, top, top - height, near, this.far, this.coordinateSystem);
      this.projectionMatrixInverse.copy(this.projectionMatrix).invert();
    }
    toJSON(meta) {
      const data = super.toJSON(meta);
      data.object.fov = this.fov;
      data.object.zoom = this.zoom;
      data.object.near = this.near;
      data.object.far = this.far;
      data.object.focus = this.focus;
      data.object.aspect = this.aspect;
      if (this.view !== null) data.object.view = Object.assign({}, this.view);
      data.object.filmGauge = this.filmGauge;
      data.object.filmOffset = this.filmOffset;
      return data;
    }
  };
  var fov = -90;
  var aspect = 1;
  var CubeCamera = class extends Object3D {
    constructor(near, far, renderTarget) {
      super();
      this.type = "CubeCamera";
      this.renderTarget = renderTarget;
      this.coordinateSystem = null;
      this.activeMipmapLevel = 0;
      const cameraPX = new PerspectiveCamera(fov, aspect, near, far);
      cameraPX.layers = this.layers;
      this.add(cameraPX);
      const cameraNX = new PerspectiveCamera(fov, aspect, near, far);
      cameraNX.layers = this.layers;
      this.add(cameraNX);
      const cameraPY = new PerspectiveCamera(fov, aspect, near, far);
      cameraPY.layers = this.layers;
      this.add(cameraPY);
      const cameraNY = new PerspectiveCamera(fov, aspect, near, far);
      cameraNY.layers = this.layers;
      this.add(cameraNY);
      const cameraPZ = new PerspectiveCamera(fov, aspect, near, far);
      cameraPZ.layers = this.layers;
      this.add(cameraPZ);
      const cameraNZ = new PerspectiveCamera(fov, aspect, near, far);
      cameraNZ.layers = this.layers;
      this.add(cameraNZ);
    }
    updateCoordinateSystem() {
      const coordinateSystem = this.coordinateSystem;
      const cameras = this.children.concat();
      const [cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ] = cameras;
      for (const camera of cameras) this.remove(camera);
      if (coordinateSystem === WebGLCoordinateSystem) {
        cameraPX.up.set(0, 1, 0);
        cameraPX.lookAt(1, 0, 0);
        cameraNX.up.set(0, 1, 0);
        cameraNX.lookAt(-1, 0, 0);
        cameraPY.up.set(0, 0, -1);
        cameraPY.lookAt(0, 1, 0);
        cameraNY.up.set(0, 0, 1);
        cameraNY.lookAt(0, -1, 0);
        cameraPZ.up.set(0, 1, 0);
        cameraPZ.lookAt(0, 0, 1);
        cameraNZ.up.set(0, 1, 0);
        cameraNZ.lookAt(0, 0, -1);
      } else if (coordinateSystem === WebGPUCoordinateSystem) {
        cameraPX.up.set(0, -1, 0);
        cameraPX.lookAt(-1, 0, 0);
        cameraNX.up.set(0, -1, 0);
        cameraNX.lookAt(1, 0, 0);
        cameraPY.up.set(0, 0, 1);
        cameraPY.lookAt(0, 1, 0);
        cameraNY.up.set(0, 0, -1);
        cameraNY.lookAt(0, -1, 0);
        cameraPZ.up.set(0, -1, 0);
        cameraPZ.lookAt(0, 0, 1);
        cameraNZ.up.set(0, -1, 0);
        cameraNZ.lookAt(0, 0, -1);
      } else {
        throw new Error("THREE.CubeCamera.updateCoordinateSystem(): Invalid coordinate system: " + coordinateSystem);
      }
      for (const camera of cameras) {
        this.add(camera);
        camera.updateMatrixWorld();
      }
    }
    update(renderer, scene) {
      if (this.parent === null) this.updateMatrixWorld();
      const { renderTarget, activeMipmapLevel } = this;
      if (this.coordinateSystem !== renderer.coordinateSystem) {
        this.coordinateSystem = renderer.coordinateSystem;
        this.updateCoordinateSystem();
      }
      const [cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ] = this.children;
      const currentRenderTarget = renderer.getRenderTarget();
      const currentActiveCubeFace = renderer.getActiveCubeFace();
      const currentActiveMipmapLevel = renderer.getActiveMipmapLevel();
      const currentXrEnabled = renderer.xr.enabled;
      renderer.xr.enabled = false;
      const generateMipmaps = renderTarget.texture.generateMipmaps;
      renderTarget.texture.generateMipmaps = false;
      renderer.setRenderTarget(renderTarget, 0, activeMipmapLevel);
      renderer.render(scene, cameraPX);
      renderer.setRenderTarget(renderTarget, 1, activeMipmapLevel);
      renderer.render(scene, cameraNX);
      renderer.setRenderTarget(renderTarget, 2, activeMipmapLevel);
      renderer.render(scene, cameraPY);
      renderer.setRenderTarget(renderTarget, 3, activeMipmapLevel);
      renderer.render(scene, cameraNY);
      renderer.setRenderTarget(renderTarget, 4, activeMipmapLevel);
      renderer.render(scene, cameraPZ);
      renderTarget.texture.generateMipmaps = generateMipmaps;
      renderer.setRenderTarget(renderTarget, 5, activeMipmapLevel);
      renderer.render(scene, cameraNZ);
      renderer.setRenderTarget(currentRenderTarget, currentActiveCubeFace, currentActiveMipmapLevel);
      renderer.xr.enabled = currentXrEnabled;
      renderTarget.texture.needsPMREMUpdate = true;
    }
  };
  var CubeTexture = class extends Texture {
    constructor(images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace) {
      images = images !== void 0 ? images : [];
      mapping = mapping !== void 0 ? mapping : CubeReflectionMapping;
      super(images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace);
      this.isCubeTexture = true;
      this.flipY = false;
    }
    get images() {
      return this.image;
    }
    set images(value) {
      this.image = value;
    }
  };
  var WebGLCubeRenderTarget = class extends WebGLRenderTarget {
    constructor(size = 1, options = {}) {
      super(size, size, options);
      this.isWebGLCubeRenderTarget = true;
      const image = { width: size, height: size, depth: 1 };
      const images = [image, image, image, image, image, image];
      if (options.encoding !== void 0) {
        warnOnce("THREE.WebGLCubeRenderTarget: option.encoding has been replaced by option.colorSpace.");
        options.colorSpace = options.encoding === sRGBEncoding ? SRGBColorSpace : NoColorSpace;
      }
      this.texture = new CubeTexture(images, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.colorSpace);
      this.texture.isRenderTargetTexture = true;
      this.texture.generateMipmaps = options.generateMipmaps !== void 0 ? options.generateMipmaps : false;
      this.texture.minFilter = options.minFilter !== void 0 ? options.minFilter : LinearFilter;
    }
    fromEquirectangularTexture(renderer, texture) {
      this.texture.type = texture.type;
      this.texture.colorSpace = texture.colorSpace;
      this.texture.generateMipmaps = texture.generateMipmaps;
      this.texture.minFilter = texture.minFilter;
      this.texture.magFilter = texture.magFilter;
      const shader = {
        uniforms: {
          tEquirect: { value: null }
        },
        vertexShader: (
          /* glsl */
          `

				varying vec3 vWorldDirection;

				vec3 transformDirection( in vec3 dir, in mat4 matrix ) {

					return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );

				}

				void main() {

					vWorldDirection = transformDirection( position, modelMatrix );

					#include <begin_vertex>
					#include <project_vertex>

				}
			`
        ),
        fragmentShader: (
          /* glsl */
          `

				uniform sampler2D tEquirect;

				varying vec3 vWorldDirection;

				#include <common>

				void main() {

					vec3 direction = normalize( vWorldDirection );

					vec2 sampleUV = equirectUv( direction );

					gl_FragColor = texture2D( tEquirect, sampleUV );

				}
			`
        )
      };
      const geometry = new BoxGeometry(5, 5, 5);
      const material = new ShaderMaterial({
        name: "CubemapFromEquirect",
        uniforms: cloneUniforms(shader.uniforms),
        vertexShader: shader.vertexShader,
        fragmentShader: shader.fragmentShader,
        side: BackSide,
        blending: NoBlending
      });
      material.uniforms.tEquirect.value = texture;
      const mesh = new Mesh(geometry, material);
      const currentMinFilter = texture.minFilter;
      if (texture.minFilter === LinearMipmapLinearFilter) texture.minFilter = LinearFilter;
      const camera = new CubeCamera(1, 10, this);
      camera.update(renderer, mesh);
      texture.minFilter = currentMinFilter;
      mesh.geometry.dispose();
      mesh.material.dispose();
      return this;
    }
    clear(renderer, color, depth, stencil) {
      const currentRenderTarget = renderer.getRenderTarget();
      for (let i = 0; i < 6; i++) {
        renderer.setRenderTarget(this, i);
        renderer.clear(color, depth, stencil);
      }
      renderer.setRenderTarget(currentRenderTarget);
    }
  };
  var _vector1 = /* @__PURE__ */ new Vector3();
  var _vector2 = /* @__PURE__ */ new Vector3();
  var _normalMatrix = /* @__PURE__ */ new Matrix3();
  var Plane = class {
    constructor(normal = new Vector3(1, 0, 0), constant = 0) {
      this.isPlane = true;
      this.normal = normal;
      this.constant = constant;
    }
    set(normal, constant) {
      this.normal.copy(normal);
      this.constant = constant;
      return this;
    }
    setComponents(x, y, z, w) {
      this.normal.set(x, y, z);
      this.constant = w;
      return this;
    }
    setFromNormalAndCoplanarPoint(normal, point) {
      this.normal.copy(normal);
      this.constant = -point.dot(this.normal);
      return this;
    }
    setFromCoplanarPoints(a, b, c) {
      const normal = _vector1.subVectors(c, b).cross(_vector2.subVectors(a, b)).normalize();
      this.setFromNormalAndCoplanarPoint(normal, a);
      return this;
    }
    copy(plane) {
      this.normal.copy(plane.normal);
      this.constant = plane.constant;
      return this;
    }
    normalize() {
      const inverseNormalLength = 1 / this.normal.length();
      this.normal.multiplyScalar(inverseNormalLength);
      this.constant *= inverseNormalLength;
      return this;
    }
    negate() {
      this.constant *= -1;
      this.normal.negate();
      return this;
    }
    distanceToPoint(point) {
      return this.normal.dot(point) + this.constant;
    }
    distanceToSphere(sphere) {
      return this.distanceToPoint(sphere.center) - sphere.radius;
    }
    projectPoint(point, target) {
      return target.copy(point).addScaledVector(this.normal, -this.distanceToPoint(point));
    }
    intersectLine(line, target) {
      const direction = line.delta(_vector1);
      const denominator = this.normal.dot(direction);
      if (denominator === 0) {
        if (this.distanceToPoint(line.start) === 0) {
          return target.copy(line.start);
        }
        return null;
      }
      const t = -(line.start.dot(this.normal) + this.constant) / denominator;
      if (t < 0 || t > 1) {
        return null;
      }
      return target.copy(line.start).addScaledVector(direction, t);
    }
    intersectsLine(line) {
      const startSign = this.distanceToPoint(line.start);
      const endSign = this.distanceToPoint(line.end);
      return startSign < 0 && endSign > 0 || endSign < 0 && startSign > 0;
    }
    intersectsBox(box) {
      return box.intersectsPlane(this);
    }
    intersectsSphere(sphere) {
      return sphere.intersectsPlane(this);
    }
    coplanarPoint(target) {
      return target.copy(this.normal).multiplyScalar(-this.constant);
    }
    applyMatrix4(matrix, optionalNormalMatrix) {
      const normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix(matrix);
      const referencePoint = this.coplanarPoint(_vector1).applyMatrix4(matrix);
      const normal = this.normal.applyMatrix3(normalMatrix).normalize();
      this.constant = -referencePoint.dot(normal);
      return this;
    }
    translate(offset) {
      this.constant -= offset.dot(this.normal);
      return this;
    }
    equals(plane) {
      return plane.normal.equals(this.normal) && plane.constant === this.constant;
    }
    clone() {
      return new this.constructor().copy(this);
    }
  };
  var _sphere$5 = /* @__PURE__ */ new Sphere();
  var _vector$7 = /* @__PURE__ */ new Vector3();
  var Frustum = class {
    constructor(p0 = new Plane(), p1 = new Plane(), p2 = new Plane(), p3 = new Plane(), p4 = new Plane(), p5 = new Plane()) {
      this.planes = [p0, p1, p2, p3, p4, p5];
    }
    set(p0, p1, p2, p3, p4, p5) {
      const planes = this.planes;
      planes[0].copy(p0);
      planes[1].copy(p1);
      planes[2].copy(p2);
      planes[3].copy(p3);
      planes[4].copy(p4);
      planes[5].copy(p5);
      return this;
    }
    copy(frustum) {
      const planes = this.planes;
      for (let i = 0; i < 6; i++) {
        planes[i].copy(frustum.planes[i]);
      }
      return this;
    }
    setFromProjectionMatrix(m, coordinateSystem = WebGLCoordinateSystem) {
      const planes = this.planes;
      const me = m.elements;
      const me0 = me[0], me1 = me[1], me2 = me[2], me3 = me[3];
      const me4 = me[4], me5 = me[5], me6 = me[6], me7 = me[7];
      const me8 = me[8], me9 = me[9], me10 = me[10], me11 = me[11];
      const me12 = me[12], me13 = me[13], me14 = me[14], me15 = me[15];
      planes[0].setComponents(me3 - me0, me7 - me4, me11 - me8, me15 - me12).normalize();
      planes[1].setComponents(me3 + me0, me7 + me4, me11 + me8, me15 + me12).normalize();
      planes[2].setComponents(me3 + me1, me7 + me5, me11 + me9, me15 + me13).normalize();
      planes[3].setComponents(me3 - me1, me7 - me5, me11 - me9, me15 - me13).normalize();
      planes[4].setComponents(me3 - me2, me7 - me6, me11 - me10, me15 - me14).normalize();
      if (coordinateSystem === WebGLCoordinateSystem) {
        planes[5].setComponents(me3 + me2, me7 + me6, me11 + me10, me15 + me14).normalize();
      } else if (coordinateSystem === WebGPUCoordinateSystem) {
        planes[5].setComponents(me2, me6, me10, me14).normalize();
      } else {
        throw new Error("THREE.Frustum.setFromProjectionMatrix(): Invalid coordinate system: " + coordinateSystem);
      }
      return this;
    }
    intersectsObject(object) {
      if (object.boundingSphere !== void 0) {
        if (object.boundingSphere === null) object.computeBoundingSphere();
        _sphere$5.copy(object.boundingSphere).applyMatrix4(object.matrixWorld);
      } else {
        const geometry = object.geometry;
        if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
        _sphere$5.copy(geometry.boundingSphere).applyMatrix4(object.matrixWorld);
      }
      return this.intersectsSphere(_sphere$5);
    }
    intersectsSprite(sprite) {
      _sphere$5.center.set(0, 0, 0);
      _sphere$5.radius = 0.7071067811865476;
      _sphere$5.applyMatrix4(sprite.matrixWorld);
      return this.intersectsSphere(_sphere$5);
    }
    intersectsSphere(sphere) {
      const planes = this.planes;
      const center = sphere.center;
      const negRadius = -sphere.radius;
      for (let i = 0; i < 6; i++) {
        const distance = planes[i].distanceToPoint(center);
        if (distance < negRadius) {
          return false;
        }
      }
      return true;
    }
    intersectsBox(box) {
      const planes = this.planes;
      for (let i = 0; i < 6; i++) {
        const plane = planes[i];
        _vector$7.x = plane.normal.x > 0 ? box.max.x : box.min.x;
        _vector$7.y = plane.normal.y > 0 ? box.max.y : box.min.y;
        _vector$7.z = plane.normal.z > 0 ? box.max.z : box.min.z;
        if (plane.distanceToPoint(_vector$7) < 0) {
          return false;
        }
      }
      return true;
    }
    containsPoint(point) {
      const planes = this.planes;
      for (let i = 0; i < 6; i++) {
        if (planes[i].distanceToPoint(point) < 0) {
          return false;
        }
      }
      return true;
    }
    clone() {
      return new this.constructor().copy(this);
    }
  };
  function WebGLAnimation() {
    let context = null;
    let isAnimating = false;
    let animationLoop = null;
    let requestId = null;
    function onAnimationFrame(time, frame) {
      animationLoop(time, frame);
      requestId = context.requestAnimationFrame(onAnimationFrame);
    }
    return {
      start: function() {
        if (isAnimating === true) return;
        if (animationLoop === null) return;
        requestId = context.requestAnimationFrame(onAnimationFrame);
        isAnimating = true;
      },
      stop: function() {
        context.cancelAnimationFrame(requestId);
        isAnimating = false;
      },
      setAnimationLoop: function(callback) {
        animationLoop = callback;
      },
      setContext: function(value) {
        context = value;
      }
    };
  }
  function WebGLAttributes(gl, capabilities) {
    const isWebGL2 = capabilities.isWebGL2;
    const buffers = /* @__PURE__ */ new WeakMap();
    function createBuffer(attribute, bufferType) {
      const array = attribute.array;
      const usage = attribute.usage;
      const size = array.byteLength;
      const buffer = gl.createBuffer();
      gl.bindBuffer(bufferType, buffer);
      gl.bufferData(bufferType, array, usage);
      attribute.onUploadCallback();
      let type;
      if (array instanceof Float32Array) {
        type = gl.FLOAT;
      } else if (array instanceof Uint16Array) {
        if (attribute.isFloat16BufferAttribute) {
          if (isWebGL2) {
            type = gl.HALF_FLOAT;
          } else {
            throw new Error("THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2.");
          }
        } else {
          type = gl.UNSIGNED_SHORT;
        }
      } else if (array instanceof Int16Array) {
        type = gl.SHORT;
      } else if (array instanceof Uint32Array) {
        type = gl.UNSIGNED_INT;
      } else if (array instanceof Int32Array) {
        type = gl.INT;
      } else if (array instanceof Int8Array) {
        type = gl.BYTE;
      } else if (array instanceof Uint8Array) {
        type = gl.UNSIGNED_BYTE;
      } else if (array instanceof Uint8ClampedArray) {
        type = gl.UNSIGNED_BYTE;
      } else {
        throw new Error("THREE.WebGLAttributes: Unsupported buffer data format: " + array);
      }
      return {
        buffer,
        type,
        bytesPerElement: array.BYTES_PER_ELEMENT,
        version: attribute.version,
        size
      };
    }
    function updateBuffer(buffer, attribute, bufferType) {
      const array = attribute.array;
      const updateRange = attribute._updateRange;
      const updateRanges = attribute.updateRanges;
      gl.bindBuffer(bufferType, buffer);
      if (updateRange.count === -1 && updateRanges.length === 0) {
        gl.bufferSubData(bufferType, 0, array);
      }
      if (updateRanges.length !== 0) {
        for (let i = 0, l = updateRanges.length; i < l; i++) {
          const range = updateRanges[i];
          if (isWebGL2) {
            gl.bufferSubData(
              bufferType,
              range.start * array.BYTES_PER_ELEMENT,
              array,
              range.start,
              range.count
            );
          } else {
            gl.bufferSubData(
              bufferType,
              range.start * array.BYTES_PER_ELEMENT,
              array.subarray(range.start, range.start + range.count)
            );
          }
        }
        attribute.clearUpdateRanges();
      }
      if (updateRange.count !== -1) {
        if (isWebGL2) {
          gl.bufferSubData(
            bufferType,
            updateRange.offset * array.BYTES_PER_ELEMENT,
            array,
            updateRange.offset,
            updateRange.count
          );
        } else {
          gl.bufferSubData(
            bufferType,
            updateRange.offset * array.BYTES_PER_ELEMENT,
            array.subarray(updateRange.offset, updateRange.offset + updateRange.count)
          );
        }
        updateRange.count = -1;
      }
      attribute.onUploadCallback();
    }
    function get(attribute) {
      if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
      return buffers.get(attribute);
    }
    function remove(attribute) {
      if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
      const data = buffers.get(attribute);
      if (data) {
        gl.deleteBuffer(data.buffer);
        buffers.delete(attribute);
      }
    }
    function update(attribute, bufferType) {
      if (attribute.isGLBufferAttribute) {
        const cached = buffers.get(attribute);
        if (!cached || cached.version < attribute.version) {
          buffers.set(attribute, {
            buffer: attribute.buffer,
            type: attribute.type,
            bytesPerElement: attribute.elementSize,
            version: attribute.version
          });
        }
        return;
      }
      if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
      const data = buffers.get(attribute);
      if (data === void 0) {
        buffers.set(attribute, createBuffer(attribute, bufferType));
      } else if (data.version < attribute.version) {
        if (data.size !== attribute.array.byteLength) {
          throw new Error("THREE.WebGLAttributes: The size of the buffer attribute's array buffer does not match the original size. Resizing buffer attributes is not supported.");
        }
        updateBuffer(data.buffer, attribute, bufferType);
        data.version = attribute.version;
      }
    }
    return {
      get,
      remove,
      update
    };
  }
  var PlaneGeometry = class _PlaneGeometry extends BufferGeometry {
    constructor(width = 1, height = 1, widthSegments = 1, heightSegments = 1) {
      super();
      this.type = "PlaneGeometry";
      this.parameters = {
        width,
        height,
        widthSegments,
        heightSegments
      };
      const width_half = width / 2;
      const height_half = height / 2;
      const gridX = Math.floor(widthSegments);
      const gridY = Math.floor(heightSegments);
      const gridX1 = gridX + 1;
      const gridY1 = gridY + 1;
      const segment_width = width / gridX;
      const segment_height = height / gridY;
      const indices = [];
      const vertices = [];
      const normals = [];
      const uvs = [];
      for (let iy = 0; iy < gridY1; iy++) {
        const y = iy * segment_height - height_half;
        for (let ix = 0; ix < gridX1; ix++) {
          const x = ix * segment_width - width_half;
          vertices.push(x, -y, 0);
          normals.push(0, 0, 1);
          uvs.push(ix / gridX);
          uvs.push(1 - iy / gridY);
        }
      }
      for (let iy = 0; iy < gridY; iy++) {
        for (let ix = 0; ix < gridX; ix++) {
          const a = ix + gridX1 * iy;
          const b = ix + gridX1 * (iy + 1);
          const c = ix + 1 + gridX1 * (iy + 1);
          const d = ix + 1 + gridX1 * iy;
          indices.push(a, b, d);
          indices.push(b, c, d);
        }
      }
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _PlaneGeometry(data.width, data.height, data.widthSegments, data.heightSegments);
    }
  };
  var alphahash_fragment = "#ifdef USE_ALPHAHASH\n	if ( diffuseColor.a < getAlphaHashThreshold( vPosition ) ) discard;\n#endif";
  var alphahash_pars_fragment = "#ifdef USE_ALPHAHASH\n	const float ALPHA_HASH_SCALE = 0.05;\n	float hash2D( vec2 value ) {\n		return fract( 1.0e4 * sin( 17.0 * value.x + 0.1 * value.y ) * ( 0.1 + abs( sin( 13.0 * value.y + value.x ) ) ) );\n	}\n	float hash3D( vec3 value ) {\n		return hash2D( vec2( hash2D( value.xy ), value.z ) );\n	}\n	float getAlphaHashThreshold( vec3 position ) {\n		float maxDeriv = max(\n			length( dFdx( position.xyz ) ),\n			length( dFdy( position.xyz ) )\n		);\n		float pixScale = 1.0 / ( ALPHA_HASH_SCALE * maxDeriv );\n		vec2 pixScales = vec2(\n			exp2( floor( log2( pixScale ) ) ),\n			exp2( ceil( log2( pixScale ) ) )\n		);\n		vec2 alpha = vec2(\n			hash3D( floor( pixScales.x * position.xyz ) ),\n			hash3D( floor( pixScales.y * position.xyz ) )\n		);\n		float lerpFactor = fract( log2( pixScale ) );\n		float x = ( 1.0 - lerpFactor ) * alpha.x + lerpFactor * alpha.y;\n		float a = min( lerpFactor, 1.0 - lerpFactor );\n		vec3 cases = vec3(\n			x * x / ( 2.0 * a * ( 1.0 - a ) ),\n			( x - 0.5 * a ) / ( 1.0 - a ),\n			1.0 - ( ( 1.0 - x ) * ( 1.0 - x ) / ( 2.0 * a * ( 1.0 - a ) ) )\n		);\n		float threshold = ( x < ( 1.0 - a ) )\n			? ( ( x < a ) ? cases.x : cases.y )\n			: cases.z;\n		return clamp( threshold , 1.0e-6, 1.0 );\n	}\n#endif";
  var alphamap_fragment = "#ifdef USE_ALPHAMAP\n	diffuseColor.a *= texture2D( alphaMap, vAlphaMapUv ).g;\n#endif";
  var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n	uniform sampler2D alphaMap;\n#endif";
  var alphatest_fragment = "#ifdef USE_ALPHATEST\n	if ( diffuseColor.a < alphaTest ) discard;\n#endif";
  var alphatest_pars_fragment = "#ifdef USE_ALPHATEST\n	uniform float alphaTest;\n#endif";
  var aomap_fragment = "#ifdef USE_AOMAP\n	float ambientOcclusion = ( texture2D( aoMap, vAoMapUv ).r - 1.0 ) * aoMapIntensity + 1.0;\n	reflectedLight.indirectDiffuse *= ambientOcclusion;\n	#if defined( USE_CLEARCOAT ) \n		clearcoatSpecularIndirect *= ambientOcclusion;\n	#endif\n	#if defined( USE_SHEEN ) \n		sheenSpecularIndirect *= ambientOcclusion;\n	#endif\n	#if defined( USE_ENVMAP ) && defined( STANDARD )\n		float dotNV = saturate( dot( geometryNormal, geometryViewDir ) );\n		reflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.roughness );\n	#endif\n#endif";
  var aomap_pars_fragment = "#ifdef USE_AOMAP\n	uniform sampler2D aoMap;\n	uniform float aoMapIntensity;\n#endif";
  var batching_pars_vertex = "#ifdef USE_BATCHING\n	attribute float batchId;\n	uniform highp sampler2D batchingTexture;\n	mat4 getBatchingMatrix( const in float i ) {\n		int size = textureSize( batchingTexture, 0 ).x;\n		int j = int( i ) * 4;\n		int x = j % size;\n		int y = j / size;\n		vec4 v1 = texelFetch( batchingTexture, ivec2( x, y ), 0 );\n		vec4 v2 = texelFetch( batchingTexture, ivec2( x + 1, y ), 0 );\n		vec4 v3 = texelFetch( batchingTexture, ivec2( x + 2, y ), 0 );\n		vec4 v4 = texelFetch( batchingTexture, ivec2( x + 3, y ), 0 );\n		return mat4( v1, v2, v3, v4 );\n	}\n#endif";
  var batching_vertex = "#ifdef USE_BATCHING\n	mat4 batchingMatrix = getBatchingMatrix( batchId );\n#endif";
  var begin_vertex = "vec3 transformed = vec3( position );\n#ifdef USE_ALPHAHASH\n	vPosition = vec3( position );\n#endif";
  var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n	vec3 objectTangent = vec3( tangent.xyz );\n#endif";
  var bsdfs = "float G_BlinnPhong_Implicit( ) {\n	return 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n	return RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_BlinnPhong( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float shininess ) {\n	vec3 halfDir = normalize( lightDir + viewDir );\n	float dotNH = saturate( dot( normal, halfDir ) );\n	float dotVH = saturate( dot( viewDir, halfDir ) );\n	vec3 F = F_Schlick( specularColor, 1.0, dotVH );\n	float G = G_BlinnPhong_Implicit( );\n	float D = D_BlinnPhong( shininess, dotNH );\n	return F * ( G * D );\n} // validated";
  var iridescence_fragment = "#ifdef USE_IRIDESCENCE\n	const mat3 XYZ_TO_REC709 = mat3(\n		 3.2404542, -0.9692660,  0.0556434,\n		-1.5371385,  1.8760108, -0.2040259,\n		-0.4985314,  0.0415560,  1.0572252\n	);\n	vec3 Fresnel0ToIor( vec3 fresnel0 ) {\n		vec3 sqrtF0 = sqrt( fresnel0 );\n		return ( vec3( 1.0 ) + sqrtF0 ) / ( vec3( 1.0 ) - sqrtF0 );\n	}\n	vec3 IorToFresnel0( vec3 transmittedIor, float incidentIor ) {\n		return pow2( ( transmittedIor - vec3( incidentIor ) ) / ( transmittedIor + vec3( incidentIor ) ) );\n	}\n	float IorToFresnel0( float transmittedIor, float incidentIor ) {\n		return pow2( ( transmittedIor - incidentIor ) / ( transmittedIor + incidentIor ));\n	}\n	vec3 evalSensitivity( float OPD, vec3 shift ) {\n		float phase = 2.0 * PI * OPD * 1.0e-9;\n		vec3 val = vec3( 5.4856e-13, 4.4201e-13, 5.2481e-13 );\n		vec3 pos = vec3( 1.6810e+06, 1.7953e+06, 2.2084e+06 );\n		vec3 var = vec3( 4.3278e+09, 9.3046e+09, 6.6121e+09 );\n		vec3 xyz = val * sqrt( 2.0 * PI * var ) * cos( pos * phase + shift ) * exp( - pow2( phase ) * var );\n		xyz.x += 9.7470e-14 * sqrt( 2.0 * PI * 4.5282e+09 ) * cos( 2.2399e+06 * phase + shift[ 0 ] ) * exp( - 4.5282e+09 * pow2( phase ) );\n		xyz /= 1.0685e-7;\n		vec3 rgb = XYZ_TO_REC709 * xyz;\n		return rgb;\n	}\n	vec3 evalIridescence( float outsideIOR, float eta2, float cosTheta1, float thinFilmThickness, vec3 baseF0 ) {\n		vec3 I;\n		float iridescenceIOR = mix( outsideIOR, eta2, smoothstep( 0.0, 0.03, thinFilmThickness ) );\n		float sinTheta2Sq = pow2( outsideIOR / iridescenceIOR ) * ( 1.0 - pow2( cosTheta1 ) );\n		float cosTheta2Sq = 1.0 - sinTheta2Sq;\n		if ( cosTheta2Sq < 0.0 ) {\n			return vec3( 1.0 );\n		}\n		float cosTheta2 = sqrt( cosTheta2Sq );\n		float R0 = IorToFresnel0( iridescenceIOR, outsideIOR );\n		float R12 = F_Schlick( R0, 1.0, cosTheta1 );\n		float T121 = 1.0 - R12;\n		float phi12 = 0.0;\n		if ( iridescenceIOR < outsideIOR ) phi12 = PI;\n		float phi21 = PI - phi12;\n		vec3 baseIOR = Fresnel0ToIor( clamp( baseF0, 0.0, 0.9999 ) );		vec3 R1 = IorToFresnel0( baseIOR, iridescenceIOR );\n		vec3 R23 = F_Schlick( R1, 1.0, cosTheta2 );\n		vec3 phi23 = vec3( 0.0 );\n		if ( baseIOR[ 0 ] < iridescenceIOR ) phi23[ 0 ] = PI;\n		if ( baseIOR[ 1 ] < iridescenceIOR ) phi23[ 1 ] = PI;\n		if ( baseIOR[ 2 ] < iridescenceIOR ) phi23[ 2 ] = PI;\n		float OPD = 2.0 * iridescenceIOR * thinFilmThickness * cosTheta2;\n		vec3 phi = vec3( phi21 ) + phi23;\n		vec3 R123 = clamp( R12 * R23, 1e-5, 0.9999 );\n		vec3 r123 = sqrt( R123 );\n		vec3 Rs = pow2( T121 ) * R23 / ( vec3( 1.0 ) - R123 );\n		vec3 C0 = R12 + Rs;\n		I = C0;\n		vec3 Cm = Rs - T121;\n		for ( int m = 1; m <= 2; ++ m ) {\n			Cm *= r123;\n			vec3 Sm = 2.0 * evalSensitivity( float( m ) * OPD, float( m ) * phi );\n			I += Cm * Sm;\n		}\n		return max( I, vec3( 0.0 ) );\n	}\n#endif";
  var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n	uniform sampler2D bumpMap;\n	uniform float bumpScale;\n	vec2 dHdxy_fwd() {\n		vec2 dSTdx = dFdx( vBumpMapUv );\n		vec2 dSTdy = dFdy( vBumpMapUv );\n		float Hll = bumpScale * texture2D( bumpMap, vBumpMapUv ).x;\n		float dBx = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdx ).x - Hll;\n		float dBy = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdy ).x - Hll;\n		return vec2( dBx, dBy );\n	}\n	vec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\n		vec3 vSigmaX = normalize( dFdx( surf_pos.xyz ) );\n		vec3 vSigmaY = normalize( dFdy( surf_pos.xyz ) );\n		vec3 vN = surf_norm;\n		vec3 R1 = cross( vSigmaY, vN );\n		vec3 R2 = cross( vN, vSigmaX );\n		float fDet = dot( vSigmaX, R1 ) * faceDirection;\n		vec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n		return normalize( abs( fDet ) * surf_norm - vGrad );\n	}\n#endif";
  var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n	vec4 plane;\n	#pragma unroll_loop_start\n	for ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n		plane = clippingPlanes[ i ];\n		if ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n	}\n	#pragma unroll_loop_end\n	#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n		bool clipped = true;\n		#pragma unroll_loop_start\n		for ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n			plane = clippingPlanes[ i ];\n			clipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n		}\n		#pragma unroll_loop_end\n		if ( clipped ) discard;\n	#endif\n#endif";
  var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n	varying vec3 vClipPosition;\n	uniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";
  var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n	varying vec3 vClipPosition;\n#endif";
  var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n	vClipPosition = - mvPosition.xyz;\n#endif";
  var color_fragment = "#if defined( USE_COLOR_ALPHA )\n	diffuseColor *= vColor;\n#elif defined( USE_COLOR )\n	diffuseColor.rgb *= vColor;\n#endif";
  var color_pars_fragment = "#if defined( USE_COLOR_ALPHA )\n	varying vec4 vColor;\n#elif defined( USE_COLOR )\n	varying vec3 vColor;\n#endif";
  var color_pars_vertex = "#if defined( USE_COLOR_ALPHA )\n	varying vec4 vColor;\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n	varying vec3 vColor;\n#endif";
  var color_vertex = "#if defined( USE_COLOR_ALPHA )\n	vColor = vec4( 1.0 );\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n	vColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n	vColor *= color;\n#endif\n#ifdef USE_INSTANCING_COLOR\n	vColor.xyz *= instanceColor.xyz;\n#endif";
  var common = "#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement( a ) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nvec3 pow2( const in vec3 x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat max3( const in vec3 v ) { return max( max( v.x, v.y ), v.z ); }\nfloat average( const in vec3 v ) { return dot( v, vec3( 0.3333333 ) ); }\nhighp float rand( const in vec2 uv ) {\n	const highp float a = 12.9898, b = 78.233, c = 43758.5453;\n	highp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n	return fract( sin( sn ) * c );\n}\n#ifdef HIGH_PRECISION\n	float precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n	float precisionSafeLength( vec3 v ) {\n		float maxComponent = max3( abs( v ) );\n		return length( v / maxComponent ) * maxComponent;\n	}\n#endif\nstruct IncidentLight {\n	vec3 color;\n	vec3 direction;\n	bool visible;\n};\nstruct ReflectedLight {\n	vec3 directDiffuse;\n	vec3 directSpecular;\n	vec3 indirectDiffuse;\n	vec3 indirectSpecular;\n};\n#ifdef USE_ALPHAHASH\n	varying vec3 vPosition;\n#endif\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n	return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n	return normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nmat3 transposeMat3( const in mat3 m ) {\n	mat3 tmp;\n	tmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n	tmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n	tmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n	return tmp;\n}\nfloat luminance( const in vec3 rgb ) {\n	const vec3 weights = vec3( 0.2126729, 0.7151522, 0.0721750 );\n	return dot( weights, rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n	return m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n	float u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n	float v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n	return vec2( u, v );\n}\nvec3 BRDF_Lambert( const in vec3 diffuseColor ) {\n	return RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 f0, const in float f90, const in float dotVH ) {\n	float fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\n	return f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\n}\nfloat F_Schlick( const in float f0, const in float f90, const in float dotVH ) {\n	float fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\n	return f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\n} // validated";
  var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n	#define cubeUV_minMipLevel 4.0\n	#define cubeUV_minTileSize 16.0\n	float getFace( vec3 direction ) {\n		vec3 absDirection = abs( direction );\n		float face = - 1.0;\n		if ( absDirection.x > absDirection.z ) {\n			if ( absDirection.x > absDirection.y )\n				face = direction.x > 0.0 ? 0.0 : 3.0;\n			else\n				face = direction.y > 0.0 ? 1.0 : 4.0;\n		} else {\n			if ( absDirection.z > absDirection.y )\n				face = direction.z > 0.0 ? 2.0 : 5.0;\n			else\n				face = direction.y > 0.0 ? 1.0 : 4.0;\n		}\n		return face;\n	}\n	vec2 getUV( vec3 direction, float face ) {\n		vec2 uv;\n		if ( face == 0.0 ) {\n			uv = vec2( direction.z, direction.y ) / abs( direction.x );\n		} else if ( face == 1.0 ) {\n			uv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n		} else if ( face == 2.0 ) {\n			uv = vec2( - direction.x, direction.y ) / abs( direction.z );\n		} else if ( face == 3.0 ) {\n			uv = vec2( - direction.z, direction.y ) / abs( direction.x );\n		} else if ( face == 4.0 ) {\n			uv = vec2( - direction.x, direction.z ) / abs( direction.y );\n		} else {\n			uv = vec2( direction.x, direction.y ) / abs( direction.z );\n		}\n		return 0.5 * ( uv + 1.0 );\n	}\n	vec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n		float face = getFace( direction );\n		float filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n		mipInt = max( mipInt, cubeUV_minMipLevel );\n		float faceSize = exp2( mipInt );\n		highp vec2 uv = getUV( direction, face ) * ( faceSize - 2.0 ) + 1.0;\n		if ( face > 2.0 ) {\n			uv.y += faceSize;\n			face -= 3.0;\n		}\n		uv.x += face * faceSize;\n		uv.x += filterInt * 3.0 * cubeUV_minTileSize;\n		uv.y += 4.0 * ( exp2( CUBEUV_MAX_MIP ) - faceSize );\n		uv.x *= CUBEUV_TEXEL_WIDTH;\n		uv.y *= CUBEUV_TEXEL_HEIGHT;\n		#ifdef texture2DGradEXT\n			return texture2DGradEXT( envMap, uv, vec2( 0.0 ), vec2( 0.0 ) ).rgb;\n		#else\n			return texture2D( envMap, uv ).rgb;\n		#endif\n	}\n	#define cubeUV_r0 1.0\n	#define cubeUV_m0 - 2.0\n	#define cubeUV_r1 0.8\n	#define cubeUV_m1 - 1.0\n	#define cubeUV_r4 0.4\n	#define cubeUV_m4 2.0\n	#define cubeUV_r5 0.305\n	#define cubeUV_m5 3.0\n	#define cubeUV_r6 0.21\n	#define cubeUV_m6 4.0\n	float roughnessToMip( float roughness ) {\n		float mip = 0.0;\n		if ( roughness >= cubeUV_r1 ) {\n			mip = ( cubeUV_r0 - roughness ) * ( cubeUV_m1 - cubeUV_m0 ) / ( cubeUV_r0 - cubeUV_r1 ) + cubeUV_m0;\n		} else if ( roughness >= cubeUV_r4 ) {\n			mip = ( cubeUV_r1 - roughness ) * ( cubeUV_m4 - cubeUV_m1 ) / ( cubeUV_r1 - cubeUV_r4 ) + cubeUV_m1;\n		} else if ( roughness >= cubeUV_r5 ) {\n			mip = ( cubeUV_r4 - roughness ) * ( cubeUV_m5 - cubeUV_m4 ) / ( cubeUV_r4 - cubeUV_r5 ) + cubeUV_m4;\n		} else if ( roughness >= cubeUV_r6 ) {\n			mip = ( cubeUV_r5 - roughness ) * ( cubeUV_m6 - cubeUV_m5 ) / ( cubeUV_r5 - cubeUV_r6 ) + cubeUV_m5;\n		} else {\n			mip = - 2.0 * log2( 1.16 * roughness );		}\n		return mip;\n	}\n	vec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n		float mip = clamp( roughnessToMip( roughness ), cubeUV_m0, CUBEUV_MAX_MIP );\n		float mipF = fract( mip );\n		float mipInt = floor( mip );\n		vec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n		if ( mipF == 0.0 ) {\n			return vec4( color0, 1.0 );\n		} else {\n			vec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n			return vec4( mix( color0, color1, mipF ), 1.0 );\n		}\n	}\n#endif";
  var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_TANGENT\n	vec3 transformedTangent = objectTangent;\n#endif\n#ifdef USE_BATCHING\n	mat3 bm = mat3( batchingMatrix );\n	transformedNormal /= vec3( dot( bm[ 0 ], bm[ 0 ] ), dot( bm[ 1 ], bm[ 1 ] ), dot( bm[ 2 ], bm[ 2 ] ) );\n	transformedNormal = bm * transformedNormal;\n	#ifdef USE_TANGENT\n		transformedTangent = bm * transformedTangent;\n	#endif\n#endif\n#ifdef USE_INSTANCING\n	mat3 im = mat3( instanceMatrix );\n	transformedNormal /= vec3( dot( im[ 0 ], im[ 0 ] ), dot( im[ 1 ], im[ 1 ] ), dot( im[ 2 ], im[ 2 ] ) );\n	transformedNormal = im * transformedNormal;\n	#ifdef USE_TANGENT\n		transformedTangent = im * transformedTangent;\n	#endif\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n	transformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n	transformedTangent = ( modelViewMatrix * vec4( transformedTangent, 0.0 ) ).xyz;\n	#ifdef FLIP_SIDED\n		transformedTangent = - transformedTangent;\n	#endif\n#endif";
  var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n	uniform sampler2D displacementMap;\n	uniform float displacementScale;\n	uniform float displacementBias;\n#endif";
  var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n	transformed += normalize( objectNormal ) * ( texture2D( displacementMap, vDisplacementMapUv ).x * displacementScale + displacementBias );\n#endif";
  var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n	vec4 emissiveColor = texture2D( emissiveMap, vEmissiveMapUv );\n	totalEmissiveRadiance *= emissiveColor.rgb;\n#endif";
  var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n	uniform sampler2D emissiveMap;\n#endif";
  var colorspace_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";
  var colorspace_pars_fragment = "\nconst mat3 LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 = mat3(\n	vec3( 0.8224621, 0.177538, 0.0 ),\n	vec3( 0.0331941, 0.9668058, 0.0 ),\n	vec3( 0.0170827, 0.0723974, 0.9105199 )\n);\nconst mat3 LINEAR_DISPLAY_P3_TO_LINEAR_SRGB = mat3(\n	vec3( 1.2249401, - 0.2249404, 0.0 ),\n	vec3( - 0.0420569, 1.0420571, 0.0 ),\n	vec3( - 0.0196376, - 0.0786361, 1.0982735 )\n);\nvec4 LinearSRGBToLinearDisplayP3( in vec4 value ) {\n	return vec4( value.rgb * LINEAR_SRGB_TO_LINEAR_DISPLAY_P3, value.a );\n}\nvec4 LinearDisplayP3ToLinearSRGB( in vec4 value ) {\n	return vec4( value.rgb * LINEAR_DISPLAY_P3_TO_LINEAR_SRGB, value.a );\n}\nvec4 LinearTransferOETF( in vec4 value ) {\n	return value;\n}\nvec4 sRGBTransferOETF( in vec4 value ) {\n	return vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}\nvec4 LinearToLinear( in vec4 value ) {\n	return value;\n}\nvec4 LinearTosRGB( in vec4 value ) {\n	return sRGBTransferOETF( value );\n}";
  var envmap_fragment = "#ifdef USE_ENVMAP\n	#ifdef ENV_WORLDPOS\n		vec3 cameraToFrag;\n		if ( isOrthographic ) {\n			cameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n		} else {\n			cameraToFrag = normalize( vWorldPosition - cameraPosition );\n		}\n		vec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n		#ifdef ENVMAP_MODE_REFLECTION\n			vec3 reflectVec = reflect( cameraToFrag, worldNormal );\n		#else\n			vec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n		#endif\n	#else\n		vec3 reflectVec = vReflect;\n	#endif\n	#ifdef ENVMAP_TYPE_CUBE\n		vec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n	#else\n		vec4 envColor = vec4( 0.0 );\n	#endif\n	#ifdef ENVMAP_BLENDING_MULTIPLY\n		outgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n	#elif defined( ENVMAP_BLENDING_MIX )\n		outgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n	#elif defined( ENVMAP_BLENDING_ADD )\n		outgoingLight += envColor.xyz * specularStrength * reflectivity;\n	#endif\n#endif";
  var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n	uniform float envMapIntensity;\n	uniform float flipEnvMap;\n	#ifdef ENVMAP_TYPE_CUBE\n		uniform samplerCube envMap;\n	#else\n		uniform sampler2D envMap;\n	#endif\n	\n#endif";
  var envmap_pars_fragment = "#ifdef USE_ENVMAP\n	uniform float reflectivity;\n	#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\n		#define ENV_WORLDPOS\n	#endif\n	#ifdef ENV_WORLDPOS\n		varying vec3 vWorldPosition;\n		uniform float refractionRatio;\n	#else\n		varying vec3 vReflect;\n	#endif\n#endif";
  var envmap_pars_vertex = "#ifdef USE_ENVMAP\n	#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\n		#define ENV_WORLDPOS\n	#endif\n	#ifdef ENV_WORLDPOS\n		\n		varying vec3 vWorldPosition;\n	#else\n		varying vec3 vReflect;\n		uniform float refractionRatio;\n	#endif\n#endif";
  var envmap_vertex = "#ifdef USE_ENVMAP\n	#ifdef ENV_WORLDPOS\n		vWorldPosition = worldPosition.xyz;\n	#else\n		vec3 cameraToVertex;\n		if ( isOrthographic ) {\n			cameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n		} else {\n			cameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n		}\n		vec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n		#ifdef ENVMAP_MODE_REFLECTION\n			vReflect = reflect( cameraToVertex, worldNormal );\n		#else\n			vReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n		#endif\n	#endif\n#endif";
  var fog_vertex = "#ifdef USE_FOG\n	vFogDepth = - mvPosition.z;\n#endif";
  var fog_pars_vertex = "#ifdef USE_FOG\n	varying float vFogDepth;\n#endif";
  var fog_fragment = "#ifdef USE_FOG\n	#ifdef FOG_EXP2\n		float fogFactor = 1.0 - exp( - fogDensity * fogDensity * vFogDepth * vFogDepth );\n	#else\n		float fogFactor = smoothstep( fogNear, fogFar, vFogDepth );\n	#endif\n	gl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";
  var fog_pars_fragment = "#ifdef USE_FOG\n	uniform vec3 fogColor;\n	varying float vFogDepth;\n	#ifdef FOG_EXP2\n		uniform float fogDensity;\n	#else\n		uniform float fogNear;\n		uniform float fogFar;\n	#endif\n#endif";
  var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n	uniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n	float dotNL = dot( normal, lightDirection );\n	vec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n	#ifdef USE_GRADIENTMAP\n		return vec3( texture2D( gradientMap, coord ).r );\n	#else\n		vec2 fw = fwidth( coord ) * 0.5;\n		return mix( vec3( 0.7 ), vec3( 1.0 ), smoothstep( 0.7 - fw.x, 0.7 + fw.x, coord.x ) );\n	#endif\n}";
  var lightmap_fragment = "#ifdef USE_LIGHTMAP\n	vec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\n	vec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\n	reflectedLight.indirectDiffuse += lightMapIrradiance;\n#endif";
  var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n	uniform sampler2D lightMap;\n	uniform float lightMapIntensity;\n#endif";
  var lights_lambert_fragment = "LambertMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularStrength = specularStrength;";
  var lights_lambert_pars_fragment = "varying vec3 vViewPosition;\nstruct LambertMaterial {\n	vec3 diffuseColor;\n	float specularStrength;\n};\nvoid RE_Direct_Lambert( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {\n	float dotNL = saturate( dot( geometryNormal, directLight.direction ) );\n	vec3 irradiance = dotNL * directLight.color;\n	reflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Lambert( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {\n	reflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct				RE_Direct_Lambert\n#define RE_IndirectDiffuse		RE_IndirectDiffuse_Lambert";
  var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\n#if defined( USE_LIGHT_PROBES )\n	uniform vec3 lightProbe[ 9 ];\n#endif\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n	float x = normal.x, y = normal.y, z = normal.z;\n	vec3 result = shCoefficients[ 0 ] * 0.886227;\n	result += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n	result += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n	result += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n	result += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n	result += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n	result += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n	result += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n	result += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n	return result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in vec3 normal ) {\n	vec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n	vec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n	return irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n	vec3 irradiance = ambientLightColor;\n	return irradiance;\n}\nfloat getDistanceAttenuation( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n	#if defined ( LEGACY_LIGHTS )\n		if ( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n			return pow( saturate( - lightDistance / cutoffDistance + 1.0 ), decayExponent );\n		}\n		return 1.0;\n	#else\n		float distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n		if ( cutoffDistance > 0.0 ) {\n			distanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n		}\n		return distanceFalloff;\n	#endif\n}\nfloat getSpotAttenuation( const in float coneCosine, const in float penumbraCosine, const in float angleCosine ) {\n	return smoothstep( coneCosine, penumbraCosine, angleCosine );\n}\n#if NUM_DIR_LIGHTS > 0\n	struct DirectionalLight {\n		vec3 direction;\n		vec3 color;\n	};\n	uniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n	void getDirectionalLightInfo( const in DirectionalLight directionalLight, out IncidentLight light ) {\n		light.color = directionalLight.color;\n		light.direction = directionalLight.direction;\n		light.visible = true;\n	}\n#endif\n#if NUM_POINT_LIGHTS > 0\n	struct PointLight {\n		vec3 position;\n		vec3 color;\n		float distance;\n		float decay;\n	};\n	uniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n	void getPointLightInfo( const in PointLight pointLight, const in vec3 geometryPosition, out IncidentLight light ) {\n		vec3 lVector = pointLight.position - geometryPosition;\n		light.direction = normalize( lVector );\n		float lightDistance = length( lVector );\n		light.color = pointLight.color;\n		light.color *= getDistanceAttenuation( lightDistance, pointLight.distance, pointLight.decay );\n		light.visible = ( light.color != vec3( 0.0 ) );\n	}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n	struct SpotLight {\n		vec3 position;\n		vec3 direction;\n		vec3 color;\n		float distance;\n		float decay;\n		float coneCos;\n		float penumbraCos;\n	};\n	uniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n	void getSpotLightInfo( const in SpotLight spotLight, const in vec3 geometryPosition, out IncidentLight light ) {\n		vec3 lVector = spotLight.position - geometryPosition;\n		light.direction = normalize( lVector );\n		float angleCos = dot( light.direction, spotLight.direction );\n		float spotAttenuation = getSpotAttenuation( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n		if ( spotAttenuation > 0.0 ) {\n			float lightDistance = length( lVector );\n			light.color = spotLight.color * spotAttenuation;\n			light.color *= getDistanceAttenuation( lightDistance, spotLight.distance, spotLight.decay );\n			light.visible = ( light.color != vec3( 0.0 ) );\n		} else {\n			light.color = vec3( 0.0 );\n			light.visible = false;\n		}\n	}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n	struct RectAreaLight {\n		vec3 color;\n		vec3 position;\n		vec3 halfWidth;\n		vec3 halfHeight;\n	};\n	uniform sampler2D ltc_1;	uniform sampler2D ltc_2;\n	uniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n	struct HemisphereLight {\n		vec3 direction;\n		vec3 skyColor;\n		vec3 groundColor;\n	};\n	uniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n	vec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in vec3 normal ) {\n		float dotNL = dot( normal, hemiLight.direction );\n		float hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n		vec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n		return irradiance;\n	}\n#endif";
  var envmap_physical_pars_fragment = "#ifdef USE_ENVMAP\n	vec3 getIBLIrradiance( const in vec3 normal ) {\n		#ifdef ENVMAP_TYPE_CUBE_UV\n			vec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n			vec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n			return PI * envMapColor.rgb * envMapIntensity;\n		#else\n			return vec3( 0.0 );\n		#endif\n	}\n	vec3 getIBLRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness ) {\n		#ifdef ENVMAP_TYPE_CUBE_UV\n			vec3 reflectVec = reflect( - viewDir, normal );\n			reflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n			reflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n			vec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n			return envMapColor.rgb * envMapIntensity;\n		#else\n			return vec3( 0.0 );\n		#endif\n	}\n	#ifdef USE_ANISOTROPY\n		vec3 getIBLAnisotropyRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in vec3 bitangent, const in float anisotropy ) {\n			#ifdef ENVMAP_TYPE_CUBE_UV\n				vec3 bentNormal = cross( bitangent, viewDir );\n				bentNormal = normalize( cross( bentNormal, bitangent ) );\n				bentNormal = normalize( mix( bentNormal, normal, pow2( pow2( 1.0 - anisotropy * ( 1.0 - roughness ) ) ) ) );\n				return getIBLRadiance( viewDir, bentNormal, roughness );\n			#else\n				return vec3( 0.0 );\n			#endif\n		}\n	#endif\n#endif";
  var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";
  var lights_toon_pars_fragment = "varying vec3 vViewPosition;\nstruct ToonMaterial {\n	vec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n	vec3 irradiance = getGradientIrradiance( geometryNormal, directLight.direction ) * directLight.color;\n	reflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n	reflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct				RE_Direct_Toon\n#define RE_IndirectDiffuse		RE_IndirectDiffuse_Toon";
  var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";
  var lights_phong_pars_fragment = "varying vec3 vViewPosition;\nstruct BlinnPhongMaterial {\n	vec3 diffuseColor;\n	vec3 specularColor;\n	float specularShininess;\n	float specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n	float dotNL = saturate( dot( geometryNormal, directLight.direction ) );\n	vec3 irradiance = dotNL * directLight.color;\n	reflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n	reflectedLight.directSpecular += irradiance * BRDF_BlinnPhong( directLight.direction, geometryViewDir, geometryNormal, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n	reflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct				RE_Direct_BlinnPhong\n#define RE_IndirectDiffuse		RE_IndirectDiffuse_BlinnPhong";
  var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( nonPerturbedNormal ) ), abs( dFdy( nonPerturbedNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.roughness = max( roughnessFactor, 0.0525 );material.roughness += geometryRoughness;\nmaterial.roughness = min( material.roughness, 1.0 );\n#ifdef IOR\n	material.ior = ior;\n	#ifdef USE_SPECULAR\n		float specularIntensityFactor = specularIntensity;\n		vec3 specularColorFactor = specularColor;\n		#ifdef USE_SPECULAR_COLORMAP\n			specularColorFactor *= texture2D( specularColorMap, vSpecularColorMapUv ).rgb;\n		#endif\n		#ifdef USE_SPECULAR_INTENSITYMAP\n			specularIntensityFactor *= texture2D( specularIntensityMap, vSpecularIntensityMapUv ).a;\n		#endif\n		material.specularF90 = mix( specularIntensityFactor, 1.0, metalnessFactor );\n	#else\n		float specularIntensityFactor = 1.0;\n		vec3 specularColorFactor = vec3( 1.0 );\n		material.specularF90 = 1.0;\n	#endif\n	material.specularColor = mix( min( pow2( ( material.ior - 1.0 ) / ( material.ior + 1.0 ) ) * specularColorFactor, vec3( 1.0 ) ) * specularIntensityFactor, diffuseColor.rgb, metalnessFactor );\n#else\n	material.specularColor = mix( vec3( 0.04 ), diffuseColor.rgb, metalnessFactor );\n	material.specularF90 = 1.0;\n#endif\n#ifdef USE_CLEARCOAT\n	material.clearcoat = clearcoat;\n	material.clearcoatRoughness = clearcoatRoughness;\n	material.clearcoatF0 = vec3( 0.04 );\n	material.clearcoatF90 = 1.0;\n	#ifdef USE_CLEARCOATMAP\n		material.clearcoat *= texture2D( clearcoatMap, vClearcoatMapUv ).x;\n	#endif\n	#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n		material.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vClearcoatRoughnessMapUv ).y;\n	#endif\n	material.clearcoat = saturate( material.clearcoat );	material.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n	material.clearcoatRoughness += geometryRoughness;\n	material.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_IRIDESCENCE\n	material.iridescence = iridescence;\n	material.iridescenceIOR = iridescenceIOR;\n	#ifdef USE_IRIDESCENCEMAP\n		material.iridescence *= texture2D( iridescenceMap, vIridescenceMapUv ).r;\n	#endif\n	#ifdef USE_IRIDESCENCE_THICKNESSMAP\n		material.iridescenceThickness = (iridescenceThicknessMaximum - iridescenceThicknessMinimum) * texture2D( iridescenceThicknessMap, vIridescenceThicknessMapUv ).g + iridescenceThicknessMinimum;\n	#else\n		material.iridescenceThickness = iridescenceThicknessMaximum;\n	#endif\n#endif\n#ifdef USE_SHEEN\n	material.sheenColor = sheenColor;\n	#ifdef USE_SHEEN_COLORMAP\n		material.sheenColor *= texture2D( sheenColorMap, vSheenColorMapUv ).rgb;\n	#endif\n	material.sheenRoughness = clamp( sheenRoughness, 0.07, 1.0 );\n	#ifdef USE_SHEEN_ROUGHNESSMAP\n		material.sheenRoughness *= texture2D( sheenRoughnessMap, vSheenRoughnessMapUv ).a;\n	#endif\n#endif\n#ifdef USE_ANISOTROPY\n	#ifdef USE_ANISOTROPYMAP\n		mat2 anisotropyMat = mat2( anisotropyVector.x, anisotropyVector.y, - anisotropyVector.y, anisotropyVector.x );\n		vec3 anisotropyPolar = texture2D( anisotropyMap, vAnisotropyMapUv ).rgb;\n		vec2 anisotropyV = anisotropyMat * normalize( 2.0 * anisotropyPolar.rg - vec2( 1.0 ) ) * anisotropyPolar.b;\n	#else\n		vec2 anisotropyV = anisotropyVector;\n	#endif\n	material.anisotropy = length( anisotropyV );\n	if( material.anisotropy == 0.0 ) {\n		anisotropyV = vec2( 1.0, 0.0 );\n	} else {\n		anisotropyV /= material.anisotropy;\n		material.anisotropy = saturate( material.anisotropy );\n	}\n	material.alphaT = mix( pow2( material.roughness ), 1.0, pow2( material.anisotropy ) );\n	material.anisotropyT = tbn[ 0 ] * anisotropyV.x + tbn[ 1 ] * anisotropyV.y;\n	material.anisotropyB = tbn[ 1 ] * anisotropyV.x - tbn[ 0 ] * anisotropyV.y;\n#endif";
  var lights_physical_pars_fragment = "struct PhysicalMaterial {\n	vec3 diffuseColor;\n	float roughness;\n	vec3 specularColor;\n	float specularF90;\n	#ifdef USE_CLEARCOAT\n		float clearcoat;\n		float clearcoatRoughness;\n		vec3 clearcoatF0;\n		float clearcoatF90;\n	#endif\n	#ifdef USE_IRIDESCENCE\n		float iridescence;\n		float iridescenceIOR;\n		float iridescenceThickness;\n		vec3 iridescenceFresnel;\n		vec3 iridescenceF0;\n	#endif\n	#ifdef USE_SHEEN\n		vec3 sheenColor;\n		float sheenRoughness;\n	#endif\n	#ifdef IOR\n		float ior;\n	#endif\n	#ifdef USE_TRANSMISSION\n		float transmission;\n		float transmissionAlpha;\n		float thickness;\n		float attenuationDistance;\n		vec3 attenuationColor;\n	#endif\n	#ifdef USE_ANISOTROPY\n		float anisotropy;\n		float alphaT;\n		vec3 anisotropyT;\n		vec3 anisotropyB;\n	#endif\n};\nvec3 clearcoatSpecularDirect = vec3( 0.0 );\nvec3 clearcoatSpecularIndirect = vec3( 0.0 );\nvec3 sheenSpecularDirect = vec3( 0.0 );\nvec3 sheenSpecularIndirect = vec3(0.0 );\nvec3 Schlick_to_F0( const in vec3 f, const in float f90, const in float dotVH ) {\n    float x = clamp( 1.0 - dotVH, 0.0, 1.0 );\n    float x2 = x * x;\n    float x5 = clamp( x * x2 * x2, 0.0, 0.9999 );\n    return ( f - vec3( f90 ) * x5 ) / ( 1.0 - x5 );\n}\nfloat V_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n	float a2 = pow2( alpha );\n	float gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n	float gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n	return 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n	float a2 = pow2( alpha );\n	float denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n	return RECIPROCAL_PI * a2 / pow2( denom );\n}\n#ifdef USE_ANISOTROPY\n	float V_GGX_SmithCorrelated_Anisotropic( const in float alphaT, const in float alphaB, const in float dotTV, const in float dotBV, const in float dotTL, const in float dotBL, const in float dotNV, const in float dotNL ) {\n		float gv = dotNL * length( vec3( alphaT * dotTV, alphaB * dotBV, dotNV ) );\n		float gl = dotNV * length( vec3( alphaT * dotTL, alphaB * dotBL, dotNL ) );\n		float v = 0.5 / ( gv + gl );\n		return saturate(v);\n	}\n	float D_GGX_Anisotropic( const in float alphaT, const in float alphaB, const in float dotNH, const in float dotTH, const in float dotBH ) {\n		float a2 = alphaT * alphaB;\n		highp vec3 v = vec3( alphaB * dotTH, alphaT * dotBH, a2 * dotNH );\n		highp float v2 = dot( v, v );\n		float w2 = a2 / v2;\n		return RECIPROCAL_PI * a2 * pow2 ( w2 );\n	}\n#endif\n#ifdef USE_CLEARCOAT\n	vec3 BRDF_GGX_Clearcoat( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in PhysicalMaterial material) {\n		vec3 f0 = material.clearcoatF0;\n		float f90 = material.clearcoatF90;\n		float roughness = material.clearcoatRoughness;\n		float alpha = pow2( roughness );\n		vec3 halfDir = normalize( lightDir + viewDir );\n		float dotNL = saturate( dot( normal, lightDir ) );\n		float dotNV = saturate( dot( normal, viewDir ) );\n		float dotNH = saturate( dot( normal, halfDir ) );\n		float dotVH = saturate( dot( viewDir, halfDir ) );\n		vec3 F = F_Schlick( f0, f90, dotVH );\n		float V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n		float D = D_GGX( alpha, dotNH );\n		return F * ( V * D );\n	}\n#endif\nvec3 BRDF_GGX( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in PhysicalMaterial material ) {\n	vec3 f0 = material.specularColor;\n	float f90 = material.specularF90;\n	float roughness = material.roughness;\n	float alpha = pow2( roughness );\n	vec3 halfDir = normalize( lightDir + viewDir );\n	float dotNL = saturate( dot( normal, lightDir ) );\n	float dotNV = saturate( dot( normal, viewDir ) );\n	float dotNH = saturate( dot( normal, halfDir ) );\n	float dotVH = saturate( dot( viewDir, halfDir ) );\n	vec3 F = F_Schlick( f0, f90, dotVH );\n	#ifdef USE_IRIDESCENCE\n		F = mix( F, material.iridescenceFresnel, material.iridescence );\n	#endif\n	#ifdef USE_ANISOTROPY\n		float dotTL = dot( material.anisotropyT, lightDir );\n		float dotTV = dot( material.anisotropyT, viewDir );\n		float dotTH = dot( material.anisotropyT, halfDir );\n		float dotBL = dot( material.anisotropyB, lightDir );\n		float dotBV = dot( material.anisotropyB, viewDir );\n		float dotBH = dot( material.anisotropyB, halfDir );\n		float V = V_GGX_SmithCorrelated_Anisotropic( material.alphaT, alpha, dotTV, dotBV, dotTL, dotBL, dotNV, dotNL );\n		float D = D_GGX_Anisotropic( material.alphaT, alpha, dotNH, dotTH, dotBH );\n	#else\n		float V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n		float D = D_GGX( alpha, dotNH );\n	#endif\n	return F * ( V * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n	const float LUT_SIZE = 64.0;\n	const float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n	const float LUT_BIAS = 0.5 / LUT_SIZE;\n	float dotNV = saturate( dot( N, V ) );\n	vec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n	uv = uv * LUT_SCALE + LUT_BIAS;\n	return uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n	float l = length( f );\n	return max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n	float x = dot( v1, v2 );\n	float y = abs( x );\n	float a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n	float b = 3.4175940 + ( 4.1616724 + y ) * y;\n	float v = a / b;\n	float theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n	return cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n	vec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n	vec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n	vec3 lightNormal = cross( v1, v2 );\n	if( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n	vec3 T1, T2;\n	T1 = normalize( V - N * dot( V, N ) );\n	T2 = - cross( N, T1 );\n	mat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n	vec3 coords[ 4 ];\n	coords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n	coords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n	coords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n	coords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n	coords[ 0 ] = normalize( coords[ 0 ] );\n	coords[ 1 ] = normalize( coords[ 1 ] );\n	coords[ 2 ] = normalize( coords[ 2 ] );\n	coords[ 3 ] = normalize( coords[ 3 ] );\n	vec3 vectorFormFactor = vec3( 0.0 );\n	vectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n	vectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n	vectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n	vectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n	float result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n	return vec3( result );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie( float roughness, float dotNH ) {\n	float alpha = pow2( roughness );\n	float invAlpha = 1.0 / alpha;\n	float cos2h = dotNH * dotNH;\n	float sin2h = max( 1.0 - cos2h, 0.0078125 );\n	return ( 2.0 + invAlpha ) * pow( sin2h, invAlpha * 0.5 ) / ( 2.0 * PI );\n}\nfloat V_Neubelt( float dotNV, float dotNL ) {\n	return saturate( 1.0 / ( 4.0 * ( dotNL + dotNV - dotNL * dotNV ) ) );\n}\nvec3 BRDF_Sheen( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, vec3 sheenColor, const in float sheenRoughness ) {\n	vec3 halfDir = normalize( lightDir + viewDir );\n	float dotNL = saturate( dot( normal, lightDir ) );\n	float dotNV = saturate( dot( normal, viewDir ) );\n	float dotNH = saturate( dot( normal, halfDir ) );\n	float D = D_Charlie( sheenRoughness, dotNH );\n	float V = V_Neubelt( dotNV, dotNL );\n	return sheenColor * ( D * V );\n}\n#endif\nfloat IBLSheenBRDF( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\n	float dotNV = saturate( dot( normal, viewDir ) );\n	float r2 = roughness * roughness;\n	float a = roughness < 0.25 ? -339.2 * r2 + 161.4 * roughness - 25.9 : -8.48 * r2 + 14.3 * roughness - 9.95;\n	float b = roughness < 0.25 ? 44.0 * r2 - 23.7 * roughness + 3.26 : 1.97 * r2 - 3.27 * roughness + 0.72;\n	float DG = exp( a * dotNV + b ) + ( roughness < 0.25 ? 0.0 : 0.1 * ( roughness - 0.25 ) );\n	return saturate( DG * RECIPROCAL_PI );\n}\nvec2 DFGApprox( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\n	float dotNV = saturate( dot( normal, viewDir ) );\n	const vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n	const vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n	vec4 r = roughness * c0 + c1;\n	float a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n	vec2 fab = vec2( - 1.04, 1.04 ) * a004 + r.zw;\n	return fab;\n}\nvec3 EnvironmentBRDF( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness ) {\n	vec2 fab = DFGApprox( normal, viewDir, roughness );\n	return specularColor * fab.x + specularF90 * fab.y;\n}\n#ifdef USE_IRIDESCENCE\nvoid computeMultiscatteringIridescence( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float iridescence, const in vec3 iridescenceF0, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n#else\nvoid computeMultiscattering( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n#endif\n	vec2 fab = DFGApprox( normal, viewDir, roughness );\n	#ifdef USE_IRIDESCENCE\n		vec3 Fr = mix( specularColor, iridescenceF0, iridescence );\n	#else\n		vec3 Fr = specularColor;\n	#endif\n	vec3 FssEss = Fr * fab.x + specularF90 * fab.y;\n	float Ess = fab.x + fab.y;\n	float Ems = 1.0 - Ess;\n	vec3 Favg = Fr + ( 1.0 - Fr ) * 0.047619;	vec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n	singleScatter += FssEss;\n	multiScatter += Fms * Ems;\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n	void RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n		vec3 normal = geometryNormal;\n		vec3 viewDir = geometryViewDir;\n		vec3 position = geometryPosition;\n		vec3 lightPos = rectAreaLight.position;\n		vec3 halfWidth = rectAreaLight.halfWidth;\n		vec3 halfHeight = rectAreaLight.halfHeight;\n		vec3 lightColor = rectAreaLight.color;\n		float roughness = material.roughness;\n		vec3 rectCoords[ 4 ];\n		rectCoords[ 0 ] = lightPos + halfWidth - halfHeight;		rectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n		rectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n		rectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n		vec2 uv = LTC_Uv( normal, viewDir, roughness );\n		vec4 t1 = texture2D( ltc_1, uv );\n		vec4 t2 = texture2D( ltc_2, uv );\n		mat3 mInv = mat3(\n			vec3( t1.x, 0, t1.y ),\n			vec3(    0, 1,    0 ),\n			vec3( t1.z, 0, t1.w )\n		);\n		vec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n		reflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n		reflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n	}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n	float dotNL = saturate( dot( geometryNormal, directLight.direction ) );\n	vec3 irradiance = dotNL * directLight.color;\n	#ifdef USE_CLEARCOAT\n		float dotNLcc = saturate( dot( geometryClearcoatNormal, directLight.direction ) );\n		vec3 ccIrradiance = dotNLcc * directLight.color;\n		clearcoatSpecularDirect += ccIrradiance * BRDF_GGX_Clearcoat( directLight.direction, geometryViewDir, geometryClearcoatNormal, material );\n	#endif\n	#ifdef USE_SHEEN\n		sheenSpecularDirect += irradiance * BRDF_Sheen( directLight.direction, geometryViewDir, geometryNormal, material.sheenColor, material.sheenRoughness );\n	#endif\n	reflectedLight.directSpecular += irradiance * BRDF_GGX( directLight.direction, geometryViewDir, geometryNormal, material );\n	reflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n	reflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n	#ifdef USE_CLEARCOAT\n		clearcoatSpecularIndirect += clearcoatRadiance * EnvironmentBRDF( geometryClearcoatNormal, geometryViewDir, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );\n	#endif\n	#ifdef USE_SHEEN\n		sheenSpecularIndirect += irradiance * material.sheenColor * IBLSheenBRDF( geometryNormal, geometryViewDir, material.sheenRoughness );\n	#endif\n	vec3 singleScattering = vec3( 0.0 );\n	vec3 multiScattering = vec3( 0.0 );\n	vec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n	#ifdef USE_IRIDESCENCE\n		computeMultiscatteringIridescence( geometryNormal, geometryViewDir, material.specularColor, material.specularF90, material.iridescence, material.iridescenceFresnel, material.roughness, singleScattering, multiScattering );\n	#else\n		computeMultiscattering( geometryNormal, geometryViewDir, material.specularColor, material.specularF90, material.roughness, singleScattering, multiScattering );\n	#endif\n	vec3 totalScattering = singleScattering + multiScattering;\n	vec3 diffuse = material.diffuseColor * ( 1.0 - max( max( totalScattering.r, totalScattering.g ), totalScattering.b ) );\n	reflectedLight.indirectSpecular += radiance * singleScattering;\n	reflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n	reflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct				RE_Direct_Physical\n#define RE_Direct_RectArea		RE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse		RE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular		RE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n	return saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";
  var lights_fragment_begin = "\nvec3 geometryPosition = - vViewPosition;\nvec3 geometryNormal = normal;\nvec3 geometryViewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\nvec3 geometryClearcoatNormal = vec3( 0.0 );\n#ifdef USE_CLEARCOAT\n	geometryClearcoatNormal = clearcoatNormal;\n#endif\n#ifdef USE_IRIDESCENCE\n	float dotNVi = saturate( dot( normal, geometryViewDir ) );\n	if ( material.iridescenceThickness == 0.0 ) {\n		material.iridescence = 0.0;\n	} else {\n		material.iridescence = saturate( material.iridescence );\n	}\n	if ( material.iridescence > 0.0 ) {\n		material.iridescenceFresnel = evalIridescence( 1.0, material.iridescenceIOR, dotNVi, material.iridescenceThickness, material.specularColor );\n		material.iridescenceF0 = Schlick_to_F0( material.iridescenceFresnel, 1.0, dotNVi );\n	}\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n	PointLight pointLight;\n	#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n	PointLightShadow pointLightShadow;\n	#endif\n	#pragma unroll_loop_start\n	for ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n		pointLight = pointLights[ i ];\n		getPointLightInfo( pointLight, geometryPosition, directLight );\n		#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n		pointLightShadow = pointLightShadows[ i ];\n		directLight.color *= ( directLight.visible && receiveShadow ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n		#endif\n		RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n	}\n	#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n	SpotLight spotLight;\n	vec4 spotColor;\n	vec3 spotLightCoord;\n	bool inSpotLightMap;\n	#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n	SpotLightShadow spotLightShadow;\n	#endif\n	#pragma unroll_loop_start\n	for ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n		spotLight = spotLights[ i ];\n		getSpotLightInfo( spotLight, geometryPosition, directLight );\n		#if ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )\n		#define SPOT_LIGHT_MAP_INDEX UNROLLED_LOOP_INDEX\n		#elif ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n		#define SPOT_LIGHT_MAP_INDEX NUM_SPOT_LIGHT_MAPS\n		#else\n		#define SPOT_LIGHT_MAP_INDEX ( UNROLLED_LOOP_INDEX - NUM_SPOT_LIGHT_SHADOWS + NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )\n		#endif\n		#if ( SPOT_LIGHT_MAP_INDEX < NUM_SPOT_LIGHT_MAPS )\n			spotLightCoord = vSpotLightCoord[ i ].xyz / vSpotLightCoord[ i ].w;\n			inSpotLightMap = all( lessThan( abs( spotLightCoord * 2. - 1. ), vec3( 1.0 ) ) );\n			spotColor = texture2D( spotLightMap[ SPOT_LIGHT_MAP_INDEX ], spotLightCoord.xy );\n			directLight.color = inSpotLightMap ? directLight.color * spotColor.rgb : directLight.color;\n		#endif\n		#undef SPOT_LIGHT_MAP_INDEX\n		#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n		spotLightShadow = spotLightShadows[ i ];\n		directLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;\n		#endif\n		RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n	}\n	#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n	DirectionalLight directionalLight;\n	#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n	DirectionalLightShadow directionalLightShadow;\n	#endif\n	#pragma unroll_loop_start\n	for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n		directionalLight = directionalLights[ i ];\n		getDirectionalLightInfo( directionalLight, directLight );\n		#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n		directionalLightShadow = directionalLightShadows[ i ];\n		directLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n		#endif\n		RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n	}\n	#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n	RectAreaLight rectAreaLight;\n	#pragma unroll_loop_start\n	for ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n		rectAreaLight = rectAreaLights[ i ];\n		RE_Direct_RectArea( rectAreaLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n	}\n	#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n	vec3 iblIrradiance = vec3( 0.0 );\n	vec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n	#if defined( USE_LIGHT_PROBES )\n		irradiance += getLightProbeIrradiance( lightProbe, geometryNormal );\n	#endif\n	#if ( NUM_HEMI_LIGHTS > 0 )\n		#pragma unroll_loop_start\n		for ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n			irradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometryNormal );\n		}\n		#pragma unroll_loop_end\n	#endif\n#endif\n#if defined( RE_IndirectSpecular )\n	vec3 radiance = vec3( 0.0 );\n	vec3 clearcoatRadiance = vec3( 0.0 );\n#endif";
  var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n	#ifdef USE_LIGHTMAP\n		vec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\n		vec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\n		irradiance += lightMapIrradiance;\n	#endif\n	#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n		iblIrradiance += getIBLIrradiance( geometryNormal );\n	#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n	#ifdef USE_ANISOTROPY\n		radiance += getIBLAnisotropyRadiance( geometryViewDir, geometryNormal, material.roughness, material.anisotropyB, material.anisotropy );\n	#else\n		radiance += getIBLRadiance( geometryViewDir, geometryNormal, material.roughness );\n	#endif\n	#ifdef USE_CLEARCOAT\n		clearcoatRadiance += getIBLRadiance( geometryViewDir, geometryClearcoatNormal, material.clearcoatRoughness );\n	#endif\n#endif";
  var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n	RE_IndirectDiffuse( irradiance, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n	RE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n#endif";
  var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n	gl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";
  var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n	uniform float logDepthBufFC;\n	varying float vFragDepth;\n	varying float vIsPerspective;\n#endif";
  var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n	#ifdef USE_LOGDEPTHBUF_EXT\n		varying float vFragDepth;\n		varying float vIsPerspective;\n	#else\n		uniform float logDepthBufFC;\n	#endif\n#endif";
  var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n	#ifdef USE_LOGDEPTHBUF_EXT\n		vFragDepth = 1.0 + gl_Position.w;\n		vIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n	#else\n		if ( isPerspectiveMatrix( projectionMatrix ) ) {\n			gl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n			gl_Position.z *= gl_Position.w;\n		}\n	#endif\n#endif";
  var map_fragment = "#ifdef USE_MAP\n	vec4 sampledDiffuseColor = texture2D( map, vMapUv );\n	#ifdef DECODE_VIDEO_TEXTURE\n		sampledDiffuseColor = vec4( mix( pow( sampledDiffuseColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), sampledDiffuseColor.rgb * 0.0773993808, vec3( lessThanEqual( sampledDiffuseColor.rgb, vec3( 0.04045 ) ) ) ), sampledDiffuseColor.w );\n	\n	#endif\n	diffuseColor *= sampledDiffuseColor;\n#endif";
  var map_pars_fragment = "#ifdef USE_MAP\n	uniform sampler2D map;\n#endif";
  var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n	#if defined( USE_POINTS_UV )\n		vec2 uv = vUv;\n	#else\n		vec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n	#endif\n#endif\n#ifdef USE_MAP\n	diffuseColor *= texture2D( map, uv );\n#endif\n#ifdef USE_ALPHAMAP\n	diffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";
  var map_particle_pars_fragment = "#if defined( USE_POINTS_UV )\n	varying vec2 vUv;\n#else\n	#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n		uniform mat3 uvTransform;\n	#endif\n#endif\n#ifdef USE_MAP\n	uniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n	uniform sampler2D alphaMap;\n#endif";
  var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n	vec4 texelMetalness = texture2D( metalnessMap, vMetalnessMapUv );\n	metalnessFactor *= texelMetalness.b;\n#endif";
  var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n	uniform sampler2D metalnessMap;\n#endif";
  var morphcolor_vertex = "#if defined( USE_MORPHCOLORS ) && defined( MORPHTARGETS_TEXTURE )\n	vColor *= morphTargetBaseInfluence;\n	for ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n		#if defined( USE_COLOR_ALPHA )\n			if ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ) * morphTargetInfluences[ i ];\n		#elif defined( USE_COLOR )\n			if ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ).rgb * morphTargetInfluences[ i ];\n		#endif\n	}\n#endif";
  var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n	objectNormal *= morphTargetBaseInfluence;\n	#ifdef MORPHTARGETS_TEXTURE\n		for ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n			if ( morphTargetInfluences[ i ] != 0.0 ) objectNormal += getMorph( gl_VertexID, i, 1 ).xyz * morphTargetInfluences[ i ];\n		}\n	#else\n		objectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n		objectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n		objectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n		objectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n	#endif\n#endif";
  var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n	uniform float morphTargetBaseInfluence;\n	#ifdef MORPHTARGETS_TEXTURE\n		uniform float morphTargetInfluences[ MORPHTARGETS_COUNT ];\n		uniform sampler2DArray morphTargetsTexture;\n		uniform ivec2 morphTargetsTextureSize;\n		vec4 getMorph( const in int vertexIndex, const in int morphTargetIndex, const in int offset ) {\n			int texelIndex = vertexIndex * MORPHTARGETS_TEXTURE_STRIDE + offset;\n			int y = texelIndex / morphTargetsTextureSize.x;\n			int x = texelIndex - y * morphTargetsTextureSize.x;\n			ivec3 morphUV = ivec3( x, y, morphTargetIndex );\n			return texelFetch( morphTargetsTexture, morphUV, 0 );\n		}\n	#else\n		#ifndef USE_MORPHNORMALS\n			uniform float morphTargetInfluences[ 8 ];\n		#else\n			uniform float morphTargetInfluences[ 4 ];\n		#endif\n	#endif\n#endif";
  var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n	transformed *= morphTargetBaseInfluence;\n	#ifdef MORPHTARGETS_TEXTURE\n		for ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n			if ( morphTargetInfluences[ i ] != 0.0 ) transformed += getMorph( gl_VertexID, i, 0 ).xyz * morphTargetInfluences[ i ];\n		}\n	#else\n		transformed += morphTarget0 * morphTargetInfluences[ 0 ];\n		transformed += morphTarget1 * morphTargetInfluences[ 1 ];\n		transformed += morphTarget2 * morphTargetInfluences[ 2 ];\n		transformed += morphTarget3 * morphTargetInfluences[ 3 ];\n		#ifndef USE_MORPHNORMALS\n			transformed += morphTarget4 * morphTargetInfluences[ 4 ];\n			transformed += morphTarget5 * morphTargetInfluences[ 5 ];\n			transformed += morphTarget6 * morphTargetInfluences[ 6 ];\n			transformed += morphTarget7 * morphTargetInfluences[ 7 ];\n		#endif\n	#endif\n#endif";
  var normal_fragment_begin = "float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\n#ifdef FLAT_SHADED\n	vec3 fdx = dFdx( vViewPosition );\n	vec3 fdy = dFdy( vViewPosition );\n	vec3 normal = normalize( cross( fdx, fdy ) );\n#else\n	vec3 normal = normalize( vNormal );\n	#ifdef DOUBLE_SIDED\n		normal *= faceDirection;\n	#endif\n#endif\n#if defined( USE_NORMALMAP_TANGENTSPACE ) || defined( USE_CLEARCOAT_NORMALMAP ) || defined( USE_ANISOTROPY )\n	#ifdef USE_TANGENT\n		mat3 tbn = mat3( normalize( vTangent ), normalize( vBitangent ), normal );\n	#else\n		mat3 tbn = getTangentFrame( - vViewPosition, normal,\n		#if defined( USE_NORMALMAP )\n			vNormalMapUv\n		#elif defined( USE_CLEARCOAT_NORMALMAP )\n			vClearcoatNormalMapUv\n		#else\n			vUv\n		#endif\n		);\n	#endif\n	#if defined( DOUBLE_SIDED ) && ! defined( FLAT_SHADED )\n		tbn[0] *= faceDirection;\n		tbn[1] *= faceDirection;\n	#endif\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n	#ifdef USE_TANGENT\n		mat3 tbn2 = mat3( normalize( vTangent ), normalize( vBitangent ), normal );\n	#else\n		mat3 tbn2 = getTangentFrame( - vViewPosition, normal, vClearcoatNormalMapUv );\n	#endif\n	#if defined( DOUBLE_SIDED ) && ! defined( FLAT_SHADED )\n		tbn2[0] *= faceDirection;\n		tbn2[1] *= faceDirection;\n	#endif\n#endif\nvec3 nonPerturbedNormal = normal;";
  var normal_fragment_maps = "#ifdef USE_NORMALMAP_OBJECTSPACE\n	normal = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;\n	#ifdef FLIP_SIDED\n		normal = - normal;\n	#endif\n	#ifdef DOUBLE_SIDED\n		normal = normal * faceDirection;\n	#endif\n	normal = normalize( normalMatrix * normal );\n#elif defined( USE_NORMALMAP_TANGENTSPACE )\n	vec3 mapN = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;\n	mapN.xy *= normalScale;\n	normal = normalize( tbn * mapN );\n#elif defined( USE_BUMPMAP )\n	normal = perturbNormalArb( - vViewPosition, normal, dHdxy_fwd(), faceDirection );\n#endif";
  var normal_pars_fragment = "#ifndef FLAT_SHADED\n	varying vec3 vNormal;\n	#ifdef USE_TANGENT\n		varying vec3 vTangent;\n		varying vec3 vBitangent;\n	#endif\n#endif";
  var normal_pars_vertex = "#ifndef FLAT_SHADED\n	varying vec3 vNormal;\n	#ifdef USE_TANGENT\n		varying vec3 vTangent;\n		varying vec3 vBitangent;\n	#endif\n#endif";
  var normal_vertex = "#ifndef FLAT_SHADED\n	vNormal = normalize( transformedNormal );\n	#ifdef USE_TANGENT\n		vTangent = normalize( transformedTangent );\n		vBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n	#endif\n#endif";
  var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n	uniform sampler2D normalMap;\n	uniform vec2 normalScale;\n#endif\n#ifdef USE_NORMALMAP_OBJECTSPACE\n	uniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( USE_NORMALMAP_TANGENTSPACE ) || defined ( USE_CLEARCOAT_NORMALMAP ) || defined( USE_ANISOTROPY ) )\n	mat3 getTangentFrame( vec3 eye_pos, vec3 surf_norm, vec2 uv ) {\n		vec3 q0 = dFdx( eye_pos.xyz );\n		vec3 q1 = dFdy( eye_pos.xyz );\n		vec2 st0 = dFdx( uv.st );\n		vec2 st1 = dFdy( uv.st );\n		vec3 N = surf_norm;\n		vec3 q1perp = cross( q1, N );\n		vec3 q0perp = cross( N, q0 );\n		vec3 T = q1perp * st0.x + q0perp * st1.x;\n		vec3 B = q1perp * st0.y + q0perp * st1.y;\n		float det = max( dot( T, T ), dot( B, B ) );\n		float scale = ( det == 0.0 ) ? 0.0 : inversesqrt( det );\n		return mat3( T * scale, B * scale, N );\n	}\n#endif";
  var clearcoat_normal_fragment_begin = "#ifdef USE_CLEARCOAT\n	vec3 clearcoatNormal = nonPerturbedNormal;\n#endif";
  var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n	vec3 clearcoatMapN = texture2D( clearcoatNormalMap, vClearcoatNormalMapUv ).xyz * 2.0 - 1.0;\n	clearcoatMapN.xy *= clearcoatNormalScale;\n	clearcoatNormal = normalize( tbn2 * clearcoatMapN );\n#endif";
  var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n	uniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n	uniform sampler2D clearcoatNormalMap;\n	uniform vec2 clearcoatNormalScale;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n	uniform sampler2D clearcoatRoughnessMap;\n#endif";
  var iridescence_pars_fragment = "#ifdef USE_IRIDESCENCEMAP\n	uniform sampler2D iridescenceMap;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n	uniform sampler2D iridescenceThicknessMap;\n#endif";
  var opaque_fragment = "#ifdef OPAQUE\ndiffuseColor.a = 1.0;\n#endif\n#ifdef USE_TRANSMISSION\ndiffuseColor.a *= material.transmissionAlpha;\n#endif\ngl_FragColor = vec4( outgoingLight, diffuseColor.a );";
  var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n	return normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n	return 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n	vec4 r = vec4( fract( v * PackFactors ), v );\n	r.yzw -= r.xyz * ShiftRight8;	return r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n	return dot( v, UnpackFactors );\n}\nvec2 packDepthToRG( in highp float v ) {\n	return packDepthToRGBA( v ).yx;\n}\nfloat unpackRGToDepth( const in highp vec2 v ) {\n	return unpackRGBAToDepth( vec4( v.xy, 0.0, 0.0 ) );\n}\nvec4 pack2HalfToRGBA( vec2 v ) {\n	vec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ) );\n	return vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w );\n}\nvec2 unpackRGBATo2Half( vec4 v ) {\n	return vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n	return ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float depth, const in float near, const in float far ) {\n	return depth * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n	return ( ( near + viewZ ) * far ) / ( ( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float depth, const in float near, const in float far ) {\n	return ( near * far ) / ( ( far - near ) * depth - far );\n}";
  var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n	gl_FragColor.rgb *= gl_FragColor.a;\n#endif";
  var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_BATCHING\n	mvPosition = batchingMatrix * mvPosition;\n#endif\n#ifdef USE_INSTANCING\n	mvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";
  var dithering_fragment = "#ifdef DITHERING\n	gl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";
  var dithering_pars_fragment = "#ifdef DITHERING\n	vec3 dithering( vec3 color ) {\n		float grid_position = rand( gl_FragCoord.xy );\n		vec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n		dither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n		return color + dither_shift_RGB;\n	}\n#endif";
  var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n	vec4 texelRoughness = texture2D( roughnessMap, vRoughnessMapUv );\n	roughnessFactor *= texelRoughness.g;\n#endif";
  var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n	uniform sampler2D roughnessMap;\n#endif";
  var shadowmap_pars_fragment = "#if NUM_SPOT_LIGHT_COORDS > 0\n	varying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];\n#endif\n#if NUM_SPOT_LIGHT_MAPS > 0\n	uniform sampler2D spotLightMap[ NUM_SPOT_LIGHT_MAPS ];\n#endif\n#ifdef USE_SHADOWMAP\n	#if NUM_DIR_LIGHT_SHADOWS > 0\n		uniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n		varying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n		struct DirectionalLightShadow {\n			float shadowBias;\n			float shadowNormalBias;\n			float shadowRadius;\n			vec2 shadowMapSize;\n		};\n		uniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n	#endif\n	#if NUM_SPOT_LIGHT_SHADOWS > 0\n		uniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n		struct SpotLightShadow {\n			float shadowBias;\n			float shadowNormalBias;\n			float shadowRadius;\n			vec2 shadowMapSize;\n		};\n		uniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n	#endif\n	#if NUM_POINT_LIGHT_SHADOWS > 0\n		uniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n		varying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n		struct PointLightShadow {\n			float shadowBias;\n			float shadowNormalBias;\n			float shadowRadius;\n			vec2 shadowMapSize;\n			float shadowCameraNear;\n			float shadowCameraFar;\n		};\n		uniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n	#endif\n	float texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n		return step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n	}\n	vec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n		return unpackRGBATo2Half( texture2D( shadow, uv ) );\n	}\n	float VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n		float occlusion = 1.0;\n		vec2 distribution = texture2DDistribution( shadow, uv );\n		float hard_shadow = step( compare , distribution.x );\n		if (hard_shadow != 1.0 ) {\n			float distance = compare - distribution.x ;\n			float variance = max( 0.00000, distribution.y * distribution.y );\n			float softness_probability = variance / (variance + distance * distance );			softness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );			occlusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n		}\n		return occlusion;\n	}\n	float getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n		float shadow = 1.0;\n		shadowCoord.xyz /= shadowCoord.w;\n		shadowCoord.z += shadowBias;\n		bool inFrustum = shadowCoord.x >= 0.0 && shadowCoord.x <= 1.0 && shadowCoord.y >= 0.0 && shadowCoord.y <= 1.0;\n		bool frustumTest = inFrustum && shadowCoord.z <= 1.0;\n		if ( frustumTest ) {\n		#if defined( SHADOWMAP_TYPE_PCF )\n			vec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n			float dx0 = - texelSize.x * shadowRadius;\n			float dy0 = - texelSize.y * shadowRadius;\n			float dx1 = + texelSize.x * shadowRadius;\n			float dy1 = + texelSize.y * shadowRadius;\n			float dx2 = dx0 / 2.0;\n			float dy2 = dy0 / 2.0;\n			float dx3 = dx1 / 2.0;\n			float dy3 = dy1 / 2.0;\n			shadow = (\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n			) * ( 1.0 / 17.0 );\n		#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n			vec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n			float dx = texelSize.x;\n			float dy = texelSize.y;\n			vec2 uv = shadowCoord.xy;\n			vec2 f = fract( uv * shadowMapSize + 0.5 );\n			uv -= f * texelSize;\n			shadow = (\n				texture2DCompare( shadowMap, uv, shadowCoord.z ) +\n				texture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n				mix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ),\n					 texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n					 f.x ) +\n				mix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ),\n					 texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n					 f.x ) +\n				mix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ),\n					 texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n					 f.y ) +\n				mix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ),\n					 texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n					 f.y ) +\n				mix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ),\n						  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n						  f.x ),\n					 mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ),\n						  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n						  f.x ),\n					 f.y )\n			) * ( 1.0 / 9.0 );\n		#elif defined( SHADOWMAP_TYPE_VSM )\n			shadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n		#else\n			shadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n		#endif\n		}\n		return shadow;\n	}\n	vec2 cubeToUV( vec3 v, float texelSizeY ) {\n		vec3 absV = abs( v );\n		float scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n		absV *= scaleToCube;\n		v *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n		vec2 planar = v.xy;\n		float almostATexel = 1.5 * texelSizeY;\n		float almostOne = 1.0 - almostATexel;\n		if ( absV.z >= almostOne ) {\n			if ( v.z > 0.0 )\n				planar.x = 4.0 - v.x;\n		} else if ( absV.x >= almostOne ) {\n			float signX = sign( v.x );\n			planar.x = v.z * signX + 2.0 * signX;\n		} else if ( absV.y >= almostOne ) {\n			float signY = sign( v.y );\n			planar.x = v.x + 2.0 * signY + 2.0;\n			planar.y = v.z * signY - 2.0;\n		}\n		return vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n	}\n	float getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n		vec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n		vec3 lightToPosition = shadowCoord.xyz;\n		float dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );		dp += shadowBias;\n		vec3 bd3D = normalize( lightToPosition );\n		#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n			vec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n			return (\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n			) * ( 1.0 / 9.0 );\n		#else\n			return texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n		#endif\n	}\n#endif";
  var shadowmap_pars_vertex = "#if NUM_SPOT_LIGHT_COORDS > 0\n	uniform mat4 spotLightMatrix[ NUM_SPOT_LIGHT_COORDS ];\n	varying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];\n#endif\n#ifdef USE_SHADOWMAP\n	#if NUM_DIR_LIGHT_SHADOWS > 0\n		uniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n		varying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n		struct DirectionalLightShadow {\n			float shadowBias;\n			float shadowNormalBias;\n			float shadowRadius;\n			vec2 shadowMapSize;\n		};\n		uniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n	#endif\n	#if NUM_SPOT_LIGHT_SHADOWS > 0\n		struct SpotLightShadow {\n			float shadowBias;\n			float shadowNormalBias;\n			float shadowRadius;\n			vec2 shadowMapSize;\n		};\n		uniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n	#endif\n	#if NUM_POINT_LIGHT_SHADOWS > 0\n		uniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n		varying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n		struct PointLightShadow {\n			float shadowBias;\n			float shadowNormalBias;\n			float shadowRadius;\n			vec2 shadowMapSize;\n			float shadowCameraNear;\n			float shadowCameraFar;\n		};\n		uniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n	#endif\n#endif";
  var shadowmap_vertex = "#if ( defined( USE_SHADOWMAP ) && ( NUM_DIR_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0 ) ) || ( NUM_SPOT_LIGHT_COORDS > 0 )\n	vec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n	vec4 shadowWorldPosition;\n#endif\n#if defined( USE_SHADOWMAP )\n	#if NUM_DIR_LIGHT_SHADOWS > 0\n		#pragma unroll_loop_start\n		for ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n			shadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n			vDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n		}\n		#pragma unroll_loop_end\n	#endif\n	#if NUM_POINT_LIGHT_SHADOWS > 0\n		#pragma unroll_loop_start\n		for ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n			shadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n			vPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n		}\n		#pragma unroll_loop_end\n	#endif\n#endif\n#if NUM_SPOT_LIGHT_COORDS > 0\n	#pragma unroll_loop_start\n	for ( int i = 0; i < NUM_SPOT_LIGHT_COORDS; i ++ ) {\n		shadowWorldPosition = worldPosition;\n		#if ( defined( USE_SHADOWMAP ) && UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n			shadowWorldPosition.xyz += shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias;\n		#endif\n		vSpotLightCoord[ i ] = spotLightMatrix[ i ] * shadowWorldPosition;\n	}\n	#pragma unroll_loop_end\n#endif";
  var shadowmask_pars_fragment = "float getShadowMask() {\n	float shadow = 1.0;\n	#ifdef USE_SHADOWMAP\n	#if NUM_DIR_LIGHT_SHADOWS > 0\n	DirectionalLightShadow directionalLight;\n	#pragma unroll_loop_start\n	for ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n		directionalLight = directionalLightShadows[ i ];\n		shadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n	}\n	#pragma unroll_loop_end\n	#endif\n	#if NUM_SPOT_LIGHT_SHADOWS > 0\n	SpotLightShadow spotLight;\n	#pragma unroll_loop_start\n	for ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n		spotLight = spotLightShadows[ i ];\n		shadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;\n	}\n	#pragma unroll_loop_end\n	#endif\n	#if NUM_POINT_LIGHT_SHADOWS > 0\n	PointLightShadow pointLight;\n	#pragma unroll_loop_start\n	for ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n		pointLight = pointLightShadows[ i ];\n		shadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n	}\n	#pragma unroll_loop_end\n	#endif\n	#endif\n	return shadow;\n}";
  var skinbase_vertex = "#ifdef USE_SKINNING\n	mat4 boneMatX = getBoneMatrix( skinIndex.x );\n	mat4 boneMatY = getBoneMatrix( skinIndex.y );\n	mat4 boneMatZ = getBoneMatrix( skinIndex.z );\n	mat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";
  var skinning_pars_vertex = "#ifdef USE_SKINNING\n	uniform mat4 bindMatrix;\n	uniform mat4 bindMatrixInverse;\n	uniform highp sampler2D boneTexture;\n	mat4 getBoneMatrix( const in float i ) {\n		int size = textureSize( boneTexture, 0 ).x;\n		int j = int( i ) * 4;\n		int x = j % size;\n		int y = j / size;\n		vec4 v1 = texelFetch( boneTexture, ivec2( x, y ), 0 );\n		vec4 v2 = texelFetch( boneTexture, ivec2( x + 1, y ), 0 );\n		vec4 v3 = texelFetch( boneTexture, ivec2( x + 2, y ), 0 );\n		vec4 v4 = texelFetch( boneTexture, ivec2( x + 3, y ), 0 );\n		return mat4( v1, v2, v3, v4 );\n	}\n#endif";
  var skinning_vertex = "#ifdef USE_SKINNING\n	vec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n	vec4 skinned = vec4( 0.0 );\n	skinned += boneMatX * skinVertex * skinWeight.x;\n	skinned += boneMatY * skinVertex * skinWeight.y;\n	skinned += boneMatZ * skinVertex * skinWeight.z;\n	skinned += boneMatW * skinVertex * skinWeight.w;\n	transformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";
  var skinnormal_vertex = "#ifdef USE_SKINNING\n	mat4 skinMatrix = mat4( 0.0 );\n	skinMatrix += skinWeight.x * boneMatX;\n	skinMatrix += skinWeight.y * boneMatY;\n	skinMatrix += skinWeight.z * boneMatZ;\n	skinMatrix += skinWeight.w * boneMatW;\n	skinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n	objectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n	#ifdef USE_TANGENT\n		objectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n	#endif\n#endif";
  var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n	vec4 texelSpecular = texture2D( specularMap, vSpecularMapUv );\n	specularStrength = texelSpecular.r;\n#else\n	specularStrength = 1.0;\n#endif";
  var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n	uniform sampler2D specularMap;\n#endif";
  var tonemapping_fragment = "#if defined( TONE_MAPPING )\n	gl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";
  var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n	return saturate( toneMappingExposure * color );\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n	color *= toneMappingExposure;\n	return saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n	color *= toneMappingExposure;\n	color = max( vec3( 0.0 ), color - 0.004 );\n	return pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n	vec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n	vec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n	return a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n	const mat3 ACESInputMat = mat3(\n		vec3( 0.59719, 0.07600, 0.02840 ),		vec3( 0.35458, 0.90834, 0.13383 ),\n		vec3( 0.04823, 0.01566, 0.83777 )\n	);\n	const mat3 ACESOutputMat = mat3(\n		vec3(  1.60475, -0.10208, -0.00327 ),		vec3( -0.53108,  1.10813, -0.07276 ),\n		vec3( -0.07367, -0.00605,  1.07602 )\n	);\n	color *= toneMappingExposure / 0.6;\n	color = ACESInputMat * color;\n	color = RRTAndODTFit( color );\n	color = ACESOutputMat * color;\n	return saturate( color );\n}\nconst mat3 LINEAR_REC2020_TO_LINEAR_SRGB = mat3(\n	vec3( 1.6605, - 0.1246, - 0.0182 ),\n	vec3( - 0.5876, 1.1329, - 0.1006 ),\n	vec3( - 0.0728, - 0.0083, 1.1187 )\n);\nconst mat3 LINEAR_SRGB_TO_LINEAR_REC2020 = mat3(\n	vec3( 0.6274, 0.0691, 0.0164 ),\n	vec3( 0.3293, 0.9195, 0.0880 ),\n	vec3( 0.0433, 0.0113, 0.8956 )\n);\nvec3 agxDefaultContrastApprox( vec3 x ) {\n	vec3 x2 = x * x;\n	vec3 x4 = x2 * x2;\n	return + 15.5 * x4 * x2\n		- 40.14 * x4 * x\n		+ 31.96 * x4\n		- 6.868 * x2 * x\n		+ 0.4298 * x2\n		+ 0.1191 * x\n		- 0.00232;\n}\nvec3 AgXToneMapping( vec3 color ) {\n	const mat3 AgXInsetMatrix = mat3(\n		vec3( 0.856627153315983, 0.137318972929847, 0.11189821299995 ),\n		vec3( 0.0951212405381588, 0.761241990602591, 0.0767994186031903 ),\n		vec3( 0.0482516061458583, 0.101439036467562, 0.811302368396859 )\n	);\n	const mat3 AgXOutsetMatrix = mat3(\n		vec3( 1.1271005818144368, - 0.1413297634984383, - 0.14132976349843826 ),\n		vec3( - 0.11060664309660323, 1.157823702216272, - 0.11060664309660294 ),\n		vec3( - 0.016493938717834573, - 0.016493938717834257, 1.2519364065950405 )\n	);\n	const float AgxMinEv = - 12.47393;	const float AgxMaxEv = 4.026069;\n	color = LINEAR_SRGB_TO_LINEAR_REC2020 * color;\n	color *= toneMappingExposure;\n	color = AgXInsetMatrix * color;\n	color = max( color, 1e-10 );	color = log2( color );\n	color = ( color - AgxMinEv ) / ( AgxMaxEv - AgxMinEv );\n	color = clamp( color, 0.0, 1.0 );\n	color = agxDefaultContrastApprox( color );\n	color = AgXOutsetMatrix * color;\n	color = pow( max( vec3( 0.0 ), color ), vec3( 2.2 ) );\n	color = LINEAR_REC2020_TO_LINEAR_SRGB * color;\n	return color;\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }";
  var transmission_fragment = "#ifdef USE_TRANSMISSION\n	material.transmission = transmission;\n	material.transmissionAlpha = 1.0;\n	material.thickness = thickness;\n	material.attenuationDistance = attenuationDistance;\n	material.attenuationColor = attenuationColor;\n	#ifdef USE_TRANSMISSIONMAP\n		material.transmission *= texture2D( transmissionMap, vTransmissionMapUv ).r;\n	#endif\n	#ifdef USE_THICKNESSMAP\n		material.thickness *= texture2D( thicknessMap, vThicknessMapUv ).g;\n	#endif\n	vec3 pos = vWorldPosition;\n	vec3 v = normalize( cameraPosition - pos );\n	vec3 n = inverseTransformDirection( normal, viewMatrix );\n	vec4 transmitted = getIBLVolumeRefraction(\n		n, v, material.roughness, material.diffuseColor, material.specularColor, material.specularF90,\n		pos, modelMatrix, viewMatrix, projectionMatrix, material.ior, material.thickness,\n		material.attenuationColor, material.attenuationDistance );\n	material.transmissionAlpha = mix( material.transmissionAlpha, transmitted.a, material.transmission );\n	totalDiffuse = mix( totalDiffuse, transmitted.rgb, material.transmission );\n#endif";
  var transmission_pars_fragment = "#ifdef USE_TRANSMISSION\n	uniform float transmission;\n	uniform float thickness;\n	uniform float attenuationDistance;\n	uniform vec3 attenuationColor;\n	#ifdef USE_TRANSMISSIONMAP\n		uniform sampler2D transmissionMap;\n	#endif\n	#ifdef USE_THICKNESSMAP\n		uniform sampler2D thicknessMap;\n	#endif\n	uniform vec2 transmissionSamplerSize;\n	uniform sampler2D transmissionSamplerMap;\n	uniform mat4 modelMatrix;\n	uniform mat4 projectionMatrix;\n	varying vec3 vWorldPosition;\n	float w0( float a ) {\n		return ( 1.0 / 6.0 ) * ( a * ( a * ( - a + 3.0 ) - 3.0 ) + 1.0 );\n	}\n	float w1( float a ) {\n		return ( 1.0 / 6.0 ) * ( a *  a * ( 3.0 * a - 6.0 ) + 4.0 );\n	}\n	float w2( float a ){\n		return ( 1.0 / 6.0 ) * ( a * ( a * ( - 3.0 * a + 3.0 ) + 3.0 ) + 1.0 );\n	}\n	float w3( float a ) {\n		return ( 1.0 / 6.0 ) * ( a * a * a );\n	}\n	float g0( float a ) {\n		return w0( a ) + w1( a );\n	}\n	float g1( float a ) {\n		return w2( a ) + w3( a );\n	}\n	float h0( float a ) {\n		return - 1.0 + w1( a ) / ( w0( a ) + w1( a ) );\n	}\n	float h1( float a ) {\n		return 1.0 + w3( a ) / ( w2( a ) + w3( a ) );\n	}\n	vec4 bicubic( sampler2D tex, vec2 uv, vec4 texelSize, float lod ) {\n		uv = uv * texelSize.zw + 0.5;\n		vec2 iuv = floor( uv );\n		vec2 fuv = fract( uv );\n		float g0x = g0( fuv.x );\n		float g1x = g1( fuv.x );\n		float h0x = h0( fuv.x );\n		float h1x = h1( fuv.x );\n		float h0y = h0( fuv.y );\n		float h1y = h1( fuv.y );\n		vec2 p0 = ( vec2( iuv.x + h0x, iuv.y + h0y ) - 0.5 ) * texelSize.xy;\n		vec2 p1 = ( vec2( iuv.x + h1x, iuv.y + h0y ) - 0.5 ) * texelSize.xy;\n		vec2 p2 = ( vec2( iuv.x + h0x, iuv.y + h1y ) - 0.5 ) * texelSize.xy;\n		vec2 p3 = ( vec2( iuv.x + h1x, iuv.y + h1y ) - 0.5 ) * texelSize.xy;\n		return g0( fuv.y ) * ( g0x * textureLod( tex, p0, lod ) + g1x * textureLod( tex, p1, lod ) ) +\n			g1( fuv.y ) * ( g0x * textureLod( tex, p2, lod ) + g1x * textureLod( tex, p3, lod ) );\n	}\n	vec4 textureBicubic( sampler2D sampler, vec2 uv, float lod ) {\n		vec2 fLodSize = vec2( textureSize( sampler, int( lod ) ) );\n		vec2 cLodSize = vec2( textureSize( sampler, int( lod + 1.0 ) ) );\n		vec2 fLodSizeInv = 1.0 / fLodSize;\n		vec2 cLodSizeInv = 1.0 / cLodSize;\n		vec4 fSample = bicubic( sampler, uv, vec4( fLodSizeInv, fLodSize ), floor( lod ) );\n		vec4 cSample = bicubic( sampler, uv, vec4( cLodSizeInv, cLodSize ), ceil( lod ) );\n		return mix( fSample, cSample, fract( lod ) );\n	}\n	vec3 getVolumeTransmissionRay( const in vec3 n, const in vec3 v, const in float thickness, const in float ior, const in mat4 modelMatrix ) {\n		vec3 refractionVector = refract( - v, normalize( n ), 1.0 / ior );\n		vec3 modelScale;\n		modelScale.x = length( vec3( modelMatrix[ 0 ].xyz ) );\n		modelScale.y = length( vec3( modelMatrix[ 1 ].xyz ) );\n		modelScale.z = length( vec3( modelMatrix[ 2 ].xyz ) );\n		return normalize( refractionVector ) * thickness * modelScale;\n	}\n	float applyIorToRoughness( const in float roughness, const in float ior ) {\n		return roughness * clamp( ior * 2.0 - 2.0, 0.0, 1.0 );\n	}\n	vec4 getTransmissionSample( const in vec2 fragCoord, const in float roughness, const in float ior ) {\n		float lod = log2( transmissionSamplerSize.x ) * applyIorToRoughness( roughness, ior );\n		return textureBicubic( transmissionSamplerMap, fragCoord.xy, lod );\n	}\n	vec3 volumeAttenuation( const in float transmissionDistance, const in vec3 attenuationColor, const in float attenuationDistance ) {\n		if ( isinf( attenuationDistance ) ) {\n			return vec3( 1.0 );\n		} else {\n			vec3 attenuationCoefficient = -log( attenuationColor ) / attenuationDistance;\n			vec3 transmittance = exp( - attenuationCoefficient * transmissionDistance );			return transmittance;\n		}\n	}\n	vec4 getIBLVolumeRefraction( const in vec3 n, const in vec3 v, const in float roughness, const in vec3 diffuseColor,\n		const in vec3 specularColor, const in float specularF90, const in vec3 position, const in mat4 modelMatrix,\n		const in mat4 viewMatrix, const in mat4 projMatrix, const in float ior, const in float thickness,\n		const in vec3 attenuationColor, const in float attenuationDistance ) {\n		vec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, ior, modelMatrix );\n		vec3 refractedRayExit = position + transmissionRay;\n		vec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );\n		vec2 refractionCoords = ndcPos.xy / ndcPos.w;\n		refractionCoords += 1.0;\n		refractionCoords /= 2.0;\n		vec4 transmittedLight = getTransmissionSample( refractionCoords, roughness, ior );\n		vec3 transmittance = diffuseColor * volumeAttenuation( length( transmissionRay ), attenuationColor, attenuationDistance );\n		vec3 attenuatedColor = transmittance * transmittedLight.rgb;\n		vec3 F = EnvironmentBRDF( n, v, specularColor, specularF90, roughness );\n		float transmittanceFactor = ( transmittance.r + transmittance.g + transmittance.b ) / 3.0;\n		return vec4( ( 1.0 - F ) * attenuatedColor, 1.0 - ( 1.0 - transmittedLight.a ) * transmittanceFactor );\n	}\n#endif";
  var uv_pars_fragment = "#if defined( USE_UV ) || defined( USE_ANISOTROPY )\n	varying vec2 vUv;\n#endif\n#ifdef USE_MAP\n	varying vec2 vMapUv;\n#endif\n#ifdef USE_ALPHAMAP\n	varying vec2 vAlphaMapUv;\n#endif\n#ifdef USE_LIGHTMAP\n	varying vec2 vLightMapUv;\n#endif\n#ifdef USE_AOMAP\n	varying vec2 vAoMapUv;\n#endif\n#ifdef USE_BUMPMAP\n	varying vec2 vBumpMapUv;\n#endif\n#ifdef USE_NORMALMAP\n	varying vec2 vNormalMapUv;\n#endif\n#ifdef USE_EMISSIVEMAP\n	varying vec2 vEmissiveMapUv;\n#endif\n#ifdef USE_METALNESSMAP\n	varying vec2 vMetalnessMapUv;\n#endif\n#ifdef USE_ROUGHNESSMAP\n	varying vec2 vRoughnessMapUv;\n#endif\n#ifdef USE_ANISOTROPYMAP\n	varying vec2 vAnisotropyMapUv;\n#endif\n#ifdef USE_CLEARCOATMAP\n	varying vec2 vClearcoatMapUv;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n	varying vec2 vClearcoatNormalMapUv;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n	varying vec2 vClearcoatRoughnessMapUv;\n#endif\n#ifdef USE_IRIDESCENCEMAP\n	varying vec2 vIridescenceMapUv;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n	varying vec2 vIridescenceThicknessMapUv;\n#endif\n#ifdef USE_SHEEN_COLORMAP\n	varying vec2 vSheenColorMapUv;\n#endif\n#ifdef USE_SHEEN_ROUGHNESSMAP\n	varying vec2 vSheenRoughnessMapUv;\n#endif\n#ifdef USE_SPECULARMAP\n	varying vec2 vSpecularMapUv;\n#endif\n#ifdef USE_SPECULAR_COLORMAP\n	varying vec2 vSpecularColorMapUv;\n#endif\n#ifdef USE_SPECULAR_INTENSITYMAP\n	varying vec2 vSpecularIntensityMapUv;\n#endif\n#ifdef USE_TRANSMISSIONMAP\n	uniform mat3 transmissionMapTransform;\n	varying vec2 vTransmissionMapUv;\n#endif\n#ifdef USE_THICKNESSMAP\n	uniform mat3 thicknessMapTransform;\n	varying vec2 vThicknessMapUv;\n#endif";
  var uv_pars_vertex = "#if defined( USE_UV ) || defined( USE_ANISOTROPY )\n	varying vec2 vUv;\n#endif\n#ifdef USE_MAP\n	uniform mat3 mapTransform;\n	varying vec2 vMapUv;\n#endif\n#ifdef USE_ALPHAMAP\n	uniform mat3 alphaMapTransform;\n	varying vec2 vAlphaMapUv;\n#endif\n#ifdef USE_LIGHTMAP\n	uniform mat3 lightMapTransform;\n	varying vec2 vLightMapUv;\n#endif\n#ifdef USE_AOMAP\n	uniform mat3 aoMapTransform;\n	varying vec2 vAoMapUv;\n#endif\n#ifdef USE_BUMPMAP\n	uniform mat3 bumpMapTransform;\n	varying vec2 vBumpMapUv;\n#endif\n#ifdef USE_NORMALMAP\n	uniform mat3 normalMapTransform;\n	varying vec2 vNormalMapUv;\n#endif\n#ifdef USE_DISPLACEMENTMAP\n	uniform mat3 displacementMapTransform;\n	varying vec2 vDisplacementMapUv;\n#endif\n#ifdef USE_EMISSIVEMAP\n	uniform mat3 emissiveMapTransform;\n	varying vec2 vEmissiveMapUv;\n#endif\n#ifdef USE_METALNESSMAP\n	uniform mat3 metalnessMapTransform;\n	varying vec2 vMetalnessMapUv;\n#endif\n#ifdef USE_ROUGHNESSMAP\n	uniform mat3 roughnessMapTransform;\n	varying vec2 vRoughnessMapUv;\n#endif\n#ifdef USE_ANISOTROPYMAP\n	uniform mat3 anisotropyMapTransform;\n	varying vec2 vAnisotropyMapUv;\n#endif\n#ifdef USE_CLEARCOATMAP\n	uniform mat3 clearcoatMapTransform;\n	varying vec2 vClearcoatMapUv;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n	uniform mat3 clearcoatNormalMapTransform;\n	varying vec2 vClearcoatNormalMapUv;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n	uniform mat3 clearcoatRoughnessMapTransform;\n	varying vec2 vClearcoatRoughnessMapUv;\n#endif\n#ifdef USE_SHEEN_COLORMAP\n	uniform mat3 sheenColorMapTransform;\n	varying vec2 vSheenColorMapUv;\n#endif\n#ifdef USE_SHEEN_ROUGHNESSMAP\n	uniform mat3 sheenRoughnessMapTransform;\n	varying vec2 vSheenRoughnessMapUv;\n#endif\n#ifdef USE_IRIDESCENCEMAP\n	uniform mat3 iridescenceMapTransform;\n	varying vec2 vIridescenceMapUv;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n	uniform mat3 iridescenceThicknessMapTransform;\n	varying vec2 vIridescenceThicknessMapUv;\n#endif\n#ifdef USE_SPECULARMAP\n	uniform mat3 specularMapTransform;\n	varying vec2 vSpecularMapUv;\n#endif\n#ifdef USE_SPECULAR_COLORMAP\n	uniform mat3 specularColorMapTransform;\n	varying vec2 vSpecularColorMapUv;\n#endif\n#ifdef USE_SPECULAR_INTENSITYMAP\n	uniform mat3 specularIntensityMapTransform;\n	varying vec2 vSpecularIntensityMapUv;\n#endif\n#ifdef USE_TRANSMISSIONMAP\n	uniform mat3 transmissionMapTransform;\n	varying vec2 vTransmissionMapUv;\n#endif\n#ifdef USE_THICKNESSMAP\n	uniform mat3 thicknessMapTransform;\n	varying vec2 vThicknessMapUv;\n#endif";
  var uv_vertex = "#if defined( USE_UV ) || defined( USE_ANISOTROPY )\n	vUv = vec3( uv, 1 ).xy;\n#endif\n#ifdef USE_MAP\n	vMapUv = ( mapTransform * vec3( MAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_ALPHAMAP\n	vAlphaMapUv = ( alphaMapTransform * vec3( ALPHAMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_LIGHTMAP\n	vLightMapUv = ( lightMapTransform * vec3( LIGHTMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_AOMAP\n	vAoMapUv = ( aoMapTransform * vec3( AOMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_BUMPMAP\n	vBumpMapUv = ( bumpMapTransform * vec3( BUMPMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_NORMALMAP\n	vNormalMapUv = ( normalMapTransform * vec3( NORMALMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_DISPLACEMENTMAP\n	vDisplacementMapUv = ( displacementMapTransform * vec3( DISPLACEMENTMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_EMISSIVEMAP\n	vEmissiveMapUv = ( emissiveMapTransform * vec3( EMISSIVEMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_METALNESSMAP\n	vMetalnessMapUv = ( metalnessMapTransform * vec3( METALNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_ROUGHNESSMAP\n	vRoughnessMapUv = ( roughnessMapTransform * vec3( ROUGHNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_ANISOTROPYMAP\n	vAnisotropyMapUv = ( anisotropyMapTransform * vec3( ANISOTROPYMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_CLEARCOATMAP\n	vClearcoatMapUv = ( clearcoatMapTransform * vec3( CLEARCOATMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n	vClearcoatNormalMapUv = ( clearcoatNormalMapTransform * vec3( CLEARCOAT_NORMALMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n	vClearcoatRoughnessMapUv = ( clearcoatRoughnessMapTransform * vec3( CLEARCOAT_ROUGHNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_IRIDESCENCEMAP\n	vIridescenceMapUv = ( iridescenceMapTransform * vec3( IRIDESCENCEMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n	vIridescenceThicknessMapUv = ( iridescenceThicknessMapTransform * vec3( IRIDESCENCE_THICKNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SHEEN_COLORMAP\n	vSheenColorMapUv = ( sheenColorMapTransform * vec3( SHEEN_COLORMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SHEEN_ROUGHNESSMAP\n	vSheenRoughnessMapUv = ( sheenRoughnessMapTransform * vec3( SHEEN_ROUGHNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SPECULARMAP\n	vSpecularMapUv = ( specularMapTransform * vec3( SPECULARMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SPECULAR_COLORMAP\n	vSpecularColorMapUv = ( specularColorMapTransform * vec3( SPECULAR_COLORMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SPECULAR_INTENSITYMAP\n	vSpecularIntensityMapUv = ( specularIntensityMapTransform * vec3( SPECULAR_INTENSITYMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_TRANSMISSIONMAP\n	vTransmissionMapUv = ( transmissionMapTransform * vec3( TRANSMISSIONMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_THICKNESSMAP\n	vThicknessMapUv = ( thicknessMapTransform * vec3( THICKNESSMAP_UV, 1 ) ).xy;\n#endif";
  var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION ) || NUM_SPOT_LIGHT_COORDS > 0\n	vec4 worldPosition = vec4( transformed, 1.0 );\n	#ifdef USE_BATCHING\n		worldPosition = batchingMatrix * worldPosition;\n	#endif\n	#ifdef USE_INSTANCING\n		worldPosition = instanceMatrix * worldPosition;\n	#endif\n	worldPosition = modelMatrix * worldPosition;\n#endif";
  var vertex$h = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n	vUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n	gl_Position = vec4( position.xy, 1.0, 1.0 );\n}";
  var fragment$h = "uniform sampler2D t2D;\nuniform float backgroundIntensity;\nvarying vec2 vUv;\nvoid main() {\n	vec4 texColor = texture2D( t2D, vUv );\n	#ifdef DECODE_VIDEO_TEXTURE\n		texColor = vec4( mix( pow( texColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), texColor.rgb * 0.0773993808, vec3( lessThanEqual( texColor.rgb, vec3( 0.04045 ) ) ) ), texColor.w );\n	#endif\n	texColor.rgb *= backgroundIntensity;\n	gl_FragColor = texColor;\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n}";
  var vertex$g = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n	vWorldDirection = transformDirection( position, modelMatrix );\n	#include <begin_vertex>\n	#include <project_vertex>\n	gl_Position.z = gl_Position.w;\n}";
  var fragment$g = "#ifdef ENVMAP_TYPE_CUBE\n	uniform samplerCube envMap;\n#elif defined( ENVMAP_TYPE_CUBE_UV )\n	uniform sampler2D envMap;\n#endif\nuniform float flipEnvMap;\nuniform float backgroundBlurriness;\nuniform float backgroundIntensity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n	#ifdef ENVMAP_TYPE_CUBE\n		vec4 texColor = textureCube( envMap, vec3( flipEnvMap * vWorldDirection.x, vWorldDirection.yz ) );\n	#elif defined( ENVMAP_TYPE_CUBE_UV )\n		vec4 texColor = textureCubeUV( envMap, vWorldDirection, backgroundBlurriness );\n	#else\n		vec4 texColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n	#endif\n	texColor.rgb *= backgroundIntensity;\n	gl_FragColor = texColor;\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n}";
  var vertex$f = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n	vWorldDirection = transformDirection( position, modelMatrix );\n	#include <begin_vertex>\n	#include <project_vertex>\n	gl_Position.z = gl_Position.w;\n}";
  var fragment$f = "uniform samplerCube tCube;\nuniform float tFlip;\nuniform float opacity;\nvarying vec3 vWorldDirection;\nvoid main() {\n	vec4 texColor = textureCube( tCube, vec3( tFlip * vWorldDirection.x, vWorldDirection.yz ) );\n	gl_FragColor = texColor;\n	gl_FragColor.a *= opacity;\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n}";
  var vertex$e = "#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n	#include <uv_vertex>\n	#include <batching_vertex>\n	#include <skinbase_vertex>\n	#ifdef USE_DISPLACEMENTMAP\n		#include <beginnormal_vertex>\n		#include <morphnormal_vertex>\n		#include <skinnormal_vertex>\n	#endif\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <displacementmap_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	vHighPrecisionZW = gl_Position.zw;\n}";
  var fragment$e = "#if DEPTH_PACKING == 3200\n	uniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n	#include <clipping_planes_fragment>\n	vec4 diffuseColor = vec4( 1.0 );\n	#if DEPTH_PACKING == 3200\n		diffuseColor.a = opacity;\n	#endif\n	#include <map_fragment>\n	#include <alphamap_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	#include <logdepthbuf_fragment>\n	float fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n	#if DEPTH_PACKING == 3200\n		gl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n	#elif DEPTH_PACKING == 3201\n		gl_FragColor = packDepthToRGBA( fragCoordZ );\n	#endif\n}";
  var vertex$d = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	#include <uv_vertex>\n	#include <batching_vertex>\n	#include <skinbase_vertex>\n	#ifdef USE_DISPLACEMENTMAP\n		#include <beginnormal_vertex>\n		#include <morphnormal_vertex>\n		#include <skinnormal_vertex>\n	#endif\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <displacementmap_vertex>\n	#include <project_vertex>\n	#include <worldpos_vertex>\n	#include <clipping_planes_vertex>\n	vWorldPosition = worldPosition.xyz;\n}";
  var fragment$d = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n	#include <clipping_planes_fragment>\n	vec4 diffuseColor = vec4( 1.0 );\n	#include <map_fragment>\n	#include <alphamap_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	float dist = length( vWorldPosition - referencePosition );\n	dist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n	dist = saturate( dist );\n	gl_FragColor = packDepthToRGBA( dist );\n}";
  var vertex$c = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n	vWorldDirection = transformDirection( position, modelMatrix );\n	#include <begin_vertex>\n	#include <project_vertex>\n}";
  var fragment$c = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n	vec3 direction = normalize( vWorldDirection );\n	vec2 sampleUV = equirectUv( direction );\n	gl_FragColor = texture2D( tEquirect, sampleUV );\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n}";
  var vertex$b = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	vLineDistance = scale * lineDistance;\n	#include <uv_vertex>\n	#include <color_vertex>\n	#include <morphcolor_vertex>\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	#include <fog_vertex>\n}";
  var fragment$b = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	if ( mod( vLineDistance, totalSize ) > dashSize ) {\n		discard;\n	}\n	vec3 outgoingLight = vec3( 0.0 );\n	vec4 diffuseColor = vec4( diffuse, opacity );\n	#include <logdepthbuf_fragment>\n	#include <map_fragment>\n	#include <color_fragment>\n	outgoingLight = diffuseColor.rgb;\n	#include <opaque_fragment>\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n	#include <premultiplied_alpha_fragment>\n}";
  var vertex$a = "#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	#include <uv_vertex>\n	#include <color_vertex>\n	#include <morphcolor_vertex>\n	#include <batching_vertex>\n	#if defined ( USE_ENVMAP ) || defined ( USE_SKINNING )\n		#include <beginnormal_vertex>\n		#include <morphnormal_vertex>\n		#include <skinbase_vertex>\n		#include <skinnormal_vertex>\n		#include <defaultnormal_vertex>\n	#endif\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	#include <worldpos_vertex>\n	#include <envmap_vertex>\n	#include <fog_vertex>\n}";
  var fragment$a = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n	varying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	vec4 diffuseColor = vec4( diffuse, opacity );\n	#include <logdepthbuf_fragment>\n	#include <map_fragment>\n	#include <color_fragment>\n	#include <alphamap_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	#include <specularmap_fragment>\n	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n	#ifdef USE_LIGHTMAP\n		vec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\n		reflectedLight.indirectDiffuse += lightMapTexel.rgb * lightMapIntensity * RECIPROCAL_PI;\n	#else\n		reflectedLight.indirectDiffuse += vec3( 1.0 );\n	#endif\n	#include <aomap_fragment>\n	reflectedLight.indirectDiffuse *= diffuseColor.rgb;\n	vec3 outgoingLight = reflectedLight.indirectDiffuse;\n	#include <envmap_fragment>\n	#include <opaque_fragment>\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n	#include <premultiplied_alpha_fragment>\n	#include <dithering_fragment>\n}";
  var vertex$9 = "#define LAMBERT\nvarying vec3 vViewPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	#include <uv_vertex>\n	#include <color_vertex>\n	#include <morphcolor_vertex>\n	#include <batching_vertex>\n	#include <beginnormal_vertex>\n	#include <morphnormal_vertex>\n	#include <skinbase_vertex>\n	#include <skinnormal_vertex>\n	#include <defaultnormal_vertex>\n	#include <normal_vertex>\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <displacementmap_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	vViewPosition = - mvPosition.xyz;\n	#include <worldpos_vertex>\n	#include <envmap_vertex>\n	#include <shadowmap_vertex>\n	#include <fog_vertex>\n}";
  var fragment$9 = "#define LAMBERT\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_lambert_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	vec4 diffuseColor = vec4( diffuse, opacity );\n	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n	vec3 totalEmissiveRadiance = emissive;\n	#include <logdepthbuf_fragment>\n	#include <map_fragment>\n	#include <color_fragment>\n	#include <alphamap_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	#include <specularmap_fragment>\n	#include <normal_fragment_begin>\n	#include <normal_fragment_maps>\n	#include <emissivemap_fragment>\n	#include <lights_lambert_fragment>\n	#include <lights_fragment_begin>\n	#include <lights_fragment_maps>\n	#include <lights_fragment_end>\n	#include <aomap_fragment>\n	vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n	#include <envmap_fragment>\n	#include <opaque_fragment>\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n	#include <premultiplied_alpha_fragment>\n	#include <dithering_fragment>\n}";
  var vertex$8 = "#define MATCAP\nvarying vec3 vViewPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	#include <uv_vertex>\n	#include <color_vertex>\n	#include <morphcolor_vertex>\n	#include <batching_vertex>\n	#include <beginnormal_vertex>\n	#include <morphnormal_vertex>\n	#include <skinbase_vertex>\n	#include <skinnormal_vertex>\n	#include <defaultnormal_vertex>\n	#include <normal_vertex>\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <displacementmap_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	#include <fog_vertex>\n	vViewPosition = - mvPosition.xyz;\n}";
  var fragment$8 = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <fog_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	vec4 diffuseColor = vec4( diffuse, opacity );\n	#include <logdepthbuf_fragment>\n	#include <map_fragment>\n	#include <color_fragment>\n	#include <alphamap_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	#include <normal_fragment_begin>\n	#include <normal_fragment_maps>\n	vec3 viewDir = normalize( vViewPosition );\n	vec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n	vec3 y = cross( viewDir, x );\n	vec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n	#ifdef USE_MATCAP\n		vec4 matcapColor = texture2D( matcap, uv );\n	#else\n		vec4 matcapColor = vec4( vec3( mix( 0.2, 0.8, uv.y ) ), 1.0 );\n	#endif\n	vec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n	#include <opaque_fragment>\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n	#include <premultiplied_alpha_fragment>\n	#include <dithering_fragment>\n}";
  var vertex$7 = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\n	varying vec3 vViewPosition;\n#endif\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	#include <uv_vertex>\n	#include <batching_vertex>\n	#include <beginnormal_vertex>\n	#include <morphnormal_vertex>\n	#include <skinbase_vertex>\n	#include <skinnormal_vertex>\n	#include <defaultnormal_vertex>\n	#include <normal_vertex>\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <displacementmap_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\n	vViewPosition = - mvPosition.xyz;\n#endif\n}";
  var fragment$7 = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\n	varying vec3 vViewPosition;\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	#include <logdepthbuf_fragment>\n	#include <normal_fragment_begin>\n	#include <normal_fragment_maps>\n	gl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n	#ifdef OPAQUE\n		gl_FragColor.a = 1.0;\n	#endif\n}";
  var vertex$6 = "#define PHONG\nvarying vec3 vViewPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	#include <uv_vertex>\n	#include <color_vertex>\n	#include <morphcolor_vertex>\n	#include <batching_vertex>\n	#include <beginnormal_vertex>\n	#include <morphnormal_vertex>\n	#include <skinbase_vertex>\n	#include <skinnormal_vertex>\n	#include <defaultnormal_vertex>\n	#include <normal_vertex>\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <displacementmap_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	vViewPosition = - mvPosition.xyz;\n	#include <worldpos_vertex>\n	#include <envmap_vertex>\n	#include <shadowmap_vertex>\n	#include <fog_vertex>\n}";
  var fragment$6 = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	vec4 diffuseColor = vec4( diffuse, opacity );\n	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n	vec3 totalEmissiveRadiance = emissive;\n	#include <logdepthbuf_fragment>\n	#include <map_fragment>\n	#include <color_fragment>\n	#include <alphamap_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	#include <specularmap_fragment>\n	#include <normal_fragment_begin>\n	#include <normal_fragment_maps>\n	#include <emissivemap_fragment>\n	#include <lights_phong_fragment>\n	#include <lights_fragment_begin>\n	#include <lights_fragment_maps>\n	#include <lights_fragment_end>\n	#include <aomap_fragment>\n	vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n	#include <envmap_fragment>\n	#include <opaque_fragment>\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n	#include <premultiplied_alpha_fragment>\n	#include <dithering_fragment>\n}";
  var vertex$5 = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifdef USE_TRANSMISSION\n	varying vec3 vWorldPosition;\n#endif\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	#include <uv_vertex>\n	#include <color_vertex>\n	#include <morphcolor_vertex>\n	#include <batching_vertex>\n	#include <beginnormal_vertex>\n	#include <morphnormal_vertex>\n	#include <skinbase_vertex>\n	#include <skinnormal_vertex>\n	#include <defaultnormal_vertex>\n	#include <normal_vertex>\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <displacementmap_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	vViewPosition = - mvPosition.xyz;\n	#include <worldpos_vertex>\n	#include <shadowmap_vertex>\n	#include <fog_vertex>\n#ifdef USE_TRANSMISSION\n	vWorldPosition = worldPosition.xyz;\n#endif\n}";
  var fragment$5 = "#define STANDARD\n#ifdef PHYSICAL\n	#define IOR\n	#define USE_SPECULAR\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef IOR\n	uniform float ior;\n#endif\n#ifdef USE_SPECULAR\n	uniform float specularIntensity;\n	uniform vec3 specularColor;\n	#ifdef USE_SPECULAR_COLORMAP\n		uniform sampler2D specularColorMap;\n	#endif\n	#ifdef USE_SPECULAR_INTENSITYMAP\n		uniform sampler2D specularIntensityMap;\n	#endif\n#endif\n#ifdef USE_CLEARCOAT\n	uniform float clearcoat;\n	uniform float clearcoatRoughness;\n#endif\n#ifdef USE_IRIDESCENCE\n	uniform float iridescence;\n	uniform float iridescenceIOR;\n	uniform float iridescenceThicknessMinimum;\n	uniform float iridescenceThicknessMaximum;\n#endif\n#ifdef USE_SHEEN\n	uniform vec3 sheenColor;\n	uniform float sheenRoughness;\n	#ifdef USE_SHEEN_COLORMAP\n		uniform sampler2D sheenColorMap;\n	#endif\n	#ifdef USE_SHEEN_ROUGHNESSMAP\n		uniform sampler2D sheenRoughnessMap;\n	#endif\n#endif\n#ifdef USE_ANISOTROPY\n	uniform vec2 anisotropyVector;\n	#ifdef USE_ANISOTROPYMAP\n		uniform sampler2D anisotropyMap;\n	#endif\n#endif\nvarying vec3 vViewPosition;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <iridescence_fragment>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_physical_pars_fragment>\n#include <transmission_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <iridescence_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	vec4 diffuseColor = vec4( diffuse, opacity );\n	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n	vec3 totalEmissiveRadiance = emissive;\n	#include <logdepthbuf_fragment>\n	#include <map_fragment>\n	#include <color_fragment>\n	#include <alphamap_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	#include <roughnessmap_fragment>\n	#include <metalnessmap_fragment>\n	#include <normal_fragment_begin>\n	#include <normal_fragment_maps>\n	#include <clearcoat_normal_fragment_begin>\n	#include <clearcoat_normal_fragment_maps>\n	#include <emissivemap_fragment>\n	#include <lights_physical_fragment>\n	#include <lights_fragment_begin>\n	#include <lights_fragment_maps>\n	#include <lights_fragment_end>\n	#include <aomap_fragment>\n	vec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;\n	vec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;\n	#include <transmission_fragment>\n	vec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;\n	#ifdef USE_SHEEN\n		float sheenEnergyComp = 1.0 - 0.157 * max3( material.sheenColor );\n		outgoingLight = outgoingLight * sheenEnergyComp + sheenSpecularDirect + sheenSpecularIndirect;\n	#endif\n	#ifdef USE_CLEARCOAT\n		float dotNVcc = saturate( dot( geometryClearcoatNormal, geometryViewDir ) );\n		vec3 Fcc = F_Schlick( material.clearcoatF0, material.clearcoatF90, dotNVcc );\n		outgoingLight = outgoingLight * ( 1.0 - material.clearcoat * Fcc ) + ( clearcoatSpecularDirect + clearcoatSpecularIndirect ) * material.clearcoat;\n	#endif\n	#include <opaque_fragment>\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n	#include <premultiplied_alpha_fragment>\n	#include <dithering_fragment>\n}";
  var vertex$4 = "#define TOON\nvarying vec3 vViewPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	#include <uv_vertex>\n	#include <color_vertex>\n	#include <morphcolor_vertex>\n	#include <batching_vertex>\n	#include <beginnormal_vertex>\n	#include <morphnormal_vertex>\n	#include <skinbase_vertex>\n	#include <skinnormal_vertex>\n	#include <defaultnormal_vertex>\n	#include <normal_vertex>\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <displacementmap_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	vViewPosition = - mvPosition.xyz;\n	#include <worldpos_vertex>\n	#include <shadowmap_vertex>\n	#include <fog_vertex>\n}";
  var fragment$4 = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	vec4 diffuseColor = vec4( diffuse, opacity );\n	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n	vec3 totalEmissiveRadiance = emissive;\n	#include <logdepthbuf_fragment>\n	#include <map_fragment>\n	#include <color_fragment>\n	#include <alphamap_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	#include <normal_fragment_begin>\n	#include <normal_fragment_maps>\n	#include <emissivemap_fragment>\n	#include <lights_toon_fragment>\n	#include <lights_fragment_begin>\n	#include <lights_fragment_maps>\n	#include <lights_fragment_end>\n	#include <aomap_fragment>\n	vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n	#include <opaque_fragment>\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n	#include <premultiplied_alpha_fragment>\n	#include <dithering_fragment>\n}";
  var vertex$3 = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\n#ifdef USE_POINTS_UV\n	varying vec2 vUv;\n	uniform mat3 uvTransform;\n#endif\nvoid main() {\n	#ifdef USE_POINTS_UV\n		vUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n	#endif\n	#include <color_vertex>\n	#include <morphcolor_vertex>\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <project_vertex>\n	gl_PointSize = size;\n	#ifdef USE_SIZEATTENUATION\n		bool isPerspective = isPerspectiveMatrix( projectionMatrix );\n		if ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n	#endif\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	#include <worldpos_vertex>\n	#include <fog_vertex>\n}";
  var fragment$3 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	vec3 outgoingLight = vec3( 0.0 );\n	vec4 diffuseColor = vec4( diffuse, opacity );\n	#include <logdepthbuf_fragment>\n	#include <map_particle_fragment>\n	#include <color_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	outgoingLight = diffuseColor.rgb;\n	#include <opaque_fragment>\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n	#include <premultiplied_alpha_fragment>\n}";
  var vertex$2 = "#include <common>\n#include <batching_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n	#include <batching_vertex>\n	#include <beginnormal_vertex>\n	#include <morphnormal_vertex>\n	#include <skinbase_vertex>\n	#include <skinnormal_vertex>\n	#include <defaultnormal_vertex>\n	#include <begin_vertex>\n	#include <morphtarget_vertex>\n	#include <skinning_vertex>\n	#include <project_vertex>\n	#include <logdepthbuf_vertex>\n	#include <worldpos_vertex>\n	#include <shadowmap_vertex>\n	#include <fog_vertex>\n}";
  var fragment$2 = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <logdepthbuf_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n	#include <logdepthbuf_fragment>\n	gl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n}";
  var vertex$1 = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n	#include <uv_vertex>\n	vec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n	vec2 scale;\n	scale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n	scale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n	#ifndef USE_SIZEATTENUATION\n		bool isPerspective = isPerspectiveMatrix( projectionMatrix );\n		if ( isPerspective ) scale *= - mvPosition.z;\n	#endif\n	vec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n	vec2 rotatedPosition;\n	rotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n	rotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n	mvPosition.xy += rotatedPosition;\n	gl_Position = projectionMatrix * mvPosition;\n	#include <logdepthbuf_vertex>\n	#include <clipping_planes_vertex>\n	#include <fog_vertex>\n}";
  var fragment$1 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n	#include <clipping_planes_fragment>\n	vec3 outgoingLight = vec3( 0.0 );\n	vec4 diffuseColor = vec4( diffuse, opacity );\n	#include <logdepthbuf_fragment>\n	#include <map_fragment>\n	#include <alphamap_fragment>\n	#include <alphatest_fragment>\n	#include <alphahash_fragment>\n	outgoingLight = diffuseColor.rgb;\n	#include <opaque_fragment>\n	#include <tonemapping_fragment>\n	#include <colorspace_fragment>\n	#include <fog_fragment>\n}";
  var ShaderChunk = {
    alphahash_fragment,
    alphahash_pars_fragment,
    alphamap_fragment,
    alphamap_pars_fragment,
    alphatest_fragment,
    alphatest_pars_fragment,
    aomap_fragment,
    aomap_pars_fragment,
    batching_pars_vertex,
    batching_vertex,
    begin_vertex,
    beginnormal_vertex,
    bsdfs,
    iridescence_fragment,
    bumpmap_pars_fragment,
    clipping_planes_fragment,
    clipping_planes_pars_fragment,
    clipping_planes_pars_vertex,
    clipping_planes_vertex,
    color_fragment,
    color_pars_fragment,
    color_pars_vertex,
    color_vertex,
    common,
    cube_uv_reflection_fragment,
    defaultnormal_vertex,
    displacementmap_pars_vertex,
    displacementmap_vertex,
    emissivemap_fragment,
    emissivemap_pars_fragment,
    colorspace_fragment,
    colorspace_pars_fragment,
    envmap_fragment,
    envmap_common_pars_fragment,
    envmap_pars_fragment,
    envmap_pars_vertex,
    envmap_physical_pars_fragment,
    envmap_vertex,
    fog_vertex,
    fog_pars_vertex,
    fog_fragment,
    fog_pars_fragment,
    gradientmap_pars_fragment,
    lightmap_fragment,
    lightmap_pars_fragment,
    lights_lambert_fragment,
    lights_lambert_pars_fragment,
    lights_pars_begin,
    lights_toon_fragment,
    lights_toon_pars_fragment,
    lights_phong_fragment,
    lights_phong_pars_fragment,
    lights_physical_fragment,
    lights_physical_pars_fragment,
    lights_fragment_begin,
    lights_fragment_maps,
    lights_fragment_end,
    logdepthbuf_fragment,
    logdepthbuf_pars_fragment,
    logdepthbuf_pars_vertex,
    logdepthbuf_vertex,
    map_fragment,
    map_pars_fragment,
    map_particle_fragment,
    map_particle_pars_fragment,
    metalnessmap_fragment,
    metalnessmap_pars_fragment,
    morphcolor_vertex,
    morphnormal_vertex,
    morphtarget_pars_vertex,
    morphtarget_vertex,
    normal_fragment_begin,
    normal_fragment_maps,
    normal_pars_fragment,
    normal_pars_vertex,
    normal_vertex,
    normalmap_pars_fragment,
    clearcoat_normal_fragment_begin,
    clearcoat_normal_fragment_maps,
    clearcoat_pars_fragment,
    iridescence_pars_fragment,
    opaque_fragment,
    packing,
    premultiplied_alpha_fragment,
    project_vertex,
    dithering_fragment,
    dithering_pars_fragment,
    roughnessmap_fragment,
    roughnessmap_pars_fragment,
    shadowmap_pars_fragment,
    shadowmap_pars_vertex,
    shadowmap_vertex,
    shadowmask_pars_fragment,
    skinbase_vertex,
    skinning_pars_vertex,
    skinning_vertex,
    skinnormal_vertex,
    specularmap_fragment,
    specularmap_pars_fragment,
    tonemapping_fragment,
    tonemapping_pars_fragment,
    transmission_fragment,
    transmission_pars_fragment,
    uv_pars_fragment,
    uv_pars_vertex,
    uv_vertex,
    worldpos_vertex,
    background_vert: vertex$h,
    background_frag: fragment$h,
    backgroundCube_vert: vertex$g,
    backgroundCube_frag: fragment$g,
    cube_vert: vertex$f,
    cube_frag: fragment$f,
    depth_vert: vertex$e,
    depth_frag: fragment$e,
    distanceRGBA_vert: vertex$d,
    distanceRGBA_frag: fragment$d,
    equirect_vert: vertex$c,
    equirect_frag: fragment$c,
    linedashed_vert: vertex$b,
    linedashed_frag: fragment$b,
    meshbasic_vert: vertex$a,
    meshbasic_frag: fragment$a,
    meshlambert_vert: vertex$9,
    meshlambert_frag: fragment$9,
    meshmatcap_vert: vertex$8,
    meshmatcap_frag: fragment$8,
    meshnormal_vert: vertex$7,
    meshnormal_frag: fragment$7,
    meshphong_vert: vertex$6,
    meshphong_frag: fragment$6,
    meshphysical_vert: vertex$5,
    meshphysical_frag: fragment$5,
    meshtoon_vert: vertex$4,
    meshtoon_frag: fragment$4,
    points_vert: vertex$3,
    points_frag: fragment$3,
    shadow_vert: vertex$2,
    shadow_frag: fragment$2,
    sprite_vert: vertex$1,
    sprite_frag: fragment$1
  };
  var UniformsLib = {
    common: {
      diffuse: { value: /* @__PURE__ */ new Color(16777215) },
      opacity: { value: 1 },
      map: { value: null },
      mapTransform: { value: /* @__PURE__ */ new Matrix3() },
      alphaMap: { value: null },
      alphaMapTransform: { value: /* @__PURE__ */ new Matrix3() },
      alphaTest: { value: 0 }
    },
    specularmap: {
      specularMap: { value: null },
      specularMapTransform: { value: /* @__PURE__ */ new Matrix3() }
    },
    envmap: {
      envMap: { value: null },
      flipEnvMap: { value: -1 },
      reflectivity: { value: 1 },
      // basic, lambert, phong
      ior: { value: 1.5 },
      // physical
      refractionRatio: { value: 0.98 }
      // basic, lambert, phong
    },
    aomap: {
      aoMap: { value: null },
      aoMapIntensity: { value: 1 },
      aoMapTransform: { value: /* @__PURE__ */ new Matrix3() }
    },
    lightmap: {
      lightMap: { value: null },
      lightMapIntensity: { value: 1 },
      lightMapTransform: { value: /* @__PURE__ */ new Matrix3() }
    },
    bumpmap: {
      bumpMap: { value: null },
      bumpMapTransform: { value: /* @__PURE__ */ new Matrix3() },
      bumpScale: { value: 1 }
    },
    normalmap: {
      normalMap: { value: null },
      normalMapTransform: { value: /* @__PURE__ */ new Matrix3() },
      normalScale: { value: /* @__PURE__ */ new Vector2(1, 1) }
    },
    displacementmap: {
      displacementMap: { value: null },
      displacementMapTransform: { value: /* @__PURE__ */ new Matrix3() },
      displacementScale: { value: 1 },
      displacementBias: { value: 0 }
    },
    emissivemap: {
      emissiveMap: { value: null },
      emissiveMapTransform: { value: /* @__PURE__ */ new Matrix3() }
    },
    metalnessmap: {
      metalnessMap: { value: null },
      metalnessMapTransform: { value: /* @__PURE__ */ new Matrix3() }
    },
    roughnessmap: {
      roughnessMap: { value: null },
      roughnessMapTransform: { value: /* @__PURE__ */ new Matrix3() }
    },
    gradientmap: {
      gradientMap: { value: null }
    },
    fog: {
      fogDensity: { value: 25e-5 },
      fogNear: { value: 1 },
      fogFar: { value: 2e3 },
      fogColor: { value: /* @__PURE__ */ new Color(16777215) }
    },
    lights: {
      ambientLightColor: { value: [] },
      lightProbe: { value: [] },
      directionalLights: { value: [], properties: {
        direction: {},
        color: {}
      } },
      directionalLightShadows: { value: [], properties: {
        shadowBias: {},
        shadowNormalBias: {},
        shadowRadius: {},
        shadowMapSize: {}
      } },
      directionalShadowMap: { value: [] },
      directionalShadowMatrix: { value: [] },
      spotLights: { value: [], properties: {
        color: {},
        position: {},
        direction: {},
        distance: {},
        coneCos: {},
        penumbraCos: {},
        decay: {}
      } },
      spotLightShadows: { value: [], properties: {
        shadowBias: {},
        shadowNormalBias: {},
        shadowRadius: {},
        shadowMapSize: {}
      } },
      spotLightMap: { value: [] },
      spotShadowMap: { value: [] },
      spotLightMatrix: { value: [] },
      pointLights: { value: [], properties: {
        color: {},
        position: {},
        decay: {},
        distance: {}
      } },
      pointLightShadows: { value: [], properties: {
        shadowBias: {},
        shadowNormalBias: {},
        shadowRadius: {},
        shadowMapSize: {},
        shadowCameraNear: {},
        shadowCameraFar: {}
      } },
      pointShadowMap: { value: [] },
      pointShadowMatrix: { value: [] },
      hemisphereLights: { value: [], properties: {
        direction: {},
        skyColor: {},
        groundColor: {}
      } },
      // TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src
      rectAreaLights: { value: [], properties: {
        color: {},
        position: {},
        width: {},
        height: {}
      } },
      ltc_1: { value: null },
      ltc_2: { value: null }
    },
    points: {
      diffuse: { value: /* @__PURE__ */ new Color(16777215) },
      opacity: { value: 1 },
      size: { value: 1 },
      scale: { value: 1 },
      map: { value: null },
      alphaMap: { value: null },
      alphaMapTransform: { value: /* @__PURE__ */ new Matrix3() },
      alphaTest: { value: 0 },
      uvTransform: { value: /* @__PURE__ */ new Matrix3() }
    },
    sprite: {
      diffuse: { value: /* @__PURE__ */ new Color(16777215) },
      opacity: { value: 1 },
      center: { value: /* @__PURE__ */ new Vector2(0.5, 0.5) },
      rotation: { value: 0 },
      map: { value: null },
      mapTransform: { value: /* @__PURE__ */ new Matrix3() },
      alphaMap: { value: null },
      alphaMapTransform: { value: /* @__PURE__ */ new Matrix3() },
      alphaTest: { value: 0 }
    }
  };
  var ShaderLib = {
    basic: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.specularmap,
        UniformsLib.envmap,
        UniformsLib.aomap,
        UniformsLib.lightmap,
        UniformsLib.fog
      ]),
      vertexShader: ShaderChunk.meshbasic_vert,
      fragmentShader: ShaderChunk.meshbasic_frag
    },
    lambert: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.specularmap,
        UniformsLib.envmap,
        UniformsLib.aomap,
        UniformsLib.lightmap,
        UniformsLib.emissivemap,
        UniformsLib.bumpmap,
        UniformsLib.normalmap,
        UniformsLib.displacementmap,
        UniformsLib.fog,
        UniformsLib.lights,
        {
          emissive: { value: /* @__PURE__ */ new Color(0) }
        }
      ]),
      vertexShader: ShaderChunk.meshlambert_vert,
      fragmentShader: ShaderChunk.meshlambert_frag
    },
    phong: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.specularmap,
        UniformsLib.envmap,
        UniformsLib.aomap,
        UniformsLib.lightmap,
        UniformsLib.emissivemap,
        UniformsLib.bumpmap,
        UniformsLib.normalmap,
        UniformsLib.displacementmap,
        UniformsLib.fog,
        UniformsLib.lights,
        {
          emissive: { value: /* @__PURE__ */ new Color(0) },
          specular: { value: /* @__PURE__ */ new Color(1118481) },
          shininess: { value: 30 }
        }
      ]),
      vertexShader: ShaderChunk.meshphong_vert,
      fragmentShader: ShaderChunk.meshphong_frag
    },
    standard: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.envmap,
        UniformsLib.aomap,
        UniformsLib.lightmap,
        UniformsLib.emissivemap,
        UniformsLib.bumpmap,
        UniformsLib.normalmap,
        UniformsLib.displacementmap,
        UniformsLib.roughnessmap,
        UniformsLib.metalnessmap,
        UniformsLib.fog,
        UniformsLib.lights,
        {
          emissive: { value: /* @__PURE__ */ new Color(0) },
          roughness: { value: 1 },
          metalness: { value: 0 },
          envMapIntensity: { value: 1 }
          // temporary
        }
      ]),
      vertexShader: ShaderChunk.meshphysical_vert,
      fragmentShader: ShaderChunk.meshphysical_frag
    },
    toon: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.aomap,
        UniformsLib.lightmap,
        UniformsLib.emissivemap,
        UniformsLib.bumpmap,
        UniformsLib.normalmap,
        UniformsLib.displacementmap,
        UniformsLib.gradientmap,
        UniformsLib.fog,
        UniformsLib.lights,
        {
          emissive: { value: /* @__PURE__ */ new Color(0) }
        }
      ]),
      vertexShader: ShaderChunk.meshtoon_vert,
      fragmentShader: ShaderChunk.meshtoon_frag
    },
    matcap: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.bumpmap,
        UniformsLib.normalmap,
        UniformsLib.displacementmap,
        UniformsLib.fog,
        {
          matcap: { value: null }
        }
      ]),
      vertexShader: ShaderChunk.meshmatcap_vert,
      fragmentShader: ShaderChunk.meshmatcap_frag
    },
    points: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.points,
        UniformsLib.fog
      ]),
      vertexShader: ShaderChunk.points_vert,
      fragmentShader: ShaderChunk.points_frag
    },
    dashed: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.fog,
        {
          scale: { value: 1 },
          dashSize: { value: 1 },
          totalSize: { value: 2 }
        }
      ]),
      vertexShader: ShaderChunk.linedashed_vert,
      fragmentShader: ShaderChunk.linedashed_frag
    },
    depth: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.displacementmap
      ]),
      vertexShader: ShaderChunk.depth_vert,
      fragmentShader: ShaderChunk.depth_frag
    },
    normal: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.bumpmap,
        UniformsLib.normalmap,
        UniformsLib.displacementmap,
        {
          opacity: { value: 1 }
        }
      ]),
      vertexShader: ShaderChunk.meshnormal_vert,
      fragmentShader: ShaderChunk.meshnormal_frag
    },
    sprite: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.sprite,
        UniformsLib.fog
      ]),
      vertexShader: ShaderChunk.sprite_vert,
      fragmentShader: ShaderChunk.sprite_frag
    },
    background: {
      uniforms: {
        uvTransform: { value: /* @__PURE__ */ new Matrix3() },
        t2D: { value: null },
        backgroundIntensity: { value: 1 }
      },
      vertexShader: ShaderChunk.background_vert,
      fragmentShader: ShaderChunk.background_frag
    },
    backgroundCube: {
      uniforms: {
        envMap: { value: null },
        flipEnvMap: { value: -1 },
        backgroundBlurriness: { value: 0 },
        backgroundIntensity: { value: 1 }
      },
      vertexShader: ShaderChunk.backgroundCube_vert,
      fragmentShader: ShaderChunk.backgroundCube_frag
    },
    cube: {
      uniforms: {
        tCube: { value: null },
        tFlip: { value: -1 },
        opacity: { value: 1 }
      },
      vertexShader: ShaderChunk.cube_vert,
      fragmentShader: ShaderChunk.cube_frag
    },
    equirect: {
      uniforms: {
        tEquirect: { value: null }
      },
      vertexShader: ShaderChunk.equirect_vert,
      fragmentShader: ShaderChunk.equirect_frag
    },
    distanceRGBA: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.common,
        UniformsLib.displacementmap,
        {
          referencePosition: { value: /* @__PURE__ */ new Vector3() },
          nearDistance: { value: 1 },
          farDistance: { value: 1e3 }
        }
      ]),
      vertexShader: ShaderChunk.distanceRGBA_vert,
      fragmentShader: ShaderChunk.distanceRGBA_frag
    },
    shadow: {
      uniforms: /* @__PURE__ */ mergeUniforms([
        UniformsLib.lights,
        UniformsLib.fog,
        {
          color: { value: /* @__PURE__ */ new Color(0) },
          opacity: { value: 1 }
        }
      ]),
      vertexShader: ShaderChunk.shadow_vert,
      fragmentShader: ShaderChunk.shadow_frag
    }
  };
  ShaderLib.physical = {
    uniforms: /* @__PURE__ */ mergeUniforms([
      ShaderLib.standard.uniforms,
      {
        clearcoat: { value: 0 },
        clearcoatMap: { value: null },
        clearcoatMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        clearcoatNormalMap: { value: null },
        clearcoatNormalMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        clearcoatNormalScale: { value: /* @__PURE__ */ new Vector2(1, 1) },
        clearcoatRoughness: { value: 0 },
        clearcoatRoughnessMap: { value: null },
        clearcoatRoughnessMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        iridescence: { value: 0 },
        iridescenceMap: { value: null },
        iridescenceMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        iridescenceIOR: { value: 1.3 },
        iridescenceThicknessMinimum: { value: 100 },
        iridescenceThicknessMaximum: { value: 400 },
        iridescenceThicknessMap: { value: null },
        iridescenceThicknessMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        sheen: { value: 0 },
        sheenColor: { value: /* @__PURE__ */ new Color(0) },
        sheenColorMap: { value: null },
        sheenColorMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        sheenRoughness: { value: 1 },
        sheenRoughnessMap: { value: null },
        sheenRoughnessMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        transmission: { value: 0 },
        transmissionMap: { value: null },
        transmissionMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        transmissionSamplerSize: { value: /* @__PURE__ */ new Vector2() },
        transmissionSamplerMap: { value: null },
        thickness: { value: 0 },
        thicknessMap: { value: null },
        thicknessMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        attenuationDistance: { value: 0 },
        attenuationColor: { value: /* @__PURE__ */ new Color(0) },
        specularColor: { value: /* @__PURE__ */ new Color(1, 1, 1) },
        specularColorMap: { value: null },
        specularColorMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        specularIntensity: { value: 1 },
        specularIntensityMap: { value: null },
        specularIntensityMapTransform: { value: /* @__PURE__ */ new Matrix3() },
        anisotropyVector: { value: /* @__PURE__ */ new Vector2() },
        anisotropyMap: { value: null },
        anisotropyMapTransform: { value: /* @__PURE__ */ new Matrix3() }
      }
    ]),
    vertexShader: ShaderChunk.meshphysical_vert,
    fragmentShader: ShaderChunk.meshphysical_frag
  };
  var _rgb = { r: 0, b: 0, g: 0 };
  function WebGLBackground(renderer, cubemaps, cubeuvmaps, state, objects, alpha, premultipliedAlpha) {
    const clearColor = new Color(0);
    let clearAlpha = alpha === true ? 0 : 1;
    let planeMesh;
    let boxMesh;
    let currentBackground = null;
    let currentBackgroundVersion = 0;
    let currentTonemapping = null;
    function render(renderList, scene) {
      let forceClear = false;
      let background = scene.isScene === true ? scene.background : null;
      if (background && background.isTexture) {
        const usePMREM = scene.backgroundBlurriness > 0;
        background = (usePMREM ? cubeuvmaps : cubemaps).get(background);
      }
      if (background === null) {
        setClear(clearColor, clearAlpha);
      } else if (background && background.isColor) {
        setClear(background, 1);
        forceClear = true;
      }
      const environmentBlendMode = renderer.xr.getEnvironmentBlendMode();
      if (environmentBlendMode === "additive") {
        state.buffers.color.setClear(0, 0, 0, 1, premultipliedAlpha);
      } else if (environmentBlendMode === "alpha-blend") {
        state.buffers.color.setClear(0, 0, 0, 0, premultipliedAlpha);
      }
      if (renderer.autoClear || forceClear) {
        renderer.clear(renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil);
      }
      if (background && (background.isCubeTexture || background.mapping === CubeUVReflectionMapping)) {
        if (boxMesh === void 0) {
          boxMesh = new Mesh(
            new BoxGeometry(1, 1, 1),
            new ShaderMaterial({
              name: "BackgroundCubeMaterial",
              uniforms: cloneUniforms(ShaderLib.backgroundCube.uniforms),
              vertexShader: ShaderLib.backgroundCube.vertexShader,
              fragmentShader: ShaderLib.backgroundCube.fragmentShader,
              side: BackSide,
              depthTest: false,
              depthWrite: false,
              fog: false
            })
          );
          boxMesh.geometry.deleteAttribute("normal");
          boxMesh.geometry.deleteAttribute("uv");
          boxMesh.onBeforeRender = function(renderer2, scene2, camera) {
            this.matrixWorld.copyPosition(camera.matrixWorld);
          };
          Object.defineProperty(boxMesh.material, "envMap", {
            get: function() {
              return this.uniforms.envMap.value;
            }
          });
          objects.update(boxMesh);
        }
        boxMesh.material.uniforms.envMap.value = background;
        boxMesh.material.uniforms.flipEnvMap.value = background.isCubeTexture && background.isRenderTargetTexture === false ? -1 : 1;
        boxMesh.material.uniforms.backgroundBlurriness.value = scene.backgroundBlurriness;
        boxMesh.material.uniforms.backgroundIntensity.value = scene.backgroundIntensity;
        boxMesh.material.toneMapped = ColorManagement.getTransfer(background.colorSpace) !== SRGBTransfer;
        if (currentBackground !== background || currentBackgroundVersion !== background.version || currentTonemapping !== renderer.toneMapping) {
          boxMesh.material.needsUpdate = true;
          currentBackground = background;
          currentBackgroundVersion = background.version;
          currentTonemapping = renderer.toneMapping;
        }
        boxMesh.layers.enableAll();
        renderList.unshift(boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null);
      } else if (background && background.isTexture) {
        if (planeMesh === void 0) {
          planeMesh = new Mesh(
            new PlaneGeometry(2, 2),
            new ShaderMaterial({
              name: "BackgroundMaterial",
              uniforms: cloneUniforms(ShaderLib.background.uniforms),
              vertexShader: ShaderLib.background.vertexShader,
              fragmentShader: ShaderLib.background.fragmentShader,
              side: FrontSide,
              depthTest: false,
              depthWrite: false,
              fog: false
            })
          );
          planeMesh.geometry.deleteAttribute("normal");
          Object.defineProperty(planeMesh.material, "map", {
            get: function() {
              return this.uniforms.t2D.value;
            }
          });
          objects.update(planeMesh);
        }
        planeMesh.material.uniforms.t2D.value = background;
        planeMesh.material.uniforms.backgroundIntensity.value = scene.backgroundIntensity;
        planeMesh.material.toneMapped = ColorManagement.getTransfer(background.colorSpace) !== SRGBTransfer;
        if (background.matrixAutoUpdate === true) {
          background.updateMatrix();
        }
        planeMesh.material.uniforms.uvTransform.value.copy(background.matrix);
        if (currentBackground !== background || currentBackgroundVersion !== background.version || currentTonemapping !== renderer.toneMapping) {
          planeMesh.material.needsUpdate = true;
          currentBackground = background;
          currentBackgroundVersion = background.version;
          currentTonemapping = renderer.toneMapping;
        }
        planeMesh.layers.enableAll();
        renderList.unshift(planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null);
      }
    }
    function setClear(color, alpha2) {
      color.getRGB(_rgb, getUnlitUniformColorSpace(renderer));
      state.buffers.color.setClear(_rgb.r, _rgb.g, _rgb.b, alpha2, premultipliedAlpha);
    }
    return {
      getClearColor: function() {
        return clearColor;
      },
      setClearColor: function(color, alpha2 = 1) {
        clearColor.set(color);
        clearAlpha = alpha2;
        setClear(clearColor, clearAlpha);
      },
      getClearAlpha: function() {
        return clearAlpha;
      },
      setClearAlpha: function(alpha2) {
        clearAlpha = alpha2;
        setClear(clearColor, clearAlpha);
      },
      render
    };
  }
  function WebGLBindingStates(gl, extensions, attributes, capabilities) {
    const maxVertexAttributes = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
    const extension = capabilities.isWebGL2 ? null : extensions.get("OES_vertex_array_object");
    const vaoAvailable = capabilities.isWebGL2 || extension !== null;
    const bindingStates = {};
    const defaultState = createBindingState(null);
    let currentState = defaultState;
    let forceUpdate = false;
    function setup(object, material, program, geometry, index) {
      let updateBuffers = false;
      if (vaoAvailable) {
        const state = getBindingState(geometry, program, material);
        if (currentState !== state) {
          currentState = state;
          bindVertexArrayObject(currentState.object);
        }
        updateBuffers = needsUpdate(object, geometry, program, index);
        if (updateBuffers) saveCache(object, geometry, program, index);
      } else {
        const wireframe = material.wireframe === true;
        if (currentState.geometry !== geometry.id || currentState.program !== program.id || currentState.wireframe !== wireframe) {
          currentState.geometry = geometry.id;
          currentState.program = program.id;
          currentState.wireframe = wireframe;
          updateBuffers = true;
        }
      }
      if (index !== null) {
        attributes.update(index, gl.ELEMENT_ARRAY_BUFFER);
      }
      if (updateBuffers || forceUpdate) {
        forceUpdate = false;
        setupVertexAttributes(object, material, program, geometry);
        if (index !== null) {
          gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, attributes.get(index).buffer);
        }
      }
    }
    function createVertexArrayObject() {
      if (capabilities.isWebGL2) return gl.createVertexArray();
      return extension.createVertexArrayOES();
    }
    function bindVertexArrayObject(vao) {
      if (capabilities.isWebGL2) return gl.bindVertexArray(vao);
      return extension.bindVertexArrayOES(vao);
    }
    function deleteVertexArrayObject(vao) {
      if (capabilities.isWebGL2) return gl.deleteVertexArray(vao);
      return extension.deleteVertexArrayOES(vao);
    }
    function getBindingState(geometry, program, material) {
      const wireframe = material.wireframe === true;
      let programMap = bindingStates[geometry.id];
      if (programMap === void 0) {
        programMap = {};
        bindingStates[geometry.id] = programMap;
      }
      let stateMap = programMap[program.id];
      if (stateMap === void 0) {
        stateMap = {};
        programMap[program.id] = stateMap;
      }
      let state = stateMap[wireframe];
      if (state === void 0) {
        state = createBindingState(createVertexArrayObject());
        stateMap[wireframe] = state;
      }
      return state;
    }
    function createBindingState(vao) {
      const newAttributes = [];
      const enabledAttributes = [];
      const attributeDivisors = [];
      for (let i = 0; i < maxVertexAttributes; i++) {
        newAttributes[i] = 0;
        enabledAttributes[i] = 0;
        attributeDivisors[i] = 0;
      }
      return {
        // for backward compatibility on non-VAO support browser
        geometry: null,
        program: null,
        wireframe: false,
        newAttributes,
        enabledAttributes,
        attributeDivisors,
        object: vao,
        attributes: {},
        index: null
      };
    }
    function needsUpdate(object, geometry, program, index) {
      const cachedAttributes = currentState.attributes;
      const geometryAttributes = geometry.attributes;
      let attributesNum = 0;
      const programAttributes = program.getAttributes();
      for (const name in programAttributes) {
        const programAttribute = programAttributes[name];
        if (programAttribute.location >= 0) {
          const cachedAttribute = cachedAttributes[name];
          let geometryAttribute = geometryAttributes[name];
          if (geometryAttribute === void 0) {
            if (name === "instanceMatrix" && object.instanceMatrix) geometryAttribute = object.instanceMatrix;
            if (name === "instanceColor" && object.instanceColor) geometryAttribute = object.instanceColor;
          }
          if (cachedAttribute === void 0) return true;
          if (cachedAttribute.attribute !== geometryAttribute) return true;
          if (geometryAttribute && cachedAttribute.data !== geometryAttribute.data) return true;
          attributesNum++;
        }
      }
      if (currentState.attributesNum !== attributesNum) return true;
      if (currentState.index !== index) return true;
      return false;
    }
    function saveCache(object, geometry, program, index) {
      const cache = {};
      const attributes2 = geometry.attributes;
      let attributesNum = 0;
      const programAttributes = program.getAttributes();
      for (const name in programAttributes) {
        const programAttribute = programAttributes[name];
        if (programAttribute.location >= 0) {
          let attribute = attributes2[name];
          if (attribute === void 0) {
            if (name === "instanceMatrix" && object.instanceMatrix) attribute = object.instanceMatrix;
            if (name === "instanceColor" && object.instanceColor) attribute = object.instanceColor;
          }
          const data = {};
          data.attribute = attribute;
          if (attribute && attribute.data) {
            data.data = attribute.data;
          }
          cache[name] = data;
          attributesNum++;
        }
      }
      currentState.attributes = cache;
      currentState.attributesNum = attributesNum;
      currentState.index = index;
    }
    function initAttributes() {
      const newAttributes = currentState.newAttributes;
      for (let i = 0, il = newAttributes.length; i < il; i++) {
        newAttributes[i] = 0;
      }
    }
    function enableAttribute(attribute) {
      enableAttributeAndDivisor(attribute, 0);
    }
    function enableAttributeAndDivisor(attribute, meshPerAttribute) {
      const newAttributes = currentState.newAttributes;
      const enabledAttributes = currentState.enabledAttributes;
      const attributeDivisors = currentState.attributeDivisors;
      newAttributes[attribute] = 1;
      if (enabledAttributes[attribute] === 0) {
        gl.enableVertexAttribArray(attribute);
        enabledAttributes[attribute] = 1;
      }
      if (attributeDivisors[attribute] !== meshPerAttribute) {
        const extension2 = capabilities.isWebGL2 ? gl : extensions.get("ANGLE_instanced_arrays");
        extension2[capabilities.isWebGL2 ? "vertexAttribDivisor" : "vertexAttribDivisorANGLE"](attribute, meshPerAttribute);
        attributeDivisors[attribute] = meshPerAttribute;
      }
    }
    function disableUnusedAttributes() {
      const newAttributes = currentState.newAttributes;
      const enabledAttributes = currentState.enabledAttributes;
      for (let i = 0, il = enabledAttributes.length; i < il; i++) {
        if (enabledAttributes[i] !== newAttributes[i]) {
          gl.disableVertexAttribArray(i);
          enabledAttributes[i] = 0;
        }
      }
    }
    function vertexAttribPointer(index, size, type, normalized, stride, offset, integer) {
      if (integer === true) {
        gl.vertexAttribIPointer(index, size, type, stride, offset);
      } else {
        gl.vertexAttribPointer(index, size, type, normalized, stride, offset);
      }
    }
    function setupVertexAttributes(object, material, program, geometry) {
      if (capabilities.isWebGL2 === false && (object.isInstancedMesh || geometry.isInstancedBufferGeometry)) {
        if (extensions.get("ANGLE_instanced_arrays") === null) return;
      }
      initAttributes();
      const geometryAttributes = geometry.attributes;
      const programAttributes = program.getAttributes();
      const materialDefaultAttributeValues = material.defaultAttributeValues;
      for (const name in programAttributes) {
        const programAttribute = programAttributes[name];
        if (programAttribute.location >= 0) {
          let geometryAttribute = geometryAttributes[name];
          if (geometryAttribute === void 0) {
            if (name === "instanceMatrix" && object.instanceMatrix) geometryAttribute = object.instanceMatrix;
            if (name === "instanceColor" && object.instanceColor) geometryAttribute = object.instanceColor;
          }
          if (geometryAttribute !== void 0) {
            const normalized = geometryAttribute.normalized;
            const size = geometryAttribute.itemSize;
            const attribute = attributes.get(geometryAttribute);
            if (attribute === void 0) continue;
            const buffer = attribute.buffer;
            const type = attribute.type;
            const bytesPerElement = attribute.bytesPerElement;
            const integer = capabilities.isWebGL2 === true && (type === gl.INT || type === gl.UNSIGNED_INT || geometryAttribute.gpuType === IntType);
            if (geometryAttribute.isInterleavedBufferAttribute) {
              const data = geometryAttribute.data;
              const stride = data.stride;
              const offset = geometryAttribute.offset;
              if (data.isInstancedInterleavedBuffer) {
                for (let i = 0; i < programAttribute.locationSize; i++) {
                  enableAttributeAndDivisor(programAttribute.location + i, data.meshPerAttribute);
                }
                if (object.isInstancedMesh !== true && geometry._maxInstanceCount === void 0) {
                  geometry._maxInstanceCount = data.meshPerAttribute * data.count;
                }
              } else {
                for (let i = 0; i < programAttribute.locationSize; i++) {
                  enableAttribute(programAttribute.location + i);
                }
              }
              gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
              for (let i = 0; i < programAttribute.locationSize; i++) {
                vertexAttribPointer(
                  programAttribute.location + i,
                  size / programAttribute.locationSize,
                  type,
                  normalized,
                  stride * bytesPerElement,
                  (offset + size / programAttribute.locationSize * i) * bytesPerElement,
                  integer
                );
              }
            } else {
              if (geometryAttribute.isInstancedBufferAttribute) {
                for (let i = 0; i < programAttribute.locationSize; i++) {
                  enableAttributeAndDivisor(programAttribute.location + i, geometryAttribute.meshPerAttribute);
                }
                if (object.isInstancedMesh !== true && geometry._maxInstanceCount === void 0) {
                  geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;
                }
              } else {
                for (let i = 0; i < programAttribute.locationSize; i++) {
                  enableAttribute(programAttribute.location + i);
                }
              }
              gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
              for (let i = 0; i < programAttribute.locationSize; i++) {
                vertexAttribPointer(
                  programAttribute.location + i,
                  size / programAttribute.locationSize,
                  type,
                  normalized,
                  size * bytesPerElement,
                  size / programAttribute.locationSize * i * bytesPerElement,
                  integer
                );
              }
            }
          } else if (materialDefaultAttributeValues !== void 0) {
            const value = materialDefaultAttributeValues[name];
            if (value !== void 0) {
              switch (value.length) {
                case 2:
                  gl.vertexAttrib2fv(programAttribute.location, value);
                  break;
                case 3:
                  gl.vertexAttrib3fv(programAttribute.location, value);
                  break;
                case 4:
                  gl.vertexAttrib4fv(programAttribute.location, value);
                  break;
                default:
                  gl.vertexAttrib1fv(programAttribute.location, value);
              }
            }
          }
        }
      }
      disableUnusedAttributes();
    }
    function dispose() {
      reset();
      for (const geometryId in bindingStates) {
        const programMap = bindingStates[geometryId];
        for (const programId in programMap) {
          const stateMap = programMap[programId];
          for (const wireframe in stateMap) {
            deleteVertexArrayObject(stateMap[wireframe].object);
            delete stateMap[wireframe];
          }
          delete programMap[programId];
        }
        delete bindingStates[geometryId];
      }
    }
    function releaseStatesOfGeometry(geometry) {
      if (bindingStates[geometry.id] === void 0) return;
      const programMap = bindingStates[geometry.id];
      for (const programId in programMap) {
        const stateMap = programMap[programId];
        for (const wireframe in stateMap) {
          deleteVertexArrayObject(stateMap[wireframe].object);
          delete stateMap[wireframe];
        }
        delete programMap[programId];
      }
      delete bindingStates[geometry.id];
    }
    function releaseStatesOfProgram(program) {
      for (const geometryId in bindingStates) {
        const programMap = bindingStates[geometryId];
        if (programMap[program.id] === void 0) continue;
        const stateMap = programMap[program.id];
        for (const wireframe in stateMap) {
          deleteVertexArrayObject(stateMap[wireframe].object);
          delete stateMap[wireframe];
        }
        delete programMap[program.id];
      }
    }
    function reset() {
      resetDefaultState();
      forceUpdate = true;
      if (currentState === defaultState) return;
      currentState = defaultState;
      bindVertexArrayObject(currentState.object);
    }
    function resetDefaultState() {
      defaultState.geometry = null;
      defaultState.program = null;
      defaultState.wireframe = false;
    }
    return {
      setup,
      reset,
      resetDefaultState,
      dispose,
      releaseStatesOfGeometry,
      releaseStatesOfProgram,
      initAttributes,
      enableAttribute,
      disableUnusedAttributes
    };
  }
  function WebGLBufferRenderer(gl, extensions, info, capabilities) {
    const isWebGL2 = capabilities.isWebGL2;
    let mode;
    function setMode(value) {
      mode = value;
    }
    function render(start, count) {
      gl.drawArrays(mode, start, count);
      info.update(count, mode, 1);
    }
    function renderInstances(start, count, primcount) {
      if (primcount === 0) return;
      let extension, methodName;
      if (isWebGL2) {
        extension = gl;
        methodName = "drawArraysInstanced";
      } else {
        extension = extensions.get("ANGLE_instanced_arrays");
        methodName = "drawArraysInstancedANGLE";
        if (extension === null) {
          console.error("THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.");
          return;
        }
      }
      extension[methodName](mode, start, count, primcount);
      info.update(count, mode, primcount);
    }
    function renderMultiDraw(starts, counts, drawCount) {
      if (drawCount === 0) return;
      const extension = extensions.get("WEBGL_multi_draw");
      if (extension === null) {
        for (let i = 0; i < drawCount; i++) {
          this.render(starts[i], counts[i]);
        }
      } else {
        extension.multiDrawArraysWEBGL(mode, starts, 0, counts, 0, drawCount);
        let elementCount = 0;
        for (let i = 0; i < drawCount; i++) {
          elementCount += counts[i];
        }
        info.update(elementCount, mode, 1);
      }
    }
    this.setMode = setMode;
    this.render = render;
    this.renderInstances = renderInstances;
    this.renderMultiDraw = renderMultiDraw;
  }
  function WebGLCapabilities(gl, extensions, parameters) {
    let maxAnisotropy;
    function getMaxAnisotropy() {
      if (maxAnisotropy !== void 0) return maxAnisotropy;
      if (extensions.has("EXT_texture_filter_anisotropic") === true) {
        const extension = extensions.get("EXT_texture_filter_anisotropic");
        maxAnisotropy = gl.getParameter(extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT);
      } else {
        maxAnisotropy = 0;
      }
      return maxAnisotropy;
    }
    function getMaxPrecision(precision2) {
      if (precision2 === "highp") {
        if (gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_FLOAT).precision > 0 && gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT).precision > 0) {
          return "highp";
        }
        precision2 = "mediump";
      }
      if (precision2 === "mediump") {
        if (gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT).precision > 0 && gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT).precision > 0) {
          return "mediump";
        }
      }
      return "lowp";
    }
    const isWebGL2 = typeof WebGL2RenderingContext !== "undefined" && gl.constructor.name === "WebGL2RenderingContext";
    let precision = parameters.precision !== void 0 ? parameters.precision : "highp";
    const maxPrecision = getMaxPrecision(precision);
    if (maxPrecision !== precision) {
      console.warn("THREE.WebGLRenderer:", precision, "not supported, using", maxPrecision, "instead.");
      precision = maxPrecision;
    }
    const drawBuffers = isWebGL2 || extensions.has("WEBGL_draw_buffers");
    const logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;
    const maxTextures = gl.getParameter(gl.MAX_TEXTURE_IMAGE_UNITS);
    const maxVertexTextures = gl.getParameter(gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS);
    const maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE);
    const maxCubemapSize = gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE);
    const maxAttributes = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
    const maxVertexUniforms = gl.getParameter(gl.MAX_VERTEX_UNIFORM_VECTORS);
    const maxVaryings = gl.getParameter(gl.MAX_VARYING_VECTORS);
    const maxFragmentUniforms = gl.getParameter(gl.MAX_FRAGMENT_UNIFORM_VECTORS);
    const vertexTextures = maxVertexTextures > 0;
    const floatFragmentTextures = isWebGL2 || extensions.has("OES_texture_float");
    const floatVertexTextures = vertexTextures && floatFragmentTextures;
    const maxSamples = isWebGL2 ? gl.getParameter(gl.MAX_SAMPLES) : 0;
    return {
      isWebGL2,
      drawBuffers,
      getMaxAnisotropy,
      getMaxPrecision,
      precision,
      logarithmicDepthBuffer,
      maxTextures,
      maxVertexTextures,
      maxTextureSize,
      maxCubemapSize,
      maxAttributes,
      maxVertexUniforms,
      maxVaryings,
      maxFragmentUniforms,
      vertexTextures,
      floatFragmentTextures,
      floatVertexTextures,
      maxSamples
    };
  }
  function WebGLClipping(properties) {
    const scope = this;
    let globalState = null, numGlobalPlanes = 0, localClippingEnabled = false, renderingShadows = false;
    const plane = new Plane(), viewNormalMatrix = new Matrix3(), uniform = { value: null, needsUpdate: false };
    this.uniform = uniform;
    this.numPlanes = 0;
    this.numIntersection = 0;
    this.init = function(planes, enableLocalClipping) {
      const enabled = planes.length !== 0 || enableLocalClipping || // enable state of previous frame - the clipping code has to
      // run another frame in order to reset the state:
      numGlobalPlanes !== 0 || localClippingEnabled;
      localClippingEnabled = enableLocalClipping;
      numGlobalPlanes = planes.length;
      return enabled;
    };
    this.beginShadows = function() {
      renderingShadows = true;
      projectPlanes(null);
    };
    this.endShadows = function() {
      renderingShadows = false;
    };
    this.setGlobalState = function(planes, camera) {
      globalState = projectPlanes(planes, camera, 0);
    };
    this.setState = function(material, camera, useCache) {
      const planes = material.clippingPlanes, clipIntersection = material.clipIntersection, clipShadows = material.clipShadows;
      const materialProperties = properties.get(material);
      if (!localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && !clipShadows) {
        if (renderingShadows) {
          projectPlanes(null);
        } else {
          resetGlobalState();
        }
      } else {
        const nGlobal = renderingShadows ? 0 : numGlobalPlanes, lGlobal = nGlobal * 4;
        let dstArray = materialProperties.clippingState || null;
        uniform.value = dstArray;
        dstArray = projectPlanes(planes, camera, lGlobal, useCache);
        for (let i = 0; i !== lGlobal; ++i) {
          dstArray[i] = globalState[i];
        }
        materialProperties.clippingState = dstArray;
        this.numIntersection = clipIntersection ? this.numPlanes : 0;
        this.numPlanes += nGlobal;
      }
    };
    function resetGlobalState() {
      if (uniform.value !== globalState) {
        uniform.value = globalState;
        uniform.needsUpdate = numGlobalPlanes > 0;
      }
      scope.numPlanes = numGlobalPlanes;
      scope.numIntersection = 0;
    }
    function projectPlanes(planes, camera, dstOffset, skipTransform) {
      const nPlanes = planes !== null ? planes.length : 0;
      let dstArray = null;
      if (nPlanes !== 0) {
        dstArray = uniform.value;
        if (skipTransform !== true || dstArray === null) {
          const flatSize = dstOffset + nPlanes * 4, viewMatrix = camera.matrixWorldInverse;
          viewNormalMatrix.getNormalMatrix(viewMatrix);
          if (dstArray === null || dstArray.length < flatSize) {
            dstArray = new Float32Array(flatSize);
          }
          for (let i = 0, i4 = dstOffset; i !== nPlanes; ++i, i4 += 4) {
            plane.copy(planes[i]).applyMatrix4(viewMatrix, viewNormalMatrix);
            plane.normal.toArray(dstArray, i4);
            dstArray[i4 + 3] = plane.constant;
          }
        }
        uniform.value = dstArray;
        uniform.needsUpdate = true;
      }
      scope.numPlanes = nPlanes;
      scope.numIntersection = 0;
      return dstArray;
    }
  }
  function WebGLCubeMaps(renderer) {
    let cubemaps = /* @__PURE__ */ new WeakMap();
    function mapTextureMapping(texture, mapping) {
      if (mapping === EquirectangularReflectionMapping) {
        texture.mapping = CubeReflectionMapping;
      } else if (mapping === EquirectangularRefractionMapping) {
        texture.mapping = CubeRefractionMapping;
      }
      return texture;
    }
    function get(texture) {
      if (texture && texture.isTexture) {
        const mapping = texture.mapping;
        if (mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping) {
          if (cubemaps.has(texture)) {
            const cubemap = cubemaps.get(texture).texture;
            return mapTextureMapping(cubemap, texture.mapping);
          } else {
            const image = texture.image;
            if (image && image.height > 0) {
              const renderTarget = new WebGLCubeRenderTarget(image.height / 2);
              renderTarget.fromEquirectangularTexture(renderer, texture);
              cubemaps.set(texture, renderTarget);
              texture.addEventListener("dispose", onTextureDispose);
              return mapTextureMapping(renderTarget.texture, texture.mapping);
            } else {
              return null;
            }
          }
        }
      }
      return texture;
    }
    function onTextureDispose(event) {
      const texture = event.target;
      texture.removeEventListener("dispose", onTextureDispose);
      const cubemap = cubemaps.get(texture);
      if (cubemap !== void 0) {
        cubemaps.delete(texture);
        cubemap.dispose();
      }
    }
    function dispose() {
      cubemaps = /* @__PURE__ */ new WeakMap();
    }
    return {
      get,
      dispose
    };
  }
  var OrthographicCamera = class extends Camera {
    constructor(left = -1, right = 1, top = 1, bottom = -1, near = 0.1, far = 2e3) {
      super();
      this.isOrthographicCamera = true;
      this.type = "OrthographicCamera";
      this.zoom = 1;
      this.view = null;
      this.left = left;
      this.right = right;
      this.top = top;
      this.bottom = bottom;
      this.near = near;
      this.far = far;
      this.updateProjectionMatrix();
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.left = source.left;
      this.right = source.right;
      this.top = source.top;
      this.bottom = source.bottom;
      this.near = source.near;
      this.far = source.far;
      this.zoom = source.zoom;
      this.view = source.view === null ? null : Object.assign({}, source.view);
      return this;
    }
    setViewOffset(fullWidth, fullHeight, x, y, width, height) {
      if (this.view === null) {
        this.view = {
          enabled: true,
          fullWidth: 1,
          fullHeight: 1,
          offsetX: 0,
          offsetY: 0,
          width: 1,
          height: 1
        };
      }
      this.view.enabled = true;
      this.view.fullWidth = fullWidth;
      this.view.fullHeight = fullHeight;
      this.view.offsetX = x;
      this.view.offsetY = y;
      this.view.width = width;
      this.view.height = height;
      this.updateProjectionMatrix();
    }
    clearViewOffset() {
      if (this.view !== null) {
        this.view.enabled = false;
      }
      this.updateProjectionMatrix();
    }
    updateProjectionMatrix() {
      const dx = (this.right - this.left) / (2 * this.zoom);
      const dy = (this.top - this.bottom) / (2 * this.zoom);
      const cx = (this.right + this.left) / 2;
      const cy = (this.top + this.bottom) / 2;
      let left = cx - dx;
      let right = cx + dx;
      let top = cy + dy;
      let bottom = cy - dy;
      if (this.view !== null && this.view.enabled) {
        const scaleW = (this.right - this.left) / this.view.fullWidth / this.zoom;
        const scaleH = (this.top - this.bottom) / this.view.fullHeight / this.zoom;
        left += scaleW * this.view.offsetX;
        right = left + scaleW * this.view.width;
        top -= scaleH * this.view.offsetY;
        bottom = top - scaleH * this.view.height;
      }
      this.projectionMatrix.makeOrthographic(left, right, top, bottom, this.near, this.far, this.coordinateSystem);
      this.projectionMatrixInverse.copy(this.projectionMatrix).invert();
    }
    toJSON(meta) {
      const data = super.toJSON(meta);
      data.object.zoom = this.zoom;
      data.object.left = this.left;
      data.object.right = this.right;
      data.object.top = this.top;
      data.object.bottom = this.bottom;
      data.object.near = this.near;
      data.object.far = this.far;
      if (this.view !== null) data.object.view = Object.assign({}, this.view);
      return data;
    }
  };
  var LOD_MIN = 4;
  var EXTRA_LOD_SIGMA = [0.125, 0.215, 0.35, 0.446, 0.526, 0.582];
  var MAX_SAMPLES = 20;
  var _flatCamera = /* @__PURE__ */ new OrthographicCamera();
  var _clearColor = /* @__PURE__ */ new Color();
  var _oldTarget = null;
  var _oldActiveCubeFace = 0;
  var _oldActiveMipmapLevel = 0;
  var PHI = (1 + Math.sqrt(5)) / 2;
  var INV_PHI = 1 / PHI;
  var _axisDirections = [
    /* @__PURE__ */ new Vector3(1, 1, 1),
    /* @__PURE__ */ new Vector3(-1, 1, 1),
    /* @__PURE__ */ new Vector3(1, 1, -1),
    /* @__PURE__ */ new Vector3(-1, 1, -1),
    /* @__PURE__ */ new Vector3(0, PHI, INV_PHI),
    /* @__PURE__ */ new Vector3(0, PHI, -INV_PHI),
    /* @__PURE__ */ new Vector3(INV_PHI, 0, PHI),
    /* @__PURE__ */ new Vector3(-INV_PHI, 0, PHI),
    /* @__PURE__ */ new Vector3(PHI, INV_PHI, 0),
    /* @__PURE__ */ new Vector3(-PHI, INV_PHI, 0)
  ];
  var PMREMGenerator = class {
    constructor(renderer) {
      this._renderer = renderer;
      this._pingPongRenderTarget = null;
      this._lodMax = 0;
      this._cubeSize = 0;
      this._lodPlanes = [];
      this._sizeLods = [];
      this._sigmas = [];
      this._blurMaterial = null;
      this._cubemapMaterial = null;
      this._equirectMaterial = null;
      this._compileMaterial(this._blurMaterial);
    }
    /**
     * Generates a PMREM from a supplied Scene, which can be faster than using an
     * image if networking bandwidth is low. Optional sigma specifies a blur radius
     * in radians to be applied to the scene before PMREM generation. Optional near
     * and far planes ensure the scene is rendered in its entirety (the cubeCamera
     * is placed at the origin).
     */
    fromScene(scene, sigma = 0, near = 0.1, far = 100) {
      _oldTarget = this._renderer.getRenderTarget();
      _oldActiveCubeFace = this._renderer.getActiveCubeFace();
      _oldActiveMipmapLevel = this._renderer.getActiveMipmapLevel();
      this._setSize(256);
      const cubeUVRenderTarget = this._allocateTargets();
      cubeUVRenderTarget.depthBuffer = true;
      this._sceneToCubeUV(scene, near, far, cubeUVRenderTarget);
      if (sigma > 0) {
        this._blur(cubeUVRenderTarget, 0, 0, sigma);
      }
      this._applyPMREM(cubeUVRenderTarget);
      this._cleanup(cubeUVRenderTarget);
      return cubeUVRenderTarget;
    }
    /**
     * Generates a PMREM from an equirectangular texture, which can be either LDR
     * or HDR. The ideal input image size is 1k (1024 x 512),
     * as this matches best with the 256 x 256 cubemap output.
     */
    fromEquirectangular(equirectangular, renderTarget = null) {
      return this._fromTexture(equirectangular, renderTarget);
    }
    /**
     * Generates a PMREM from an cubemap texture, which can be either LDR
     * or HDR. The ideal input cube size is 256 x 256,
     * as this matches best with the 256 x 256 cubemap output.
     */
    fromCubemap(cubemap, renderTarget = null) {
      return this._fromTexture(cubemap, renderTarget);
    }
    /**
     * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during
     * your texture's network fetch for increased concurrency.
     */
    compileCubemapShader() {
      if (this._cubemapMaterial === null) {
        this._cubemapMaterial = _getCubemapMaterial();
        this._compileMaterial(this._cubemapMaterial);
      }
    }
    /**
     * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during
     * your texture's network fetch for increased concurrency.
     */
    compileEquirectangularShader() {
      if (this._equirectMaterial === null) {
        this._equirectMaterial = _getEquirectMaterial();
        this._compileMaterial(this._equirectMaterial);
      }
    }
    /**
     * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,
     * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on
     * one of them will cause any others to also become unusable.
     */
    dispose() {
      this._dispose();
      if (this._cubemapMaterial !== null) this._cubemapMaterial.dispose();
      if (this._equirectMaterial !== null) this._equirectMaterial.dispose();
    }
    // private interface
    _setSize(cubeSize) {
      this._lodMax = Math.floor(Math.log2(cubeSize));
      this._cubeSize = Math.pow(2, this._lodMax);
    }
    _dispose() {
      if (this._blurMaterial !== null) this._blurMaterial.dispose();
      if (this._pingPongRenderTarget !== null) this._pingPongRenderTarget.dispose();
      for (let i = 0; i < this._lodPlanes.length; i++) {
        this._lodPlanes[i].dispose();
      }
    }
    _cleanup(outputTarget) {
      this._renderer.setRenderTarget(_oldTarget, _oldActiveCubeFace, _oldActiveMipmapLevel);
      outputTarget.scissorTest = false;
      _setViewport(outputTarget, 0, 0, outputTarget.width, outputTarget.height);
    }
    _fromTexture(texture, renderTarget) {
      if (texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping) {
        this._setSize(texture.image.length === 0 ? 16 : texture.image[0].width || texture.image[0].image.width);
      } else {
        this._setSize(texture.image.width / 4);
      }
      _oldTarget = this._renderer.getRenderTarget();
      _oldActiveCubeFace = this._renderer.getActiveCubeFace();
      _oldActiveMipmapLevel = this._renderer.getActiveMipmapLevel();
      const cubeUVRenderTarget = renderTarget || this._allocateTargets();
      this._textureToCubeUV(texture, cubeUVRenderTarget);
      this._applyPMREM(cubeUVRenderTarget);
      this._cleanup(cubeUVRenderTarget);
      return cubeUVRenderTarget;
    }
    _allocateTargets() {
      const width = 3 * Math.max(this._cubeSize, 16 * 7);
      const height = 4 * this._cubeSize;
      const params = {
        magFilter: LinearFilter,
        minFilter: LinearFilter,
        generateMipmaps: false,
        type: HalfFloatType,
        format: RGBAFormat,
        colorSpace: LinearSRGBColorSpace,
        depthBuffer: false
      };
      const cubeUVRenderTarget = _createRenderTarget(width, height, params);
      if (this._pingPongRenderTarget === null || this._pingPongRenderTarget.width !== width || this._pingPongRenderTarget.height !== height) {
        if (this._pingPongRenderTarget !== null) {
          this._dispose();
        }
        this._pingPongRenderTarget = _createRenderTarget(width, height, params);
        const { _lodMax } = this;
        ({ sizeLods: this._sizeLods, lodPlanes: this._lodPlanes, sigmas: this._sigmas } = _createPlanes(_lodMax));
        this._blurMaterial = _getBlurShader(_lodMax, width, height);
      }
      return cubeUVRenderTarget;
    }
    _compileMaterial(material) {
      const tmpMesh = new Mesh(this._lodPlanes[0], material);
      this._renderer.compile(tmpMesh, _flatCamera);
    }
    _sceneToCubeUV(scene, near, far, cubeUVRenderTarget) {
      const fov2 = 90;
      const aspect2 = 1;
      const cubeCamera = new PerspectiveCamera(fov2, aspect2, near, far);
      const upSign = [1, -1, 1, 1, 1, 1];
      const forwardSign = [1, 1, 1, -1, -1, -1];
      const renderer = this._renderer;
      const originalAutoClear = renderer.autoClear;
      const toneMapping = renderer.toneMapping;
      renderer.getClearColor(_clearColor);
      renderer.toneMapping = NoToneMapping;
      renderer.autoClear = false;
      const backgroundMaterial = new MeshBasicMaterial({
        name: "PMREM.Background",
        side: BackSide,
        depthWrite: false,
        depthTest: false
      });
      const backgroundBox = new Mesh(new BoxGeometry(), backgroundMaterial);
      let useSolidColor = false;
      const background = scene.background;
      if (background) {
        if (background.isColor) {
          backgroundMaterial.color.copy(background);
          scene.background = null;
          useSolidColor = true;
        }
      } else {
        backgroundMaterial.color.copy(_clearColor);
        useSolidColor = true;
      }
      for (let i = 0; i < 6; i++) {
        const col = i % 3;
        if (col === 0) {
          cubeCamera.up.set(0, upSign[i], 0);
          cubeCamera.lookAt(forwardSign[i], 0, 0);
        } else if (col === 1) {
          cubeCamera.up.set(0, 0, upSign[i]);
          cubeCamera.lookAt(0, forwardSign[i], 0);
        } else {
          cubeCamera.up.set(0, upSign[i], 0);
          cubeCamera.lookAt(0, 0, forwardSign[i]);
        }
        const size = this._cubeSize;
        _setViewport(cubeUVRenderTarget, col * size, i > 2 ? size : 0, size, size);
        renderer.setRenderTarget(cubeUVRenderTarget);
        if (useSolidColor) {
          renderer.render(backgroundBox, cubeCamera);
        }
        renderer.render(scene, cubeCamera);
      }
      backgroundBox.geometry.dispose();
      backgroundBox.material.dispose();
      renderer.toneMapping = toneMapping;
      renderer.autoClear = originalAutoClear;
      scene.background = background;
    }
    _textureToCubeUV(texture, cubeUVRenderTarget) {
      const renderer = this._renderer;
      const isCubeTexture = texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping;
      if (isCubeTexture) {
        if (this._cubemapMaterial === null) {
          this._cubemapMaterial = _getCubemapMaterial();
        }
        this._cubemapMaterial.uniforms.flipEnvMap.value = texture.isRenderTargetTexture === false ? -1 : 1;
      } else {
        if (this._equirectMaterial === null) {
          this._equirectMaterial = _getEquirectMaterial();
        }
      }
      const material = isCubeTexture ? this._cubemapMaterial : this._equirectMaterial;
      const mesh = new Mesh(this._lodPlanes[0], material);
      const uniforms = material.uniforms;
      uniforms["envMap"].value = texture;
      const size = this._cubeSize;
      _setViewport(cubeUVRenderTarget, 0, 0, 3 * size, 2 * size);
      renderer.setRenderTarget(cubeUVRenderTarget);
      renderer.render(mesh, _flatCamera);
    }
    _applyPMREM(cubeUVRenderTarget) {
      const renderer = this._renderer;
      const autoClear = renderer.autoClear;
      renderer.autoClear = false;
      for (let i = 1; i < this._lodPlanes.length; i++) {
        const sigma = Math.sqrt(this._sigmas[i] * this._sigmas[i] - this._sigmas[i - 1] * this._sigmas[i - 1]);
        const poleAxis = _axisDirections[(i - 1) % _axisDirections.length];
        this._blur(cubeUVRenderTarget, i - 1, i, sigma, poleAxis);
      }
      renderer.autoClear = autoClear;
    }
    /**
     * This is a two-pass Gaussian blur for a cubemap. Normally this is done
     * vertically and horizontally, but this breaks down on a cube. Here we apply
     * the blur latitudinally (around the poles), and then longitudinally (towards
     * the poles) to approximate the orthogonally-separable blur. It is least
     * accurate at the poles, but still does a decent job.
     */
    _blur(cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis) {
      const pingPongRenderTarget = this._pingPongRenderTarget;
      this._halfBlur(
        cubeUVRenderTarget,
        pingPongRenderTarget,
        lodIn,
        lodOut,
        sigma,
        "latitudinal",
        poleAxis
      );
      this._halfBlur(
        pingPongRenderTarget,
        cubeUVRenderTarget,
        lodOut,
        lodOut,
        sigma,
        "longitudinal",
        poleAxis
      );
    }
    _halfBlur(targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis) {
      const renderer = this._renderer;
      const blurMaterial = this._blurMaterial;
      if (direction !== "latitudinal" && direction !== "longitudinal") {
        console.error(
          "blur direction must be either latitudinal or longitudinal!"
        );
      }
      const STANDARD_DEVIATIONS = 3;
      const blurMesh = new Mesh(this._lodPlanes[lodOut], blurMaterial);
      const blurUniforms = blurMaterial.uniforms;
      const pixels = this._sizeLods[lodIn] - 1;
      const radiansPerPixel = isFinite(sigmaRadians) ? Math.PI / (2 * pixels) : 2 * Math.PI / (2 * MAX_SAMPLES - 1);
      const sigmaPixels = sigmaRadians / radiansPerPixel;
      const samples = isFinite(sigmaRadians) ? 1 + Math.floor(STANDARD_DEVIATIONS * sigmaPixels) : MAX_SAMPLES;
      if (samples > MAX_SAMPLES) {
        console.warn(`sigmaRadians, ${sigmaRadians}, is too large and will clip, as it requested ${samples} samples when the maximum is set to ${MAX_SAMPLES}`);
      }
      const weights = [];
      let sum = 0;
      for (let i = 0; i < MAX_SAMPLES; ++i) {
        const x2 = i / sigmaPixels;
        const weight = Math.exp(-x2 * x2 / 2);
        weights.push(weight);
        if (i === 0) {
          sum += weight;
        } else if (i < samples) {
          sum += 2 * weight;
        }
      }
      for (let i = 0; i < weights.length; i++) {
        weights[i] = weights[i] / sum;
      }
      blurUniforms["envMap"].value = targetIn.texture;
      blurUniforms["samples"].value = samples;
      blurUniforms["weights"].value = weights;
      blurUniforms["latitudinal"].value = direction === "latitudinal";
      if (poleAxis) {
        blurUniforms["poleAxis"].value = poleAxis;
      }
      const { _lodMax } = this;
      blurUniforms["dTheta"].value = radiansPerPixel;
      blurUniforms["mipInt"].value = _lodMax - lodIn;
      const outputSize = this._sizeLods[lodOut];
      const x = 3 * outputSize * (lodOut > _lodMax - LOD_MIN ? lodOut - _lodMax + LOD_MIN : 0);
      const y = 4 * (this._cubeSize - outputSize);
      _setViewport(targetOut, x, y, 3 * outputSize, 2 * outputSize);
      renderer.setRenderTarget(targetOut);
      renderer.render(blurMesh, _flatCamera);
    }
  };
  function _createPlanes(lodMax) {
    const lodPlanes = [];
    const sizeLods = [];
    const sigmas = [];
    let lod = lodMax;
    const totalLods = lodMax - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;
    for (let i = 0; i < totalLods; i++) {
      const sizeLod = Math.pow(2, lod);
      sizeLods.push(sizeLod);
      let sigma = 1 / sizeLod;
      if (i > lodMax - LOD_MIN) {
        sigma = EXTRA_LOD_SIGMA[i - lodMax + LOD_MIN - 1];
      } else if (i === 0) {
        sigma = 0;
      }
      sigmas.push(sigma);
      const texelSize = 1 / (sizeLod - 2);
      const min = -texelSize;
      const max2 = 1 + texelSize;
      const uv1 = [min, min, max2, min, max2, max2, min, min, max2, max2, min, max2];
      const cubeFaces = 6;
      const vertices = 6;
      const positionSize = 3;
      const uvSize = 2;
      const faceIndexSize = 1;
      const position = new Float32Array(positionSize * vertices * cubeFaces);
      const uv = new Float32Array(uvSize * vertices * cubeFaces);
      const faceIndex = new Float32Array(faceIndexSize * vertices * cubeFaces);
      for (let face = 0; face < cubeFaces; face++) {
        const x = face % 3 * 2 / 3 - 1;
        const y = face > 2 ? 0 : -1;
        const coordinates = [
          x,
          y,
          0,
          x + 2 / 3,
          y,
          0,
          x + 2 / 3,
          y + 1,
          0,
          x,
          y,
          0,
          x + 2 / 3,
          y + 1,
          0,
          x,
          y + 1,
          0
        ];
        position.set(coordinates, positionSize * vertices * face);
        uv.set(uv1, uvSize * vertices * face);
        const fill = [face, face, face, face, face, face];
        faceIndex.set(fill, faceIndexSize * vertices * face);
      }
      const planes = new BufferGeometry();
      planes.setAttribute("position", new BufferAttribute(position, positionSize));
      planes.setAttribute("uv", new BufferAttribute(uv, uvSize));
      planes.setAttribute("faceIndex", new BufferAttribute(faceIndex, faceIndexSize));
      lodPlanes.push(planes);
      if (lod > LOD_MIN) {
        lod--;
      }
    }
    return { lodPlanes, sizeLods, sigmas };
  }
  function _createRenderTarget(width, height, params) {
    const cubeUVRenderTarget = new WebGLRenderTarget(width, height, params);
    cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
    cubeUVRenderTarget.texture.name = "PMREM.cubeUv";
    cubeUVRenderTarget.scissorTest = true;
    return cubeUVRenderTarget;
  }
  function _setViewport(target, x, y, width, height) {
    target.viewport.set(x, y, width, height);
    target.scissor.set(x, y, width, height);
  }
  function _getBlurShader(lodMax, width, height) {
    const weights = new Float32Array(MAX_SAMPLES);
    const poleAxis = new Vector3(0, 1, 0);
    const shaderMaterial = new ShaderMaterial({
      name: "SphericalGaussianBlur",
      defines: {
        "n": MAX_SAMPLES,
        "CUBEUV_TEXEL_WIDTH": 1 / width,
        "CUBEUV_TEXEL_HEIGHT": 1 / height,
        "CUBEUV_MAX_MIP": `${lodMax}.0`
      },
      uniforms: {
        "envMap": { value: null },
        "samples": { value: 1 },
        "weights": { value: weights },
        "latitudinal": { value: false },
        "dTheta": { value: 0 },
        "mipInt": { value: 0 },
        "poleAxis": { value: poleAxis }
      },
      vertexShader: _getCommonVertexShader(),
      fragmentShader: (
        /* glsl */
        `

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;
			uniform int samples;
			uniform float weights[ n ];
			uniform bool latitudinal;
			uniform float dTheta;
			uniform float mipInt;
			uniform vec3 poleAxis;

			#define ENVMAP_TYPE_CUBE_UV
			#include <cube_uv_reflection_fragment>

			vec3 getSample( float theta, vec3 axis ) {

				float cosTheta = cos( theta );
				// Rodrigues' axis-angle rotation
				vec3 sampleDirection = vOutputDirection * cosTheta
					+ cross( axis, vOutputDirection ) * sin( theta )
					+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );

				return bilinearCubeUV( envMap, sampleDirection, mipInt );

			}

			void main() {

				vec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );

				if ( all( equal( axis, vec3( 0.0 ) ) ) ) {

					axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );

				}

				axis = normalize( axis );

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );

				for ( int i = 1; i < n; i++ ) {

					if ( i >= samples ) {

						break;

					}

					float theta = dTheta * float( i );
					gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );
					gl_FragColor.rgb += weights[ i ] * getSample( theta, axis );

				}

			}
		`
      ),
      blending: NoBlending,
      depthTest: false,
      depthWrite: false
    });
    return shaderMaterial;
  }
  function _getEquirectMaterial() {
    return new ShaderMaterial({
      name: "EquirectangularToCubeUV",
      uniforms: {
        "envMap": { value: null }
      },
      vertexShader: _getCommonVertexShader(),
      fragmentShader: (
        /* glsl */
        `

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;

			#include <common>

			void main() {

				vec3 outputDirection = normalize( vOutputDirection );
				vec2 uv = equirectUv( outputDirection );

				gl_FragColor = vec4( texture2D ( envMap, uv ).rgb, 1.0 );

			}
		`
      ),
      blending: NoBlending,
      depthTest: false,
      depthWrite: false
    });
  }
  function _getCubemapMaterial() {
    return new ShaderMaterial({
      name: "CubemapToCubeUV",
      uniforms: {
        "envMap": { value: null },
        "flipEnvMap": { value: -1 }
      },
      vertexShader: _getCommonVertexShader(),
      fragmentShader: (
        /* glsl */
        `

			precision mediump float;
			precision mediump int;

			uniform float flipEnvMap;

			varying vec3 vOutputDirection;

			uniform samplerCube envMap;

			void main() {

				gl_FragColor = textureCube( envMap, vec3( flipEnvMap * vOutputDirection.x, vOutputDirection.yz ) );

			}
		`
      ),
      blending: NoBlending,
      depthTest: false,
      depthWrite: false
    });
  }
  function _getCommonVertexShader() {
    return (
      /* glsl */
      `

		precision mediump float;
		precision mediump int;

		attribute float faceIndex;

		varying vec3 vOutputDirection;

		// RH coordinate system; PMREM face-indexing convention
		vec3 getDirection( vec2 uv, float face ) {

			uv = 2.0 * uv - 1.0;

			vec3 direction = vec3( uv, 1.0 );

			if ( face == 0.0 ) {

				direction = direction.zyx; // ( 1, v, u ) pos x

			} else if ( face == 1.0 ) {

				direction = direction.xzy;
				direction.xz *= -1.0; // ( -u, 1, -v ) pos y

			} else if ( face == 2.0 ) {

				direction.x *= -1.0; // ( -u, v, 1 ) pos z

			} else if ( face == 3.0 ) {

				direction = direction.zyx;
				direction.xz *= -1.0; // ( -1, v, -u ) neg x

			} else if ( face == 4.0 ) {

				direction = direction.xzy;
				direction.xy *= -1.0; // ( -u, -1, v ) neg y

			} else if ( face == 5.0 ) {

				direction.z *= -1.0; // ( u, v, -1 ) neg z

			}

			return direction;

		}

		void main() {

			vOutputDirection = getDirection( uv, faceIndex );
			gl_Position = vec4( position, 1.0 );

		}
	`
    );
  }
  function WebGLCubeUVMaps(renderer) {
    let cubeUVmaps = /* @__PURE__ */ new WeakMap();
    let pmremGenerator = null;
    function get(texture) {
      if (texture && texture.isTexture) {
        const mapping = texture.mapping;
        const isEquirectMap = mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping;
        const isCubeMap = mapping === CubeReflectionMapping || mapping === CubeRefractionMapping;
        if (isEquirectMap || isCubeMap) {
          if (texture.isRenderTargetTexture && texture.needsPMREMUpdate === true) {
            texture.needsPMREMUpdate = false;
            let renderTarget = cubeUVmaps.get(texture);
            if (pmremGenerator === null) pmremGenerator = new PMREMGenerator(renderer);
            renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular(texture, renderTarget) : pmremGenerator.fromCubemap(texture, renderTarget);
            cubeUVmaps.set(texture, renderTarget);
            return renderTarget.texture;
          } else {
            if (cubeUVmaps.has(texture)) {
              return cubeUVmaps.get(texture).texture;
            } else {
              const image = texture.image;
              if (isEquirectMap && image && image.height > 0 || isCubeMap && image && isCubeTextureComplete(image)) {
                if (pmremGenerator === null) pmremGenerator = new PMREMGenerator(renderer);
                const renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular(texture) : pmremGenerator.fromCubemap(texture);
                cubeUVmaps.set(texture, renderTarget);
                texture.addEventListener("dispose", onTextureDispose);
                return renderTarget.texture;
              } else {
                return null;
              }
            }
          }
        }
      }
      return texture;
    }
    function isCubeTextureComplete(image) {
      let count = 0;
      const length = 6;
      for (let i = 0; i < length; i++) {
        if (image[i] !== void 0) count++;
      }
      return count === length;
    }
    function onTextureDispose(event) {
      const texture = event.target;
      texture.removeEventListener("dispose", onTextureDispose);
      const cubemapUV = cubeUVmaps.get(texture);
      if (cubemapUV !== void 0) {
        cubeUVmaps.delete(texture);
        cubemapUV.dispose();
      }
    }
    function dispose() {
      cubeUVmaps = /* @__PURE__ */ new WeakMap();
      if (pmremGenerator !== null) {
        pmremGenerator.dispose();
        pmremGenerator = null;
      }
    }
    return {
      get,
      dispose
    };
  }
  function WebGLExtensions(gl) {
    const extensions = {};
    function getExtension(name) {
      if (extensions[name] !== void 0) {
        return extensions[name];
      }
      let extension;
      switch (name) {
        case "WEBGL_depth_texture":
          extension = gl.getExtension("WEBGL_depth_texture") || gl.getExtension("MOZ_WEBGL_depth_texture") || gl.getExtension("WEBKIT_WEBGL_depth_texture");
          break;
        case "EXT_texture_filter_anisotropic":
          extension = gl.getExtension("EXT_texture_filter_anisotropic") || gl.getExtension("MOZ_EXT_texture_filter_anisotropic") || gl.getExtension("WEBKIT_EXT_texture_filter_anisotropic");
          break;
        case "WEBGL_compressed_texture_s3tc":
          extension = gl.getExtension("WEBGL_compressed_texture_s3tc") || gl.getExtension("MOZ_WEBGL_compressed_texture_s3tc") || gl.getExtension("WEBKIT_WEBGL_compressed_texture_s3tc");
          break;
        case "WEBGL_compressed_texture_pvrtc":
          extension = gl.getExtension("WEBGL_compressed_texture_pvrtc") || gl.getExtension("WEBKIT_WEBGL_compressed_texture_pvrtc");
          break;
        default:
          extension = gl.getExtension(name);
      }
      extensions[name] = extension;
      return extension;
    }
    return {
      has: function(name) {
        return getExtension(name) !== null;
      },
      init: function(capabilities) {
        if (capabilities.isWebGL2) {
          getExtension("EXT_color_buffer_float");
          getExtension("WEBGL_clip_cull_distance");
        } else {
          getExtension("WEBGL_depth_texture");
          getExtension("OES_texture_float");
          getExtension("OES_texture_half_float");
          getExtension("OES_texture_half_float_linear");
          getExtension("OES_standard_derivatives");
          getExtension("OES_element_index_uint");
          getExtension("OES_vertex_array_object");
          getExtension("ANGLE_instanced_arrays");
        }
        getExtension("OES_texture_float_linear");
        getExtension("EXT_color_buffer_half_float");
        getExtension("WEBGL_multisampled_render_to_texture");
      },
      get: function(name) {
        const extension = getExtension(name);
        if (extension === null) {
          console.warn("THREE.WebGLRenderer: " + name + " extension not supported.");
        }
        return extension;
      }
    };
  }
  function WebGLGeometries(gl, attributes, info, bindingStates) {
    const geometries = {};
    const wireframeAttributes = /* @__PURE__ */ new WeakMap();
    function onGeometryDispose(event) {
      const geometry = event.target;
      if (geometry.index !== null) {
        attributes.remove(geometry.index);
      }
      for (const name in geometry.attributes) {
        attributes.remove(geometry.attributes[name]);
      }
      for (const name in geometry.morphAttributes) {
        const array = geometry.morphAttributes[name];
        for (let i = 0, l = array.length; i < l; i++) {
          attributes.remove(array[i]);
        }
      }
      geometry.removeEventListener("dispose", onGeometryDispose);
      delete geometries[geometry.id];
      const attribute = wireframeAttributes.get(geometry);
      if (attribute) {
        attributes.remove(attribute);
        wireframeAttributes.delete(geometry);
      }
      bindingStates.releaseStatesOfGeometry(geometry);
      if (geometry.isInstancedBufferGeometry === true) {
        delete geometry._maxInstanceCount;
      }
      info.memory.geometries--;
    }
    function get(object, geometry) {
      if (geometries[geometry.id] === true) return geometry;
      geometry.addEventListener("dispose", onGeometryDispose);
      geometries[geometry.id] = true;
      info.memory.geometries++;
      return geometry;
    }
    function update(geometry) {
      const geometryAttributes = geometry.attributes;
      for (const name in geometryAttributes) {
        attributes.update(geometryAttributes[name], gl.ARRAY_BUFFER);
      }
      const morphAttributes = geometry.morphAttributes;
      for (const name in morphAttributes) {
        const array = morphAttributes[name];
        for (let i = 0, l = array.length; i < l; i++) {
          attributes.update(array[i], gl.ARRAY_BUFFER);
        }
      }
    }
    function updateWireframeAttribute(geometry) {
      const indices = [];
      const geometryIndex = geometry.index;
      const geometryPosition = geometry.attributes.position;
      let version = 0;
      if (geometryIndex !== null) {
        const array = geometryIndex.array;
        version = geometryIndex.version;
        for (let i = 0, l = array.length; i < l; i += 3) {
          const a = array[i + 0];
          const b = array[i + 1];
          const c = array[i + 2];
          indices.push(a, b, b, c, c, a);
        }
      } else if (geometryPosition !== void 0) {
        const array = geometryPosition.array;
        version = geometryPosition.version;
        for (let i = 0, l = array.length / 3 - 1; i < l; i += 3) {
          const a = i + 0;
          const b = i + 1;
          const c = i + 2;
          indices.push(a, b, b, c, c, a);
        }
      } else {
        return;
      }
      const attribute = new (arrayNeedsUint32(indices) ? Uint32BufferAttribute : Uint16BufferAttribute)(indices, 1);
      attribute.version = version;
      const previousAttribute = wireframeAttributes.get(geometry);
      if (previousAttribute) attributes.remove(previousAttribute);
      wireframeAttributes.set(geometry, attribute);
    }
    function getWireframeAttribute(geometry) {
      const currentAttribute = wireframeAttributes.get(geometry);
      if (currentAttribute) {
        const geometryIndex = geometry.index;
        if (geometryIndex !== null) {
          if (currentAttribute.version < geometryIndex.version) {
            updateWireframeAttribute(geometry);
          }
        }
      } else {
        updateWireframeAttribute(geometry);
      }
      return wireframeAttributes.get(geometry);
    }
    return {
      get,
      update,
      getWireframeAttribute
    };
  }
  function WebGLIndexedBufferRenderer(gl, extensions, info, capabilities) {
    const isWebGL2 = capabilities.isWebGL2;
    let mode;
    function setMode(value) {
      mode = value;
    }
    let type, bytesPerElement;
    function setIndex(value) {
      type = value.type;
      bytesPerElement = value.bytesPerElement;
    }
    function render(start, count) {
      gl.drawElements(mode, count, type, start * bytesPerElement);
      info.update(count, mode, 1);
    }
    function renderInstances(start, count, primcount) {
      if (primcount === 0) return;
      let extension, methodName;
      if (isWebGL2) {
        extension = gl;
        methodName = "drawElementsInstanced";
      } else {
        extension = extensions.get("ANGLE_instanced_arrays");
        methodName = "drawElementsInstancedANGLE";
        if (extension === null) {
          console.error("THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.");
          return;
        }
      }
      extension[methodName](mode, count, type, start * bytesPerElement, primcount);
      info.update(count, mode, primcount);
    }
    function renderMultiDraw(starts, counts, drawCount) {
      if (drawCount === 0) return;
      const extension = extensions.get("WEBGL_multi_draw");
      if (extension === null) {
        for (let i = 0; i < drawCount; i++) {
          this.render(starts[i] / bytesPerElement, counts[i]);
        }
      } else {
        extension.multiDrawElementsWEBGL(mode, counts, 0, type, starts, 0, drawCount);
        let elementCount = 0;
        for (let i = 0; i < drawCount; i++) {
          elementCount += counts[i];
        }
        info.update(elementCount, mode, 1);
      }
    }
    this.setMode = setMode;
    this.setIndex = setIndex;
    this.render = render;
    this.renderInstances = renderInstances;
    this.renderMultiDraw = renderMultiDraw;
  }
  function WebGLInfo(gl) {
    const memory = {
      geometries: 0,
      textures: 0
    };
    const render = {
      frame: 0,
      calls: 0,
      triangles: 0,
      points: 0,
      lines: 0
    };
    function update(count, mode, instanceCount) {
      render.calls++;
      switch (mode) {
        case gl.TRIANGLES:
          render.triangles += instanceCount * (count / 3);
          break;
        case gl.LINES:
          render.lines += instanceCount * (count / 2);
          break;
        case gl.LINE_STRIP:
          render.lines += instanceCount * (count - 1);
          break;
        case gl.LINE_LOOP:
          render.lines += instanceCount * count;
          break;
        case gl.POINTS:
          render.points += instanceCount * count;
          break;
        default:
          console.error("THREE.WebGLInfo: Unknown draw mode:", mode);
          break;
      }
    }
    function reset() {
      render.calls = 0;
      render.triangles = 0;
      render.points = 0;
      render.lines = 0;
    }
    return {
      memory,
      render,
      programs: null,
      autoReset: true,
      reset,
      update
    };
  }
  function numericalSort(a, b) {
    return a[0] - b[0];
  }
  function absNumericalSort(a, b) {
    return Math.abs(b[1]) - Math.abs(a[1]);
  }
  function WebGLMorphtargets(gl, capabilities, textures) {
    const influencesList = {};
    const morphInfluences = new Float32Array(8);
    const morphTextures = /* @__PURE__ */ new WeakMap();
    const morph = new Vector4();
    const workInfluences = [];
    for (let i = 0; i < 8; i++) {
      workInfluences[i] = [i, 0];
    }
    function update(object, geometry, program) {
      const objectInfluences = object.morphTargetInfluences;
      if (capabilities.isWebGL2 === true) {
        const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
        const morphTargetsCount = morphAttribute !== void 0 ? morphAttribute.length : 0;
        let entry = morphTextures.get(geometry);
        if (entry === void 0 || entry.count !== morphTargetsCount) {
          let disposeTexture = function() {
            texture.dispose();
            morphTextures.delete(geometry);
            geometry.removeEventListener("dispose", disposeTexture);
          };
          if (entry !== void 0) entry.texture.dispose();
          const hasMorphPosition = geometry.morphAttributes.position !== void 0;
          const hasMorphNormals = geometry.morphAttributes.normal !== void 0;
          const hasMorphColors = geometry.morphAttributes.color !== void 0;
          const morphTargets = geometry.morphAttributes.position || [];
          const morphNormals = geometry.morphAttributes.normal || [];
          const morphColors = geometry.morphAttributes.color || [];
          let vertexDataCount = 0;
          if (hasMorphPosition === true) vertexDataCount = 1;
          if (hasMorphNormals === true) vertexDataCount = 2;
          if (hasMorphColors === true) vertexDataCount = 3;
          let width = geometry.attributes.position.count * vertexDataCount;
          let height = 1;
          if (width > capabilities.maxTextureSize) {
            height = Math.ceil(width / capabilities.maxTextureSize);
            width = capabilities.maxTextureSize;
          }
          const buffer = new Float32Array(width * height * 4 * morphTargetsCount);
          const texture = new DataArrayTexture(buffer, width, height, morphTargetsCount);
          texture.type = FloatType;
          texture.needsUpdate = true;
          const vertexDataStride = vertexDataCount * 4;
          for (let i = 0; i < morphTargetsCount; i++) {
            const morphTarget = morphTargets[i];
            const morphNormal = morphNormals[i];
            const morphColor = morphColors[i];
            const offset = width * height * 4 * i;
            for (let j = 0; j < morphTarget.count; j++) {
              const stride = j * vertexDataStride;
              if (hasMorphPosition === true) {
                morph.fromBufferAttribute(morphTarget, j);
                buffer[offset + stride + 0] = morph.x;
                buffer[offset + stride + 1] = morph.y;
                buffer[offset + stride + 2] = morph.z;
                buffer[offset + stride + 3] = 0;
              }
              if (hasMorphNormals === true) {
                morph.fromBufferAttribute(morphNormal, j);
                buffer[offset + stride + 4] = morph.x;
                buffer[offset + stride + 5] = morph.y;
                buffer[offset + stride + 6] = morph.z;
                buffer[offset + stride + 7] = 0;
              }
              if (hasMorphColors === true) {
                morph.fromBufferAttribute(morphColor, j);
                buffer[offset + stride + 8] = morph.x;
                buffer[offset + stride + 9] = morph.y;
                buffer[offset + stride + 10] = morph.z;
                buffer[offset + stride + 11] = morphColor.itemSize === 4 ? morph.w : 1;
              }
            }
          }
          entry = {
            count: morphTargetsCount,
            texture,
            size: new Vector2(width, height)
          };
          morphTextures.set(geometry, entry);
          geometry.addEventListener("dispose", disposeTexture);
        }
        let morphInfluencesSum = 0;
        for (let i = 0; i < objectInfluences.length; i++) {
          morphInfluencesSum += objectInfluences[i];
        }
        const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
        program.getUniforms().setValue(gl, "morphTargetBaseInfluence", morphBaseInfluence);
        program.getUniforms().setValue(gl, "morphTargetInfluences", objectInfluences);
        program.getUniforms().setValue(gl, "morphTargetsTexture", entry.texture, textures);
        program.getUniforms().setValue(gl, "morphTargetsTextureSize", entry.size);
      } else {
        const length = objectInfluences === void 0 ? 0 : objectInfluences.length;
        let influences = influencesList[geometry.id];
        if (influences === void 0 || influences.length !== length) {
          influences = [];
          for (let i = 0; i < length; i++) {
            influences[i] = [i, 0];
          }
          influencesList[geometry.id] = influences;
        }
        for (let i = 0; i < length; i++) {
          const influence = influences[i];
          influence[0] = i;
          influence[1] = objectInfluences[i];
        }
        influences.sort(absNumericalSort);
        for (let i = 0; i < 8; i++) {
          if (i < length && influences[i][1]) {
            workInfluences[i][0] = influences[i][0];
            workInfluences[i][1] = influences[i][1];
          } else {
            workInfluences[i][0] = Number.MAX_SAFE_INTEGER;
            workInfluences[i][1] = 0;
          }
        }
        workInfluences.sort(numericalSort);
        const morphTargets = geometry.morphAttributes.position;
        const morphNormals = geometry.morphAttributes.normal;
        let morphInfluencesSum = 0;
        for (let i = 0; i < 8; i++) {
          const influence = workInfluences[i];
          const index = influence[0];
          const value = influence[1];
          if (index !== Number.MAX_SAFE_INTEGER && value) {
            if (morphTargets && geometry.getAttribute("morphTarget" + i) !== morphTargets[index]) {
              geometry.setAttribute("morphTarget" + i, morphTargets[index]);
            }
            if (morphNormals && geometry.getAttribute("morphNormal" + i) !== morphNormals[index]) {
              geometry.setAttribute("morphNormal" + i, morphNormals[index]);
            }
            morphInfluences[i] = value;
            morphInfluencesSum += value;
          } else {
            if (morphTargets && geometry.hasAttribute("morphTarget" + i) === true) {
              geometry.deleteAttribute("morphTarget" + i);
            }
            if (morphNormals && geometry.hasAttribute("morphNormal" + i) === true) {
              geometry.deleteAttribute("morphNormal" + i);
            }
            morphInfluences[i] = 0;
          }
        }
        const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
        program.getUniforms().setValue(gl, "morphTargetBaseInfluence", morphBaseInfluence);
        program.getUniforms().setValue(gl, "morphTargetInfluences", morphInfluences);
      }
    }
    return {
      update
    };
  }
  function WebGLObjects(gl, geometries, attributes, info) {
    let updateMap = /* @__PURE__ */ new WeakMap();
    function update(object) {
      const frame = info.render.frame;
      const geometry = object.geometry;
      const buffergeometry = geometries.get(object, geometry);
      if (updateMap.get(buffergeometry) !== frame) {
        geometries.update(buffergeometry);
        updateMap.set(buffergeometry, frame);
      }
      if (object.isInstancedMesh) {
        if (object.hasEventListener("dispose", onInstancedMeshDispose) === false) {
          object.addEventListener("dispose", onInstancedMeshDispose);
        }
        if (updateMap.get(object) !== frame) {
          attributes.update(object.instanceMatrix, gl.ARRAY_BUFFER);
          if (object.instanceColor !== null) {
            attributes.update(object.instanceColor, gl.ARRAY_BUFFER);
          }
          updateMap.set(object, frame);
        }
      }
      if (object.isSkinnedMesh) {
        const skeleton = object.skeleton;
        if (updateMap.get(skeleton) !== frame) {
          skeleton.update();
          updateMap.set(skeleton, frame);
        }
      }
      return buffergeometry;
    }
    function dispose() {
      updateMap = /* @__PURE__ */ new WeakMap();
    }
    function onInstancedMeshDispose(event) {
      const instancedMesh = event.target;
      instancedMesh.removeEventListener("dispose", onInstancedMeshDispose);
      attributes.remove(instancedMesh.instanceMatrix);
      if (instancedMesh.instanceColor !== null) attributes.remove(instancedMesh.instanceColor);
    }
    return {
      update,
      dispose
    };
  }
  var DepthTexture = class extends Texture {
    constructor(width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format) {
      format = format !== void 0 ? format : DepthFormat;
      if (format !== DepthFormat && format !== DepthStencilFormat) {
        throw new Error("DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat");
      }
      if (type === void 0 && format === DepthFormat) type = UnsignedIntType;
      if (type === void 0 && format === DepthStencilFormat) type = UnsignedInt248Type;
      super(null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);
      this.isDepthTexture = true;
      this.image = { width, height };
      this.magFilter = magFilter !== void 0 ? magFilter : NearestFilter;
      this.minFilter = minFilter !== void 0 ? minFilter : NearestFilter;
      this.flipY = false;
      this.generateMipmaps = false;
      this.compareFunction = null;
    }
    copy(source) {
      super.copy(source);
      this.compareFunction = source.compareFunction;
      return this;
    }
    toJSON(meta) {
      const data = super.toJSON(meta);
      if (this.compareFunction !== null) data.compareFunction = this.compareFunction;
      return data;
    }
  };
  var emptyTexture = /* @__PURE__ */ new Texture();
  var emptyShadowTexture = /* @__PURE__ */ new DepthTexture(1, 1);
  emptyShadowTexture.compareFunction = LessEqualCompare;
  var emptyArrayTexture = /* @__PURE__ */ new DataArrayTexture();
  var empty3dTexture = /* @__PURE__ */ new Data3DTexture();
  var emptyCubeTexture = /* @__PURE__ */ new CubeTexture();
  var arrayCacheF32 = [];
  var arrayCacheI32 = [];
  var mat4array = new Float32Array(16);
  var mat3array = new Float32Array(9);
  var mat2array = new Float32Array(4);
  function flatten(array, nBlocks, blockSize) {
    const firstElem = array[0];
    if (firstElem <= 0 || firstElem > 0) return array;
    const n = nBlocks * blockSize;
    let r = arrayCacheF32[n];
    if (r === void 0) {
      r = new Float32Array(n);
      arrayCacheF32[n] = r;
    }
    if (nBlocks !== 0) {
      firstElem.toArray(r, 0);
      for (let i = 1, offset = 0; i !== nBlocks; ++i) {
        offset += blockSize;
        array[i].toArray(r, offset);
      }
    }
    return r;
  }
  function arraysEqual(a, b) {
    if (a.length !== b.length) return false;
    for (let i = 0, l = a.length; i < l; i++) {
      if (a[i] !== b[i]) return false;
    }
    return true;
  }
  function copyArray(a, b) {
    for (let i = 0, l = b.length; i < l; i++) {
      a[i] = b[i];
    }
  }
  function allocTexUnits(textures, n) {
    let r = arrayCacheI32[n];
    if (r === void 0) {
      r = new Int32Array(n);
      arrayCacheI32[n] = r;
    }
    for (let i = 0; i !== n; ++i) {
      r[i] = textures.allocateTextureUnit();
    }
    return r;
  }
  function setValueV1f(gl, v) {
    const cache = this.cache;
    if (cache[0] === v) return;
    gl.uniform1f(this.addr, v);
    cache[0] = v;
  }
  function setValueV2f(gl, v) {
    const cache = this.cache;
    if (v.x !== void 0) {
      if (cache[0] !== v.x || cache[1] !== v.y) {
        gl.uniform2f(this.addr, v.x, v.y);
        cache[0] = v.x;
        cache[1] = v.y;
      }
    } else {
      if (arraysEqual(cache, v)) return;
      gl.uniform2fv(this.addr, v);
      copyArray(cache, v);
    }
  }
  function setValueV3f(gl, v) {
    const cache = this.cache;
    if (v.x !== void 0) {
      if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z) {
        gl.uniform3f(this.addr, v.x, v.y, v.z);
        cache[0] = v.x;
        cache[1] = v.y;
        cache[2] = v.z;
      }
    } else if (v.r !== void 0) {
      if (cache[0] !== v.r || cache[1] !== v.g || cache[2] !== v.b) {
        gl.uniform3f(this.addr, v.r, v.g, v.b);
        cache[0] = v.r;
        cache[1] = v.g;
        cache[2] = v.b;
      }
    } else {
      if (arraysEqual(cache, v)) return;
      gl.uniform3fv(this.addr, v);
      copyArray(cache, v);
    }
  }
  function setValueV4f(gl, v) {
    const cache = this.cache;
    if (v.x !== void 0) {
      if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z || cache[3] !== v.w) {
        gl.uniform4f(this.addr, v.x, v.y, v.z, v.w);
        cache[0] = v.x;
        cache[1] = v.y;
        cache[2] = v.z;
        cache[3] = v.w;
      }
    } else {
      if (arraysEqual(cache, v)) return;
      gl.uniform4fv(this.addr, v);
      copyArray(cache, v);
    }
  }
  function setValueM2(gl, v) {
    const cache = this.cache;
    const elements = v.elements;
    if (elements === void 0) {
      if (arraysEqual(cache, v)) return;
      gl.uniformMatrix2fv(this.addr, false, v);
      copyArray(cache, v);
    } else {
      if (arraysEqual(cache, elements)) return;
      mat2array.set(elements);
      gl.uniformMatrix2fv(this.addr, false, mat2array);
      copyArray(cache, elements);
    }
  }
  function setValueM3(gl, v) {
    const cache = this.cache;
    const elements = v.elements;
    if (elements === void 0) {
      if (arraysEqual(cache, v)) return;
      gl.uniformMatrix3fv(this.addr, false, v);
      copyArray(cache, v);
    } else {
      if (arraysEqual(cache, elements)) return;
      mat3array.set(elements);
      gl.uniformMatrix3fv(this.addr, false, mat3array);
      copyArray(cache, elements);
    }
  }
  function setValueM4(gl, v) {
    const cache = this.cache;
    const elements = v.elements;
    if (elements === void 0) {
      if (arraysEqual(cache, v)) return;
      gl.uniformMatrix4fv(this.addr, false, v);
      copyArray(cache, v);
    } else {
      if (arraysEqual(cache, elements)) return;
      mat4array.set(elements);
      gl.uniformMatrix4fv(this.addr, false, mat4array);
      copyArray(cache, elements);
    }
  }
  function setValueV1i(gl, v) {
    const cache = this.cache;
    if (cache[0] === v) return;
    gl.uniform1i(this.addr, v);
    cache[0] = v;
  }
  function setValueV2i(gl, v) {
    const cache = this.cache;
    if (v.x !== void 0) {
      if (cache[0] !== v.x || cache[1] !== v.y) {
        gl.uniform2i(this.addr, v.x, v.y);
        cache[0] = v.x;
        cache[1] = v.y;
      }
    } else {
      if (arraysEqual(cache, v)) return;
      gl.uniform2iv(this.addr, v);
      copyArray(cache, v);
    }
  }
  function setValueV3i(gl, v) {
    const cache = this.cache;
    if (v.x !== void 0) {
      if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z) {
        gl.uniform3i(this.addr, v.x, v.y, v.z);
        cache[0] = v.x;
        cache[1] = v.y;
        cache[2] = v.z;
      }
    } else {
      if (arraysEqual(cache, v)) return;
      gl.uniform3iv(this.addr, v);
      copyArray(cache, v);
    }
  }
  function setValueV4i(gl, v) {
    const cache = this.cache;
    if (v.x !== void 0) {
      if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z || cache[3] !== v.w) {
        gl.uniform4i(this.addr, v.x, v.y, v.z, v.w);
        cache[0] = v.x;
        cache[1] = v.y;
        cache[2] = v.z;
        cache[3] = v.w;
      }
    } else {
      if (arraysEqual(cache, v)) return;
      gl.uniform4iv(this.addr, v);
      copyArray(cache, v);
    }
  }
  function setValueV1ui(gl, v) {
    const cache = this.cache;
    if (cache[0] === v) return;
    gl.uniform1ui(this.addr, v);
    cache[0] = v;
  }
  function setValueV2ui(gl, v) {
    const cache = this.cache;
    if (v.x !== void 0) {
      if (cache[0] !== v.x || cache[1] !== v.y) {
        gl.uniform2ui(this.addr, v.x, v.y);
        cache[0] = v.x;
        cache[1] = v.y;
      }
    } else {
      if (arraysEqual(cache, v)) return;
      gl.uniform2uiv(this.addr, v);
      copyArray(cache, v);
    }
  }
  function setValueV3ui(gl, v) {
    const cache = this.cache;
    if (v.x !== void 0) {
      if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z) {
        gl.uniform3ui(this.addr, v.x, v.y, v.z);
        cache[0] = v.x;
        cache[1] = v.y;
        cache[2] = v.z;
      }
    } else {
      if (arraysEqual(cache, v)) return;
      gl.uniform3uiv(this.addr, v);
      copyArray(cache, v);
    }
  }
  function setValueV4ui(gl, v) {
    const cache = this.cache;
    if (v.x !== void 0) {
      if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z || cache[3] !== v.w) {
        gl.uniform4ui(this.addr, v.x, v.y, v.z, v.w);
        cache[0] = v.x;
        cache[1] = v.y;
        cache[2] = v.z;
        cache[3] = v.w;
      }
    } else {
      if (arraysEqual(cache, v)) return;
      gl.uniform4uiv(this.addr, v);
      copyArray(cache, v);
    }
  }
  function setValueT1(gl, v, textures) {
    const cache = this.cache;
    const unit = textures.allocateTextureUnit();
    if (cache[0] !== unit) {
      gl.uniform1i(this.addr, unit);
      cache[0] = unit;
    }
    const emptyTexture2D = this.type === gl.SAMPLER_2D_SHADOW ? emptyShadowTexture : emptyTexture;
    textures.setTexture2D(v || emptyTexture2D, unit);
  }
  function setValueT3D1(gl, v, textures) {
    const cache = this.cache;
    const unit = textures.allocateTextureUnit();
    if (cache[0] !== unit) {
      gl.uniform1i(this.addr, unit);
      cache[0] = unit;
    }
    textures.setTexture3D(v || empty3dTexture, unit);
  }
  function setValueT6(gl, v, textures) {
    const cache = this.cache;
    const unit = textures.allocateTextureUnit();
    if (cache[0] !== unit) {
      gl.uniform1i(this.addr, unit);
      cache[0] = unit;
    }
    textures.setTextureCube(v || emptyCubeTexture, unit);
  }
  function setValueT2DArray1(gl, v, textures) {
    const cache = this.cache;
    const unit = textures.allocateTextureUnit();
    if (cache[0] !== unit) {
      gl.uniform1i(this.addr, unit);
      cache[0] = unit;
    }
    textures.setTexture2DArray(v || emptyArrayTexture, unit);
  }
  function getSingularSetter(type) {
    switch (type) {
      case 5126:
        return setValueV1f;
      // FLOAT
      case 35664:
        return setValueV2f;
      // _VEC2
      case 35665:
        return setValueV3f;
      // _VEC3
      case 35666:
        return setValueV4f;
      // _VEC4
      case 35674:
        return setValueM2;
      // _MAT2
      case 35675:
        return setValueM3;
      // _MAT3
      case 35676:
        return setValueM4;
      // _MAT4
      case 5124:
      case 35670:
        return setValueV1i;
      // INT, BOOL
      case 35667:
      case 35671:
        return setValueV2i;
      // _VEC2
      case 35668:
      case 35672:
        return setValueV3i;
      // _VEC3
      case 35669:
      case 35673:
        return setValueV4i;
      // _VEC4
      case 5125:
        return setValueV1ui;
      // UINT
      case 36294:
        return setValueV2ui;
      // _VEC2
      case 36295:
        return setValueV3ui;
      // _VEC3
      case 36296:
        return setValueV4ui;
      // _VEC4
      case 35678:
      // SAMPLER_2D
      case 36198:
      // SAMPLER_EXTERNAL_OES
      case 36298:
      // INT_SAMPLER_2D
      case 36306:
      // UNSIGNED_INT_SAMPLER_2D
      case 35682:
        return setValueT1;
      case 35679:
      // SAMPLER_3D
      case 36299:
      // INT_SAMPLER_3D
      case 36307:
        return setValueT3D1;
      case 35680:
      // SAMPLER_CUBE
      case 36300:
      // INT_SAMPLER_CUBE
      case 36308:
      // UNSIGNED_INT_SAMPLER_CUBE
      case 36293:
        return setValueT6;
      case 36289:
      // SAMPLER_2D_ARRAY
      case 36303:
      // INT_SAMPLER_2D_ARRAY
      case 36311:
      // UNSIGNED_INT_SAMPLER_2D_ARRAY
      case 36292:
        return setValueT2DArray1;
    }
  }
  function setValueV1fArray(gl, v) {
    gl.uniform1fv(this.addr, v);
  }
  function setValueV2fArray(gl, v) {
    const data = flatten(v, this.size, 2);
    gl.uniform2fv(this.addr, data);
  }
  function setValueV3fArray(gl, v) {
    const data = flatten(v, this.size, 3);
    gl.uniform3fv(this.addr, data);
  }
  function setValueV4fArray(gl, v) {
    const data = flatten(v, this.size, 4);
    gl.uniform4fv(this.addr, data);
  }
  function setValueM2Array(gl, v) {
    const data = flatten(v, this.size, 4);
    gl.uniformMatrix2fv(this.addr, false, data);
  }
  function setValueM3Array(gl, v) {
    const data = flatten(v, this.size, 9);
    gl.uniformMatrix3fv(this.addr, false, data);
  }
  function setValueM4Array(gl, v) {
    const data = flatten(v, this.size, 16);
    gl.uniformMatrix4fv(this.addr, false, data);
  }
  function setValueV1iArray(gl, v) {
    gl.uniform1iv(this.addr, v);
  }
  function setValueV2iArray(gl, v) {
    gl.uniform2iv(this.addr, v);
  }
  function setValueV3iArray(gl, v) {
    gl.uniform3iv(this.addr, v);
  }
  function setValueV4iArray(gl, v) {
    gl.uniform4iv(this.addr, v);
  }
  function setValueV1uiArray(gl, v) {
    gl.uniform1uiv(this.addr, v);
  }
  function setValueV2uiArray(gl, v) {
    gl.uniform2uiv(this.addr, v);
  }
  function setValueV3uiArray(gl, v) {
    gl.uniform3uiv(this.addr, v);
  }
  function setValueV4uiArray(gl, v) {
    gl.uniform4uiv(this.addr, v);
  }
  function setValueT1Array(gl, v, textures) {
    const cache = this.cache;
    const n = v.length;
    const units = allocTexUnits(textures, n);
    if (!arraysEqual(cache, units)) {
      gl.uniform1iv(this.addr, units);
      copyArray(cache, units);
    }
    for (let i = 0; i !== n; ++i) {
      textures.setTexture2D(v[i] || emptyTexture, units[i]);
    }
  }
  function setValueT3DArray(gl, v, textures) {
    const cache = this.cache;
    const n = v.length;
    const units = allocTexUnits(textures, n);
    if (!arraysEqual(cache, units)) {
      gl.uniform1iv(this.addr, units);
      copyArray(cache, units);
    }
    for (let i = 0; i !== n; ++i) {
      textures.setTexture3D(v[i] || empty3dTexture, units[i]);
    }
  }
  function setValueT6Array(gl, v, textures) {
    const cache = this.cache;
    const n = v.length;
    const units = allocTexUnits(textures, n);
    if (!arraysEqual(cache, units)) {
      gl.uniform1iv(this.addr, units);
      copyArray(cache, units);
    }
    for (let i = 0; i !== n; ++i) {
      textures.setTextureCube(v[i] || emptyCubeTexture, units[i]);
    }
  }
  function setValueT2DArrayArray(gl, v, textures) {
    const cache = this.cache;
    const n = v.length;
    const units = allocTexUnits(textures, n);
    if (!arraysEqual(cache, units)) {
      gl.uniform1iv(this.addr, units);
      copyArray(cache, units);
    }
    for (let i = 0; i !== n; ++i) {
      textures.setTexture2DArray(v[i] || emptyArrayTexture, units[i]);
    }
  }
  function getPureArraySetter(type) {
    switch (type) {
      case 5126:
        return setValueV1fArray;
      // FLOAT
      case 35664:
        return setValueV2fArray;
      // _VEC2
      case 35665:
        return setValueV3fArray;
      // _VEC3
      case 35666:
        return setValueV4fArray;
      // _VEC4
      case 35674:
        return setValueM2Array;
      // _MAT2
      case 35675:
        return setValueM3Array;
      // _MAT3
      case 35676:
        return setValueM4Array;
      // _MAT4
      case 5124:
      case 35670:
        return setValueV1iArray;
      // INT, BOOL
      case 35667:
      case 35671:
        return setValueV2iArray;
      // _VEC2
      case 35668:
      case 35672:
        return setValueV3iArray;
      // _VEC3
      case 35669:
      case 35673:
        return setValueV4iArray;
      // _VEC4
      case 5125:
        return setValueV1uiArray;
      // UINT
      case 36294:
        return setValueV2uiArray;
      // _VEC2
      case 36295:
        return setValueV3uiArray;
      // _VEC3
      case 36296:
        return setValueV4uiArray;
      // _VEC4
      case 35678:
      // SAMPLER_2D
      case 36198:
      // SAMPLER_EXTERNAL_OES
      case 36298:
      // INT_SAMPLER_2D
      case 36306:
      // UNSIGNED_INT_SAMPLER_2D
      case 35682:
        return setValueT1Array;
      case 35679:
      // SAMPLER_3D
      case 36299:
      // INT_SAMPLER_3D
      case 36307:
        return setValueT3DArray;
      case 35680:
      // SAMPLER_CUBE
      case 36300:
      // INT_SAMPLER_CUBE
      case 36308:
      // UNSIGNED_INT_SAMPLER_CUBE
      case 36293:
        return setValueT6Array;
      case 36289:
      // SAMPLER_2D_ARRAY
      case 36303:
      // INT_SAMPLER_2D_ARRAY
      case 36311:
      // UNSIGNED_INT_SAMPLER_2D_ARRAY
      case 36292:
        return setValueT2DArrayArray;
    }
  }
  var SingleUniform = class {
    constructor(id, activeInfo, addr) {
      this.id = id;
      this.addr = addr;
      this.cache = [];
      this.type = activeInfo.type;
      this.setValue = getSingularSetter(activeInfo.type);
    }
  };
  var PureArrayUniform = class {
    constructor(id, activeInfo, addr) {
      this.id = id;
      this.addr = addr;
      this.cache = [];
      this.type = activeInfo.type;
      this.size = activeInfo.size;
      this.setValue = getPureArraySetter(activeInfo.type);
    }
  };
  var StructuredUniform = class {
    constructor(id) {
      this.id = id;
      this.seq = [];
      this.map = {};
    }
    setValue(gl, value, textures) {
      const seq = this.seq;
      for (let i = 0, n = seq.length; i !== n; ++i) {
        const u = seq[i];
        u.setValue(gl, value[u.id], textures);
      }
    }
  };
  var RePathPart = /(\w+)(\])?(\[|\.)?/g;
  function addUniform(container, uniformObject) {
    container.seq.push(uniformObject);
    container.map[uniformObject.id] = uniformObject;
  }
  function parseUniform(activeInfo, addr, container) {
    const path = activeInfo.name, pathLength = path.length;
    RePathPart.lastIndex = 0;
    while (true) {
      const match = RePathPart.exec(path), matchEnd = RePathPart.lastIndex;
      let id = match[1];
      const idIsIndex = match[2] === "]", subscript = match[3];
      if (idIsIndex) id = id | 0;
      if (subscript === void 0 || subscript === "[" && matchEnd + 2 === pathLength) {
        addUniform(container, subscript === void 0 ? new SingleUniform(id, activeInfo, addr) : new PureArrayUniform(id, activeInfo, addr));
        break;
      } else {
        const map = container.map;
        let next = map[id];
        if (next === void 0) {
          next = new StructuredUniform(id);
          addUniform(container, next);
        }
        container = next;
      }
    }
  }
  var WebGLUniforms = class {
    constructor(gl, program) {
      this.seq = [];
      this.map = {};
      const n = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
      for (let i = 0; i < n; ++i) {
        const info = gl.getActiveUniform(program, i), addr = gl.getUniformLocation(program, info.name);
        parseUniform(info, addr, this);
      }
    }
    setValue(gl, name, value, textures) {
      const u = this.map[name];
      if (u !== void 0) u.setValue(gl, value, textures);
    }
    setOptional(gl, object, name) {
      const v = object[name];
      if (v !== void 0) this.setValue(gl, name, v);
    }
    static upload(gl, seq, values, textures) {
      for (let i = 0, n = seq.length; i !== n; ++i) {
        const u = seq[i], v = values[u.id];
        if (v.needsUpdate !== false) {
          u.setValue(gl, v.value, textures);
        }
      }
    }
    static seqWithValue(seq, values) {
      const r = [];
      for (let i = 0, n = seq.length; i !== n; ++i) {
        const u = seq[i];
        if (u.id in values) r.push(u);
      }
      return r;
    }
  };
  function WebGLShader(gl, type, string) {
    const shader = gl.createShader(type);
    gl.shaderSource(shader, string);
    gl.compileShader(shader);
    return shader;
  }
  var COMPLETION_STATUS_KHR = 37297;
  var programIdCount = 0;
  function handleSource(string, errorLine) {
    const lines = string.split("\n");
    const lines2 = [];
    const from = Math.max(errorLine - 6, 0);
    const to = Math.min(errorLine + 6, lines.length);
    for (let i = from; i < to; i++) {
      const line = i + 1;
      lines2.push(`${line === errorLine ? ">" : " "} ${line}: ${lines[i]}`);
    }
    return lines2.join("\n");
  }
  function getEncodingComponents(colorSpace) {
    const workingPrimaries = ColorManagement.getPrimaries(ColorManagement.workingColorSpace);
    const encodingPrimaries = ColorManagement.getPrimaries(colorSpace);
    let gamutMapping;
    if (workingPrimaries === encodingPrimaries) {
      gamutMapping = "";
    } else if (workingPrimaries === P3Primaries && encodingPrimaries === Rec709Primaries) {
      gamutMapping = "LinearDisplayP3ToLinearSRGB";
    } else if (workingPrimaries === Rec709Primaries && encodingPrimaries === P3Primaries) {
      gamutMapping = "LinearSRGBToLinearDisplayP3";
    }
    switch (colorSpace) {
      case LinearSRGBColorSpace:
      case LinearDisplayP3ColorSpace:
        return [gamutMapping, "LinearTransferOETF"];
      case SRGBColorSpace:
      case DisplayP3ColorSpace:
        return [gamutMapping, "sRGBTransferOETF"];
      default:
        console.warn("THREE.WebGLProgram: Unsupported color space:", colorSpace);
        return [gamutMapping, "LinearTransferOETF"];
    }
  }
  function getShaderErrors(gl, shader, type) {
    const status = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
    const errors = gl.getShaderInfoLog(shader).trim();
    if (status && errors === "") return "";
    const errorMatches = /ERROR: 0:(\d+)/.exec(errors);
    if (errorMatches) {
      const errorLine = parseInt(errorMatches[1]);
      return type.toUpperCase() + "\n\n" + errors + "\n\n" + handleSource(gl.getShaderSource(shader), errorLine);
    } else {
      return errors;
    }
  }
  function getTexelEncodingFunction(functionName, colorSpace) {
    const components = getEncodingComponents(colorSpace);
    return `vec4 ${functionName}( vec4 value ) { return ${components[0]}( ${components[1]}( value ) ); }`;
  }
  function getToneMappingFunction(functionName, toneMapping) {
    let toneMappingName;
    switch (toneMapping) {
      case LinearToneMapping:
        toneMappingName = "Linear";
        break;
      case ReinhardToneMapping:
        toneMappingName = "Reinhard";
        break;
      case CineonToneMapping:
        toneMappingName = "OptimizedCineon";
        break;
      case ACESFilmicToneMapping:
        toneMappingName = "ACESFilmic";
        break;
      case AgXToneMapping:
        toneMappingName = "AgX";
        break;
      case CustomToneMapping:
        toneMappingName = "Custom";
        break;
      default:
        console.warn("THREE.WebGLProgram: Unsupported toneMapping:", toneMapping);
        toneMappingName = "Linear";
    }
    return "vec3 " + functionName + "( vec3 color ) { return " + toneMappingName + "ToneMapping( color ); }";
  }
  function generateExtensions(parameters) {
    const chunks = [
      parameters.extensionDerivatives || !!parameters.envMapCubeUVHeight || parameters.bumpMap || parameters.normalMapTangentSpace || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === "physical" ? "#extension GL_OES_standard_derivatives : enable" : "",
      (parameters.extensionFragDepth || parameters.logarithmicDepthBuffer) && parameters.rendererExtensionFragDepth ? "#extension GL_EXT_frag_depth : enable" : "",
      parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ? "#extension GL_EXT_draw_buffers : require" : "",
      (parameters.extensionShaderTextureLOD || parameters.envMap || parameters.transmission) && parameters.rendererExtensionShaderTextureLod ? "#extension GL_EXT_shader_texture_lod : enable" : ""
    ];
    return chunks.filter(filterEmptyLine).join("\n");
  }
  function generateVertexExtensions(parameters) {
    const chunks = [
      parameters.extensionClipCullDistance ? "#extension GL_ANGLE_clip_cull_distance : require" : ""
    ];
    return chunks.filter(filterEmptyLine).join("\n");
  }
  function generateDefines(defines) {
    const chunks = [];
    for (const name in defines) {
      const value = defines[name];
      if (value === false) continue;
      chunks.push("#define " + name + " " + value);
    }
    return chunks.join("\n");
  }
  function fetchAttributeLocations(gl, program) {
    const attributes = {};
    const n = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
    for (let i = 0; i < n; i++) {
      const info = gl.getActiveAttrib(program, i);
      const name = info.name;
      let locationSize = 1;
      if (info.type === gl.FLOAT_MAT2) locationSize = 2;
      if (info.type === gl.FLOAT_MAT3) locationSize = 3;
      if (info.type === gl.FLOAT_MAT4) locationSize = 4;
      attributes[name] = {
        type: info.type,
        location: gl.getAttribLocation(program, name),
        locationSize
      };
    }
    return attributes;
  }
  function filterEmptyLine(string) {
    return string !== "";
  }
  function replaceLightNums(string, parameters) {
    const numSpotLightCoords = parameters.numSpotLightShadows + parameters.numSpotLightMaps - parameters.numSpotLightShadowsWithMaps;
    return string.replace(/NUM_DIR_LIGHTS/g, parameters.numDirLights).replace(/NUM_SPOT_LIGHTS/g, parameters.numSpotLights).replace(/NUM_SPOT_LIGHT_MAPS/g, parameters.numSpotLightMaps).replace(/NUM_SPOT_LIGHT_COORDS/g, numSpotLightCoords).replace(/NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights).replace(/NUM_POINT_LIGHTS/g, parameters.numPointLights).replace(/NUM_HEMI_LIGHTS/g, parameters.numHemiLights).replace(/NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows).replace(/NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS/g, parameters.numSpotLightShadowsWithMaps).replace(/NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows).replace(/NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows);
  }
  function replaceClippingPlaneNums(string, parameters) {
    return string.replace(/NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes).replace(/UNION_CLIPPING_PLANES/g, parameters.numClippingPlanes - parameters.numClipIntersection);
  }
  var includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;
  function resolveIncludes(string) {
    return string.replace(includePattern, includeReplacer);
  }
  var shaderChunkMap = /* @__PURE__ */ new Map([
    ["encodings_fragment", "colorspace_fragment"],
    // @deprecated, r154
    ["encodings_pars_fragment", "colorspace_pars_fragment"],
    // @deprecated, r154
    ["output_fragment", "opaque_fragment"]
    // @deprecated, r154
  ]);
  function includeReplacer(match, include) {
    let string = ShaderChunk[include];
    if (string === void 0) {
      const newInclude = shaderChunkMap.get(include);
      if (newInclude !== void 0) {
        string = ShaderChunk[newInclude];
        console.warn('THREE.WebGLRenderer: Shader chunk "%s" has been deprecated. Use "%s" instead.', include, newInclude);
      } else {
        throw new Error("Can not resolve #include <" + include + ">");
      }
    }
    return resolveIncludes(string);
  }
  var unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;
  function unrollLoops(string) {
    return string.replace(unrollLoopPattern, loopReplacer);
  }
  function loopReplacer(match, start, end, snippet) {
    let string = "";
    for (let i = parseInt(start); i < parseInt(end); i++) {
      string += snippet.replace(/\[\s*i\s*\]/g, "[ " + i + " ]").replace(/UNROLLED_LOOP_INDEX/g, i);
    }
    return string;
  }
  function generatePrecision(parameters) {
    let precisionstring = "precision " + parameters.precision + " float;\nprecision " + parameters.precision + " int;";
    if (parameters.precision === "highp") {
      precisionstring += "\n#define HIGH_PRECISION";
    } else if (parameters.precision === "mediump") {
      precisionstring += "\n#define MEDIUM_PRECISION";
    } else if (parameters.precision === "lowp") {
      precisionstring += "\n#define LOW_PRECISION";
    }
    return precisionstring;
  }
  function generateShadowMapTypeDefine(parameters) {
    let shadowMapTypeDefine = "SHADOWMAP_TYPE_BASIC";
    if (parameters.shadowMapType === PCFShadowMap) {
      shadowMapTypeDefine = "SHADOWMAP_TYPE_PCF";
    } else if (parameters.shadowMapType === PCFSoftShadowMap) {
      shadowMapTypeDefine = "SHADOWMAP_TYPE_PCF_SOFT";
    } else if (parameters.shadowMapType === VSMShadowMap) {
      shadowMapTypeDefine = "SHADOWMAP_TYPE_VSM";
    }
    return shadowMapTypeDefine;
  }
  function generateEnvMapTypeDefine(parameters) {
    let envMapTypeDefine = "ENVMAP_TYPE_CUBE";
    if (parameters.envMap) {
      switch (parameters.envMapMode) {
        case CubeReflectionMapping:
        case CubeRefractionMapping:
          envMapTypeDefine = "ENVMAP_TYPE_CUBE";
          break;
        case CubeUVReflectionMapping:
          envMapTypeDefine = "ENVMAP_TYPE_CUBE_UV";
          break;
      }
    }
    return envMapTypeDefine;
  }
  function generateEnvMapModeDefine(parameters) {
    let envMapModeDefine = "ENVMAP_MODE_REFLECTION";
    if (parameters.envMap) {
      switch (parameters.envMapMode) {
        case CubeRefractionMapping:
          envMapModeDefine = "ENVMAP_MODE_REFRACTION";
          break;
      }
    }
    return envMapModeDefine;
  }
  function generateEnvMapBlendingDefine(parameters) {
    let envMapBlendingDefine = "ENVMAP_BLENDING_NONE";
    if (parameters.envMap) {
      switch (parameters.combine) {
        case MultiplyOperation:
          envMapBlendingDefine = "ENVMAP_BLENDING_MULTIPLY";
          break;
        case MixOperation:
          envMapBlendingDefine = "ENVMAP_BLENDING_MIX";
          break;
        case AddOperation:
          envMapBlendingDefine = "ENVMAP_BLENDING_ADD";
          break;
      }
    }
    return envMapBlendingDefine;
  }
  function generateCubeUVSize(parameters) {
    const imageHeight = parameters.envMapCubeUVHeight;
    if (imageHeight === null) return null;
    const maxMip = Math.log2(imageHeight) - 2;
    const texelHeight = 1 / imageHeight;
    const texelWidth = 1 / (3 * Math.max(Math.pow(2, maxMip), 7 * 16));
    return { texelWidth, texelHeight, maxMip };
  }
  function WebGLProgram(renderer, cacheKey, parameters, bindingStates) {
    const gl = renderer.getContext();
    const defines = parameters.defines;
    let vertexShader = parameters.vertexShader;
    let fragmentShader = parameters.fragmentShader;
    const shadowMapTypeDefine = generateShadowMapTypeDefine(parameters);
    const envMapTypeDefine = generateEnvMapTypeDefine(parameters);
    const envMapModeDefine = generateEnvMapModeDefine(parameters);
    const envMapBlendingDefine = generateEnvMapBlendingDefine(parameters);
    const envMapCubeUVSize = generateCubeUVSize(parameters);
    const customExtensions = parameters.isWebGL2 ? "" : generateExtensions(parameters);
    const customVertexExtensions = generateVertexExtensions(parameters);
    const customDefines = generateDefines(defines);
    const program = gl.createProgram();
    let prefixVertex, prefixFragment;
    let versionString = parameters.glslVersion ? "#version " + parameters.glslVersion + "\n" : "";
    if (parameters.isRawShaderMaterial) {
      prefixVertex = [
        "#define SHADER_TYPE " + parameters.shaderType,
        "#define SHADER_NAME " + parameters.shaderName,
        customDefines
      ].filter(filterEmptyLine).join("\n");
      if (prefixVertex.length > 0) {
        prefixVertex += "\n";
      }
      prefixFragment = [
        customExtensions,
        "#define SHADER_TYPE " + parameters.shaderType,
        "#define SHADER_NAME " + parameters.shaderName,
        customDefines
      ].filter(filterEmptyLine).join("\n");
      if (prefixFragment.length > 0) {
        prefixFragment += "\n";
      }
    } else {
      prefixVertex = [
        generatePrecision(parameters),
        "#define SHADER_TYPE " + parameters.shaderType,
        "#define SHADER_NAME " + parameters.shaderName,
        customDefines,
        parameters.extensionClipCullDistance ? "#define USE_CLIP_DISTANCE" : "",
        parameters.batching ? "#define USE_BATCHING" : "",
        parameters.instancing ? "#define USE_INSTANCING" : "",
        parameters.instancingColor ? "#define USE_INSTANCING_COLOR" : "",
        parameters.useFog && parameters.fog ? "#define USE_FOG" : "",
        parameters.useFog && parameters.fogExp2 ? "#define FOG_EXP2" : "",
        parameters.map ? "#define USE_MAP" : "",
        parameters.envMap ? "#define USE_ENVMAP" : "",
        parameters.envMap ? "#define " + envMapModeDefine : "",
        parameters.lightMap ? "#define USE_LIGHTMAP" : "",
        parameters.aoMap ? "#define USE_AOMAP" : "",
        parameters.bumpMap ? "#define USE_BUMPMAP" : "",
        parameters.normalMap ? "#define USE_NORMALMAP" : "",
        parameters.normalMapObjectSpace ? "#define USE_NORMALMAP_OBJECTSPACE" : "",
        parameters.normalMapTangentSpace ? "#define USE_NORMALMAP_TANGENTSPACE" : "",
        parameters.displacementMap ? "#define USE_DISPLACEMENTMAP" : "",
        parameters.emissiveMap ? "#define USE_EMISSIVEMAP" : "",
        parameters.anisotropy ? "#define USE_ANISOTROPY" : "",
        parameters.anisotropyMap ? "#define USE_ANISOTROPYMAP" : "",
        parameters.clearcoatMap ? "#define USE_CLEARCOATMAP" : "",
        parameters.clearcoatRoughnessMap ? "#define USE_CLEARCOAT_ROUGHNESSMAP" : "",
        parameters.clearcoatNormalMap ? "#define USE_CLEARCOAT_NORMALMAP" : "",
        parameters.iridescenceMap ? "#define USE_IRIDESCENCEMAP" : "",
        parameters.iridescenceThicknessMap ? "#define USE_IRIDESCENCE_THICKNESSMAP" : "",
        parameters.specularMap ? "#define USE_SPECULARMAP" : "",
        parameters.specularColorMap ? "#define USE_SPECULAR_COLORMAP" : "",
        parameters.specularIntensityMap ? "#define USE_SPECULAR_INTENSITYMAP" : "",
        parameters.roughnessMap ? "#define USE_ROUGHNESSMAP" : "",
        parameters.metalnessMap ? "#define USE_METALNESSMAP" : "",
        parameters.alphaMap ? "#define USE_ALPHAMAP" : "",
        parameters.alphaHash ? "#define USE_ALPHAHASH" : "",
        parameters.transmission ? "#define USE_TRANSMISSION" : "",
        parameters.transmissionMap ? "#define USE_TRANSMISSIONMAP" : "",
        parameters.thicknessMap ? "#define USE_THICKNESSMAP" : "",
        parameters.sheenColorMap ? "#define USE_SHEEN_COLORMAP" : "",
        parameters.sheenRoughnessMap ? "#define USE_SHEEN_ROUGHNESSMAP" : "",
        //
        parameters.mapUv ? "#define MAP_UV " + parameters.mapUv : "",
        parameters.alphaMapUv ? "#define ALPHAMAP_UV " + parameters.alphaMapUv : "",
        parameters.lightMapUv ? "#define LIGHTMAP_UV " + parameters.lightMapUv : "",
        parameters.aoMapUv ? "#define AOMAP_UV " + parameters.aoMapUv : "",
        parameters.emissiveMapUv ? "#define EMISSIVEMAP_UV " + parameters.emissiveMapUv : "",
        parameters.bumpMapUv ? "#define BUMPMAP_UV " + parameters.bumpMapUv : "",
        parameters.normalMapUv ? "#define NORMALMAP_UV " + parameters.normalMapUv : "",
        parameters.displacementMapUv ? "#define DISPLACEMENTMAP_UV " + parameters.displacementMapUv : "",
        parameters.metalnessMapUv ? "#define METALNESSMAP_UV " + parameters.metalnessMapUv : "",
        parameters.roughnessMapUv ? "#define ROUGHNESSMAP_UV " + parameters.roughnessMapUv : "",
        parameters.anisotropyMapUv ? "#define ANISOTROPYMAP_UV " + parameters.anisotropyMapUv : "",
        parameters.clearcoatMapUv ? "#define CLEARCOATMAP_UV " + parameters.clearcoatMapUv : "",
        parameters.clearcoatNormalMapUv ? "#define CLEARCOAT_NORMALMAP_UV " + parameters.clearcoatNormalMapUv : "",
        parameters.clearcoatRoughnessMapUv ? "#define CLEARCOAT_ROUGHNESSMAP_UV " + parameters.clearcoatRoughnessMapUv : "",
        parameters.iridescenceMapUv ? "#define IRIDESCENCEMAP_UV " + parameters.iridescenceMapUv : "",
        parameters.iridescenceThicknessMapUv ? "#define IRIDESCENCE_THICKNESSMAP_UV " + parameters.iridescenceThicknessMapUv : "",
        parameters.sheenColorMapUv ? "#define SHEEN_COLORMAP_UV " + parameters.sheenColorMapUv : "",
        parameters.sheenRoughnessMapUv ? "#define SHEEN_ROUGHNESSMAP_UV " + parameters.sheenRoughnessMapUv : "",
        parameters.specularMapUv ? "#define SPECULARMAP_UV " + parameters.specularMapUv : "",
        parameters.specularColorMapUv ? "#define SPECULAR_COLORMAP_UV " + parameters.specularColorMapUv : "",
        parameters.specularIntensityMapUv ? "#define SPECULAR_INTENSITYMAP_UV " + parameters.specularIntensityMapUv : "",
        parameters.transmissionMapUv ? "#define TRANSMISSIONMAP_UV " + parameters.transmissionMapUv : "",
        parameters.thicknessMapUv ? "#define THICKNESSMAP_UV " + parameters.thicknessMapUv : "",
        //
        parameters.vertexTangents && parameters.flatShading === false ? "#define USE_TANGENT" : "",
        parameters.vertexColors ? "#define USE_COLOR" : "",
        parameters.vertexAlphas ? "#define USE_COLOR_ALPHA" : "",
        parameters.vertexUv1s ? "#define USE_UV1" : "",
        parameters.vertexUv2s ? "#define USE_UV2" : "",
        parameters.vertexUv3s ? "#define USE_UV3" : "",
        parameters.pointsUvs ? "#define USE_POINTS_UV" : "",
        parameters.flatShading ? "#define FLAT_SHADED" : "",
        parameters.skinning ? "#define USE_SKINNING" : "",
        parameters.morphTargets ? "#define USE_MORPHTARGETS" : "",
        parameters.morphNormals && parameters.flatShading === false ? "#define USE_MORPHNORMALS" : "",
        parameters.morphColors && parameters.isWebGL2 ? "#define USE_MORPHCOLORS" : "",
        parameters.morphTargetsCount > 0 && parameters.isWebGL2 ? "#define MORPHTARGETS_TEXTURE" : "",
        parameters.morphTargetsCount > 0 && parameters.isWebGL2 ? "#define MORPHTARGETS_TEXTURE_STRIDE " + parameters.morphTextureStride : "",
        parameters.morphTargetsCount > 0 && parameters.isWebGL2 ? "#define MORPHTARGETS_COUNT " + parameters.morphTargetsCount : "",
        parameters.doubleSided ? "#define DOUBLE_SIDED" : "",
        parameters.flipSided ? "#define FLIP_SIDED" : "",
        parameters.shadowMapEnabled ? "#define USE_SHADOWMAP" : "",
        parameters.shadowMapEnabled ? "#define " + shadowMapTypeDefine : "",
        parameters.sizeAttenuation ? "#define USE_SIZEATTENUATION" : "",
        parameters.numLightProbes > 0 ? "#define USE_LIGHT_PROBES" : "",
        parameters.useLegacyLights ? "#define LEGACY_LIGHTS" : "",
        parameters.logarithmicDepthBuffer ? "#define USE_LOGDEPTHBUF" : "",
        parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ? "#define USE_LOGDEPTHBUF_EXT" : "",
        "uniform mat4 modelMatrix;",
        "uniform mat4 modelViewMatrix;",
        "uniform mat4 projectionMatrix;",
        "uniform mat4 viewMatrix;",
        "uniform mat3 normalMatrix;",
        "uniform vec3 cameraPosition;",
        "uniform bool isOrthographic;",
        "#ifdef USE_INSTANCING",
        "	attribute mat4 instanceMatrix;",
        "#endif",
        "#ifdef USE_INSTANCING_COLOR",
        "	attribute vec3 instanceColor;",
        "#endif",
        "attribute vec3 position;",
        "attribute vec3 normal;",
        "attribute vec2 uv;",
        "#ifdef USE_UV1",
        "	attribute vec2 uv1;",
        "#endif",
        "#ifdef USE_UV2",
        "	attribute vec2 uv2;",
        "#endif",
        "#ifdef USE_UV3",
        "	attribute vec2 uv3;",
        "#endif",
        "#ifdef USE_TANGENT",
        "	attribute vec4 tangent;",
        "#endif",
        "#if defined( USE_COLOR_ALPHA )",
        "	attribute vec4 color;",
        "#elif defined( USE_COLOR )",
        "	attribute vec3 color;",
        "#endif",
        "#if ( defined( USE_MORPHTARGETS ) && ! defined( MORPHTARGETS_TEXTURE ) )",
        "	attribute vec3 morphTarget0;",
        "	attribute vec3 morphTarget1;",
        "	attribute vec3 morphTarget2;",
        "	attribute vec3 morphTarget3;",
        "	#ifdef USE_MORPHNORMALS",
        "		attribute vec3 morphNormal0;",
        "		attribute vec3 morphNormal1;",
        "		attribute vec3 morphNormal2;",
        "		attribute vec3 morphNormal3;",
        "	#else",
        "		attribute vec3 morphTarget4;",
        "		attribute vec3 morphTarget5;",
        "		attribute vec3 morphTarget6;",
        "		attribute vec3 morphTarget7;",
        "	#endif",
        "#endif",
        "#ifdef USE_SKINNING",
        "	attribute vec4 skinIndex;",
        "	attribute vec4 skinWeight;",
        "#endif",
        "\n"
      ].filter(filterEmptyLine).join("\n");
      prefixFragment = [
        customExtensions,
        generatePrecision(parameters),
        "#define SHADER_TYPE " + parameters.shaderType,
        "#define SHADER_NAME " + parameters.shaderName,
        customDefines,
        parameters.useFog && parameters.fog ? "#define USE_FOG" : "",
        parameters.useFog && parameters.fogExp2 ? "#define FOG_EXP2" : "",
        parameters.map ? "#define USE_MAP" : "",
        parameters.matcap ? "#define USE_MATCAP" : "",
        parameters.envMap ? "#define USE_ENVMAP" : "",
        parameters.envMap ? "#define " + envMapTypeDefine : "",
        parameters.envMap ? "#define " + envMapModeDefine : "",
        parameters.envMap ? "#define " + envMapBlendingDefine : "",
        envMapCubeUVSize ? "#define CUBEUV_TEXEL_WIDTH " + envMapCubeUVSize.texelWidth : "",
        envMapCubeUVSize ? "#define CUBEUV_TEXEL_HEIGHT " + envMapCubeUVSize.texelHeight : "",
        envMapCubeUVSize ? "#define CUBEUV_MAX_MIP " + envMapCubeUVSize.maxMip + ".0" : "",
        parameters.lightMap ? "#define USE_LIGHTMAP" : "",
        parameters.aoMap ? "#define USE_AOMAP" : "",
        parameters.bumpMap ? "#define USE_BUMPMAP" : "",
        parameters.normalMap ? "#define USE_NORMALMAP" : "",
        parameters.normalMapObjectSpace ? "#define USE_NORMALMAP_OBJECTSPACE" : "",
        parameters.normalMapTangentSpace ? "#define USE_NORMALMAP_TANGENTSPACE" : "",
        parameters.emissiveMap ? "#define USE_EMISSIVEMAP" : "",
        parameters.anisotropy ? "#define USE_ANISOTROPY" : "",
        parameters.anisotropyMap ? "#define USE_ANISOTROPYMAP" : "",
        parameters.clearcoat ? "#define USE_CLEARCOAT" : "",
        parameters.clearcoatMap ? "#define USE_CLEARCOATMAP" : "",
        parameters.clearcoatRoughnessMap ? "#define USE_CLEARCOAT_ROUGHNESSMAP" : "",
        parameters.clearcoatNormalMap ? "#define USE_CLEARCOAT_NORMALMAP" : "",
        parameters.iridescence ? "#define USE_IRIDESCENCE" : "",
        parameters.iridescenceMap ? "#define USE_IRIDESCENCEMAP" : "",
        parameters.iridescenceThicknessMap ? "#define USE_IRIDESCENCE_THICKNESSMAP" : "",
        parameters.specularMap ? "#define USE_SPECULARMAP" : "",
        parameters.specularColorMap ? "#define USE_SPECULAR_COLORMAP" : "",
        parameters.specularIntensityMap ? "#define USE_SPECULAR_INTENSITYMAP" : "",
        parameters.roughnessMap ? "#define USE_ROUGHNESSMAP" : "",
        parameters.metalnessMap ? "#define USE_METALNESSMAP" : "",
        parameters.alphaMap ? "#define USE_ALPHAMAP" : "",
        parameters.alphaTest ? "#define USE_ALPHATEST" : "",
        parameters.alphaHash ? "#define USE_ALPHAHASH" : "",
        parameters.sheen ? "#define USE_SHEEN" : "",
        parameters.sheenColorMap ? "#define USE_SHEEN_COLORMAP" : "",
        parameters.sheenRoughnessMap ? "#define USE_SHEEN_ROUGHNESSMAP" : "",
        parameters.transmission ? "#define USE_TRANSMISSION" : "",
        parameters.transmissionMap ? "#define USE_TRANSMISSIONMAP" : "",
        parameters.thicknessMap ? "#define USE_THICKNESSMAP" : "",
        parameters.vertexTangents && parameters.flatShading === false ? "#define USE_TANGENT" : "",
        parameters.vertexColors || parameters.instancingColor ? "#define USE_COLOR" : "",
        parameters.vertexAlphas ? "#define USE_COLOR_ALPHA" : "",
        parameters.vertexUv1s ? "#define USE_UV1" : "",
        parameters.vertexUv2s ? "#define USE_UV2" : "",
        parameters.vertexUv3s ? "#define USE_UV3" : "",
        parameters.pointsUvs ? "#define USE_POINTS_UV" : "",
        parameters.gradientMap ? "#define USE_GRADIENTMAP" : "",
        parameters.flatShading ? "#define FLAT_SHADED" : "",
        parameters.doubleSided ? "#define DOUBLE_SIDED" : "",
        parameters.flipSided ? "#define FLIP_SIDED" : "",
        parameters.shadowMapEnabled ? "#define USE_SHADOWMAP" : "",
        parameters.shadowMapEnabled ? "#define " + shadowMapTypeDefine : "",
        parameters.premultipliedAlpha ? "#define PREMULTIPLIED_ALPHA" : "",
        parameters.numLightProbes > 0 ? "#define USE_LIGHT_PROBES" : "",
        parameters.useLegacyLights ? "#define LEGACY_LIGHTS" : "",
        parameters.decodeVideoTexture ? "#define DECODE_VIDEO_TEXTURE" : "",
        parameters.logarithmicDepthBuffer ? "#define USE_LOGDEPTHBUF" : "",
        parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ? "#define USE_LOGDEPTHBUF_EXT" : "",
        "uniform mat4 viewMatrix;",
        "uniform vec3 cameraPosition;",
        "uniform bool isOrthographic;",
        parameters.toneMapping !== NoToneMapping ? "#define TONE_MAPPING" : "",
        parameters.toneMapping !== NoToneMapping ? ShaderChunk["tonemapping_pars_fragment"] : "",
        // this code is required here because it is used by the toneMapping() function defined below
        parameters.toneMapping !== NoToneMapping ? getToneMappingFunction("toneMapping", parameters.toneMapping) : "",
        parameters.dithering ? "#define DITHERING" : "",
        parameters.opaque ? "#define OPAQUE" : "",
        ShaderChunk["colorspace_pars_fragment"],
        // this code is required here because it is used by the various encoding/decoding function defined below
        getTexelEncodingFunction("linearToOutputTexel", parameters.outputColorSpace),
        parameters.useDepthPacking ? "#define DEPTH_PACKING " + parameters.depthPacking : "",
        "\n"
      ].filter(filterEmptyLine).join("\n");
    }
    vertexShader = resolveIncludes(vertexShader);
    vertexShader = replaceLightNums(vertexShader, parameters);
    vertexShader = replaceClippingPlaneNums(vertexShader, parameters);
    fragmentShader = resolveIncludes(fragmentShader);
    fragmentShader = replaceLightNums(fragmentShader, parameters);
    fragmentShader = replaceClippingPlaneNums(fragmentShader, parameters);
    vertexShader = unrollLoops(vertexShader);
    fragmentShader = unrollLoops(fragmentShader);
    if (parameters.isWebGL2 && parameters.isRawShaderMaterial !== true) {
      versionString = "#version 300 es\n";
      prefixVertex = [
        customVertexExtensions,
        "precision mediump sampler2DArray;",
        "#define attribute in",
        "#define varying out",
        "#define texture2D texture"
      ].join("\n") + "\n" + prefixVertex;
      prefixFragment = [
        "precision mediump sampler2DArray;",
        "#define varying in",
        parameters.glslVersion === GLSL3 ? "" : "layout(location = 0) out highp vec4 pc_fragColor;",
        parameters.glslVersion === GLSL3 ? "" : "#define gl_FragColor pc_fragColor",
        "#define gl_FragDepthEXT gl_FragDepth",
        "#define texture2D texture",
        "#define textureCube texture",
        "#define texture2DProj textureProj",
        "#define texture2DLodEXT textureLod",
        "#define texture2DProjLodEXT textureProjLod",
        "#define textureCubeLodEXT textureLod",
        "#define texture2DGradEXT textureGrad",
        "#define texture2DProjGradEXT textureProjGrad",
        "#define textureCubeGradEXT textureGrad"
      ].join("\n") + "\n" + prefixFragment;
    }
    const vertexGlsl = versionString + prefixVertex + vertexShader;
    const fragmentGlsl = versionString + prefixFragment + fragmentShader;
    const glVertexShader = WebGLShader(gl, gl.VERTEX_SHADER, vertexGlsl);
    const glFragmentShader = WebGLShader(gl, gl.FRAGMENT_SHADER, fragmentGlsl);
    gl.attachShader(program, glVertexShader);
    gl.attachShader(program, glFragmentShader);
    if (parameters.index0AttributeName !== void 0) {
      gl.bindAttribLocation(program, 0, parameters.index0AttributeName);
    } else if (parameters.morphTargets === true) {
      gl.bindAttribLocation(program, 0, "position");
    }
    gl.linkProgram(program);
    function onFirstUse(self2) {
      if (renderer.debug.checkShaderErrors) {
        const programLog = gl.getProgramInfoLog(program).trim();
        const vertexLog = gl.getShaderInfoLog(glVertexShader).trim();
        const fragmentLog = gl.getShaderInfoLog(glFragmentShader).trim();
        let runnable = true;
        let haveDiagnostics = true;
        if (gl.getProgramParameter(program, gl.LINK_STATUS) === false) {
          runnable = false;
          if (typeof renderer.debug.onShaderError === "function") {
            renderer.debug.onShaderError(gl, program, glVertexShader, glFragmentShader);
          } else {
            const vertexErrors = getShaderErrors(gl, glVertexShader, "vertex");
            const fragmentErrors = getShaderErrors(gl, glFragmentShader, "fragment");
            console.error(
              "THREE.WebGLProgram: Shader Error " + gl.getError() + " - VALIDATE_STATUS " + gl.getProgramParameter(program, gl.VALIDATE_STATUS) + "\n\nProgram Info Log: " + programLog + "\n" + vertexErrors + "\n" + fragmentErrors
            );
          }
        } else if (programLog !== "") {
          console.warn("THREE.WebGLProgram: Program Info Log:", programLog);
        } else if (vertexLog === "" || fragmentLog === "") {
          haveDiagnostics = false;
        }
        if (haveDiagnostics) {
          self2.diagnostics = {
            runnable,
            programLog,
            vertexShader: {
              log: vertexLog,
              prefix: prefixVertex
            },
            fragmentShader: {
              log: fragmentLog,
              prefix: prefixFragment
            }
          };
        }
      }
      gl.deleteShader(glVertexShader);
      gl.deleteShader(glFragmentShader);
      cachedUniforms = new WebGLUniforms(gl, program);
      cachedAttributes = fetchAttributeLocations(gl, program);
    }
    let cachedUniforms;
    this.getUniforms = function() {
      if (cachedUniforms === void 0) {
        onFirstUse(this);
      }
      return cachedUniforms;
    };
    let cachedAttributes;
    this.getAttributes = function() {
      if (cachedAttributes === void 0) {
        onFirstUse(this);
      }
      return cachedAttributes;
    };
    let programReady = parameters.rendererExtensionParallelShaderCompile === false;
    this.isReady = function() {
      if (programReady === false) {
        programReady = gl.getProgramParameter(program, COMPLETION_STATUS_KHR);
      }
      return programReady;
    };
    this.destroy = function() {
      bindingStates.releaseStatesOfProgram(this);
      gl.deleteProgram(program);
      this.program = void 0;
    };
    this.type = parameters.shaderType;
    this.name = parameters.shaderName;
    this.id = programIdCount++;
    this.cacheKey = cacheKey;
    this.usedTimes = 1;
    this.program = program;
    this.vertexShader = glVertexShader;
    this.fragmentShader = glFragmentShader;
    return this;
  }
  var _id$1 = 0;
  var WebGLShaderCache = class {
    constructor() {
      this.shaderCache = /* @__PURE__ */ new Map();
      this.materialCache = /* @__PURE__ */ new Map();
    }
    update(material) {
      const vertexShader = material.vertexShader;
      const fragmentShader = material.fragmentShader;
      const vertexShaderStage = this._getShaderStage(vertexShader);
      const fragmentShaderStage = this._getShaderStage(fragmentShader);
      const materialShaders = this._getShaderCacheForMaterial(material);
      if (materialShaders.has(vertexShaderStage) === false) {
        materialShaders.add(vertexShaderStage);
        vertexShaderStage.usedTimes++;
      }
      if (materialShaders.has(fragmentShaderStage) === false) {
        materialShaders.add(fragmentShaderStage);
        fragmentShaderStage.usedTimes++;
      }
      return this;
    }
    remove(material) {
      const materialShaders = this.materialCache.get(material);
      for (const shaderStage of materialShaders) {
        shaderStage.usedTimes--;
        if (shaderStage.usedTimes === 0) this.shaderCache.delete(shaderStage.code);
      }
      this.materialCache.delete(material);
      return this;
    }
    getVertexShaderID(material) {
      return this._getShaderStage(material.vertexShader).id;
    }
    getFragmentShaderID(material) {
      return this._getShaderStage(material.fragmentShader).id;
    }
    dispose() {
      this.shaderCache.clear();
      this.materialCache.clear();
    }
    _getShaderCacheForMaterial(material) {
      const cache = this.materialCache;
      let set = cache.get(material);
      if (set === void 0) {
        set = /* @__PURE__ */ new Set();
        cache.set(material, set);
      }
      return set;
    }
    _getShaderStage(code) {
      const cache = this.shaderCache;
      let stage = cache.get(code);
      if (stage === void 0) {
        stage = new WebGLShaderStage(code);
        cache.set(code, stage);
      }
      return stage;
    }
  };
  var WebGLShaderStage = class {
    constructor(code) {
      this.id = _id$1++;
      this.code = code;
      this.usedTimes = 0;
    }
  };
  function WebGLPrograms(renderer, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping) {
    const _programLayers = new Layers();
    const _customShaders = new WebGLShaderCache();
    const programs = [];
    const IS_WEBGL2 = capabilities.isWebGL2;
    const logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
    const SUPPORTS_VERTEX_TEXTURES = capabilities.vertexTextures;
    let precision = capabilities.precision;
    const shaderIDs = {
      MeshDepthMaterial: "depth",
      MeshDistanceMaterial: "distanceRGBA",
      MeshNormalMaterial: "normal",
      MeshBasicMaterial: "basic",
      MeshLambertMaterial: "lambert",
      MeshPhongMaterial: "phong",
      MeshToonMaterial: "toon",
      MeshStandardMaterial: "physical",
      MeshPhysicalMaterial: "physical",
      MeshMatcapMaterial: "matcap",
      LineBasicMaterial: "basic",
      LineDashedMaterial: "dashed",
      PointsMaterial: "points",
      ShadowMaterial: "shadow",
      SpriteMaterial: "sprite"
    };
    function getChannel(value) {
      if (value === 0) return "uv";
      return `uv${value}`;
    }
    function getParameters(material, lights, shadows, scene, object) {
      const fog = scene.fog;
      const geometry = object.geometry;
      const environment = material.isMeshStandardMaterial ? scene.environment : null;
      const envMap = (material.isMeshStandardMaterial ? cubeuvmaps : cubemaps).get(material.envMap || environment);
      const envMapCubeUVHeight = !!envMap && envMap.mapping === CubeUVReflectionMapping ? envMap.image.height : null;
      const shaderID = shaderIDs[material.type];
      if (material.precision !== null) {
        precision = capabilities.getMaxPrecision(material.precision);
        if (precision !== material.precision) {
          console.warn("THREE.WebGLProgram.getParameters:", material.precision, "not supported, using", precision, "instead.");
        }
      }
      const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
      const morphTargetsCount = morphAttribute !== void 0 ? morphAttribute.length : 0;
      let morphTextureStride = 0;
      if (geometry.morphAttributes.position !== void 0) morphTextureStride = 1;
      if (geometry.morphAttributes.normal !== void 0) morphTextureStride = 2;
      if (geometry.morphAttributes.color !== void 0) morphTextureStride = 3;
      let vertexShader, fragmentShader;
      let customVertexShaderID, customFragmentShaderID;
      if (shaderID) {
        const shader = ShaderLib[shaderID];
        vertexShader = shader.vertexShader;
        fragmentShader = shader.fragmentShader;
      } else {
        vertexShader = material.vertexShader;
        fragmentShader = material.fragmentShader;
        _customShaders.update(material);
        customVertexShaderID = _customShaders.getVertexShaderID(material);
        customFragmentShaderID = _customShaders.getFragmentShaderID(material);
      }
      const currentRenderTarget = renderer.getRenderTarget();
      const IS_INSTANCEDMESH = object.isInstancedMesh === true;
      const IS_BATCHEDMESH = object.isBatchedMesh === true;
      const HAS_MAP = !!material.map;
      const HAS_MATCAP = !!material.matcap;
      const HAS_ENVMAP = !!envMap;
      const HAS_AOMAP = !!material.aoMap;
      const HAS_LIGHTMAP = !!material.lightMap;
      const HAS_BUMPMAP = !!material.bumpMap;
      const HAS_NORMALMAP = !!material.normalMap;
      const HAS_DISPLACEMENTMAP = !!material.displacementMap;
      const HAS_EMISSIVEMAP = !!material.emissiveMap;
      const HAS_METALNESSMAP = !!material.metalnessMap;
      const HAS_ROUGHNESSMAP = !!material.roughnessMap;
      const HAS_ANISOTROPY = material.anisotropy > 0;
      const HAS_CLEARCOAT = material.clearcoat > 0;
      const HAS_IRIDESCENCE = material.iridescence > 0;
      const HAS_SHEEN = material.sheen > 0;
      const HAS_TRANSMISSION = material.transmission > 0;
      const HAS_ANISOTROPYMAP = HAS_ANISOTROPY && !!material.anisotropyMap;
      const HAS_CLEARCOATMAP = HAS_CLEARCOAT && !!material.clearcoatMap;
      const HAS_CLEARCOAT_NORMALMAP = HAS_CLEARCOAT && !!material.clearcoatNormalMap;
      const HAS_CLEARCOAT_ROUGHNESSMAP = HAS_CLEARCOAT && !!material.clearcoatRoughnessMap;
      const HAS_IRIDESCENCEMAP = HAS_IRIDESCENCE && !!material.iridescenceMap;
      const HAS_IRIDESCENCE_THICKNESSMAP = HAS_IRIDESCENCE && !!material.iridescenceThicknessMap;
      const HAS_SHEEN_COLORMAP = HAS_SHEEN && !!material.sheenColorMap;
      const HAS_SHEEN_ROUGHNESSMAP = HAS_SHEEN && !!material.sheenRoughnessMap;
      const HAS_SPECULARMAP = !!material.specularMap;
      const HAS_SPECULAR_COLORMAP = !!material.specularColorMap;
      const HAS_SPECULAR_INTENSITYMAP = !!material.specularIntensityMap;
      const HAS_TRANSMISSIONMAP = HAS_TRANSMISSION && !!material.transmissionMap;
      const HAS_THICKNESSMAP = HAS_TRANSMISSION && !!material.thicknessMap;
      const HAS_GRADIENTMAP = !!material.gradientMap;
      const HAS_ALPHAMAP = !!material.alphaMap;
      const HAS_ALPHATEST = material.alphaTest > 0;
      const HAS_ALPHAHASH = !!material.alphaHash;
      const HAS_EXTENSIONS = !!material.extensions;
      const HAS_ATTRIBUTE_UV1 = !!geometry.attributes.uv1;
      const HAS_ATTRIBUTE_UV2 = !!geometry.attributes.uv2;
      const HAS_ATTRIBUTE_UV3 = !!geometry.attributes.uv3;
      let toneMapping = NoToneMapping;
      if (material.toneMapped) {
        if (currentRenderTarget === null || currentRenderTarget.isXRRenderTarget === true) {
          toneMapping = renderer.toneMapping;
        }
      }
      const parameters = {
        isWebGL2: IS_WEBGL2,
        shaderID,
        shaderType: material.type,
        shaderName: material.name,
        vertexShader,
        fragmentShader,
        defines: material.defines,
        customVertexShaderID,
        customFragmentShaderID,
        isRawShaderMaterial: material.isRawShaderMaterial === true,
        glslVersion: material.glslVersion,
        precision,
        batching: IS_BATCHEDMESH,
        instancing: IS_INSTANCEDMESH,
        instancingColor: IS_INSTANCEDMESH && object.instanceColor !== null,
        supportsVertexTextures: SUPPORTS_VERTEX_TEXTURES,
        outputColorSpace: currentRenderTarget === null ? renderer.outputColorSpace : currentRenderTarget.isXRRenderTarget === true ? currentRenderTarget.texture.colorSpace : LinearSRGBColorSpace,
        map: HAS_MAP,
        matcap: HAS_MATCAP,
        envMap: HAS_ENVMAP,
        envMapMode: HAS_ENVMAP && envMap.mapping,
        envMapCubeUVHeight,
        aoMap: HAS_AOMAP,
        lightMap: HAS_LIGHTMAP,
        bumpMap: HAS_BUMPMAP,
        normalMap: HAS_NORMALMAP,
        displacementMap: SUPPORTS_VERTEX_TEXTURES && HAS_DISPLACEMENTMAP,
        emissiveMap: HAS_EMISSIVEMAP,
        normalMapObjectSpace: HAS_NORMALMAP && material.normalMapType === ObjectSpaceNormalMap,
        normalMapTangentSpace: HAS_NORMALMAP && material.normalMapType === TangentSpaceNormalMap,
        metalnessMap: HAS_METALNESSMAP,
        roughnessMap: HAS_ROUGHNESSMAP,
        anisotropy: HAS_ANISOTROPY,
        anisotropyMap: HAS_ANISOTROPYMAP,
        clearcoat: HAS_CLEARCOAT,
        clearcoatMap: HAS_CLEARCOATMAP,
        clearcoatNormalMap: HAS_CLEARCOAT_NORMALMAP,
        clearcoatRoughnessMap: HAS_CLEARCOAT_ROUGHNESSMAP,
        iridescence: HAS_IRIDESCENCE,
        iridescenceMap: HAS_IRIDESCENCEMAP,
        iridescenceThicknessMap: HAS_IRIDESCENCE_THICKNESSMAP,
        sheen: HAS_SHEEN,
        sheenColorMap: HAS_SHEEN_COLORMAP,
        sheenRoughnessMap: HAS_SHEEN_ROUGHNESSMAP,
        specularMap: HAS_SPECULARMAP,
        specularColorMap: HAS_SPECULAR_COLORMAP,
        specularIntensityMap: HAS_SPECULAR_INTENSITYMAP,
        transmission: HAS_TRANSMISSION,
        transmissionMap: HAS_TRANSMISSIONMAP,
        thicknessMap: HAS_THICKNESSMAP,
        gradientMap: HAS_GRADIENTMAP,
        opaque: material.transparent === false && material.blending === NormalBlending,
        alphaMap: HAS_ALPHAMAP,
        alphaTest: HAS_ALPHATEST,
        alphaHash: HAS_ALPHAHASH,
        combine: material.combine,
        //
        mapUv: HAS_MAP && getChannel(material.map.channel),
        aoMapUv: HAS_AOMAP && getChannel(material.aoMap.channel),
        lightMapUv: HAS_LIGHTMAP && getChannel(material.lightMap.channel),
        bumpMapUv: HAS_BUMPMAP && getChannel(material.bumpMap.channel),
        normalMapUv: HAS_NORMALMAP && getChannel(material.normalMap.channel),
        displacementMapUv: HAS_DISPLACEMENTMAP && getChannel(material.displacementMap.channel),
        emissiveMapUv: HAS_EMISSIVEMAP && getChannel(material.emissiveMap.channel),
        metalnessMapUv: HAS_METALNESSMAP && getChannel(material.metalnessMap.channel),
        roughnessMapUv: HAS_ROUGHNESSMAP && getChannel(material.roughnessMap.channel),
        anisotropyMapUv: HAS_ANISOTROPYMAP && getChannel(material.anisotropyMap.channel),
        clearcoatMapUv: HAS_CLEARCOATMAP && getChannel(material.clearcoatMap.channel),
        clearcoatNormalMapUv: HAS_CLEARCOAT_NORMALMAP && getChannel(material.clearcoatNormalMap.channel),
        clearcoatRoughnessMapUv: HAS_CLEARCOAT_ROUGHNESSMAP && getChannel(material.clearcoatRoughnessMap.channel),
        iridescenceMapUv: HAS_IRIDESCENCEMAP && getChannel(material.iridescenceMap.channel),
        iridescenceThicknessMapUv: HAS_IRIDESCENCE_THICKNESSMAP && getChannel(material.iridescenceThicknessMap.channel),
        sheenColorMapUv: HAS_SHEEN_COLORMAP && getChannel(material.sheenColorMap.channel),
        sheenRoughnessMapUv: HAS_SHEEN_ROUGHNESSMAP && getChannel(material.sheenRoughnessMap.channel),
        specularMapUv: HAS_SPECULARMAP && getChannel(material.specularMap.channel),
        specularColorMapUv: HAS_SPECULAR_COLORMAP && getChannel(material.specularColorMap.channel),
        specularIntensityMapUv: HAS_SPECULAR_INTENSITYMAP && getChannel(material.specularIntensityMap.channel),
        transmissionMapUv: HAS_TRANSMISSIONMAP && getChannel(material.transmissionMap.channel),
        thicknessMapUv: HAS_THICKNESSMAP && getChannel(material.thicknessMap.channel),
        alphaMapUv: HAS_ALPHAMAP && getChannel(material.alphaMap.channel),
        //
        vertexTangents: !!geometry.attributes.tangent && (HAS_NORMALMAP || HAS_ANISOTROPY),
        vertexColors: material.vertexColors,
        vertexAlphas: material.vertexColors === true && !!geometry.attributes.color && geometry.attributes.color.itemSize === 4,
        vertexUv1s: HAS_ATTRIBUTE_UV1,
        vertexUv2s: HAS_ATTRIBUTE_UV2,
        vertexUv3s: HAS_ATTRIBUTE_UV3,
        pointsUvs: object.isPoints === true && !!geometry.attributes.uv && (HAS_MAP || HAS_ALPHAMAP),
        fog: !!fog,
        useFog: material.fog === true,
        fogExp2: fog && fog.isFogExp2,
        flatShading: material.flatShading === true,
        sizeAttenuation: material.sizeAttenuation === true,
        logarithmicDepthBuffer,
        skinning: object.isSkinnedMesh === true,
        morphTargets: geometry.morphAttributes.position !== void 0,
        morphNormals: geometry.morphAttributes.normal !== void 0,
        morphColors: geometry.morphAttributes.color !== void 0,
        morphTargetsCount,
        morphTextureStride,
        numDirLights: lights.directional.length,
        numPointLights: lights.point.length,
        numSpotLights: lights.spot.length,
        numSpotLightMaps: lights.spotLightMap.length,
        numRectAreaLights: lights.rectArea.length,
        numHemiLights: lights.hemi.length,
        numDirLightShadows: lights.directionalShadowMap.length,
        numPointLightShadows: lights.pointShadowMap.length,
        numSpotLightShadows: lights.spotShadowMap.length,
        numSpotLightShadowsWithMaps: lights.numSpotLightShadowsWithMaps,
        numLightProbes: lights.numLightProbes,
        numClippingPlanes: clipping.numPlanes,
        numClipIntersection: clipping.numIntersection,
        dithering: material.dithering,
        shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
        shadowMapType: renderer.shadowMap.type,
        toneMapping,
        useLegacyLights: renderer._useLegacyLights,
        decodeVideoTexture: HAS_MAP && material.map.isVideoTexture === true && ColorManagement.getTransfer(material.map.colorSpace) === SRGBTransfer,
        premultipliedAlpha: material.premultipliedAlpha,
        doubleSided: material.side === DoubleSide,
        flipSided: material.side === BackSide,
        useDepthPacking: material.depthPacking >= 0,
        depthPacking: material.depthPacking || 0,
        index0AttributeName: material.index0AttributeName,
        extensionDerivatives: HAS_EXTENSIONS && material.extensions.derivatives === true,
        extensionFragDepth: HAS_EXTENSIONS && material.extensions.fragDepth === true,
        extensionDrawBuffers: HAS_EXTENSIONS && material.extensions.drawBuffers === true,
        extensionShaderTextureLOD: HAS_EXTENSIONS && material.extensions.shaderTextureLOD === true,
        extensionClipCullDistance: HAS_EXTENSIONS && material.extensions.clipCullDistance && extensions.has("WEBGL_clip_cull_distance"),
        rendererExtensionFragDepth: IS_WEBGL2 || extensions.has("EXT_frag_depth"),
        rendererExtensionDrawBuffers: IS_WEBGL2 || extensions.has("WEBGL_draw_buffers"),
        rendererExtensionShaderTextureLod: IS_WEBGL2 || extensions.has("EXT_shader_texture_lod"),
        rendererExtensionParallelShaderCompile: extensions.has("KHR_parallel_shader_compile"),
        customProgramCacheKey: material.customProgramCacheKey()
      };
      return parameters;
    }
    function getProgramCacheKey(parameters) {
      const array = [];
      if (parameters.shaderID) {
        array.push(parameters.shaderID);
      } else {
        array.push(parameters.customVertexShaderID);
        array.push(parameters.customFragmentShaderID);
      }
      if (parameters.defines !== void 0) {
        for (const name in parameters.defines) {
          array.push(name);
          array.push(parameters.defines[name]);
        }
      }
      if (parameters.isRawShaderMaterial === false) {
        getProgramCacheKeyParameters(array, parameters);
        getProgramCacheKeyBooleans(array, parameters);
        array.push(renderer.outputColorSpace);
      }
      array.push(parameters.customProgramCacheKey);
      return array.join();
    }
    function getProgramCacheKeyParameters(array, parameters) {
      array.push(parameters.precision);
      array.push(parameters.outputColorSpace);
      array.push(parameters.envMapMode);
      array.push(parameters.envMapCubeUVHeight);
      array.push(parameters.mapUv);
      array.push(parameters.alphaMapUv);
      array.push(parameters.lightMapUv);
      array.push(parameters.aoMapUv);
      array.push(parameters.bumpMapUv);
      array.push(parameters.normalMapUv);
      array.push(parameters.displacementMapUv);
      array.push(parameters.emissiveMapUv);
      array.push(parameters.metalnessMapUv);
      array.push(parameters.roughnessMapUv);
      array.push(parameters.anisotropyMapUv);
      array.push(parameters.clearcoatMapUv);
      array.push(parameters.clearcoatNormalMapUv);
      array.push(parameters.clearcoatRoughnessMapUv);
      array.push(parameters.iridescenceMapUv);
      array.push(parameters.iridescenceThicknessMapUv);
      array.push(parameters.sheenColorMapUv);
      array.push(parameters.sheenRoughnessMapUv);
      array.push(parameters.specularMapUv);
      array.push(parameters.specularColorMapUv);
      array.push(parameters.specularIntensityMapUv);
      array.push(parameters.transmissionMapUv);
      array.push(parameters.thicknessMapUv);
      array.push(parameters.combine);
      array.push(parameters.fogExp2);
      array.push(parameters.sizeAttenuation);
      array.push(parameters.morphTargetsCount);
      array.push(parameters.morphAttributeCount);
      array.push(parameters.numDirLights);
      array.push(parameters.numPointLights);
      array.push(parameters.numSpotLights);
      array.push(parameters.numSpotLightMaps);
      array.push(parameters.numHemiLights);
      array.push(parameters.numRectAreaLights);
      array.push(parameters.numDirLightShadows);
      array.push(parameters.numPointLightShadows);
      array.push(parameters.numSpotLightShadows);
      array.push(parameters.numSpotLightShadowsWithMaps);
      array.push(parameters.numLightProbes);
      array.push(parameters.shadowMapType);
      array.push(parameters.toneMapping);
      array.push(parameters.numClippingPlanes);
      array.push(parameters.numClipIntersection);
      array.push(parameters.depthPacking);
    }
    function getProgramCacheKeyBooleans(array, parameters) {
      _programLayers.disableAll();
      if (parameters.isWebGL2)
        _programLayers.enable(0);
      if (parameters.supportsVertexTextures)
        _programLayers.enable(1);
      if (parameters.instancing)
        _programLayers.enable(2);
      if (parameters.instancingColor)
        _programLayers.enable(3);
      if (parameters.matcap)
        _programLayers.enable(4);
      if (parameters.envMap)
        _programLayers.enable(5);
      if (parameters.normalMapObjectSpace)
        _programLayers.enable(6);
      if (parameters.normalMapTangentSpace)
        _programLayers.enable(7);
      if (parameters.clearcoat)
        _programLayers.enable(8);
      if (parameters.iridescence)
        _programLayers.enable(9);
      if (parameters.alphaTest)
        _programLayers.enable(10);
      if (parameters.vertexColors)
        _programLayers.enable(11);
      if (parameters.vertexAlphas)
        _programLayers.enable(12);
      if (parameters.vertexUv1s)
        _programLayers.enable(13);
      if (parameters.vertexUv2s)
        _programLayers.enable(14);
      if (parameters.vertexUv3s)
        _programLayers.enable(15);
      if (parameters.vertexTangents)
        _programLayers.enable(16);
      if (parameters.anisotropy)
        _programLayers.enable(17);
      if (parameters.alphaHash)
        _programLayers.enable(18);
      if (parameters.batching)
        _programLayers.enable(19);
      array.push(_programLayers.mask);
      _programLayers.disableAll();
      if (parameters.fog)
        _programLayers.enable(0);
      if (parameters.useFog)
        _programLayers.enable(1);
      if (parameters.flatShading)
        _programLayers.enable(2);
      if (parameters.logarithmicDepthBuffer)
        _programLayers.enable(3);
      if (parameters.skinning)
        _programLayers.enable(4);
      if (parameters.morphTargets)
        _programLayers.enable(5);
      if (parameters.morphNormals)
        _programLayers.enable(6);
      if (parameters.morphColors)
        _programLayers.enable(7);
      if (parameters.premultipliedAlpha)
        _programLayers.enable(8);
      if (parameters.shadowMapEnabled)
        _programLayers.enable(9);
      if (parameters.useLegacyLights)
        _programLayers.enable(10);
      if (parameters.doubleSided)
        _programLayers.enable(11);
      if (parameters.flipSided)
        _programLayers.enable(12);
      if (parameters.useDepthPacking)
        _programLayers.enable(13);
      if (parameters.dithering)
        _programLayers.enable(14);
      if (parameters.transmission)
        _programLayers.enable(15);
      if (parameters.sheen)
        _programLayers.enable(16);
      if (parameters.opaque)
        _programLayers.enable(17);
      if (parameters.pointsUvs)
        _programLayers.enable(18);
      if (parameters.decodeVideoTexture)
        _programLayers.enable(19);
      array.push(_programLayers.mask);
    }
    function getUniforms(material) {
      const shaderID = shaderIDs[material.type];
      let uniforms;
      if (shaderID) {
        const shader = ShaderLib[shaderID];
        uniforms = UniformsUtils.clone(shader.uniforms);
      } else {
        uniforms = material.uniforms;
      }
      return uniforms;
    }
    function acquireProgram(parameters, cacheKey) {
      let program;
      for (let p = 0, pl = programs.length; p < pl; p++) {
        const preexistingProgram = programs[p];
        if (preexistingProgram.cacheKey === cacheKey) {
          program = preexistingProgram;
          ++program.usedTimes;
          break;
        }
      }
      if (program === void 0) {
        program = new WebGLProgram(renderer, cacheKey, parameters, bindingStates);
        programs.push(program);
      }
      return program;
    }
    function releaseProgram(program) {
      if (--program.usedTimes === 0) {
        const i = programs.indexOf(program);
        programs[i] = programs[programs.length - 1];
        programs.pop();
        program.destroy();
      }
    }
    function releaseShaderCache(material) {
      _customShaders.remove(material);
    }
    function dispose() {
      _customShaders.dispose();
    }
    return {
      getParameters,
      getProgramCacheKey,
      getUniforms,
      acquireProgram,
      releaseProgram,
      releaseShaderCache,
      // Exposed for resource monitoring & error feedback via renderer.info:
      programs,
      dispose
    };
  }
  function WebGLProperties() {
    let properties = /* @__PURE__ */ new WeakMap();
    function get(object) {
      let map = properties.get(object);
      if (map === void 0) {
        map = {};
        properties.set(object, map);
      }
      return map;
    }
    function remove(object) {
      properties.delete(object);
    }
    function update(object, key, value) {
      properties.get(object)[key] = value;
    }
    function dispose() {
      properties = /* @__PURE__ */ new WeakMap();
    }
    return {
      get,
      remove,
      update,
      dispose
    };
  }
  function painterSortStable(a, b) {
    if (a.groupOrder !== b.groupOrder) {
      return a.groupOrder - b.groupOrder;
    } else if (a.renderOrder !== b.renderOrder) {
      return a.renderOrder - b.renderOrder;
    } else if (a.material.id !== b.material.id) {
      return a.material.id - b.material.id;
    } else if (a.z !== b.z) {
      return a.z - b.z;
    } else {
      return a.id - b.id;
    }
  }
  function reversePainterSortStable(a, b) {
    if (a.groupOrder !== b.groupOrder) {
      return a.groupOrder - b.groupOrder;
    } else if (a.renderOrder !== b.renderOrder) {
      return a.renderOrder - b.renderOrder;
    } else if (a.z !== b.z) {
      return b.z - a.z;
    } else {
      return a.id - b.id;
    }
  }
  function WebGLRenderList() {
    const renderItems = [];
    let renderItemsIndex = 0;
    const opaque = [];
    const transmissive = [];
    const transparent = [];
    function init() {
      renderItemsIndex = 0;
      opaque.length = 0;
      transmissive.length = 0;
      transparent.length = 0;
    }
    function getNextRenderItem(object, geometry, material, groupOrder, z, group) {
      let renderItem = renderItems[renderItemsIndex];
      if (renderItem === void 0) {
        renderItem = {
          id: object.id,
          object,
          geometry,
          material,
          groupOrder,
          renderOrder: object.renderOrder,
          z,
          group
        };
        renderItems[renderItemsIndex] = renderItem;
      } else {
        renderItem.id = object.id;
        renderItem.object = object;
        renderItem.geometry = geometry;
        renderItem.material = material;
        renderItem.groupOrder = groupOrder;
        renderItem.renderOrder = object.renderOrder;
        renderItem.z = z;
        renderItem.group = group;
      }
      renderItemsIndex++;
      return renderItem;
    }
    function push(object, geometry, material, groupOrder, z, group) {
      const renderItem = getNextRenderItem(object, geometry, material, groupOrder, z, group);
      if (material.transmission > 0) {
        transmissive.push(renderItem);
      } else if (material.transparent === true) {
        transparent.push(renderItem);
      } else {
        opaque.push(renderItem);
      }
    }
    function unshift(object, geometry, material, groupOrder, z, group) {
      const renderItem = getNextRenderItem(object, geometry, material, groupOrder, z, group);
      if (material.transmission > 0) {
        transmissive.unshift(renderItem);
      } else if (material.transparent === true) {
        transparent.unshift(renderItem);
      } else {
        opaque.unshift(renderItem);
      }
    }
    function sort(customOpaqueSort, customTransparentSort) {
      if (opaque.length > 1) opaque.sort(customOpaqueSort || painterSortStable);
      if (transmissive.length > 1) transmissive.sort(customTransparentSort || reversePainterSortStable);
      if (transparent.length > 1) transparent.sort(customTransparentSort || reversePainterSortStable);
    }
    function finish() {
      for (let i = renderItemsIndex, il = renderItems.length; i < il; i++) {
        const renderItem = renderItems[i];
        if (renderItem.id === null) break;
        renderItem.id = null;
        renderItem.object = null;
        renderItem.geometry = null;
        renderItem.material = null;
        renderItem.group = null;
      }
    }
    return {
      opaque,
      transmissive,
      transparent,
      init,
      push,
      unshift,
      finish,
      sort
    };
  }
  function WebGLRenderLists() {
    let lists = /* @__PURE__ */ new WeakMap();
    function get(scene, renderCallDepth) {
      const listArray = lists.get(scene);
      let list;
      if (listArray === void 0) {
        list = new WebGLRenderList();
        lists.set(scene, [list]);
      } else {
        if (renderCallDepth >= listArray.length) {
          list = new WebGLRenderList();
          listArray.push(list);
        } else {
          list = listArray[renderCallDepth];
        }
      }
      return list;
    }
    function dispose() {
      lists = /* @__PURE__ */ new WeakMap();
    }
    return {
      get,
      dispose
    };
  }
  function UniformsCache() {
    const lights = {};
    return {
      get: function(light) {
        if (lights[light.id] !== void 0) {
          return lights[light.id];
        }
        let uniforms;
        switch (light.type) {
          case "DirectionalLight":
            uniforms = {
              direction: new Vector3(),
              color: new Color()
            };
            break;
          case "SpotLight":
            uniforms = {
              position: new Vector3(),
              direction: new Vector3(),
              color: new Color(),
              distance: 0,
              coneCos: 0,
              penumbraCos: 0,
              decay: 0
            };
            break;
          case "PointLight":
            uniforms = {
              position: new Vector3(),
              color: new Color(),
              distance: 0,
              decay: 0
            };
            break;
          case "HemisphereLight":
            uniforms = {
              direction: new Vector3(),
              skyColor: new Color(),
              groundColor: new Color()
            };
            break;
          case "RectAreaLight":
            uniforms = {
              color: new Color(),
              position: new Vector3(),
              halfWidth: new Vector3(),
              halfHeight: new Vector3()
            };
            break;
        }
        lights[light.id] = uniforms;
        return uniforms;
      }
    };
  }
  function ShadowUniformsCache() {
    const lights = {};
    return {
      get: function(light) {
        if (lights[light.id] !== void 0) {
          return lights[light.id];
        }
        let uniforms;
        switch (light.type) {
          case "DirectionalLight":
            uniforms = {
              shadowBias: 0,
              shadowNormalBias: 0,
              shadowRadius: 1,
              shadowMapSize: new Vector2()
            };
            break;
          case "SpotLight":
            uniforms = {
              shadowBias: 0,
              shadowNormalBias: 0,
              shadowRadius: 1,
              shadowMapSize: new Vector2()
            };
            break;
          case "PointLight":
            uniforms = {
              shadowBias: 0,
              shadowNormalBias: 0,
              shadowRadius: 1,
              shadowMapSize: new Vector2(),
              shadowCameraNear: 1,
              shadowCameraFar: 1e3
            };
            break;
        }
        lights[light.id] = uniforms;
        return uniforms;
      }
    };
  }
  var nextVersion = 0;
  function shadowCastingAndTexturingLightsFirst(lightA, lightB) {
    return (lightB.castShadow ? 2 : 0) - (lightA.castShadow ? 2 : 0) + (lightB.map ? 1 : 0) - (lightA.map ? 1 : 0);
  }
  function WebGLLights(extensions, capabilities) {
    const cache = new UniformsCache();
    const shadowCache = ShadowUniformsCache();
    const state = {
      version: 0,
      hash: {
        directionalLength: -1,
        pointLength: -1,
        spotLength: -1,
        rectAreaLength: -1,
        hemiLength: -1,
        numDirectionalShadows: -1,
        numPointShadows: -1,
        numSpotShadows: -1,
        numSpotMaps: -1,
        numLightProbes: -1
      },
      ambient: [0, 0, 0],
      probe: [],
      directional: [],
      directionalShadow: [],
      directionalShadowMap: [],
      directionalShadowMatrix: [],
      spot: [],
      spotLightMap: [],
      spotShadow: [],
      spotShadowMap: [],
      spotLightMatrix: [],
      rectArea: [],
      rectAreaLTC1: null,
      rectAreaLTC2: null,
      point: [],
      pointShadow: [],
      pointShadowMap: [],
      pointShadowMatrix: [],
      hemi: [],
      numSpotLightShadowsWithMaps: 0,
      numLightProbes: 0
    };
    for (let i = 0; i < 9; i++) state.probe.push(new Vector3());
    const vector3 = new Vector3();
    const matrix4 = new Matrix4();
    const matrix42 = new Matrix4();
    function setup(lights, useLegacyLights) {
      let r = 0, g = 0, b = 0;
      for (let i = 0; i < 9; i++) state.probe[i].set(0, 0, 0);
      let directionalLength = 0;
      let pointLength = 0;
      let spotLength = 0;
      let rectAreaLength = 0;
      let hemiLength = 0;
      let numDirectionalShadows = 0;
      let numPointShadows = 0;
      let numSpotShadows = 0;
      let numSpotMaps = 0;
      let numSpotShadowsWithMaps = 0;
      let numLightProbes = 0;
      lights.sort(shadowCastingAndTexturingLightsFirst);
      const scaleFactor = useLegacyLights === true ? Math.PI : 1;
      for (let i = 0, l = lights.length; i < l; i++) {
        const light = lights[i];
        const color = light.color;
        const intensity = light.intensity;
        const distance = light.distance;
        const shadowMap = light.shadow && light.shadow.map ? light.shadow.map.texture : null;
        if (light.isAmbientLight) {
          r += color.r * intensity * scaleFactor;
          g += color.g * intensity * scaleFactor;
          b += color.b * intensity * scaleFactor;
        } else if (light.isLightProbe) {
          for (let j = 0; j < 9; j++) {
            state.probe[j].addScaledVector(light.sh.coefficients[j], intensity);
          }
          numLightProbes++;
        } else if (light.isDirectionalLight) {
          const uniforms = cache.get(light);
          uniforms.color.copy(light.color).multiplyScalar(light.intensity * scaleFactor);
          if (light.castShadow) {
            const shadow = light.shadow;
            const shadowUniforms = shadowCache.get(light);
            shadowUniforms.shadowBias = shadow.bias;
            shadowUniforms.shadowNormalBias = shadow.normalBias;
            shadowUniforms.shadowRadius = shadow.radius;
            shadowUniforms.shadowMapSize = shadow.mapSize;
            state.directionalShadow[directionalLength] = shadowUniforms;
            state.directionalShadowMap[directionalLength] = shadowMap;
            state.directionalShadowMatrix[directionalLength] = light.shadow.matrix;
            numDirectionalShadows++;
          }
          state.directional[directionalLength] = uniforms;
          directionalLength++;
        } else if (light.isSpotLight) {
          const uniforms = cache.get(light);
          uniforms.position.setFromMatrixPosition(light.matrixWorld);
          uniforms.color.copy(color).multiplyScalar(intensity * scaleFactor);
          uniforms.distance = distance;
          uniforms.coneCos = Math.cos(light.angle);
          uniforms.penumbraCos = Math.cos(light.angle * (1 - light.penumbra));
          uniforms.decay = light.decay;
          state.spot[spotLength] = uniforms;
          const shadow = light.shadow;
          if (light.map) {
            state.spotLightMap[numSpotMaps] = light.map;
            numSpotMaps++;
            shadow.updateMatrices(light);
            if (light.castShadow) numSpotShadowsWithMaps++;
          }
          state.spotLightMatrix[spotLength] = shadow.matrix;
          if (light.castShadow) {
            const shadowUniforms = shadowCache.get(light);
            shadowUniforms.shadowBias = shadow.bias;
            shadowUniforms.shadowNormalBias = shadow.normalBias;
            shadowUniforms.shadowRadius = shadow.radius;
            shadowUniforms.shadowMapSize = shadow.mapSize;
            state.spotShadow[spotLength] = shadowUniforms;
            state.spotShadowMap[spotLength] = shadowMap;
            numSpotShadows++;
          }
          spotLength++;
        } else if (light.isRectAreaLight) {
          const uniforms = cache.get(light);
          uniforms.color.copy(color).multiplyScalar(intensity);
          uniforms.halfWidth.set(light.width * 0.5, 0, 0);
          uniforms.halfHeight.set(0, light.height * 0.5, 0);
          state.rectArea[rectAreaLength] = uniforms;
          rectAreaLength++;
        } else if (light.isPointLight) {
          const uniforms = cache.get(light);
          uniforms.color.copy(light.color).multiplyScalar(light.intensity * scaleFactor);
          uniforms.distance = light.distance;
          uniforms.decay = light.decay;
          if (light.castShadow) {
            const shadow = light.shadow;
            const shadowUniforms = shadowCache.get(light);
            shadowUniforms.shadowBias = shadow.bias;
            shadowUniforms.shadowNormalBias = shadow.normalBias;
            shadowUniforms.shadowRadius = shadow.radius;
            shadowUniforms.shadowMapSize = shadow.mapSize;
            shadowUniforms.shadowCameraNear = shadow.camera.near;
            shadowUniforms.shadowCameraFar = shadow.camera.far;
            state.pointShadow[pointLength] = shadowUniforms;
            state.pointShadowMap[pointLength] = shadowMap;
            state.pointShadowMatrix[pointLength] = light.shadow.matrix;
            numPointShadows++;
          }
          state.point[pointLength] = uniforms;
          pointLength++;
        } else if (light.isHemisphereLight) {
          const uniforms = cache.get(light);
          uniforms.skyColor.copy(light.color).multiplyScalar(intensity * scaleFactor);
          uniforms.groundColor.copy(light.groundColor).multiplyScalar(intensity * scaleFactor);
          state.hemi[hemiLength] = uniforms;
          hemiLength++;
        }
      }
      if (rectAreaLength > 0) {
        if (capabilities.isWebGL2) {
          if (extensions.has("OES_texture_float_linear") === true) {
            state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
            state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;
          } else {
            state.rectAreaLTC1 = UniformsLib.LTC_HALF_1;
            state.rectAreaLTC2 = UniformsLib.LTC_HALF_2;
          }
        } else {
          if (extensions.has("OES_texture_float_linear") === true) {
            state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
            state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;
          } else if (extensions.has("OES_texture_half_float_linear") === true) {
            state.rectAreaLTC1 = UniformsLib.LTC_HALF_1;
            state.rectAreaLTC2 = UniformsLib.LTC_HALF_2;
          } else {
            console.error("THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.");
          }
        }
      }
      state.ambient[0] = r;
      state.ambient[1] = g;
      state.ambient[2] = b;
      const hash = state.hash;
      if (hash.directionalLength !== directionalLength || hash.pointLength !== pointLength || hash.spotLength !== spotLength || hash.rectAreaLength !== rectAreaLength || hash.hemiLength !== hemiLength || hash.numDirectionalShadows !== numDirectionalShadows || hash.numPointShadows !== numPointShadows || hash.numSpotShadows !== numSpotShadows || hash.numSpotMaps !== numSpotMaps || hash.numLightProbes !== numLightProbes) {
        state.directional.length = directionalLength;
        state.spot.length = spotLength;
        state.rectArea.length = rectAreaLength;
        state.point.length = pointLength;
        state.hemi.length = hemiLength;
        state.directionalShadow.length = numDirectionalShadows;
        state.directionalShadowMap.length = numDirectionalShadows;
        state.pointShadow.length = numPointShadows;
        state.pointShadowMap.length = numPointShadows;
        state.spotShadow.length = numSpotShadows;
        state.spotShadowMap.length = numSpotShadows;
        state.directionalShadowMatrix.length = numDirectionalShadows;
        state.pointShadowMatrix.length = numPointShadows;
        state.spotLightMatrix.length = numSpotShadows + numSpotMaps - numSpotShadowsWithMaps;
        state.spotLightMap.length = numSpotMaps;
        state.numSpotLightShadowsWithMaps = numSpotShadowsWithMaps;
        state.numLightProbes = numLightProbes;
        hash.directionalLength = directionalLength;
        hash.pointLength = pointLength;
        hash.spotLength = spotLength;
        hash.rectAreaLength = rectAreaLength;
        hash.hemiLength = hemiLength;
        hash.numDirectionalShadows = numDirectionalShadows;
        hash.numPointShadows = numPointShadows;
        hash.numSpotShadows = numSpotShadows;
        hash.numSpotMaps = numSpotMaps;
        hash.numLightProbes = numLightProbes;
        state.version = nextVersion++;
      }
    }
    function setupView(lights, camera) {
      let directionalLength = 0;
      let pointLength = 0;
      let spotLength = 0;
      let rectAreaLength = 0;
      let hemiLength = 0;
      const viewMatrix = camera.matrixWorldInverse;
      for (let i = 0, l = lights.length; i < l; i++) {
        const light = lights[i];
        if (light.isDirectionalLight) {
          const uniforms = state.directional[directionalLength];
          uniforms.direction.setFromMatrixPosition(light.matrixWorld);
          vector3.setFromMatrixPosition(light.target.matrixWorld);
          uniforms.direction.sub(vector3);
          uniforms.direction.transformDirection(viewMatrix);
          directionalLength++;
        } else if (light.isSpotLight) {
          const uniforms = state.spot[spotLength];
          uniforms.position.setFromMatrixPosition(light.matrixWorld);
          uniforms.position.applyMatrix4(viewMatrix);
          uniforms.direction.setFromMatrixPosition(light.matrixWorld);
          vector3.setFromMatrixPosition(light.target.matrixWorld);
          uniforms.direction.sub(vector3);
          uniforms.direction.transformDirection(viewMatrix);
          spotLength++;
        } else if (light.isRectAreaLight) {
          const uniforms = state.rectArea[rectAreaLength];
          uniforms.position.setFromMatrixPosition(light.matrixWorld);
          uniforms.position.applyMatrix4(viewMatrix);
          matrix42.identity();
          matrix4.copy(light.matrixWorld);
          matrix4.premultiply(viewMatrix);
          matrix42.extractRotation(matrix4);
          uniforms.halfWidth.set(light.width * 0.5, 0, 0);
          uniforms.halfHeight.set(0, light.height * 0.5, 0);
          uniforms.halfWidth.applyMatrix4(matrix42);
          uniforms.halfHeight.applyMatrix4(matrix42);
          rectAreaLength++;
        } else if (light.isPointLight) {
          const uniforms = state.point[pointLength];
          uniforms.position.setFromMatrixPosition(light.matrixWorld);
          uniforms.position.applyMatrix4(viewMatrix);
          pointLength++;
        } else if (light.isHemisphereLight) {
          const uniforms = state.hemi[hemiLength];
          uniforms.direction.setFromMatrixPosition(light.matrixWorld);
          uniforms.direction.transformDirection(viewMatrix);
          hemiLength++;
        }
      }
    }
    return {
      setup,
      setupView,
      state
    };
  }
  function WebGLRenderState(extensions, capabilities) {
    const lights = new WebGLLights(extensions, capabilities);
    const lightsArray = [];
    const shadowsArray = [];
    function init() {
      lightsArray.length = 0;
      shadowsArray.length = 0;
    }
    function pushLight(light) {
      lightsArray.push(light);
    }
    function pushShadow(shadowLight) {
      shadowsArray.push(shadowLight);
    }
    function setupLights(useLegacyLights) {
      lights.setup(lightsArray, useLegacyLights);
    }
    function setupLightsView(camera) {
      lights.setupView(lightsArray, camera);
    }
    const state = {
      lightsArray,
      shadowsArray,
      lights
    };
    return {
      init,
      state,
      setupLights,
      setupLightsView,
      pushLight,
      pushShadow
    };
  }
  function WebGLRenderStates(extensions, capabilities) {
    let renderStates = /* @__PURE__ */ new WeakMap();
    function get(scene, renderCallDepth = 0) {
      const renderStateArray = renderStates.get(scene);
      let renderState;
      if (renderStateArray === void 0) {
        renderState = new WebGLRenderState(extensions, capabilities);
        renderStates.set(scene, [renderState]);
      } else {
        if (renderCallDepth >= renderStateArray.length) {
          renderState = new WebGLRenderState(extensions, capabilities);
          renderStateArray.push(renderState);
        } else {
          renderState = renderStateArray[renderCallDepth];
        }
      }
      return renderState;
    }
    function dispose() {
      renderStates = /* @__PURE__ */ new WeakMap();
    }
    return {
      get,
      dispose
    };
  }
  var MeshDepthMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isMeshDepthMaterial = true;
      this.type = "MeshDepthMaterial";
      this.depthPacking = BasicDepthPacking;
      this.map = null;
      this.alphaMap = null;
      this.displacementMap = null;
      this.displacementScale = 1;
      this.displacementBias = 0;
      this.wireframe = false;
      this.wireframeLinewidth = 1;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.depthPacking = source.depthPacking;
      this.map = source.map;
      this.alphaMap = source.alphaMap;
      this.displacementMap = source.displacementMap;
      this.displacementScale = source.displacementScale;
      this.displacementBias = source.displacementBias;
      this.wireframe = source.wireframe;
      this.wireframeLinewidth = source.wireframeLinewidth;
      return this;
    }
  };
  var MeshDistanceMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isMeshDistanceMaterial = true;
      this.type = "MeshDistanceMaterial";
      this.map = null;
      this.alphaMap = null;
      this.displacementMap = null;
      this.displacementScale = 1;
      this.displacementBias = 0;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.map = source.map;
      this.alphaMap = source.alphaMap;
      this.displacementMap = source.displacementMap;
      this.displacementScale = source.displacementScale;
      this.displacementBias = source.displacementBias;
      return this;
    }
  };
  var vertex = "void main() {\n	gl_Position = vec4( position, 1.0 );\n}";
  var fragment = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n	const float samples = float( VSM_SAMPLES );\n	float mean = 0.0;\n	float squared_mean = 0.0;\n	float uvStride = samples <= 1.0 ? 0.0 : 2.0 / ( samples - 1.0 );\n	float uvStart = samples <= 1.0 ? 0.0 : - 1.0;\n	for ( float i = 0.0; i < samples; i ++ ) {\n		float uvOffset = uvStart + i * uvStride;\n		#ifdef HORIZONTAL_PASS\n			vec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( uvOffset, 0.0 ) * radius ) / resolution ) );\n			mean += distribution.x;\n			squared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n		#else\n			float depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, uvOffset ) * radius ) / resolution ) );\n			mean += depth;\n			squared_mean += depth * depth;\n		#endif\n	}\n	mean = mean / samples;\n	squared_mean = squared_mean / samples;\n	float std_dev = sqrt( squared_mean - mean * mean );\n	gl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";
  function WebGLShadowMap(_renderer2, _objects, _capabilities) {
    let _frustum2 = new Frustum();
    const _shadowMapSize = new Vector2(), _viewportSize = new Vector2(), _viewport = new Vector4(), _depthMaterial = new MeshDepthMaterial({ depthPacking: RGBADepthPacking }), _distanceMaterial = new MeshDistanceMaterial(), _materialCache = {}, _maxTextureSize = _capabilities.maxTextureSize;
    const shadowSide = { [FrontSide]: BackSide, [BackSide]: FrontSide, [DoubleSide]: DoubleSide };
    const shadowMaterialVertical = new ShaderMaterial({
      defines: {
        VSM_SAMPLES: 8
      },
      uniforms: {
        shadow_pass: { value: null },
        resolution: { value: new Vector2() },
        radius: { value: 4 }
      },
      vertexShader: vertex,
      fragmentShader: fragment
    });
    const shadowMaterialHorizontal = shadowMaterialVertical.clone();
    shadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;
    const fullScreenTri = new BufferGeometry();
    fullScreenTri.setAttribute(
      "position",
      new BufferAttribute(
        new Float32Array([-1, -1, 0.5, 3, -1, 0.5, -1, 3, 0.5]),
        3
      )
    );
    const fullScreenMesh = new Mesh(fullScreenTri, shadowMaterialVertical);
    const scope = this;
    this.enabled = false;
    this.autoUpdate = true;
    this.needsUpdate = false;
    this.type = PCFShadowMap;
    let _previousType = this.type;
    this.render = function(lights, scene, camera) {
      if (scope.enabled === false) return;
      if (scope.autoUpdate === false && scope.needsUpdate === false) return;
      if (lights.length === 0) return;
      const currentRenderTarget = _renderer2.getRenderTarget();
      const activeCubeFace = _renderer2.getActiveCubeFace();
      const activeMipmapLevel = _renderer2.getActiveMipmapLevel();
      const _state = _renderer2.state;
      _state.setBlending(NoBlending);
      _state.buffers.color.setClear(1, 1, 1, 1);
      _state.buffers.depth.setTest(true);
      _state.setScissorTest(false);
      const toVSM = _previousType !== VSMShadowMap && this.type === VSMShadowMap;
      const fromVSM = _previousType === VSMShadowMap && this.type !== VSMShadowMap;
      for (let i = 0, il = lights.length; i < il; i++) {
        const light = lights[i];
        const shadow = light.shadow;
        if (shadow === void 0) {
          console.warn("THREE.WebGLShadowMap:", light, "has no shadow.");
          continue;
        }
        if (shadow.autoUpdate === false && shadow.needsUpdate === false) continue;
        _shadowMapSize.copy(shadow.mapSize);
        const shadowFrameExtents = shadow.getFrameExtents();
        _shadowMapSize.multiply(shadowFrameExtents);
        _viewportSize.copy(shadow.mapSize);
        if (_shadowMapSize.x > _maxTextureSize || _shadowMapSize.y > _maxTextureSize) {
          if (_shadowMapSize.x > _maxTextureSize) {
            _viewportSize.x = Math.floor(_maxTextureSize / shadowFrameExtents.x);
            _shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
            shadow.mapSize.x = _viewportSize.x;
          }
          if (_shadowMapSize.y > _maxTextureSize) {
            _viewportSize.y = Math.floor(_maxTextureSize / shadowFrameExtents.y);
            _shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
            shadow.mapSize.y = _viewportSize.y;
          }
        }
        if (shadow.map === null || toVSM === true || fromVSM === true) {
          const pars = this.type !== VSMShadowMap ? { minFilter: NearestFilter, magFilter: NearestFilter } : {};
          if (shadow.map !== null) {
            shadow.map.dispose();
          }
          shadow.map = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, pars);
          shadow.map.texture.name = light.name + ".shadowMap";
          shadow.camera.updateProjectionMatrix();
        }
        _renderer2.setRenderTarget(shadow.map);
        _renderer2.clear();
        const viewportCount = shadow.getViewportCount();
        for (let vp = 0; vp < viewportCount; vp++) {
          const viewport = shadow.getViewport(vp);
          _viewport.set(
            _viewportSize.x * viewport.x,
            _viewportSize.y * viewport.y,
            _viewportSize.x * viewport.z,
            _viewportSize.y * viewport.w
          );
          _state.viewport(_viewport);
          shadow.updateMatrices(light, vp);
          _frustum2 = shadow.getFrustum();
          renderObject(scene, camera, shadow.camera, light, this.type);
        }
        if (shadow.isPointLightShadow !== true && this.type === VSMShadowMap) {
          VSMPass(shadow, camera);
        }
        shadow.needsUpdate = false;
      }
      _previousType = this.type;
      scope.needsUpdate = false;
      _renderer2.setRenderTarget(currentRenderTarget, activeCubeFace, activeMipmapLevel);
    };
    function VSMPass(shadow, camera) {
      const geometry = _objects.update(fullScreenMesh);
      if (shadowMaterialVertical.defines.VSM_SAMPLES !== shadow.blurSamples) {
        shadowMaterialVertical.defines.VSM_SAMPLES = shadow.blurSamples;
        shadowMaterialHorizontal.defines.VSM_SAMPLES = shadow.blurSamples;
        shadowMaterialVertical.needsUpdate = true;
        shadowMaterialHorizontal.needsUpdate = true;
      }
      if (shadow.mapPass === null) {
        shadow.mapPass = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y);
      }
      shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
      shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
      shadowMaterialVertical.uniforms.radius.value = shadow.radius;
      _renderer2.setRenderTarget(shadow.mapPass);
      _renderer2.clear();
      _renderer2.renderBufferDirect(camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null);
      shadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;
      shadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;
      shadowMaterialHorizontal.uniforms.radius.value = shadow.radius;
      _renderer2.setRenderTarget(shadow.map);
      _renderer2.clear();
      _renderer2.renderBufferDirect(camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null);
    }
    function getDepthMaterial(object, material, light, type) {
      let result = null;
      const customMaterial = light.isPointLight === true ? object.customDistanceMaterial : object.customDepthMaterial;
      if (customMaterial !== void 0) {
        result = customMaterial;
      } else {
        result = light.isPointLight === true ? _distanceMaterial : _depthMaterial;
        if (_renderer2.localClippingEnabled && material.clipShadows === true && Array.isArray(material.clippingPlanes) && material.clippingPlanes.length !== 0 || material.displacementMap && material.displacementScale !== 0 || material.alphaMap && material.alphaTest > 0 || material.map && material.alphaTest > 0) {
          const keyA = result.uuid, keyB = material.uuid;
          let materialsForVariant = _materialCache[keyA];
          if (materialsForVariant === void 0) {
            materialsForVariant = {};
            _materialCache[keyA] = materialsForVariant;
          }
          let cachedMaterial = materialsForVariant[keyB];
          if (cachedMaterial === void 0) {
            cachedMaterial = result.clone();
            materialsForVariant[keyB] = cachedMaterial;
            material.addEventListener("dispose", onMaterialDispose);
          }
          result = cachedMaterial;
        }
      }
      result.visible = material.visible;
      result.wireframe = material.wireframe;
      if (type === VSMShadowMap) {
        result.side = material.shadowSide !== null ? material.shadowSide : material.side;
      } else {
        result.side = material.shadowSide !== null ? material.shadowSide : shadowSide[material.side];
      }
      result.alphaMap = material.alphaMap;
      result.alphaTest = material.alphaTest;
      result.map = material.map;
      result.clipShadows = material.clipShadows;
      result.clippingPlanes = material.clippingPlanes;
      result.clipIntersection = material.clipIntersection;
      result.displacementMap = material.displacementMap;
      result.displacementScale = material.displacementScale;
      result.displacementBias = material.displacementBias;
      result.wireframeLinewidth = material.wireframeLinewidth;
      result.linewidth = material.linewidth;
      if (light.isPointLight === true && result.isMeshDistanceMaterial === true) {
        const materialProperties = _renderer2.properties.get(result);
        materialProperties.light = light;
      }
      return result;
    }
    function renderObject(object, camera, shadowCamera, light, type) {
      if (object.visible === false) return;
      const visible = object.layers.test(camera.layers);
      if (visible && (object.isMesh || object.isLine || object.isPoints)) {
        if ((object.castShadow || object.receiveShadow && type === VSMShadowMap) && (!object.frustumCulled || _frustum2.intersectsObject(object))) {
          object.modelViewMatrix.multiplyMatrices(shadowCamera.matrixWorldInverse, object.matrixWorld);
          const geometry = _objects.update(object);
          const material = object.material;
          if (Array.isArray(material)) {
            const groups = geometry.groups;
            for (let k = 0, kl = groups.length; k < kl; k++) {
              const group = groups[k];
              const groupMaterial = material[group.materialIndex];
              if (groupMaterial && groupMaterial.visible) {
                const depthMaterial = getDepthMaterial(object, groupMaterial, light, type);
                object.onBeforeShadow(_renderer2, object, camera, shadowCamera, geometry, depthMaterial, group);
                _renderer2.renderBufferDirect(shadowCamera, null, geometry, depthMaterial, object, group);
                object.onAfterShadow(_renderer2, object, camera, shadowCamera, geometry, depthMaterial, group);
              }
            }
          } else if (material.visible) {
            const depthMaterial = getDepthMaterial(object, material, light, type);
            object.onBeforeShadow(_renderer2, object, camera, shadowCamera, geometry, depthMaterial, null);
            _renderer2.renderBufferDirect(shadowCamera, null, geometry, depthMaterial, object, null);
            object.onAfterShadow(_renderer2, object, camera, shadowCamera, geometry, depthMaterial, null);
          }
        }
      }
      const children = object.children;
      for (let i = 0, l = children.length; i < l; i++) {
        renderObject(children[i], camera, shadowCamera, light, type);
      }
    }
    function onMaterialDispose(event) {
      const material = event.target;
      material.removeEventListener("dispose", onMaterialDispose);
      for (const id in _materialCache) {
        const cache = _materialCache[id];
        const uuid = event.target.uuid;
        if (uuid in cache) {
          const shadowMaterial = cache[uuid];
          shadowMaterial.dispose();
          delete cache[uuid];
        }
      }
    }
  }
  function WebGLState(gl, extensions, capabilities) {
    const isWebGL2 = capabilities.isWebGL2;
    function ColorBuffer() {
      let locked = false;
      const color = new Vector4();
      let currentColorMask = null;
      const currentColorClear = new Vector4(0, 0, 0, 0);
      return {
        setMask: function(colorMask) {
          if (currentColorMask !== colorMask && !locked) {
            gl.colorMask(colorMask, colorMask, colorMask, colorMask);
            currentColorMask = colorMask;
          }
        },
        setLocked: function(lock) {
          locked = lock;
        },
        setClear: function(r, g, b, a, premultipliedAlpha) {
          if (premultipliedAlpha === true) {
            r *= a;
            g *= a;
            b *= a;
          }
          color.set(r, g, b, a);
          if (currentColorClear.equals(color) === false) {
            gl.clearColor(r, g, b, a);
            currentColorClear.copy(color);
          }
        },
        reset: function() {
          locked = false;
          currentColorMask = null;
          currentColorClear.set(-1, 0, 0, 0);
        }
      };
    }
    function DepthBuffer() {
      let locked = false;
      let currentDepthMask = null;
      let currentDepthFunc = null;
      let currentDepthClear = null;
      return {
        setTest: function(depthTest) {
          if (depthTest) {
            enable(gl.DEPTH_TEST);
          } else {
            disable(gl.DEPTH_TEST);
          }
        },
        setMask: function(depthMask) {
          if (currentDepthMask !== depthMask && !locked) {
            gl.depthMask(depthMask);
            currentDepthMask = depthMask;
          }
        },
        setFunc: function(depthFunc) {
          if (currentDepthFunc !== depthFunc) {
            switch (depthFunc) {
              case NeverDepth:
                gl.depthFunc(gl.NEVER);
                break;
              case AlwaysDepth:
                gl.depthFunc(gl.ALWAYS);
                break;
              case LessDepth:
                gl.depthFunc(gl.LESS);
                break;
              case LessEqualDepth:
                gl.depthFunc(gl.LEQUAL);
                break;
              case EqualDepth:
                gl.depthFunc(gl.EQUAL);
                break;
              case GreaterEqualDepth:
                gl.depthFunc(gl.GEQUAL);
                break;
              case GreaterDepth:
                gl.depthFunc(gl.GREATER);
                break;
              case NotEqualDepth:
                gl.depthFunc(gl.NOTEQUAL);
                break;
              default:
                gl.depthFunc(gl.LEQUAL);
            }
            currentDepthFunc = depthFunc;
          }
        },
        setLocked: function(lock) {
          locked = lock;
        },
        setClear: function(depth) {
          if (currentDepthClear !== depth) {
            gl.clearDepth(depth);
            currentDepthClear = depth;
          }
        },
        reset: function() {
          locked = false;
          currentDepthMask = null;
          currentDepthFunc = null;
          currentDepthClear = null;
        }
      };
    }
    function StencilBuffer() {
      let locked = false;
      let currentStencilMask = null;
      let currentStencilFunc = null;
      let currentStencilRef = null;
      let currentStencilFuncMask = null;
      let currentStencilFail = null;
      let currentStencilZFail = null;
      let currentStencilZPass = null;
      let currentStencilClear = null;
      return {
        setTest: function(stencilTest) {
          if (!locked) {
            if (stencilTest) {
              enable(gl.STENCIL_TEST);
            } else {
              disable(gl.STENCIL_TEST);
            }
          }
        },
        setMask: function(stencilMask) {
          if (currentStencilMask !== stencilMask && !locked) {
            gl.stencilMask(stencilMask);
            currentStencilMask = stencilMask;
          }
        },
        setFunc: function(stencilFunc, stencilRef, stencilMask) {
          if (currentStencilFunc !== stencilFunc || currentStencilRef !== stencilRef || currentStencilFuncMask !== stencilMask) {
            gl.stencilFunc(stencilFunc, stencilRef, stencilMask);
            currentStencilFunc = stencilFunc;
            currentStencilRef = stencilRef;
            currentStencilFuncMask = stencilMask;
          }
        },
        setOp: function(stencilFail, stencilZFail, stencilZPass) {
          if (currentStencilFail !== stencilFail || currentStencilZFail !== stencilZFail || currentStencilZPass !== stencilZPass) {
            gl.stencilOp(stencilFail, stencilZFail, stencilZPass);
            currentStencilFail = stencilFail;
            currentStencilZFail = stencilZFail;
            currentStencilZPass = stencilZPass;
          }
        },
        setLocked: function(lock) {
          locked = lock;
        },
        setClear: function(stencil) {
          if (currentStencilClear !== stencil) {
            gl.clearStencil(stencil);
            currentStencilClear = stencil;
          }
        },
        reset: function() {
          locked = false;
          currentStencilMask = null;
          currentStencilFunc = null;
          currentStencilRef = null;
          currentStencilFuncMask = null;
          currentStencilFail = null;
          currentStencilZFail = null;
          currentStencilZPass = null;
          currentStencilClear = null;
        }
      };
    }
    const colorBuffer = new ColorBuffer();
    const depthBuffer = new DepthBuffer();
    const stencilBuffer = new StencilBuffer();
    const uboBindings = /* @__PURE__ */ new WeakMap();
    const uboProgramMap = /* @__PURE__ */ new WeakMap();
    let enabledCapabilities = {};
    let currentBoundFramebuffers = {};
    let currentDrawbuffers = /* @__PURE__ */ new WeakMap();
    let defaultDrawbuffers = [];
    let currentProgram = null;
    let currentBlendingEnabled = false;
    let currentBlending = null;
    let currentBlendEquation = null;
    let currentBlendSrc = null;
    let currentBlendDst = null;
    let currentBlendEquationAlpha = null;
    let currentBlendSrcAlpha = null;
    let currentBlendDstAlpha = null;
    let currentBlendColor = new Color(0, 0, 0);
    let currentBlendAlpha = 0;
    let currentPremultipledAlpha = false;
    let currentFlipSided = null;
    let currentCullFace = null;
    let currentLineWidth = null;
    let currentPolygonOffsetFactor = null;
    let currentPolygonOffsetUnits = null;
    const maxTextures = gl.getParameter(gl.MAX_COMBINED_TEXTURE_IMAGE_UNITS);
    let lineWidthAvailable = false;
    let version = 0;
    const glVersion = gl.getParameter(gl.VERSION);
    if (glVersion.indexOf("WebGL") !== -1) {
      version = parseFloat(/^WebGL (\d)/.exec(glVersion)[1]);
      lineWidthAvailable = version >= 1;
    } else if (glVersion.indexOf("OpenGL ES") !== -1) {
      version = parseFloat(/^OpenGL ES (\d)/.exec(glVersion)[1]);
      lineWidthAvailable = version >= 2;
    }
    let currentTextureSlot = null;
    let currentBoundTextures = {};
    const scissorParam = gl.getParameter(gl.SCISSOR_BOX);
    const viewportParam = gl.getParameter(gl.VIEWPORT);
    const currentScissor = new Vector4().fromArray(scissorParam);
    const currentViewport = new Vector4().fromArray(viewportParam);
    function createTexture(type, target, count, dimensions) {
      const data = new Uint8Array(4);
      const texture = gl.createTexture();
      gl.bindTexture(type, texture);
      gl.texParameteri(type, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
      gl.texParameteri(type, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
      for (let i = 0; i < count; i++) {
        if (isWebGL2 && (type === gl.TEXTURE_3D || type === gl.TEXTURE_2D_ARRAY)) {
          gl.texImage3D(target, 0, gl.RGBA, 1, 1, dimensions, 0, gl.RGBA, gl.UNSIGNED_BYTE, data);
        } else {
          gl.texImage2D(target + i, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, data);
        }
      }
      return texture;
    }
    const emptyTextures = {};
    emptyTextures[gl.TEXTURE_2D] = createTexture(gl.TEXTURE_2D, gl.TEXTURE_2D, 1);
    emptyTextures[gl.TEXTURE_CUBE_MAP] = createTexture(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_CUBE_MAP_POSITIVE_X, 6);
    if (isWebGL2) {
      emptyTextures[gl.TEXTURE_2D_ARRAY] = createTexture(gl.TEXTURE_2D_ARRAY, gl.TEXTURE_2D_ARRAY, 1, 1);
      emptyTextures[gl.TEXTURE_3D] = createTexture(gl.TEXTURE_3D, gl.TEXTURE_3D, 1, 1);
    }
    colorBuffer.setClear(0, 0, 0, 1);
    depthBuffer.setClear(1);
    stencilBuffer.setClear(0);
    enable(gl.DEPTH_TEST);
    depthBuffer.setFunc(LessEqualDepth);
    setFlipSided(false);
    setCullFace(CullFaceBack);
    enable(gl.CULL_FACE);
    setBlending(NoBlending);
    function enable(id) {
      if (enabledCapabilities[id] !== true) {
        gl.enable(id);
        enabledCapabilities[id] = true;
      }
    }
    function disable(id) {
      if (enabledCapabilities[id] !== false) {
        gl.disable(id);
        enabledCapabilities[id] = false;
      }
    }
    function bindFramebuffer(target, framebuffer) {
      if (currentBoundFramebuffers[target] !== framebuffer) {
        gl.bindFramebuffer(target, framebuffer);
        currentBoundFramebuffers[target] = framebuffer;
        if (isWebGL2) {
          if (target === gl.DRAW_FRAMEBUFFER) {
            currentBoundFramebuffers[gl.FRAMEBUFFER] = framebuffer;
          }
          if (target === gl.FRAMEBUFFER) {
            currentBoundFramebuffers[gl.DRAW_FRAMEBUFFER] = framebuffer;
          }
        }
        return true;
      }
      return false;
    }
    function drawBuffers(renderTarget, framebuffer) {
      let drawBuffers2 = defaultDrawbuffers;
      let needsUpdate = false;
      if (renderTarget) {
        drawBuffers2 = currentDrawbuffers.get(framebuffer);
        if (drawBuffers2 === void 0) {
          drawBuffers2 = [];
          currentDrawbuffers.set(framebuffer, drawBuffers2);
        }
        if (renderTarget.isWebGLMultipleRenderTargets) {
          const textures = renderTarget.texture;
          if (drawBuffers2.length !== textures.length || drawBuffers2[0] !== gl.COLOR_ATTACHMENT0) {
            for (let i = 0, il = textures.length; i < il; i++) {
              drawBuffers2[i] = gl.COLOR_ATTACHMENT0 + i;
            }
            drawBuffers2.length = textures.length;
            needsUpdate = true;
          }
        } else {
          if (drawBuffers2[0] !== gl.COLOR_ATTACHMENT0) {
            drawBuffers2[0] = gl.COLOR_ATTACHMENT0;
            needsUpdate = true;
          }
        }
      } else {
        if (drawBuffers2[0] !== gl.BACK) {
          drawBuffers2[0] = gl.BACK;
          needsUpdate = true;
        }
      }
      if (needsUpdate) {
        if (capabilities.isWebGL2) {
          gl.drawBuffers(drawBuffers2);
        } else {
          extensions.get("WEBGL_draw_buffers").drawBuffersWEBGL(drawBuffers2);
        }
      }
    }
    function useProgram(program) {
      if (currentProgram !== program) {
        gl.useProgram(program);
        currentProgram = program;
        return true;
      }
      return false;
    }
    const equationToGL = {
      [AddEquation]: gl.FUNC_ADD,
      [SubtractEquation]: gl.FUNC_SUBTRACT,
      [ReverseSubtractEquation]: gl.FUNC_REVERSE_SUBTRACT
    };
    if (isWebGL2) {
      equationToGL[MinEquation] = gl.MIN;
      equationToGL[MaxEquation] = gl.MAX;
    } else {
      const extension = extensions.get("EXT_blend_minmax");
      if (extension !== null) {
        equationToGL[MinEquation] = extension.MIN_EXT;
        equationToGL[MaxEquation] = extension.MAX_EXT;
      }
    }
    const factorToGL = {
      [ZeroFactor]: gl.ZERO,
      [OneFactor]: gl.ONE,
      [SrcColorFactor]: gl.SRC_COLOR,
      [SrcAlphaFactor]: gl.SRC_ALPHA,
      [SrcAlphaSaturateFactor]: gl.SRC_ALPHA_SATURATE,
      [DstColorFactor]: gl.DST_COLOR,
      [DstAlphaFactor]: gl.DST_ALPHA,
      [OneMinusSrcColorFactor]: gl.ONE_MINUS_SRC_COLOR,
      [OneMinusSrcAlphaFactor]: gl.ONE_MINUS_SRC_ALPHA,
      [OneMinusDstColorFactor]: gl.ONE_MINUS_DST_COLOR,
      [OneMinusDstAlphaFactor]: gl.ONE_MINUS_DST_ALPHA,
      [ConstantColorFactor]: gl.CONSTANT_COLOR,
      [OneMinusConstantColorFactor]: gl.ONE_MINUS_CONSTANT_COLOR,
      [ConstantAlphaFactor]: gl.CONSTANT_ALPHA,
      [OneMinusConstantAlphaFactor]: gl.ONE_MINUS_CONSTANT_ALPHA
    };
    function setBlending(blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, blendColor, blendAlpha, premultipliedAlpha) {
      if (blending === NoBlending) {
        if (currentBlendingEnabled === true) {
          disable(gl.BLEND);
          currentBlendingEnabled = false;
        }
        return;
      }
      if (currentBlendingEnabled === false) {
        enable(gl.BLEND);
        currentBlendingEnabled = true;
      }
      if (blending !== CustomBlending) {
        if (blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha) {
          if (currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation) {
            gl.blendEquation(gl.FUNC_ADD);
            currentBlendEquation = AddEquation;
            currentBlendEquationAlpha = AddEquation;
          }
          if (premultipliedAlpha) {
            switch (blending) {
              case NormalBlending:
                gl.blendFuncSeparate(gl.ONE, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
                break;
              case AdditiveBlending:
                gl.blendFunc(gl.ONE, gl.ONE);
                break;
              case SubtractiveBlending:
                gl.blendFuncSeparate(gl.ZERO, gl.ONE_MINUS_SRC_COLOR, gl.ZERO, gl.ONE);
                break;
              case MultiplyBlending:
                gl.blendFuncSeparate(gl.ZERO, gl.SRC_COLOR, gl.ZERO, gl.SRC_ALPHA);
                break;
              default:
                console.error("THREE.WebGLState: Invalid blending: ", blending);
                break;
            }
          } else {
            switch (blending) {
              case NormalBlending:
                gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
                break;
              case AdditiveBlending:
                gl.blendFunc(gl.SRC_ALPHA, gl.ONE);
                break;
              case SubtractiveBlending:
                gl.blendFuncSeparate(gl.ZERO, gl.ONE_MINUS_SRC_COLOR, gl.ZERO, gl.ONE);
                break;
              case MultiplyBlending:
                gl.blendFunc(gl.ZERO, gl.SRC_COLOR);
                break;
              default:
                console.error("THREE.WebGLState: Invalid blending: ", blending);
                break;
            }
          }
          currentBlendSrc = null;
          currentBlendDst = null;
          currentBlendSrcAlpha = null;
          currentBlendDstAlpha = null;
          currentBlendColor.set(0, 0, 0);
          currentBlendAlpha = 0;
          currentBlending = blending;
          currentPremultipledAlpha = premultipliedAlpha;
        }
        return;
      }
      blendEquationAlpha = blendEquationAlpha || blendEquation;
      blendSrcAlpha = blendSrcAlpha || blendSrc;
      blendDstAlpha = blendDstAlpha || blendDst;
      if (blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha) {
        gl.blendEquationSeparate(equationToGL[blendEquation], equationToGL[blendEquationAlpha]);
        currentBlendEquation = blendEquation;
        currentBlendEquationAlpha = blendEquationAlpha;
      }
      if (blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha) {
        gl.blendFuncSeparate(factorToGL[blendSrc], factorToGL[blendDst], factorToGL[blendSrcAlpha], factorToGL[blendDstAlpha]);
        currentBlendSrc = blendSrc;
        currentBlendDst = blendDst;
        currentBlendSrcAlpha = blendSrcAlpha;
        currentBlendDstAlpha = blendDstAlpha;
      }
      if (blendColor.equals(currentBlendColor) === false || blendAlpha !== currentBlendAlpha) {
        gl.blendColor(blendColor.r, blendColor.g, blendColor.b, blendAlpha);
        currentBlendColor.copy(blendColor);
        currentBlendAlpha = blendAlpha;
      }
      currentBlending = blending;
      currentPremultipledAlpha = false;
    }
    function setMaterial(material, frontFaceCW) {
      material.side === DoubleSide ? disable(gl.CULL_FACE) : enable(gl.CULL_FACE);
      let flipSided = material.side === BackSide;
      if (frontFaceCW) flipSided = !flipSided;
      setFlipSided(flipSided);
      material.blending === NormalBlending && material.transparent === false ? setBlending(NoBlending) : setBlending(material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.blendColor, material.blendAlpha, material.premultipliedAlpha);
      depthBuffer.setFunc(material.depthFunc);
      depthBuffer.setTest(material.depthTest);
      depthBuffer.setMask(material.depthWrite);
      colorBuffer.setMask(material.colorWrite);
      const stencilWrite = material.stencilWrite;
      stencilBuffer.setTest(stencilWrite);
      if (stencilWrite) {
        stencilBuffer.setMask(material.stencilWriteMask);
        stencilBuffer.setFunc(material.stencilFunc, material.stencilRef, material.stencilFuncMask);
        stencilBuffer.setOp(material.stencilFail, material.stencilZFail, material.stencilZPass);
      }
      setPolygonOffset(material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits);
      material.alphaToCoverage === true ? enable(gl.SAMPLE_ALPHA_TO_COVERAGE) : disable(gl.SAMPLE_ALPHA_TO_COVERAGE);
    }
    function setFlipSided(flipSided) {
      if (currentFlipSided !== flipSided) {
        if (flipSided) {
          gl.frontFace(gl.CW);
        } else {
          gl.frontFace(gl.CCW);
        }
        currentFlipSided = flipSided;
      }
    }
    function setCullFace(cullFace) {
      if (cullFace !== CullFaceNone) {
        enable(gl.CULL_FACE);
        if (cullFace !== currentCullFace) {
          if (cullFace === CullFaceBack) {
            gl.cullFace(gl.BACK);
          } else if (cullFace === CullFaceFront) {
            gl.cullFace(gl.FRONT);
          } else {
            gl.cullFace(gl.FRONT_AND_BACK);
          }
        }
      } else {
        disable(gl.CULL_FACE);
      }
      currentCullFace = cullFace;
    }
    function setLineWidth(width) {
      if (width !== currentLineWidth) {
        if (lineWidthAvailable) gl.lineWidth(width);
        currentLineWidth = width;
      }
    }
    function setPolygonOffset(polygonOffset, factor, units) {
      if (polygonOffset) {
        enable(gl.POLYGON_OFFSET_FILL);
        if (currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units) {
          gl.polygonOffset(factor, units);
          currentPolygonOffsetFactor = factor;
          currentPolygonOffsetUnits = units;
        }
      } else {
        disable(gl.POLYGON_OFFSET_FILL);
      }
    }
    function setScissorTest(scissorTest) {
      if (scissorTest) {
        enable(gl.SCISSOR_TEST);
      } else {
        disable(gl.SCISSOR_TEST);
      }
    }
    function activeTexture(webglSlot) {
      if (webglSlot === void 0) webglSlot = gl.TEXTURE0 + maxTextures - 1;
      if (currentTextureSlot !== webglSlot) {
        gl.activeTexture(webglSlot);
        currentTextureSlot = webglSlot;
      }
    }
    function bindTexture(webglType, webglTexture, webglSlot) {
      if (webglSlot === void 0) {
        if (currentTextureSlot === null) {
          webglSlot = gl.TEXTURE0 + maxTextures - 1;
        } else {
          webglSlot = currentTextureSlot;
        }
      }
      let boundTexture = currentBoundTextures[webglSlot];
      if (boundTexture === void 0) {
        boundTexture = { type: void 0, texture: void 0 };
        currentBoundTextures[webglSlot] = boundTexture;
      }
      if (boundTexture.type !== webglType || boundTexture.texture !== webglTexture) {
        if (currentTextureSlot !== webglSlot) {
          gl.activeTexture(webglSlot);
          currentTextureSlot = webglSlot;
        }
        gl.bindTexture(webglType, webglTexture || emptyTextures[webglType]);
        boundTexture.type = webglType;
        boundTexture.texture = webglTexture;
      }
    }
    function unbindTexture() {
      const boundTexture = currentBoundTextures[currentTextureSlot];
      if (boundTexture !== void 0 && boundTexture.type !== void 0) {
        gl.bindTexture(boundTexture.type, null);
        boundTexture.type = void 0;
        boundTexture.texture = void 0;
      }
    }
    function compressedTexImage2D() {
      try {
        gl.compressedTexImage2D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function compressedTexImage3D() {
      try {
        gl.compressedTexImage3D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function texSubImage2D() {
      try {
        gl.texSubImage2D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function texSubImage3D() {
      try {
        gl.texSubImage3D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function compressedTexSubImage2D() {
      try {
        gl.compressedTexSubImage2D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function compressedTexSubImage3D() {
      try {
        gl.compressedTexSubImage3D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function texStorage2D() {
      try {
        gl.texStorage2D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function texStorage3D() {
      try {
        gl.texStorage3D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function texImage2D() {
      try {
        gl.texImage2D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function texImage3D() {
      try {
        gl.texImage3D.apply(gl, arguments);
      } catch (error) {
        console.error("THREE.WebGLState:", error);
      }
    }
    function scissor(scissor2) {
      if (currentScissor.equals(scissor2) === false) {
        gl.scissor(scissor2.x, scissor2.y, scissor2.z, scissor2.w);
        currentScissor.copy(scissor2);
      }
    }
    function viewport(viewport2) {
      if (currentViewport.equals(viewport2) === false) {
        gl.viewport(viewport2.x, viewport2.y, viewport2.z, viewport2.w);
        currentViewport.copy(viewport2);
      }
    }
    function updateUBOMapping(uniformsGroup, program) {
      let mapping = uboProgramMap.get(program);
      if (mapping === void 0) {
        mapping = /* @__PURE__ */ new WeakMap();
        uboProgramMap.set(program, mapping);
      }
      let blockIndex = mapping.get(uniformsGroup);
      if (blockIndex === void 0) {
        blockIndex = gl.getUniformBlockIndex(program, uniformsGroup.name);
        mapping.set(uniformsGroup, blockIndex);
      }
    }
    function uniformBlockBinding(uniformsGroup, program) {
      const mapping = uboProgramMap.get(program);
      const blockIndex = mapping.get(uniformsGroup);
      if (uboBindings.get(program) !== blockIndex) {
        gl.uniformBlockBinding(program, blockIndex, uniformsGroup.__bindingPointIndex);
        uboBindings.set(program, blockIndex);
      }
    }
    function reset() {
      gl.disable(gl.BLEND);
      gl.disable(gl.CULL_FACE);
      gl.disable(gl.DEPTH_TEST);
      gl.disable(gl.POLYGON_OFFSET_FILL);
      gl.disable(gl.SCISSOR_TEST);
      gl.disable(gl.STENCIL_TEST);
      gl.disable(gl.SAMPLE_ALPHA_TO_COVERAGE);
      gl.blendEquation(gl.FUNC_ADD);
      gl.blendFunc(gl.ONE, gl.ZERO);
      gl.blendFuncSeparate(gl.ONE, gl.ZERO, gl.ONE, gl.ZERO);
      gl.blendColor(0, 0, 0, 0);
      gl.colorMask(true, true, true, true);
      gl.clearColor(0, 0, 0, 0);
      gl.depthMask(true);
      gl.depthFunc(gl.LESS);
      gl.clearDepth(1);
      gl.stencilMask(4294967295);
      gl.stencilFunc(gl.ALWAYS, 0, 4294967295);
      gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
      gl.clearStencil(0);
      gl.cullFace(gl.BACK);
      gl.frontFace(gl.CCW);
      gl.polygonOffset(0, 0);
      gl.activeTexture(gl.TEXTURE0);
      gl.bindFramebuffer(gl.FRAMEBUFFER, null);
      if (isWebGL2 === true) {
        gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, null);
        gl.bindFramebuffer(gl.READ_FRAMEBUFFER, null);
      }
      gl.useProgram(null);
      gl.lineWidth(1);
      gl.scissor(0, 0, gl.canvas.width, gl.canvas.height);
      gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);
      enabledCapabilities = {};
      currentTextureSlot = null;
      currentBoundTextures = {};
      currentBoundFramebuffers = {};
      currentDrawbuffers = /* @__PURE__ */ new WeakMap();
      defaultDrawbuffers = [];
      currentProgram = null;
      currentBlendingEnabled = false;
      currentBlending = null;
      currentBlendEquation = null;
      currentBlendSrc = null;
      currentBlendDst = null;
      currentBlendEquationAlpha = null;
      currentBlendSrcAlpha = null;
      currentBlendDstAlpha = null;
      currentBlendColor = new Color(0, 0, 0);
      currentBlendAlpha = 0;
      currentPremultipledAlpha = false;
      currentFlipSided = null;
      currentCullFace = null;
      currentLineWidth = null;
      currentPolygonOffsetFactor = null;
      currentPolygonOffsetUnits = null;
      currentScissor.set(0, 0, gl.canvas.width, gl.canvas.height);
      currentViewport.set(0, 0, gl.canvas.width, gl.canvas.height);
      colorBuffer.reset();
      depthBuffer.reset();
      stencilBuffer.reset();
    }
    return {
      buffers: {
        color: colorBuffer,
        depth: depthBuffer,
        stencil: stencilBuffer
      },
      enable,
      disable,
      bindFramebuffer,
      drawBuffers,
      useProgram,
      setBlending,
      setMaterial,
      setFlipSided,
      setCullFace,
      setLineWidth,
      setPolygonOffset,
      setScissorTest,
      activeTexture,
      bindTexture,
      unbindTexture,
      compressedTexImage2D,
      compressedTexImage3D,
      texImage2D,
      texImage3D,
      updateUBOMapping,
      uniformBlockBinding,
      texStorage2D,
      texStorage3D,
      texSubImage2D,
      texSubImage3D,
      compressedTexSubImage2D,
      compressedTexSubImage3D,
      scissor,
      viewport,
      reset
    };
  }
  function WebGLTextures(_gl, extensions, state, properties, capabilities, utils, info) {
    const isWebGL2 = capabilities.isWebGL2;
    const multisampledRTTExt = extensions.has("WEBGL_multisampled_render_to_texture") ? extensions.get("WEBGL_multisampled_render_to_texture") : null;
    const supportsInvalidateFramebuffer = typeof navigator === "undefined" ? false : /OculusBrowser/g.test(navigator.userAgent);
    const _videoTextures = /* @__PURE__ */ new WeakMap();
    let _canvas2;
    const _sources = /* @__PURE__ */ new WeakMap();
    let useOffscreenCanvas = false;
    try {
      useOffscreenCanvas = typeof OffscreenCanvas !== "undefined" && new OffscreenCanvas(1, 1).getContext("2d") !== null;
    } catch (err) {
    }
    function createCanvas(width, height) {
      return useOffscreenCanvas ? (
        // eslint-disable-next-line compat/compat
        new OffscreenCanvas(width, height)
      ) : createElementNS("canvas");
    }
    function resizeImage(image, needsPowerOfTwo, needsNewCanvas, maxSize) {
      let scale = 1;
      if (image.width > maxSize || image.height > maxSize) {
        scale = maxSize / Math.max(image.width, image.height);
      }
      if (scale < 1 || needsPowerOfTwo === true) {
        if (typeof HTMLImageElement !== "undefined" && image instanceof HTMLImageElement || typeof HTMLCanvasElement !== "undefined" && image instanceof HTMLCanvasElement || typeof ImageBitmap !== "undefined" && image instanceof ImageBitmap) {
          const floor = needsPowerOfTwo ? floorPowerOfTwo : Math.floor;
          const width = floor(scale * image.width);
          const height = floor(scale * image.height);
          if (_canvas2 === void 0) _canvas2 = createCanvas(width, height);
          const canvas = needsNewCanvas ? createCanvas(width, height) : _canvas2;
          canvas.width = width;
          canvas.height = height;
          const context = canvas.getContext("2d");
          context.drawImage(image, 0, 0, width, height);
          console.warn("THREE.WebGLRenderer: Texture has been resized from (" + image.width + "x" + image.height + ") to (" + width + "x" + height + ").");
          return canvas;
        } else {
          if ("data" in image) {
            console.warn("THREE.WebGLRenderer: Image in DataTexture is too big (" + image.width + "x" + image.height + ").");
          }
          return image;
        }
      }
      return image;
    }
    function isPowerOfTwo$1(image) {
      return isPowerOfTwo(image.width) && isPowerOfTwo(image.height);
    }
    function textureNeedsPowerOfTwo(texture) {
      if (isWebGL2) return false;
      return texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping || texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
    }
    function textureNeedsGenerateMipmaps(texture, supportsMips) {
      return texture.generateMipmaps && supportsMips && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
    }
    function generateMipmap(target) {
      _gl.generateMipmap(target);
    }
    function getInternalFormat(internalFormatName, glFormat, glType, colorSpace, forceLinearTransfer = false) {
      if (isWebGL2 === false) return glFormat;
      if (internalFormatName !== null) {
        if (_gl[internalFormatName] !== void 0) return _gl[internalFormatName];
        console.warn("THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format '" + internalFormatName + "'");
      }
      let internalFormat = glFormat;
      if (glFormat === _gl.RED) {
        if (glType === _gl.FLOAT) internalFormat = _gl.R32F;
        if (glType === _gl.HALF_FLOAT) internalFormat = _gl.R16F;
        if (glType === _gl.UNSIGNED_BYTE) internalFormat = _gl.R8;
      }
      if (glFormat === _gl.RED_INTEGER) {
        if (glType === _gl.UNSIGNED_BYTE) internalFormat = _gl.R8UI;
        if (glType === _gl.UNSIGNED_SHORT) internalFormat = _gl.R16UI;
        if (glType === _gl.UNSIGNED_INT) internalFormat = _gl.R32UI;
        if (glType === _gl.BYTE) internalFormat = _gl.R8I;
        if (glType === _gl.SHORT) internalFormat = _gl.R16I;
        if (glType === _gl.INT) internalFormat = _gl.R32I;
      }
      if (glFormat === _gl.RG) {
        if (glType === _gl.FLOAT) internalFormat = _gl.RG32F;
        if (glType === _gl.HALF_FLOAT) internalFormat = _gl.RG16F;
        if (glType === _gl.UNSIGNED_BYTE) internalFormat = _gl.RG8;
      }
      if (glFormat === _gl.RGBA) {
        const transfer = forceLinearTransfer ? LinearTransfer : ColorManagement.getTransfer(colorSpace);
        if (glType === _gl.FLOAT) internalFormat = _gl.RGBA32F;
        if (glType === _gl.HALF_FLOAT) internalFormat = _gl.RGBA16F;
        if (glType === _gl.UNSIGNED_BYTE) internalFormat = transfer === SRGBTransfer ? _gl.SRGB8_ALPHA8 : _gl.RGBA8;
        if (glType === _gl.UNSIGNED_SHORT_4_4_4_4) internalFormat = _gl.RGBA4;
        if (glType === _gl.UNSIGNED_SHORT_5_5_5_1) internalFormat = _gl.RGB5_A1;
      }
      if (internalFormat === _gl.R16F || internalFormat === _gl.R32F || internalFormat === _gl.RG16F || internalFormat === _gl.RG32F || internalFormat === _gl.RGBA16F || internalFormat === _gl.RGBA32F) {
        extensions.get("EXT_color_buffer_float");
      }
      return internalFormat;
    }
    function getMipLevels(texture, image, supportsMips) {
      if (textureNeedsGenerateMipmaps(texture, supportsMips) === true || texture.isFramebufferTexture && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter) {
        return Math.log2(Math.max(image.width, image.height)) + 1;
      } else if (texture.mipmaps !== void 0 && texture.mipmaps.length > 0) {
        return texture.mipmaps.length;
      } else if (texture.isCompressedTexture && Array.isArray(texture.image)) {
        return image.mipmaps.length;
      } else {
        return 1;
      }
    }
    function filterFallback(f) {
      if (f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter) {
        return _gl.NEAREST;
      }
      return _gl.LINEAR;
    }
    function onTextureDispose(event) {
      const texture = event.target;
      texture.removeEventListener("dispose", onTextureDispose);
      deallocateTexture(texture);
      if (texture.isVideoTexture) {
        _videoTextures.delete(texture);
      }
    }
    function onRenderTargetDispose(event) {
      const renderTarget = event.target;
      renderTarget.removeEventListener("dispose", onRenderTargetDispose);
      deallocateRenderTarget(renderTarget);
    }
    function deallocateTexture(texture) {
      const textureProperties = properties.get(texture);
      if (textureProperties.__webglInit === void 0) return;
      const source = texture.source;
      const webglTextures = _sources.get(source);
      if (webglTextures) {
        const webglTexture = webglTextures[textureProperties.__cacheKey];
        webglTexture.usedTimes--;
        if (webglTexture.usedTimes === 0) {
          deleteTexture(texture);
        }
        if (Object.keys(webglTextures).length === 0) {
          _sources.delete(source);
        }
      }
      properties.remove(texture);
    }
    function deleteTexture(texture) {
      const textureProperties = properties.get(texture);
      _gl.deleteTexture(textureProperties.__webglTexture);
      const source = texture.source;
      const webglTextures = _sources.get(source);
      delete webglTextures[textureProperties.__cacheKey];
      info.memory.textures--;
    }
    function deallocateRenderTarget(renderTarget) {
      const texture = renderTarget.texture;
      const renderTargetProperties = properties.get(renderTarget);
      const textureProperties = properties.get(texture);
      if (textureProperties.__webglTexture !== void 0) {
        _gl.deleteTexture(textureProperties.__webglTexture);
        info.memory.textures--;
      }
      if (renderTarget.depthTexture) {
        renderTarget.depthTexture.dispose();
      }
      if (renderTarget.isWebGLCubeRenderTarget) {
        for (let i = 0; i < 6; i++) {
          if (Array.isArray(renderTargetProperties.__webglFramebuffer[i])) {
            for (let level = 0; level < renderTargetProperties.__webglFramebuffer[i].length; level++) _gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer[i][level]);
          } else {
            _gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer[i]);
          }
          if (renderTargetProperties.__webglDepthbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthbuffer[i]);
        }
      } else {
        if (Array.isArray(renderTargetProperties.__webglFramebuffer)) {
          for (let level = 0; level < renderTargetProperties.__webglFramebuffer.length; level++) _gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer[level]);
        } else {
          _gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer);
        }
        if (renderTargetProperties.__webglDepthbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthbuffer);
        if (renderTargetProperties.__webglMultisampledFramebuffer) _gl.deleteFramebuffer(renderTargetProperties.__webglMultisampledFramebuffer);
        if (renderTargetProperties.__webglColorRenderbuffer) {
          for (let i = 0; i < renderTargetProperties.__webglColorRenderbuffer.length; i++) {
            if (renderTargetProperties.__webglColorRenderbuffer[i]) _gl.deleteRenderbuffer(renderTargetProperties.__webglColorRenderbuffer[i]);
          }
        }
        if (renderTargetProperties.__webglDepthRenderbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthRenderbuffer);
      }
      if (renderTarget.isWebGLMultipleRenderTargets) {
        for (let i = 0, il = texture.length; i < il; i++) {
          const attachmentProperties = properties.get(texture[i]);
          if (attachmentProperties.__webglTexture) {
            _gl.deleteTexture(attachmentProperties.__webglTexture);
            info.memory.textures--;
          }
          properties.remove(texture[i]);
        }
      }
      properties.remove(texture);
      properties.remove(renderTarget);
    }
    let textureUnits = 0;
    function resetTextureUnits() {
      textureUnits = 0;
    }
    function allocateTextureUnit() {
      const textureUnit = textureUnits;
      if (textureUnit >= capabilities.maxTextures) {
        console.warn("THREE.WebGLTextures: Trying to use " + textureUnit + " texture units while this GPU supports only " + capabilities.maxTextures);
      }
      textureUnits += 1;
      return textureUnit;
    }
    function getTextureCacheKey(texture) {
      const array = [];
      array.push(texture.wrapS);
      array.push(texture.wrapT);
      array.push(texture.wrapR || 0);
      array.push(texture.magFilter);
      array.push(texture.minFilter);
      array.push(texture.anisotropy);
      array.push(texture.internalFormat);
      array.push(texture.format);
      array.push(texture.type);
      array.push(texture.generateMipmaps);
      array.push(texture.premultiplyAlpha);
      array.push(texture.flipY);
      array.push(texture.unpackAlignment);
      array.push(texture.colorSpace);
      return array.join();
    }
    function setTexture2D(texture, slot) {
      const textureProperties = properties.get(texture);
      if (texture.isVideoTexture) updateVideoTexture(texture);
      if (texture.isRenderTargetTexture === false && texture.version > 0 && textureProperties.__version !== texture.version) {
        const image = texture.image;
        if (image === null) {
          console.warn("THREE.WebGLRenderer: Texture marked for update but no image data found.");
        } else if (image.complete === false) {
          console.warn("THREE.WebGLRenderer: Texture marked for update but image is incomplete");
        } else {
          uploadTexture(textureProperties, texture, slot);
          return;
        }
      }
      state.bindTexture(_gl.TEXTURE_2D, textureProperties.__webglTexture, _gl.TEXTURE0 + slot);
    }
    function setTexture2DArray(texture, slot) {
      const textureProperties = properties.get(texture);
      if (texture.version > 0 && textureProperties.__version !== texture.version) {
        uploadTexture(textureProperties, texture, slot);
        return;
      }
      state.bindTexture(_gl.TEXTURE_2D_ARRAY, textureProperties.__webglTexture, _gl.TEXTURE0 + slot);
    }
    function setTexture3D(texture, slot) {
      const textureProperties = properties.get(texture);
      if (texture.version > 0 && textureProperties.__version !== texture.version) {
        uploadTexture(textureProperties, texture, slot);
        return;
      }
      state.bindTexture(_gl.TEXTURE_3D, textureProperties.__webglTexture, _gl.TEXTURE0 + slot);
    }
    function setTextureCube(texture, slot) {
      const textureProperties = properties.get(texture);
      if (texture.version > 0 && textureProperties.__version !== texture.version) {
        uploadCubeTexture(textureProperties, texture, slot);
        return;
      }
      state.bindTexture(_gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture, _gl.TEXTURE0 + slot);
    }
    const wrappingToGL = {
      [RepeatWrapping]: _gl.REPEAT,
      [ClampToEdgeWrapping]: _gl.CLAMP_TO_EDGE,
      [MirroredRepeatWrapping]: _gl.MIRRORED_REPEAT
    };
    const filterToGL = {
      [NearestFilter]: _gl.NEAREST,
      [NearestMipmapNearestFilter]: _gl.NEAREST_MIPMAP_NEAREST,
      [NearestMipmapLinearFilter]: _gl.NEAREST_MIPMAP_LINEAR,
      [LinearFilter]: _gl.LINEAR,
      [LinearMipmapNearestFilter]: _gl.LINEAR_MIPMAP_NEAREST,
      [LinearMipmapLinearFilter]: _gl.LINEAR_MIPMAP_LINEAR
    };
    const compareToGL = {
      [NeverCompare]: _gl.NEVER,
      [AlwaysCompare]: _gl.ALWAYS,
      [LessCompare]: _gl.LESS,
      [LessEqualCompare]: _gl.LEQUAL,
      [EqualCompare]: _gl.EQUAL,
      [GreaterEqualCompare]: _gl.GEQUAL,
      [GreaterCompare]: _gl.GREATER,
      [NotEqualCompare]: _gl.NOTEQUAL
    };
    function setTextureParameters(textureType, texture, supportsMips) {
      if (supportsMips) {
        _gl.texParameteri(textureType, _gl.TEXTURE_WRAP_S, wrappingToGL[texture.wrapS]);
        _gl.texParameteri(textureType, _gl.TEXTURE_WRAP_T, wrappingToGL[texture.wrapT]);
        if (textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY) {
          _gl.texParameteri(textureType, _gl.TEXTURE_WRAP_R, wrappingToGL[texture.wrapR]);
        }
        _gl.texParameteri(textureType, _gl.TEXTURE_MAG_FILTER, filterToGL[texture.magFilter]);
        _gl.texParameteri(textureType, _gl.TEXTURE_MIN_FILTER, filterToGL[texture.minFilter]);
      } else {
        _gl.texParameteri(textureType, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE);
        _gl.texParameteri(textureType, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE);
        if (textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY) {
          _gl.texParameteri(textureType, _gl.TEXTURE_WRAP_R, _gl.CLAMP_TO_EDGE);
        }
        if (texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping) {
          console.warn("THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.");
        }
        _gl.texParameteri(textureType, _gl.TEXTURE_MAG_FILTER, filterFallback(texture.magFilter));
        _gl.texParameteri(textureType, _gl.TEXTURE_MIN_FILTER, filterFallback(texture.minFilter));
        if (texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter) {
          console.warn("THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.");
        }
      }
      if (texture.compareFunction) {
        _gl.texParameteri(textureType, _gl.TEXTURE_COMPARE_MODE, _gl.COMPARE_REF_TO_TEXTURE);
        _gl.texParameteri(textureType, _gl.TEXTURE_COMPARE_FUNC, compareToGL[texture.compareFunction]);
      }
      if (extensions.has("EXT_texture_filter_anisotropic") === true) {
        const extension = extensions.get("EXT_texture_filter_anisotropic");
        if (texture.magFilter === NearestFilter) return;
        if (texture.minFilter !== NearestMipmapLinearFilter && texture.minFilter !== LinearMipmapLinearFilter) return;
        if (texture.type === FloatType && extensions.has("OES_texture_float_linear") === false) return;
        if (isWebGL2 === false && (texture.type === HalfFloatType && extensions.has("OES_texture_half_float_linear") === false)) return;
        if (texture.anisotropy > 1 || properties.get(texture).__currentAnisotropy) {
          _gl.texParameterf(textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min(texture.anisotropy, capabilities.getMaxAnisotropy()));
          properties.get(texture).__currentAnisotropy = texture.anisotropy;
        }
      }
    }
    function initTexture(textureProperties, texture) {
      let forceUpload = false;
      if (textureProperties.__webglInit === void 0) {
        textureProperties.__webglInit = true;
        texture.addEventListener("dispose", onTextureDispose);
      }
      const source = texture.source;
      let webglTextures = _sources.get(source);
      if (webglTextures === void 0) {
        webglTextures = {};
        _sources.set(source, webglTextures);
      }
      const textureCacheKey = getTextureCacheKey(texture);
      if (textureCacheKey !== textureProperties.__cacheKey) {
        if (webglTextures[textureCacheKey] === void 0) {
          webglTextures[textureCacheKey] = {
            texture: _gl.createTexture(),
            usedTimes: 0
          };
          info.memory.textures++;
          forceUpload = true;
        }
        webglTextures[textureCacheKey].usedTimes++;
        const webglTexture = webglTextures[textureProperties.__cacheKey];
        if (webglTexture !== void 0) {
          webglTextures[textureProperties.__cacheKey].usedTimes--;
          if (webglTexture.usedTimes === 0) {
            deleteTexture(texture);
          }
        }
        textureProperties.__cacheKey = textureCacheKey;
        textureProperties.__webglTexture = webglTextures[textureCacheKey].texture;
      }
      return forceUpload;
    }
    function uploadTexture(textureProperties, texture, slot) {
      let textureType = _gl.TEXTURE_2D;
      if (texture.isDataArrayTexture || texture.isCompressedArrayTexture) textureType = _gl.TEXTURE_2D_ARRAY;
      if (texture.isData3DTexture) textureType = _gl.TEXTURE_3D;
      const forceUpload = initTexture(textureProperties, texture);
      const source = texture.source;
      state.bindTexture(textureType, textureProperties.__webglTexture, _gl.TEXTURE0 + slot);
      const sourceProperties = properties.get(source);
      if (source.version !== sourceProperties.__version || forceUpload === true) {
        state.activeTexture(_gl.TEXTURE0 + slot);
        const workingPrimaries = ColorManagement.getPrimaries(ColorManagement.workingColorSpace);
        const texturePrimaries = texture.colorSpace === NoColorSpace ? null : ColorManagement.getPrimaries(texture.colorSpace);
        const unpackConversion = texture.colorSpace === NoColorSpace || workingPrimaries === texturePrimaries ? _gl.NONE : _gl.BROWSER_DEFAULT_WEBGL;
        _gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, texture.flipY);
        _gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha);
        _gl.pixelStorei(_gl.UNPACK_ALIGNMENT, texture.unpackAlignment);
        _gl.pixelStorei(_gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, unpackConversion);
        const needsPowerOfTwo = textureNeedsPowerOfTwo(texture) && isPowerOfTwo$1(texture.image) === false;
        let image = resizeImage(texture.image, needsPowerOfTwo, false, capabilities.maxTextureSize);
        image = verifyColorSpace(texture, image);
        const supportsMips = isPowerOfTwo$1(image) || isWebGL2, glFormat = utils.convert(texture.format, texture.colorSpace);
        let glType = utils.convert(texture.type), glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType, texture.colorSpace, texture.isVideoTexture);
        setTextureParameters(textureType, texture, supportsMips);
        let mipmap;
        const mipmaps = texture.mipmaps;
        const useTexStorage = isWebGL2 && texture.isVideoTexture !== true && glInternalFormat !== RGB_ETC1_Format;
        const allocateMemory = sourceProperties.__version === void 0 || forceUpload === true;
        const levels = getMipLevels(texture, image, supportsMips);
        if (texture.isDepthTexture) {
          glInternalFormat = _gl.DEPTH_COMPONENT;
          if (isWebGL2) {
            if (texture.type === FloatType) {
              glInternalFormat = _gl.DEPTH_COMPONENT32F;
            } else if (texture.type === UnsignedIntType) {
              glInternalFormat = _gl.DEPTH_COMPONENT24;
            } else if (texture.type === UnsignedInt248Type) {
              glInternalFormat = _gl.DEPTH24_STENCIL8;
            } else {
              glInternalFormat = _gl.DEPTH_COMPONENT16;
            }
          } else {
            if (texture.type === FloatType) {
              console.error("WebGLRenderer: Floating point depth texture requires WebGL2.");
            }
          }
          if (texture.format === DepthFormat && glInternalFormat === _gl.DEPTH_COMPONENT) {
            if (texture.type !== UnsignedShortType && texture.type !== UnsignedIntType) {
              console.warn("THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.");
              texture.type = UnsignedIntType;
              glType = utils.convert(texture.type);
            }
          }
          if (texture.format === DepthStencilFormat && glInternalFormat === _gl.DEPTH_COMPONENT) {
            glInternalFormat = _gl.DEPTH_STENCIL;
            if (texture.type !== UnsignedInt248Type) {
              console.warn("THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.");
              texture.type = UnsignedInt248Type;
              glType = utils.convert(texture.type);
            }
          }
          if (allocateMemory) {
            if (useTexStorage) {
              state.texStorage2D(_gl.TEXTURE_2D, 1, glInternalFormat, image.width, image.height);
            } else {
              state.texImage2D(_gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null);
            }
          }
        } else if (texture.isDataTexture) {
          if (mipmaps.length > 0 && supportsMips) {
            if (useTexStorage && allocateMemory) {
              state.texStorage2D(_gl.TEXTURE_2D, levels, glInternalFormat, mipmaps[0].width, mipmaps[0].height);
            }
            for (let i = 0, il = mipmaps.length; i < il; i++) {
              mipmap = mipmaps[i];
              if (useTexStorage) {
                state.texSubImage2D(_gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data);
              } else {
                state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
              }
            }
            texture.generateMipmaps = false;
          } else {
            if (useTexStorage) {
              if (allocateMemory) {
                state.texStorage2D(_gl.TEXTURE_2D, levels, glInternalFormat, image.width, image.height);
              }
              state.texSubImage2D(_gl.TEXTURE_2D, 0, 0, 0, image.width, image.height, glFormat, glType, image.data);
            } else {
              state.texImage2D(_gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data);
            }
          }
        } else if (texture.isCompressedTexture) {
          if (texture.isCompressedArrayTexture) {
            if (useTexStorage && allocateMemory) {
              state.texStorage3D(_gl.TEXTURE_2D_ARRAY, levels, glInternalFormat, mipmaps[0].width, mipmaps[0].height, image.depth);
            }
            for (let i = 0, il = mipmaps.length; i < il; i++) {
              mipmap = mipmaps[i];
              if (texture.format !== RGBAFormat) {
                if (glFormat !== null) {
                  if (useTexStorage) {
                    state.compressedTexSubImage3D(_gl.TEXTURE_2D_ARRAY, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, mipmap.data, 0, 0);
                  } else {
                    state.compressedTexImage3D(_gl.TEXTURE_2D_ARRAY, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, mipmap.data, 0, 0);
                  }
                } else {
                  console.warn("THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()");
                }
              } else {
                if (useTexStorage) {
                  state.texSubImage3D(_gl.TEXTURE_2D_ARRAY, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, glType, mipmap.data);
                } else {
                  state.texImage3D(_gl.TEXTURE_2D_ARRAY, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, glFormat, glType, mipmap.data);
                }
              }
            }
          } else {
            if (useTexStorage && allocateMemory) {
              state.texStorage2D(_gl.TEXTURE_2D, levels, glInternalFormat, mipmaps[0].width, mipmaps[0].height);
            }
            for (let i = 0, il = mipmaps.length; i < il; i++) {
              mipmap = mipmaps[i];
              if (texture.format !== RGBAFormat) {
                if (glFormat !== null) {
                  if (useTexStorage) {
                    state.compressedTexSubImage2D(_gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data);
                  } else {
                    state.compressedTexImage2D(_gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data);
                  }
                } else {
                  console.warn("THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()");
                }
              } else {
                if (useTexStorage) {
                  state.texSubImage2D(_gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data);
                } else {
                  state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
                }
              }
            }
          }
        } else if (texture.isDataArrayTexture) {
          if (useTexStorage) {
            if (allocateMemory) {
              state.texStorage3D(_gl.TEXTURE_2D_ARRAY, levels, glInternalFormat, image.width, image.height, image.depth);
            }
            state.texSubImage3D(_gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data);
          } else {
            state.texImage3D(_gl.TEXTURE_2D_ARRAY, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data);
          }
        } else if (texture.isData3DTexture) {
          if (useTexStorage) {
            if (allocateMemory) {
              state.texStorage3D(_gl.TEXTURE_3D, levels, glInternalFormat, image.width, image.height, image.depth);
            }
            state.texSubImage3D(_gl.TEXTURE_3D, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data);
          } else {
            state.texImage3D(_gl.TEXTURE_3D, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data);
          }
        } else if (texture.isFramebufferTexture) {
          if (allocateMemory) {
            if (useTexStorage) {
              state.texStorage2D(_gl.TEXTURE_2D, levels, glInternalFormat, image.width, image.height);
            } else {
              let width = image.width, height = image.height;
              for (let i = 0; i < levels; i++) {
                state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, width, height, 0, glFormat, glType, null);
                width >>= 1;
                height >>= 1;
              }
            }
          }
        } else {
          if (mipmaps.length > 0 && supportsMips) {
            if (useTexStorage && allocateMemory) {
              state.texStorage2D(_gl.TEXTURE_2D, levels, glInternalFormat, mipmaps[0].width, mipmaps[0].height);
            }
            for (let i = 0, il = mipmaps.length; i < il; i++) {
              mipmap = mipmaps[i];
              if (useTexStorage) {
                state.texSubImage2D(_gl.TEXTURE_2D, i, 0, 0, glFormat, glType, mipmap);
              } else {
                state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, glFormat, glType, mipmap);
              }
            }
            texture.generateMipmaps = false;
          } else {
            if (useTexStorage) {
              if (allocateMemory) {
                state.texStorage2D(_gl.TEXTURE_2D, levels, glInternalFormat, image.width, image.height);
              }
              state.texSubImage2D(_gl.TEXTURE_2D, 0, 0, 0, glFormat, glType, image);
            } else {
              state.texImage2D(_gl.TEXTURE_2D, 0, glInternalFormat, glFormat, glType, image);
            }
          }
        }
        if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
          generateMipmap(textureType);
        }
        sourceProperties.__version = source.version;
        if (texture.onUpdate) texture.onUpdate(texture);
      }
      textureProperties.__version = texture.version;
    }
    function uploadCubeTexture(textureProperties, texture, slot) {
      if (texture.image.length !== 6) return;
      const forceUpload = initTexture(textureProperties, texture);
      const source = texture.source;
      state.bindTexture(_gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture, _gl.TEXTURE0 + slot);
      const sourceProperties = properties.get(source);
      if (source.version !== sourceProperties.__version || forceUpload === true) {
        state.activeTexture(_gl.TEXTURE0 + slot);
        const workingPrimaries = ColorManagement.getPrimaries(ColorManagement.workingColorSpace);
        const texturePrimaries = texture.colorSpace === NoColorSpace ? null : ColorManagement.getPrimaries(texture.colorSpace);
        const unpackConversion = texture.colorSpace === NoColorSpace || workingPrimaries === texturePrimaries ? _gl.NONE : _gl.BROWSER_DEFAULT_WEBGL;
        _gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, texture.flipY);
        _gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha);
        _gl.pixelStorei(_gl.UNPACK_ALIGNMENT, texture.unpackAlignment);
        _gl.pixelStorei(_gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, unpackConversion);
        const isCompressed = texture.isCompressedTexture || texture.image[0].isCompressedTexture;
        const isDataTexture = texture.image[0] && texture.image[0].isDataTexture;
        const cubeImage = [];
        for (let i = 0; i < 6; i++) {
          if (!isCompressed && !isDataTexture) {
            cubeImage[i] = resizeImage(texture.image[i], false, true, capabilities.maxCubemapSize);
          } else {
            cubeImage[i] = isDataTexture ? texture.image[i].image : texture.image[i];
          }
          cubeImage[i] = verifyColorSpace(texture, cubeImage[i]);
        }
        const image = cubeImage[0], supportsMips = isPowerOfTwo$1(image) || isWebGL2, glFormat = utils.convert(texture.format, texture.colorSpace), glType = utils.convert(texture.type), glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType, texture.colorSpace);
        const useTexStorage = isWebGL2 && texture.isVideoTexture !== true;
        const allocateMemory = sourceProperties.__version === void 0 || forceUpload === true;
        let levels = getMipLevels(texture, image, supportsMips);
        setTextureParameters(_gl.TEXTURE_CUBE_MAP, texture, supportsMips);
        let mipmaps;
        if (isCompressed) {
          if (useTexStorage && allocateMemory) {
            state.texStorage2D(_gl.TEXTURE_CUBE_MAP, levels, glInternalFormat, image.width, image.height);
          }
          for (let i = 0; i < 6; i++) {
            mipmaps = cubeImage[i].mipmaps;
            for (let j = 0; j < mipmaps.length; j++) {
              const mipmap = mipmaps[j];
              if (texture.format !== RGBAFormat) {
                if (glFormat !== null) {
                  if (useTexStorage) {
                    state.compressedTexSubImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data);
                  } else {
                    state.compressedTexImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data);
                  }
                } else {
                  console.warn("THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()");
                }
              } else {
                if (useTexStorage) {
                  state.texSubImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data);
                } else {
                  state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
                }
              }
            }
          }
        } else {
          mipmaps = texture.mipmaps;
          if (useTexStorage && allocateMemory) {
            if (mipmaps.length > 0) levels++;
            state.texStorage2D(_gl.TEXTURE_CUBE_MAP, levels, glInternalFormat, cubeImage[0].width, cubeImage[0].height);
          }
          for (let i = 0; i < 6; i++) {
            if (isDataTexture) {
              if (useTexStorage) {
                state.texSubImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, 0, 0, cubeImage[i].width, cubeImage[i].height, glFormat, glType, cubeImage[i].data);
              } else {
                state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, cubeImage[i].width, cubeImage[i].height, 0, glFormat, glType, cubeImage[i].data);
              }
              for (let j = 0; j < mipmaps.length; j++) {
                const mipmap = mipmaps[j];
                const mipmapImage = mipmap.image[i].image;
                if (useTexStorage) {
                  state.texSubImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, 0, 0, mipmapImage.width, mipmapImage.height, glFormat, glType, mipmapImage.data);
                } else {
                  state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data);
                }
              }
            } else {
              if (useTexStorage) {
                state.texSubImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, 0, 0, glFormat, glType, cubeImage[i]);
              } else {
                state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, glFormat, glType, cubeImage[i]);
              }
              for (let j = 0; j < mipmaps.length; j++) {
                const mipmap = mipmaps[j];
                if (useTexStorage) {
                  state.texSubImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, 0, 0, glFormat, glType, mipmap.image[i]);
                } else {
                  state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[i]);
                }
              }
            }
          }
        }
        if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
          generateMipmap(_gl.TEXTURE_CUBE_MAP);
        }
        sourceProperties.__version = source.version;
        if (texture.onUpdate) texture.onUpdate(texture);
      }
      textureProperties.__version = texture.version;
    }
    function setupFrameBufferTexture(framebuffer, renderTarget, texture, attachment, textureTarget, level) {
      const glFormat = utils.convert(texture.format, texture.colorSpace);
      const glType = utils.convert(texture.type);
      const glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType, texture.colorSpace);
      const renderTargetProperties = properties.get(renderTarget);
      if (!renderTargetProperties.__hasExternalTextures) {
        const width = Math.max(1, renderTarget.width >> level);
        const height = Math.max(1, renderTarget.height >> level);
        if (textureTarget === _gl.TEXTURE_3D || textureTarget === _gl.TEXTURE_2D_ARRAY) {
          state.texImage3D(textureTarget, level, glInternalFormat, width, height, renderTarget.depth, 0, glFormat, glType, null);
        } else {
          state.texImage2D(textureTarget, level, glInternalFormat, width, height, 0, glFormat, glType, null);
        }
      }
      state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
      if (useMultisampledRTT(renderTarget)) {
        multisampledRTTExt.framebufferTexture2DMultisampleEXT(_gl.FRAMEBUFFER, attachment, textureTarget, properties.get(texture).__webglTexture, 0, getRenderTargetSamples(renderTarget));
      } else if (textureTarget === _gl.TEXTURE_2D || textureTarget >= _gl.TEXTURE_CUBE_MAP_POSITIVE_X && textureTarget <= _gl.TEXTURE_CUBE_MAP_NEGATIVE_Z) {
        _gl.framebufferTexture2D(_gl.FRAMEBUFFER, attachment, textureTarget, properties.get(texture).__webglTexture, level);
      }
      state.bindFramebuffer(_gl.FRAMEBUFFER, null);
    }
    function setupRenderBufferStorage(renderbuffer, renderTarget, isMultisample) {
      _gl.bindRenderbuffer(_gl.RENDERBUFFER, renderbuffer);
      if (renderTarget.depthBuffer && !renderTarget.stencilBuffer) {
        let glInternalFormat = isWebGL2 === true ? _gl.DEPTH_COMPONENT24 : _gl.DEPTH_COMPONENT16;
        if (isMultisample || useMultisampledRTT(renderTarget)) {
          const depthTexture = renderTarget.depthTexture;
          if (depthTexture && depthTexture.isDepthTexture) {
            if (depthTexture.type === FloatType) {
              glInternalFormat = _gl.DEPTH_COMPONENT32F;
            } else if (depthTexture.type === UnsignedIntType) {
              glInternalFormat = _gl.DEPTH_COMPONENT24;
            }
          }
          const samples = getRenderTargetSamples(renderTarget);
          if (useMultisampledRTT(renderTarget)) {
            multisampledRTTExt.renderbufferStorageMultisampleEXT(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
          } else {
            _gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
          }
        } else {
          _gl.renderbufferStorage(_gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height);
        }
        _gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer);
      } else if (renderTarget.depthBuffer && renderTarget.stencilBuffer) {
        const samples = getRenderTargetSamples(renderTarget);
        if (isMultisample && useMultisampledRTT(renderTarget) === false) {
          _gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, _gl.DEPTH24_STENCIL8, renderTarget.width, renderTarget.height);
        } else if (useMultisampledRTT(renderTarget)) {
          multisampledRTTExt.renderbufferStorageMultisampleEXT(_gl.RENDERBUFFER, samples, _gl.DEPTH24_STENCIL8, renderTarget.width, renderTarget.height);
        } else {
          _gl.renderbufferStorage(_gl.RENDERBUFFER, _gl.DEPTH_STENCIL, renderTarget.width, renderTarget.height);
        }
        _gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer);
      } else {
        const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [renderTarget.texture];
        for (let i = 0; i < textures.length; i++) {
          const texture = textures[i];
          const glFormat = utils.convert(texture.format, texture.colorSpace);
          const glType = utils.convert(texture.type);
          const glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType, texture.colorSpace);
          const samples = getRenderTargetSamples(renderTarget);
          if (isMultisample && useMultisampledRTT(renderTarget) === false) {
            _gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
          } else if (useMultisampledRTT(renderTarget)) {
            multisampledRTTExt.renderbufferStorageMultisampleEXT(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
          } else {
            _gl.renderbufferStorage(_gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height);
          }
        }
      }
      _gl.bindRenderbuffer(_gl.RENDERBUFFER, null);
    }
    function setupDepthTexture(framebuffer, renderTarget) {
      const isCube = renderTarget && renderTarget.isWebGLCubeRenderTarget;
      if (isCube) throw new Error("Depth Texture with cube render targets is not supported");
      state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
      if (!(renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture)) {
        throw new Error("renderTarget.depthTexture must be an instance of THREE.DepthTexture");
      }
      if (!properties.get(renderTarget.depthTexture).__webglTexture || renderTarget.depthTexture.image.width !== renderTarget.width || renderTarget.depthTexture.image.height !== renderTarget.height) {
        renderTarget.depthTexture.image.width = renderTarget.width;
        renderTarget.depthTexture.image.height = renderTarget.height;
        renderTarget.depthTexture.needsUpdate = true;
      }
      setTexture2D(renderTarget.depthTexture, 0);
      const webglDepthTexture = properties.get(renderTarget.depthTexture).__webglTexture;
      const samples = getRenderTargetSamples(renderTarget);
      if (renderTarget.depthTexture.format === DepthFormat) {
        if (useMultisampledRTT(renderTarget)) {
          multisampledRTTExt.framebufferTexture2DMultisampleEXT(_gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples);
        } else {
          _gl.framebufferTexture2D(_gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0);
        }
      } else if (renderTarget.depthTexture.format === DepthStencilFormat) {
        if (useMultisampledRTT(renderTarget)) {
          multisampledRTTExt.framebufferTexture2DMultisampleEXT(_gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples);
        } else {
          _gl.framebufferTexture2D(_gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0);
        }
      } else {
        throw new Error("Unknown depthTexture format");
      }
    }
    function setupDepthRenderbuffer(renderTarget) {
      const renderTargetProperties = properties.get(renderTarget);
      const isCube = renderTarget.isWebGLCubeRenderTarget === true;
      if (renderTarget.depthTexture && !renderTargetProperties.__autoAllocateDepthBuffer) {
        if (isCube) throw new Error("target.depthTexture not supported in Cube render targets");
        setupDepthTexture(renderTargetProperties.__webglFramebuffer, renderTarget);
      } else {
        if (isCube) {
          renderTargetProperties.__webglDepthbuffer = [];
          for (let i = 0; i < 6; i++) {
            state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[i]);
            renderTargetProperties.__webglDepthbuffer[i] = _gl.createRenderbuffer();
            setupRenderBufferStorage(renderTargetProperties.__webglDepthbuffer[i], renderTarget, false);
          }
        } else {
          state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);
          renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
          setupRenderBufferStorage(renderTargetProperties.__webglDepthbuffer, renderTarget, false);
        }
      }
      state.bindFramebuffer(_gl.FRAMEBUFFER, null);
    }
    function rebindTextures(renderTarget, colorTexture, depthTexture) {
      const renderTargetProperties = properties.get(renderTarget);
      if (colorTexture !== void 0) {
        setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer, renderTarget, renderTarget.texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D, 0);
      }
      if (depthTexture !== void 0) {
        setupDepthRenderbuffer(renderTarget);
      }
    }
    function setupRenderTarget(renderTarget) {
      const texture = renderTarget.texture;
      const renderTargetProperties = properties.get(renderTarget);
      const textureProperties = properties.get(texture);
      renderTarget.addEventListener("dispose", onRenderTargetDispose);
      if (renderTarget.isWebGLMultipleRenderTargets !== true) {
        if (textureProperties.__webglTexture === void 0) {
          textureProperties.__webglTexture = _gl.createTexture();
        }
        textureProperties.__version = texture.version;
        info.memory.textures++;
      }
      const isCube = renderTarget.isWebGLCubeRenderTarget === true;
      const isMultipleRenderTargets = renderTarget.isWebGLMultipleRenderTargets === true;
      const supportsMips = isPowerOfTwo$1(renderTarget) || isWebGL2;
      if (isCube) {
        renderTargetProperties.__webglFramebuffer = [];
        for (let i = 0; i < 6; i++) {
          if (isWebGL2 && texture.mipmaps && texture.mipmaps.length > 0) {
            renderTargetProperties.__webglFramebuffer[i] = [];
            for (let level = 0; level < texture.mipmaps.length; level++) {
              renderTargetProperties.__webglFramebuffer[i][level] = _gl.createFramebuffer();
            }
          } else {
            renderTargetProperties.__webglFramebuffer[i] = _gl.createFramebuffer();
          }
        }
      } else {
        if (isWebGL2 && texture.mipmaps && texture.mipmaps.length > 0) {
          renderTargetProperties.__webglFramebuffer = [];
          for (let level = 0; level < texture.mipmaps.length; level++) {
            renderTargetProperties.__webglFramebuffer[level] = _gl.createFramebuffer();
          }
        } else {
          renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();
        }
        if (isMultipleRenderTargets) {
          if (capabilities.drawBuffers) {
            const textures = renderTarget.texture;
            for (let i = 0, il = textures.length; i < il; i++) {
              const attachmentProperties = properties.get(textures[i]);
              if (attachmentProperties.__webglTexture === void 0) {
                attachmentProperties.__webglTexture = _gl.createTexture();
                info.memory.textures++;
              }
            }
          } else {
            console.warn("THREE.WebGLRenderer: WebGLMultipleRenderTargets can only be used with WebGL2 or WEBGL_draw_buffers extension.");
          }
        }
        if (isWebGL2 && renderTarget.samples > 0 && useMultisampledRTT(renderTarget) === false) {
          const textures = isMultipleRenderTargets ? texture : [texture];
          renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
          renderTargetProperties.__webglColorRenderbuffer = [];
          state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
          for (let i = 0; i < textures.length; i++) {
            const texture2 = textures[i];
            renderTargetProperties.__webglColorRenderbuffer[i] = _gl.createRenderbuffer();
            _gl.bindRenderbuffer(_gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[i]);
            const glFormat = utils.convert(texture2.format, texture2.colorSpace);
            const glType = utils.convert(texture2.type);
            const glInternalFormat = getInternalFormat(texture2.internalFormat, glFormat, glType, texture2.colorSpace, renderTarget.isXRRenderTarget === true);
            const samples = getRenderTargetSamples(renderTarget);
            _gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
            _gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[i]);
          }
          _gl.bindRenderbuffer(_gl.RENDERBUFFER, null);
          if (renderTarget.depthBuffer) {
            renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
            setupRenderBufferStorage(renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true);
          }
          state.bindFramebuffer(_gl.FRAMEBUFFER, null);
        }
      }
      if (isCube) {
        state.bindTexture(_gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture);
        setTextureParameters(_gl.TEXTURE_CUBE_MAP, texture, supportsMips);
        for (let i = 0; i < 6; i++) {
          if (isWebGL2 && texture.mipmaps && texture.mipmaps.length > 0) {
            for (let level = 0; level < texture.mipmaps.length; level++) {
              setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer[i][level], renderTarget, texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, level);
            }
          } else {
            setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer[i], renderTarget, texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0);
          }
        }
        if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
          generateMipmap(_gl.TEXTURE_CUBE_MAP);
        }
        state.unbindTexture();
      } else if (isMultipleRenderTargets) {
        const textures = renderTarget.texture;
        for (let i = 0, il = textures.length; i < il; i++) {
          const attachment = textures[i];
          const attachmentProperties = properties.get(attachment);
          state.bindTexture(_gl.TEXTURE_2D, attachmentProperties.__webglTexture);
          setTextureParameters(_gl.TEXTURE_2D, attachment, supportsMips);
          setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer, renderTarget, attachment, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D, 0);
          if (textureNeedsGenerateMipmaps(attachment, supportsMips)) {
            generateMipmap(_gl.TEXTURE_2D);
          }
        }
        state.unbindTexture();
      } else {
        let glTextureType = _gl.TEXTURE_2D;
        if (renderTarget.isWebGL3DRenderTarget || renderTarget.isWebGLArrayRenderTarget) {
          if (isWebGL2) {
            glTextureType = renderTarget.isWebGL3DRenderTarget ? _gl.TEXTURE_3D : _gl.TEXTURE_2D_ARRAY;
          } else {
            console.error("THREE.WebGLTextures: THREE.Data3DTexture and THREE.DataArrayTexture only supported with WebGL2.");
          }
        }
        state.bindTexture(glTextureType, textureProperties.__webglTexture);
        setTextureParameters(glTextureType, texture, supportsMips);
        if (isWebGL2 && texture.mipmaps && texture.mipmaps.length > 0) {
          for (let level = 0; level < texture.mipmaps.length; level++) {
            setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer[level], renderTarget, texture, _gl.COLOR_ATTACHMENT0, glTextureType, level);
          }
        } else {
          setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer, renderTarget, texture, _gl.COLOR_ATTACHMENT0, glTextureType, 0);
        }
        if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
          generateMipmap(glTextureType);
        }
        state.unbindTexture();
      }
      if (renderTarget.depthBuffer) {
        setupDepthRenderbuffer(renderTarget);
      }
    }
    function updateRenderTargetMipmap(renderTarget) {
      const supportsMips = isPowerOfTwo$1(renderTarget) || isWebGL2;
      const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [renderTarget.texture];
      for (let i = 0, il = textures.length; i < il; i++) {
        const texture = textures[i];
        if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
          const target = renderTarget.isWebGLCubeRenderTarget ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
          const webglTexture = properties.get(texture).__webglTexture;
          state.bindTexture(target, webglTexture);
          generateMipmap(target);
          state.unbindTexture();
        }
      }
    }
    function updateMultisampleRenderTarget(renderTarget) {
      if (isWebGL2 && renderTarget.samples > 0 && useMultisampledRTT(renderTarget) === false) {
        const textures = renderTarget.isWebGLMultipleRenderTargets ? renderTarget.texture : [renderTarget.texture];
        const width = renderTarget.width;
        const height = renderTarget.height;
        let mask = _gl.COLOR_BUFFER_BIT;
        const invalidationArray = [];
        const depthStyle = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT;
        const renderTargetProperties = properties.get(renderTarget);
        const isMultipleRenderTargets = renderTarget.isWebGLMultipleRenderTargets === true;
        if (isMultipleRenderTargets) {
          for (let i = 0; i < textures.length; i++) {
            state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
            _gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.RENDERBUFFER, null);
            state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);
            _gl.framebufferTexture2D(_gl.DRAW_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D, null, 0);
          }
        }
        state.bindFramebuffer(_gl.READ_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
        state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);
        for (let i = 0; i < textures.length; i++) {
          invalidationArray.push(_gl.COLOR_ATTACHMENT0 + i);
          if (renderTarget.depthBuffer) {
            invalidationArray.push(depthStyle);
          }
          const ignoreDepthValues = renderTargetProperties.__ignoreDepthValues !== void 0 ? renderTargetProperties.__ignoreDepthValues : false;
          if (ignoreDepthValues === false) {
            if (renderTarget.depthBuffer) mask |= _gl.DEPTH_BUFFER_BIT;
            if (renderTarget.stencilBuffer) mask |= _gl.STENCIL_BUFFER_BIT;
          }
          if (isMultipleRenderTargets) {
            _gl.framebufferRenderbuffer(_gl.READ_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[i]);
          }
          if (ignoreDepthValues === true) {
            _gl.invalidateFramebuffer(_gl.READ_FRAMEBUFFER, [depthStyle]);
            _gl.invalidateFramebuffer(_gl.DRAW_FRAMEBUFFER, [depthStyle]);
          }
          if (isMultipleRenderTargets) {
            const webglTexture = properties.get(textures[i]).__webglTexture;
            _gl.framebufferTexture2D(_gl.DRAW_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D, webglTexture, 0);
          }
          _gl.blitFramebuffer(0, 0, width, height, 0, 0, width, height, mask, _gl.NEAREST);
          if (supportsInvalidateFramebuffer) {
            _gl.invalidateFramebuffer(_gl.READ_FRAMEBUFFER, invalidationArray);
          }
        }
        state.bindFramebuffer(_gl.READ_FRAMEBUFFER, null);
        state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, null);
        if (isMultipleRenderTargets) {
          for (let i = 0; i < textures.length; i++) {
            state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
            _gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[i]);
            const webglTexture = properties.get(textures[i]).__webglTexture;
            state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);
            _gl.framebufferTexture2D(_gl.DRAW_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D, webglTexture, 0);
          }
        }
        state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
      }
    }
    function getRenderTargetSamples(renderTarget) {
      return Math.min(capabilities.maxSamples, renderTarget.samples);
    }
    function useMultisampledRTT(renderTarget) {
      const renderTargetProperties = properties.get(renderTarget);
      return isWebGL2 && renderTarget.samples > 0 && extensions.has("WEBGL_multisampled_render_to_texture") === true && renderTargetProperties.__useRenderToTexture !== false;
    }
    function updateVideoTexture(texture) {
      const frame = info.render.frame;
      if (_videoTextures.get(texture) !== frame) {
        _videoTextures.set(texture, frame);
        texture.update();
      }
    }
    function verifyColorSpace(texture, image) {
      const colorSpace = texture.colorSpace;
      const format = texture.format;
      const type = texture.type;
      if (texture.isCompressedTexture === true || texture.isVideoTexture === true || texture.format === _SRGBAFormat) return image;
      if (colorSpace !== LinearSRGBColorSpace && colorSpace !== NoColorSpace) {
        if (ColorManagement.getTransfer(colorSpace) === SRGBTransfer) {
          if (isWebGL2 === false) {
            if (extensions.has("EXT_sRGB") === true && format === RGBAFormat) {
              texture.format = _SRGBAFormat;
              texture.minFilter = LinearFilter;
              texture.generateMipmaps = false;
            } else {
              image = ImageUtils.sRGBToLinear(image);
            }
          } else {
            if (format !== RGBAFormat || type !== UnsignedByteType) {
              console.warn("THREE.WebGLTextures: sRGB encoded textures have to use RGBAFormat and UnsignedByteType.");
            }
          }
        } else {
          console.error("THREE.WebGLTextures: Unsupported texture color space:", colorSpace);
        }
      }
      return image;
    }
    this.allocateTextureUnit = allocateTextureUnit;
    this.resetTextureUnits = resetTextureUnits;
    this.setTexture2D = setTexture2D;
    this.setTexture2DArray = setTexture2DArray;
    this.setTexture3D = setTexture3D;
    this.setTextureCube = setTextureCube;
    this.rebindTextures = rebindTextures;
    this.setupRenderTarget = setupRenderTarget;
    this.updateRenderTargetMipmap = updateRenderTargetMipmap;
    this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
    this.setupDepthRenderbuffer = setupDepthRenderbuffer;
    this.setupFrameBufferTexture = setupFrameBufferTexture;
    this.useMultisampledRTT = useMultisampledRTT;
  }
  function WebGLUtils(gl, extensions, capabilities) {
    const isWebGL2 = capabilities.isWebGL2;
    function convert(p, colorSpace = NoColorSpace) {
      let extension;
      const transfer = ColorManagement.getTransfer(colorSpace);
      if (p === UnsignedByteType) return gl.UNSIGNED_BYTE;
      if (p === UnsignedShort4444Type) return gl.UNSIGNED_SHORT_4_4_4_4;
      if (p === UnsignedShort5551Type) return gl.UNSIGNED_SHORT_5_5_5_1;
      if (p === ByteType) return gl.BYTE;
      if (p === ShortType) return gl.SHORT;
      if (p === UnsignedShortType) return gl.UNSIGNED_SHORT;
      if (p === IntType) return gl.INT;
      if (p === UnsignedIntType) return gl.UNSIGNED_INT;
      if (p === FloatType) return gl.FLOAT;
      if (p === HalfFloatType) {
        if (isWebGL2) return gl.HALF_FLOAT;
        extension = extensions.get("OES_texture_half_float");
        if (extension !== null) {
          return extension.HALF_FLOAT_OES;
        } else {
          return null;
        }
      }
      if (p === AlphaFormat) return gl.ALPHA;
      if (p === RGBAFormat) return gl.RGBA;
      if (p === LuminanceFormat) return gl.LUMINANCE;
      if (p === LuminanceAlphaFormat) return gl.LUMINANCE_ALPHA;
      if (p === DepthFormat) return gl.DEPTH_COMPONENT;
      if (p === DepthStencilFormat) return gl.DEPTH_STENCIL;
      if (p === _SRGBAFormat) {
        extension = extensions.get("EXT_sRGB");
        if (extension !== null) {
          return extension.SRGB_ALPHA_EXT;
        } else {
          return null;
        }
      }
      if (p === RedFormat) return gl.RED;
      if (p === RedIntegerFormat) return gl.RED_INTEGER;
      if (p === RGFormat) return gl.RG;
      if (p === RGIntegerFormat) return gl.RG_INTEGER;
      if (p === RGBAIntegerFormat) return gl.RGBA_INTEGER;
      if (p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format) {
        if (transfer === SRGBTransfer) {
          extension = extensions.get("WEBGL_compressed_texture_s3tc_srgb");
          if (extension !== null) {
            if (p === RGB_S3TC_DXT1_Format) return extension.COMPRESSED_SRGB_S3TC_DXT1_EXT;
            if (p === RGBA_S3TC_DXT1_Format) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
            if (p === RGBA_S3TC_DXT3_Format) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
            if (p === RGBA_S3TC_DXT5_Format) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
          } else {
            return null;
          }
        } else {
          extension = extensions.get("WEBGL_compressed_texture_s3tc");
          if (extension !== null) {
            if (p === RGB_S3TC_DXT1_Format) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
            if (p === RGBA_S3TC_DXT1_Format) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
            if (p === RGBA_S3TC_DXT3_Format) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
            if (p === RGBA_S3TC_DXT5_Format) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
          } else {
            return null;
          }
        }
      }
      if (p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format) {
        extension = extensions.get("WEBGL_compressed_texture_pvrtc");
        if (extension !== null) {
          if (p === RGB_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
          if (p === RGB_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
          if (p === RGBA_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
          if (p === RGBA_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
        } else {
          return null;
        }
      }
      if (p === RGB_ETC1_Format) {
        extension = extensions.get("WEBGL_compressed_texture_etc1");
        if (extension !== null) {
          return extension.COMPRESSED_RGB_ETC1_WEBGL;
        } else {
          return null;
        }
      }
      if (p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format) {
        extension = extensions.get("WEBGL_compressed_texture_etc");
        if (extension !== null) {
          if (p === RGB_ETC2_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ETC2 : extension.COMPRESSED_RGB8_ETC2;
          if (p === RGBA_ETC2_EAC_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : extension.COMPRESSED_RGBA8_ETC2_EAC;
        } else {
          return null;
        }
      }
      if (p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format || p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format || p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format || p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format || p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format) {
        extension = extensions.get("WEBGL_compressed_texture_astc");
        if (extension !== null) {
          if (p === RGBA_ASTC_4x4_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR : extension.COMPRESSED_RGBA_ASTC_4x4_KHR;
          if (p === RGBA_ASTC_5x4_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR : extension.COMPRESSED_RGBA_ASTC_5x4_KHR;
          if (p === RGBA_ASTC_5x5_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR : extension.COMPRESSED_RGBA_ASTC_5x5_KHR;
          if (p === RGBA_ASTC_6x5_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR : extension.COMPRESSED_RGBA_ASTC_6x5_KHR;
          if (p === RGBA_ASTC_6x6_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR : extension.COMPRESSED_RGBA_ASTC_6x6_KHR;
          if (p === RGBA_ASTC_8x5_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR : extension.COMPRESSED_RGBA_ASTC_8x5_KHR;
          if (p === RGBA_ASTC_8x6_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR : extension.COMPRESSED_RGBA_ASTC_8x6_KHR;
          if (p === RGBA_ASTC_8x8_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR : extension.COMPRESSED_RGBA_ASTC_8x8_KHR;
          if (p === RGBA_ASTC_10x5_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR : extension.COMPRESSED_RGBA_ASTC_10x5_KHR;
          if (p === RGBA_ASTC_10x6_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR : extension.COMPRESSED_RGBA_ASTC_10x6_KHR;
          if (p === RGBA_ASTC_10x8_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR : extension.COMPRESSED_RGBA_ASTC_10x8_KHR;
          if (p === RGBA_ASTC_10x10_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR : extension.COMPRESSED_RGBA_ASTC_10x10_KHR;
          if (p === RGBA_ASTC_12x10_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR : extension.COMPRESSED_RGBA_ASTC_12x10_KHR;
          if (p === RGBA_ASTC_12x12_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR : extension.COMPRESSED_RGBA_ASTC_12x12_KHR;
        } else {
          return null;
        }
      }
      if (p === RGBA_BPTC_Format || p === RGB_BPTC_SIGNED_Format || p === RGB_BPTC_UNSIGNED_Format) {
        extension = extensions.get("EXT_texture_compression_bptc");
        if (extension !== null) {
          if (p === RGBA_BPTC_Format) return transfer === SRGBTransfer ? extension.COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT : extension.COMPRESSED_RGBA_BPTC_UNORM_EXT;
          if (p === RGB_BPTC_SIGNED_Format) return extension.COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT;
          if (p === RGB_BPTC_UNSIGNED_Format) return extension.COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT;
        } else {
          return null;
        }
      }
      if (p === RED_RGTC1_Format || p === SIGNED_RED_RGTC1_Format || p === RED_GREEN_RGTC2_Format || p === SIGNED_RED_GREEN_RGTC2_Format) {
        extension = extensions.get("EXT_texture_compression_rgtc");
        if (extension !== null) {
          if (p === RGBA_BPTC_Format) return extension.COMPRESSED_RED_RGTC1_EXT;
          if (p === SIGNED_RED_RGTC1_Format) return extension.COMPRESSED_SIGNED_RED_RGTC1_EXT;
          if (p === RED_GREEN_RGTC2_Format) return extension.COMPRESSED_RED_GREEN_RGTC2_EXT;
          if (p === SIGNED_RED_GREEN_RGTC2_Format) return extension.COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT;
        } else {
          return null;
        }
      }
      if (p === UnsignedInt248Type) {
        if (isWebGL2) return gl.UNSIGNED_INT_24_8;
        extension = extensions.get("WEBGL_depth_texture");
        if (extension !== null) {
          return extension.UNSIGNED_INT_24_8_WEBGL;
        } else {
          return null;
        }
      }
      return gl[p] !== void 0 ? gl[p] : null;
    }
    return { convert };
  }
  var ArrayCamera = class extends PerspectiveCamera {
    constructor(array = []) {
      super();
      this.isArrayCamera = true;
      this.cameras = array;
    }
  };
  var Group = class extends Object3D {
    constructor() {
      super();
      this.isGroup = true;
      this.type = "Group";
    }
  };
  var _moveEvent = { type: "move" };
  var WebXRController = class {
    constructor() {
      this._targetRay = null;
      this._grip = null;
      this._hand = null;
    }
    getHandSpace() {
      if (this._hand === null) {
        this._hand = new Group();
        this._hand.matrixAutoUpdate = false;
        this._hand.visible = false;
        this._hand.joints = {};
        this._hand.inputState = { pinching: false };
      }
      return this._hand;
    }
    getTargetRaySpace() {
      if (this._targetRay === null) {
        this._targetRay = new Group();
        this._targetRay.matrixAutoUpdate = false;
        this._targetRay.visible = false;
        this._targetRay.hasLinearVelocity = false;
        this._targetRay.linearVelocity = new Vector3();
        this._targetRay.hasAngularVelocity = false;
        this._targetRay.angularVelocity = new Vector3();
      }
      return this._targetRay;
    }
    getGripSpace() {
      if (this._grip === null) {
        this._grip = new Group();
        this._grip.matrixAutoUpdate = false;
        this._grip.visible = false;
        this._grip.hasLinearVelocity = false;
        this._grip.linearVelocity = new Vector3();
        this._grip.hasAngularVelocity = false;
        this._grip.angularVelocity = new Vector3();
      }
      return this._grip;
    }
    dispatchEvent(event) {
      if (this._targetRay !== null) {
        this._targetRay.dispatchEvent(event);
      }
      if (this._grip !== null) {
        this._grip.dispatchEvent(event);
      }
      if (this._hand !== null) {
        this._hand.dispatchEvent(event);
      }
      return this;
    }
    connect(inputSource) {
      if (inputSource && inputSource.hand) {
        const hand = this._hand;
        if (hand) {
          for (const inputjoint of inputSource.hand.values()) {
            this._getHandJoint(hand, inputjoint);
          }
        }
      }
      this.dispatchEvent({ type: "connected", data: inputSource });
      return this;
    }
    disconnect(inputSource) {
      this.dispatchEvent({ type: "disconnected", data: inputSource });
      if (this._targetRay !== null) {
        this._targetRay.visible = false;
      }
      if (this._grip !== null) {
        this._grip.visible = false;
      }
      if (this._hand !== null) {
        this._hand.visible = false;
      }
      return this;
    }
    update(inputSource, frame, referenceSpace) {
      let inputPose = null;
      let gripPose = null;
      let handPose = null;
      const targetRay = this._targetRay;
      const grip = this._grip;
      const hand = this._hand;
      if (inputSource && frame.session.visibilityState !== "visible-blurred") {
        if (hand && inputSource.hand) {
          handPose = true;
          for (const inputjoint of inputSource.hand.values()) {
            const jointPose = frame.getJointPose(inputjoint, referenceSpace);
            const joint = this._getHandJoint(hand, inputjoint);
            if (jointPose !== null) {
              joint.matrix.fromArray(jointPose.transform.matrix);
              joint.matrix.decompose(joint.position, joint.rotation, joint.scale);
              joint.matrixWorldNeedsUpdate = true;
              joint.jointRadius = jointPose.radius;
            }
            joint.visible = jointPose !== null;
          }
          const indexTip = hand.joints["index-finger-tip"];
          const thumbTip = hand.joints["thumb-tip"];
          const distance = indexTip.position.distanceTo(thumbTip.position);
          const distanceToPinch = 0.02;
          const threshold = 5e-3;
          if (hand.inputState.pinching && distance > distanceToPinch + threshold) {
            hand.inputState.pinching = false;
            this.dispatchEvent({
              type: "pinchend",
              handedness: inputSource.handedness,
              target: this
            });
          } else if (!hand.inputState.pinching && distance <= distanceToPinch - threshold) {
            hand.inputState.pinching = true;
            this.dispatchEvent({
              type: "pinchstart",
              handedness: inputSource.handedness,
              target: this
            });
          }
        } else {
          if (grip !== null && inputSource.gripSpace) {
            gripPose = frame.getPose(inputSource.gripSpace, referenceSpace);
            if (gripPose !== null) {
              grip.matrix.fromArray(gripPose.transform.matrix);
              grip.matrix.decompose(grip.position, grip.rotation, grip.scale);
              grip.matrixWorldNeedsUpdate = true;
              if (gripPose.linearVelocity) {
                grip.hasLinearVelocity = true;
                grip.linearVelocity.copy(gripPose.linearVelocity);
              } else {
                grip.hasLinearVelocity = false;
              }
              if (gripPose.angularVelocity) {
                grip.hasAngularVelocity = true;
                grip.angularVelocity.copy(gripPose.angularVelocity);
              } else {
                grip.hasAngularVelocity = false;
              }
            }
          }
        }
        if (targetRay !== null) {
          inputPose = frame.getPose(inputSource.targetRaySpace, referenceSpace);
          if (inputPose === null && gripPose !== null) {
            inputPose = gripPose;
          }
          if (inputPose !== null) {
            targetRay.matrix.fromArray(inputPose.transform.matrix);
            targetRay.matrix.decompose(targetRay.position, targetRay.rotation, targetRay.scale);
            targetRay.matrixWorldNeedsUpdate = true;
            if (inputPose.linearVelocity) {
              targetRay.hasLinearVelocity = true;
              targetRay.linearVelocity.copy(inputPose.linearVelocity);
            } else {
              targetRay.hasLinearVelocity = false;
            }
            if (inputPose.angularVelocity) {
              targetRay.hasAngularVelocity = true;
              targetRay.angularVelocity.copy(inputPose.angularVelocity);
            } else {
              targetRay.hasAngularVelocity = false;
            }
            this.dispatchEvent(_moveEvent);
          }
        }
      }
      if (targetRay !== null) {
        targetRay.visible = inputPose !== null;
      }
      if (grip !== null) {
        grip.visible = gripPose !== null;
      }
      if (hand !== null) {
        hand.visible = handPose !== null;
      }
      return this;
    }
    // private method
    _getHandJoint(hand, inputjoint) {
      if (hand.joints[inputjoint.jointName] === void 0) {
        const joint = new Group();
        joint.matrixAutoUpdate = false;
        joint.visible = false;
        hand.joints[inputjoint.jointName] = joint;
        hand.add(joint);
      }
      return hand.joints[inputjoint.jointName];
    }
  };
  var WebXRManager = class extends EventDispatcher {
    constructor(renderer, gl) {
      super();
      const scope = this;
      let session = null;
      let framebufferScaleFactor = 1;
      let referenceSpace = null;
      let referenceSpaceType = "local-floor";
      let foveation = 1;
      let customReferenceSpace = null;
      let pose = null;
      let glBinding = null;
      let glProjLayer = null;
      let glBaseLayer = null;
      let xrFrame = null;
      const attributes = gl.getContextAttributes();
      let initialRenderTarget = null;
      let newRenderTarget = null;
      const controllers = [];
      const controllerInputSources = [];
      const currentSize = new Vector2();
      let currentPixelRatio = null;
      const cameraL = new PerspectiveCamera();
      cameraL.layers.enable(1);
      cameraL.viewport = new Vector4();
      const cameraR = new PerspectiveCamera();
      cameraR.layers.enable(2);
      cameraR.viewport = new Vector4();
      const cameras = [cameraL, cameraR];
      const cameraXR = new ArrayCamera();
      cameraXR.layers.enable(1);
      cameraXR.layers.enable(2);
      let _currentDepthNear = null;
      let _currentDepthFar = null;
      this.cameraAutoUpdate = true;
      this.enabled = false;
      this.isPresenting = false;
      this.getController = function(index) {
        let controller = controllers[index];
        if (controller === void 0) {
          controller = new WebXRController();
          controllers[index] = controller;
        }
        return controller.getTargetRaySpace();
      };
      this.getControllerGrip = function(index) {
        let controller = controllers[index];
        if (controller === void 0) {
          controller = new WebXRController();
          controllers[index] = controller;
        }
        return controller.getGripSpace();
      };
      this.getHand = function(index) {
        let controller = controllers[index];
        if (controller === void 0) {
          controller = new WebXRController();
          controllers[index] = controller;
        }
        return controller.getHandSpace();
      };
      function onSessionEvent(event) {
        const controllerIndex = controllerInputSources.indexOf(event.inputSource);
        if (controllerIndex === -1) {
          return;
        }
        const controller = controllers[controllerIndex];
        if (controller !== void 0) {
          controller.update(event.inputSource, event.frame, customReferenceSpace || referenceSpace);
          controller.dispatchEvent({ type: event.type, data: event.inputSource });
        }
      }
      function onSessionEnd() {
        session.removeEventListener("select", onSessionEvent);
        session.removeEventListener("selectstart", onSessionEvent);
        session.removeEventListener("selectend", onSessionEvent);
        session.removeEventListener("squeeze", onSessionEvent);
        session.removeEventListener("squeezestart", onSessionEvent);
        session.removeEventListener("squeezeend", onSessionEvent);
        session.removeEventListener("end", onSessionEnd);
        session.removeEventListener("inputsourceschange", onInputSourcesChange);
        for (let i = 0; i < controllers.length; i++) {
          const inputSource = controllerInputSources[i];
          if (inputSource === null) continue;
          controllerInputSources[i] = null;
          controllers[i].disconnect(inputSource);
        }
        _currentDepthNear = null;
        _currentDepthFar = null;
        renderer.setRenderTarget(initialRenderTarget);
        glBaseLayer = null;
        glProjLayer = null;
        glBinding = null;
        session = null;
        newRenderTarget = null;
        animation.stop();
        scope.isPresenting = false;
        renderer.setPixelRatio(currentPixelRatio);
        renderer.setSize(currentSize.width, currentSize.height, false);
        scope.dispatchEvent({ type: "sessionend" });
      }
      this.setFramebufferScaleFactor = function(value) {
        framebufferScaleFactor = value;
        if (scope.isPresenting === true) {
          console.warn("THREE.WebXRManager: Cannot change framebuffer scale while presenting.");
        }
      };
      this.setReferenceSpaceType = function(value) {
        referenceSpaceType = value;
        if (scope.isPresenting === true) {
          console.warn("THREE.WebXRManager: Cannot change reference space type while presenting.");
        }
      };
      this.getReferenceSpace = function() {
        return customReferenceSpace || referenceSpace;
      };
      this.setReferenceSpace = function(space) {
        customReferenceSpace = space;
      };
      this.getBaseLayer = function() {
        return glProjLayer !== null ? glProjLayer : glBaseLayer;
      };
      this.getBinding = function() {
        return glBinding;
      };
      this.getFrame = function() {
        return xrFrame;
      };
      this.getSession = function() {
        return session;
      };
      this.setSession = async function(value) {
        session = value;
        if (session !== null) {
          initialRenderTarget = renderer.getRenderTarget();
          session.addEventListener("select", onSessionEvent);
          session.addEventListener("selectstart", onSessionEvent);
          session.addEventListener("selectend", onSessionEvent);
          session.addEventListener("squeeze", onSessionEvent);
          session.addEventListener("squeezestart", onSessionEvent);
          session.addEventListener("squeezeend", onSessionEvent);
          session.addEventListener("end", onSessionEnd);
          session.addEventListener("inputsourceschange", onInputSourcesChange);
          if (attributes.xrCompatible !== true) {
            await gl.makeXRCompatible();
          }
          currentPixelRatio = renderer.getPixelRatio();
          renderer.getSize(currentSize);
          if (session.renderState.layers === void 0 || renderer.capabilities.isWebGL2 === false) {
            const layerInit = {
              antialias: session.renderState.layers === void 0 ? attributes.antialias : true,
              alpha: true,
              depth: attributes.depth,
              stencil: attributes.stencil,
              framebufferScaleFactor
            };
            glBaseLayer = new XRWebGLLayer(session, gl, layerInit);
            session.updateRenderState({ baseLayer: glBaseLayer });
            renderer.setPixelRatio(1);
            renderer.setSize(glBaseLayer.framebufferWidth, glBaseLayer.framebufferHeight, false);
            newRenderTarget = new WebGLRenderTarget(
              glBaseLayer.framebufferWidth,
              glBaseLayer.framebufferHeight,
              {
                format: RGBAFormat,
                type: UnsignedByteType,
                colorSpace: renderer.outputColorSpace,
                stencilBuffer: attributes.stencil
              }
            );
          } else {
            let depthFormat = null;
            let depthType = null;
            let glDepthFormat = null;
            if (attributes.depth) {
              glDepthFormat = attributes.stencil ? gl.DEPTH24_STENCIL8 : gl.DEPTH_COMPONENT24;
              depthFormat = attributes.stencil ? DepthStencilFormat : DepthFormat;
              depthType = attributes.stencil ? UnsignedInt248Type : UnsignedIntType;
            }
            const projectionlayerInit = {
              colorFormat: gl.RGBA8,
              depthFormat: glDepthFormat,
              scaleFactor: framebufferScaleFactor
            };
            glBinding = new XRWebGLBinding(session, gl);
            glProjLayer = glBinding.createProjectionLayer(projectionlayerInit);
            session.updateRenderState({ layers: [glProjLayer] });
            renderer.setPixelRatio(1);
            renderer.setSize(glProjLayer.textureWidth, glProjLayer.textureHeight, false);
            newRenderTarget = new WebGLRenderTarget(
              glProjLayer.textureWidth,
              glProjLayer.textureHeight,
              {
                format: RGBAFormat,
                type: UnsignedByteType,
                depthTexture: new DepthTexture(glProjLayer.textureWidth, glProjLayer.textureHeight, depthType, void 0, void 0, void 0, void 0, void 0, void 0, depthFormat),
                stencilBuffer: attributes.stencil,
                colorSpace: renderer.outputColorSpace,
                samples: attributes.antialias ? 4 : 0
              }
            );
            const renderTargetProperties = renderer.properties.get(newRenderTarget);
            renderTargetProperties.__ignoreDepthValues = glProjLayer.ignoreDepthValues;
          }
          newRenderTarget.isXRRenderTarget = true;
          this.setFoveation(foveation);
          customReferenceSpace = null;
          referenceSpace = await session.requestReferenceSpace(referenceSpaceType);
          animation.setContext(session);
          animation.start();
          scope.isPresenting = true;
          scope.dispatchEvent({ type: "sessionstart" });
        }
      };
      this.getEnvironmentBlendMode = function() {
        if (session !== null) {
          return session.environmentBlendMode;
        }
      };
      function onInputSourcesChange(event) {
        for (let i = 0; i < event.removed.length; i++) {
          const inputSource = event.removed[i];
          const index = controllerInputSources.indexOf(inputSource);
          if (index >= 0) {
            controllerInputSources[index] = null;
            controllers[index].disconnect(inputSource);
          }
        }
        for (let i = 0; i < event.added.length; i++) {
          const inputSource = event.added[i];
          let controllerIndex = controllerInputSources.indexOf(inputSource);
          if (controllerIndex === -1) {
            for (let i2 = 0; i2 < controllers.length; i2++) {
              if (i2 >= controllerInputSources.length) {
                controllerInputSources.push(inputSource);
                controllerIndex = i2;
                break;
              } else if (controllerInputSources[i2] === null) {
                controllerInputSources[i2] = inputSource;
                controllerIndex = i2;
                break;
              }
            }
            if (controllerIndex === -1) break;
          }
          const controller = controllers[controllerIndex];
          if (controller) {
            controller.connect(inputSource);
          }
        }
      }
      const cameraLPos = new Vector3();
      const cameraRPos = new Vector3();
      function setProjectionFromUnion(camera, cameraL2, cameraR2) {
        cameraLPos.setFromMatrixPosition(cameraL2.matrixWorld);
        cameraRPos.setFromMatrixPosition(cameraR2.matrixWorld);
        const ipd = cameraLPos.distanceTo(cameraRPos);
        const projL = cameraL2.projectionMatrix.elements;
        const projR = cameraR2.projectionMatrix.elements;
        const near = projL[14] / (projL[10] - 1);
        const far = projL[14] / (projL[10] + 1);
        const topFov = (projL[9] + 1) / projL[5];
        const bottomFov = (projL[9] - 1) / projL[5];
        const leftFov = (projL[8] - 1) / projL[0];
        const rightFov = (projR[8] + 1) / projR[0];
        const left = near * leftFov;
        const right = near * rightFov;
        const zOffset = ipd / (-leftFov + rightFov);
        const xOffset = zOffset * -leftFov;
        cameraL2.matrixWorld.decompose(camera.position, camera.quaternion, camera.scale);
        camera.translateX(xOffset);
        camera.translateZ(zOffset);
        camera.matrixWorld.compose(camera.position, camera.quaternion, camera.scale);
        camera.matrixWorldInverse.copy(camera.matrixWorld).invert();
        const near2 = near + zOffset;
        const far2 = far + zOffset;
        const left2 = left - xOffset;
        const right2 = right + (ipd - xOffset);
        const top2 = topFov * far / far2 * near2;
        const bottom2 = bottomFov * far / far2 * near2;
        camera.projectionMatrix.makePerspective(left2, right2, top2, bottom2, near2, far2);
        camera.projectionMatrixInverse.copy(camera.projectionMatrix).invert();
      }
      function updateCamera(camera, parent) {
        if (parent === null) {
          camera.matrixWorld.copy(camera.matrix);
        } else {
          camera.matrixWorld.multiplyMatrices(parent.matrixWorld, camera.matrix);
        }
        camera.matrixWorldInverse.copy(camera.matrixWorld).invert();
      }
      this.updateCamera = function(camera) {
        if (session === null) return;
        cameraXR.near = cameraR.near = cameraL.near = camera.near;
        cameraXR.far = cameraR.far = cameraL.far = camera.far;
        if (_currentDepthNear !== cameraXR.near || _currentDepthFar !== cameraXR.far) {
          session.updateRenderState({
            depthNear: cameraXR.near,
            depthFar: cameraXR.far
          });
          _currentDepthNear = cameraXR.near;
          _currentDepthFar = cameraXR.far;
        }
        const parent = camera.parent;
        const cameras2 = cameraXR.cameras;
        updateCamera(cameraXR, parent);
        for (let i = 0; i < cameras2.length; i++) {
          updateCamera(cameras2[i], parent);
        }
        if (cameras2.length === 2) {
          setProjectionFromUnion(cameraXR, cameraL, cameraR);
        } else {
          cameraXR.projectionMatrix.copy(cameraL.projectionMatrix);
        }
        updateUserCamera(camera, cameraXR, parent);
      };
      function updateUserCamera(camera, cameraXR2, parent) {
        if (parent === null) {
          camera.matrix.copy(cameraXR2.matrixWorld);
        } else {
          camera.matrix.copy(parent.matrixWorld);
          camera.matrix.invert();
          camera.matrix.multiply(cameraXR2.matrixWorld);
        }
        camera.matrix.decompose(camera.position, camera.quaternion, camera.scale);
        camera.updateMatrixWorld(true);
        camera.projectionMatrix.copy(cameraXR2.projectionMatrix);
        camera.projectionMatrixInverse.copy(cameraXR2.projectionMatrixInverse);
        if (camera.isPerspectiveCamera) {
          camera.fov = RAD2DEG * 2 * Math.atan(1 / camera.projectionMatrix.elements[5]);
          camera.zoom = 1;
        }
      }
      this.getCamera = function() {
        return cameraXR;
      };
      this.getFoveation = function() {
        if (glProjLayer === null && glBaseLayer === null) {
          return void 0;
        }
        return foveation;
      };
      this.setFoveation = function(value) {
        foveation = value;
        if (glProjLayer !== null) {
          glProjLayer.fixedFoveation = value;
        }
        if (glBaseLayer !== null && glBaseLayer.fixedFoveation !== void 0) {
          glBaseLayer.fixedFoveation = value;
        }
      };
      let onAnimationFrameCallback = null;
      function onAnimationFrame(time, frame) {
        pose = frame.getViewerPose(customReferenceSpace || referenceSpace);
        xrFrame = frame;
        if (pose !== null) {
          const views = pose.views;
          if (glBaseLayer !== null) {
            renderer.setRenderTargetFramebuffer(newRenderTarget, glBaseLayer.framebuffer);
            renderer.setRenderTarget(newRenderTarget);
          }
          let cameraXRNeedsUpdate = false;
          if (views.length !== cameraXR.cameras.length) {
            cameraXR.cameras.length = 0;
            cameraXRNeedsUpdate = true;
          }
          for (let i = 0; i < views.length; i++) {
            const view = views[i];
            let viewport = null;
            if (glBaseLayer !== null) {
              viewport = glBaseLayer.getViewport(view);
            } else {
              const glSubImage = glBinding.getViewSubImage(glProjLayer, view);
              viewport = glSubImage.viewport;
              if (i === 0) {
                renderer.setRenderTargetTextures(
                  newRenderTarget,
                  glSubImage.colorTexture,
                  glProjLayer.ignoreDepthValues ? void 0 : glSubImage.depthStencilTexture
                );
                renderer.setRenderTarget(newRenderTarget);
              }
            }
            let camera = cameras[i];
            if (camera === void 0) {
              camera = new PerspectiveCamera();
              camera.layers.enable(i);
              camera.viewport = new Vector4();
              cameras[i] = camera;
            }
            camera.matrix.fromArray(view.transform.matrix);
            camera.matrix.decompose(camera.position, camera.quaternion, camera.scale);
            camera.projectionMatrix.fromArray(view.projectionMatrix);
            camera.projectionMatrixInverse.copy(camera.projectionMatrix).invert();
            camera.viewport.set(viewport.x, viewport.y, viewport.width, viewport.height);
            if (i === 0) {
              cameraXR.matrix.copy(camera.matrix);
              cameraXR.matrix.decompose(cameraXR.position, cameraXR.quaternion, cameraXR.scale);
            }
            if (cameraXRNeedsUpdate === true) {
              cameraXR.cameras.push(camera);
            }
          }
        }
        for (let i = 0; i < controllers.length; i++) {
          const inputSource = controllerInputSources[i];
          const controller = controllers[i];
          if (inputSource !== null && controller !== void 0) {
            controller.update(inputSource, frame, customReferenceSpace || referenceSpace);
          }
        }
        if (onAnimationFrameCallback) onAnimationFrameCallback(time, frame);
        if (frame.detectedPlanes) {
          scope.dispatchEvent({ type: "planesdetected", data: frame });
        }
        xrFrame = null;
      }
      const animation = new WebGLAnimation();
      animation.setAnimationLoop(onAnimationFrame);
      this.setAnimationLoop = function(callback) {
        onAnimationFrameCallback = callback;
      };
      this.dispose = function() {
      };
    }
  };
  function WebGLMaterials(renderer, properties) {
    function refreshTransformUniform(map, uniform) {
      if (map.matrixAutoUpdate === true) {
        map.updateMatrix();
      }
      uniform.value.copy(map.matrix);
    }
    function refreshFogUniforms(uniforms, fog) {
      fog.color.getRGB(uniforms.fogColor.value, getUnlitUniformColorSpace(renderer));
      if (fog.isFog) {
        uniforms.fogNear.value = fog.near;
        uniforms.fogFar.value = fog.far;
      } else if (fog.isFogExp2) {
        uniforms.fogDensity.value = fog.density;
      }
    }
    function refreshMaterialUniforms(uniforms, material, pixelRatio, height, transmissionRenderTarget) {
      if (material.isMeshBasicMaterial) {
        refreshUniformsCommon(uniforms, material);
      } else if (material.isMeshLambertMaterial) {
        refreshUniformsCommon(uniforms, material);
      } else if (material.isMeshToonMaterial) {
        refreshUniformsCommon(uniforms, material);
        refreshUniformsToon(uniforms, material);
      } else if (material.isMeshPhongMaterial) {
        refreshUniformsCommon(uniforms, material);
        refreshUniformsPhong(uniforms, material);
      } else if (material.isMeshStandardMaterial) {
        refreshUniformsCommon(uniforms, material);
        refreshUniformsStandard(uniforms, material);
        if (material.isMeshPhysicalMaterial) {
          refreshUniformsPhysical(uniforms, material, transmissionRenderTarget);
        }
      } else if (material.isMeshMatcapMaterial) {
        refreshUniformsCommon(uniforms, material);
        refreshUniformsMatcap(uniforms, material);
      } else if (material.isMeshDepthMaterial) {
        refreshUniformsCommon(uniforms, material);
      } else if (material.isMeshDistanceMaterial) {
        refreshUniformsCommon(uniforms, material);
        refreshUniformsDistance(uniforms, material);
      } else if (material.isMeshNormalMaterial) {
        refreshUniformsCommon(uniforms, material);
      } else if (material.isLineBasicMaterial) {
        refreshUniformsLine(uniforms, material);
        if (material.isLineDashedMaterial) {
          refreshUniformsDash(uniforms, material);
        }
      } else if (material.isPointsMaterial) {
        refreshUniformsPoints(uniforms, material, pixelRatio, height);
      } else if (material.isSpriteMaterial) {
        refreshUniformsSprites(uniforms, material);
      } else if (material.isShadowMaterial) {
        uniforms.color.value.copy(material.color);
        uniforms.opacity.value = material.opacity;
      } else if (material.isShaderMaterial) {
        material.uniformsNeedUpdate = false;
      }
    }
    function refreshUniformsCommon(uniforms, material) {
      uniforms.opacity.value = material.opacity;
      if (material.color) {
        uniforms.diffuse.value.copy(material.color);
      }
      if (material.emissive) {
        uniforms.emissive.value.copy(material.emissive).multiplyScalar(material.emissiveIntensity);
      }
      if (material.map) {
        uniforms.map.value = material.map;
        refreshTransformUniform(material.map, uniforms.mapTransform);
      }
      if (material.alphaMap) {
        uniforms.alphaMap.value = material.alphaMap;
        refreshTransformUniform(material.alphaMap, uniforms.alphaMapTransform);
      }
      if (material.bumpMap) {
        uniforms.bumpMap.value = material.bumpMap;
        refreshTransformUniform(material.bumpMap, uniforms.bumpMapTransform);
        uniforms.bumpScale.value = material.bumpScale;
        if (material.side === BackSide) {
          uniforms.bumpScale.value *= -1;
        }
      }
      if (material.normalMap) {
        uniforms.normalMap.value = material.normalMap;
        refreshTransformUniform(material.normalMap, uniforms.normalMapTransform);
        uniforms.normalScale.value.copy(material.normalScale);
        if (material.side === BackSide) {
          uniforms.normalScale.value.negate();
        }
      }
      if (material.displacementMap) {
        uniforms.displacementMap.value = material.displacementMap;
        refreshTransformUniform(material.displacementMap, uniforms.displacementMapTransform);
        uniforms.displacementScale.value = material.displacementScale;
        uniforms.displacementBias.value = material.displacementBias;
      }
      if (material.emissiveMap) {
        uniforms.emissiveMap.value = material.emissiveMap;
        refreshTransformUniform(material.emissiveMap, uniforms.emissiveMapTransform);
      }
      if (material.specularMap) {
        uniforms.specularMap.value = material.specularMap;
        refreshTransformUniform(material.specularMap, uniforms.specularMapTransform);
      }
      if (material.alphaTest > 0) {
        uniforms.alphaTest.value = material.alphaTest;
      }
      const envMap = properties.get(material).envMap;
      if (envMap) {
        uniforms.envMap.value = envMap;
        uniforms.flipEnvMap.value = envMap.isCubeTexture && envMap.isRenderTargetTexture === false ? -1 : 1;
        uniforms.reflectivity.value = material.reflectivity;
        uniforms.ior.value = material.ior;
        uniforms.refractionRatio.value = material.refractionRatio;
      }
      if (material.lightMap) {
        uniforms.lightMap.value = material.lightMap;
        const scaleFactor = renderer._useLegacyLights === true ? Math.PI : 1;
        uniforms.lightMapIntensity.value = material.lightMapIntensity * scaleFactor;
        refreshTransformUniform(material.lightMap, uniforms.lightMapTransform);
      }
      if (material.aoMap) {
        uniforms.aoMap.value = material.aoMap;
        uniforms.aoMapIntensity.value = material.aoMapIntensity;
        refreshTransformUniform(material.aoMap, uniforms.aoMapTransform);
      }
    }
    function refreshUniformsLine(uniforms, material) {
      uniforms.diffuse.value.copy(material.color);
      uniforms.opacity.value = material.opacity;
      if (material.map) {
        uniforms.map.value = material.map;
        refreshTransformUniform(material.map, uniforms.mapTransform);
      }
    }
    function refreshUniformsDash(uniforms, material) {
      uniforms.dashSize.value = material.dashSize;
      uniforms.totalSize.value = material.dashSize + material.gapSize;
      uniforms.scale.value = material.scale;
    }
    function refreshUniformsPoints(uniforms, material, pixelRatio, height) {
      uniforms.diffuse.value.copy(material.color);
      uniforms.opacity.value = material.opacity;
      uniforms.size.value = material.size * pixelRatio;
      uniforms.scale.value = height * 0.5;
      if (material.map) {
        uniforms.map.value = material.map;
        refreshTransformUniform(material.map, uniforms.uvTransform);
      }
      if (material.alphaMap) {
        uniforms.alphaMap.value = material.alphaMap;
        refreshTransformUniform(material.alphaMap, uniforms.alphaMapTransform);
      }
      if (material.alphaTest > 0) {
        uniforms.alphaTest.value = material.alphaTest;
      }
    }
    function refreshUniformsSprites(uniforms, material) {
      uniforms.diffuse.value.copy(material.color);
      uniforms.opacity.value = material.opacity;
      uniforms.rotation.value = material.rotation;
      if (material.map) {
        uniforms.map.value = material.map;
        refreshTransformUniform(material.map, uniforms.mapTransform);
      }
      if (material.alphaMap) {
        uniforms.alphaMap.value = material.alphaMap;
        refreshTransformUniform(material.alphaMap, uniforms.alphaMapTransform);
      }
      if (material.alphaTest > 0) {
        uniforms.alphaTest.value = material.alphaTest;
      }
    }
    function refreshUniformsPhong(uniforms, material) {
      uniforms.specular.value.copy(material.specular);
      uniforms.shininess.value = Math.max(material.shininess, 1e-4);
    }
    function refreshUniformsToon(uniforms, material) {
      if (material.gradientMap) {
        uniforms.gradientMap.value = material.gradientMap;
      }
    }
    function refreshUniformsStandard(uniforms, material) {
      uniforms.metalness.value = material.metalness;
      if (material.metalnessMap) {
        uniforms.metalnessMap.value = material.metalnessMap;
        refreshTransformUniform(material.metalnessMap, uniforms.metalnessMapTransform);
      }
      uniforms.roughness.value = material.roughness;
      if (material.roughnessMap) {
        uniforms.roughnessMap.value = material.roughnessMap;
        refreshTransformUniform(material.roughnessMap, uniforms.roughnessMapTransform);
      }
      const envMap = properties.get(material).envMap;
      if (envMap) {
        uniforms.envMapIntensity.value = material.envMapIntensity;
      }
    }
    function refreshUniformsPhysical(uniforms, material, transmissionRenderTarget) {
      uniforms.ior.value = material.ior;
      if (material.sheen > 0) {
        uniforms.sheenColor.value.copy(material.sheenColor).multiplyScalar(material.sheen);
        uniforms.sheenRoughness.value = material.sheenRoughness;
        if (material.sheenColorMap) {
          uniforms.sheenColorMap.value = material.sheenColorMap;
          refreshTransformUniform(material.sheenColorMap, uniforms.sheenColorMapTransform);
        }
        if (material.sheenRoughnessMap) {
          uniforms.sheenRoughnessMap.value = material.sheenRoughnessMap;
          refreshTransformUniform(material.sheenRoughnessMap, uniforms.sheenRoughnessMapTransform);
        }
      }
      if (material.clearcoat > 0) {
        uniforms.clearcoat.value = material.clearcoat;
        uniforms.clearcoatRoughness.value = material.clearcoatRoughness;
        if (material.clearcoatMap) {
          uniforms.clearcoatMap.value = material.clearcoatMap;
          refreshTransformUniform(material.clearcoatMap, uniforms.clearcoatMapTransform);
        }
        if (material.clearcoatRoughnessMap) {
          uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;
          refreshTransformUniform(material.clearcoatRoughnessMap, uniforms.clearcoatRoughnessMapTransform);
        }
        if (material.clearcoatNormalMap) {
          uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;
          refreshTransformUniform(material.clearcoatNormalMap, uniforms.clearcoatNormalMapTransform);
          uniforms.clearcoatNormalScale.value.copy(material.clearcoatNormalScale);
          if (material.side === BackSide) {
            uniforms.clearcoatNormalScale.value.negate();
          }
        }
      }
      if (material.iridescence > 0) {
        uniforms.iridescence.value = material.iridescence;
        uniforms.iridescenceIOR.value = material.iridescenceIOR;
        uniforms.iridescenceThicknessMinimum.value = material.iridescenceThicknessRange[0];
        uniforms.iridescenceThicknessMaximum.value = material.iridescenceThicknessRange[1];
        if (material.iridescenceMap) {
          uniforms.iridescenceMap.value = material.iridescenceMap;
          refreshTransformUniform(material.iridescenceMap, uniforms.iridescenceMapTransform);
        }
        if (material.iridescenceThicknessMap) {
          uniforms.iridescenceThicknessMap.value = material.iridescenceThicknessMap;
          refreshTransformUniform(material.iridescenceThicknessMap, uniforms.iridescenceThicknessMapTransform);
        }
      }
      if (material.transmission > 0) {
        uniforms.transmission.value = material.transmission;
        uniforms.transmissionSamplerMap.value = transmissionRenderTarget.texture;
        uniforms.transmissionSamplerSize.value.set(transmissionRenderTarget.width, transmissionRenderTarget.height);
        if (material.transmissionMap) {
          uniforms.transmissionMap.value = material.transmissionMap;
          refreshTransformUniform(material.transmissionMap, uniforms.transmissionMapTransform);
        }
        uniforms.thickness.value = material.thickness;
        if (material.thicknessMap) {
          uniforms.thicknessMap.value = material.thicknessMap;
          refreshTransformUniform(material.thicknessMap, uniforms.thicknessMapTransform);
        }
        uniforms.attenuationDistance.value = material.attenuationDistance;
        uniforms.attenuationColor.value.copy(material.attenuationColor);
      }
      if (material.anisotropy > 0) {
        uniforms.anisotropyVector.value.set(material.anisotropy * Math.cos(material.anisotropyRotation), material.anisotropy * Math.sin(material.anisotropyRotation));
        if (material.anisotropyMap) {
          uniforms.anisotropyMap.value = material.anisotropyMap;
          refreshTransformUniform(material.anisotropyMap, uniforms.anisotropyMapTransform);
        }
      }
      uniforms.specularIntensity.value = material.specularIntensity;
      uniforms.specularColor.value.copy(material.specularColor);
      if (material.specularColorMap) {
        uniforms.specularColorMap.value = material.specularColorMap;
        refreshTransformUniform(material.specularColorMap, uniforms.specularColorMapTransform);
      }
      if (material.specularIntensityMap) {
        uniforms.specularIntensityMap.value = material.specularIntensityMap;
        refreshTransformUniform(material.specularIntensityMap, uniforms.specularIntensityMapTransform);
      }
    }
    function refreshUniformsMatcap(uniforms, material) {
      if (material.matcap) {
        uniforms.matcap.value = material.matcap;
      }
    }
    function refreshUniformsDistance(uniforms, material) {
      const light = properties.get(material).light;
      uniforms.referencePosition.value.setFromMatrixPosition(light.matrixWorld);
      uniforms.nearDistance.value = light.shadow.camera.near;
      uniforms.farDistance.value = light.shadow.camera.far;
    }
    return {
      refreshFogUniforms,
      refreshMaterialUniforms
    };
  }
  function WebGLUniformsGroups(gl, info, capabilities, state) {
    let buffers = {};
    let updateList = {};
    let allocatedBindingPoints = [];
    const maxBindingPoints = capabilities.isWebGL2 ? gl.getParameter(gl.MAX_UNIFORM_BUFFER_BINDINGS) : 0;
    function bind(uniformsGroup, program) {
      const webglProgram = program.program;
      state.uniformBlockBinding(uniformsGroup, webglProgram);
    }
    function update(uniformsGroup, program) {
      let buffer = buffers[uniformsGroup.id];
      if (buffer === void 0) {
        prepareUniformsGroup(uniformsGroup);
        buffer = createBuffer(uniformsGroup);
        buffers[uniformsGroup.id] = buffer;
        uniformsGroup.addEventListener("dispose", onUniformsGroupsDispose);
      }
      const webglProgram = program.program;
      state.updateUBOMapping(uniformsGroup, webglProgram);
      const frame = info.render.frame;
      if (updateList[uniformsGroup.id] !== frame) {
        updateBufferData(uniformsGroup);
        updateList[uniformsGroup.id] = frame;
      }
    }
    function createBuffer(uniformsGroup) {
      const bindingPointIndex = allocateBindingPointIndex();
      uniformsGroup.__bindingPointIndex = bindingPointIndex;
      const buffer = gl.createBuffer();
      const size = uniformsGroup.__size;
      const usage = uniformsGroup.usage;
      gl.bindBuffer(gl.UNIFORM_BUFFER, buffer);
      gl.bufferData(gl.UNIFORM_BUFFER, size, usage);
      gl.bindBuffer(gl.UNIFORM_BUFFER, null);
      gl.bindBufferBase(gl.UNIFORM_BUFFER, bindingPointIndex, buffer);
      return buffer;
    }
    function allocateBindingPointIndex() {
      for (let i = 0; i < maxBindingPoints; i++) {
        if (allocatedBindingPoints.indexOf(i) === -1) {
          allocatedBindingPoints.push(i);
          return i;
        }
      }
      console.error("THREE.WebGLRenderer: Maximum number of simultaneously usable uniforms groups reached.");
      return 0;
    }
    function updateBufferData(uniformsGroup) {
      const buffer = buffers[uniformsGroup.id];
      const uniforms = uniformsGroup.uniforms;
      const cache = uniformsGroup.__cache;
      gl.bindBuffer(gl.UNIFORM_BUFFER, buffer);
      for (let i = 0, il = uniforms.length; i < il; i++) {
        const uniformArray = Array.isArray(uniforms[i]) ? uniforms[i] : [uniforms[i]];
        for (let j = 0, jl = uniformArray.length; j < jl; j++) {
          const uniform = uniformArray[j];
          if (hasUniformChanged(uniform, i, j, cache) === true) {
            const offset = uniform.__offset;
            const values = Array.isArray(uniform.value) ? uniform.value : [uniform.value];
            let arrayOffset = 0;
            for (let k = 0; k < values.length; k++) {
              const value = values[k];
              const info2 = getUniformSize(value);
              if (typeof value === "number" || typeof value === "boolean") {
                uniform.__data[0] = value;
                gl.bufferSubData(gl.UNIFORM_BUFFER, offset + arrayOffset, uniform.__data);
              } else if (value.isMatrix3) {
                uniform.__data[0] = value.elements[0];
                uniform.__data[1] = value.elements[1];
                uniform.__data[2] = value.elements[2];
                uniform.__data[3] = 0;
                uniform.__data[4] = value.elements[3];
                uniform.__data[5] = value.elements[4];
                uniform.__data[6] = value.elements[5];
                uniform.__data[7] = 0;
                uniform.__data[8] = value.elements[6];
                uniform.__data[9] = value.elements[7];
                uniform.__data[10] = value.elements[8];
                uniform.__data[11] = 0;
              } else {
                value.toArray(uniform.__data, arrayOffset);
                arrayOffset += info2.storage / Float32Array.BYTES_PER_ELEMENT;
              }
            }
            gl.bufferSubData(gl.UNIFORM_BUFFER, offset, uniform.__data);
          }
        }
      }
      gl.bindBuffer(gl.UNIFORM_BUFFER, null);
    }
    function hasUniformChanged(uniform, index, indexArray, cache) {
      const value = uniform.value;
      const indexString = index + "_" + indexArray;
      if (cache[indexString] === void 0) {
        if (typeof value === "number" || typeof value === "boolean") {
          cache[indexString] = value;
        } else {
          cache[indexString] = value.clone();
        }
        return true;
      } else {
        const cachedObject = cache[indexString];
        if (typeof value === "number" || typeof value === "boolean") {
          if (cachedObject !== value) {
            cache[indexString] = value;
            return true;
          }
        } else {
          if (cachedObject.equals(value) === false) {
            cachedObject.copy(value);
            return true;
          }
        }
      }
      return false;
    }
    function prepareUniformsGroup(uniformsGroup) {
      const uniforms = uniformsGroup.uniforms;
      let offset = 0;
      const chunkSize = 16;
      for (let i = 0, l = uniforms.length; i < l; i++) {
        const uniformArray = Array.isArray(uniforms[i]) ? uniforms[i] : [uniforms[i]];
        for (let j = 0, jl = uniformArray.length; j < jl; j++) {
          const uniform = uniformArray[j];
          const values = Array.isArray(uniform.value) ? uniform.value : [uniform.value];
          for (let k = 0, kl = values.length; k < kl; k++) {
            const value = values[k];
            const info2 = getUniformSize(value);
            const chunkOffsetUniform = offset % chunkSize;
            if (chunkOffsetUniform !== 0 && chunkSize - chunkOffsetUniform < info2.boundary) {
              offset += chunkSize - chunkOffsetUniform;
            }
            uniform.__data = new Float32Array(info2.storage / Float32Array.BYTES_PER_ELEMENT);
            uniform.__offset = offset;
            offset += info2.storage;
          }
        }
      }
      const chunkOffset = offset % chunkSize;
      if (chunkOffset > 0) offset += chunkSize - chunkOffset;
      uniformsGroup.__size = offset;
      uniformsGroup.__cache = {};
      return this;
    }
    function getUniformSize(value) {
      const info2 = {
        boundary: 0,
        // bytes
        storage: 0
        // bytes
      };
      if (typeof value === "number" || typeof value === "boolean") {
        info2.boundary = 4;
        info2.storage = 4;
      } else if (value.isVector2) {
        info2.boundary = 8;
        info2.storage = 8;
      } else if (value.isVector3 || value.isColor) {
        info2.boundary = 16;
        info2.storage = 12;
      } else if (value.isVector4) {
        info2.boundary = 16;
        info2.storage = 16;
      } else if (value.isMatrix3) {
        info2.boundary = 48;
        info2.storage = 48;
      } else if (value.isMatrix4) {
        info2.boundary = 64;
        info2.storage = 64;
      } else if (value.isTexture) {
        console.warn("THREE.WebGLRenderer: Texture samplers can not be part of an uniforms group.");
      } else {
        console.warn("THREE.WebGLRenderer: Unsupported uniform value type.", value);
      }
      return info2;
    }
    function onUniformsGroupsDispose(event) {
      const uniformsGroup = event.target;
      uniformsGroup.removeEventListener("dispose", onUniformsGroupsDispose);
      const index = allocatedBindingPoints.indexOf(uniformsGroup.__bindingPointIndex);
      allocatedBindingPoints.splice(index, 1);
      gl.deleteBuffer(buffers[uniformsGroup.id]);
      delete buffers[uniformsGroup.id];
      delete updateList[uniformsGroup.id];
    }
    function dispose() {
      for (const id in buffers) {
        gl.deleteBuffer(buffers[id]);
      }
      allocatedBindingPoints = [];
      buffers = {};
      updateList = {};
    }
    return {
      bind,
      update,
      dispose
    };
  }
  var WebGLRenderer = class {
    constructor(parameters = {}) {
      const {
        canvas = createCanvasElement(),
        context = null,
        depth = true,
        stencil = true,
        alpha = false,
        antialias = false,
        premultipliedAlpha = true,
        preserveDrawingBuffer = false,
        powerPreference = "default",
        failIfMajorPerformanceCaveat = false
      } = parameters;
      this.isWebGLRenderer = true;
      let _alpha;
      if (context !== null) {
        _alpha = context.getContextAttributes().alpha;
      } else {
        _alpha = alpha;
      }
      const uintClearColor = new Uint32Array(4);
      const intClearColor = new Int32Array(4);
      let currentRenderList = null;
      let currentRenderState = null;
      const renderListStack = [];
      const renderStateStack = [];
      this.domElement = canvas;
      this.debug = {
        /**
         * Enables error checking and reporting when shader programs are being compiled
         * @type {boolean}
         */
        checkShaderErrors: true,
        /**
         * Callback for custom error reporting.
         * @type {?Function}
         */
        onShaderError: null
      };
      this.autoClear = true;
      this.autoClearColor = true;
      this.autoClearDepth = true;
      this.autoClearStencil = true;
      this.sortObjects = true;
      this.clippingPlanes = [];
      this.localClippingEnabled = false;
      this._outputColorSpace = SRGBColorSpace;
      this._useLegacyLights = false;
      this.toneMapping = NoToneMapping;
      this.toneMappingExposure = 1;
      const _this = this;
      let _isContextLost = false;
      let _currentActiveCubeFace = 0;
      let _currentActiveMipmapLevel = 0;
      let _currentRenderTarget = null;
      let _currentMaterialId = -1;
      let _currentCamera = null;
      const _currentViewport = new Vector4();
      const _currentScissor = new Vector4();
      let _currentScissorTest = null;
      const _currentClearColor = new Color(0);
      let _currentClearAlpha = 0;
      let _width = canvas.width;
      let _height = canvas.height;
      let _pixelRatio = 1;
      let _opaqueSort = null;
      let _transparentSort = null;
      const _viewport = new Vector4(0, 0, _width, _height);
      const _scissor = new Vector4(0, 0, _width, _height);
      let _scissorTest = false;
      const _frustum2 = new Frustum();
      let _clippingEnabled = false;
      let _localClippingEnabled = false;
      let _transmissionRenderTarget = null;
      const _projScreenMatrix2 = new Matrix4();
      const _vector22 = new Vector2();
      const _vector32 = new Vector3();
      const _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };
      function getTargetPixelRatio() {
        return _currentRenderTarget === null ? _pixelRatio : 1;
      }
      let _gl = context;
      function getContext(contextNames, contextAttributes) {
        for (let i = 0; i < contextNames.length; i++) {
          const contextName = contextNames[i];
          const context2 = canvas.getContext(contextName, contextAttributes);
          if (context2 !== null) return context2;
        }
        return null;
      }
      try {
        const contextAttributes = {
          alpha: true,
          depth,
          stencil,
          antialias,
          premultipliedAlpha,
          preserveDrawingBuffer,
          powerPreference,
          failIfMajorPerformanceCaveat
        };
        if ("setAttribute" in canvas) canvas.setAttribute("data-engine", `three.js r${REVISION}`);
        canvas.addEventListener("webglcontextlost", onContextLost, false);
        canvas.addEventListener("webglcontextrestored", onContextRestore, false);
        canvas.addEventListener("webglcontextcreationerror", onContextCreationError, false);
        if (_gl === null) {
          const contextNames = ["webgl2", "webgl", "experimental-webgl"];
          if (_this.isWebGL1Renderer === true) {
            contextNames.shift();
          }
          _gl = getContext(contextNames, contextAttributes);
          if (_gl === null) {
            if (getContext(contextNames)) {
              throw new Error("Error creating WebGL context with your selected attributes.");
            } else {
              throw new Error("Error creating WebGL context.");
            }
          }
        }
        if (typeof WebGLRenderingContext !== "undefined" && _gl instanceof WebGLRenderingContext) {
          console.warn("THREE.WebGLRenderer: WebGL 1 support was deprecated in r153 and will be removed in r163.");
        }
        if (_gl.getShaderPrecisionFormat === void 0) {
          _gl.getShaderPrecisionFormat = function() {
            return { "rangeMin": 1, "rangeMax": 1, "precision": 1 };
          };
        }
      } catch (error) {
        console.error("THREE.WebGLRenderer: " + error.message);
        throw error;
      }
      let extensions, capabilities, state, info;
      let properties, textures, cubemaps, cubeuvmaps, attributes, geometries, objects;
      let programCache, materials, renderLists, renderStates, clipping, shadowMap;
      let background, morphtargets, bufferRenderer, indexedBufferRenderer;
      let utils, bindingStates, uniformsGroups;
      function initGLContext() {
        extensions = new WebGLExtensions(_gl);
        capabilities = new WebGLCapabilities(_gl, extensions, parameters);
        extensions.init(capabilities);
        utils = new WebGLUtils(_gl, extensions, capabilities);
        state = new WebGLState(_gl, extensions, capabilities);
        info = new WebGLInfo(_gl);
        properties = new WebGLProperties();
        textures = new WebGLTextures(_gl, extensions, state, properties, capabilities, utils, info);
        cubemaps = new WebGLCubeMaps(_this);
        cubeuvmaps = new WebGLCubeUVMaps(_this);
        attributes = new WebGLAttributes(_gl, capabilities);
        bindingStates = new WebGLBindingStates(_gl, extensions, attributes, capabilities);
        geometries = new WebGLGeometries(_gl, attributes, info, bindingStates);
        objects = new WebGLObjects(_gl, geometries, attributes, info);
        morphtargets = new WebGLMorphtargets(_gl, capabilities, textures);
        clipping = new WebGLClipping(properties);
        programCache = new WebGLPrograms(_this, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping);
        materials = new WebGLMaterials(_this, properties);
        renderLists = new WebGLRenderLists();
        renderStates = new WebGLRenderStates(extensions, capabilities);
        background = new WebGLBackground(_this, cubemaps, cubeuvmaps, state, objects, _alpha, premultipliedAlpha);
        shadowMap = new WebGLShadowMap(_this, objects, capabilities);
        uniformsGroups = new WebGLUniformsGroups(_gl, info, capabilities, state);
        bufferRenderer = new WebGLBufferRenderer(_gl, extensions, info, capabilities);
        indexedBufferRenderer = new WebGLIndexedBufferRenderer(_gl, extensions, info, capabilities);
        info.programs = programCache.programs;
        _this.capabilities = capabilities;
        _this.extensions = extensions;
        _this.properties = properties;
        _this.renderLists = renderLists;
        _this.shadowMap = shadowMap;
        _this.state = state;
        _this.info = info;
      }
      initGLContext();
      const xr = new WebXRManager(_this, _gl);
      this.xr = xr;
      this.getContext = function() {
        return _gl;
      };
      this.getContextAttributes = function() {
        return _gl.getContextAttributes();
      };
      this.forceContextLoss = function() {
        const extension = extensions.get("WEBGL_lose_context");
        if (extension) extension.loseContext();
      };
      this.forceContextRestore = function() {
        const extension = extensions.get("WEBGL_lose_context");
        if (extension) extension.restoreContext();
      };
      this.getPixelRatio = function() {
        return _pixelRatio;
      };
      this.setPixelRatio = function(value) {
        if (value === void 0) return;
        _pixelRatio = value;
        this.setSize(_width, _height, false);
      };
      this.getSize = function(target) {
        return target.set(_width, _height);
      };
      this.setSize = function(width, height, updateStyle = true) {
        if (xr.isPresenting) {
          console.warn("THREE.WebGLRenderer: Can't change size while VR device is presenting.");
          return;
        }
        _width = width;
        _height = height;
        canvas.width = Math.floor(width * _pixelRatio);
        canvas.height = Math.floor(height * _pixelRatio);
        if (updateStyle === true) {
          canvas.style.width = width + "px";
          canvas.style.height = height + "px";
        }
        this.setViewport(0, 0, width, height);
      };
      this.getDrawingBufferSize = function(target) {
        return target.set(_width * _pixelRatio, _height * _pixelRatio).floor();
      };
      this.setDrawingBufferSize = function(width, height, pixelRatio) {
        _width = width;
        _height = height;
        _pixelRatio = pixelRatio;
        canvas.width = Math.floor(width * pixelRatio);
        canvas.height = Math.floor(height * pixelRatio);
        this.setViewport(0, 0, width, height);
      };
      this.getCurrentViewport = function(target) {
        return target.copy(_currentViewport);
      };
      this.getViewport = function(target) {
        return target.copy(_viewport);
      };
      this.setViewport = function(x, y, width, height) {
        if (x.isVector4) {
          _viewport.set(x.x, x.y, x.z, x.w);
        } else {
          _viewport.set(x, y, width, height);
        }
        state.viewport(_currentViewport.copy(_viewport).multiplyScalar(_pixelRatio).floor());
      };
      this.getScissor = function(target) {
        return target.copy(_scissor);
      };
      this.setScissor = function(x, y, width, height) {
        if (x.isVector4) {
          _scissor.set(x.x, x.y, x.z, x.w);
        } else {
          _scissor.set(x, y, width, height);
        }
        state.scissor(_currentScissor.copy(_scissor).multiplyScalar(_pixelRatio).floor());
      };
      this.getScissorTest = function() {
        return _scissorTest;
      };
      this.setScissorTest = function(boolean) {
        state.setScissorTest(_scissorTest = boolean);
      };
      this.setOpaqueSort = function(method) {
        _opaqueSort = method;
      };
      this.setTransparentSort = function(method) {
        _transparentSort = method;
      };
      this.getClearColor = function(target) {
        return target.copy(background.getClearColor());
      };
      this.setClearColor = function() {
        background.setClearColor.apply(background, arguments);
      };
      this.getClearAlpha = function() {
        return background.getClearAlpha();
      };
      this.setClearAlpha = function() {
        background.setClearAlpha.apply(background, arguments);
      };
      this.clear = function(color = true, depth2 = true, stencil2 = true) {
        let bits2 = 0;
        if (color) {
          let isIntegerFormat = false;
          if (_currentRenderTarget !== null) {
            const targetFormat = _currentRenderTarget.texture.format;
            isIntegerFormat = targetFormat === RGBAIntegerFormat || targetFormat === RGIntegerFormat || targetFormat === RedIntegerFormat;
          }
          if (isIntegerFormat) {
            const targetType = _currentRenderTarget.texture.type;
            const isUnsignedType = targetType === UnsignedByteType || targetType === UnsignedIntType || targetType === UnsignedShortType || targetType === UnsignedInt248Type || targetType === UnsignedShort4444Type || targetType === UnsignedShort5551Type;
            const clearColor = background.getClearColor();
            const a = background.getClearAlpha();
            const r = clearColor.r;
            const g = clearColor.g;
            const b = clearColor.b;
            if (isUnsignedType) {
              uintClearColor[0] = r;
              uintClearColor[1] = g;
              uintClearColor[2] = b;
              uintClearColor[3] = a;
              _gl.clearBufferuiv(_gl.COLOR, 0, uintClearColor);
            } else {
              intClearColor[0] = r;
              intClearColor[1] = g;
              intClearColor[2] = b;
              intClearColor[3] = a;
              _gl.clearBufferiv(_gl.COLOR, 0, intClearColor);
            }
          } else {
            bits2 |= _gl.COLOR_BUFFER_BIT;
          }
        }
        if (depth2) bits2 |= _gl.DEPTH_BUFFER_BIT;
        if (stencil2) {
          bits2 |= _gl.STENCIL_BUFFER_BIT;
          this.state.buffers.stencil.setMask(4294967295);
        }
        _gl.clear(bits2);
      };
      this.clearColor = function() {
        this.clear(true, false, false);
      };
      this.clearDepth = function() {
        this.clear(false, true, false);
      };
      this.clearStencil = function() {
        this.clear(false, false, true);
      };
      this.dispose = function() {
        canvas.removeEventListener("webglcontextlost", onContextLost, false);
        canvas.removeEventListener("webglcontextrestored", onContextRestore, false);
        canvas.removeEventListener("webglcontextcreationerror", onContextCreationError, false);
        renderLists.dispose();
        renderStates.dispose();
        properties.dispose();
        cubemaps.dispose();
        cubeuvmaps.dispose();
        objects.dispose();
        bindingStates.dispose();
        uniformsGroups.dispose();
        programCache.dispose();
        xr.dispose();
        xr.removeEventListener("sessionstart", onXRSessionStart);
        xr.removeEventListener("sessionend", onXRSessionEnd);
        if (_transmissionRenderTarget) {
          _transmissionRenderTarget.dispose();
          _transmissionRenderTarget = null;
        }
        animation.stop();
      };
      function onContextLost(event) {
        event.preventDefault();
        console.log("THREE.WebGLRenderer: Context Lost.");
        _isContextLost = true;
      }
      function onContextRestore() {
        console.log("THREE.WebGLRenderer: Context Restored.");
        _isContextLost = false;
        const infoAutoReset = info.autoReset;
        const shadowMapEnabled = shadowMap.enabled;
        const shadowMapAutoUpdate = shadowMap.autoUpdate;
        const shadowMapNeedsUpdate = shadowMap.needsUpdate;
        const shadowMapType = shadowMap.type;
        initGLContext();
        info.autoReset = infoAutoReset;
        shadowMap.enabled = shadowMapEnabled;
        shadowMap.autoUpdate = shadowMapAutoUpdate;
        shadowMap.needsUpdate = shadowMapNeedsUpdate;
        shadowMap.type = shadowMapType;
      }
      function onContextCreationError(event) {
        console.error("THREE.WebGLRenderer: A WebGL context could not be created. Reason: ", event.statusMessage);
      }
      function onMaterialDispose(event) {
        const material = event.target;
        material.removeEventListener("dispose", onMaterialDispose);
        deallocateMaterial(material);
      }
      function deallocateMaterial(material) {
        releaseMaterialProgramReferences(material);
        properties.remove(material);
      }
      function releaseMaterialProgramReferences(material) {
        const programs = properties.get(material).programs;
        if (programs !== void 0) {
          programs.forEach(function(program) {
            programCache.releaseProgram(program);
          });
          if (material.isShaderMaterial) {
            programCache.releaseShaderCache(material);
          }
        }
      }
      this.renderBufferDirect = function(camera, scene, geometry, material, object, group) {
        if (scene === null) scene = _emptyScene;
        const frontFaceCW = object.isMesh && object.matrixWorld.determinant() < 0;
        const program = setProgram(camera, scene, geometry, material, object);
        state.setMaterial(material, frontFaceCW);
        let index = geometry.index;
        let rangeFactor = 1;
        if (material.wireframe === true) {
          index = geometries.getWireframeAttribute(geometry);
          if (index === void 0) return;
          rangeFactor = 2;
        }
        const drawRange = geometry.drawRange;
        const position = geometry.attributes.position;
        let drawStart = drawRange.start * rangeFactor;
        let drawEnd = (drawRange.start + drawRange.count) * rangeFactor;
        if (group !== null) {
          drawStart = Math.max(drawStart, group.start * rangeFactor);
          drawEnd = Math.min(drawEnd, (group.start + group.count) * rangeFactor);
        }
        if (index !== null) {
          drawStart = Math.max(drawStart, 0);
          drawEnd = Math.min(drawEnd, index.count);
        } else if (position !== void 0 && position !== null) {
          drawStart = Math.max(drawStart, 0);
          drawEnd = Math.min(drawEnd, position.count);
        }
        const drawCount = drawEnd - drawStart;
        if (drawCount < 0 || drawCount === Infinity) return;
        bindingStates.setup(object, material, program, geometry, index);
        let attribute;
        let renderer = bufferRenderer;
        if (index !== null) {
          attribute = attributes.get(index);
          renderer = indexedBufferRenderer;
          renderer.setIndex(attribute);
        }
        if (object.isMesh) {
          if (material.wireframe === true) {
            state.setLineWidth(material.wireframeLinewidth * getTargetPixelRatio());
            renderer.setMode(_gl.LINES);
          } else {
            renderer.setMode(_gl.TRIANGLES);
          }
        } else if (object.isLine) {
          let lineWidth = material.linewidth;
          if (lineWidth === void 0) lineWidth = 1;
          state.setLineWidth(lineWidth * getTargetPixelRatio());
          if (object.isLineSegments) {
            renderer.setMode(_gl.LINES);
          } else if (object.isLineLoop) {
            renderer.setMode(_gl.LINE_LOOP);
          } else {
            renderer.setMode(_gl.LINE_STRIP);
          }
        } else if (object.isPoints) {
          renderer.setMode(_gl.POINTS);
        } else if (object.isSprite) {
          renderer.setMode(_gl.TRIANGLES);
        }
        if (object.isBatchedMesh) {
          renderer.renderMultiDraw(object._multiDrawStarts, object._multiDrawCounts, object._multiDrawCount);
        } else if (object.isInstancedMesh) {
          renderer.renderInstances(drawStart, drawCount, object.count);
        } else if (geometry.isInstancedBufferGeometry) {
          const maxInstanceCount = geometry._maxInstanceCount !== void 0 ? geometry._maxInstanceCount : Infinity;
          const instanceCount = Math.min(geometry.instanceCount, maxInstanceCount);
          renderer.renderInstances(drawStart, drawCount, instanceCount);
        } else {
          renderer.render(drawStart, drawCount);
        }
      };
      function prepareMaterial(material, scene, object) {
        if (material.transparent === true && material.side === DoubleSide && material.forceSinglePass === false) {
          material.side = BackSide;
          material.needsUpdate = true;
          getProgram(material, scene, object);
          material.side = FrontSide;
          material.needsUpdate = true;
          getProgram(material, scene, object);
          material.side = DoubleSide;
        } else {
          getProgram(material, scene, object);
        }
      }
      this.compile = function(scene, camera, targetScene = null) {
        if (targetScene === null) targetScene = scene;
        currentRenderState = renderStates.get(targetScene);
        currentRenderState.init();
        renderStateStack.push(currentRenderState);
        targetScene.traverseVisible(function(object) {
          if (object.isLight && object.layers.test(camera.layers)) {
            currentRenderState.pushLight(object);
            if (object.castShadow) {
              currentRenderState.pushShadow(object);
            }
          }
        });
        if (scene !== targetScene) {
          scene.traverseVisible(function(object) {
            if (object.isLight && object.layers.test(camera.layers)) {
              currentRenderState.pushLight(object);
              if (object.castShadow) {
                currentRenderState.pushShadow(object);
              }
            }
          });
        }
        currentRenderState.setupLights(_this._useLegacyLights);
        const materials2 = /* @__PURE__ */ new Set();
        scene.traverse(function(object) {
          const material = object.material;
          if (material) {
            if (Array.isArray(material)) {
              for (let i = 0; i < material.length; i++) {
                const material2 = material[i];
                prepareMaterial(material2, targetScene, object);
                materials2.add(material2);
              }
            } else {
              prepareMaterial(material, targetScene, object);
              materials2.add(material);
            }
          }
        });
        renderStateStack.pop();
        currentRenderState = null;
        return materials2;
      };
      this.compileAsync = function(scene, camera, targetScene = null) {
        const materials2 = this.compile(scene, camera, targetScene);
        return new Promise((resolve) => {
          function checkMaterialsReady() {
            materials2.forEach(function(material) {
              const materialProperties = properties.get(material);
              const program = materialProperties.currentProgram;
              if (program.isReady()) {
                materials2.delete(material);
              }
            });
            if (materials2.size === 0) {
              resolve(scene);
              return;
            }
            setTimeout(checkMaterialsReady, 10);
          }
          if (extensions.get("KHR_parallel_shader_compile") !== null) {
            checkMaterialsReady();
          } else {
            setTimeout(checkMaterialsReady, 10);
          }
        });
      };
      let onAnimationFrameCallback = null;
      function onAnimationFrame(time) {
        if (onAnimationFrameCallback) onAnimationFrameCallback(time);
      }
      function onXRSessionStart() {
        animation.stop();
      }
      function onXRSessionEnd() {
        animation.start();
      }
      const animation = new WebGLAnimation();
      animation.setAnimationLoop(onAnimationFrame);
      if (typeof self !== "undefined") animation.setContext(self);
      this.setAnimationLoop = function(callback) {
        onAnimationFrameCallback = callback;
        xr.setAnimationLoop(callback);
        callback === null ? animation.stop() : animation.start();
      };
      xr.addEventListener("sessionstart", onXRSessionStart);
      xr.addEventListener("sessionend", onXRSessionEnd);
      this.render = function(scene, camera) {
        if (camera !== void 0 && camera.isCamera !== true) {
          console.error("THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.");
          return;
        }
        if (_isContextLost === true) return;
        if (scene.matrixWorldAutoUpdate === true) scene.updateMatrixWorld();
        if (camera.parent === null && camera.matrixWorldAutoUpdate === true) camera.updateMatrixWorld();
        if (xr.enabled === true && xr.isPresenting === true) {
          if (xr.cameraAutoUpdate === true) xr.updateCamera(camera);
          camera = xr.getCamera();
        }
        if (scene.isScene === true) scene.onBeforeRender(_this, scene, camera, _currentRenderTarget);
        currentRenderState = renderStates.get(scene, renderStateStack.length);
        currentRenderState.init();
        renderStateStack.push(currentRenderState);
        _projScreenMatrix2.multiplyMatrices(camera.projectionMatrix, camera.matrixWorldInverse);
        _frustum2.setFromProjectionMatrix(_projScreenMatrix2);
        _localClippingEnabled = this.localClippingEnabled;
        _clippingEnabled = clipping.init(this.clippingPlanes, _localClippingEnabled);
        currentRenderList = renderLists.get(scene, renderListStack.length);
        currentRenderList.init();
        renderListStack.push(currentRenderList);
        projectObject(scene, camera, 0, _this.sortObjects);
        currentRenderList.finish();
        if (_this.sortObjects === true) {
          currentRenderList.sort(_opaqueSort, _transparentSort);
        }
        this.info.render.frame++;
        if (_clippingEnabled === true) clipping.beginShadows();
        const shadowsArray = currentRenderState.state.shadowsArray;
        shadowMap.render(shadowsArray, scene, camera);
        if (_clippingEnabled === true) clipping.endShadows();
        if (this.info.autoReset === true) this.info.reset();
        background.render(currentRenderList, scene);
        currentRenderState.setupLights(_this._useLegacyLights);
        if (camera.isArrayCamera) {
          const cameras = camera.cameras;
          for (let i = 0, l = cameras.length; i < l; i++) {
            const camera2 = cameras[i];
            renderScene(currentRenderList, scene, camera2, camera2.viewport);
          }
        } else {
          renderScene(currentRenderList, scene, camera);
        }
        if (_currentRenderTarget !== null) {
          textures.updateMultisampleRenderTarget(_currentRenderTarget);
          textures.updateRenderTargetMipmap(_currentRenderTarget);
        }
        if (scene.isScene === true) scene.onAfterRender(_this, scene, camera);
        bindingStates.resetDefaultState();
        _currentMaterialId = -1;
        _currentCamera = null;
        renderStateStack.pop();
        if (renderStateStack.length > 0) {
          currentRenderState = renderStateStack[renderStateStack.length - 1];
        } else {
          currentRenderState = null;
        }
        renderListStack.pop();
        if (renderListStack.length > 0) {
          currentRenderList = renderListStack[renderListStack.length - 1];
        } else {
          currentRenderList = null;
        }
      };
      function projectObject(object, camera, groupOrder, sortObjects) {
        if (object.visible === false) return;
        const visible = object.layers.test(camera.layers);
        if (visible) {
          if (object.isGroup) {
            groupOrder = object.renderOrder;
          } else if (object.isLOD) {
            if (object.autoUpdate === true) object.update(camera);
          } else if (object.isLight) {
            currentRenderState.pushLight(object);
            if (object.castShadow) {
              currentRenderState.pushShadow(object);
            }
          } else if (object.isSprite) {
            if (!object.frustumCulled || _frustum2.intersectsSprite(object)) {
              if (sortObjects) {
                _vector32.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix2);
              }
              const geometry = objects.update(object);
              const material = object.material;
              if (material.visible) {
                currentRenderList.push(object, geometry, material, groupOrder, _vector32.z, null);
              }
            }
          } else if (object.isMesh || object.isLine || object.isPoints) {
            if (!object.frustumCulled || _frustum2.intersectsObject(object)) {
              const geometry = objects.update(object);
              const material = object.material;
              if (sortObjects) {
                if (object.boundingSphere !== void 0) {
                  if (object.boundingSphere === null) object.computeBoundingSphere();
                  _vector32.copy(object.boundingSphere.center);
                } else {
                  if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
                  _vector32.copy(geometry.boundingSphere.center);
                }
                _vector32.applyMatrix4(object.matrixWorld).applyMatrix4(_projScreenMatrix2);
              }
              if (Array.isArray(material)) {
                const groups = geometry.groups;
                for (let i = 0, l = groups.length; i < l; i++) {
                  const group = groups[i];
                  const groupMaterial = material[group.materialIndex];
                  if (groupMaterial && groupMaterial.visible) {
                    currentRenderList.push(object, geometry, groupMaterial, groupOrder, _vector32.z, group);
                  }
                }
              } else if (material.visible) {
                currentRenderList.push(object, geometry, material, groupOrder, _vector32.z, null);
              }
            }
          }
        }
        const children = object.children;
        for (let i = 0, l = children.length; i < l; i++) {
          projectObject(children[i], camera, groupOrder, sortObjects);
        }
      }
      function renderScene(currentRenderList2, scene, camera, viewport) {
        const opaqueObjects = currentRenderList2.opaque;
        const transmissiveObjects = currentRenderList2.transmissive;
        const transparentObjects = currentRenderList2.transparent;
        currentRenderState.setupLightsView(camera);
        if (_clippingEnabled === true) clipping.setGlobalState(_this.clippingPlanes, camera);
        if (transmissiveObjects.length > 0) renderTransmissionPass(opaqueObjects, transmissiveObjects, scene, camera);
        if (viewport) state.viewport(_currentViewport.copy(viewport));
        if (opaqueObjects.length > 0) renderObjects(opaqueObjects, scene, camera);
        if (transmissiveObjects.length > 0) renderObjects(transmissiveObjects, scene, camera);
        if (transparentObjects.length > 0) renderObjects(transparentObjects, scene, camera);
        state.buffers.depth.setTest(true);
        state.buffers.depth.setMask(true);
        state.buffers.color.setMask(true);
        state.setPolygonOffset(false);
      }
      function renderTransmissionPass(opaqueObjects, transmissiveObjects, scene, camera) {
        const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;
        if (overrideMaterial !== null) {
          return;
        }
        const isWebGL2 = capabilities.isWebGL2;
        if (_transmissionRenderTarget === null) {
          _transmissionRenderTarget = new WebGLRenderTarget(1, 1, {
            generateMipmaps: true,
            type: extensions.has("EXT_color_buffer_half_float") ? HalfFloatType : UnsignedByteType,
            minFilter: LinearMipmapLinearFilter,
            samples: isWebGL2 ? 4 : 0
          });
        }
        _this.getDrawingBufferSize(_vector22);
        if (isWebGL2) {
          _transmissionRenderTarget.setSize(_vector22.x, _vector22.y);
        } else {
          _transmissionRenderTarget.setSize(floorPowerOfTwo(_vector22.x), floorPowerOfTwo(_vector22.y));
        }
        const currentRenderTarget = _this.getRenderTarget();
        _this.setRenderTarget(_transmissionRenderTarget);
        _this.getClearColor(_currentClearColor);
        _currentClearAlpha = _this.getClearAlpha();
        if (_currentClearAlpha < 1) _this.setClearColor(16777215, 0.5);
        _this.clear();
        const currentToneMapping = _this.toneMapping;
        _this.toneMapping = NoToneMapping;
        renderObjects(opaqueObjects, scene, camera);
        textures.updateMultisampleRenderTarget(_transmissionRenderTarget);
        textures.updateRenderTargetMipmap(_transmissionRenderTarget);
        let renderTargetNeedsUpdate = false;
        for (let i = 0, l = transmissiveObjects.length; i < l; i++) {
          const renderItem = transmissiveObjects[i];
          const object = renderItem.object;
          const geometry = renderItem.geometry;
          const material = renderItem.material;
          const group = renderItem.group;
          if (material.side === DoubleSide && object.layers.test(camera.layers)) {
            const currentSide = material.side;
            material.side = BackSide;
            material.needsUpdate = true;
            renderObject(object, scene, camera, geometry, material, group);
            material.side = currentSide;
            material.needsUpdate = true;
            renderTargetNeedsUpdate = true;
          }
        }
        if (renderTargetNeedsUpdate === true) {
          textures.updateMultisampleRenderTarget(_transmissionRenderTarget);
          textures.updateRenderTargetMipmap(_transmissionRenderTarget);
        }
        _this.setRenderTarget(currentRenderTarget);
        _this.setClearColor(_currentClearColor, _currentClearAlpha);
        _this.toneMapping = currentToneMapping;
      }
      function renderObjects(renderList, scene, camera) {
        const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;
        for (let i = 0, l = renderList.length; i < l; i++) {
          const renderItem = renderList[i];
          const object = renderItem.object;
          const geometry = renderItem.geometry;
          const material = overrideMaterial === null ? renderItem.material : overrideMaterial;
          const group = renderItem.group;
          if (object.layers.test(camera.layers)) {
            renderObject(object, scene, camera, geometry, material, group);
          }
        }
      }
      function renderObject(object, scene, camera, geometry, material, group) {
        object.onBeforeRender(_this, scene, camera, geometry, material, group);
        object.modelViewMatrix.multiplyMatrices(camera.matrixWorldInverse, object.matrixWorld);
        object.normalMatrix.getNormalMatrix(object.modelViewMatrix);
        material.onBeforeRender(_this, scene, camera, geometry, object, group);
        if (material.transparent === true && material.side === DoubleSide && material.forceSinglePass === false) {
          material.side = BackSide;
          material.needsUpdate = true;
          _this.renderBufferDirect(camera, scene, geometry, material, object, group);
          material.side = FrontSide;
          material.needsUpdate = true;
          _this.renderBufferDirect(camera, scene, geometry, material, object, group);
          material.side = DoubleSide;
        } else {
          _this.renderBufferDirect(camera, scene, geometry, material, object, group);
        }
        object.onAfterRender(_this, scene, camera, geometry, material, group);
      }
      function getProgram(material, scene, object) {
        if (scene.isScene !== true) scene = _emptyScene;
        const materialProperties = properties.get(material);
        const lights = currentRenderState.state.lights;
        const shadowsArray = currentRenderState.state.shadowsArray;
        const lightsStateVersion = lights.state.version;
        const parameters2 = programCache.getParameters(material, lights.state, shadowsArray, scene, object);
        const programCacheKey = programCache.getProgramCacheKey(parameters2);
        let programs = materialProperties.programs;
        materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
        materialProperties.fog = scene.fog;
        materialProperties.envMap = (material.isMeshStandardMaterial ? cubeuvmaps : cubemaps).get(material.envMap || materialProperties.environment);
        if (programs === void 0) {
          material.addEventListener("dispose", onMaterialDispose);
          programs = /* @__PURE__ */ new Map();
          materialProperties.programs = programs;
        }
        let program = programs.get(programCacheKey);
        if (program !== void 0) {
          if (materialProperties.currentProgram === program && materialProperties.lightsStateVersion === lightsStateVersion) {
            updateCommonMaterialProperties(material, parameters2);
            return program;
          }
        } else {
          parameters2.uniforms = programCache.getUniforms(material);
          material.onBuild(object, parameters2, _this);
          material.onBeforeCompile(parameters2, _this);
          program = programCache.acquireProgram(parameters2, programCacheKey);
          programs.set(programCacheKey, program);
          materialProperties.uniforms = parameters2.uniforms;
        }
        const uniforms = materialProperties.uniforms;
        if (!material.isShaderMaterial && !material.isRawShaderMaterial || material.clipping === true) {
          uniforms.clippingPlanes = clipping.uniform;
        }
        updateCommonMaterialProperties(material, parameters2);
        materialProperties.needsLights = materialNeedsLights(material);
        materialProperties.lightsStateVersion = lightsStateVersion;
        if (materialProperties.needsLights) {
          uniforms.ambientLightColor.value = lights.state.ambient;
          uniforms.lightProbe.value = lights.state.probe;
          uniforms.directionalLights.value = lights.state.directional;
          uniforms.directionalLightShadows.value = lights.state.directionalShadow;
          uniforms.spotLights.value = lights.state.spot;
          uniforms.spotLightShadows.value = lights.state.spotShadow;
          uniforms.rectAreaLights.value = lights.state.rectArea;
          uniforms.ltc_1.value = lights.state.rectAreaLTC1;
          uniforms.ltc_2.value = lights.state.rectAreaLTC2;
          uniforms.pointLights.value = lights.state.point;
          uniforms.pointLightShadows.value = lights.state.pointShadow;
          uniforms.hemisphereLights.value = lights.state.hemi;
          uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
          uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
          uniforms.spotShadowMap.value = lights.state.spotShadowMap;
          uniforms.spotLightMatrix.value = lights.state.spotLightMatrix;
          uniforms.spotLightMap.value = lights.state.spotLightMap;
          uniforms.pointShadowMap.value = lights.state.pointShadowMap;
          uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;
        }
        materialProperties.currentProgram = program;
        materialProperties.uniformsList = null;
        return program;
      }
      function getUniformList(materialProperties) {
        if (materialProperties.uniformsList === null) {
          const progUniforms = materialProperties.currentProgram.getUniforms();
          materialProperties.uniformsList = WebGLUniforms.seqWithValue(progUniforms.seq, materialProperties.uniforms);
        }
        return materialProperties.uniformsList;
      }
      function updateCommonMaterialProperties(material, parameters2) {
        const materialProperties = properties.get(material);
        materialProperties.outputColorSpace = parameters2.outputColorSpace;
        materialProperties.batching = parameters2.batching;
        materialProperties.instancing = parameters2.instancing;
        materialProperties.instancingColor = parameters2.instancingColor;
        materialProperties.skinning = parameters2.skinning;
        materialProperties.morphTargets = parameters2.morphTargets;
        materialProperties.morphNormals = parameters2.morphNormals;
        materialProperties.morphColors = parameters2.morphColors;
        materialProperties.morphTargetsCount = parameters2.morphTargetsCount;
        materialProperties.numClippingPlanes = parameters2.numClippingPlanes;
        materialProperties.numIntersection = parameters2.numClipIntersection;
        materialProperties.vertexAlphas = parameters2.vertexAlphas;
        materialProperties.vertexTangents = parameters2.vertexTangents;
        materialProperties.toneMapping = parameters2.toneMapping;
      }
      function setProgram(camera, scene, geometry, material, object) {
        if (scene.isScene !== true) scene = _emptyScene;
        textures.resetTextureUnits();
        const fog = scene.fog;
        const environment = material.isMeshStandardMaterial ? scene.environment : null;
        const colorSpace = _currentRenderTarget === null ? _this.outputColorSpace : _currentRenderTarget.isXRRenderTarget === true ? _currentRenderTarget.texture.colorSpace : LinearSRGBColorSpace;
        const envMap = (material.isMeshStandardMaterial ? cubeuvmaps : cubemaps).get(material.envMap || environment);
        const vertexAlphas = material.vertexColors === true && !!geometry.attributes.color && geometry.attributes.color.itemSize === 4;
        const vertexTangents = !!geometry.attributes.tangent && (!!material.normalMap || material.anisotropy > 0);
        const morphTargets = !!geometry.morphAttributes.position;
        const morphNormals = !!geometry.morphAttributes.normal;
        const morphColors = !!geometry.morphAttributes.color;
        let toneMapping = NoToneMapping;
        if (material.toneMapped) {
          if (_currentRenderTarget === null || _currentRenderTarget.isXRRenderTarget === true) {
            toneMapping = _this.toneMapping;
          }
        }
        const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
        const morphTargetsCount = morphAttribute !== void 0 ? morphAttribute.length : 0;
        const materialProperties = properties.get(material);
        const lights = currentRenderState.state.lights;
        if (_clippingEnabled === true) {
          if (_localClippingEnabled === true || camera !== _currentCamera) {
            const useCache = camera === _currentCamera && material.id === _currentMaterialId;
            clipping.setState(material, camera, useCache);
          }
        }
        let needsProgramChange = false;
        if (material.version === materialProperties.__version) {
          if (materialProperties.needsLights && materialProperties.lightsStateVersion !== lights.state.version) {
            needsProgramChange = true;
          } else if (materialProperties.outputColorSpace !== colorSpace) {
            needsProgramChange = true;
          } else if (object.isBatchedMesh && materialProperties.batching === false) {
            needsProgramChange = true;
          } else if (!object.isBatchedMesh && materialProperties.batching === true) {
            needsProgramChange = true;
          } else if (object.isInstancedMesh && materialProperties.instancing === false) {
            needsProgramChange = true;
          } else if (!object.isInstancedMesh && materialProperties.instancing === true) {
            needsProgramChange = true;
          } else if (object.isSkinnedMesh && materialProperties.skinning === false) {
            needsProgramChange = true;
          } else if (!object.isSkinnedMesh && materialProperties.skinning === true) {
            needsProgramChange = true;
          } else if (object.isInstancedMesh && materialProperties.instancingColor === true && object.instanceColor === null) {
            needsProgramChange = true;
          } else if (object.isInstancedMesh && materialProperties.instancingColor === false && object.instanceColor !== null) {
            needsProgramChange = true;
          } else if (materialProperties.envMap !== envMap) {
            needsProgramChange = true;
          } else if (material.fog === true && materialProperties.fog !== fog) {
            needsProgramChange = true;
          } else if (materialProperties.numClippingPlanes !== void 0 && (materialProperties.numClippingPlanes !== clipping.numPlanes || materialProperties.numIntersection !== clipping.numIntersection)) {
            needsProgramChange = true;
          } else if (materialProperties.vertexAlphas !== vertexAlphas) {
            needsProgramChange = true;
          } else if (materialProperties.vertexTangents !== vertexTangents) {
            needsProgramChange = true;
          } else if (materialProperties.morphTargets !== morphTargets) {
            needsProgramChange = true;
          } else if (materialProperties.morphNormals !== morphNormals) {
            needsProgramChange = true;
          } else if (materialProperties.morphColors !== morphColors) {
            needsProgramChange = true;
          } else if (materialProperties.toneMapping !== toneMapping) {
            needsProgramChange = true;
          } else if (capabilities.isWebGL2 === true && materialProperties.morphTargetsCount !== morphTargetsCount) {
            needsProgramChange = true;
          }
        } else {
          needsProgramChange = true;
          materialProperties.__version = material.version;
        }
        let program = materialProperties.currentProgram;
        if (needsProgramChange === true) {
          program = getProgram(material, scene, object);
        }
        let refreshProgram = false;
        let refreshMaterial = false;
        let refreshLights = false;
        const p_uniforms = program.getUniforms(), m_uniforms = materialProperties.uniforms;
        if (state.useProgram(program.program)) {
          refreshProgram = true;
          refreshMaterial = true;
          refreshLights = true;
        }
        if (material.id !== _currentMaterialId) {
          _currentMaterialId = material.id;
          refreshMaterial = true;
        }
        if (refreshProgram || _currentCamera !== camera) {
          p_uniforms.setValue(_gl, "projectionMatrix", camera.projectionMatrix);
          p_uniforms.setValue(_gl, "viewMatrix", camera.matrixWorldInverse);
          const uCamPos = p_uniforms.map.cameraPosition;
          if (uCamPos !== void 0) {
            uCamPos.setValue(_gl, _vector32.setFromMatrixPosition(camera.matrixWorld));
          }
          if (capabilities.logarithmicDepthBuffer) {
            p_uniforms.setValue(
              _gl,
              "logDepthBufFC",
              2 / (Math.log(camera.far + 1) / Math.LN2)
            );
          }
          if (material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshLambertMaterial || material.isMeshBasicMaterial || material.isMeshStandardMaterial || material.isShaderMaterial) {
            p_uniforms.setValue(_gl, "isOrthographic", camera.isOrthographicCamera === true);
          }
          if (_currentCamera !== camera) {
            _currentCamera = camera;
            refreshMaterial = true;
            refreshLights = true;
          }
        }
        if (object.isSkinnedMesh) {
          p_uniforms.setOptional(_gl, object, "bindMatrix");
          p_uniforms.setOptional(_gl, object, "bindMatrixInverse");
          const skeleton = object.skeleton;
          if (skeleton) {
            if (capabilities.floatVertexTextures) {
              if (skeleton.boneTexture === null) skeleton.computeBoneTexture();
              p_uniforms.setValue(_gl, "boneTexture", skeleton.boneTexture, textures);
            } else {
              console.warn("THREE.WebGLRenderer: SkinnedMesh can only be used with WebGL 2. With WebGL 1 OES_texture_float and vertex textures support is required.");
            }
          }
        }
        if (object.isBatchedMesh) {
          p_uniforms.setOptional(_gl, object, "batchingTexture");
          p_uniforms.setValue(_gl, "batchingTexture", object._matricesTexture, textures);
        }
        const morphAttributes = geometry.morphAttributes;
        if (morphAttributes.position !== void 0 || morphAttributes.normal !== void 0 || morphAttributes.color !== void 0 && capabilities.isWebGL2 === true) {
          morphtargets.update(object, geometry, program);
        }
        if (refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow) {
          materialProperties.receiveShadow = object.receiveShadow;
          p_uniforms.setValue(_gl, "receiveShadow", object.receiveShadow);
        }
        if (material.isMeshGouraudMaterial && material.envMap !== null) {
          m_uniforms.envMap.value = envMap;
          m_uniforms.flipEnvMap.value = envMap.isCubeTexture && envMap.isRenderTargetTexture === false ? -1 : 1;
        }
        if (refreshMaterial) {
          p_uniforms.setValue(_gl, "toneMappingExposure", _this.toneMappingExposure);
          if (materialProperties.needsLights) {
            markUniformsLightsNeedsUpdate(m_uniforms, refreshLights);
          }
          if (fog && material.fog === true) {
            materials.refreshFogUniforms(m_uniforms, fog);
          }
          materials.refreshMaterialUniforms(m_uniforms, material, _pixelRatio, _height, _transmissionRenderTarget);
          WebGLUniforms.upload(_gl, getUniformList(materialProperties), m_uniforms, textures);
        }
        if (material.isShaderMaterial && material.uniformsNeedUpdate === true) {
          WebGLUniforms.upload(_gl, getUniformList(materialProperties), m_uniforms, textures);
          material.uniformsNeedUpdate = false;
        }
        if (material.isSpriteMaterial) {
          p_uniforms.setValue(_gl, "center", object.center);
        }
        p_uniforms.setValue(_gl, "modelViewMatrix", object.modelViewMatrix);
        p_uniforms.setValue(_gl, "normalMatrix", object.normalMatrix);
        p_uniforms.setValue(_gl, "modelMatrix", object.matrixWorld);
        if (material.isShaderMaterial || material.isRawShaderMaterial) {
          const groups = material.uniformsGroups;
          for (let i = 0, l = groups.length; i < l; i++) {
            if (capabilities.isWebGL2) {
              const group = groups[i];
              uniformsGroups.update(group, program);
              uniformsGroups.bind(group, program);
            } else {
              console.warn("THREE.WebGLRenderer: Uniform Buffer Objects can only be used with WebGL 2.");
            }
          }
        }
        return program;
      }
      function markUniformsLightsNeedsUpdate(uniforms, value) {
        uniforms.ambientLightColor.needsUpdate = value;
        uniforms.lightProbe.needsUpdate = value;
        uniforms.directionalLights.needsUpdate = value;
        uniforms.directionalLightShadows.needsUpdate = value;
        uniforms.pointLights.needsUpdate = value;
        uniforms.pointLightShadows.needsUpdate = value;
        uniforms.spotLights.needsUpdate = value;
        uniforms.spotLightShadows.needsUpdate = value;
        uniforms.rectAreaLights.needsUpdate = value;
        uniforms.hemisphereLights.needsUpdate = value;
      }
      function materialNeedsLights(material) {
        return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial || material.isMeshStandardMaterial || material.isShadowMaterial || material.isShaderMaterial && material.lights === true;
      }
      this.getActiveCubeFace = function() {
        return _currentActiveCubeFace;
      };
      this.getActiveMipmapLevel = function() {
        return _currentActiveMipmapLevel;
      };
      this.getRenderTarget = function() {
        return _currentRenderTarget;
      };
      this.setRenderTargetTextures = function(renderTarget, colorTexture, depthTexture) {
        properties.get(renderTarget.texture).__webglTexture = colorTexture;
        properties.get(renderTarget.depthTexture).__webglTexture = depthTexture;
        const renderTargetProperties = properties.get(renderTarget);
        renderTargetProperties.__hasExternalTextures = true;
        if (renderTargetProperties.__hasExternalTextures) {
          renderTargetProperties.__autoAllocateDepthBuffer = depthTexture === void 0;
          if (!renderTargetProperties.__autoAllocateDepthBuffer) {
            if (extensions.has("WEBGL_multisampled_render_to_texture") === true) {
              console.warn("THREE.WebGLRenderer: Render-to-texture extension was disabled because an external texture was provided");
              renderTargetProperties.__useRenderToTexture = false;
            }
          }
        }
      };
      this.setRenderTargetFramebuffer = function(renderTarget, defaultFramebuffer) {
        const renderTargetProperties = properties.get(renderTarget);
        renderTargetProperties.__webglFramebuffer = defaultFramebuffer;
        renderTargetProperties.__useDefaultFramebuffer = defaultFramebuffer === void 0;
      };
      this.setRenderTarget = function(renderTarget, activeCubeFace = 0, activeMipmapLevel = 0) {
        _currentRenderTarget = renderTarget;
        _currentActiveCubeFace = activeCubeFace;
        _currentActiveMipmapLevel = activeMipmapLevel;
        let useDefaultFramebuffer = true;
        let framebuffer = null;
        let isCube = false;
        let isRenderTarget3D = false;
        if (renderTarget) {
          const renderTargetProperties = properties.get(renderTarget);
          if (renderTargetProperties.__useDefaultFramebuffer !== void 0) {
            state.bindFramebuffer(_gl.FRAMEBUFFER, null);
            useDefaultFramebuffer = false;
          } else if (renderTargetProperties.__webglFramebuffer === void 0) {
            textures.setupRenderTarget(renderTarget);
          } else if (renderTargetProperties.__hasExternalTextures) {
            textures.rebindTextures(renderTarget, properties.get(renderTarget.texture).__webglTexture, properties.get(renderTarget.depthTexture).__webglTexture);
          }
          const texture = renderTarget.texture;
          if (texture.isData3DTexture || texture.isDataArrayTexture || texture.isCompressedArrayTexture) {
            isRenderTarget3D = true;
          }
          const __webglFramebuffer = properties.get(renderTarget).__webglFramebuffer;
          if (renderTarget.isWebGLCubeRenderTarget) {
            if (Array.isArray(__webglFramebuffer[activeCubeFace])) {
              framebuffer = __webglFramebuffer[activeCubeFace][activeMipmapLevel];
            } else {
              framebuffer = __webglFramebuffer[activeCubeFace];
            }
            isCube = true;
          } else if (capabilities.isWebGL2 && renderTarget.samples > 0 && textures.useMultisampledRTT(renderTarget) === false) {
            framebuffer = properties.get(renderTarget).__webglMultisampledFramebuffer;
          } else {
            if (Array.isArray(__webglFramebuffer)) {
              framebuffer = __webglFramebuffer[activeMipmapLevel];
            } else {
              framebuffer = __webglFramebuffer;
            }
          }
          _currentViewport.copy(renderTarget.viewport);
          _currentScissor.copy(renderTarget.scissor);
          _currentScissorTest = renderTarget.scissorTest;
        } else {
          _currentViewport.copy(_viewport).multiplyScalar(_pixelRatio).floor();
          _currentScissor.copy(_scissor).multiplyScalar(_pixelRatio).floor();
          _currentScissorTest = _scissorTest;
        }
        const framebufferBound = state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
        if (framebufferBound && capabilities.drawBuffers && useDefaultFramebuffer) {
          state.drawBuffers(renderTarget, framebuffer);
        }
        state.viewport(_currentViewport);
        state.scissor(_currentScissor);
        state.setScissorTest(_currentScissorTest);
        if (isCube) {
          const textureProperties = properties.get(renderTarget.texture);
          _gl.framebufferTexture2D(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel);
        } else if (isRenderTarget3D) {
          const textureProperties = properties.get(renderTarget.texture);
          const layer = activeCubeFace || 0;
          _gl.framebufferTextureLayer(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, textureProperties.__webglTexture, activeMipmapLevel || 0, layer);
        }
        _currentMaterialId = -1;
      };
      this.readRenderTargetPixels = function(renderTarget, x, y, width, height, buffer, activeCubeFaceIndex) {
        if (!(renderTarget && renderTarget.isWebGLRenderTarget)) {
          console.error("THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.");
          return;
        }
        let framebuffer = properties.get(renderTarget).__webglFramebuffer;
        if (renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== void 0) {
          framebuffer = framebuffer[activeCubeFaceIndex];
        }
        if (framebuffer) {
          state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
          try {
            const texture = renderTarget.texture;
            const textureFormat = texture.format;
            const textureType = texture.type;
            if (textureFormat !== RGBAFormat && utils.convert(textureFormat) !== _gl.getParameter(_gl.IMPLEMENTATION_COLOR_READ_FORMAT)) {
              console.error("THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.");
              return;
            }
            const halfFloatSupportedByExt = textureType === HalfFloatType && (extensions.has("EXT_color_buffer_half_float") || capabilities.isWebGL2 && extensions.has("EXT_color_buffer_float"));
            if (textureType !== UnsignedByteType && utils.convert(textureType) !== _gl.getParameter(_gl.IMPLEMENTATION_COLOR_READ_TYPE) && // Edge and Chrome Mac < 52 (#9513)
            !(textureType === FloatType && (capabilities.isWebGL2 || extensions.has("OES_texture_float") || extensions.has("WEBGL_color_buffer_float"))) && // Chrome Mac >= 52 and Firefox
            !halfFloatSupportedByExt) {
              console.error("THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.");
              return;
            }
            if (x >= 0 && x <= renderTarget.width - width && (y >= 0 && y <= renderTarget.height - height)) {
              _gl.readPixels(x, y, width, height, utils.convert(textureFormat), utils.convert(textureType), buffer);
            }
          } finally {
            const framebuffer2 = _currentRenderTarget !== null ? properties.get(_currentRenderTarget).__webglFramebuffer : null;
            state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer2);
          }
        }
      };
      this.copyFramebufferToTexture = function(position, texture, level = 0) {
        const levelScale = Math.pow(2, -level);
        const width = Math.floor(texture.image.width * levelScale);
        const height = Math.floor(texture.image.height * levelScale);
        textures.setTexture2D(texture, 0);
        _gl.copyTexSubImage2D(_gl.TEXTURE_2D, level, 0, 0, position.x, position.y, width, height);
        state.unbindTexture();
      };
      this.copyTextureToTexture = function(position, srcTexture, dstTexture, level = 0) {
        const width = srcTexture.image.width;
        const height = srcTexture.image.height;
        const glFormat = utils.convert(dstTexture.format);
        const glType = utils.convert(dstTexture.type);
        textures.setTexture2D(dstTexture, 0);
        _gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY);
        _gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha);
        _gl.pixelStorei(_gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment);
        if (srcTexture.isDataTexture) {
          _gl.texSubImage2D(_gl.TEXTURE_2D, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data);
        } else {
          if (srcTexture.isCompressedTexture) {
            _gl.compressedTexSubImage2D(_gl.TEXTURE_2D, level, position.x, position.y, srcTexture.mipmaps[0].width, srcTexture.mipmaps[0].height, glFormat, srcTexture.mipmaps[0].data);
          } else {
            _gl.texSubImage2D(_gl.TEXTURE_2D, level, position.x, position.y, glFormat, glType, srcTexture.image);
          }
        }
        if (level === 0 && dstTexture.generateMipmaps) _gl.generateMipmap(_gl.TEXTURE_2D);
        state.unbindTexture();
      };
      this.copyTextureToTexture3D = function(sourceBox, position, srcTexture, dstTexture, level = 0) {
        if (_this.isWebGL1Renderer) {
          console.warn("THREE.WebGLRenderer.copyTextureToTexture3D: can only be used with WebGL2.");
          return;
        }
        const width = sourceBox.max.x - sourceBox.min.x + 1;
        const height = sourceBox.max.y - sourceBox.min.y + 1;
        const depth2 = sourceBox.max.z - sourceBox.min.z + 1;
        const glFormat = utils.convert(dstTexture.format);
        const glType = utils.convert(dstTexture.type);
        let glTarget;
        if (dstTexture.isData3DTexture) {
          textures.setTexture3D(dstTexture, 0);
          glTarget = _gl.TEXTURE_3D;
        } else if (dstTexture.isDataArrayTexture || dstTexture.isCompressedArrayTexture) {
          textures.setTexture2DArray(dstTexture, 0);
          glTarget = _gl.TEXTURE_2D_ARRAY;
        } else {
          console.warn("THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.");
          return;
        }
        _gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY);
        _gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha);
        _gl.pixelStorei(_gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment);
        const unpackRowLen = _gl.getParameter(_gl.UNPACK_ROW_LENGTH);
        const unpackImageHeight = _gl.getParameter(_gl.UNPACK_IMAGE_HEIGHT);
        const unpackSkipPixels = _gl.getParameter(_gl.UNPACK_SKIP_PIXELS);
        const unpackSkipRows = _gl.getParameter(_gl.UNPACK_SKIP_ROWS);
        const unpackSkipImages = _gl.getParameter(_gl.UNPACK_SKIP_IMAGES);
        const image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[level] : srcTexture.image;
        _gl.pixelStorei(_gl.UNPACK_ROW_LENGTH, image.width);
        _gl.pixelStorei(_gl.UNPACK_IMAGE_HEIGHT, image.height);
        _gl.pixelStorei(_gl.UNPACK_SKIP_PIXELS, sourceBox.min.x);
        _gl.pixelStorei(_gl.UNPACK_SKIP_ROWS, sourceBox.min.y);
        _gl.pixelStorei(_gl.UNPACK_SKIP_IMAGES, sourceBox.min.z);
        if (srcTexture.isDataTexture || srcTexture.isData3DTexture) {
          _gl.texSubImage3D(glTarget, level, position.x, position.y, position.z, width, height, depth2, glFormat, glType, image.data);
        } else {
          if (srcTexture.isCompressedArrayTexture) {
            console.warn("THREE.WebGLRenderer.copyTextureToTexture3D: untested support for compressed srcTexture.");
            _gl.compressedTexSubImage3D(glTarget, level, position.x, position.y, position.z, width, height, depth2, glFormat, image.data);
          } else {
            _gl.texSubImage3D(glTarget, level, position.x, position.y, position.z, width, height, depth2, glFormat, glType, image);
          }
        }
        _gl.pixelStorei(_gl.UNPACK_ROW_LENGTH, unpackRowLen);
        _gl.pixelStorei(_gl.UNPACK_IMAGE_HEIGHT, unpackImageHeight);
        _gl.pixelStorei(_gl.UNPACK_SKIP_PIXELS, unpackSkipPixels);
        _gl.pixelStorei(_gl.UNPACK_SKIP_ROWS, unpackSkipRows);
        _gl.pixelStorei(_gl.UNPACK_SKIP_IMAGES, unpackSkipImages);
        if (level === 0 && dstTexture.generateMipmaps) _gl.generateMipmap(glTarget);
        state.unbindTexture();
      };
      this.initTexture = function(texture) {
        if (texture.isCubeTexture) {
          textures.setTextureCube(texture, 0);
        } else if (texture.isData3DTexture) {
          textures.setTexture3D(texture, 0);
        } else if (texture.isDataArrayTexture || texture.isCompressedArrayTexture) {
          textures.setTexture2DArray(texture, 0);
        } else {
          textures.setTexture2D(texture, 0);
        }
        state.unbindTexture();
      };
      this.resetState = function() {
        _currentActiveCubeFace = 0;
        _currentActiveMipmapLevel = 0;
        _currentRenderTarget = null;
        state.reset();
        bindingStates.reset();
      };
      if (typeof __THREE_DEVTOOLS__ !== "undefined") {
        __THREE_DEVTOOLS__.dispatchEvent(new CustomEvent("observe", { detail: this }));
      }
    }
    get coordinateSystem() {
      return WebGLCoordinateSystem;
    }
    get outputColorSpace() {
      return this._outputColorSpace;
    }
    set outputColorSpace(colorSpace) {
      this._outputColorSpace = colorSpace;
      const gl = this.getContext();
      gl.drawingBufferColorSpace = colorSpace === DisplayP3ColorSpace ? "display-p3" : "srgb";
      gl.unpackColorSpace = ColorManagement.workingColorSpace === LinearDisplayP3ColorSpace ? "display-p3" : "srgb";
    }
    get outputEncoding() {
      console.warn("THREE.WebGLRenderer: Property .outputEncoding has been removed. Use .outputColorSpace instead.");
      return this.outputColorSpace === SRGBColorSpace ? sRGBEncoding : LinearEncoding;
    }
    set outputEncoding(encoding) {
      console.warn("THREE.WebGLRenderer: Property .outputEncoding has been removed. Use .outputColorSpace instead.");
      this.outputColorSpace = encoding === sRGBEncoding ? SRGBColorSpace : LinearSRGBColorSpace;
    }
    get useLegacyLights() {
      console.warn("THREE.WebGLRenderer: The property .useLegacyLights has been deprecated. Migrate your lighting according to the following guide: https://discourse.threejs.org/t/updates-to-lighting-in-three-js-r155/53733.");
      return this._useLegacyLights;
    }
    set useLegacyLights(value) {
      console.warn("THREE.WebGLRenderer: The property .useLegacyLights has been deprecated. Migrate your lighting according to the following guide: https://discourse.threejs.org/t/updates-to-lighting-in-three-js-r155/53733.");
      this._useLegacyLights = value;
    }
  };
  var WebGL1Renderer = class extends WebGLRenderer {
  };
  WebGL1Renderer.prototype.isWebGL1Renderer = true;
  var FogExp2 = class _FogExp2 {
    constructor(color, density = 25e-5) {
      this.isFogExp2 = true;
      this.name = "";
      this.color = new Color(color);
      this.density = density;
    }
    clone() {
      return new _FogExp2(this.color, this.density);
    }
    toJSON() {
      return {
        type: "FogExp2",
        name: this.name,
        color: this.color.getHex(),
        density: this.density
      };
    }
  };
  var Fog = class _Fog {
    constructor(color, near = 1, far = 1e3) {
      this.isFog = true;
      this.name = "";
      this.color = new Color(color);
      this.near = near;
      this.far = far;
    }
    clone() {
      return new _Fog(this.color, this.near, this.far);
    }
    toJSON() {
      return {
        type: "Fog",
        name: this.name,
        color: this.color.getHex(),
        near: this.near,
        far: this.far
      };
    }
  };
  var Scene = class extends Object3D {
    constructor() {
      super();
      this.isScene = true;
      this.type = "Scene";
      this.background = null;
      this.environment = null;
      this.fog = null;
      this.backgroundBlurriness = 0;
      this.backgroundIntensity = 1;
      this.overrideMaterial = null;
      if (typeof __THREE_DEVTOOLS__ !== "undefined") {
        __THREE_DEVTOOLS__.dispatchEvent(new CustomEvent("observe", { detail: this }));
      }
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      if (source.background !== null) this.background = source.background.clone();
      if (source.environment !== null) this.environment = source.environment.clone();
      if (source.fog !== null) this.fog = source.fog.clone();
      this.backgroundBlurriness = source.backgroundBlurriness;
      this.backgroundIntensity = source.backgroundIntensity;
      if (source.overrideMaterial !== null) this.overrideMaterial = source.overrideMaterial.clone();
      this.matrixAutoUpdate = source.matrixAutoUpdate;
      return this;
    }
    toJSON(meta) {
      const data = super.toJSON(meta);
      if (this.fog !== null) data.object.fog = this.fog.toJSON();
      if (this.backgroundBlurriness > 0) data.object.backgroundBlurriness = this.backgroundBlurriness;
      if (this.backgroundIntensity !== 1) data.object.backgroundIntensity = this.backgroundIntensity;
      return data;
    }
  };
  var InterleavedBuffer = class {
    constructor(array, stride) {
      this.isInterleavedBuffer = true;
      this.array = array;
      this.stride = stride;
      this.count = array !== void 0 ? array.length / stride : 0;
      this.usage = StaticDrawUsage;
      this._updateRange = { offset: 0, count: -1 };
      this.updateRanges = [];
      this.version = 0;
      this.uuid = generateUUID();
    }
    onUploadCallback() {
    }
    set needsUpdate(value) {
      if (value === true) this.version++;
    }
    get updateRange() {
      console.warn("THREE.InterleavedBuffer: updateRange() is deprecated and will be removed in r169. Use addUpdateRange() instead.");
      return this._updateRange;
    }
    setUsage(value) {
      this.usage = value;
      return this;
    }
    addUpdateRange(start, count) {
      this.updateRanges.push({ start, count });
    }
    clearUpdateRanges() {
      this.updateRanges.length = 0;
    }
    copy(source) {
      this.array = new source.array.constructor(source.array);
      this.count = source.count;
      this.stride = source.stride;
      this.usage = source.usage;
      return this;
    }
    copyAt(index1, attribute, index2) {
      index1 *= this.stride;
      index2 *= attribute.stride;
      for (let i = 0, l = this.stride; i < l; i++) {
        this.array[index1 + i] = attribute.array[index2 + i];
      }
      return this;
    }
    set(value, offset = 0) {
      this.array.set(value, offset);
      return this;
    }
    clone(data) {
      if (data.arrayBuffers === void 0) {
        data.arrayBuffers = {};
      }
      if (this.array.buffer._uuid === void 0) {
        this.array.buffer._uuid = generateUUID();
      }
      if (data.arrayBuffers[this.array.buffer._uuid] === void 0) {
        data.arrayBuffers[this.array.buffer._uuid] = this.array.slice(0).buffer;
      }
      const array = new this.array.constructor(data.arrayBuffers[this.array.buffer._uuid]);
      const ib = new this.constructor(array, this.stride);
      ib.setUsage(this.usage);
      return ib;
    }
    onUpload(callback) {
      this.onUploadCallback = callback;
      return this;
    }
    toJSON(data) {
      if (data.arrayBuffers === void 0) {
        data.arrayBuffers = {};
      }
      if (this.array.buffer._uuid === void 0) {
        this.array.buffer._uuid = generateUUID();
      }
      if (data.arrayBuffers[this.array.buffer._uuid] === void 0) {
        data.arrayBuffers[this.array.buffer._uuid] = Array.from(new Uint32Array(this.array.buffer));
      }
      return {
        uuid: this.uuid,
        buffer: this.array.buffer._uuid,
        type: this.array.constructor.name,
        stride: this.stride
      };
    }
  };
  var _vector$6 = /* @__PURE__ */ new Vector3();
  var InterleavedBufferAttribute = class _InterleavedBufferAttribute {
    constructor(interleavedBuffer, itemSize, offset, normalized = false) {
      this.isInterleavedBufferAttribute = true;
      this.name = "";
      this.data = interleavedBuffer;
      this.itemSize = itemSize;
      this.offset = offset;
      this.normalized = normalized;
    }
    get count() {
      return this.data.count;
    }
    get array() {
      return this.data.array;
    }
    set needsUpdate(value) {
      this.data.needsUpdate = value;
    }
    applyMatrix4(m) {
      for (let i = 0, l = this.data.count; i < l; i++) {
        _vector$6.fromBufferAttribute(this, i);
        _vector$6.applyMatrix4(m);
        this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
      }
      return this;
    }
    applyNormalMatrix(m) {
      for (let i = 0, l = this.count; i < l; i++) {
        _vector$6.fromBufferAttribute(this, i);
        _vector$6.applyNormalMatrix(m);
        this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
      }
      return this;
    }
    transformDirection(m) {
      for (let i = 0, l = this.count; i < l; i++) {
        _vector$6.fromBufferAttribute(this, i);
        _vector$6.transformDirection(m);
        this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
      }
      return this;
    }
    setX(index, x) {
      if (this.normalized) x = normalize(x, this.array);
      this.data.array[index * this.data.stride + this.offset] = x;
      return this;
    }
    setY(index, y) {
      if (this.normalized) y = normalize(y, this.array);
      this.data.array[index * this.data.stride + this.offset + 1] = y;
      return this;
    }
    setZ(index, z) {
      if (this.normalized) z = normalize(z, this.array);
      this.data.array[index * this.data.stride + this.offset + 2] = z;
      return this;
    }
    setW(index, w) {
      if (this.normalized) w = normalize(w, this.array);
      this.data.array[index * this.data.stride + this.offset + 3] = w;
      return this;
    }
    getX(index) {
      let x = this.data.array[index * this.data.stride + this.offset];
      if (this.normalized) x = denormalize(x, this.array);
      return x;
    }
    getY(index) {
      let y = this.data.array[index * this.data.stride + this.offset + 1];
      if (this.normalized) y = denormalize(y, this.array);
      return y;
    }
    getZ(index) {
      let z = this.data.array[index * this.data.stride + this.offset + 2];
      if (this.normalized) z = denormalize(z, this.array);
      return z;
    }
    getW(index) {
      let w = this.data.array[index * this.data.stride + this.offset + 3];
      if (this.normalized) w = denormalize(w, this.array);
      return w;
    }
    setXY(index, x, y) {
      index = index * this.data.stride + this.offset;
      if (this.normalized) {
        x = normalize(x, this.array);
        y = normalize(y, this.array);
      }
      this.data.array[index + 0] = x;
      this.data.array[index + 1] = y;
      return this;
    }
    setXYZ(index, x, y, z) {
      index = index * this.data.stride + this.offset;
      if (this.normalized) {
        x = normalize(x, this.array);
        y = normalize(y, this.array);
        z = normalize(z, this.array);
      }
      this.data.array[index + 0] = x;
      this.data.array[index + 1] = y;
      this.data.array[index + 2] = z;
      return this;
    }
    setXYZW(index, x, y, z, w) {
      index = index * this.data.stride + this.offset;
      if (this.normalized) {
        x = normalize(x, this.array);
        y = normalize(y, this.array);
        z = normalize(z, this.array);
        w = normalize(w, this.array);
      }
      this.data.array[index + 0] = x;
      this.data.array[index + 1] = y;
      this.data.array[index + 2] = z;
      this.data.array[index + 3] = w;
      return this;
    }
    clone(data) {
      if (data === void 0) {
        console.log("THREE.InterleavedBufferAttribute.clone(): Cloning an interleaved buffer attribute will de-interleave buffer data.");
        const array = [];
        for (let i = 0; i < this.count; i++) {
          const index = i * this.data.stride + this.offset;
          for (let j = 0; j < this.itemSize; j++) {
            array.push(this.data.array[index + j]);
          }
        }
        return new BufferAttribute(new this.array.constructor(array), this.itemSize, this.normalized);
      } else {
        if (data.interleavedBuffers === void 0) {
          data.interleavedBuffers = {};
        }
        if (data.interleavedBuffers[this.data.uuid] === void 0) {
          data.interleavedBuffers[this.data.uuid] = this.data.clone(data);
        }
        return new _InterleavedBufferAttribute(data.interleavedBuffers[this.data.uuid], this.itemSize, this.offset, this.normalized);
      }
    }
    toJSON(data) {
      if (data === void 0) {
        console.log("THREE.InterleavedBufferAttribute.toJSON(): Serializing an interleaved buffer attribute will de-interleave buffer data.");
        const array = [];
        for (let i = 0; i < this.count; i++) {
          const index = i * this.data.stride + this.offset;
          for (let j = 0; j < this.itemSize; j++) {
            array.push(this.data.array[index + j]);
          }
        }
        return {
          itemSize: this.itemSize,
          type: this.array.constructor.name,
          array,
          normalized: this.normalized
        };
      } else {
        if (data.interleavedBuffers === void 0) {
          data.interleavedBuffers = {};
        }
        if (data.interleavedBuffers[this.data.uuid] === void 0) {
          data.interleavedBuffers[this.data.uuid] = this.data.toJSON(data);
        }
        return {
          isInterleavedBufferAttribute: true,
          itemSize: this.itemSize,
          data: this.data.uuid,
          offset: this.offset,
          normalized: this.normalized
        };
      }
    }
  };
  var SpriteMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isSpriteMaterial = true;
      this.type = "SpriteMaterial";
      this.color = new Color(16777215);
      this.map = null;
      this.alphaMap = null;
      this.rotation = 0;
      this.sizeAttenuation = true;
      this.transparent = true;
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.color.copy(source.color);
      this.map = source.map;
      this.alphaMap = source.alphaMap;
      this.rotation = source.rotation;
      this.sizeAttenuation = source.sizeAttenuation;
      this.fog = source.fog;
      return this;
    }
  };
  var _geometry;
  var _intersectPoint = /* @__PURE__ */ new Vector3();
  var _worldScale = /* @__PURE__ */ new Vector3();
  var _mvPosition = /* @__PURE__ */ new Vector3();
  var _alignedPosition = /* @__PURE__ */ new Vector2();
  var _rotatedPosition = /* @__PURE__ */ new Vector2();
  var _viewWorldMatrix = /* @__PURE__ */ new Matrix4();
  var _vA = /* @__PURE__ */ new Vector3();
  var _vB = /* @__PURE__ */ new Vector3();
  var _vC = /* @__PURE__ */ new Vector3();
  var _uvA = /* @__PURE__ */ new Vector2();
  var _uvB = /* @__PURE__ */ new Vector2();
  var _uvC = /* @__PURE__ */ new Vector2();
  var Sprite = class extends Object3D {
    constructor(material = new SpriteMaterial()) {
      super();
      this.isSprite = true;
      this.type = "Sprite";
      if (_geometry === void 0) {
        _geometry = new BufferGeometry();
        const float32Array = new Float32Array([
          -0.5,
          -0.5,
          0,
          0,
          0,
          0.5,
          -0.5,
          0,
          1,
          0,
          0.5,
          0.5,
          0,
          1,
          1,
          -0.5,
          0.5,
          0,
          0,
          1
        ]);
        const interleavedBuffer = new InterleavedBuffer(float32Array, 5);
        _geometry.setIndex([0, 1, 2, 0, 2, 3]);
        _geometry.setAttribute("position", new InterleavedBufferAttribute(interleavedBuffer, 3, 0, false));
        _geometry.setAttribute("uv", new InterleavedBufferAttribute(interleavedBuffer, 2, 3, false));
      }
      this.geometry = _geometry;
      this.material = material;
      this.center = new Vector2(0.5, 0.5);
    }
    raycast(raycaster, intersects2) {
      if (raycaster.camera === null) {
        console.error('THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.');
      }
      _worldScale.setFromMatrixScale(this.matrixWorld);
      _viewWorldMatrix.copy(raycaster.camera.matrixWorld);
      this.modelViewMatrix.multiplyMatrices(raycaster.camera.matrixWorldInverse, this.matrixWorld);
      _mvPosition.setFromMatrixPosition(this.modelViewMatrix);
      if (raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false) {
        _worldScale.multiplyScalar(-_mvPosition.z);
      }
      const rotation = this.material.rotation;
      let sin, cos;
      if (rotation !== 0) {
        cos = Math.cos(rotation);
        sin = Math.sin(rotation);
      }
      const center = this.center;
      transformVertex(_vA.set(-0.5, -0.5, 0), _mvPosition, center, _worldScale, sin, cos);
      transformVertex(_vB.set(0.5, -0.5, 0), _mvPosition, center, _worldScale, sin, cos);
      transformVertex(_vC.set(0.5, 0.5, 0), _mvPosition, center, _worldScale, sin, cos);
      _uvA.set(0, 0);
      _uvB.set(1, 0);
      _uvC.set(1, 1);
      let intersect = raycaster.ray.intersectTriangle(_vA, _vB, _vC, false, _intersectPoint);
      if (intersect === null) {
        transformVertex(_vB.set(-0.5, 0.5, 0), _mvPosition, center, _worldScale, sin, cos);
        _uvB.set(0, 1);
        intersect = raycaster.ray.intersectTriangle(_vA, _vC, _vB, false, _intersectPoint);
        if (intersect === null) {
          return;
        }
      }
      const distance = raycaster.ray.origin.distanceTo(_intersectPoint);
      if (distance < raycaster.near || distance > raycaster.far) return;
      intersects2.push({
        distance,
        point: _intersectPoint.clone(),
        uv: Triangle.getInterpolation(_intersectPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2()),
        face: null,
        object: this
      });
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      if (source.center !== void 0) this.center.copy(source.center);
      this.material = source.material;
      return this;
    }
  };
  function transformVertex(vertexPosition, mvPosition, center, scale, sin, cos) {
    _alignedPosition.subVectors(vertexPosition, center).addScalar(0.5).multiply(scale);
    if (sin !== void 0) {
      _rotatedPosition.x = cos * _alignedPosition.x - sin * _alignedPosition.y;
      _rotatedPosition.y = sin * _alignedPosition.x + cos * _alignedPosition.y;
    } else {
      _rotatedPosition.copy(_alignedPosition);
    }
    vertexPosition.copy(mvPosition);
    vertexPosition.x += _rotatedPosition.x;
    vertexPosition.y += _rotatedPosition.y;
    vertexPosition.applyMatrix4(_viewWorldMatrix);
  }
  var _v1$2 = /* @__PURE__ */ new Vector3();
  var _v2$1 = /* @__PURE__ */ new Vector3();
  var LOD = class extends Object3D {
    constructor() {
      super();
      this._currentLevel = 0;
      this.type = "LOD";
      Object.defineProperties(this, {
        levels: {
          enumerable: true,
          value: []
        },
        isLOD: {
          value: true
        }
      });
      this.autoUpdate = true;
    }
    copy(source) {
      super.copy(source, false);
      const levels = source.levels;
      for (let i = 0, l = levels.length; i < l; i++) {
        const level = levels[i];
        this.addLevel(level.object.clone(), level.distance, level.hysteresis);
      }
      this.autoUpdate = source.autoUpdate;
      return this;
    }
    addLevel(object, distance = 0, hysteresis = 0) {
      distance = Math.abs(distance);
      const levels = this.levels;
      let l;
      for (l = 0; l < levels.length; l++) {
        if (distance < levels[l].distance) {
          break;
        }
      }
      levels.splice(l, 0, { distance, hysteresis, object });
      this.add(object);
      return this;
    }
    getCurrentLevel() {
      return this._currentLevel;
    }
    getObjectForDistance(distance) {
      const levels = this.levels;
      if (levels.length > 0) {
        let i, l;
        for (i = 1, l = levels.length; i < l; i++) {
          let levelDistance = levels[i].distance;
          if (levels[i].object.visible) {
            levelDistance -= levelDistance * levels[i].hysteresis;
          }
          if (distance < levelDistance) {
            break;
          }
        }
        return levels[i - 1].object;
      }
      return null;
    }
    raycast(raycaster, intersects2) {
      const levels = this.levels;
      if (levels.length > 0) {
        _v1$2.setFromMatrixPosition(this.matrixWorld);
        const distance = raycaster.ray.origin.distanceTo(_v1$2);
        this.getObjectForDistance(distance).raycast(raycaster, intersects2);
      }
    }
    update(camera) {
      const levels = this.levels;
      if (levels.length > 1) {
        _v1$2.setFromMatrixPosition(camera.matrixWorld);
        _v2$1.setFromMatrixPosition(this.matrixWorld);
        const distance = _v1$2.distanceTo(_v2$1) / camera.zoom;
        levels[0].object.visible = true;
        let i, l;
        for (i = 1, l = levels.length; i < l; i++) {
          let levelDistance = levels[i].distance;
          if (levels[i].object.visible) {
            levelDistance -= levelDistance * levels[i].hysteresis;
          }
          if (distance >= levelDistance) {
            levels[i - 1].object.visible = false;
            levels[i].object.visible = true;
          } else {
            break;
          }
        }
        this._currentLevel = i - 1;
        for (; i < l; i++) {
          levels[i].object.visible = false;
        }
      }
    }
    toJSON(meta) {
      const data = super.toJSON(meta);
      if (this.autoUpdate === false) data.object.autoUpdate = false;
      data.object.levels = [];
      const levels = this.levels;
      for (let i = 0, l = levels.length; i < l; i++) {
        const level = levels[i];
        data.object.levels.push({
          object: level.object.uuid,
          distance: level.distance,
          hysteresis: level.hysteresis
        });
      }
      return data;
    }
  };
  var _basePosition = /* @__PURE__ */ new Vector3();
  var _skinIndex = /* @__PURE__ */ new Vector4();
  var _skinWeight = /* @__PURE__ */ new Vector4();
  var _vector3 = /* @__PURE__ */ new Vector3();
  var _matrix4 = /* @__PURE__ */ new Matrix4();
  var _vertex = /* @__PURE__ */ new Vector3();
  var _sphere$4 = /* @__PURE__ */ new Sphere();
  var _inverseMatrix$2 = /* @__PURE__ */ new Matrix4();
  var _ray$2 = /* @__PURE__ */ new Ray();
  var SkinnedMesh = class extends Mesh {
    constructor(geometry, material) {
      super(geometry, material);
      this.isSkinnedMesh = true;
      this.type = "SkinnedMesh";
      this.bindMode = AttachedBindMode;
      this.bindMatrix = new Matrix4();
      this.bindMatrixInverse = new Matrix4();
      this.boundingBox = null;
      this.boundingSphere = null;
    }
    computeBoundingBox() {
      const geometry = this.geometry;
      if (this.boundingBox === null) {
        this.boundingBox = new Box3();
      }
      this.boundingBox.makeEmpty();
      const positionAttribute = geometry.getAttribute("position");
      for (let i = 0; i < positionAttribute.count; i++) {
        this.getVertexPosition(i, _vertex);
        this.boundingBox.expandByPoint(_vertex);
      }
    }
    computeBoundingSphere() {
      const geometry = this.geometry;
      if (this.boundingSphere === null) {
        this.boundingSphere = new Sphere();
      }
      this.boundingSphere.makeEmpty();
      const positionAttribute = geometry.getAttribute("position");
      for (let i = 0; i < positionAttribute.count; i++) {
        this.getVertexPosition(i, _vertex);
        this.boundingSphere.expandByPoint(_vertex);
      }
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.bindMode = source.bindMode;
      this.bindMatrix.copy(source.bindMatrix);
      this.bindMatrixInverse.copy(source.bindMatrixInverse);
      this.skeleton = source.skeleton;
      if (source.boundingBox !== null) this.boundingBox = source.boundingBox.clone();
      if (source.boundingSphere !== null) this.boundingSphere = source.boundingSphere.clone();
      return this;
    }
    raycast(raycaster, intersects2) {
      const material = this.material;
      const matrixWorld = this.matrixWorld;
      if (material === void 0) return;
      if (this.boundingSphere === null) this.computeBoundingSphere();
      _sphere$4.copy(this.boundingSphere);
      _sphere$4.applyMatrix4(matrixWorld);
      if (raycaster.ray.intersectsSphere(_sphere$4) === false) return;
      _inverseMatrix$2.copy(matrixWorld).invert();
      _ray$2.copy(raycaster.ray).applyMatrix4(_inverseMatrix$2);
      if (this.boundingBox !== null) {
        if (_ray$2.intersectsBox(this.boundingBox) === false) return;
      }
      this._computeIntersections(raycaster, intersects2, _ray$2);
    }
    getVertexPosition(index, target) {
      super.getVertexPosition(index, target);
      this.applyBoneTransform(index, target);
      return target;
    }
    bind(skeleton, bindMatrix) {
      this.skeleton = skeleton;
      if (bindMatrix === void 0) {
        this.updateMatrixWorld(true);
        this.skeleton.calculateInverses();
        bindMatrix = this.matrixWorld;
      }
      this.bindMatrix.copy(bindMatrix);
      this.bindMatrixInverse.copy(bindMatrix).invert();
    }
    pose() {
      this.skeleton.pose();
    }
    normalizeSkinWeights() {
      const vector = new Vector4();
      const skinWeight = this.geometry.attributes.skinWeight;
      for (let i = 0, l = skinWeight.count; i < l; i++) {
        vector.fromBufferAttribute(skinWeight, i);
        const scale = 1 / vector.manhattanLength();
        if (scale !== Infinity) {
          vector.multiplyScalar(scale);
        } else {
          vector.set(1, 0, 0, 0);
        }
        skinWeight.setXYZW(i, vector.x, vector.y, vector.z, vector.w);
      }
    }
    updateMatrixWorld(force) {
      super.updateMatrixWorld(force);
      if (this.bindMode === AttachedBindMode) {
        this.bindMatrixInverse.copy(this.matrixWorld).invert();
      } else if (this.bindMode === DetachedBindMode) {
        this.bindMatrixInverse.copy(this.bindMatrix).invert();
      } else {
        console.warn("THREE.SkinnedMesh: Unrecognized bindMode: " + this.bindMode);
      }
    }
    applyBoneTransform(index, vector) {
      const skeleton = this.skeleton;
      const geometry = this.geometry;
      _skinIndex.fromBufferAttribute(geometry.attributes.skinIndex, index);
      _skinWeight.fromBufferAttribute(geometry.attributes.skinWeight, index);
      _basePosition.copy(vector).applyMatrix4(this.bindMatrix);
      vector.set(0, 0, 0);
      for (let i = 0; i < 4; i++) {
        const weight = _skinWeight.getComponent(i);
        if (weight !== 0) {
          const boneIndex = _skinIndex.getComponent(i);
          _matrix4.multiplyMatrices(skeleton.bones[boneIndex].matrixWorld, skeleton.boneInverses[boneIndex]);
          vector.addScaledVector(_vector3.copy(_basePosition).applyMatrix4(_matrix4), weight);
        }
      }
      return vector.applyMatrix4(this.bindMatrixInverse);
    }
    boneTransform(index, vector) {
      console.warn("THREE.SkinnedMesh: .boneTransform() was renamed to .applyBoneTransform() in r151.");
      return this.applyBoneTransform(index, vector);
    }
  };
  var Bone = class extends Object3D {
    constructor() {
      super();
      this.isBone = true;
      this.type = "Bone";
    }
  };
  var DataTexture = class extends Texture {
    constructor(data = null, width = 1, height = 1, format, type, mapping, wrapS, wrapT, magFilter = NearestFilter, minFilter = NearestFilter, anisotropy, colorSpace) {
      super(null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace);
      this.isDataTexture = true;
      this.image = { data, width, height };
      this.generateMipmaps = false;
      this.flipY = false;
      this.unpackAlignment = 1;
    }
  };
  var _offsetMatrix = /* @__PURE__ */ new Matrix4();
  var _identityMatrix$1 = /* @__PURE__ */ new Matrix4();
  var Skeleton = class _Skeleton {
    constructor(bones = [], boneInverses = []) {
      this.uuid = generateUUID();
      this.bones = bones.slice(0);
      this.boneInverses = boneInverses;
      this.boneMatrices = null;
      this.boneTexture = null;
      this.init();
    }
    init() {
      const bones = this.bones;
      const boneInverses = this.boneInverses;
      this.boneMatrices = new Float32Array(bones.length * 16);
      if (boneInverses.length === 0) {
        this.calculateInverses();
      } else {
        if (bones.length !== boneInverses.length) {
          console.warn("THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.");
          this.boneInverses = [];
          for (let i = 0, il = this.bones.length; i < il; i++) {
            this.boneInverses.push(new Matrix4());
          }
        }
      }
    }
    calculateInverses() {
      this.boneInverses.length = 0;
      for (let i = 0, il = this.bones.length; i < il; i++) {
        const inverse = new Matrix4();
        if (this.bones[i]) {
          inverse.copy(this.bones[i].matrixWorld).invert();
        }
        this.boneInverses.push(inverse);
      }
    }
    pose() {
      for (let i = 0, il = this.bones.length; i < il; i++) {
        const bone = this.bones[i];
        if (bone) {
          bone.matrixWorld.copy(this.boneInverses[i]).invert();
        }
      }
      for (let i = 0, il = this.bones.length; i < il; i++) {
        const bone = this.bones[i];
        if (bone) {
          if (bone.parent && bone.parent.isBone) {
            bone.matrix.copy(bone.parent.matrixWorld).invert();
            bone.matrix.multiply(bone.matrixWorld);
          } else {
            bone.matrix.copy(bone.matrixWorld);
          }
          bone.matrix.decompose(bone.position, bone.quaternion, bone.scale);
        }
      }
    }
    update() {
      const bones = this.bones;
      const boneInverses = this.boneInverses;
      const boneMatrices = this.boneMatrices;
      const boneTexture = this.boneTexture;
      for (let i = 0, il = bones.length; i < il; i++) {
        const matrix = bones[i] ? bones[i].matrixWorld : _identityMatrix$1;
        _offsetMatrix.multiplyMatrices(matrix, boneInverses[i]);
        _offsetMatrix.toArray(boneMatrices, i * 16);
      }
      if (boneTexture !== null) {
        boneTexture.needsUpdate = true;
      }
    }
    clone() {
      return new _Skeleton(this.bones, this.boneInverses);
    }
    computeBoneTexture() {
      let size = Math.sqrt(this.bones.length * 4);
      size = Math.ceil(size / 4) * 4;
      size = Math.max(size, 4);
      const boneMatrices = new Float32Array(size * size * 4);
      boneMatrices.set(this.boneMatrices);
      const boneTexture = new DataTexture(boneMatrices, size, size, RGBAFormat, FloatType);
      boneTexture.needsUpdate = true;
      this.boneMatrices = boneMatrices;
      this.boneTexture = boneTexture;
      return this;
    }
    getBoneByName(name) {
      for (let i = 0, il = this.bones.length; i < il; i++) {
        const bone = this.bones[i];
        if (bone.name === name) {
          return bone;
        }
      }
      return void 0;
    }
    dispose() {
      if (this.boneTexture !== null) {
        this.boneTexture.dispose();
        this.boneTexture = null;
      }
    }
    fromJSON(json, bones) {
      this.uuid = json.uuid;
      for (let i = 0, l = json.bones.length; i < l; i++) {
        const uuid = json.bones[i];
        let bone = bones[uuid];
        if (bone === void 0) {
          console.warn("THREE.Skeleton: No bone found with UUID:", uuid);
          bone = new Bone();
        }
        this.bones.push(bone);
        this.boneInverses.push(new Matrix4().fromArray(json.boneInverses[i]));
      }
      this.init();
      return this;
    }
    toJSON() {
      const data = {
        metadata: {
          version: 4.6,
          type: "Skeleton",
          generator: "Skeleton.toJSON"
        },
        bones: [],
        boneInverses: []
      };
      data.uuid = this.uuid;
      const bones = this.bones;
      const boneInverses = this.boneInverses;
      for (let i = 0, l = bones.length; i < l; i++) {
        const bone = bones[i];
        data.bones.push(bone.uuid);
        const boneInverse = boneInverses[i];
        data.boneInverses.push(boneInverse.toArray());
      }
      return data;
    }
  };
  var InstancedBufferAttribute = class extends BufferAttribute {
    constructor(array, itemSize, normalized, meshPerAttribute = 1) {
      super(array, itemSize, normalized);
      this.isInstancedBufferAttribute = true;
      this.meshPerAttribute = meshPerAttribute;
    }
    copy(source) {
      super.copy(source);
      this.meshPerAttribute = source.meshPerAttribute;
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.meshPerAttribute = this.meshPerAttribute;
      data.isInstancedBufferAttribute = true;
      return data;
    }
  };
  var _instanceLocalMatrix = /* @__PURE__ */ new Matrix4();
  var _instanceWorldMatrix = /* @__PURE__ */ new Matrix4();
  var _instanceIntersects = [];
  var _box3 = /* @__PURE__ */ new Box3();
  var _identity = /* @__PURE__ */ new Matrix4();
  var _mesh$1 = /* @__PURE__ */ new Mesh();
  var _sphere$3 = /* @__PURE__ */ new Sphere();
  var InstancedMesh = class extends Mesh {
    constructor(geometry, material, count) {
      super(geometry, material);
      this.isInstancedMesh = true;
      this.instanceMatrix = new InstancedBufferAttribute(new Float32Array(count * 16), 16);
      this.instanceColor = null;
      this.count = count;
      this.boundingBox = null;
      this.boundingSphere = null;
      for (let i = 0; i < count; i++) {
        this.setMatrixAt(i, _identity);
      }
    }
    computeBoundingBox() {
      const geometry = this.geometry;
      const count = this.count;
      if (this.boundingBox === null) {
        this.boundingBox = new Box3();
      }
      if (geometry.boundingBox === null) {
        geometry.computeBoundingBox();
      }
      this.boundingBox.makeEmpty();
      for (let i = 0; i < count; i++) {
        this.getMatrixAt(i, _instanceLocalMatrix);
        _box3.copy(geometry.boundingBox).applyMatrix4(_instanceLocalMatrix);
        this.boundingBox.union(_box3);
      }
    }
    computeBoundingSphere() {
      const geometry = this.geometry;
      const count = this.count;
      if (this.boundingSphere === null) {
        this.boundingSphere = new Sphere();
      }
      if (geometry.boundingSphere === null) {
        geometry.computeBoundingSphere();
      }
      this.boundingSphere.makeEmpty();
      for (let i = 0; i < count; i++) {
        this.getMatrixAt(i, _instanceLocalMatrix);
        _sphere$3.copy(geometry.boundingSphere).applyMatrix4(_instanceLocalMatrix);
        this.boundingSphere.union(_sphere$3);
      }
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.instanceMatrix.copy(source.instanceMatrix);
      if (source.instanceColor !== null) this.instanceColor = source.instanceColor.clone();
      this.count = source.count;
      if (source.boundingBox !== null) this.boundingBox = source.boundingBox.clone();
      if (source.boundingSphere !== null) this.boundingSphere = source.boundingSphere.clone();
      return this;
    }
    getColorAt(index, color) {
      color.fromArray(this.instanceColor.array, index * 3);
    }
    getMatrixAt(index, matrix) {
      matrix.fromArray(this.instanceMatrix.array, index * 16);
    }
    raycast(raycaster, intersects2) {
      const matrixWorld = this.matrixWorld;
      const raycastTimes = this.count;
      _mesh$1.geometry = this.geometry;
      _mesh$1.material = this.material;
      if (_mesh$1.material === void 0) return;
      if (this.boundingSphere === null) this.computeBoundingSphere();
      _sphere$3.copy(this.boundingSphere);
      _sphere$3.applyMatrix4(matrixWorld);
      if (raycaster.ray.intersectsSphere(_sphere$3) === false) return;
      for (let instanceId = 0; instanceId < raycastTimes; instanceId++) {
        this.getMatrixAt(instanceId, _instanceLocalMatrix);
        _instanceWorldMatrix.multiplyMatrices(matrixWorld, _instanceLocalMatrix);
        _mesh$1.matrixWorld = _instanceWorldMatrix;
        _mesh$1.raycast(raycaster, _instanceIntersects);
        for (let i = 0, l = _instanceIntersects.length; i < l; i++) {
          const intersect = _instanceIntersects[i];
          intersect.instanceId = instanceId;
          intersect.object = this;
          intersects2.push(intersect);
        }
        _instanceIntersects.length = 0;
      }
    }
    setColorAt(index, color) {
      if (this.instanceColor === null) {
        this.instanceColor = new InstancedBufferAttribute(new Float32Array(this.instanceMatrix.count * 3), 3);
      }
      color.toArray(this.instanceColor.array, index * 3);
    }
    setMatrixAt(index, matrix) {
      matrix.toArray(this.instanceMatrix.array, index * 16);
    }
    updateMorphTargets() {
    }
    dispose() {
      this.dispatchEvent({ type: "dispose" });
    }
  };
  function sortOpaque(a, b) {
    return a.z - b.z;
  }
  function sortTransparent(a, b) {
    return b.z - a.z;
  }
  var MultiDrawRenderList = class {
    constructor() {
      this.index = 0;
      this.pool = [];
      this.list = [];
    }
    push(drawRange, z) {
      const pool = this.pool;
      const list = this.list;
      if (this.index >= pool.length) {
        pool.push({
          start: -1,
          count: -1,
          z: -1
        });
      }
      const item = pool[this.index];
      list.push(item);
      this.index++;
      item.start = drawRange.start;
      item.count = drawRange.count;
      item.z = z;
    }
    reset() {
      this.list.length = 0;
      this.index = 0;
    }
  };
  var ID_ATTR_NAME = "batchId";
  var _matrix = /* @__PURE__ */ new Matrix4();
  var _invMatrixWorld = /* @__PURE__ */ new Matrix4();
  var _identityMatrix = /* @__PURE__ */ new Matrix4();
  var _projScreenMatrix$2 = /* @__PURE__ */ new Matrix4();
  var _frustum = /* @__PURE__ */ new Frustum();
  var _box$1 = /* @__PURE__ */ new Box3();
  var _sphere$2 = /* @__PURE__ */ new Sphere();
  var _vector$5 = /* @__PURE__ */ new Vector3();
  var _renderList = /* @__PURE__ */ new MultiDrawRenderList();
  var _mesh = /* @__PURE__ */ new Mesh();
  var _batchIntersects = [];
  function copyAttributeData(src, target, targetOffset = 0) {
    const itemSize = target.itemSize;
    if (src.isInterleavedBufferAttribute || src.array.constructor !== target.array.constructor) {
      const vertexCount = src.count;
      for (let i = 0; i < vertexCount; i++) {
        for (let c = 0; c < itemSize; c++) {
          target.setComponent(i + targetOffset, c, src.getComponent(i, c));
        }
      }
    } else {
      target.array.set(src.array, targetOffset * itemSize);
    }
    target.needsUpdate = true;
  }
  var BatchedMesh = class extends Mesh {
    get maxGeometryCount() {
      return this._maxGeometryCount;
    }
    constructor(maxGeometryCount, maxVertexCount, maxIndexCount = maxVertexCount * 2, material) {
      super(new BufferGeometry(), material);
      this.isBatchedMesh = true;
      this.perObjectFrustumCulled = true;
      this.sortObjects = true;
      this.boundingBox = null;
      this.boundingSphere = null;
      this.customSort = null;
      this._drawRanges = [];
      this._reservedRanges = [];
      this._visibility = [];
      this._active = [];
      this._bounds = [];
      this._maxGeometryCount = maxGeometryCount;
      this._maxVertexCount = maxVertexCount;
      this._maxIndexCount = maxIndexCount;
      this._geometryInitialized = false;
      this._geometryCount = 0;
      this._multiDrawCounts = new Int32Array(maxGeometryCount);
      this._multiDrawStarts = new Int32Array(maxGeometryCount);
      this._multiDrawCount = 0;
      this._visibilityChanged = true;
      this._matricesTexture = null;
      this._initMatricesTexture();
    }
    _initMatricesTexture() {
      let size = Math.sqrt(this._maxGeometryCount * 4);
      size = Math.ceil(size / 4) * 4;
      size = Math.max(size, 4);
      const matricesArray = new Float32Array(size * size * 4);
      const matricesTexture = new DataTexture(matricesArray, size, size, RGBAFormat, FloatType);
      this._matricesTexture = matricesTexture;
    }
    _initializeGeometry(reference) {
      const geometry = this.geometry;
      const maxVertexCount = this._maxVertexCount;
      const maxGeometryCount = this._maxGeometryCount;
      const maxIndexCount = this._maxIndexCount;
      if (this._geometryInitialized === false) {
        for (const attributeName in reference.attributes) {
          const srcAttribute = reference.getAttribute(attributeName);
          const { array, itemSize, normalized } = srcAttribute;
          const dstArray = new array.constructor(maxVertexCount * itemSize);
          const dstAttribute = new srcAttribute.constructor(dstArray, itemSize, normalized);
          dstAttribute.setUsage(srcAttribute.usage);
          geometry.setAttribute(attributeName, dstAttribute);
        }
        if (reference.getIndex() !== null) {
          const indexArray = maxVertexCount > 65536 ? new Uint32Array(maxIndexCount) : new Uint16Array(maxIndexCount);
          geometry.setIndex(new BufferAttribute(indexArray, 1));
        }
        const idArray = maxGeometryCount > 65536 ? new Uint32Array(maxVertexCount) : new Uint16Array(maxVertexCount);
        geometry.setAttribute(ID_ATTR_NAME, new BufferAttribute(idArray, 1));
        this._geometryInitialized = true;
      }
    }
    // Make sure the geometry is compatible with the existing combined geometry atributes
    _validateGeometry(geometry) {
      if (geometry.getAttribute(ID_ATTR_NAME)) {
        throw new Error(`BatchedMesh: Geometry cannot use attribute "${ID_ATTR_NAME}"`);
      }
      const batchGeometry = this.geometry;
      if (Boolean(geometry.getIndex()) !== Boolean(batchGeometry.getIndex())) {
        throw new Error('BatchedMesh: All geometries must consistently have "index".');
      }
      for (const attributeName in batchGeometry.attributes) {
        if (attributeName === ID_ATTR_NAME) {
          continue;
        }
        if (!geometry.hasAttribute(attributeName)) {
          throw new Error(`BatchedMesh: Added geometry missing "${attributeName}". All geometries must have consistent attributes.`);
        }
        const srcAttribute = geometry.getAttribute(attributeName);
        const dstAttribute = batchGeometry.getAttribute(attributeName);
        if (srcAttribute.itemSize !== dstAttribute.itemSize || srcAttribute.normalized !== dstAttribute.normalized) {
          throw new Error("BatchedMesh: All attributes must have a consistent itemSize and normalized value.");
        }
      }
    }
    setCustomSort(func) {
      this.customSort = func;
      return this;
    }
    computeBoundingBox() {
      if (this.boundingBox === null) {
        this.boundingBox = new Box3();
      }
      const geometryCount = this._geometryCount;
      const boundingBox = this.boundingBox;
      const active = this._active;
      boundingBox.makeEmpty();
      for (let i = 0; i < geometryCount; i++) {
        if (active[i] === false) continue;
        this.getMatrixAt(i, _matrix);
        this.getBoundingBoxAt(i, _box$1).applyMatrix4(_matrix);
        boundingBox.union(_box$1);
      }
    }
    computeBoundingSphere() {
      if (this.boundingSphere === null) {
        this.boundingSphere = new Sphere();
      }
      const geometryCount = this._geometryCount;
      const boundingSphere = this.boundingSphere;
      const active = this._active;
      boundingSphere.makeEmpty();
      for (let i = 0; i < geometryCount; i++) {
        if (active[i] === false) continue;
        this.getMatrixAt(i, _matrix);
        this.getBoundingSphereAt(i, _sphere$2).applyMatrix4(_matrix);
        boundingSphere.union(_sphere$2);
      }
    }
    addGeometry(geometry, vertexCount = -1, indexCount = -1) {
      this._initializeGeometry(geometry);
      this._validateGeometry(geometry);
      if (this._geometryCount >= this._maxGeometryCount) {
        throw new Error("BatchedMesh: Maximum geometry count reached.");
      }
      const reservedRange = {
        vertexStart: -1,
        vertexCount: -1,
        indexStart: -1,
        indexCount: -1
      };
      let lastRange = null;
      const reservedRanges = this._reservedRanges;
      const drawRanges = this._drawRanges;
      const bounds = this._bounds;
      if (this._geometryCount !== 0) {
        lastRange = reservedRanges[reservedRanges.length - 1];
      }
      if (vertexCount === -1) {
        reservedRange.vertexCount = geometry.getAttribute("position").count;
      } else {
        reservedRange.vertexCount = vertexCount;
      }
      if (lastRange === null) {
        reservedRange.vertexStart = 0;
      } else {
        reservedRange.vertexStart = lastRange.vertexStart + lastRange.vertexCount;
      }
      const index = geometry.getIndex();
      const hasIndex = index !== null;
      if (hasIndex) {
        if (indexCount === -1) {
          reservedRange.indexCount = index.count;
        } else {
          reservedRange.indexCount = indexCount;
        }
        if (lastRange === null) {
          reservedRange.indexStart = 0;
        } else {
          reservedRange.indexStart = lastRange.indexStart + lastRange.indexCount;
        }
      }
      if (reservedRange.indexStart !== -1 && reservedRange.indexStart + reservedRange.indexCount > this._maxIndexCount || reservedRange.vertexStart + reservedRange.vertexCount > this._maxVertexCount) {
        throw new Error("BatchedMesh: Reserved space request exceeds the maximum buffer size.");
      }
      const visibility = this._visibility;
      const active = this._active;
      const matricesTexture = this._matricesTexture;
      const matricesArray = this._matricesTexture.image.data;
      visibility.push(true);
      active.push(true);
      const geometryId = this._geometryCount;
      this._geometryCount++;
      _identityMatrix.toArray(matricesArray, geometryId * 16);
      matricesTexture.needsUpdate = true;
      reservedRanges.push(reservedRange);
      drawRanges.push({
        start: hasIndex ? reservedRange.indexStart : reservedRange.vertexStart,
        count: -1
      });
      bounds.push({
        boxInitialized: false,
        box: new Box3(),
        sphereInitialized: false,
        sphere: new Sphere()
      });
      const idAttribute = this.geometry.getAttribute(ID_ATTR_NAME);
      for (let i = 0; i < reservedRange.vertexCount; i++) {
        idAttribute.setX(reservedRange.vertexStart + i, geometryId);
      }
      idAttribute.needsUpdate = true;
      this.setGeometryAt(geometryId, geometry);
      return geometryId;
    }
    setGeometryAt(id, geometry) {
      if (id >= this._geometryCount) {
        throw new Error("BatchedMesh: Maximum geometry count reached.");
      }
      this._validateGeometry(geometry);
      const batchGeometry = this.geometry;
      const hasIndex = batchGeometry.getIndex() !== null;
      const dstIndex = batchGeometry.getIndex();
      const srcIndex = geometry.getIndex();
      const reservedRange = this._reservedRanges[id];
      if (hasIndex && srcIndex.count > reservedRange.indexCount || geometry.attributes.position.count > reservedRange.vertexCount) {
        throw new Error("BatchedMesh: Reserved space not large enough for provided geometry.");
      }
      const vertexStart = reservedRange.vertexStart;
      const vertexCount = reservedRange.vertexCount;
      for (const attributeName in batchGeometry.attributes) {
        if (attributeName === ID_ATTR_NAME) {
          continue;
        }
        const srcAttribute = geometry.getAttribute(attributeName);
        const dstAttribute = batchGeometry.getAttribute(attributeName);
        copyAttributeData(srcAttribute, dstAttribute, vertexStart);
        const itemSize = srcAttribute.itemSize;
        for (let i = srcAttribute.count, l = vertexCount; i < l; i++) {
          const index = vertexStart + i;
          for (let c = 0; c < itemSize; c++) {
            dstAttribute.setComponent(index, c, 0);
          }
        }
        dstAttribute.needsUpdate = true;
      }
      if (hasIndex) {
        const indexStart = reservedRange.indexStart;
        for (let i = 0; i < srcIndex.count; i++) {
          dstIndex.setX(indexStart + i, vertexStart + srcIndex.getX(i));
        }
        for (let i = srcIndex.count, l = reservedRange.indexCount; i < l; i++) {
          dstIndex.setX(indexStart + i, vertexStart);
        }
        dstIndex.needsUpdate = true;
      }
      const bound = this._bounds[id];
      if (geometry.boundingBox !== null) {
        bound.box.copy(geometry.boundingBox);
        bound.boxInitialized = true;
      } else {
        bound.boxInitialized = false;
      }
      if (geometry.boundingSphere !== null) {
        bound.sphere.copy(geometry.boundingSphere);
        bound.sphereInitialized = true;
      } else {
        bound.sphereInitialized = false;
      }
      const drawRange = this._drawRanges[id];
      const posAttr = geometry.getAttribute("position");
      drawRange.count = hasIndex ? srcIndex.count : posAttr.count;
      this._visibilityChanged = true;
      return id;
    }
    deleteGeometry(geometryId) {
      const active = this._active;
      if (geometryId >= active.length || active[geometryId] === false) {
        return this;
      }
      active[geometryId] = false;
      this._visibilityChanged = true;
      return this;
    }
    // get bounding box and compute it if it doesn't exist
    getBoundingBoxAt(id, target) {
      const active = this._active;
      if (active[id] === false) {
        return this;
      }
      const bound = this._bounds[id];
      const box = bound.box;
      const geometry = this.geometry;
      if (bound.boxInitialized === false) {
        box.makeEmpty();
        const index = geometry.index;
        const position = geometry.attributes.position;
        const drawRange = this._drawRanges[id];
        for (let i = drawRange.start, l = drawRange.start + drawRange.count; i < l; i++) {
          let iv = i;
          if (index) {
            iv = index.getX(iv);
          }
          box.expandByPoint(_vector$5.fromBufferAttribute(position, iv));
        }
        bound.boxInitialized = true;
      }
      target.copy(box);
      return target;
    }
    // get bounding sphere and compute it if it doesn't exist
    getBoundingSphereAt(id, target) {
      const active = this._active;
      if (active[id] === false) {
        return this;
      }
      const bound = this._bounds[id];
      const sphere = bound.sphere;
      const geometry = this.geometry;
      if (bound.sphereInitialized === false) {
        sphere.makeEmpty();
        this.getBoundingBoxAt(id, _box$1);
        _box$1.getCenter(sphere.center);
        const index = geometry.index;
        const position = geometry.attributes.position;
        const drawRange = this._drawRanges[id];
        let maxRadiusSq = 0;
        for (let i = drawRange.start, l = drawRange.start + drawRange.count; i < l; i++) {
          let iv = i;
          if (index) {
            iv = index.getX(iv);
          }
          _vector$5.fromBufferAttribute(position, iv);
          maxRadiusSq = Math.max(maxRadiusSq, sphere.center.distanceToSquared(_vector$5));
        }
        sphere.radius = Math.sqrt(maxRadiusSq);
        bound.sphereInitialized = true;
      }
      target.copy(sphere);
      return target;
    }
    setMatrixAt(geometryId, matrix) {
      const active = this._active;
      const matricesTexture = this._matricesTexture;
      const matricesArray = this._matricesTexture.image.data;
      const geometryCount = this._geometryCount;
      if (geometryId >= geometryCount || active[geometryId] === false) {
        return this;
      }
      matrix.toArray(matricesArray, geometryId * 16);
      matricesTexture.needsUpdate = true;
      return this;
    }
    getMatrixAt(geometryId, matrix) {
      const active = this._active;
      const matricesArray = this._matricesTexture.image.data;
      const geometryCount = this._geometryCount;
      if (geometryId >= geometryCount || active[geometryId] === false) {
        return null;
      }
      return matrix.fromArray(matricesArray, geometryId * 16);
    }
    setVisibleAt(geometryId, value) {
      const visibility = this._visibility;
      const active = this._active;
      const geometryCount = this._geometryCount;
      if (geometryId >= geometryCount || active[geometryId] === false || visibility[geometryId] === value) {
        return this;
      }
      visibility[geometryId] = value;
      this._visibilityChanged = true;
      return this;
    }
    getVisibleAt(geometryId) {
      const visibility = this._visibility;
      const active = this._active;
      const geometryCount = this._geometryCount;
      if (geometryId >= geometryCount || active[geometryId] === false) {
        return false;
      }
      return visibility[geometryId];
    }
    raycast(raycaster, intersects2) {
      const visibility = this._visibility;
      const active = this._active;
      const drawRanges = this._drawRanges;
      const geometryCount = this._geometryCount;
      const matrixWorld = this.matrixWorld;
      const batchGeometry = this.geometry;
      _mesh.material = this.material;
      _mesh.geometry.index = batchGeometry.index;
      _mesh.geometry.attributes = batchGeometry.attributes;
      if (_mesh.geometry.boundingBox === null) {
        _mesh.geometry.boundingBox = new Box3();
      }
      if (_mesh.geometry.boundingSphere === null) {
        _mesh.geometry.boundingSphere = new Sphere();
      }
      for (let i = 0; i < geometryCount; i++) {
        if (!visibility[i] || !active[i]) {
          continue;
        }
        const drawRange = drawRanges[i];
        _mesh.geometry.setDrawRange(drawRange.start, drawRange.count);
        this.getMatrixAt(i, _mesh.matrixWorld).premultiply(matrixWorld);
        this.getBoundingBoxAt(i, _mesh.geometry.boundingBox);
        this.getBoundingSphereAt(i, _mesh.geometry.boundingSphere);
        _mesh.raycast(raycaster, _batchIntersects);
        for (let j = 0, l = _batchIntersects.length; j < l; j++) {
          const intersect = _batchIntersects[j];
          intersect.object = this;
          intersect.batchId = i;
          intersects2.push(intersect);
        }
        _batchIntersects.length = 0;
      }
      _mesh.material = null;
      _mesh.geometry.index = null;
      _mesh.geometry.attributes = {};
      _mesh.geometry.setDrawRange(0, Infinity);
    }
    copy(source) {
      super.copy(source);
      this.geometry = source.geometry.clone();
      this.perObjectFrustumCulled = source.perObjectFrustumCulled;
      this.sortObjects = source.sortObjects;
      this.boundingBox = source.boundingBox !== null ? source.boundingBox.clone() : null;
      this.boundingSphere = source.boundingSphere !== null ? source.boundingSphere.clone() : null;
      this._drawRanges = source._drawRanges.map((range) => ({ ...range }));
      this._reservedRanges = source._reservedRanges.map((range) => ({ ...range }));
      this._visibility = source._visibility.slice();
      this._active = source._active.slice();
      this._bounds = source._bounds.map((bound) => ({
        boxInitialized: bound.boxInitialized,
        box: bound.box.clone(),
        sphereInitialized: bound.sphereInitialized,
        sphere: bound.sphere.clone()
      }));
      this._maxGeometryCount = source._maxGeometryCount;
      this._maxVertexCount = source._maxVertexCount;
      this._maxIndexCount = source._maxIndexCount;
      this._geometryInitialized = source._geometryInitialized;
      this._geometryCount = source._geometryCount;
      this._multiDrawCounts = source._multiDrawCounts.slice();
      this._multiDrawStarts = source._multiDrawStarts.slice();
      this._matricesTexture = source._matricesTexture.clone();
      this._matricesTexture.image.data = this._matricesTexture.image.slice();
      return this;
    }
    dispose() {
      this.geometry.dispose();
      this._matricesTexture.dispose();
      this._matricesTexture = null;
      return this;
    }
    onBeforeRender(renderer, scene, camera, geometry, material) {
      if (!this._visibilityChanged && !this.perObjectFrustumCulled && !this.sortObjects) {
        return;
      }
      const index = geometry.getIndex();
      const bytesPerElement = index === null ? 1 : index.array.BYTES_PER_ELEMENT;
      const visibility = this._visibility;
      const multiDrawStarts = this._multiDrawStarts;
      const multiDrawCounts = this._multiDrawCounts;
      const drawRanges = this._drawRanges;
      const perObjectFrustumCulled = this.perObjectFrustumCulled;
      if (perObjectFrustumCulled) {
        _projScreenMatrix$2.multiplyMatrices(camera.projectionMatrix, camera.matrixWorldInverse).multiply(this.matrixWorld);
        _frustum.setFromProjectionMatrix(
          _projScreenMatrix$2,
          renderer.isWebGPURenderer ? WebGPUCoordinateSystem : WebGLCoordinateSystem
        );
      }
      let count = 0;
      if (this.sortObjects) {
        _invMatrixWorld.copy(this.matrixWorld).invert();
        _vector$5.setFromMatrixPosition(camera.matrixWorld).applyMatrix4(_invMatrixWorld);
        for (let i = 0, l = visibility.length; i < l; i++) {
          if (visibility[i]) {
            this.getMatrixAt(i, _matrix);
            this.getBoundingSphereAt(i, _sphere$2).applyMatrix4(_matrix);
            let culled = false;
            if (perObjectFrustumCulled) {
              culled = !_frustum.intersectsSphere(_sphere$2);
            }
            if (!culled) {
              const z = _vector$5.distanceTo(_sphere$2.center);
              _renderList.push(drawRanges[i], z);
            }
          }
        }
        const list = _renderList.list;
        const customSort = this.customSort;
        if (customSort === null) {
          list.sort(material.transparent ? sortTransparent : sortOpaque);
        } else {
          customSort.call(this, list, camera);
        }
        for (let i = 0, l = list.length; i < l; i++) {
          const item = list[i];
          multiDrawStarts[count] = item.start * bytesPerElement;
          multiDrawCounts[count] = item.count;
          count++;
        }
        _renderList.reset();
      } else {
        for (let i = 0, l = visibility.length; i < l; i++) {
          if (visibility[i]) {
            let culled = false;
            if (perObjectFrustumCulled) {
              this.getMatrixAt(i, _matrix);
              this.getBoundingSphereAt(i, _sphere$2).applyMatrix4(_matrix);
              culled = !_frustum.intersectsSphere(_sphere$2);
            }
            if (!culled) {
              const range = drawRanges[i];
              multiDrawStarts[count] = range.start * bytesPerElement;
              multiDrawCounts[count] = range.count;
              count++;
            }
          }
        }
      }
      this._multiDrawCount = count;
      this._visibilityChanged = false;
    }
    onBeforeShadow(renderer, object, camera, shadowCamera, geometry, depthMaterial) {
      this.onBeforeRender(renderer, null, shadowCamera, geometry, depthMaterial);
    }
  };
  var LineBasicMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isLineBasicMaterial = true;
      this.type = "LineBasicMaterial";
      this.color = new Color(16777215);
      this.map = null;
      this.linewidth = 1;
      this.linecap = "round";
      this.linejoin = "round";
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.color.copy(source.color);
      this.map = source.map;
      this.linewidth = source.linewidth;
      this.linecap = source.linecap;
      this.linejoin = source.linejoin;
      this.fog = source.fog;
      return this;
    }
  };
  var _start$1 = /* @__PURE__ */ new Vector3();
  var _end$1 = /* @__PURE__ */ new Vector3();
  var _inverseMatrix$1 = /* @__PURE__ */ new Matrix4();
  var _ray$1 = /* @__PURE__ */ new Ray();
  var _sphere$1 = /* @__PURE__ */ new Sphere();
  var Line = class extends Object3D {
    constructor(geometry = new BufferGeometry(), material = new LineBasicMaterial()) {
      super();
      this.isLine = true;
      this.type = "Line";
      this.geometry = geometry;
      this.material = material;
      this.updateMorphTargets();
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.material = Array.isArray(source.material) ? source.material.slice() : source.material;
      this.geometry = source.geometry;
      return this;
    }
    computeLineDistances() {
      const geometry = this.geometry;
      if (geometry.index === null) {
        const positionAttribute = geometry.attributes.position;
        const lineDistances = [0];
        for (let i = 1, l = positionAttribute.count; i < l; i++) {
          _start$1.fromBufferAttribute(positionAttribute, i - 1);
          _end$1.fromBufferAttribute(positionAttribute, i);
          lineDistances[i] = lineDistances[i - 1];
          lineDistances[i] += _start$1.distanceTo(_end$1);
        }
        geometry.setAttribute("lineDistance", new Float32BufferAttribute(lineDistances, 1));
      } else {
        console.warn("THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.");
      }
      return this;
    }
    raycast(raycaster, intersects2) {
      const geometry = this.geometry;
      const matrixWorld = this.matrixWorld;
      const threshold = raycaster.params.Line.threshold;
      const drawRange = geometry.drawRange;
      if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
      _sphere$1.copy(geometry.boundingSphere);
      _sphere$1.applyMatrix4(matrixWorld);
      _sphere$1.radius += threshold;
      if (raycaster.ray.intersectsSphere(_sphere$1) === false) return;
      _inverseMatrix$1.copy(matrixWorld).invert();
      _ray$1.copy(raycaster.ray).applyMatrix4(_inverseMatrix$1);
      const localThreshold = threshold / ((this.scale.x + this.scale.y + this.scale.z) / 3);
      const localThresholdSq = localThreshold * localThreshold;
      const vStart = new Vector3();
      const vEnd = new Vector3();
      const interSegment = new Vector3();
      const interRay = new Vector3();
      const step = this.isLineSegments ? 2 : 1;
      const index = geometry.index;
      const attributes = geometry.attributes;
      const positionAttribute = attributes.position;
      if (index !== null) {
        const start = Math.max(0, drawRange.start);
        const end = Math.min(index.count, drawRange.start + drawRange.count);
        for (let i = start, l = end - 1; i < l; i += step) {
          const a = index.getX(i);
          const b = index.getX(i + 1);
          vStart.fromBufferAttribute(positionAttribute, a);
          vEnd.fromBufferAttribute(positionAttribute, b);
          const distSq = _ray$1.distanceSqToSegment(vStart, vEnd, interRay, interSegment);
          if (distSq > localThresholdSq) continue;
          interRay.applyMatrix4(this.matrixWorld);
          const distance = raycaster.ray.origin.distanceTo(interRay);
          if (distance < raycaster.near || distance > raycaster.far) continue;
          intersects2.push({
            distance,
            // What do we want? intersection point on the ray or on the segment??
            // point: raycaster.ray.at( distance ),
            point: interSegment.clone().applyMatrix4(this.matrixWorld),
            index: i,
            face: null,
            faceIndex: null,
            object: this
          });
        }
      } else {
        const start = Math.max(0, drawRange.start);
        const end = Math.min(positionAttribute.count, drawRange.start + drawRange.count);
        for (let i = start, l = end - 1; i < l; i += step) {
          vStart.fromBufferAttribute(positionAttribute, i);
          vEnd.fromBufferAttribute(positionAttribute, i + 1);
          const distSq = _ray$1.distanceSqToSegment(vStart, vEnd, interRay, interSegment);
          if (distSq > localThresholdSq) continue;
          interRay.applyMatrix4(this.matrixWorld);
          const distance = raycaster.ray.origin.distanceTo(interRay);
          if (distance < raycaster.near || distance > raycaster.far) continue;
          intersects2.push({
            distance,
            // What do we want? intersection point on the ray or on the segment??
            // point: raycaster.ray.at( distance ),
            point: interSegment.clone().applyMatrix4(this.matrixWorld),
            index: i,
            face: null,
            faceIndex: null,
            object: this
          });
        }
      }
    }
    updateMorphTargets() {
      const geometry = this.geometry;
      const morphAttributes = geometry.morphAttributes;
      const keys = Object.keys(morphAttributes);
      if (keys.length > 0) {
        const morphAttribute = morphAttributes[keys[0]];
        if (morphAttribute !== void 0) {
          this.morphTargetInfluences = [];
          this.morphTargetDictionary = {};
          for (let m = 0, ml = morphAttribute.length; m < ml; m++) {
            const name = morphAttribute[m].name || String(m);
            this.morphTargetInfluences.push(0);
            this.morphTargetDictionary[name] = m;
          }
        }
      }
    }
  };
  var _start = /* @__PURE__ */ new Vector3();
  var _end = /* @__PURE__ */ new Vector3();
  var LineSegments = class extends Line {
    constructor(geometry, material) {
      super(geometry, material);
      this.isLineSegments = true;
      this.type = "LineSegments";
    }
    computeLineDistances() {
      const geometry = this.geometry;
      if (geometry.index === null) {
        const positionAttribute = geometry.attributes.position;
        const lineDistances = [];
        for (let i = 0, l = positionAttribute.count; i < l; i += 2) {
          _start.fromBufferAttribute(positionAttribute, i);
          _end.fromBufferAttribute(positionAttribute, i + 1);
          lineDistances[i] = i === 0 ? 0 : lineDistances[i - 1];
          lineDistances[i + 1] = lineDistances[i] + _start.distanceTo(_end);
        }
        geometry.setAttribute("lineDistance", new Float32BufferAttribute(lineDistances, 1));
      } else {
        console.warn("THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.");
      }
      return this;
    }
  };
  var LineLoop = class extends Line {
    constructor(geometry, material) {
      super(geometry, material);
      this.isLineLoop = true;
      this.type = "LineLoop";
    }
  };
  var PointsMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isPointsMaterial = true;
      this.type = "PointsMaterial";
      this.color = new Color(16777215);
      this.map = null;
      this.alphaMap = null;
      this.size = 1;
      this.sizeAttenuation = true;
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.color.copy(source.color);
      this.map = source.map;
      this.alphaMap = source.alphaMap;
      this.size = source.size;
      this.sizeAttenuation = source.sizeAttenuation;
      this.fog = source.fog;
      return this;
    }
  };
  var _inverseMatrix = /* @__PURE__ */ new Matrix4();
  var _ray = /* @__PURE__ */ new Ray();
  var _sphere = /* @__PURE__ */ new Sphere();
  var _position$2 = /* @__PURE__ */ new Vector3();
  var Points = class extends Object3D {
    constructor(geometry = new BufferGeometry(), material = new PointsMaterial()) {
      super();
      this.isPoints = true;
      this.type = "Points";
      this.geometry = geometry;
      this.material = material;
      this.updateMorphTargets();
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.material = Array.isArray(source.material) ? source.material.slice() : source.material;
      this.geometry = source.geometry;
      return this;
    }
    raycast(raycaster, intersects2) {
      const geometry = this.geometry;
      const matrixWorld = this.matrixWorld;
      const threshold = raycaster.params.Points.threshold;
      const drawRange = geometry.drawRange;
      if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
      _sphere.copy(geometry.boundingSphere);
      _sphere.applyMatrix4(matrixWorld);
      _sphere.radius += threshold;
      if (raycaster.ray.intersectsSphere(_sphere) === false) return;
      _inverseMatrix.copy(matrixWorld).invert();
      _ray.copy(raycaster.ray).applyMatrix4(_inverseMatrix);
      const localThreshold = threshold / ((this.scale.x + this.scale.y + this.scale.z) / 3);
      const localThresholdSq = localThreshold * localThreshold;
      const index = geometry.index;
      const attributes = geometry.attributes;
      const positionAttribute = attributes.position;
      if (index !== null) {
        const start = Math.max(0, drawRange.start);
        const end = Math.min(index.count, drawRange.start + drawRange.count);
        for (let i = start, il = end; i < il; i++) {
          const a = index.getX(i);
          _position$2.fromBufferAttribute(positionAttribute, a);
          testPoint(_position$2, a, localThresholdSq, matrixWorld, raycaster, intersects2, this);
        }
      } else {
        const start = Math.max(0, drawRange.start);
        const end = Math.min(positionAttribute.count, drawRange.start + drawRange.count);
        for (let i = start, l = end; i < l; i++) {
          _position$2.fromBufferAttribute(positionAttribute, i);
          testPoint(_position$2, i, localThresholdSq, matrixWorld, raycaster, intersects2, this);
        }
      }
    }
    updateMorphTargets() {
      const geometry = this.geometry;
      const morphAttributes = geometry.morphAttributes;
      const keys = Object.keys(morphAttributes);
      if (keys.length > 0) {
        const morphAttribute = morphAttributes[keys[0]];
        if (morphAttribute !== void 0) {
          this.morphTargetInfluences = [];
          this.morphTargetDictionary = {};
          for (let m = 0, ml = morphAttribute.length; m < ml; m++) {
            const name = morphAttribute[m].name || String(m);
            this.morphTargetInfluences.push(0);
            this.morphTargetDictionary[name] = m;
          }
        }
      }
    }
  };
  function testPoint(point, index, localThresholdSq, matrixWorld, raycaster, intersects2, object) {
    const rayPointDistanceSq = _ray.distanceSqToPoint(point);
    if (rayPointDistanceSq < localThresholdSq) {
      const intersectPoint = new Vector3();
      _ray.closestPointToPoint(point, intersectPoint);
      intersectPoint.applyMatrix4(matrixWorld);
      const distance = raycaster.ray.origin.distanceTo(intersectPoint);
      if (distance < raycaster.near || distance > raycaster.far) return;
      intersects2.push({
        distance,
        distanceToRay: Math.sqrt(rayPointDistanceSq),
        point: intersectPoint,
        index,
        face: null,
        object
      });
    }
  }
  var VideoTexture = class extends Texture {
    constructor(video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) {
      super(video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);
      this.isVideoTexture = true;
      this.minFilter = minFilter !== void 0 ? minFilter : LinearFilter;
      this.magFilter = magFilter !== void 0 ? magFilter : LinearFilter;
      this.generateMipmaps = false;
      const scope = this;
      function updateVideo() {
        scope.needsUpdate = true;
        video.requestVideoFrameCallback(updateVideo);
      }
      if ("requestVideoFrameCallback" in video) {
        video.requestVideoFrameCallback(updateVideo);
      }
    }
    clone() {
      return new this.constructor(this.image).copy(this);
    }
    update() {
      const video = this.image;
      const hasVideoFrameCallback = "requestVideoFrameCallback" in video;
      if (hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA) {
        this.needsUpdate = true;
      }
    }
  };
  var FramebufferTexture = class extends Texture {
    constructor(width, height) {
      super({ width, height });
      this.isFramebufferTexture = true;
      this.magFilter = NearestFilter;
      this.minFilter = NearestFilter;
      this.generateMipmaps = false;
      this.needsUpdate = true;
    }
  };
  var CompressedTexture = class extends Texture {
    constructor(mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, colorSpace) {
      super(null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace);
      this.isCompressedTexture = true;
      this.image = { width, height };
      this.mipmaps = mipmaps;
      this.flipY = false;
      this.generateMipmaps = false;
    }
  };
  var CompressedArrayTexture = class extends CompressedTexture {
    constructor(mipmaps, width, height, depth, format, type) {
      super(mipmaps, width, height, format, type);
      this.isCompressedArrayTexture = true;
      this.image.depth = depth;
      this.wrapR = ClampToEdgeWrapping;
    }
  };
  var CompressedCubeTexture = class extends CompressedTexture {
    constructor(images, format, type) {
      super(void 0, images[0].width, images[0].height, format, type, CubeReflectionMapping);
      this.isCompressedCubeTexture = true;
      this.isCubeTexture = true;
      this.image = images;
    }
  };
  var CanvasTexture = class extends Texture {
    constructor(canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) {
      super(canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);
      this.isCanvasTexture = true;
      this.needsUpdate = true;
    }
  };
  var Curve = class {
    constructor() {
      this.type = "Curve";
      this.arcLengthDivisions = 200;
    }
    // Virtual base class method to overwrite and implement in subclasses
    //	- t [0 .. 1]
    getPoint() {
      console.warn("THREE.Curve: .getPoint() not implemented.");
      return null;
    }
    // Get point at relative position in curve according to arc length
    // - u [0 .. 1]
    getPointAt(u, optionalTarget) {
      const t = this.getUtoTmapping(u);
      return this.getPoint(t, optionalTarget);
    }
    // Get sequence of points using getPoint( t )
    getPoints(divisions = 5) {
      const points = [];
      for (let d = 0; d <= divisions; d++) {
        points.push(this.getPoint(d / divisions));
      }
      return points;
    }
    // Get sequence of points using getPointAt( u )
    getSpacedPoints(divisions = 5) {
      const points = [];
      for (let d = 0; d <= divisions; d++) {
        points.push(this.getPointAt(d / divisions));
      }
      return points;
    }
    // Get total curve arc length
    getLength() {
      const lengths = this.getLengths();
      return lengths[lengths.length - 1];
    }
    // Get list of cumulative segment lengths
    getLengths(divisions = this.arcLengthDivisions) {
      if (this.cacheArcLengths && this.cacheArcLengths.length === divisions + 1 && !this.needsUpdate) {
        return this.cacheArcLengths;
      }
      this.needsUpdate = false;
      const cache = [];
      let current, last = this.getPoint(0);
      let sum = 0;
      cache.push(0);
      for (let p = 1; p <= divisions; p++) {
        current = this.getPoint(p / divisions);
        sum += current.distanceTo(last);
        cache.push(sum);
        last = current;
      }
      this.cacheArcLengths = cache;
      return cache;
    }
    updateArcLengths() {
      this.needsUpdate = true;
      this.getLengths();
    }
    // Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant
    getUtoTmapping(u, distance) {
      const arcLengths = this.getLengths();
      let i = 0;
      const il = arcLengths.length;
      let targetArcLength;
      if (distance) {
        targetArcLength = distance;
      } else {
        targetArcLength = u * arcLengths[il - 1];
      }
      let low = 0, high = il - 1, comparison;
      while (low <= high) {
        i = Math.floor(low + (high - low) / 2);
        comparison = arcLengths[i] - targetArcLength;
        if (comparison < 0) {
          low = i + 1;
        } else if (comparison > 0) {
          high = i - 1;
        } else {
          high = i;
          break;
        }
      }
      i = high;
      if (arcLengths[i] === targetArcLength) {
        return i / (il - 1);
      }
      const lengthBefore = arcLengths[i];
      const lengthAfter = arcLengths[i + 1];
      const segmentLength = lengthAfter - lengthBefore;
      const segmentFraction = (targetArcLength - lengthBefore) / segmentLength;
      const t = (i + segmentFraction) / (il - 1);
      return t;
    }
    // Returns a unit vector tangent at t
    // In case any sub curve does not implement its tangent derivation,
    // 2 points a small delta apart will be used to find its gradient
    // which seems to give a reasonable approximation
    getTangent(t, optionalTarget) {
      const delta = 1e-4;
      let t1 = t - delta;
      let t2 = t + delta;
      if (t1 < 0) t1 = 0;
      if (t2 > 1) t2 = 1;
      const pt1 = this.getPoint(t1);
      const pt2 = this.getPoint(t2);
      const tangent = optionalTarget || (pt1.isVector2 ? new Vector2() : new Vector3());
      tangent.copy(pt2).sub(pt1).normalize();
      return tangent;
    }
    getTangentAt(u, optionalTarget) {
      const t = this.getUtoTmapping(u);
      return this.getTangent(t, optionalTarget);
    }
    computeFrenetFrames(segments, closed) {
      const normal = new Vector3();
      const tangents = [];
      const normals = [];
      const binormals = [];
      const vec = new Vector3();
      const mat = new Matrix4();
      for (let i = 0; i <= segments; i++) {
        const u = i / segments;
        tangents[i] = this.getTangentAt(u, new Vector3());
      }
      normals[0] = new Vector3();
      binormals[0] = new Vector3();
      let min = Number.MAX_VALUE;
      const tx = Math.abs(tangents[0].x);
      const ty = Math.abs(tangents[0].y);
      const tz = Math.abs(tangents[0].z);
      if (tx <= min) {
        min = tx;
        normal.set(1, 0, 0);
      }
      if (ty <= min) {
        min = ty;
        normal.set(0, 1, 0);
      }
      if (tz <= min) {
        normal.set(0, 0, 1);
      }
      vec.crossVectors(tangents[0], normal).normalize();
      normals[0].crossVectors(tangents[0], vec);
      binormals[0].crossVectors(tangents[0], normals[0]);
      for (let i = 1; i <= segments; i++) {
        normals[i] = normals[i - 1].clone();
        binormals[i] = binormals[i - 1].clone();
        vec.crossVectors(tangents[i - 1], tangents[i]);
        if (vec.length() > Number.EPSILON) {
          vec.normalize();
          const theta = Math.acos(clamp(tangents[i - 1].dot(tangents[i]), -1, 1));
          normals[i].applyMatrix4(mat.makeRotationAxis(vec, theta));
        }
        binormals[i].crossVectors(tangents[i], normals[i]);
      }
      if (closed === true) {
        let theta = Math.acos(clamp(normals[0].dot(normals[segments]), -1, 1));
        theta /= segments;
        if (tangents[0].dot(vec.crossVectors(normals[0], normals[segments])) > 0) {
          theta = -theta;
        }
        for (let i = 1; i <= segments; i++) {
          normals[i].applyMatrix4(mat.makeRotationAxis(tangents[i], theta * i));
          binormals[i].crossVectors(tangents[i], normals[i]);
        }
      }
      return {
        tangents,
        normals,
        binormals
      };
    }
    clone() {
      return new this.constructor().copy(this);
    }
    copy(source) {
      this.arcLengthDivisions = source.arcLengthDivisions;
      return this;
    }
    toJSON() {
      const data = {
        metadata: {
          version: 4.6,
          type: "Curve",
          generator: "Curve.toJSON"
        }
      };
      data.arcLengthDivisions = this.arcLengthDivisions;
      data.type = this.type;
      return data;
    }
    fromJSON(json) {
      this.arcLengthDivisions = json.arcLengthDivisions;
      return this;
    }
  };
  var EllipseCurve = class extends Curve {
    constructor(aX = 0, aY = 0, xRadius = 1, yRadius = 1, aStartAngle = 0, aEndAngle = Math.PI * 2, aClockwise = false, aRotation = 0) {
      super();
      this.isEllipseCurve = true;
      this.type = "EllipseCurve";
      this.aX = aX;
      this.aY = aY;
      this.xRadius = xRadius;
      this.yRadius = yRadius;
      this.aStartAngle = aStartAngle;
      this.aEndAngle = aEndAngle;
      this.aClockwise = aClockwise;
      this.aRotation = aRotation;
    }
    getPoint(t, optionalTarget) {
      const point = optionalTarget || new Vector2();
      const twoPi = Math.PI * 2;
      let deltaAngle = this.aEndAngle - this.aStartAngle;
      const samePoints = Math.abs(deltaAngle) < Number.EPSILON;
      while (deltaAngle < 0) deltaAngle += twoPi;
      while (deltaAngle > twoPi) deltaAngle -= twoPi;
      if (deltaAngle < Number.EPSILON) {
        if (samePoints) {
          deltaAngle = 0;
        } else {
          deltaAngle = twoPi;
        }
      }
      if (this.aClockwise === true && !samePoints) {
        if (deltaAngle === twoPi) {
          deltaAngle = -twoPi;
        } else {
          deltaAngle = deltaAngle - twoPi;
        }
      }
      const angle = this.aStartAngle + t * deltaAngle;
      let x = this.aX + this.xRadius * Math.cos(angle);
      let y = this.aY + this.yRadius * Math.sin(angle);
      if (this.aRotation !== 0) {
        const cos = Math.cos(this.aRotation);
        const sin = Math.sin(this.aRotation);
        const tx = x - this.aX;
        const ty = y - this.aY;
        x = tx * cos - ty * sin + this.aX;
        y = tx * sin + ty * cos + this.aY;
      }
      return point.set(x, y);
    }
    copy(source) {
      super.copy(source);
      this.aX = source.aX;
      this.aY = source.aY;
      this.xRadius = source.xRadius;
      this.yRadius = source.yRadius;
      this.aStartAngle = source.aStartAngle;
      this.aEndAngle = source.aEndAngle;
      this.aClockwise = source.aClockwise;
      this.aRotation = source.aRotation;
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.aX = this.aX;
      data.aY = this.aY;
      data.xRadius = this.xRadius;
      data.yRadius = this.yRadius;
      data.aStartAngle = this.aStartAngle;
      data.aEndAngle = this.aEndAngle;
      data.aClockwise = this.aClockwise;
      data.aRotation = this.aRotation;
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.aX = json.aX;
      this.aY = json.aY;
      this.xRadius = json.xRadius;
      this.yRadius = json.yRadius;
      this.aStartAngle = json.aStartAngle;
      this.aEndAngle = json.aEndAngle;
      this.aClockwise = json.aClockwise;
      this.aRotation = json.aRotation;
      return this;
    }
  };
  var ArcCurve = class extends EllipseCurve {
    constructor(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
      super(aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise);
      this.isArcCurve = true;
      this.type = "ArcCurve";
    }
  };
  function CubicPoly() {
    let c0 = 0, c1 = 0, c2 = 0, c3 = 0;
    function init(x0, x1, t0, t1) {
      c0 = x0;
      c1 = t0;
      c2 = -3 * x0 + 3 * x1 - 2 * t0 - t1;
      c3 = 2 * x0 - 2 * x1 + t0 + t1;
    }
    return {
      initCatmullRom: function(x0, x1, x2, x3, tension) {
        init(x1, x2, tension * (x2 - x0), tension * (x3 - x1));
      },
      initNonuniformCatmullRom: function(x0, x1, x2, x3, dt0, dt1, dt2) {
        let t1 = (x1 - x0) / dt0 - (x2 - x0) / (dt0 + dt1) + (x2 - x1) / dt1;
        let t2 = (x2 - x1) / dt1 - (x3 - x1) / (dt1 + dt2) + (x3 - x2) / dt2;
        t1 *= dt1;
        t2 *= dt1;
        init(x1, x2, t1, t2);
      },
      calc: function(t) {
        const t2 = t * t;
        const t3 = t2 * t;
        return c0 + c1 * t + c2 * t2 + c3 * t3;
      }
    };
  }
  var tmp = /* @__PURE__ */ new Vector3();
  var px = /* @__PURE__ */ new CubicPoly();
  var py = /* @__PURE__ */ new CubicPoly();
  var pz = /* @__PURE__ */ new CubicPoly();
  var CatmullRomCurve3 = class extends Curve {
    constructor(points = [], closed = false, curveType = "centripetal", tension = 0.5) {
      super();
      this.isCatmullRomCurve3 = true;
      this.type = "CatmullRomCurve3";
      this.points = points;
      this.closed = closed;
      this.curveType = curveType;
      this.tension = tension;
    }
    getPoint(t, optionalTarget = new Vector3()) {
      const point = optionalTarget;
      const points = this.points;
      const l = points.length;
      const p = (l - (this.closed ? 0 : 1)) * t;
      let intPoint = Math.floor(p);
      let weight = p - intPoint;
      if (this.closed) {
        intPoint += intPoint > 0 ? 0 : (Math.floor(Math.abs(intPoint) / l) + 1) * l;
      } else if (weight === 0 && intPoint === l - 1) {
        intPoint = l - 2;
        weight = 1;
      }
      let p0, p3;
      if (this.closed || intPoint > 0) {
        p0 = points[(intPoint - 1) % l];
      } else {
        tmp.subVectors(points[0], points[1]).add(points[0]);
        p0 = tmp;
      }
      const p1 = points[intPoint % l];
      const p2 = points[(intPoint + 1) % l];
      if (this.closed || intPoint + 2 < l) {
        p3 = points[(intPoint + 2) % l];
      } else {
        tmp.subVectors(points[l - 1], points[l - 2]).add(points[l - 1]);
        p3 = tmp;
      }
      if (this.curveType === "centripetal" || this.curveType === "chordal") {
        const pow = this.curveType === "chordal" ? 0.5 : 0.25;
        let dt0 = Math.pow(p0.distanceToSquared(p1), pow);
        let dt1 = Math.pow(p1.distanceToSquared(p2), pow);
        let dt2 = Math.pow(p2.distanceToSquared(p3), pow);
        if (dt1 < 1e-4) dt1 = 1;
        if (dt0 < 1e-4) dt0 = dt1;
        if (dt2 < 1e-4) dt2 = dt1;
        px.initNonuniformCatmullRom(p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2);
        py.initNonuniformCatmullRom(p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2);
        pz.initNonuniformCatmullRom(p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2);
      } else if (this.curveType === "catmullrom") {
        px.initCatmullRom(p0.x, p1.x, p2.x, p3.x, this.tension);
        py.initCatmullRom(p0.y, p1.y, p2.y, p3.y, this.tension);
        pz.initCatmullRom(p0.z, p1.z, p2.z, p3.z, this.tension);
      }
      point.set(
        px.calc(weight),
        py.calc(weight),
        pz.calc(weight)
      );
      return point;
    }
    copy(source) {
      super.copy(source);
      this.points = [];
      for (let i = 0, l = source.points.length; i < l; i++) {
        const point = source.points[i];
        this.points.push(point.clone());
      }
      this.closed = source.closed;
      this.curveType = source.curveType;
      this.tension = source.tension;
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.points = [];
      for (let i = 0, l = this.points.length; i < l; i++) {
        const point = this.points[i];
        data.points.push(point.toArray());
      }
      data.closed = this.closed;
      data.curveType = this.curveType;
      data.tension = this.tension;
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.points = [];
      for (let i = 0, l = json.points.length; i < l; i++) {
        const point = json.points[i];
        this.points.push(new Vector3().fromArray(point));
      }
      this.closed = json.closed;
      this.curveType = json.curveType;
      this.tension = json.tension;
      return this;
    }
  };
  function CatmullRom(t, p0, p1, p2, p3) {
    const v0 = (p2 - p0) * 0.5;
    const v1 = (p3 - p1) * 0.5;
    const t2 = t * t;
    const t3 = t * t2;
    return (2 * p1 - 2 * p2 + v0 + v1) * t3 + (-3 * p1 + 3 * p2 - 2 * v0 - v1) * t2 + v0 * t + p1;
  }
  function QuadraticBezierP0(t, p) {
    const k = 1 - t;
    return k * k * p;
  }
  function QuadraticBezierP1(t, p) {
    return 2 * (1 - t) * t * p;
  }
  function QuadraticBezierP2(t, p) {
    return t * t * p;
  }
  function QuadraticBezier(t, p0, p1, p2) {
    return QuadraticBezierP0(t, p0) + QuadraticBezierP1(t, p1) + QuadraticBezierP2(t, p2);
  }
  function CubicBezierP0(t, p) {
    const k = 1 - t;
    return k * k * k * p;
  }
  function CubicBezierP1(t, p) {
    const k = 1 - t;
    return 3 * k * k * t * p;
  }
  function CubicBezierP2(t, p) {
    return 3 * (1 - t) * t * t * p;
  }
  function CubicBezierP3(t, p) {
    return t * t * t * p;
  }
  function CubicBezier(t, p0, p1, p2, p3) {
    return CubicBezierP0(t, p0) + CubicBezierP1(t, p1) + CubicBezierP2(t, p2) + CubicBezierP3(t, p3);
  }
  var CubicBezierCurve = class extends Curve {
    constructor(v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2()) {
      super();
      this.isCubicBezierCurve = true;
      this.type = "CubicBezierCurve";
      this.v0 = v0;
      this.v1 = v1;
      this.v2 = v2;
      this.v3 = v3;
    }
    getPoint(t, optionalTarget = new Vector2()) {
      const point = optionalTarget;
      const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
      point.set(
        CubicBezier(t, v0.x, v1.x, v2.x, v3.x),
        CubicBezier(t, v0.y, v1.y, v2.y, v3.y)
      );
      return point;
    }
    copy(source) {
      super.copy(source);
      this.v0.copy(source.v0);
      this.v1.copy(source.v1);
      this.v2.copy(source.v2);
      this.v3.copy(source.v3);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.v0 = this.v0.toArray();
      data.v1 = this.v1.toArray();
      data.v2 = this.v2.toArray();
      data.v3 = this.v3.toArray();
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.v0.fromArray(json.v0);
      this.v1.fromArray(json.v1);
      this.v2.fromArray(json.v2);
      this.v3.fromArray(json.v3);
      return this;
    }
  };
  var CubicBezierCurve3 = class extends Curve {
    constructor(v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3()) {
      super();
      this.isCubicBezierCurve3 = true;
      this.type = "CubicBezierCurve3";
      this.v0 = v0;
      this.v1 = v1;
      this.v2 = v2;
      this.v3 = v3;
    }
    getPoint(t, optionalTarget = new Vector3()) {
      const point = optionalTarget;
      const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
      point.set(
        CubicBezier(t, v0.x, v1.x, v2.x, v3.x),
        CubicBezier(t, v0.y, v1.y, v2.y, v3.y),
        CubicBezier(t, v0.z, v1.z, v2.z, v3.z)
      );
      return point;
    }
    copy(source) {
      super.copy(source);
      this.v0.copy(source.v0);
      this.v1.copy(source.v1);
      this.v2.copy(source.v2);
      this.v3.copy(source.v3);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.v0 = this.v0.toArray();
      data.v1 = this.v1.toArray();
      data.v2 = this.v2.toArray();
      data.v3 = this.v3.toArray();
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.v0.fromArray(json.v0);
      this.v1.fromArray(json.v1);
      this.v2.fromArray(json.v2);
      this.v3.fromArray(json.v3);
      return this;
    }
  };
  var LineCurve = class extends Curve {
    constructor(v1 = new Vector2(), v2 = new Vector2()) {
      super();
      this.isLineCurve = true;
      this.type = "LineCurve";
      this.v1 = v1;
      this.v2 = v2;
    }
    getPoint(t, optionalTarget = new Vector2()) {
      const point = optionalTarget;
      if (t === 1) {
        point.copy(this.v2);
      } else {
        point.copy(this.v2).sub(this.v1);
        point.multiplyScalar(t).add(this.v1);
      }
      return point;
    }
    // Line curve is linear, so we can overwrite default getPointAt
    getPointAt(u, optionalTarget) {
      return this.getPoint(u, optionalTarget);
    }
    getTangent(t, optionalTarget = new Vector2()) {
      return optionalTarget.subVectors(this.v2, this.v1).normalize();
    }
    getTangentAt(u, optionalTarget) {
      return this.getTangent(u, optionalTarget);
    }
    copy(source) {
      super.copy(source);
      this.v1.copy(source.v1);
      this.v2.copy(source.v2);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.v1 = this.v1.toArray();
      data.v2 = this.v2.toArray();
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.v1.fromArray(json.v1);
      this.v2.fromArray(json.v2);
      return this;
    }
  };
  var LineCurve3 = class extends Curve {
    constructor(v1 = new Vector3(), v2 = new Vector3()) {
      super();
      this.isLineCurve3 = true;
      this.type = "LineCurve3";
      this.v1 = v1;
      this.v2 = v2;
    }
    getPoint(t, optionalTarget = new Vector3()) {
      const point = optionalTarget;
      if (t === 1) {
        point.copy(this.v2);
      } else {
        point.copy(this.v2).sub(this.v1);
        point.multiplyScalar(t).add(this.v1);
      }
      return point;
    }
    // Line curve is linear, so we can overwrite default getPointAt
    getPointAt(u, optionalTarget) {
      return this.getPoint(u, optionalTarget);
    }
    getTangent(t, optionalTarget = new Vector3()) {
      return optionalTarget.subVectors(this.v2, this.v1).normalize();
    }
    getTangentAt(u, optionalTarget) {
      return this.getTangent(u, optionalTarget);
    }
    copy(source) {
      super.copy(source);
      this.v1.copy(source.v1);
      this.v2.copy(source.v2);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.v1 = this.v1.toArray();
      data.v2 = this.v2.toArray();
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.v1.fromArray(json.v1);
      this.v2.fromArray(json.v2);
      return this;
    }
  };
  var QuadraticBezierCurve = class extends Curve {
    constructor(v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2()) {
      super();
      this.isQuadraticBezierCurve = true;
      this.type = "QuadraticBezierCurve";
      this.v0 = v0;
      this.v1 = v1;
      this.v2 = v2;
    }
    getPoint(t, optionalTarget = new Vector2()) {
      const point = optionalTarget;
      const v0 = this.v0, v1 = this.v1, v2 = this.v2;
      point.set(
        QuadraticBezier(t, v0.x, v1.x, v2.x),
        QuadraticBezier(t, v0.y, v1.y, v2.y)
      );
      return point;
    }
    copy(source) {
      super.copy(source);
      this.v0.copy(source.v0);
      this.v1.copy(source.v1);
      this.v2.copy(source.v2);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.v0 = this.v0.toArray();
      data.v1 = this.v1.toArray();
      data.v2 = this.v2.toArray();
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.v0.fromArray(json.v0);
      this.v1.fromArray(json.v1);
      this.v2.fromArray(json.v2);
      return this;
    }
  };
  var QuadraticBezierCurve3 = class extends Curve {
    constructor(v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3()) {
      super();
      this.isQuadraticBezierCurve3 = true;
      this.type = "QuadraticBezierCurve3";
      this.v0 = v0;
      this.v1 = v1;
      this.v2 = v2;
    }
    getPoint(t, optionalTarget = new Vector3()) {
      const point = optionalTarget;
      const v0 = this.v0, v1 = this.v1, v2 = this.v2;
      point.set(
        QuadraticBezier(t, v0.x, v1.x, v2.x),
        QuadraticBezier(t, v0.y, v1.y, v2.y),
        QuadraticBezier(t, v0.z, v1.z, v2.z)
      );
      return point;
    }
    copy(source) {
      super.copy(source);
      this.v0.copy(source.v0);
      this.v1.copy(source.v1);
      this.v2.copy(source.v2);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.v0 = this.v0.toArray();
      data.v1 = this.v1.toArray();
      data.v2 = this.v2.toArray();
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.v0.fromArray(json.v0);
      this.v1.fromArray(json.v1);
      this.v2.fromArray(json.v2);
      return this;
    }
  };
  var SplineCurve = class extends Curve {
    constructor(points = []) {
      super();
      this.isSplineCurve = true;
      this.type = "SplineCurve";
      this.points = points;
    }
    getPoint(t, optionalTarget = new Vector2()) {
      const point = optionalTarget;
      const points = this.points;
      const p = (points.length - 1) * t;
      const intPoint = Math.floor(p);
      const weight = p - intPoint;
      const p0 = points[intPoint === 0 ? intPoint : intPoint - 1];
      const p1 = points[intPoint];
      const p2 = points[intPoint > points.length - 2 ? points.length - 1 : intPoint + 1];
      const p3 = points[intPoint > points.length - 3 ? points.length - 1 : intPoint + 2];
      point.set(
        CatmullRom(weight, p0.x, p1.x, p2.x, p3.x),
        CatmullRom(weight, p0.y, p1.y, p2.y, p3.y)
      );
      return point;
    }
    copy(source) {
      super.copy(source);
      this.points = [];
      for (let i = 0, l = source.points.length; i < l; i++) {
        const point = source.points[i];
        this.points.push(point.clone());
      }
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.points = [];
      for (let i = 0, l = this.points.length; i < l; i++) {
        const point = this.points[i];
        data.points.push(point.toArray());
      }
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.points = [];
      for (let i = 0, l = json.points.length; i < l; i++) {
        const point = json.points[i];
        this.points.push(new Vector2().fromArray(point));
      }
      return this;
    }
  };
  var Curves = /* @__PURE__ */ Object.freeze({
    __proto__: null,
    ArcCurve,
    CatmullRomCurve3,
    CubicBezierCurve,
    CubicBezierCurve3,
    EllipseCurve,
    LineCurve,
    LineCurve3,
    QuadraticBezierCurve,
    QuadraticBezierCurve3,
    SplineCurve
  });
  var CurvePath = class extends Curve {
    constructor() {
      super();
      this.type = "CurvePath";
      this.curves = [];
      this.autoClose = false;
    }
    add(curve) {
      this.curves.push(curve);
    }
    closePath() {
      const startPoint = this.curves[0].getPoint(0);
      const endPoint = this.curves[this.curves.length - 1].getPoint(1);
      if (!startPoint.equals(endPoint)) {
        const lineType = startPoint.isVector2 === true ? "LineCurve" : "LineCurve3";
        this.curves.push(new Curves[lineType](endPoint, startPoint));
      }
      return this;
    }
    // To get accurate point with reference to
    // entire path distance at time t,
    // following has to be done:
    // 1. Length of each sub path have to be known
    // 2. Locate and identify type of curve
    // 3. Get t for the curve
    // 4. Return curve.getPointAt(t')
    getPoint(t, optionalTarget) {
      const d = t * this.getLength();
      const curveLengths = this.getCurveLengths();
      let i = 0;
      while (i < curveLengths.length) {
        if (curveLengths[i] >= d) {
          const diff = curveLengths[i] - d;
          const curve = this.curves[i];
          const segmentLength = curve.getLength();
          const u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;
          return curve.getPointAt(u, optionalTarget);
        }
        i++;
      }
      return null;
    }
    // We cannot use the default THREE.Curve getPoint() with getLength() because in
    // THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath
    // getPoint() depends on getLength
    getLength() {
      const lens = this.getCurveLengths();
      return lens[lens.length - 1];
    }
    // cacheLengths must be recalculated.
    updateArcLengths() {
      this.needsUpdate = true;
      this.cacheLengths = null;
      this.getCurveLengths();
    }
    // Compute lengths and cache them
    // We cannot overwrite getLengths() because UtoT mapping uses it.
    getCurveLengths() {
      if (this.cacheLengths && this.cacheLengths.length === this.curves.length) {
        return this.cacheLengths;
      }
      const lengths = [];
      let sums = 0;
      for (let i = 0, l = this.curves.length; i < l; i++) {
        sums += this.curves[i].getLength();
        lengths.push(sums);
      }
      this.cacheLengths = lengths;
      return lengths;
    }
    getSpacedPoints(divisions = 40) {
      const points = [];
      for (let i = 0; i <= divisions; i++) {
        points.push(this.getPoint(i / divisions));
      }
      if (this.autoClose) {
        points.push(points[0]);
      }
      return points;
    }
    getPoints(divisions = 12) {
      const points = [];
      let last;
      for (let i = 0, curves = this.curves; i < curves.length; i++) {
        const curve = curves[i];
        const resolution = curve.isEllipseCurve ? divisions * 2 : curve.isLineCurve || curve.isLineCurve3 ? 1 : curve.isSplineCurve ? divisions * curve.points.length : divisions;
        const pts = curve.getPoints(resolution);
        for (let j = 0; j < pts.length; j++) {
          const point = pts[j];
          if (last && last.equals(point)) continue;
          points.push(point);
          last = point;
        }
      }
      if (this.autoClose && points.length > 1 && !points[points.length - 1].equals(points[0])) {
        points.push(points[0]);
      }
      return points;
    }
    copy(source) {
      super.copy(source);
      this.curves = [];
      for (let i = 0, l = source.curves.length; i < l; i++) {
        const curve = source.curves[i];
        this.curves.push(curve.clone());
      }
      this.autoClose = source.autoClose;
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.autoClose = this.autoClose;
      data.curves = [];
      for (let i = 0, l = this.curves.length; i < l; i++) {
        const curve = this.curves[i];
        data.curves.push(curve.toJSON());
      }
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.autoClose = json.autoClose;
      this.curves = [];
      for (let i = 0, l = json.curves.length; i < l; i++) {
        const curve = json.curves[i];
        this.curves.push(new Curves[curve.type]().fromJSON(curve));
      }
      return this;
    }
  };
  var Path = class extends CurvePath {
    constructor(points) {
      super();
      this.type = "Path";
      this.currentPoint = new Vector2();
      if (points) {
        this.setFromPoints(points);
      }
    }
    setFromPoints(points) {
      this.moveTo(points[0].x, points[0].y);
      for (let i = 1, l = points.length; i < l; i++) {
        this.lineTo(points[i].x, points[i].y);
      }
      return this;
    }
    moveTo(x, y) {
      this.currentPoint.set(x, y);
      return this;
    }
    lineTo(x, y) {
      const curve = new LineCurve(this.currentPoint.clone(), new Vector2(x, y));
      this.curves.push(curve);
      this.currentPoint.set(x, y);
      return this;
    }
    quadraticCurveTo(aCPx, aCPy, aX, aY) {
      const curve = new QuadraticBezierCurve(
        this.currentPoint.clone(),
        new Vector2(aCPx, aCPy),
        new Vector2(aX, aY)
      );
      this.curves.push(curve);
      this.currentPoint.set(aX, aY);
      return this;
    }
    bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY) {
      const curve = new CubicBezierCurve(
        this.currentPoint.clone(),
        new Vector2(aCP1x, aCP1y),
        new Vector2(aCP2x, aCP2y),
        new Vector2(aX, aY)
      );
      this.curves.push(curve);
      this.currentPoint.set(aX, aY);
      return this;
    }
    splineThru(pts) {
      const npts = [this.currentPoint.clone()].concat(pts);
      const curve = new SplineCurve(npts);
      this.curves.push(curve);
      this.currentPoint.copy(pts[pts.length - 1]);
      return this;
    }
    arc(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
      const x0 = this.currentPoint.x;
      const y0 = this.currentPoint.y;
      this.absarc(
        aX + x0,
        aY + y0,
        aRadius,
        aStartAngle,
        aEndAngle,
        aClockwise
      );
      return this;
    }
    absarc(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
      this.absellipse(aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise);
      return this;
    }
    ellipse(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation) {
      const x0 = this.currentPoint.x;
      const y0 = this.currentPoint.y;
      this.absellipse(aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation);
      return this;
    }
    absellipse(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation) {
      const curve = new EllipseCurve(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation);
      if (this.curves.length > 0) {
        const firstPoint = curve.getPoint(0);
        if (!firstPoint.equals(this.currentPoint)) {
          this.lineTo(firstPoint.x, firstPoint.y);
        }
      }
      this.curves.push(curve);
      const lastPoint = curve.getPoint(1);
      this.currentPoint.copy(lastPoint);
      return this;
    }
    copy(source) {
      super.copy(source);
      this.currentPoint.copy(source.currentPoint);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.currentPoint = this.currentPoint.toArray();
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.currentPoint.fromArray(json.currentPoint);
      return this;
    }
  };
  var LatheGeometry = class _LatheGeometry extends BufferGeometry {
    constructor(points = [new Vector2(0, -0.5), new Vector2(0.5, 0), new Vector2(0, 0.5)], segments = 12, phiStart = 0, phiLength = Math.PI * 2) {
      super();
      this.type = "LatheGeometry";
      this.parameters = {
        points,
        segments,
        phiStart,
        phiLength
      };
      segments = Math.floor(segments);
      phiLength = clamp(phiLength, 0, Math.PI * 2);
      const indices = [];
      const vertices = [];
      const uvs = [];
      const initNormals = [];
      const normals = [];
      const inverseSegments = 1 / segments;
      const vertex2 = new Vector3();
      const uv = new Vector2();
      const normal = new Vector3();
      const curNormal = new Vector3();
      const prevNormal = new Vector3();
      let dx = 0;
      let dy = 0;
      for (let j = 0; j <= points.length - 1; j++) {
        switch (j) {
          case 0:
            dx = points[j + 1].x - points[j].x;
            dy = points[j + 1].y - points[j].y;
            normal.x = dy * 1;
            normal.y = -dx;
            normal.z = dy * 0;
            prevNormal.copy(normal);
            normal.normalize();
            initNormals.push(normal.x, normal.y, normal.z);
            break;
          case points.length - 1:
            initNormals.push(prevNormal.x, prevNormal.y, prevNormal.z);
            break;
          default:
            dx = points[j + 1].x - points[j].x;
            dy = points[j + 1].y - points[j].y;
            normal.x = dy * 1;
            normal.y = -dx;
            normal.z = dy * 0;
            curNormal.copy(normal);
            normal.x += prevNormal.x;
            normal.y += prevNormal.y;
            normal.z += prevNormal.z;
            normal.normalize();
            initNormals.push(normal.x, normal.y, normal.z);
            prevNormal.copy(curNormal);
        }
      }
      for (let i = 0; i <= segments; i++) {
        const phi = phiStart + i * inverseSegments * phiLength;
        const sin = Math.sin(phi);
        const cos = Math.cos(phi);
        for (let j = 0; j <= points.length - 1; j++) {
          vertex2.x = points[j].x * sin;
          vertex2.y = points[j].y;
          vertex2.z = points[j].x * cos;
          vertices.push(vertex2.x, vertex2.y, vertex2.z);
          uv.x = i / segments;
          uv.y = j / (points.length - 1);
          uvs.push(uv.x, uv.y);
          const x = initNormals[3 * j + 0] * sin;
          const y = initNormals[3 * j + 1];
          const z = initNormals[3 * j + 0] * cos;
          normals.push(x, y, z);
        }
      }
      for (let i = 0; i < segments; i++) {
        for (let j = 0; j < points.length - 1; j++) {
          const base = j + i * points.length;
          const a = base;
          const b = base + points.length;
          const c = base + points.length + 1;
          const d = base + 1;
          indices.push(a, b, d);
          indices.push(c, d, b);
        }
      }
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _LatheGeometry(data.points, data.segments, data.phiStart, data.phiLength);
    }
  };
  var CapsuleGeometry = class _CapsuleGeometry extends LatheGeometry {
    constructor(radius = 1, length = 1, capSegments = 4, radialSegments = 8) {
      const path = new Path();
      path.absarc(0, -length / 2, radius, Math.PI * 1.5, 0);
      path.absarc(0, length / 2, radius, 0, Math.PI * 0.5);
      super(path.getPoints(capSegments), radialSegments);
      this.type = "CapsuleGeometry";
      this.parameters = {
        radius,
        length,
        capSegments,
        radialSegments
      };
    }
    static fromJSON(data) {
      return new _CapsuleGeometry(data.radius, data.length, data.capSegments, data.radialSegments);
    }
  };
  var CircleGeometry = class _CircleGeometry extends BufferGeometry {
    constructor(radius = 1, segments = 32, thetaStart = 0, thetaLength = Math.PI * 2) {
      super();
      this.type = "CircleGeometry";
      this.parameters = {
        radius,
        segments,
        thetaStart,
        thetaLength
      };
      segments = Math.max(3, segments);
      const indices = [];
      const vertices = [];
      const normals = [];
      const uvs = [];
      const vertex2 = new Vector3();
      const uv = new Vector2();
      vertices.push(0, 0, 0);
      normals.push(0, 0, 1);
      uvs.push(0.5, 0.5);
      for (let s = 0, i = 3; s <= segments; s++, i += 3) {
        const segment = thetaStart + s / segments * thetaLength;
        vertex2.x = radius * Math.cos(segment);
        vertex2.y = radius * Math.sin(segment);
        vertices.push(vertex2.x, vertex2.y, vertex2.z);
        normals.push(0, 0, 1);
        uv.x = (vertices[i] / radius + 1) / 2;
        uv.y = (vertices[i + 1] / radius + 1) / 2;
        uvs.push(uv.x, uv.y);
      }
      for (let i = 1; i <= segments; i++) {
        indices.push(i, i + 1, 0);
      }
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _CircleGeometry(data.radius, data.segments, data.thetaStart, data.thetaLength);
    }
  };
  var CylinderGeometry = class _CylinderGeometry extends BufferGeometry {
    constructor(radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 32, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2) {
      super();
      this.type = "CylinderGeometry";
      this.parameters = {
        radiusTop,
        radiusBottom,
        height,
        radialSegments,
        heightSegments,
        openEnded,
        thetaStart,
        thetaLength
      };
      const scope = this;
      radialSegments = Math.floor(radialSegments);
      heightSegments = Math.floor(heightSegments);
      const indices = [];
      const vertices = [];
      const normals = [];
      const uvs = [];
      let index = 0;
      const indexArray = [];
      const halfHeight = height / 2;
      let groupStart = 0;
      generateTorso();
      if (openEnded === false) {
        if (radiusTop > 0) generateCap(true);
        if (radiusBottom > 0) generateCap(false);
      }
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
      function generateTorso() {
        const normal = new Vector3();
        const vertex2 = new Vector3();
        let groupCount = 0;
        const slope = (radiusBottom - radiusTop) / height;
        for (let y = 0; y <= heightSegments; y++) {
          const indexRow = [];
          const v = y / heightSegments;
          const radius = v * (radiusBottom - radiusTop) + radiusTop;
          for (let x = 0; x <= radialSegments; x++) {
            const u = x / radialSegments;
            const theta = u * thetaLength + thetaStart;
            const sinTheta = Math.sin(theta);
            const cosTheta = Math.cos(theta);
            vertex2.x = radius * sinTheta;
            vertex2.y = -v * height + halfHeight;
            vertex2.z = radius * cosTheta;
            vertices.push(vertex2.x, vertex2.y, vertex2.z);
            normal.set(sinTheta, slope, cosTheta).normalize();
            normals.push(normal.x, normal.y, normal.z);
            uvs.push(u, 1 - v);
            indexRow.push(index++);
          }
          indexArray.push(indexRow);
        }
        for (let x = 0; x < radialSegments; x++) {
          for (let y = 0; y < heightSegments; y++) {
            const a = indexArray[y][x];
            const b = indexArray[y + 1][x];
            const c = indexArray[y + 1][x + 1];
            const d = indexArray[y][x + 1];
            indices.push(a, b, d);
            indices.push(b, c, d);
            groupCount += 6;
          }
        }
        scope.addGroup(groupStart, groupCount, 0);
        groupStart += groupCount;
      }
      function generateCap(top) {
        const centerIndexStart = index;
        const uv = new Vector2();
        const vertex2 = new Vector3();
        let groupCount = 0;
        const radius = top === true ? radiusTop : radiusBottom;
        const sign2 = top === true ? 1 : -1;
        for (let x = 1; x <= radialSegments; x++) {
          vertices.push(0, halfHeight * sign2, 0);
          normals.push(0, sign2, 0);
          uvs.push(0.5, 0.5);
          index++;
        }
        const centerIndexEnd = index;
        for (let x = 0; x <= radialSegments; x++) {
          const u = x / radialSegments;
          const theta = u * thetaLength + thetaStart;
          const cosTheta = Math.cos(theta);
          const sinTheta = Math.sin(theta);
          vertex2.x = radius * sinTheta;
          vertex2.y = halfHeight * sign2;
          vertex2.z = radius * cosTheta;
          vertices.push(vertex2.x, vertex2.y, vertex2.z);
          normals.push(0, sign2, 0);
          uv.x = cosTheta * 0.5 + 0.5;
          uv.y = sinTheta * 0.5 * sign2 + 0.5;
          uvs.push(uv.x, uv.y);
          index++;
        }
        for (let x = 0; x < radialSegments; x++) {
          const c = centerIndexStart + x;
          const i = centerIndexEnd + x;
          if (top === true) {
            indices.push(i, i + 1, c);
          } else {
            indices.push(i + 1, i, c);
          }
          groupCount += 3;
        }
        scope.addGroup(groupStart, groupCount, top === true ? 1 : 2);
        groupStart += groupCount;
      }
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _CylinderGeometry(data.radiusTop, data.radiusBottom, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength);
    }
  };
  var ConeGeometry = class _ConeGeometry extends CylinderGeometry {
    constructor(radius = 1, height = 1, radialSegments = 32, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2) {
      super(0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength);
      this.type = "ConeGeometry";
      this.parameters = {
        radius,
        height,
        radialSegments,
        heightSegments,
        openEnded,
        thetaStart,
        thetaLength
      };
    }
    static fromJSON(data) {
      return new _ConeGeometry(data.radius, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength);
    }
  };
  var PolyhedronGeometry = class _PolyhedronGeometry extends BufferGeometry {
    constructor(vertices = [], indices = [], radius = 1, detail = 0) {
      super();
      this.type = "PolyhedronGeometry";
      this.parameters = {
        vertices,
        indices,
        radius,
        detail
      };
      const vertexBuffer = [];
      const uvBuffer = [];
      subdivide(detail);
      applyRadius(radius);
      generateUVs();
      this.setAttribute("position", new Float32BufferAttribute(vertexBuffer, 3));
      this.setAttribute("normal", new Float32BufferAttribute(vertexBuffer.slice(), 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvBuffer, 2));
      if (detail === 0) {
        this.computeVertexNormals();
      } else {
        this.normalizeNormals();
      }
      function subdivide(detail2) {
        const a = new Vector3();
        const b = new Vector3();
        const c = new Vector3();
        for (let i = 0; i < indices.length; i += 3) {
          getVertexByIndex(indices[i + 0], a);
          getVertexByIndex(indices[i + 1], b);
          getVertexByIndex(indices[i + 2], c);
          subdivideFace(a, b, c, detail2);
        }
      }
      function subdivideFace(a, b, c, detail2) {
        const cols = detail2 + 1;
        const v = [];
        for (let i = 0; i <= cols; i++) {
          v[i] = [];
          const aj = a.clone().lerp(c, i / cols);
          const bj = b.clone().lerp(c, i / cols);
          const rows = cols - i;
          for (let j = 0; j <= rows; j++) {
            if (j === 0 && i === cols) {
              v[i][j] = aj;
            } else {
              v[i][j] = aj.clone().lerp(bj, j / rows);
            }
          }
        }
        for (let i = 0; i < cols; i++) {
          for (let j = 0; j < 2 * (cols - i) - 1; j++) {
            const k = Math.floor(j / 2);
            if (j % 2 === 0) {
              pushVertex(v[i][k + 1]);
              pushVertex(v[i + 1][k]);
              pushVertex(v[i][k]);
            } else {
              pushVertex(v[i][k + 1]);
              pushVertex(v[i + 1][k + 1]);
              pushVertex(v[i + 1][k]);
            }
          }
        }
      }
      function applyRadius(radius2) {
        const vertex2 = new Vector3();
        for (let i = 0; i < vertexBuffer.length; i += 3) {
          vertex2.x = vertexBuffer[i + 0];
          vertex2.y = vertexBuffer[i + 1];
          vertex2.z = vertexBuffer[i + 2];
          vertex2.normalize().multiplyScalar(radius2);
          vertexBuffer[i + 0] = vertex2.x;
          vertexBuffer[i + 1] = vertex2.y;
          vertexBuffer[i + 2] = vertex2.z;
        }
      }
      function generateUVs() {
        const vertex2 = new Vector3();
        for (let i = 0; i < vertexBuffer.length; i += 3) {
          vertex2.x = vertexBuffer[i + 0];
          vertex2.y = vertexBuffer[i + 1];
          vertex2.z = vertexBuffer[i + 2];
          const u = azimuth(vertex2) / 2 / Math.PI + 0.5;
          const v = inclination(vertex2) / Math.PI + 0.5;
          uvBuffer.push(u, 1 - v);
        }
        correctUVs();
        correctSeam();
      }
      function correctSeam() {
        for (let i = 0; i < uvBuffer.length; i += 6) {
          const x0 = uvBuffer[i + 0];
          const x1 = uvBuffer[i + 2];
          const x2 = uvBuffer[i + 4];
          const max2 = Math.max(x0, x1, x2);
          const min = Math.min(x0, x1, x2);
          if (max2 > 0.9 && min < 0.1) {
            if (x0 < 0.2) uvBuffer[i + 0] += 1;
            if (x1 < 0.2) uvBuffer[i + 2] += 1;
            if (x2 < 0.2) uvBuffer[i + 4] += 1;
          }
        }
      }
      function pushVertex(vertex2) {
        vertexBuffer.push(vertex2.x, vertex2.y, vertex2.z);
      }
      function getVertexByIndex(index, vertex2) {
        const stride = index * 3;
        vertex2.x = vertices[stride + 0];
        vertex2.y = vertices[stride + 1];
        vertex2.z = vertices[stride + 2];
      }
      function correctUVs() {
        const a = new Vector3();
        const b = new Vector3();
        const c = new Vector3();
        const centroid = new Vector3();
        const uvA = new Vector2();
        const uvB = new Vector2();
        const uvC = new Vector2();
        for (let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6) {
          a.set(vertexBuffer[i + 0], vertexBuffer[i + 1], vertexBuffer[i + 2]);
          b.set(vertexBuffer[i + 3], vertexBuffer[i + 4], vertexBuffer[i + 5]);
          c.set(vertexBuffer[i + 6], vertexBuffer[i + 7], vertexBuffer[i + 8]);
          uvA.set(uvBuffer[j + 0], uvBuffer[j + 1]);
          uvB.set(uvBuffer[j + 2], uvBuffer[j + 3]);
          uvC.set(uvBuffer[j + 4], uvBuffer[j + 5]);
          centroid.copy(a).add(b).add(c).divideScalar(3);
          const azi = azimuth(centroid);
          correctUV(uvA, j + 0, a, azi);
          correctUV(uvB, j + 2, b, azi);
          correctUV(uvC, j + 4, c, azi);
        }
      }
      function correctUV(uv, stride, vector, azimuth2) {
        if (azimuth2 < 0 && uv.x === 1) {
          uvBuffer[stride] = uv.x - 1;
        }
        if (vector.x === 0 && vector.z === 0) {
          uvBuffer[stride] = azimuth2 / 2 / Math.PI + 0.5;
        }
      }
      function azimuth(vector) {
        return Math.atan2(vector.z, -vector.x);
      }
      function inclination(vector) {
        return Math.atan2(-vector.y, Math.sqrt(vector.x * vector.x + vector.z * vector.z));
      }
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _PolyhedronGeometry(data.vertices, data.indices, data.radius, data.details);
    }
  };
  var DodecahedronGeometry = class _DodecahedronGeometry extends PolyhedronGeometry {
    constructor(radius = 1, detail = 0) {
      const t = (1 + Math.sqrt(5)) / 2;
      const r = 1 / t;
      const vertices = [
        // (+/-1, +/-1, +/-1)
        -1,
        -1,
        -1,
        -1,
        -1,
        1,
        -1,
        1,
        -1,
        -1,
        1,
        1,
        1,
        -1,
        -1,
        1,
        -1,
        1,
        1,
        1,
        -1,
        1,
        1,
        1,
        // (0, +/-1/phi, +/-phi)
        0,
        -r,
        -t,
        0,
        -r,
        t,
        0,
        r,
        -t,
        0,
        r,
        t,
        // (+/-1/phi, +/-phi, 0)
        -r,
        -t,
        0,
        -r,
        t,
        0,
        r,
        -t,
        0,
        r,
        t,
        0,
        // (+/-phi, 0, +/-1/phi)
        -t,
        0,
        -r,
        t,
        0,
        -r,
        -t,
        0,
        r,
        t,
        0,
        r
      ];
      const indices = [
        3,
        11,
        7,
        3,
        7,
        15,
        3,
        15,
        13,
        7,
        19,
        17,
        7,
        17,
        6,
        7,
        6,
        15,
        17,
        4,
        8,
        17,
        8,
        10,
        17,
        10,
        6,
        8,
        0,
        16,
        8,
        16,
        2,
        8,
        2,
        10,
        0,
        12,
        1,
        0,
        1,
        18,
        0,
        18,
        16,
        6,
        10,
        2,
        6,
        2,
        13,
        6,
        13,
        15,
        2,
        16,
        18,
        2,
        18,
        3,
        2,
        3,
        13,
        18,
        1,
        9,
        18,
        9,
        11,
        18,
        11,
        3,
        4,
        14,
        12,
        4,
        12,
        0,
        4,
        0,
        8,
        11,
        9,
        5,
        11,
        5,
        19,
        11,
        19,
        7,
        19,
        5,
        14,
        19,
        14,
        4,
        19,
        4,
        17,
        1,
        12,
        14,
        1,
        14,
        5,
        1,
        5,
        9
      ];
      super(vertices, indices, radius, detail);
      this.type = "DodecahedronGeometry";
      this.parameters = {
        radius,
        detail
      };
    }
    static fromJSON(data) {
      return new _DodecahedronGeometry(data.radius, data.detail);
    }
  };
  var _v0 = /* @__PURE__ */ new Vector3();
  var _v1$1 = /* @__PURE__ */ new Vector3();
  var _normal = /* @__PURE__ */ new Vector3();
  var _triangle = /* @__PURE__ */ new Triangle();
  var EdgesGeometry = class extends BufferGeometry {
    constructor(geometry = null, thresholdAngle = 1) {
      super();
      this.type = "EdgesGeometry";
      this.parameters = {
        geometry,
        thresholdAngle
      };
      if (geometry !== null) {
        const precisionPoints = 4;
        const precision = Math.pow(10, precisionPoints);
        const thresholdDot = Math.cos(DEG2RAD * thresholdAngle);
        const indexAttr = geometry.getIndex();
        const positionAttr = geometry.getAttribute("position");
        const indexCount = indexAttr ? indexAttr.count : positionAttr.count;
        const indexArr = [0, 0, 0];
        const vertKeys = ["a", "b", "c"];
        const hashes = new Array(3);
        const edgeData = {};
        const vertices = [];
        for (let i = 0; i < indexCount; i += 3) {
          if (indexAttr) {
            indexArr[0] = indexAttr.getX(i);
            indexArr[1] = indexAttr.getX(i + 1);
            indexArr[2] = indexAttr.getX(i + 2);
          } else {
            indexArr[0] = i;
            indexArr[1] = i + 1;
            indexArr[2] = i + 2;
          }
          const { a, b, c } = _triangle;
          a.fromBufferAttribute(positionAttr, indexArr[0]);
          b.fromBufferAttribute(positionAttr, indexArr[1]);
          c.fromBufferAttribute(positionAttr, indexArr[2]);
          _triangle.getNormal(_normal);
          hashes[0] = `${Math.round(a.x * precision)},${Math.round(a.y * precision)},${Math.round(a.z * precision)}`;
          hashes[1] = `${Math.round(b.x * precision)},${Math.round(b.y * precision)},${Math.round(b.z * precision)}`;
          hashes[2] = `${Math.round(c.x * precision)},${Math.round(c.y * precision)},${Math.round(c.z * precision)}`;
          if (hashes[0] === hashes[1] || hashes[1] === hashes[2] || hashes[2] === hashes[0]) {
            continue;
          }
          for (let j = 0; j < 3; j++) {
            const jNext = (j + 1) % 3;
            const vecHash0 = hashes[j];
            const vecHash1 = hashes[jNext];
            const v0 = _triangle[vertKeys[j]];
            const v1 = _triangle[vertKeys[jNext]];
            const hash = `${vecHash0}_${vecHash1}`;
            const reverseHash = `${vecHash1}_${vecHash0}`;
            if (reverseHash in edgeData && edgeData[reverseHash]) {
              if (_normal.dot(edgeData[reverseHash].normal) <= thresholdDot) {
                vertices.push(v0.x, v0.y, v0.z);
                vertices.push(v1.x, v1.y, v1.z);
              }
              edgeData[reverseHash] = null;
            } else if (!(hash in edgeData)) {
              edgeData[hash] = {
                index0: indexArr[j],
                index1: indexArr[jNext],
                normal: _normal.clone()
              };
            }
          }
        }
        for (const key in edgeData) {
          if (edgeData[key]) {
            const { index0, index1 } = edgeData[key];
            _v0.fromBufferAttribute(positionAttr, index0);
            _v1$1.fromBufferAttribute(positionAttr, index1);
            vertices.push(_v0.x, _v0.y, _v0.z);
            vertices.push(_v1$1.x, _v1$1.y, _v1$1.z);
          }
        }
        this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      }
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
  };
  var Shape = class extends Path {
    constructor(points) {
      super(points);
      this.uuid = generateUUID();
      this.type = "Shape";
      this.holes = [];
    }
    getPointsHoles(divisions) {
      const holesPts = [];
      for (let i = 0, l = this.holes.length; i < l; i++) {
        holesPts[i] = this.holes[i].getPoints(divisions);
      }
      return holesPts;
    }
    // get points of shape and holes (keypoints based on segments parameter)
    extractPoints(divisions) {
      return {
        shape: this.getPoints(divisions),
        holes: this.getPointsHoles(divisions)
      };
    }
    copy(source) {
      super.copy(source);
      this.holes = [];
      for (let i = 0, l = source.holes.length; i < l; i++) {
        const hole = source.holes[i];
        this.holes.push(hole.clone());
      }
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.uuid = this.uuid;
      data.holes = [];
      for (let i = 0, l = this.holes.length; i < l; i++) {
        const hole = this.holes[i];
        data.holes.push(hole.toJSON());
      }
      return data;
    }
    fromJSON(json) {
      super.fromJSON(json);
      this.uuid = json.uuid;
      this.holes = [];
      for (let i = 0, l = json.holes.length; i < l; i++) {
        const hole = json.holes[i];
        this.holes.push(new Path().fromJSON(hole));
      }
      return this;
    }
  };
  var Earcut = {
    triangulate: function(data, holeIndices, dim = 2) {
      const hasHoles = holeIndices && holeIndices.length;
      const outerLen = hasHoles ? holeIndices[0] * dim : data.length;
      let outerNode = linkedList(data, 0, outerLen, dim, true);
      const triangles = [];
      if (!outerNode || outerNode.next === outerNode.prev) return triangles;
      let minX, minY, maxX, maxY, x, y, invSize;
      if (hasHoles) outerNode = eliminateHoles(data, holeIndices, outerNode, dim);
      if (data.length > 80 * dim) {
        minX = maxX = data[0];
        minY = maxY = data[1];
        for (let i = dim; i < outerLen; i += dim) {
          x = data[i];
          y = data[i + 1];
          if (x < minX) minX = x;
          if (y < minY) minY = y;
          if (x > maxX) maxX = x;
          if (y > maxY) maxY = y;
        }
        invSize = Math.max(maxX - minX, maxY - minY);
        invSize = invSize !== 0 ? 32767 / invSize : 0;
      }
      earcutLinked(outerNode, triangles, dim, minX, minY, invSize, 0);
      return triangles;
    }
  };
  function linkedList(data, start, end, dim, clockwise) {
    let i, last;
    if (clockwise === signedArea(data, start, end, dim) > 0) {
      for (i = start; i < end; i += dim) last = insertNode(i, data[i], data[i + 1], last);
    } else {
      for (i = end - dim; i >= start; i -= dim) last = insertNode(i, data[i], data[i + 1], last);
    }
    if (last && equals(last, last.next)) {
      removeNode(last);
      last = last.next;
    }
    return last;
  }
  function filterPoints(start, end) {
    if (!start) return start;
    if (!end) end = start;
    let p = start, again;
    do {
      again = false;
      if (!p.steiner && (equals(p, p.next) || area(p.prev, p, p.next) === 0)) {
        removeNode(p);
        p = end = p.prev;
        if (p === p.next) break;
        again = true;
      } else {
        p = p.next;
      }
    } while (again || p !== end);
    return end;
  }
  function earcutLinked(ear, triangles, dim, minX, minY, invSize, pass) {
    if (!ear) return;
    if (!pass && invSize) indexCurve(ear, minX, minY, invSize);
    let stop = ear, prev, next;
    while (ear.prev !== ear.next) {
      prev = ear.prev;
      next = ear.next;
      if (invSize ? isEarHashed(ear, minX, minY, invSize) : isEar(ear)) {
        triangles.push(prev.i / dim | 0);
        triangles.push(ear.i / dim | 0);
        triangles.push(next.i / dim | 0);
        removeNode(ear);
        ear = next.next;
        stop = next.next;
        continue;
      }
      ear = next;
      if (ear === stop) {
        if (!pass) {
          earcutLinked(filterPoints(ear), triangles, dim, minX, minY, invSize, 1);
        } else if (pass === 1) {
          ear = cureLocalIntersections(filterPoints(ear), triangles, dim);
          earcutLinked(ear, triangles, dim, minX, minY, invSize, 2);
        } else if (pass === 2) {
          splitEarcut(ear, triangles, dim, minX, minY, invSize);
        }
        break;
      }
    }
  }
  function isEar(ear) {
    const a = ear.prev, b = ear, c = ear.next;
    if (area(a, b, c) >= 0) return false;
    const ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;
    const x0 = ax < bx ? ax < cx ? ax : cx : bx < cx ? bx : cx, y0 = ay < by ? ay < cy ? ay : cy : by < cy ? by : cy, x1 = ax > bx ? ax > cx ? ax : cx : bx > cx ? bx : cx, y1 = ay > by ? ay > cy ? ay : cy : by > cy ? by : cy;
    let p = c.next;
    while (p !== a) {
      if (p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && pointInTriangle(ax, ay, bx, by, cx, cy, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
      p = p.next;
    }
    return true;
  }
  function isEarHashed(ear, minX, minY, invSize) {
    const a = ear.prev, b = ear, c = ear.next;
    if (area(a, b, c) >= 0) return false;
    const ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;
    const x0 = ax < bx ? ax < cx ? ax : cx : bx < cx ? bx : cx, y0 = ay < by ? ay < cy ? ay : cy : by < cy ? by : cy, x1 = ax > bx ? ax > cx ? ax : cx : bx > cx ? bx : cx, y1 = ay > by ? ay > cy ? ay : cy : by > cy ? by : cy;
    const minZ = zOrder(x0, y0, minX, minY, invSize), maxZ = zOrder(x1, y1, minX, minY, invSize);
    let p = ear.prevZ, n = ear.nextZ;
    while (p && p.z >= minZ && n && n.z <= maxZ) {
      if (p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c && pointInTriangle(ax, ay, bx, by, cx, cy, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
      p = p.prevZ;
      if (n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c && pointInTriangle(ax, ay, bx, by, cx, cy, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;
      n = n.nextZ;
    }
    while (p && p.z >= minZ) {
      if (p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c && pointInTriangle(ax, ay, bx, by, cx, cy, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
      p = p.prevZ;
    }
    while (n && n.z <= maxZ) {
      if (n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c && pointInTriangle(ax, ay, bx, by, cx, cy, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;
      n = n.nextZ;
    }
    return true;
  }
  function cureLocalIntersections(start, triangles, dim) {
    let p = start;
    do {
      const a = p.prev, b = p.next.next;
      if (!equals(a, b) && intersects(a, p, p.next, b) && locallyInside(a, b) && locallyInside(b, a)) {
        triangles.push(a.i / dim | 0);
        triangles.push(p.i / dim | 0);
        triangles.push(b.i / dim | 0);
        removeNode(p);
        removeNode(p.next);
        p = start = b;
      }
      p = p.next;
    } while (p !== start);
    return filterPoints(p);
  }
  function splitEarcut(start, triangles, dim, minX, minY, invSize) {
    let a = start;
    do {
      let b = a.next.next;
      while (b !== a.prev) {
        if (a.i !== b.i && isValidDiagonal(a, b)) {
          let c = splitPolygon(a, b);
          a = filterPoints(a, a.next);
          c = filterPoints(c, c.next);
          earcutLinked(a, triangles, dim, minX, minY, invSize, 0);
          earcutLinked(c, triangles, dim, minX, minY, invSize, 0);
          return;
        }
        b = b.next;
      }
      a = a.next;
    } while (a !== start);
  }
  function eliminateHoles(data, holeIndices, outerNode, dim) {
    const queue = [];
    let i, len, start, end, list;
    for (i = 0, len = holeIndices.length; i < len; i++) {
      start = holeIndices[i] * dim;
      end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;
      list = linkedList(data, start, end, dim, false);
      if (list === list.next) list.steiner = true;
      queue.push(getLeftmost(list));
    }
    queue.sort(compareX);
    for (i = 0; i < queue.length; i++) {
      outerNode = eliminateHole(queue[i], outerNode);
    }
    return outerNode;
  }
  function compareX(a, b) {
    return a.x - b.x;
  }
  function eliminateHole(hole, outerNode) {
    const bridge = findHoleBridge(hole, outerNode);
    if (!bridge) {
      return outerNode;
    }
    const bridgeReverse = splitPolygon(bridge, hole);
    filterPoints(bridgeReverse, bridgeReverse.next);
    return filterPoints(bridge, bridge.next);
  }
  function findHoleBridge(hole, outerNode) {
    let p = outerNode, qx = -Infinity, m;
    const hx = hole.x, hy = hole.y;
    do {
      if (hy <= p.y && hy >= p.next.y && p.next.y !== p.y) {
        const x = p.x + (hy - p.y) * (p.next.x - p.x) / (p.next.y - p.y);
        if (x <= hx && x > qx) {
          qx = x;
          m = p.x < p.next.x ? p : p.next;
          if (x === hx) return m;
        }
      }
      p = p.next;
    } while (p !== outerNode);
    if (!m) return null;
    const stop = m, mx = m.x, my = m.y;
    let tanMin = Infinity, tan;
    p = m;
    do {
      if (hx >= p.x && p.x >= mx && hx !== p.x && pointInTriangle(hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y)) {
        tan = Math.abs(hy - p.y) / (hx - p.x);
        if (locallyInside(p, hole) && (tan < tanMin || tan === tanMin && (p.x > m.x || p.x === m.x && sectorContainsSector(m, p)))) {
          m = p;
          tanMin = tan;
        }
      }
      p = p.next;
    } while (p !== stop);
    return m;
  }
  function sectorContainsSector(m, p) {
    return area(m.prev, m, p.prev) < 0 && area(p.next, m, m.next) < 0;
  }
  function indexCurve(start, minX, minY, invSize) {
    let p = start;
    do {
      if (p.z === 0) p.z = zOrder(p.x, p.y, minX, minY, invSize);
      p.prevZ = p.prev;
      p.nextZ = p.next;
      p = p.next;
    } while (p !== start);
    p.prevZ.nextZ = null;
    p.prevZ = null;
    sortLinked(p);
  }
  function sortLinked(list) {
    let i, p, q, e, tail, numMerges, pSize, qSize, inSize = 1;
    do {
      p = list;
      list = null;
      tail = null;
      numMerges = 0;
      while (p) {
        numMerges++;
        q = p;
        pSize = 0;
        for (i = 0; i < inSize; i++) {
          pSize++;
          q = q.nextZ;
          if (!q) break;
        }
        qSize = inSize;
        while (pSize > 0 || qSize > 0 && q) {
          if (pSize !== 0 && (qSize === 0 || !q || p.z <= q.z)) {
            e = p;
            p = p.nextZ;
            pSize--;
          } else {
            e = q;
            q = q.nextZ;
            qSize--;
          }
          if (tail) tail.nextZ = e;
          else list = e;
          e.prevZ = tail;
          tail = e;
        }
        p = q;
      }
      tail.nextZ = null;
      inSize *= 2;
    } while (numMerges > 1);
    return list;
  }
  function zOrder(x, y, minX, minY, invSize) {
    x = (x - minX) * invSize | 0;
    y = (y - minY) * invSize | 0;
    x = (x | x << 8) & 16711935;
    x = (x | x << 4) & 252645135;
    x = (x | x << 2) & 858993459;
    x = (x | x << 1) & 1431655765;
    y = (y | y << 8) & 16711935;
    y = (y | y << 4) & 252645135;
    y = (y | y << 2) & 858993459;
    y = (y | y << 1) & 1431655765;
    return x | y << 1;
  }
  function getLeftmost(start) {
    let p = start, leftmost = start;
    do {
      if (p.x < leftmost.x || p.x === leftmost.x && p.y < leftmost.y) leftmost = p;
      p = p.next;
    } while (p !== start);
    return leftmost;
  }
  function pointInTriangle(ax, ay, bx, by, cx, cy, px2, py2) {
    return (cx - px2) * (ay - py2) >= (ax - px2) * (cy - py2) && (ax - px2) * (by - py2) >= (bx - px2) * (ay - py2) && (bx - px2) * (cy - py2) >= (cx - px2) * (by - py2);
  }
  function isValidDiagonal(a, b) {
    return a.next.i !== b.i && a.prev.i !== b.i && !intersectsPolygon(a, b) && // dones't intersect other edges
    (locallyInside(a, b) && locallyInside(b, a) && middleInside(a, b) && // locally visible
    (area(a.prev, a, b.prev) || area(a, b.prev, b)) || // does not create opposite-facing sectors
    equals(a, b) && area(a.prev, a, a.next) > 0 && area(b.prev, b, b.next) > 0);
  }
  function area(p, q, r) {
    return (q.y - p.y) * (r.x - q.x) - (q.x - p.x) * (r.y - q.y);
  }
  function equals(p1, p2) {
    return p1.x === p2.x && p1.y === p2.y;
  }
  function intersects(p1, q1, p2, q2) {
    const o1 = sign(area(p1, q1, p2));
    const o2 = sign(area(p1, q1, q2));
    const o3 = sign(area(p2, q2, p1));
    const o4 = sign(area(p2, q2, q1));
    if (o1 !== o2 && o3 !== o4) return true;
    if (o1 === 0 && onSegment(p1, p2, q1)) return true;
    if (o2 === 0 && onSegment(p1, q2, q1)) return true;
    if (o3 === 0 && onSegment(p2, p1, q2)) return true;
    if (o4 === 0 && onSegment(p2, q1, q2)) return true;
    return false;
  }
  function onSegment(p, q, r) {
    return q.x <= Math.max(p.x, r.x) && q.x >= Math.min(p.x, r.x) && q.y <= Math.max(p.y, r.y) && q.y >= Math.min(p.y, r.y);
  }
  function sign(num) {
    return num > 0 ? 1 : num < 0 ? -1 : 0;
  }
  function intersectsPolygon(a, b) {
    let p = a;
    do {
      if (p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i && intersects(p, p.next, a, b)) return true;
      p = p.next;
    } while (p !== a);
    return false;
  }
  function locallyInside(a, b) {
    return area(a.prev, a, a.next) < 0 ? area(a, b, a.next) >= 0 && area(a, a.prev, b) >= 0 : area(a, b, a.prev) < 0 || area(a, a.next, b) < 0;
  }
  function middleInside(a, b) {
    let p = a, inside = false;
    const px2 = (a.x + b.x) / 2, py2 = (a.y + b.y) / 2;
    do {
      if (p.y > py2 !== p.next.y > py2 && p.next.y !== p.y && px2 < (p.next.x - p.x) * (py2 - p.y) / (p.next.y - p.y) + p.x)
        inside = !inside;
      p = p.next;
    } while (p !== a);
    return inside;
  }
  function splitPolygon(a, b) {
    const a2 = new Node(a.i, a.x, a.y), b2 = new Node(b.i, b.x, b.y), an = a.next, bp = b.prev;
    a.next = b;
    b.prev = a;
    a2.next = an;
    an.prev = a2;
    b2.next = a2;
    a2.prev = b2;
    bp.next = b2;
    b2.prev = bp;
    return b2;
  }
  function insertNode(i, x, y, last) {
    const p = new Node(i, x, y);
    if (!last) {
      p.prev = p;
      p.next = p;
    } else {
      p.next = last.next;
      p.prev = last;
      last.next.prev = p;
      last.next = p;
    }
    return p;
  }
  function removeNode(p) {
    p.next.prev = p.prev;
    p.prev.next = p.next;
    if (p.prevZ) p.prevZ.nextZ = p.nextZ;
    if (p.nextZ) p.nextZ.prevZ = p.prevZ;
  }
  function Node(i, x, y) {
    this.i = i;
    this.x = x;
    this.y = y;
    this.prev = null;
    this.next = null;
    this.z = 0;
    this.prevZ = null;
    this.nextZ = null;
    this.steiner = false;
  }
  function signedArea(data, start, end, dim) {
    let sum = 0;
    for (let i = start, j = end - dim; i < end; i += dim) {
      sum += (data[j] - data[i]) * (data[i + 1] + data[j + 1]);
      j = i;
    }
    return sum;
  }
  var ShapeUtils = class _ShapeUtils {
    // calculate area of the contour polygon
    static area(contour) {
      const n = contour.length;
      let a = 0;
      for (let p = n - 1, q = 0; q < n; p = q++) {
        a += contour[p].x * contour[q].y - contour[q].x * contour[p].y;
      }
      return a * 0.5;
    }
    static isClockWise(pts) {
      return _ShapeUtils.area(pts) < 0;
    }
    static triangulateShape(contour, holes) {
      const vertices = [];
      const holeIndices = [];
      const faces = [];
      removeDupEndPts(contour);
      addContour(vertices, contour);
      let holeIndex = contour.length;
      holes.forEach(removeDupEndPts);
      for (let i = 0; i < holes.length; i++) {
        holeIndices.push(holeIndex);
        holeIndex += holes[i].length;
        addContour(vertices, holes[i]);
      }
      const triangles = Earcut.triangulate(vertices, holeIndices);
      for (let i = 0; i < triangles.length; i += 3) {
        faces.push(triangles.slice(i, i + 3));
      }
      return faces;
    }
  };
  function removeDupEndPts(points) {
    const l = points.length;
    if (l > 2 && points[l - 1].equals(points[0])) {
      points.pop();
    }
  }
  function addContour(vertices, contour) {
    for (let i = 0; i < contour.length; i++) {
      vertices.push(contour[i].x);
      vertices.push(contour[i].y);
    }
  }
  var ExtrudeGeometry = class _ExtrudeGeometry extends BufferGeometry {
    constructor(shapes = new Shape([new Vector2(0.5, 0.5), new Vector2(-0.5, 0.5), new Vector2(-0.5, -0.5), new Vector2(0.5, -0.5)]), options = {}) {
      super();
      this.type = "ExtrudeGeometry";
      this.parameters = {
        shapes,
        options
      };
      shapes = Array.isArray(shapes) ? shapes : [shapes];
      const scope = this;
      const verticesArray = [];
      const uvArray = [];
      for (let i = 0, l = shapes.length; i < l; i++) {
        const shape = shapes[i];
        addShape(shape);
      }
      this.setAttribute("position", new Float32BufferAttribute(verticesArray, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvArray, 2));
      this.computeVertexNormals();
      function addShape(shape) {
        const placeholder = [];
        const curveSegments = options.curveSegments !== void 0 ? options.curveSegments : 12;
        const steps = options.steps !== void 0 ? options.steps : 1;
        const depth = options.depth !== void 0 ? options.depth : 1;
        let bevelEnabled = options.bevelEnabled !== void 0 ? options.bevelEnabled : true;
        let bevelThickness = options.bevelThickness !== void 0 ? options.bevelThickness : 0.2;
        let bevelSize = options.bevelSize !== void 0 ? options.bevelSize : bevelThickness - 0.1;
        let bevelOffset = options.bevelOffset !== void 0 ? options.bevelOffset : 0;
        let bevelSegments = options.bevelSegments !== void 0 ? options.bevelSegments : 3;
        const extrudePath = options.extrudePath;
        const uvgen = options.UVGenerator !== void 0 ? options.UVGenerator : WorldUVGenerator;
        let extrudePts, extrudeByPath = false;
        let splineTube, binormal, normal, position2;
        if (extrudePath) {
          extrudePts = extrudePath.getSpacedPoints(steps);
          extrudeByPath = true;
          bevelEnabled = false;
          splineTube = extrudePath.computeFrenetFrames(steps, false);
          binormal = new Vector3();
          normal = new Vector3();
          position2 = new Vector3();
        }
        if (!bevelEnabled) {
          bevelSegments = 0;
          bevelThickness = 0;
          bevelSize = 0;
          bevelOffset = 0;
        }
        const shapePoints = shape.extractPoints(curveSegments);
        let vertices = shapePoints.shape;
        const holes = shapePoints.holes;
        const reverse = !ShapeUtils.isClockWise(vertices);
        if (reverse) {
          vertices = vertices.reverse();
          for (let h = 0, hl = holes.length; h < hl; h++) {
            const ahole = holes[h];
            if (ShapeUtils.isClockWise(ahole)) {
              holes[h] = ahole.reverse();
            }
          }
        }
        const faces = ShapeUtils.triangulateShape(vertices, holes);
        const contour = vertices;
        for (let h = 0, hl = holes.length; h < hl; h++) {
          const ahole = holes[h];
          vertices = vertices.concat(ahole);
        }
        function scalePt2(pt, vec, size) {
          if (!vec) console.error("THREE.ExtrudeGeometry: vec does not exist");
          return pt.clone().addScaledVector(vec, size);
        }
        const vlen = vertices.length, flen = faces.length;
        function getBevelVec(inPt, inPrev, inNext) {
          let v_trans_x, v_trans_y, shrink_by;
          const v_prev_x = inPt.x - inPrev.x, v_prev_y = inPt.y - inPrev.y;
          const v_next_x = inNext.x - inPt.x, v_next_y = inNext.y - inPt.y;
          const v_prev_lensq = v_prev_x * v_prev_x + v_prev_y * v_prev_y;
          const collinear0 = v_prev_x * v_next_y - v_prev_y * v_next_x;
          if (Math.abs(collinear0) > Number.EPSILON) {
            const v_prev_len = Math.sqrt(v_prev_lensq);
            const v_next_len = Math.sqrt(v_next_x * v_next_x + v_next_y * v_next_y);
            const ptPrevShift_x = inPrev.x - v_prev_y / v_prev_len;
            const ptPrevShift_y = inPrev.y + v_prev_x / v_prev_len;
            const ptNextShift_x = inNext.x - v_next_y / v_next_len;
            const ptNextShift_y = inNext.y + v_next_x / v_next_len;
            const sf = ((ptNextShift_x - ptPrevShift_x) * v_next_y - (ptNextShift_y - ptPrevShift_y) * v_next_x) / (v_prev_x * v_next_y - v_prev_y * v_next_x);
            v_trans_x = ptPrevShift_x + v_prev_x * sf - inPt.x;
            v_trans_y = ptPrevShift_y + v_prev_y * sf - inPt.y;
            const v_trans_lensq = v_trans_x * v_trans_x + v_trans_y * v_trans_y;
            if (v_trans_lensq <= 2) {
              return new Vector2(v_trans_x, v_trans_y);
            } else {
              shrink_by = Math.sqrt(v_trans_lensq / 2);
            }
          } else {
            let direction_eq = false;
            if (v_prev_x > Number.EPSILON) {
              if (v_next_x > Number.EPSILON) {
                direction_eq = true;
              }
            } else {
              if (v_prev_x < -Number.EPSILON) {
                if (v_next_x < -Number.EPSILON) {
                  direction_eq = true;
                }
              } else {
                if (Math.sign(v_prev_y) === Math.sign(v_next_y)) {
                  direction_eq = true;
                }
              }
            }
            if (direction_eq) {
              v_trans_x = -v_prev_y;
              v_trans_y = v_prev_x;
              shrink_by = Math.sqrt(v_prev_lensq);
            } else {
              v_trans_x = v_prev_x;
              v_trans_y = v_prev_y;
              shrink_by = Math.sqrt(v_prev_lensq / 2);
            }
          }
          return new Vector2(v_trans_x / shrink_by, v_trans_y / shrink_by);
        }
        const contourMovements = [];
        for (let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i++, j++, k++) {
          if (j === il) j = 0;
          if (k === il) k = 0;
          contourMovements[i] = getBevelVec(contour[i], contour[j], contour[k]);
        }
        const holesMovements = [];
        let oneHoleMovements, verticesMovements = contourMovements.concat();
        for (let h = 0, hl = holes.length; h < hl; h++) {
          const ahole = holes[h];
          oneHoleMovements = [];
          for (let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i++, j++, k++) {
            if (j === il) j = 0;
            if (k === il) k = 0;
            oneHoleMovements[i] = getBevelVec(ahole[i], ahole[j], ahole[k]);
          }
          holesMovements.push(oneHoleMovements);
          verticesMovements = verticesMovements.concat(oneHoleMovements);
        }
        for (let b = 0; b < bevelSegments; b++) {
          const t = b / bevelSegments;
          const z = bevelThickness * Math.cos(t * Math.PI / 2);
          const bs2 = bevelSize * Math.sin(t * Math.PI / 2) + bevelOffset;
          for (let i = 0, il = contour.length; i < il; i++) {
            const vert = scalePt2(contour[i], contourMovements[i], bs2);
            v(vert.x, vert.y, -z);
          }
          for (let h = 0, hl = holes.length; h < hl; h++) {
            const ahole = holes[h];
            oneHoleMovements = holesMovements[h];
            for (let i = 0, il = ahole.length; i < il; i++) {
              const vert = scalePt2(ahole[i], oneHoleMovements[i], bs2);
              v(vert.x, vert.y, -z);
            }
          }
        }
        const bs = bevelSize + bevelOffset;
        for (let i = 0; i < vlen; i++) {
          const vert = bevelEnabled ? scalePt2(vertices[i], verticesMovements[i], bs) : vertices[i];
          if (!extrudeByPath) {
            v(vert.x, vert.y, 0);
          } else {
            normal.copy(splineTube.normals[0]).multiplyScalar(vert.x);
            binormal.copy(splineTube.binormals[0]).multiplyScalar(vert.y);
            position2.copy(extrudePts[0]).add(normal).add(binormal);
            v(position2.x, position2.y, position2.z);
          }
        }
        for (let s = 1; s <= steps; s++) {
          for (let i = 0; i < vlen; i++) {
            const vert = bevelEnabled ? scalePt2(vertices[i], verticesMovements[i], bs) : vertices[i];
            if (!extrudeByPath) {
              v(vert.x, vert.y, depth / steps * s);
            } else {
              normal.copy(splineTube.normals[s]).multiplyScalar(vert.x);
              binormal.copy(splineTube.binormals[s]).multiplyScalar(vert.y);
              position2.copy(extrudePts[s]).add(normal).add(binormal);
              v(position2.x, position2.y, position2.z);
            }
          }
        }
        for (let b = bevelSegments - 1; b >= 0; b--) {
          const t = b / bevelSegments;
          const z = bevelThickness * Math.cos(t * Math.PI / 2);
          const bs2 = bevelSize * Math.sin(t * Math.PI / 2) + bevelOffset;
          for (let i = 0, il = contour.length; i < il; i++) {
            const vert = scalePt2(contour[i], contourMovements[i], bs2);
            v(vert.x, vert.y, depth + z);
          }
          for (let h = 0, hl = holes.length; h < hl; h++) {
            const ahole = holes[h];
            oneHoleMovements = holesMovements[h];
            for (let i = 0, il = ahole.length; i < il; i++) {
              const vert = scalePt2(ahole[i], oneHoleMovements[i], bs2);
              if (!extrudeByPath) {
                v(vert.x, vert.y, depth + z);
              } else {
                v(vert.x, vert.y + extrudePts[steps - 1].y, extrudePts[steps - 1].x + z);
              }
            }
          }
        }
        buildLidFaces();
        buildSideFaces();
        function buildLidFaces() {
          const start = verticesArray.length / 3;
          if (bevelEnabled) {
            let layer = 0;
            let offset = vlen * layer;
            for (let i = 0; i < flen; i++) {
              const face = faces[i];
              f3(face[2] + offset, face[1] + offset, face[0] + offset);
            }
            layer = steps + bevelSegments * 2;
            offset = vlen * layer;
            for (let i = 0; i < flen; i++) {
              const face = faces[i];
              f3(face[0] + offset, face[1] + offset, face[2] + offset);
            }
          } else {
            for (let i = 0; i < flen; i++) {
              const face = faces[i];
              f3(face[2], face[1], face[0]);
            }
            for (let i = 0; i < flen; i++) {
              const face = faces[i];
              f3(face[0] + vlen * steps, face[1] + vlen * steps, face[2] + vlen * steps);
            }
          }
          scope.addGroup(start, verticesArray.length / 3 - start, 0);
        }
        function buildSideFaces() {
          const start = verticesArray.length / 3;
          let layeroffset = 0;
          sidewalls(contour, layeroffset);
          layeroffset += contour.length;
          for (let h = 0, hl = holes.length; h < hl; h++) {
            const ahole = holes[h];
            sidewalls(ahole, layeroffset);
            layeroffset += ahole.length;
          }
          scope.addGroup(start, verticesArray.length / 3 - start, 1);
        }
        function sidewalls(contour2, layeroffset) {
          let i = contour2.length;
          while (--i >= 0) {
            const j = i;
            let k = i - 1;
            if (k < 0) k = contour2.length - 1;
            for (let s = 0, sl = steps + bevelSegments * 2; s < sl; s++) {
              const slen1 = vlen * s;
              const slen2 = vlen * (s + 1);
              const a = layeroffset + j + slen1, b = layeroffset + k + slen1, c = layeroffset + k + slen2, d = layeroffset + j + slen2;
              f4(a, b, c, d);
            }
          }
        }
        function v(x, y, z) {
          placeholder.push(x);
          placeholder.push(y);
          placeholder.push(z);
        }
        function f3(a, b, c) {
          addVertex(a);
          addVertex(b);
          addVertex(c);
          const nextIndex = verticesArray.length / 3;
          const uvs = uvgen.generateTopUV(scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1);
          addUV(uvs[0]);
          addUV(uvs[1]);
          addUV(uvs[2]);
        }
        function f4(a, b, c, d) {
          addVertex(a);
          addVertex(b);
          addVertex(d);
          addVertex(b);
          addVertex(c);
          addVertex(d);
          const nextIndex = verticesArray.length / 3;
          const uvs = uvgen.generateSideWallUV(scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1);
          addUV(uvs[0]);
          addUV(uvs[1]);
          addUV(uvs[3]);
          addUV(uvs[1]);
          addUV(uvs[2]);
          addUV(uvs[3]);
        }
        function addVertex(index) {
          verticesArray.push(placeholder[index * 3 + 0]);
          verticesArray.push(placeholder[index * 3 + 1]);
          verticesArray.push(placeholder[index * 3 + 2]);
        }
        function addUV(vector2) {
          uvArray.push(vector2.x);
          uvArray.push(vector2.y);
        }
      }
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      const shapes = this.parameters.shapes;
      const options = this.parameters.options;
      return toJSON$1(shapes, options, data);
    }
    static fromJSON(data, shapes) {
      const geometryShapes = [];
      for (let j = 0, jl = data.shapes.length; j < jl; j++) {
        const shape = shapes[data.shapes[j]];
        geometryShapes.push(shape);
      }
      const extrudePath = data.options.extrudePath;
      if (extrudePath !== void 0) {
        data.options.extrudePath = new Curves[extrudePath.type]().fromJSON(extrudePath);
      }
      return new _ExtrudeGeometry(geometryShapes, data.options);
    }
  };
  var WorldUVGenerator = {
    generateTopUV: function(geometry, vertices, indexA, indexB, indexC) {
      const a_x = vertices[indexA * 3];
      const a_y = vertices[indexA * 3 + 1];
      const b_x = vertices[indexB * 3];
      const b_y = vertices[indexB * 3 + 1];
      const c_x = vertices[indexC * 3];
      const c_y = vertices[indexC * 3 + 1];
      return [
        new Vector2(a_x, a_y),
        new Vector2(b_x, b_y),
        new Vector2(c_x, c_y)
      ];
    },
    generateSideWallUV: function(geometry, vertices, indexA, indexB, indexC, indexD) {
      const a_x = vertices[indexA * 3];
      const a_y = vertices[indexA * 3 + 1];
      const a_z = vertices[indexA * 3 + 2];
      const b_x = vertices[indexB * 3];
      const b_y = vertices[indexB * 3 + 1];
      const b_z = vertices[indexB * 3 + 2];
      const c_x = vertices[indexC * 3];
      const c_y = vertices[indexC * 3 + 1];
      const c_z = vertices[indexC * 3 + 2];
      const d_x = vertices[indexD * 3];
      const d_y = vertices[indexD * 3 + 1];
      const d_z = vertices[indexD * 3 + 2];
      if (Math.abs(a_y - b_y) < Math.abs(a_x - b_x)) {
        return [
          new Vector2(a_x, 1 - a_z),
          new Vector2(b_x, 1 - b_z),
          new Vector2(c_x, 1 - c_z),
          new Vector2(d_x, 1 - d_z)
        ];
      } else {
        return [
          new Vector2(a_y, 1 - a_z),
          new Vector2(b_y, 1 - b_z),
          new Vector2(c_y, 1 - c_z),
          new Vector2(d_y, 1 - d_z)
        ];
      }
    }
  };
  function toJSON$1(shapes, options, data) {
    data.shapes = [];
    if (Array.isArray(shapes)) {
      for (let i = 0, l = shapes.length; i < l; i++) {
        const shape = shapes[i];
        data.shapes.push(shape.uuid);
      }
    } else {
      data.shapes.push(shapes.uuid);
    }
    data.options = Object.assign({}, options);
    if (options.extrudePath !== void 0) data.options.extrudePath = options.extrudePath.toJSON();
    return data;
  }
  var IcosahedronGeometry = class _IcosahedronGeometry extends PolyhedronGeometry {
    constructor(radius = 1, detail = 0) {
      const t = (1 + Math.sqrt(5)) / 2;
      const vertices = [
        -1,
        t,
        0,
        1,
        t,
        0,
        -1,
        -t,
        0,
        1,
        -t,
        0,
        0,
        -1,
        t,
        0,
        1,
        t,
        0,
        -1,
        -t,
        0,
        1,
        -t,
        t,
        0,
        -1,
        t,
        0,
        1,
        -t,
        0,
        -1,
        -t,
        0,
        1
      ];
      const indices = [
        0,
        11,
        5,
        0,
        5,
        1,
        0,
        1,
        7,
        0,
        7,
        10,
        0,
        10,
        11,
        1,
        5,
        9,
        5,
        11,
        4,
        11,
        10,
        2,
        10,
        7,
        6,
        7,
        1,
        8,
        3,
        9,
        4,
        3,
        4,
        2,
        3,
        2,
        6,
        3,
        6,
        8,
        3,
        8,
        9,
        4,
        9,
        5,
        2,
        4,
        11,
        6,
        2,
        10,
        8,
        6,
        7,
        9,
        8,
        1
      ];
      super(vertices, indices, radius, detail);
      this.type = "IcosahedronGeometry";
      this.parameters = {
        radius,
        detail
      };
    }
    static fromJSON(data) {
      return new _IcosahedronGeometry(data.radius, data.detail);
    }
  };
  var OctahedronGeometry = class _OctahedronGeometry extends PolyhedronGeometry {
    constructor(radius = 1, detail = 0) {
      const vertices = [
        1,
        0,
        0,
        -1,
        0,
        0,
        0,
        1,
        0,
        0,
        -1,
        0,
        0,
        0,
        1,
        0,
        0,
        -1
      ];
      const indices = [
        0,
        2,
        4,
        0,
        4,
        3,
        0,
        3,
        5,
        0,
        5,
        2,
        1,
        2,
        5,
        1,
        5,
        3,
        1,
        3,
        4,
        1,
        4,
        2
      ];
      super(vertices, indices, radius, detail);
      this.type = "OctahedronGeometry";
      this.parameters = {
        radius,
        detail
      };
    }
    static fromJSON(data) {
      return new _OctahedronGeometry(data.radius, data.detail);
    }
  };
  var RingGeometry = class _RingGeometry extends BufferGeometry {
    constructor(innerRadius = 0.5, outerRadius = 1, thetaSegments = 32, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2) {
      super();
      this.type = "RingGeometry";
      this.parameters = {
        innerRadius,
        outerRadius,
        thetaSegments,
        phiSegments,
        thetaStart,
        thetaLength
      };
      thetaSegments = Math.max(3, thetaSegments);
      phiSegments = Math.max(1, phiSegments);
      const indices = [];
      const vertices = [];
      const normals = [];
      const uvs = [];
      let radius = innerRadius;
      const radiusStep = (outerRadius - innerRadius) / phiSegments;
      const vertex2 = new Vector3();
      const uv = new Vector2();
      for (let j = 0; j <= phiSegments; j++) {
        for (let i = 0; i <= thetaSegments; i++) {
          const segment = thetaStart + i / thetaSegments * thetaLength;
          vertex2.x = radius * Math.cos(segment);
          vertex2.y = radius * Math.sin(segment);
          vertices.push(vertex2.x, vertex2.y, vertex2.z);
          normals.push(0, 0, 1);
          uv.x = (vertex2.x / outerRadius + 1) / 2;
          uv.y = (vertex2.y / outerRadius + 1) / 2;
          uvs.push(uv.x, uv.y);
        }
        radius += radiusStep;
      }
      for (let j = 0; j < phiSegments; j++) {
        const thetaSegmentLevel = j * (thetaSegments + 1);
        for (let i = 0; i < thetaSegments; i++) {
          const segment = i + thetaSegmentLevel;
          const a = segment;
          const b = segment + thetaSegments + 1;
          const c = segment + thetaSegments + 2;
          const d = segment + 1;
          indices.push(a, b, d);
          indices.push(b, c, d);
        }
      }
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _RingGeometry(data.innerRadius, data.outerRadius, data.thetaSegments, data.phiSegments, data.thetaStart, data.thetaLength);
    }
  };
  var ShapeGeometry = class _ShapeGeometry extends BufferGeometry {
    constructor(shapes = new Shape([new Vector2(0, 0.5), new Vector2(-0.5, -0.5), new Vector2(0.5, -0.5)]), curveSegments = 12) {
      super();
      this.type = "ShapeGeometry";
      this.parameters = {
        shapes,
        curveSegments
      };
      const indices = [];
      const vertices = [];
      const normals = [];
      const uvs = [];
      let groupStart = 0;
      let groupCount = 0;
      if (Array.isArray(shapes) === false) {
        addShape(shapes);
      } else {
        for (let i = 0; i < shapes.length; i++) {
          addShape(shapes[i]);
          this.addGroup(groupStart, groupCount, i);
          groupStart += groupCount;
          groupCount = 0;
        }
      }
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
      function addShape(shape) {
        const indexOffset = vertices.length / 3;
        const points = shape.extractPoints(curveSegments);
        let shapeVertices = points.shape;
        const shapeHoles = points.holes;
        if (ShapeUtils.isClockWise(shapeVertices) === false) {
          shapeVertices = shapeVertices.reverse();
        }
        for (let i = 0, l = shapeHoles.length; i < l; i++) {
          const shapeHole = shapeHoles[i];
          if (ShapeUtils.isClockWise(shapeHole) === true) {
            shapeHoles[i] = shapeHole.reverse();
          }
        }
        const faces = ShapeUtils.triangulateShape(shapeVertices, shapeHoles);
        for (let i = 0, l = shapeHoles.length; i < l; i++) {
          const shapeHole = shapeHoles[i];
          shapeVertices = shapeVertices.concat(shapeHole);
        }
        for (let i = 0, l = shapeVertices.length; i < l; i++) {
          const vertex2 = shapeVertices[i];
          vertices.push(vertex2.x, vertex2.y, 0);
          normals.push(0, 0, 1);
          uvs.push(vertex2.x, vertex2.y);
        }
        for (let i = 0, l = faces.length; i < l; i++) {
          const face = faces[i];
          const a = face[0] + indexOffset;
          const b = face[1] + indexOffset;
          const c = face[2] + indexOffset;
          indices.push(a, b, c);
          groupCount += 3;
        }
      }
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      const shapes = this.parameters.shapes;
      return toJSON(shapes, data);
    }
    static fromJSON(data, shapes) {
      const geometryShapes = [];
      for (let j = 0, jl = data.shapes.length; j < jl; j++) {
        const shape = shapes[data.shapes[j]];
        geometryShapes.push(shape);
      }
      return new _ShapeGeometry(geometryShapes, data.curveSegments);
    }
  };
  function toJSON(shapes, data) {
    data.shapes = [];
    if (Array.isArray(shapes)) {
      for (let i = 0, l = shapes.length; i < l; i++) {
        const shape = shapes[i];
        data.shapes.push(shape.uuid);
      }
    } else {
      data.shapes.push(shapes.uuid);
    }
    return data;
  }
  var SphereGeometry = class _SphereGeometry extends BufferGeometry {
    constructor(radius = 1, widthSegments = 32, heightSegments = 16, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI) {
      super();
      this.type = "SphereGeometry";
      this.parameters = {
        radius,
        widthSegments,
        heightSegments,
        phiStart,
        phiLength,
        thetaStart,
        thetaLength
      };
      widthSegments = Math.max(3, Math.floor(widthSegments));
      heightSegments = Math.max(2, Math.floor(heightSegments));
      const thetaEnd = Math.min(thetaStart + thetaLength, Math.PI);
      let index = 0;
      const grid = [];
      const vertex2 = new Vector3();
      const normal = new Vector3();
      const indices = [];
      const vertices = [];
      const normals = [];
      const uvs = [];
      for (let iy = 0; iy <= heightSegments; iy++) {
        const verticesRow = [];
        const v = iy / heightSegments;
        let uOffset = 0;
        if (iy === 0 && thetaStart === 0) {
          uOffset = 0.5 / widthSegments;
        } else if (iy === heightSegments && thetaEnd === Math.PI) {
          uOffset = -0.5 / widthSegments;
        }
        for (let ix = 0; ix <= widthSegments; ix++) {
          const u = ix / widthSegments;
          vertex2.x = -radius * Math.cos(phiStart + u * phiLength) * Math.sin(thetaStart + v * thetaLength);
          vertex2.y = radius * Math.cos(thetaStart + v * thetaLength);
          vertex2.z = radius * Math.sin(phiStart + u * phiLength) * Math.sin(thetaStart + v * thetaLength);
          vertices.push(vertex2.x, vertex2.y, vertex2.z);
          normal.copy(vertex2).normalize();
          normals.push(normal.x, normal.y, normal.z);
          uvs.push(u + uOffset, 1 - v);
          verticesRow.push(index++);
        }
        grid.push(verticesRow);
      }
      for (let iy = 0; iy < heightSegments; iy++) {
        for (let ix = 0; ix < widthSegments; ix++) {
          const a = grid[iy][ix + 1];
          const b = grid[iy][ix];
          const c = grid[iy + 1][ix];
          const d = grid[iy + 1][ix + 1];
          if (iy !== 0 || thetaStart > 0) indices.push(a, b, d);
          if (iy !== heightSegments - 1 || thetaEnd < Math.PI) indices.push(b, c, d);
        }
      }
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _SphereGeometry(data.radius, data.widthSegments, data.heightSegments, data.phiStart, data.phiLength, data.thetaStart, data.thetaLength);
    }
  };
  var TetrahedronGeometry = class _TetrahedronGeometry extends PolyhedronGeometry {
    constructor(radius = 1, detail = 0) {
      const vertices = [
        1,
        1,
        1,
        -1,
        -1,
        1,
        -1,
        1,
        -1,
        1,
        -1,
        -1
      ];
      const indices = [
        2,
        1,
        0,
        0,
        3,
        2,
        1,
        3,
        0,
        2,
        3,
        1
      ];
      super(vertices, indices, radius, detail);
      this.type = "TetrahedronGeometry";
      this.parameters = {
        radius,
        detail
      };
    }
    static fromJSON(data) {
      return new _TetrahedronGeometry(data.radius, data.detail);
    }
  };
  var TorusGeometry = class _TorusGeometry extends BufferGeometry {
    constructor(radius = 1, tube = 0.4, radialSegments = 12, tubularSegments = 48, arc = Math.PI * 2) {
      super();
      this.type = "TorusGeometry";
      this.parameters = {
        radius,
        tube,
        radialSegments,
        tubularSegments,
        arc
      };
      radialSegments = Math.floor(radialSegments);
      tubularSegments = Math.floor(tubularSegments);
      const indices = [];
      const vertices = [];
      const normals = [];
      const uvs = [];
      const center = new Vector3();
      const vertex2 = new Vector3();
      const normal = new Vector3();
      for (let j = 0; j <= radialSegments; j++) {
        for (let i = 0; i <= tubularSegments; i++) {
          const u = i / tubularSegments * arc;
          const v = j / radialSegments * Math.PI * 2;
          vertex2.x = (radius + tube * Math.cos(v)) * Math.cos(u);
          vertex2.y = (radius + tube * Math.cos(v)) * Math.sin(u);
          vertex2.z = tube * Math.sin(v);
          vertices.push(vertex2.x, vertex2.y, vertex2.z);
          center.x = radius * Math.cos(u);
          center.y = radius * Math.sin(u);
          normal.subVectors(vertex2, center).normalize();
          normals.push(normal.x, normal.y, normal.z);
          uvs.push(i / tubularSegments);
          uvs.push(j / radialSegments);
        }
      }
      for (let j = 1; j <= radialSegments; j++) {
        for (let i = 1; i <= tubularSegments; i++) {
          const a = (tubularSegments + 1) * j + i - 1;
          const b = (tubularSegments + 1) * (j - 1) + i - 1;
          const c = (tubularSegments + 1) * (j - 1) + i;
          const d = (tubularSegments + 1) * j + i;
          indices.push(a, b, d);
          indices.push(b, c, d);
        }
      }
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _TorusGeometry(data.radius, data.tube, data.radialSegments, data.tubularSegments, data.arc);
    }
  };
  var TorusKnotGeometry = class _TorusKnotGeometry extends BufferGeometry {
    constructor(radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3) {
      super();
      this.type = "TorusKnotGeometry";
      this.parameters = {
        radius,
        tube,
        tubularSegments,
        radialSegments,
        p,
        q
      };
      tubularSegments = Math.floor(tubularSegments);
      radialSegments = Math.floor(radialSegments);
      const indices = [];
      const vertices = [];
      const normals = [];
      const uvs = [];
      const vertex2 = new Vector3();
      const normal = new Vector3();
      const P1 = new Vector3();
      const P2 = new Vector3();
      const B = new Vector3();
      const T = new Vector3();
      const N = new Vector3();
      for (let i = 0; i <= tubularSegments; ++i) {
        const u = i / tubularSegments * p * Math.PI * 2;
        calculatePositionOnCurve(u, p, q, radius, P1);
        calculatePositionOnCurve(u + 0.01, p, q, radius, P2);
        T.subVectors(P2, P1);
        N.addVectors(P2, P1);
        B.crossVectors(T, N);
        N.crossVectors(B, T);
        B.normalize();
        N.normalize();
        for (let j = 0; j <= radialSegments; ++j) {
          const v = j / radialSegments * Math.PI * 2;
          const cx = -tube * Math.cos(v);
          const cy = tube * Math.sin(v);
          vertex2.x = P1.x + (cx * N.x + cy * B.x);
          vertex2.y = P1.y + (cx * N.y + cy * B.y);
          vertex2.z = P1.z + (cx * N.z + cy * B.z);
          vertices.push(vertex2.x, vertex2.y, vertex2.z);
          normal.subVectors(vertex2, P1).normalize();
          normals.push(normal.x, normal.y, normal.z);
          uvs.push(i / tubularSegments);
          uvs.push(j / radialSegments);
        }
      }
      for (let j = 1; j <= tubularSegments; j++) {
        for (let i = 1; i <= radialSegments; i++) {
          const a = (radialSegments + 1) * (j - 1) + (i - 1);
          const b = (radialSegments + 1) * j + (i - 1);
          const c = (radialSegments + 1) * j + i;
          const d = (radialSegments + 1) * (j - 1) + i;
          indices.push(a, b, d);
          indices.push(b, c, d);
        }
      }
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
      function calculatePositionOnCurve(u, p2, q2, radius2, position) {
        const cu = Math.cos(u);
        const su = Math.sin(u);
        const quOverP = q2 / p2 * u;
        const cs = Math.cos(quOverP);
        position.x = radius2 * (2 + cs) * 0.5 * cu;
        position.y = radius2 * (2 + cs) * su * 0.5;
        position.z = radius2 * Math.sin(quOverP) * 0.5;
      }
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    static fromJSON(data) {
      return new _TorusKnotGeometry(data.radius, data.tube, data.tubularSegments, data.radialSegments, data.p, data.q);
    }
  };
  var TubeGeometry = class _TubeGeometry extends BufferGeometry {
    constructor(path = new QuadraticBezierCurve3(new Vector3(-1, -1, 0), new Vector3(-1, 1, 0), new Vector3(1, 1, 0)), tubularSegments = 64, radius = 1, radialSegments = 8, closed = false) {
      super();
      this.type = "TubeGeometry";
      this.parameters = {
        path,
        tubularSegments,
        radius,
        radialSegments,
        closed
      };
      const frames = path.computeFrenetFrames(tubularSegments, closed);
      this.tangents = frames.tangents;
      this.normals = frames.normals;
      this.binormals = frames.binormals;
      const vertex2 = new Vector3();
      const normal = new Vector3();
      const uv = new Vector2();
      let P = new Vector3();
      const vertices = [];
      const normals = [];
      const uvs = [];
      const indices = [];
      generateBufferData();
      this.setIndex(indices);
      this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      this.setAttribute("normal", new Float32BufferAttribute(normals, 3));
      this.setAttribute("uv", new Float32BufferAttribute(uvs, 2));
      function generateBufferData() {
        for (let i = 0; i < tubularSegments; i++) {
          generateSegment(i);
        }
        generateSegment(closed === false ? tubularSegments : 0);
        generateUVs();
        generateIndices();
      }
      function generateSegment(i) {
        P = path.getPointAt(i / tubularSegments, P);
        const N = frames.normals[i];
        const B = frames.binormals[i];
        for (let j = 0; j <= radialSegments; j++) {
          const v = j / radialSegments * Math.PI * 2;
          const sin = Math.sin(v);
          const cos = -Math.cos(v);
          normal.x = cos * N.x + sin * B.x;
          normal.y = cos * N.y + sin * B.y;
          normal.z = cos * N.z + sin * B.z;
          normal.normalize();
          normals.push(normal.x, normal.y, normal.z);
          vertex2.x = P.x + radius * normal.x;
          vertex2.y = P.y + radius * normal.y;
          vertex2.z = P.z + radius * normal.z;
          vertices.push(vertex2.x, vertex2.y, vertex2.z);
        }
      }
      function generateIndices() {
        for (let j = 1; j <= tubularSegments; j++) {
          for (let i = 1; i <= radialSegments; i++) {
            const a = (radialSegments + 1) * (j - 1) + (i - 1);
            const b = (radialSegments + 1) * j + (i - 1);
            const c = (radialSegments + 1) * j + i;
            const d = (radialSegments + 1) * (j - 1) + i;
            indices.push(a, b, d);
            indices.push(b, c, d);
          }
        }
      }
      function generateUVs() {
        for (let i = 0; i <= tubularSegments; i++) {
          for (let j = 0; j <= radialSegments; j++) {
            uv.x = i / tubularSegments;
            uv.y = j / radialSegments;
            uvs.push(uv.x, uv.y);
          }
        }
      }
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.path = this.parameters.path.toJSON();
      return data;
    }
    static fromJSON(data) {
      return new _TubeGeometry(
        new Curves[data.path.type]().fromJSON(data.path),
        data.tubularSegments,
        data.radius,
        data.radialSegments,
        data.closed
      );
    }
  };
  var WireframeGeometry = class extends BufferGeometry {
    constructor(geometry = null) {
      super();
      this.type = "WireframeGeometry";
      this.parameters = {
        geometry
      };
      if (geometry !== null) {
        const vertices = [];
        const edges = /* @__PURE__ */ new Set();
        const start = new Vector3();
        const end = new Vector3();
        if (geometry.index !== null) {
          const position = geometry.attributes.position;
          const indices = geometry.index;
          let groups = geometry.groups;
          if (groups.length === 0) {
            groups = [{ start: 0, count: indices.count, materialIndex: 0 }];
          }
          for (let o = 0, ol = groups.length; o < ol; ++o) {
            const group = groups[o];
            const groupStart = group.start;
            const groupCount = group.count;
            for (let i = groupStart, l = groupStart + groupCount; i < l; i += 3) {
              for (let j = 0; j < 3; j++) {
                const index1 = indices.getX(i + j);
                const index2 = indices.getX(i + (j + 1) % 3);
                start.fromBufferAttribute(position, index1);
                end.fromBufferAttribute(position, index2);
                if (isUniqueEdge(start, end, edges) === true) {
                  vertices.push(start.x, start.y, start.z);
                  vertices.push(end.x, end.y, end.z);
                }
              }
            }
          }
        } else {
          const position = geometry.attributes.position;
          for (let i = 0, l = position.count / 3; i < l; i++) {
            for (let j = 0; j < 3; j++) {
              const index1 = 3 * i + j;
              const index2 = 3 * i + (j + 1) % 3;
              start.fromBufferAttribute(position, index1);
              end.fromBufferAttribute(position, index2);
              if (isUniqueEdge(start, end, edges) === true) {
                vertices.push(start.x, start.y, start.z);
                vertices.push(end.x, end.y, end.z);
              }
            }
          }
        }
        this.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      }
    }
    copy(source) {
      super.copy(source);
      this.parameters = Object.assign({}, source.parameters);
      return this;
    }
  };
  function isUniqueEdge(start, end, edges) {
    const hash1 = `${start.x},${start.y},${start.z}-${end.x},${end.y},${end.z}`;
    const hash2 = `${end.x},${end.y},${end.z}-${start.x},${start.y},${start.z}`;
    if (edges.has(hash1) === true || edges.has(hash2) === true) {
      return false;
    } else {
      edges.add(hash1);
      edges.add(hash2);
      return true;
    }
  }
  var Geometries = /* @__PURE__ */ Object.freeze({
    __proto__: null,
    BoxGeometry,
    CapsuleGeometry,
    CircleGeometry,
    ConeGeometry,
    CylinderGeometry,
    DodecahedronGeometry,
    EdgesGeometry,
    ExtrudeGeometry,
    IcosahedronGeometry,
    LatheGeometry,
    OctahedronGeometry,
    PlaneGeometry,
    PolyhedronGeometry,
    RingGeometry,
    ShapeGeometry,
    SphereGeometry,
    TetrahedronGeometry,
    TorusGeometry,
    TorusKnotGeometry,
    TubeGeometry,
    WireframeGeometry
  });
  var ShadowMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isShadowMaterial = true;
      this.type = "ShadowMaterial";
      this.color = new Color(0);
      this.transparent = true;
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.color.copy(source.color);
      this.fog = source.fog;
      return this;
    }
  };
  var RawShaderMaterial = class extends ShaderMaterial {
    constructor(parameters) {
      super(parameters);
      this.isRawShaderMaterial = true;
      this.type = "RawShaderMaterial";
    }
  };
  var MeshStandardMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isMeshStandardMaterial = true;
      this.defines = { "STANDARD": "" };
      this.type = "MeshStandardMaterial";
      this.color = new Color(16777215);
      this.roughness = 1;
      this.metalness = 0;
      this.map = null;
      this.lightMap = null;
      this.lightMapIntensity = 1;
      this.aoMap = null;
      this.aoMapIntensity = 1;
      this.emissive = new Color(0);
      this.emissiveIntensity = 1;
      this.emissiveMap = null;
      this.bumpMap = null;
      this.bumpScale = 1;
      this.normalMap = null;
      this.normalMapType = TangentSpaceNormalMap;
      this.normalScale = new Vector2(1, 1);
      this.displacementMap = null;
      this.displacementScale = 1;
      this.displacementBias = 0;
      this.roughnessMap = null;
      this.metalnessMap = null;
      this.alphaMap = null;
      this.envMap = null;
      this.envMapIntensity = 1;
      this.wireframe = false;
      this.wireframeLinewidth = 1;
      this.wireframeLinecap = "round";
      this.wireframeLinejoin = "round";
      this.flatShading = false;
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.defines = { "STANDARD": "" };
      this.color.copy(source.color);
      this.roughness = source.roughness;
      this.metalness = source.metalness;
      this.map = source.map;
      this.lightMap = source.lightMap;
      this.lightMapIntensity = source.lightMapIntensity;
      this.aoMap = source.aoMap;
      this.aoMapIntensity = source.aoMapIntensity;
      this.emissive.copy(source.emissive);
      this.emissiveMap = source.emissiveMap;
      this.emissiveIntensity = source.emissiveIntensity;
      this.bumpMap = source.bumpMap;
      this.bumpScale = source.bumpScale;
      this.normalMap = source.normalMap;
      this.normalMapType = source.normalMapType;
      this.normalScale.copy(source.normalScale);
      this.displacementMap = source.displacementMap;
      this.displacementScale = source.displacementScale;
      this.displacementBias = source.displacementBias;
      this.roughnessMap = source.roughnessMap;
      this.metalnessMap = source.metalnessMap;
      this.alphaMap = source.alphaMap;
      this.envMap = source.envMap;
      this.envMapIntensity = source.envMapIntensity;
      this.wireframe = source.wireframe;
      this.wireframeLinewidth = source.wireframeLinewidth;
      this.wireframeLinecap = source.wireframeLinecap;
      this.wireframeLinejoin = source.wireframeLinejoin;
      this.flatShading = source.flatShading;
      this.fog = source.fog;
      return this;
    }
  };
  var MeshPhysicalMaterial = class extends MeshStandardMaterial {
    constructor(parameters) {
      super();
      this.isMeshPhysicalMaterial = true;
      this.defines = {
        "STANDARD": "",
        "PHYSICAL": ""
      };
      this.type = "MeshPhysicalMaterial";
      this.anisotropyRotation = 0;
      this.anisotropyMap = null;
      this.clearcoatMap = null;
      this.clearcoatRoughness = 0;
      this.clearcoatRoughnessMap = null;
      this.clearcoatNormalScale = new Vector2(1, 1);
      this.clearcoatNormalMap = null;
      this.ior = 1.5;
      Object.defineProperty(this, "reflectivity", {
        get: function() {
          return clamp(2.5 * (this.ior - 1) / (this.ior + 1), 0, 1);
        },
        set: function(reflectivity) {
          this.ior = (1 + 0.4 * reflectivity) / (1 - 0.4 * reflectivity);
        }
      });
      this.iridescenceMap = null;
      this.iridescenceIOR = 1.3;
      this.iridescenceThicknessRange = [100, 400];
      this.iridescenceThicknessMap = null;
      this.sheenColor = new Color(0);
      this.sheenColorMap = null;
      this.sheenRoughness = 1;
      this.sheenRoughnessMap = null;
      this.transmissionMap = null;
      this.thickness = 0;
      this.thicknessMap = null;
      this.attenuationDistance = Infinity;
      this.attenuationColor = new Color(1, 1, 1);
      this.specularIntensity = 1;
      this.specularIntensityMap = null;
      this.specularColor = new Color(1, 1, 1);
      this.specularColorMap = null;
      this._anisotropy = 0;
      this._clearcoat = 0;
      this._iridescence = 0;
      this._sheen = 0;
      this._transmission = 0;
      this.setValues(parameters);
    }
    get anisotropy() {
      return this._anisotropy;
    }
    set anisotropy(value) {
      if (this._anisotropy > 0 !== value > 0) {
        this.version++;
      }
      this._anisotropy = value;
    }
    get clearcoat() {
      return this._clearcoat;
    }
    set clearcoat(value) {
      if (this._clearcoat > 0 !== value > 0) {
        this.version++;
      }
      this._clearcoat = value;
    }
    get iridescence() {
      return this._iridescence;
    }
    set iridescence(value) {
      if (this._iridescence > 0 !== value > 0) {
        this.version++;
      }
      this._iridescence = value;
    }
    get sheen() {
      return this._sheen;
    }
    set sheen(value) {
      if (this._sheen > 0 !== value > 0) {
        this.version++;
      }
      this._sheen = value;
    }
    get transmission() {
      return this._transmission;
    }
    set transmission(value) {
      if (this._transmission > 0 !== value > 0) {
        this.version++;
      }
      this._transmission = value;
    }
    copy(source) {
      super.copy(source);
      this.defines = {
        "STANDARD": "",
        "PHYSICAL": ""
      };
      this.anisotropy = source.anisotropy;
      this.anisotropyRotation = source.anisotropyRotation;
      this.anisotropyMap = source.anisotropyMap;
      this.clearcoat = source.clearcoat;
      this.clearcoatMap = source.clearcoatMap;
      this.clearcoatRoughness = source.clearcoatRoughness;
      this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
      this.clearcoatNormalMap = source.clearcoatNormalMap;
      this.clearcoatNormalScale.copy(source.clearcoatNormalScale);
      this.ior = source.ior;
      this.iridescence = source.iridescence;
      this.iridescenceMap = source.iridescenceMap;
      this.iridescenceIOR = source.iridescenceIOR;
      this.iridescenceThicknessRange = [...source.iridescenceThicknessRange];
      this.iridescenceThicknessMap = source.iridescenceThicknessMap;
      this.sheen = source.sheen;
      this.sheenColor.copy(source.sheenColor);
      this.sheenColorMap = source.sheenColorMap;
      this.sheenRoughness = source.sheenRoughness;
      this.sheenRoughnessMap = source.sheenRoughnessMap;
      this.transmission = source.transmission;
      this.transmissionMap = source.transmissionMap;
      this.thickness = source.thickness;
      this.thicknessMap = source.thicknessMap;
      this.attenuationDistance = source.attenuationDistance;
      this.attenuationColor.copy(source.attenuationColor);
      this.specularIntensity = source.specularIntensity;
      this.specularIntensityMap = source.specularIntensityMap;
      this.specularColor.copy(source.specularColor);
      this.specularColorMap = source.specularColorMap;
      return this;
    }
  };
  var MeshPhongMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isMeshPhongMaterial = true;
      this.type = "MeshPhongMaterial";
      this.color = new Color(16777215);
      this.specular = new Color(1118481);
      this.shininess = 30;
      this.map = null;
      this.lightMap = null;
      this.lightMapIntensity = 1;
      this.aoMap = null;
      this.aoMapIntensity = 1;
      this.emissive = new Color(0);
      this.emissiveIntensity = 1;
      this.emissiveMap = null;
      this.bumpMap = null;
      this.bumpScale = 1;
      this.normalMap = null;
      this.normalMapType = TangentSpaceNormalMap;
      this.normalScale = new Vector2(1, 1);
      this.displacementMap = null;
      this.displacementScale = 1;
      this.displacementBias = 0;
      this.specularMap = null;
      this.alphaMap = null;
      this.envMap = null;
      this.combine = MultiplyOperation;
      this.reflectivity = 1;
      this.refractionRatio = 0.98;
      this.wireframe = false;
      this.wireframeLinewidth = 1;
      this.wireframeLinecap = "round";
      this.wireframeLinejoin = "round";
      this.flatShading = false;
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.color.copy(source.color);
      this.specular.copy(source.specular);
      this.shininess = source.shininess;
      this.map = source.map;
      this.lightMap = source.lightMap;
      this.lightMapIntensity = source.lightMapIntensity;
      this.aoMap = source.aoMap;
      this.aoMapIntensity = source.aoMapIntensity;
      this.emissive.copy(source.emissive);
      this.emissiveMap = source.emissiveMap;
      this.emissiveIntensity = source.emissiveIntensity;
      this.bumpMap = source.bumpMap;
      this.bumpScale = source.bumpScale;
      this.normalMap = source.normalMap;
      this.normalMapType = source.normalMapType;
      this.normalScale.copy(source.normalScale);
      this.displacementMap = source.displacementMap;
      this.displacementScale = source.displacementScale;
      this.displacementBias = source.displacementBias;
      this.specularMap = source.specularMap;
      this.alphaMap = source.alphaMap;
      this.envMap = source.envMap;
      this.combine = source.combine;
      this.reflectivity = source.reflectivity;
      this.refractionRatio = source.refractionRatio;
      this.wireframe = source.wireframe;
      this.wireframeLinewidth = source.wireframeLinewidth;
      this.wireframeLinecap = source.wireframeLinecap;
      this.wireframeLinejoin = source.wireframeLinejoin;
      this.flatShading = source.flatShading;
      this.fog = source.fog;
      return this;
    }
  };
  var MeshToonMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isMeshToonMaterial = true;
      this.defines = { "TOON": "" };
      this.type = "MeshToonMaterial";
      this.color = new Color(16777215);
      this.map = null;
      this.gradientMap = null;
      this.lightMap = null;
      this.lightMapIntensity = 1;
      this.aoMap = null;
      this.aoMapIntensity = 1;
      this.emissive = new Color(0);
      this.emissiveIntensity = 1;
      this.emissiveMap = null;
      this.bumpMap = null;
      this.bumpScale = 1;
      this.normalMap = null;
      this.normalMapType = TangentSpaceNormalMap;
      this.normalScale = new Vector2(1, 1);
      this.displacementMap = null;
      this.displacementScale = 1;
      this.displacementBias = 0;
      this.alphaMap = null;
      this.wireframe = false;
      this.wireframeLinewidth = 1;
      this.wireframeLinecap = "round";
      this.wireframeLinejoin = "round";
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.color.copy(source.color);
      this.map = source.map;
      this.gradientMap = source.gradientMap;
      this.lightMap = source.lightMap;
      this.lightMapIntensity = source.lightMapIntensity;
      this.aoMap = source.aoMap;
      this.aoMapIntensity = source.aoMapIntensity;
      this.emissive.copy(source.emissive);
      this.emissiveMap = source.emissiveMap;
      this.emissiveIntensity = source.emissiveIntensity;
      this.bumpMap = source.bumpMap;
      this.bumpScale = source.bumpScale;
      this.normalMap = source.normalMap;
      this.normalMapType = source.normalMapType;
      this.normalScale.copy(source.normalScale);
      this.displacementMap = source.displacementMap;
      this.displacementScale = source.displacementScale;
      this.displacementBias = source.displacementBias;
      this.alphaMap = source.alphaMap;
      this.wireframe = source.wireframe;
      this.wireframeLinewidth = source.wireframeLinewidth;
      this.wireframeLinecap = source.wireframeLinecap;
      this.wireframeLinejoin = source.wireframeLinejoin;
      this.fog = source.fog;
      return this;
    }
  };
  var MeshNormalMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isMeshNormalMaterial = true;
      this.type = "MeshNormalMaterial";
      this.bumpMap = null;
      this.bumpScale = 1;
      this.normalMap = null;
      this.normalMapType = TangentSpaceNormalMap;
      this.normalScale = new Vector2(1, 1);
      this.displacementMap = null;
      this.displacementScale = 1;
      this.displacementBias = 0;
      this.wireframe = false;
      this.wireframeLinewidth = 1;
      this.flatShading = false;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.bumpMap = source.bumpMap;
      this.bumpScale = source.bumpScale;
      this.normalMap = source.normalMap;
      this.normalMapType = source.normalMapType;
      this.normalScale.copy(source.normalScale);
      this.displacementMap = source.displacementMap;
      this.displacementScale = source.displacementScale;
      this.displacementBias = source.displacementBias;
      this.wireframe = source.wireframe;
      this.wireframeLinewidth = source.wireframeLinewidth;
      this.flatShading = source.flatShading;
      return this;
    }
  };
  var MeshLambertMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isMeshLambertMaterial = true;
      this.type = "MeshLambertMaterial";
      this.color = new Color(16777215);
      this.map = null;
      this.lightMap = null;
      this.lightMapIntensity = 1;
      this.aoMap = null;
      this.aoMapIntensity = 1;
      this.emissive = new Color(0);
      this.emissiveIntensity = 1;
      this.emissiveMap = null;
      this.bumpMap = null;
      this.bumpScale = 1;
      this.normalMap = null;
      this.normalMapType = TangentSpaceNormalMap;
      this.normalScale = new Vector2(1, 1);
      this.displacementMap = null;
      this.displacementScale = 1;
      this.displacementBias = 0;
      this.specularMap = null;
      this.alphaMap = null;
      this.envMap = null;
      this.combine = MultiplyOperation;
      this.reflectivity = 1;
      this.refractionRatio = 0.98;
      this.wireframe = false;
      this.wireframeLinewidth = 1;
      this.wireframeLinecap = "round";
      this.wireframeLinejoin = "round";
      this.flatShading = false;
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.color.copy(source.color);
      this.map = source.map;
      this.lightMap = source.lightMap;
      this.lightMapIntensity = source.lightMapIntensity;
      this.aoMap = source.aoMap;
      this.aoMapIntensity = source.aoMapIntensity;
      this.emissive.copy(source.emissive);
      this.emissiveMap = source.emissiveMap;
      this.emissiveIntensity = source.emissiveIntensity;
      this.bumpMap = source.bumpMap;
      this.bumpScale = source.bumpScale;
      this.normalMap = source.normalMap;
      this.normalMapType = source.normalMapType;
      this.normalScale.copy(source.normalScale);
      this.displacementMap = source.displacementMap;
      this.displacementScale = source.displacementScale;
      this.displacementBias = source.displacementBias;
      this.specularMap = source.specularMap;
      this.alphaMap = source.alphaMap;
      this.envMap = source.envMap;
      this.combine = source.combine;
      this.reflectivity = source.reflectivity;
      this.refractionRatio = source.refractionRatio;
      this.wireframe = source.wireframe;
      this.wireframeLinewidth = source.wireframeLinewidth;
      this.wireframeLinecap = source.wireframeLinecap;
      this.wireframeLinejoin = source.wireframeLinejoin;
      this.flatShading = source.flatShading;
      this.fog = source.fog;
      return this;
    }
  };
  var MeshMatcapMaterial = class extends Material {
    constructor(parameters) {
      super();
      this.isMeshMatcapMaterial = true;
      this.defines = { "MATCAP": "" };
      this.type = "MeshMatcapMaterial";
      this.color = new Color(16777215);
      this.matcap = null;
      this.map = null;
      this.bumpMap = null;
      this.bumpScale = 1;
      this.normalMap = null;
      this.normalMapType = TangentSpaceNormalMap;
      this.normalScale = new Vector2(1, 1);
      this.displacementMap = null;
      this.displacementScale = 1;
      this.displacementBias = 0;
      this.alphaMap = null;
      this.flatShading = false;
      this.fog = true;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.defines = { "MATCAP": "" };
      this.color.copy(source.color);
      this.matcap = source.matcap;
      this.map = source.map;
      this.bumpMap = source.bumpMap;
      this.bumpScale = source.bumpScale;
      this.normalMap = source.normalMap;
      this.normalMapType = source.normalMapType;
      this.normalScale.copy(source.normalScale);
      this.displacementMap = source.displacementMap;
      this.displacementScale = source.displacementScale;
      this.displacementBias = source.displacementBias;
      this.alphaMap = source.alphaMap;
      this.flatShading = source.flatShading;
      this.fog = source.fog;
      return this;
    }
  };
  var LineDashedMaterial = class extends LineBasicMaterial {
    constructor(parameters) {
      super();
      this.isLineDashedMaterial = true;
      this.type = "LineDashedMaterial";
      this.scale = 1;
      this.dashSize = 3;
      this.gapSize = 1;
      this.setValues(parameters);
    }
    copy(source) {
      super.copy(source);
      this.scale = source.scale;
      this.dashSize = source.dashSize;
      this.gapSize = source.gapSize;
      return this;
    }
  };
  function convertArray(array, type, forceClone) {
    if (!array || // let 'undefined' and 'null' pass
    !forceClone && array.constructor === type) return array;
    if (typeof type.BYTES_PER_ELEMENT === "number") {
      return new type(array);
    }
    return Array.prototype.slice.call(array);
  }
  function isTypedArray(object) {
    return ArrayBuffer.isView(object) && !(object instanceof DataView);
  }
  function getKeyframeOrder(times) {
    function compareTime(i, j) {
      return times[i] - times[j];
    }
    const n = times.length;
    const result = new Array(n);
    for (let i = 0; i !== n; ++i) result[i] = i;
    result.sort(compareTime);
    return result;
  }
  function sortedArray(values, stride, order) {
    const nValues = values.length;
    const result = new values.constructor(nValues);
    for (let i = 0, dstOffset = 0; dstOffset !== nValues; ++i) {
      const srcOffset = order[i] * stride;
      for (let j = 0; j !== stride; ++j) {
        result[dstOffset++] = values[srcOffset + j];
      }
    }
    return result;
  }
  function flattenJSON(jsonKeys, times, values, valuePropertyName) {
    let i = 1, key = jsonKeys[0];
    while (key !== void 0 && key[valuePropertyName] === void 0) {
      key = jsonKeys[i++];
    }
    if (key === void 0) return;
    let value = key[valuePropertyName];
    if (value === void 0) return;
    if (Array.isArray(value)) {
      do {
        value = key[valuePropertyName];
        if (value !== void 0) {
          times.push(key.time);
          values.push.apply(values, value);
        }
        key = jsonKeys[i++];
      } while (key !== void 0);
    } else if (value.toArray !== void 0) {
      do {
        value = key[valuePropertyName];
        if (value !== void 0) {
          times.push(key.time);
          value.toArray(values, values.length);
        }
        key = jsonKeys[i++];
      } while (key !== void 0);
    } else {
      do {
        value = key[valuePropertyName];
        if (value !== void 0) {
          times.push(key.time);
          values.push(value);
        }
        key = jsonKeys[i++];
      } while (key !== void 0);
    }
  }
  function subclip(sourceClip, name, startFrame, endFrame, fps = 30) {
    const clip = sourceClip.clone();
    clip.name = name;
    const tracks = [];
    for (let i = 0; i < clip.tracks.length; ++i) {
      const track = clip.tracks[i];
      const valueSize = track.getValueSize();
      const times = [];
      const values = [];
      for (let j = 0; j < track.times.length; ++j) {
        const frame = track.times[j] * fps;
        if (frame < startFrame || frame >= endFrame) continue;
        times.push(track.times[j]);
        for (let k = 0; k < valueSize; ++k) {
          values.push(track.values[j * valueSize + k]);
        }
      }
      if (times.length === 0) continue;
      track.times = convertArray(times, track.times.constructor);
      track.values = convertArray(values, track.values.constructor);
      tracks.push(track);
    }
    clip.tracks = tracks;
    let minStartTime = Infinity;
    for (let i = 0; i < clip.tracks.length; ++i) {
      if (minStartTime > clip.tracks[i].times[0]) {
        minStartTime = clip.tracks[i].times[0];
      }
    }
    for (let i = 0; i < clip.tracks.length; ++i) {
      clip.tracks[i].shift(-1 * minStartTime);
    }
    clip.resetDuration();
    return clip;
  }
  function makeClipAdditive(targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30) {
    if (fps <= 0) fps = 30;
    const numTracks = referenceClip.tracks.length;
    const referenceTime = referenceFrame / fps;
    for (let i = 0; i < numTracks; ++i) {
      const referenceTrack = referenceClip.tracks[i];
      const referenceTrackType = referenceTrack.ValueTypeName;
      if (referenceTrackType === "bool" || referenceTrackType === "string") continue;
      const targetTrack = targetClip.tracks.find(function(track) {
        return track.name === referenceTrack.name && track.ValueTypeName === referenceTrackType;
      });
      if (targetTrack === void 0) continue;
      let referenceOffset = 0;
      const referenceValueSize = referenceTrack.getValueSize();
      if (referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline) {
        referenceOffset = referenceValueSize / 3;
      }
      let targetOffset = 0;
      const targetValueSize = targetTrack.getValueSize();
      if (targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline) {
        targetOffset = targetValueSize / 3;
      }
      const lastIndex = referenceTrack.times.length - 1;
      let referenceValue;
      if (referenceTime <= referenceTrack.times[0]) {
        const startIndex = referenceOffset;
        const endIndex = referenceValueSize - referenceOffset;
        referenceValue = referenceTrack.values.slice(startIndex, endIndex);
      } else if (referenceTime >= referenceTrack.times[lastIndex]) {
        const startIndex = lastIndex * referenceValueSize + referenceOffset;
        const endIndex = startIndex + referenceValueSize - referenceOffset;
        referenceValue = referenceTrack.values.slice(startIndex, endIndex);
      } else {
        const interpolant = referenceTrack.createInterpolant();
        const startIndex = referenceOffset;
        const endIndex = referenceValueSize - referenceOffset;
        interpolant.evaluate(referenceTime);
        referenceValue = interpolant.resultBuffer.slice(startIndex, endIndex);
      }
      if (referenceTrackType === "quaternion") {
        const referenceQuat = new Quaternion().fromArray(referenceValue).normalize().conjugate();
        referenceQuat.toArray(referenceValue);
      }
      const numTimes = targetTrack.times.length;
      for (let j = 0; j < numTimes; ++j) {
        const valueStart = j * targetValueSize + targetOffset;
        if (referenceTrackType === "quaternion") {
          Quaternion.multiplyQuaternionsFlat(
            targetTrack.values,
            valueStart,
            referenceValue,
            0,
            targetTrack.values,
            valueStart
          );
        } else {
          const valueEnd = targetValueSize - targetOffset * 2;
          for (let k = 0; k < valueEnd; ++k) {
            targetTrack.values[valueStart + k] -= referenceValue[k];
          }
        }
      }
    }
    targetClip.blendMode = AdditiveAnimationBlendMode;
    return targetClip;
  }
  var AnimationUtils = {
    convertArray,
    isTypedArray,
    getKeyframeOrder,
    sortedArray,
    flattenJSON,
    subclip,
    makeClipAdditive
  };
  var Interpolant = class {
    constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
      this.parameterPositions = parameterPositions;
      this._cachedIndex = 0;
      this.resultBuffer = resultBuffer !== void 0 ? resultBuffer : new sampleValues.constructor(sampleSize);
      this.sampleValues = sampleValues;
      this.valueSize = sampleSize;
      this.settings = null;
      this.DefaultSettings_ = {};
    }
    evaluate(t) {
      const pp = this.parameterPositions;
      let i1 = this._cachedIndex, t1 = pp[i1], t0 = pp[i1 - 1];
      validate_interval: {
        seek: {
          let right;
          linear_scan: {
            forward_scan: if (!(t < t1)) {
              for (let giveUpAt = i1 + 2; ; ) {
                if (t1 === void 0) {
                  if (t < t0) break forward_scan;
                  i1 = pp.length;
                  this._cachedIndex = i1;
                  return this.copySampleValue_(i1 - 1);
                }
                if (i1 === giveUpAt) break;
                t0 = t1;
                t1 = pp[++i1];
                if (t < t1) {
                  break seek;
                }
              }
              right = pp.length;
              break linear_scan;
            }
            if (!(t >= t0)) {
              const t1global = pp[1];
              if (t < t1global) {
                i1 = 2;
                t0 = t1global;
              }
              for (let giveUpAt = i1 - 2; ; ) {
                if (t0 === void 0) {
                  this._cachedIndex = 0;
                  return this.copySampleValue_(0);
                }
                if (i1 === giveUpAt) break;
                t1 = t0;
                t0 = pp[--i1 - 1];
                if (t >= t0) {
                  break seek;
                }
              }
              right = i1;
              i1 = 0;
              break linear_scan;
            }
            break validate_interval;
          }
          while (i1 < right) {
            const mid = i1 + right >>> 1;
            if (t < pp[mid]) {
              right = mid;
            } else {
              i1 = mid + 1;
            }
          }
          t1 = pp[i1];
          t0 = pp[i1 - 1];
          if (t0 === void 0) {
            this._cachedIndex = 0;
            return this.copySampleValue_(0);
          }
          if (t1 === void 0) {
            i1 = pp.length;
            this._cachedIndex = i1;
            return this.copySampleValue_(i1 - 1);
          }
        }
        this._cachedIndex = i1;
        this.intervalChanged_(i1, t0, t1);
      }
      return this.interpolate_(i1, t0, t, t1);
    }
    getSettings_() {
      return this.settings || this.DefaultSettings_;
    }
    copySampleValue_(index) {
      const result = this.resultBuffer, values = this.sampleValues, stride = this.valueSize, offset = index * stride;
      for (let i = 0; i !== stride; ++i) {
        result[i] = values[offset + i];
      }
      return result;
    }
    // Template methods for derived classes:
    interpolate_() {
      throw new Error("call to abstract method");
    }
    intervalChanged_() {
    }
  };
  var CubicInterpolant = class extends Interpolant {
    constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
      super(parameterPositions, sampleValues, sampleSize, resultBuffer);
      this._weightPrev = -0;
      this._offsetPrev = -0;
      this._weightNext = -0;
      this._offsetNext = -0;
      this.DefaultSettings_ = {
        endingStart: ZeroCurvatureEnding,
        endingEnd: ZeroCurvatureEnding
      };
    }
    intervalChanged_(i1, t0, t1) {
      const pp = this.parameterPositions;
      let iPrev = i1 - 2, iNext = i1 + 1, tPrev = pp[iPrev], tNext = pp[iNext];
      if (tPrev === void 0) {
        switch (this.getSettings_().endingStart) {
          case ZeroSlopeEnding:
            iPrev = i1;
            tPrev = 2 * t0 - t1;
            break;
          case WrapAroundEnding:
            iPrev = pp.length - 2;
            tPrev = t0 + pp[iPrev] - pp[iPrev + 1];
            break;
          default:
            iPrev = i1;
            tPrev = t1;
        }
      }
      if (tNext === void 0) {
        switch (this.getSettings_().endingEnd) {
          case ZeroSlopeEnding:
            iNext = i1;
            tNext = 2 * t1 - t0;
            break;
          case WrapAroundEnding:
            iNext = 1;
            tNext = t1 + pp[1] - pp[0];
            break;
          default:
            iNext = i1 - 1;
            tNext = t0;
        }
      }
      const halfDt = (t1 - t0) * 0.5, stride = this.valueSize;
      this._weightPrev = halfDt / (t0 - tPrev);
      this._weightNext = halfDt / (tNext - t1);
      this._offsetPrev = iPrev * stride;
      this._offsetNext = iNext * stride;
    }
    interpolate_(i1, t0, t, t1) {
      const result = this.resultBuffer, values = this.sampleValues, stride = this.valueSize, o1 = i1 * stride, o0 = o1 - stride, oP = this._offsetPrev, oN = this._offsetNext, wP = this._weightPrev, wN = this._weightNext, p = (t - t0) / (t1 - t0), pp = p * p, ppp = pp * p;
      const sP = -wP * ppp + 2 * wP * pp - wP * p;
      const s0 = (1 + wP) * ppp + (-1.5 - 2 * wP) * pp + (-0.5 + wP) * p + 1;
      const s1 = (-1 - wN) * ppp + (1.5 + wN) * pp + 0.5 * p;
      const sN = wN * ppp - wN * pp;
      for (let i = 0; i !== stride; ++i) {
        result[i] = sP * values[oP + i] + s0 * values[o0 + i] + s1 * values[o1 + i] + sN * values[oN + i];
      }
      return result;
    }
  };
  var LinearInterpolant = class extends Interpolant {
    constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
      super(parameterPositions, sampleValues, sampleSize, resultBuffer);
    }
    interpolate_(i1, t0, t, t1) {
      const result = this.resultBuffer, values = this.sampleValues, stride = this.valueSize, offset1 = i1 * stride, offset0 = offset1 - stride, weight1 = (t - t0) / (t1 - t0), weight0 = 1 - weight1;
      for (let i = 0; i !== stride; ++i) {
        result[i] = values[offset0 + i] * weight0 + values[offset1 + i] * weight1;
      }
      return result;
    }
  };
  var DiscreteInterpolant = class extends Interpolant {
    constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
      super(parameterPositions, sampleValues, sampleSize, resultBuffer);
    }
    interpolate_(i1) {
      return this.copySampleValue_(i1 - 1);
    }
  };
  var KeyframeTrack = class {
    constructor(name, times, values, interpolation) {
      if (name === void 0) throw new Error("THREE.KeyframeTrack: track name is undefined");
      if (times === void 0 || times.length === 0) throw new Error("THREE.KeyframeTrack: no keyframes in track named " + name);
      this.name = name;
      this.times = convertArray(times, this.TimeBufferType);
      this.values = convertArray(values, this.ValueBufferType);
      this.setInterpolation(interpolation || this.DefaultInterpolation);
    }
    // Serialization (in static context, because of constructor invocation
    // and automatic invocation of .toJSON):
    static toJSON(track) {
      const trackType = track.constructor;
      let json;
      if (trackType.toJSON !== this.toJSON) {
        json = trackType.toJSON(track);
      } else {
        json = {
          "name": track.name,
          "times": convertArray(track.times, Array),
          "values": convertArray(track.values, Array)
        };
        const interpolation = track.getInterpolation();
        if (interpolation !== track.DefaultInterpolation) {
          json.interpolation = interpolation;
        }
      }
      json.type = track.ValueTypeName;
      return json;
    }
    InterpolantFactoryMethodDiscrete(result) {
      return new DiscreteInterpolant(this.times, this.values, this.getValueSize(), result);
    }
    InterpolantFactoryMethodLinear(result) {
      return new LinearInterpolant(this.times, this.values, this.getValueSize(), result);
    }
    InterpolantFactoryMethodSmooth(result) {
      return new CubicInterpolant(this.times, this.values, this.getValueSize(), result);
    }
    setInterpolation(interpolation) {
      let factoryMethod;
      switch (interpolation) {
        case InterpolateDiscrete:
          factoryMethod = this.InterpolantFactoryMethodDiscrete;
          break;
        case InterpolateLinear:
          factoryMethod = this.InterpolantFactoryMethodLinear;
          break;
        case InterpolateSmooth:
          factoryMethod = this.InterpolantFactoryMethodSmooth;
          break;
      }
      if (factoryMethod === void 0) {
        const message = "unsupported interpolation for " + this.ValueTypeName + " keyframe track named " + this.name;
        if (this.createInterpolant === void 0) {
          if (interpolation !== this.DefaultInterpolation) {
            this.setInterpolation(this.DefaultInterpolation);
          } else {
            throw new Error(message);
          }
        }
        console.warn("THREE.KeyframeTrack:", message);
        return this;
      }
      this.createInterpolant = factoryMethod;
      return this;
    }
    getInterpolation() {
      switch (this.createInterpolant) {
        case this.InterpolantFactoryMethodDiscrete:
          return InterpolateDiscrete;
        case this.InterpolantFactoryMethodLinear:
          return InterpolateLinear;
        case this.InterpolantFactoryMethodSmooth:
          return InterpolateSmooth;
      }
    }
    getValueSize() {
      return this.values.length / this.times.length;
    }
    // move all keyframes either forwards or backwards in time
    shift(timeOffset) {
      if (timeOffset !== 0) {
        const times = this.times;
        for (let i = 0, n = times.length; i !== n; ++i) {
          times[i] += timeOffset;
        }
      }
      return this;
    }
    // scale all keyframe times by a factor (useful for frame <-> seconds conversions)
    scale(timeScale) {
      if (timeScale !== 1) {
        const times = this.times;
        for (let i = 0, n = times.length; i !== n; ++i) {
          times[i] *= timeScale;
        }
      }
      return this;
    }
    // removes keyframes before and after animation without changing any values within the range [startTime, endTime].
    // IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values
    trim(startTime, endTime) {
      const times = this.times, nKeys = times.length;
      let from = 0, to = nKeys - 1;
      while (from !== nKeys && times[from] < startTime) {
        ++from;
      }
      while (to !== -1 && times[to] > endTime) {
        --to;
      }
      ++to;
      if (from !== 0 || to !== nKeys) {
        if (from >= to) {
          to = Math.max(to, 1);
          from = to - 1;
        }
        const stride = this.getValueSize();
        this.times = times.slice(from, to);
        this.values = this.values.slice(from * stride, to * stride);
      }
      return this;
    }
    // ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable
    validate() {
      let valid = true;
      const valueSize = this.getValueSize();
      if (valueSize - Math.floor(valueSize) !== 0) {
        console.error("THREE.KeyframeTrack: Invalid value size in track.", this);
        valid = false;
      }
      const times = this.times, values = this.values, nKeys = times.length;
      if (nKeys === 0) {
        console.error("THREE.KeyframeTrack: Track is empty.", this);
        valid = false;
      }
      let prevTime = null;
      for (let i = 0; i !== nKeys; i++) {
        const currTime = times[i];
        if (typeof currTime === "number" && isNaN(currTime)) {
          console.error("THREE.KeyframeTrack: Time is not a valid number.", this, i, currTime);
          valid = false;
          break;
        }
        if (prevTime !== null && prevTime > currTime) {
          console.error("THREE.KeyframeTrack: Out of order keys.", this, i, currTime, prevTime);
          valid = false;
          break;
        }
        prevTime = currTime;
      }
      if (values !== void 0) {
        if (isTypedArray(values)) {
          for (let i = 0, n = values.length; i !== n; ++i) {
            const value = values[i];
            if (isNaN(value)) {
              console.error("THREE.KeyframeTrack: Value is not a valid number.", this, i, value);
              valid = false;
              break;
            }
          }
        }
      }
      return valid;
    }
    // removes equivalent sequential keys as common in morph target sequences
    // (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)
    optimize() {
      const times = this.times.slice(), values = this.values.slice(), stride = this.getValueSize(), smoothInterpolation = this.getInterpolation() === InterpolateSmooth, lastIndex = times.length - 1;
      let writeIndex = 1;
      for (let i = 1; i < lastIndex; ++i) {
        let keep = false;
        const time = times[i];
        const timeNext = times[i + 1];
        if (time !== timeNext && (i !== 1 || time !== times[0])) {
          if (!smoothInterpolation) {
            const offset = i * stride, offsetP = offset - stride, offsetN = offset + stride;
            for (let j = 0; j !== stride; ++j) {
              const value = values[offset + j];
              if (value !== values[offsetP + j] || value !== values[offsetN + j]) {
                keep = true;
                break;
              }
            }
          } else {
            keep = true;
          }
        }
        if (keep) {
          if (i !== writeIndex) {
            times[writeIndex] = times[i];
            const readOffset = i * stride, writeOffset = writeIndex * stride;
            for (let j = 0; j !== stride; ++j) {
              values[writeOffset + j] = values[readOffset + j];
            }
          }
          ++writeIndex;
        }
      }
      if (lastIndex > 0) {
        times[writeIndex] = times[lastIndex];
        for (let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++j) {
          values[writeOffset + j] = values[readOffset + j];
        }
        ++writeIndex;
      }
      if (writeIndex !== times.length) {
        this.times = times.slice(0, writeIndex);
        this.values = values.slice(0, writeIndex * stride);
      } else {
        this.times = times;
        this.values = values;
      }
      return this;
    }
    clone() {
      const times = this.times.slice();
      const values = this.values.slice();
      const TypedKeyframeTrack = this.constructor;
      const track = new TypedKeyframeTrack(this.name, times, values);
      track.createInterpolant = this.createInterpolant;
      return track;
    }
  };
  KeyframeTrack.prototype.TimeBufferType = Float32Array;
  KeyframeTrack.prototype.ValueBufferType = Float32Array;
  KeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
  var BooleanKeyframeTrack = class extends KeyframeTrack {
  };
  BooleanKeyframeTrack.prototype.ValueTypeName = "bool";
  BooleanKeyframeTrack.prototype.ValueBufferType = Array;
  BooleanKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
  BooleanKeyframeTrack.prototype.InterpolantFactoryMethodLinear = void 0;
  BooleanKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = void 0;
  var ColorKeyframeTrack = class extends KeyframeTrack {
  };
  ColorKeyframeTrack.prototype.ValueTypeName = "color";
  var NumberKeyframeTrack = class extends KeyframeTrack {
  };
  NumberKeyframeTrack.prototype.ValueTypeName = "number";
  var QuaternionLinearInterpolant = class extends Interpolant {
    constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
      super(parameterPositions, sampleValues, sampleSize, resultBuffer);
    }
    interpolate_(i1, t0, t, t1) {
      const result = this.resultBuffer, values = this.sampleValues, stride = this.valueSize, alpha = (t - t0) / (t1 - t0);
      let offset = i1 * stride;
      for (let end = offset + stride; offset !== end; offset += 4) {
        Quaternion.slerpFlat(result, 0, values, offset - stride, values, offset, alpha);
      }
      return result;
    }
  };
  var QuaternionKeyframeTrack = class extends KeyframeTrack {
    InterpolantFactoryMethodLinear(result) {
      return new QuaternionLinearInterpolant(this.times, this.values, this.getValueSize(), result);
    }
  };
  QuaternionKeyframeTrack.prototype.ValueTypeName = "quaternion";
  QuaternionKeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
  QuaternionKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = void 0;
  var StringKeyframeTrack = class extends KeyframeTrack {
  };
  StringKeyframeTrack.prototype.ValueTypeName = "string";
  StringKeyframeTrack.prototype.ValueBufferType = Array;
  StringKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
  StringKeyframeTrack.prototype.InterpolantFactoryMethodLinear = void 0;
  StringKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = void 0;
  var VectorKeyframeTrack = class extends KeyframeTrack {
  };
  VectorKeyframeTrack.prototype.ValueTypeName = "vector";
  var AnimationClip = class {
    constructor(name, duration = -1, tracks, blendMode = NormalAnimationBlendMode) {
      this.name = name;
      this.tracks = tracks;
      this.duration = duration;
      this.blendMode = blendMode;
      this.uuid = generateUUID();
      if (this.duration < 0) {
        this.resetDuration();
      }
    }
    static parse(json) {
      const tracks = [], jsonTracks = json.tracks, frameTime = 1 / (json.fps || 1);
      for (let i = 0, n = jsonTracks.length; i !== n; ++i) {
        tracks.push(parseKeyframeTrack(jsonTracks[i]).scale(frameTime));
      }
      const clip = new this(json.name, json.duration, tracks, json.blendMode);
      clip.uuid = json.uuid;
      return clip;
    }
    static toJSON(clip) {
      const tracks = [], clipTracks = clip.tracks;
      const json = {
        "name": clip.name,
        "duration": clip.duration,
        "tracks": tracks,
        "uuid": clip.uuid,
        "blendMode": clip.blendMode
      };
      for (let i = 0, n = clipTracks.length; i !== n; ++i) {
        tracks.push(KeyframeTrack.toJSON(clipTracks[i]));
      }
      return json;
    }
    static CreateFromMorphTargetSequence(name, morphTargetSequence, fps, noLoop) {
      const numMorphTargets = morphTargetSequence.length;
      const tracks = [];
      for (let i = 0; i < numMorphTargets; i++) {
        let times = [];
        let values = [];
        times.push(
          (i + numMorphTargets - 1) % numMorphTargets,
          i,
          (i + 1) % numMorphTargets
        );
        values.push(0, 1, 0);
        const order = getKeyframeOrder(times);
        times = sortedArray(times, 1, order);
        values = sortedArray(values, 1, order);
        if (!noLoop && times[0] === 0) {
          times.push(numMorphTargets);
          values.push(values[0]);
        }
        tracks.push(
          new NumberKeyframeTrack(
            ".morphTargetInfluences[" + morphTargetSequence[i].name + "]",
            times,
            values
          ).scale(1 / fps)
        );
      }
      return new this(name, -1, tracks);
    }
    static findByName(objectOrClipArray, name) {
      let clipArray = objectOrClipArray;
      if (!Array.isArray(objectOrClipArray)) {
        const o = objectOrClipArray;
        clipArray = o.geometry && o.geometry.animations || o.animations;
      }
      for (let i = 0; i < clipArray.length; i++) {
        if (clipArray[i].name === name) {
          return clipArray[i];
        }
      }
      return null;
    }
    static CreateClipsFromMorphTargetSequences(morphTargets, fps, noLoop) {
      const animationToMorphTargets = {};
      const pattern = /^([\w-]*?)([\d]+)$/;
      for (let i = 0, il = morphTargets.length; i < il; i++) {
        const morphTarget = morphTargets[i];
        const parts = morphTarget.name.match(pattern);
        if (parts && parts.length > 1) {
          const name = parts[1];
          let animationMorphTargets = animationToMorphTargets[name];
          if (!animationMorphTargets) {
            animationToMorphTargets[name] = animationMorphTargets = [];
          }
          animationMorphTargets.push(morphTarget);
        }
      }
      const clips = [];
      for (const name in animationToMorphTargets) {
        clips.push(this.CreateFromMorphTargetSequence(name, animationToMorphTargets[name], fps, noLoop));
      }
      return clips;
    }
    // parse the animation.hierarchy format
    static parseAnimation(animation, bones) {
      if (!animation) {
        console.error("THREE.AnimationClip: No animation in JSONLoader data.");
        return null;
      }
      const addNonemptyTrack = function(trackType, trackName, animationKeys, propertyName, destTracks) {
        if (animationKeys.length !== 0) {
          const times = [];
          const values = [];
          flattenJSON(animationKeys, times, values, propertyName);
          if (times.length !== 0) {
            destTracks.push(new trackType(trackName, times, values));
          }
        }
      };
      const tracks = [];
      const clipName = animation.name || "default";
      const fps = animation.fps || 30;
      const blendMode = animation.blendMode;
      let duration = animation.length || -1;
      const hierarchyTracks = animation.hierarchy || [];
      for (let h = 0; h < hierarchyTracks.length; h++) {
        const animationKeys = hierarchyTracks[h].keys;
        if (!animationKeys || animationKeys.length === 0) continue;
        if (animationKeys[0].morphTargets) {
          const morphTargetNames = {};
          let k;
          for (k = 0; k < animationKeys.length; k++) {
            if (animationKeys[k].morphTargets) {
              for (let m = 0; m < animationKeys[k].morphTargets.length; m++) {
                morphTargetNames[animationKeys[k].morphTargets[m]] = -1;
              }
            }
          }
          for (const morphTargetName in morphTargetNames) {
            const times = [];
            const values = [];
            for (let m = 0; m !== animationKeys[k].morphTargets.length; ++m) {
              const animationKey = animationKeys[k];
              times.push(animationKey.time);
              values.push(animationKey.morphTarget === morphTargetName ? 1 : 0);
            }
            tracks.push(new NumberKeyframeTrack(".morphTargetInfluence[" + morphTargetName + "]", times, values));
          }
          duration = morphTargetNames.length * fps;
        } else {
          const boneName = ".bones[" + bones[h].name + "]";
          addNonemptyTrack(
            VectorKeyframeTrack,
            boneName + ".position",
            animationKeys,
            "pos",
            tracks
          );
          addNonemptyTrack(
            QuaternionKeyframeTrack,
            boneName + ".quaternion",
            animationKeys,
            "rot",
            tracks
          );
          addNonemptyTrack(
            VectorKeyframeTrack,
            boneName + ".scale",
            animationKeys,
            "scl",
            tracks
          );
        }
      }
      if (tracks.length === 0) {
        return null;
      }
      const clip = new this(clipName, duration, tracks, blendMode);
      return clip;
    }
    resetDuration() {
      const tracks = this.tracks;
      let duration = 0;
      for (let i = 0, n = tracks.length; i !== n; ++i) {
        const track = this.tracks[i];
        duration = Math.max(duration, track.times[track.times.length - 1]);
      }
      this.duration = duration;
      return this;
    }
    trim() {
      for (let i = 0; i < this.tracks.length; i++) {
        this.tracks[i].trim(0, this.duration);
      }
      return this;
    }
    validate() {
      let valid = true;
      for (let i = 0; i < this.tracks.length; i++) {
        valid = valid && this.tracks[i].validate();
      }
      return valid;
    }
    optimize() {
      for (let i = 0; i < this.tracks.length; i++) {
        this.tracks[i].optimize();
      }
      return this;
    }
    clone() {
      const tracks = [];
      for (let i = 0; i < this.tracks.length; i++) {
        tracks.push(this.tracks[i].clone());
      }
      return new this.constructor(this.name, this.duration, tracks, this.blendMode);
    }
    toJSON() {
      return this.constructor.toJSON(this);
    }
  };
  function getTrackTypeForValueTypeName(typeName) {
    switch (typeName.toLowerCase()) {
      case "scalar":
      case "double":
      case "float":
      case "number":
      case "integer":
        return NumberKeyframeTrack;
      case "vector":
      case "vector2":
      case "vector3":
      case "vector4":
        return VectorKeyframeTrack;
      case "color":
        return ColorKeyframeTrack;
      case "quaternion":
        return QuaternionKeyframeTrack;
      case "bool":
      case "boolean":
        return BooleanKeyframeTrack;
      case "string":
        return StringKeyframeTrack;
    }
    throw new Error("THREE.KeyframeTrack: Unsupported typeName: " + typeName);
  }
  function parseKeyframeTrack(json) {
    if (json.type === void 0) {
      throw new Error("THREE.KeyframeTrack: track type undefined, can not parse");
    }
    const trackType = getTrackTypeForValueTypeName(json.type);
    if (json.times === void 0) {
      const times = [], values = [];
      flattenJSON(json.keys, times, values, "value");
      json.times = times;
      json.values = values;
    }
    if (trackType.parse !== void 0) {
      return trackType.parse(json);
    } else {
      return new trackType(json.name, json.times, json.values, json.interpolation);
    }
  }
  var Cache = {
    enabled: false,
    files: {},
    add: function(key, file) {
      if (this.enabled === false) return;
      this.files[key] = file;
    },
    get: function(key) {
      if (this.enabled === false) return;
      return this.files[key];
    },
    remove: function(key) {
      delete this.files[key];
    },
    clear: function() {
      this.files = {};
    }
  };
  var LoadingManager = class {
    constructor(onLoad, onProgress, onError) {
      const scope = this;
      let isLoading = false;
      let itemsLoaded = 0;
      let itemsTotal = 0;
      let urlModifier = void 0;
      const handlers = [];
      this.onStart = void 0;
      this.onLoad = onLoad;
      this.onProgress = onProgress;
      this.onError = onError;
      this.itemStart = function(url) {
        itemsTotal++;
        if (isLoading === false) {
          if (scope.onStart !== void 0) {
            scope.onStart(url, itemsLoaded, itemsTotal);
          }
        }
        isLoading = true;
      };
      this.itemEnd = function(url) {
        itemsLoaded++;
        if (scope.onProgress !== void 0) {
          scope.onProgress(url, itemsLoaded, itemsTotal);
        }
        if (itemsLoaded === itemsTotal) {
          isLoading = false;
          if (scope.onLoad !== void 0) {
            scope.onLoad();
          }
        }
      };
      this.itemError = function(url) {
        if (scope.onError !== void 0) {
          scope.onError(url);
        }
      };
      this.resolveURL = function(url) {
        if (urlModifier) {
          return urlModifier(url);
        }
        return url;
      };
      this.setURLModifier = function(transform) {
        urlModifier = transform;
        return this;
      };
      this.addHandler = function(regex, loader) {
        handlers.push(regex, loader);
        return this;
      };
      this.removeHandler = function(regex) {
        const index = handlers.indexOf(regex);
        if (index !== -1) {
          handlers.splice(index, 2);
        }
        return this;
      };
      this.getHandler = function(file) {
        for (let i = 0, l = handlers.length; i < l; i += 2) {
          const regex = handlers[i];
          const loader = handlers[i + 1];
          if (regex.global) regex.lastIndex = 0;
          if (regex.test(file)) {
            return loader;
          }
        }
        return null;
      };
    }
  };
  var DefaultLoadingManager = /* @__PURE__ */ new LoadingManager();
  var Loader = class {
    constructor(manager) {
      this.manager = manager !== void 0 ? manager : DefaultLoadingManager;
      this.crossOrigin = "anonymous";
      this.withCredentials = false;
      this.path = "";
      this.resourcePath = "";
      this.requestHeader = {};
    }
    load() {
    }
    loadAsync(url, onProgress) {
      const scope = this;
      return new Promise(function(resolve, reject) {
        scope.load(url, resolve, onProgress, reject);
      });
    }
    parse() {
    }
    setCrossOrigin(crossOrigin) {
      this.crossOrigin = crossOrigin;
      return this;
    }
    setWithCredentials(value) {
      this.withCredentials = value;
      return this;
    }
    setPath(path) {
      this.path = path;
      return this;
    }
    setResourcePath(resourcePath) {
      this.resourcePath = resourcePath;
      return this;
    }
    setRequestHeader(requestHeader) {
      this.requestHeader = requestHeader;
      return this;
    }
  };
  Loader.DEFAULT_MATERIAL_NAME = "__DEFAULT";
  var loading = {};
  var HttpError = class extends Error {
    constructor(message, response) {
      super(message);
      this.response = response;
    }
  };
  var FileLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      if (url === void 0) url = "";
      if (this.path !== void 0) url = this.path + url;
      url = this.manager.resolveURL(url);
      const cached = Cache.get(url);
      if (cached !== void 0) {
        this.manager.itemStart(url);
        setTimeout(() => {
          if (onLoad) onLoad(cached);
          this.manager.itemEnd(url);
        }, 0);
        return cached;
      }
      if (loading[url] !== void 0) {
        loading[url].push({
          onLoad,
          onProgress,
          onError
        });
        return;
      }
      loading[url] = [];
      loading[url].push({
        onLoad,
        onProgress,
        onError
      });
      const req = new Request(url, {
        headers: new Headers(this.requestHeader),
        credentials: this.withCredentials ? "include" : "same-origin"
        // An abort controller could be added within a future PR
      });
      const mimeType = this.mimeType;
      const responseType = this.responseType;
      fetch(req).then((response) => {
        if (response.status === 200 || response.status === 0) {
          if (response.status === 0) {
            console.warn("THREE.FileLoader: HTTP Status 0 received.");
          }
          if (typeof ReadableStream === "undefined" || response.body === void 0 || response.body.getReader === void 0) {
            return response;
          }
          const callbacks = loading[url];
          const reader = response.body.getReader();
          const contentLength = response.headers.get("Content-Length") || response.headers.get("X-File-Size");
          const total = contentLength ? parseInt(contentLength) : 0;
          const lengthComputable = total !== 0;
          let loaded = 0;
          const stream = new ReadableStream({
            start(controller) {
              readData();
              function readData() {
                reader.read().then(({ done, value }) => {
                  if (done) {
                    controller.close();
                  } else {
                    loaded += value.byteLength;
                    const event = new ProgressEvent("progress", { lengthComputable, loaded, total });
                    for (let i = 0, il = callbacks.length; i < il; i++) {
                      const callback = callbacks[i];
                      if (callback.onProgress) callback.onProgress(event);
                    }
                    controller.enqueue(value);
                    readData();
                  }
                });
              }
            }
          });
          return new Response(stream);
        } else {
          throw new HttpError(`fetch for "${response.url}" responded with ${response.status}: ${response.statusText}`, response);
        }
      }).then((response) => {
        switch (responseType) {
          case "arraybuffer":
            return response.arrayBuffer();
          case "blob":
            return response.blob();
          case "document":
            return response.text().then((text) => {
              const parser = new DOMParser();
              return parser.parseFromString(text, mimeType);
            });
          case "json":
            return response.json();
          default:
            if (mimeType === void 0) {
              return response.text();
            } else {
              const re = /charset="?([^;"\s]*)"?/i;
              const exec = re.exec(mimeType);
              const label = exec && exec[1] ? exec[1].toLowerCase() : void 0;
              const decoder = new TextDecoder(label);
              return response.arrayBuffer().then((ab) => decoder.decode(ab));
            }
        }
      }).then((data) => {
        Cache.add(url, data);
        const callbacks = loading[url];
        delete loading[url];
        for (let i = 0, il = callbacks.length; i < il; i++) {
          const callback = callbacks[i];
          if (callback.onLoad) callback.onLoad(data);
        }
      }).catch((err) => {
        const callbacks = loading[url];
        if (callbacks === void 0) {
          this.manager.itemError(url);
          throw err;
        }
        delete loading[url];
        for (let i = 0, il = callbacks.length; i < il; i++) {
          const callback = callbacks[i];
          if (callback.onError) callback.onError(err);
        }
        this.manager.itemError(url);
      }).finally(() => {
        this.manager.itemEnd(url);
      });
      this.manager.itemStart(url);
    }
    setResponseType(value) {
      this.responseType = value;
      return this;
    }
    setMimeType(value) {
      this.mimeType = value;
      return this;
    }
  };
  var AnimationLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      const scope = this;
      const loader = new FileLoader(this.manager);
      loader.setPath(this.path);
      loader.setRequestHeader(this.requestHeader);
      loader.setWithCredentials(this.withCredentials);
      loader.load(url, function(text) {
        try {
          onLoad(scope.parse(JSON.parse(text)));
        } catch (e) {
          if (onError) {
            onError(e);
          } else {
            console.error(e);
          }
          scope.manager.itemError(url);
        }
      }, onProgress, onError);
    }
    parse(json) {
      const animations = [];
      for (let i = 0; i < json.length; i++) {
        const clip = AnimationClip.parse(json[i]);
        animations.push(clip);
      }
      return animations;
    }
  };
  var CompressedTextureLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      const scope = this;
      const images = [];
      const texture = new CompressedTexture();
      const loader = new FileLoader(this.manager);
      loader.setPath(this.path);
      loader.setResponseType("arraybuffer");
      loader.setRequestHeader(this.requestHeader);
      loader.setWithCredentials(scope.withCredentials);
      let loaded = 0;
      function loadTexture(i) {
        loader.load(url[i], function(buffer) {
          const texDatas = scope.parse(buffer, true);
          images[i] = {
            width: texDatas.width,
            height: texDatas.height,
            format: texDatas.format,
            mipmaps: texDatas.mipmaps
          };
          loaded += 1;
          if (loaded === 6) {
            if (texDatas.mipmapCount === 1) texture.minFilter = LinearFilter;
            texture.image = images;
            texture.format = texDatas.format;
            texture.needsUpdate = true;
            if (onLoad) onLoad(texture);
          }
        }, onProgress, onError);
      }
      if (Array.isArray(url)) {
        for (let i = 0, il = url.length; i < il; ++i) {
          loadTexture(i);
        }
      } else {
        loader.load(url, function(buffer) {
          const texDatas = scope.parse(buffer, true);
          if (texDatas.isCubemap) {
            const faces = texDatas.mipmaps.length / texDatas.mipmapCount;
            for (let f = 0; f < faces; f++) {
              images[f] = { mipmaps: [] };
              for (let i = 0; i < texDatas.mipmapCount; i++) {
                images[f].mipmaps.push(texDatas.mipmaps[f * texDatas.mipmapCount + i]);
                images[f].format = texDatas.format;
                images[f].width = texDatas.width;
                images[f].height = texDatas.height;
              }
            }
            texture.image = images;
          } else {
            texture.image.width = texDatas.width;
            texture.image.height = texDatas.height;
            texture.mipmaps = texDatas.mipmaps;
          }
          if (texDatas.mipmapCount === 1) {
            texture.minFilter = LinearFilter;
          }
          texture.format = texDatas.format;
          texture.needsUpdate = true;
          if (onLoad) onLoad(texture);
        }, onProgress, onError);
      }
      return texture;
    }
  };
  var ImageLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      if (this.path !== void 0) url = this.path + url;
      url = this.manager.resolveURL(url);
      const scope = this;
      const cached = Cache.get(url);
      if (cached !== void 0) {
        scope.manager.itemStart(url);
        setTimeout(function() {
          if (onLoad) onLoad(cached);
          scope.manager.itemEnd(url);
        }, 0);
        return cached;
      }
      const image = createElementNS("img");
      function onImageLoad() {
        removeEventListeners();
        Cache.add(url, this);
        if (onLoad) onLoad(this);
        scope.manager.itemEnd(url);
      }
      function onImageError(event) {
        removeEventListeners();
        if (onError) onError(event);
        scope.manager.itemError(url);
        scope.manager.itemEnd(url);
      }
      function removeEventListeners() {
        image.removeEventListener("load", onImageLoad, false);
        image.removeEventListener("error", onImageError, false);
      }
      image.addEventListener("load", onImageLoad, false);
      image.addEventListener("error", onImageError, false);
      if (url.slice(0, 5) !== "data:") {
        if (this.crossOrigin !== void 0) image.crossOrigin = this.crossOrigin;
      }
      scope.manager.itemStart(url);
      image.src = url;
      return image;
    }
  };
  var CubeTextureLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(urls, onLoad, onProgress, onError) {
      const texture = new CubeTexture();
      texture.colorSpace = SRGBColorSpace;
      const loader = new ImageLoader(this.manager);
      loader.setCrossOrigin(this.crossOrigin);
      loader.setPath(this.path);
      let loaded = 0;
      function loadTexture(i) {
        loader.load(urls[i], function(image) {
          texture.images[i] = image;
          loaded++;
          if (loaded === 6) {
            texture.needsUpdate = true;
            if (onLoad) onLoad(texture);
          }
        }, void 0, onError);
      }
      for (let i = 0; i < urls.length; ++i) {
        loadTexture(i);
      }
      return texture;
    }
  };
  var DataTextureLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      const scope = this;
      const texture = new DataTexture();
      const loader = new FileLoader(this.manager);
      loader.setResponseType("arraybuffer");
      loader.setRequestHeader(this.requestHeader);
      loader.setPath(this.path);
      loader.setWithCredentials(scope.withCredentials);
      loader.load(url, function(buffer) {
        let texData;
        try {
          texData = scope.parse(buffer);
        } catch (error) {
          if (onError !== void 0) {
            onError(error);
          } else {
            console.error(error);
            return;
          }
        }
        if (texData.image !== void 0) {
          texture.image = texData.image;
        } else if (texData.data !== void 0) {
          texture.image.width = texData.width;
          texture.image.height = texData.height;
          texture.image.data = texData.data;
        }
        texture.wrapS = texData.wrapS !== void 0 ? texData.wrapS : ClampToEdgeWrapping;
        texture.wrapT = texData.wrapT !== void 0 ? texData.wrapT : ClampToEdgeWrapping;
        texture.magFilter = texData.magFilter !== void 0 ? texData.magFilter : LinearFilter;
        texture.minFilter = texData.minFilter !== void 0 ? texData.minFilter : LinearFilter;
        texture.anisotropy = texData.anisotropy !== void 0 ? texData.anisotropy : 1;
        if (texData.colorSpace !== void 0) {
          texture.colorSpace = texData.colorSpace;
        } else if (texData.encoding !== void 0) {
          texture.encoding = texData.encoding;
        }
        if (texData.flipY !== void 0) {
          texture.flipY = texData.flipY;
        }
        if (texData.format !== void 0) {
          texture.format = texData.format;
        }
        if (texData.type !== void 0) {
          texture.type = texData.type;
        }
        if (texData.mipmaps !== void 0) {
          texture.mipmaps = texData.mipmaps;
          texture.minFilter = LinearMipmapLinearFilter;
        }
        if (texData.mipmapCount === 1) {
          texture.minFilter = LinearFilter;
        }
        if (texData.generateMipmaps !== void 0) {
          texture.generateMipmaps = texData.generateMipmaps;
        }
        texture.needsUpdate = true;
        if (onLoad) onLoad(texture, texData);
      }, onProgress, onError);
      return texture;
    }
  };
  var TextureLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      const texture = new Texture();
      const loader = new ImageLoader(this.manager);
      loader.setCrossOrigin(this.crossOrigin);
      loader.setPath(this.path);
      loader.load(url, function(image) {
        texture.image = image;
        texture.needsUpdate = true;
        if (onLoad !== void 0) {
          onLoad(texture);
        }
      }, onProgress, onError);
      return texture;
    }
  };
  var Light = class extends Object3D {
    constructor(color, intensity = 1) {
      super();
      this.isLight = true;
      this.type = "Light";
      this.color = new Color(color);
      this.intensity = intensity;
    }
    dispose() {
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.color.copy(source.color);
      this.intensity = source.intensity;
      return this;
    }
    toJSON(meta) {
      const data = super.toJSON(meta);
      data.object.color = this.color.getHex();
      data.object.intensity = this.intensity;
      if (this.groundColor !== void 0) data.object.groundColor = this.groundColor.getHex();
      if (this.distance !== void 0) data.object.distance = this.distance;
      if (this.angle !== void 0) data.object.angle = this.angle;
      if (this.decay !== void 0) data.object.decay = this.decay;
      if (this.penumbra !== void 0) data.object.penumbra = this.penumbra;
      if (this.shadow !== void 0) data.object.shadow = this.shadow.toJSON();
      return data;
    }
  };
  var HemisphereLight = class extends Light {
    constructor(skyColor, groundColor, intensity) {
      super(skyColor, intensity);
      this.isHemisphereLight = true;
      this.type = "HemisphereLight";
      this.position.copy(Object3D.DEFAULT_UP);
      this.updateMatrix();
      this.groundColor = new Color(groundColor);
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.groundColor.copy(source.groundColor);
      return this;
    }
  };
  var _projScreenMatrix$1 = /* @__PURE__ */ new Matrix4();
  var _lightPositionWorld$1 = /* @__PURE__ */ new Vector3();
  var _lookTarget$1 = /* @__PURE__ */ new Vector3();
  var LightShadow = class {
    constructor(camera) {
      this.camera = camera;
      this.bias = 0;
      this.normalBias = 0;
      this.radius = 1;
      this.blurSamples = 8;
      this.mapSize = new Vector2(512, 512);
      this.map = null;
      this.mapPass = null;
      this.matrix = new Matrix4();
      this.autoUpdate = true;
      this.needsUpdate = false;
      this._frustum = new Frustum();
      this._frameExtents = new Vector2(1, 1);
      this._viewportCount = 1;
      this._viewports = [
        new Vector4(0, 0, 1, 1)
      ];
    }
    getViewportCount() {
      return this._viewportCount;
    }
    getFrustum() {
      return this._frustum;
    }
    updateMatrices(light) {
      const shadowCamera = this.camera;
      const shadowMatrix = this.matrix;
      _lightPositionWorld$1.setFromMatrixPosition(light.matrixWorld);
      shadowCamera.position.copy(_lightPositionWorld$1);
      _lookTarget$1.setFromMatrixPosition(light.target.matrixWorld);
      shadowCamera.lookAt(_lookTarget$1);
      shadowCamera.updateMatrixWorld();
      _projScreenMatrix$1.multiplyMatrices(shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse);
      this._frustum.setFromProjectionMatrix(_projScreenMatrix$1);
      shadowMatrix.set(
        0.5,
        0,
        0,
        0.5,
        0,
        0.5,
        0,
        0.5,
        0,
        0,
        0.5,
        0.5,
        0,
        0,
        0,
        1
      );
      shadowMatrix.multiply(_projScreenMatrix$1);
    }
    getViewport(viewportIndex) {
      return this._viewports[viewportIndex];
    }
    getFrameExtents() {
      return this._frameExtents;
    }
    dispose() {
      if (this.map) {
        this.map.dispose();
      }
      if (this.mapPass) {
        this.mapPass.dispose();
      }
    }
    copy(source) {
      this.camera = source.camera.clone();
      this.bias = source.bias;
      this.radius = source.radius;
      this.mapSize.copy(source.mapSize);
      return this;
    }
    clone() {
      return new this.constructor().copy(this);
    }
    toJSON() {
      const object = {};
      if (this.bias !== 0) object.bias = this.bias;
      if (this.normalBias !== 0) object.normalBias = this.normalBias;
      if (this.radius !== 1) object.radius = this.radius;
      if (this.mapSize.x !== 512 || this.mapSize.y !== 512) object.mapSize = this.mapSize.toArray();
      object.camera = this.camera.toJSON(false).object;
      delete object.camera.matrix;
      return object;
    }
  };
  var SpotLightShadow = class extends LightShadow {
    constructor() {
      super(new PerspectiveCamera(50, 1, 0.5, 500));
      this.isSpotLightShadow = true;
      this.focus = 1;
    }
    updateMatrices(light) {
      const camera = this.camera;
      const fov2 = RAD2DEG * 2 * light.angle * this.focus;
      const aspect2 = this.mapSize.width / this.mapSize.height;
      const far = light.distance || camera.far;
      if (fov2 !== camera.fov || aspect2 !== camera.aspect || far !== camera.far) {
        camera.fov = fov2;
        camera.aspect = aspect2;
        camera.far = far;
        camera.updateProjectionMatrix();
      }
      super.updateMatrices(light);
    }
    copy(source) {
      super.copy(source);
      this.focus = source.focus;
      return this;
    }
  };
  var SpotLight = class extends Light {
    constructor(color, intensity, distance = 0, angle = Math.PI / 3, penumbra = 0, decay = 2) {
      super(color, intensity);
      this.isSpotLight = true;
      this.type = "SpotLight";
      this.position.copy(Object3D.DEFAULT_UP);
      this.updateMatrix();
      this.target = new Object3D();
      this.distance = distance;
      this.angle = angle;
      this.penumbra = penumbra;
      this.decay = decay;
      this.map = null;
      this.shadow = new SpotLightShadow();
    }
    get power() {
      return this.intensity * Math.PI;
    }
    set power(power) {
      this.intensity = power / Math.PI;
    }
    dispose() {
      this.shadow.dispose();
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.distance = source.distance;
      this.angle = source.angle;
      this.penumbra = source.penumbra;
      this.decay = source.decay;
      this.target = source.target.clone();
      this.shadow = source.shadow.clone();
      return this;
    }
  };
  var _projScreenMatrix = /* @__PURE__ */ new Matrix4();
  var _lightPositionWorld = /* @__PURE__ */ new Vector3();
  var _lookTarget = /* @__PURE__ */ new Vector3();
  var PointLightShadow = class extends LightShadow {
    constructor() {
      super(new PerspectiveCamera(90, 1, 0.5, 500));
      this.isPointLightShadow = true;
      this._frameExtents = new Vector2(4, 2);
      this._viewportCount = 6;
      this._viewports = [
        // These viewports map a cube-map onto a 2D texture with the
        // following orientation:
        //
        //  xzXZ
        //   y Y
        //
        // X - Positive x direction
        // x - Negative x direction
        // Y - Positive y direction
        // y - Negative y direction
        // Z - Positive z direction
        // z - Negative z direction
        // positive X
        new Vector4(2, 1, 1, 1),
        // negative X
        new Vector4(0, 1, 1, 1),
        // positive Z
        new Vector4(3, 1, 1, 1),
        // negative Z
        new Vector4(1, 1, 1, 1),
        // positive Y
        new Vector4(3, 0, 1, 1),
        // negative Y
        new Vector4(1, 0, 1, 1)
      ];
      this._cubeDirections = [
        new Vector3(1, 0, 0),
        new Vector3(-1, 0, 0),
        new Vector3(0, 0, 1),
        new Vector3(0, 0, -1),
        new Vector3(0, 1, 0),
        new Vector3(0, -1, 0)
      ];
      this._cubeUps = [
        new Vector3(0, 1, 0),
        new Vector3(0, 1, 0),
        new Vector3(0, 1, 0),
        new Vector3(0, 1, 0),
        new Vector3(0, 0, 1),
        new Vector3(0, 0, -1)
      ];
    }
    updateMatrices(light, viewportIndex = 0) {
      const camera = this.camera;
      const shadowMatrix = this.matrix;
      const far = light.distance || camera.far;
      if (far !== camera.far) {
        camera.far = far;
        camera.updateProjectionMatrix();
      }
      _lightPositionWorld.setFromMatrixPosition(light.matrixWorld);
      camera.position.copy(_lightPositionWorld);
      _lookTarget.copy(camera.position);
      _lookTarget.add(this._cubeDirections[viewportIndex]);
      camera.up.copy(this._cubeUps[viewportIndex]);
      camera.lookAt(_lookTarget);
      camera.updateMatrixWorld();
      shadowMatrix.makeTranslation(-_lightPositionWorld.x, -_lightPositionWorld.y, -_lightPositionWorld.z);
      _projScreenMatrix.multiplyMatrices(camera.projectionMatrix, camera.matrixWorldInverse);
      this._frustum.setFromProjectionMatrix(_projScreenMatrix);
    }
  };
  var PointLight = class extends Light {
    constructor(color, intensity, distance = 0, decay = 2) {
      super(color, intensity);
      this.isPointLight = true;
      this.type = "PointLight";
      this.distance = distance;
      this.decay = decay;
      this.shadow = new PointLightShadow();
    }
    get power() {
      return this.intensity * 4 * Math.PI;
    }
    set power(power) {
      this.intensity = power / (4 * Math.PI);
    }
    dispose() {
      this.shadow.dispose();
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.distance = source.distance;
      this.decay = source.decay;
      this.shadow = source.shadow.clone();
      return this;
    }
  };
  var DirectionalLightShadow = class extends LightShadow {
    constructor() {
      super(new OrthographicCamera(-5, 5, 5, -5, 0.5, 500));
      this.isDirectionalLightShadow = true;
    }
  };
  var DirectionalLight = class extends Light {
    constructor(color, intensity) {
      super(color, intensity);
      this.isDirectionalLight = true;
      this.type = "DirectionalLight";
      this.position.copy(Object3D.DEFAULT_UP);
      this.updateMatrix();
      this.target = new Object3D();
      this.shadow = new DirectionalLightShadow();
    }
    dispose() {
      this.shadow.dispose();
    }
    copy(source) {
      super.copy(source);
      this.target = source.target.clone();
      this.shadow = source.shadow.clone();
      return this;
    }
  };
  var AmbientLight = class extends Light {
    constructor(color, intensity) {
      super(color, intensity);
      this.isAmbientLight = true;
      this.type = "AmbientLight";
    }
  };
  var RectAreaLight = class extends Light {
    constructor(color, intensity, width = 10, height = 10) {
      super(color, intensity);
      this.isRectAreaLight = true;
      this.type = "RectAreaLight";
      this.width = width;
      this.height = height;
    }
    get power() {
      return this.intensity * this.width * this.height * Math.PI;
    }
    set power(power) {
      this.intensity = power / (this.width * this.height * Math.PI);
    }
    copy(source) {
      super.copy(source);
      this.width = source.width;
      this.height = source.height;
      return this;
    }
    toJSON(meta) {
      const data = super.toJSON(meta);
      data.object.width = this.width;
      data.object.height = this.height;
      return data;
    }
  };
  var SphericalHarmonics3 = class {
    constructor() {
      this.isSphericalHarmonics3 = true;
      this.coefficients = [];
      for (let i = 0; i < 9; i++) {
        this.coefficients.push(new Vector3());
      }
    }
    set(coefficients) {
      for (let i = 0; i < 9; i++) {
        this.coefficients[i].copy(coefficients[i]);
      }
      return this;
    }
    zero() {
      for (let i = 0; i < 9; i++) {
        this.coefficients[i].set(0, 0, 0);
      }
      return this;
    }
    // get the radiance in the direction of the normal
    // target is a Vector3
    getAt(normal, target) {
      const x = normal.x, y = normal.y, z = normal.z;
      const coeff = this.coefficients;
      target.copy(coeff[0]).multiplyScalar(0.282095);
      target.addScaledVector(coeff[1], 0.488603 * y);
      target.addScaledVector(coeff[2], 0.488603 * z);
      target.addScaledVector(coeff[3], 0.488603 * x);
      target.addScaledVector(coeff[4], 1.092548 * (x * y));
      target.addScaledVector(coeff[5], 1.092548 * (y * z));
      target.addScaledVector(coeff[6], 0.315392 * (3 * z * z - 1));
      target.addScaledVector(coeff[7], 1.092548 * (x * z));
      target.addScaledVector(coeff[8], 0.546274 * (x * x - y * y));
      return target;
    }
    // get the irradiance (radiance convolved with cosine lobe) in the direction of the normal
    // target is a Vector3
    // https://graphics.stanford.edu/papers/envmap/envmap.pdf
    getIrradianceAt(normal, target) {
      const x = normal.x, y = normal.y, z = normal.z;
      const coeff = this.coefficients;
      target.copy(coeff[0]).multiplyScalar(0.886227);
      target.addScaledVector(coeff[1], 2 * 0.511664 * y);
      target.addScaledVector(coeff[2], 2 * 0.511664 * z);
      target.addScaledVector(coeff[3], 2 * 0.511664 * x);
      target.addScaledVector(coeff[4], 2 * 0.429043 * x * y);
      target.addScaledVector(coeff[5], 2 * 0.429043 * y * z);
      target.addScaledVector(coeff[6], 0.743125 * z * z - 0.247708);
      target.addScaledVector(coeff[7], 2 * 0.429043 * x * z);
      target.addScaledVector(coeff[8], 0.429043 * (x * x - y * y));
      return target;
    }
    add(sh) {
      for (let i = 0; i < 9; i++) {
        this.coefficients[i].add(sh.coefficients[i]);
      }
      return this;
    }
    addScaledSH(sh, s) {
      for (let i = 0; i < 9; i++) {
        this.coefficients[i].addScaledVector(sh.coefficients[i], s);
      }
      return this;
    }
    scale(s) {
      for (let i = 0; i < 9; i++) {
        this.coefficients[i].multiplyScalar(s);
      }
      return this;
    }
    lerp(sh, alpha) {
      for (let i = 0; i < 9; i++) {
        this.coefficients[i].lerp(sh.coefficients[i], alpha);
      }
      return this;
    }
    equals(sh) {
      for (let i = 0; i < 9; i++) {
        if (!this.coefficients[i].equals(sh.coefficients[i])) {
          return false;
        }
      }
      return true;
    }
    copy(sh) {
      return this.set(sh.coefficients);
    }
    clone() {
      return new this.constructor().copy(this);
    }
    fromArray(array, offset = 0) {
      const coefficients = this.coefficients;
      for (let i = 0; i < 9; i++) {
        coefficients[i].fromArray(array, offset + i * 3);
      }
      return this;
    }
    toArray(array = [], offset = 0) {
      const coefficients = this.coefficients;
      for (let i = 0; i < 9; i++) {
        coefficients[i].toArray(array, offset + i * 3);
      }
      return array;
    }
    // evaluate the basis functions
    // shBasis is an Array[ 9 ]
    static getBasisAt(normal, shBasis) {
      const x = normal.x, y = normal.y, z = normal.z;
      shBasis[0] = 0.282095;
      shBasis[1] = 0.488603 * y;
      shBasis[2] = 0.488603 * z;
      shBasis[3] = 0.488603 * x;
      shBasis[4] = 1.092548 * x * y;
      shBasis[5] = 1.092548 * y * z;
      shBasis[6] = 0.315392 * (3 * z * z - 1);
      shBasis[7] = 1.092548 * x * z;
      shBasis[8] = 0.546274 * (x * x - y * y);
    }
  };
  var LightProbe = class extends Light {
    constructor(sh = new SphericalHarmonics3(), intensity = 1) {
      super(void 0, intensity);
      this.isLightProbe = true;
      this.sh = sh;
    }
    copy(source) {
      super.copy(source);
      this.sh.copy(source.sh);
      return this;
    }
    fromJSON(json) {
      this.intensity = json.intensity;
      this.sh.fromArray(json.sh);
      return this;
    }
    toJSON(meta) {
      const data = super.toJSON(meta);
      data.object.sh = this.sh.toArray();
      return data;
    }
  };
  var MaterialLoader = class _MaterialLoader extends Loader {
    constructor(manager) {
      super(manager);
      this.textures = {};
    }
    load(url, onLoad, onProgress, onError) {
      const scope = this;
      const loader = new FileLoader(scope.manager);
      loader.setPath(scope.path);
      loader.setRequestHeader(scope.requestHeader);
      loader.setWithCredentials(scope.withCredentials);
      loader.load(url, function(text) {
        try {
          onLoad(scope.parse(JSON.parse(text)));
        } catch (e) {
          if (onError) {
            onError(e);
          } else {
            console.error(e);
          }
          scope.manager.itemError(url);
        }
      }, onProgress, onError);
    }
    parse(json) {
      const textures = this.textures;
      function getTexture(name) {
        if (textures[name] === void 0) {
          console.warn("THREE.MaterialLoader: Undefined texture", name);
        }
        return textures[name];
      }
      const material = _MaterialLoader.createMaterialFromType(json.type);
      if (json.uuid !== void 0) material.uuid = json.uuid;
      if (json.name !== void 0) material.name = json.name;
      if (json.color !== void 0 && material.color !== void 0) material.color.setHex(json.color);
      if (json.roughness !== void 0) material.roughness = json.roughness;
      if (json.metalness !== void 0) material.metalness = json.metalness;
      if (json.sheen !== void 0) material.sheen = json.sheen;
      if (json.sheenColor !== void 0) material.sheenColor = new Color().setHex(json.sheenColor);
      if (json.sheenRoughness !== void 0) material.sheenRoughness = json.sheenRoughness;
      if (json.emissive !== void 0 && material.emissive !== void 0) material.emissive.setHex(json.emissive);
      if (json.specular !== void 0 && material.specular !== void 0) material.specular.setHex(json.specular);
      if (json.specularIntensity !== void 0) material.specularIntensity = json.specularIntensity;
      if (json.specularColor !== void 0 && material.specularColor !== void 0) material.specularColor.setHex(json.specularColor);
      if (json.shininess !== void 0) material.shininess = json.shininess;
      if (json.clearcoat !== void 0) material.clearcoat = json.clearcoat;
      if (json.clearcoatRoughness !== void 0) material.clearcoatRoughness = json.clearcoatRoughness;
      if (json.iridescence !== void 0) material.iridescence = json.iridescence;
      if (json.iridescenceIOR !== void 0) material.iridescenceIOR = json.iridescenceIOR;
      if (json.iridescenceThicknessRange !== void 0) material.iridescenceThicknessRange = json.iridescenceThicknessRange;
      if (json.transmission !== void 0) material.transmission = json.transmission;
      if (json.thickness !== void 0) material.thickness = json.thickness;
      if (json.attenuationDistance !== void 0) material.attenuationDistance = json.attenuationDistance;
      if (json.attenuationColor !== void 0 && material.attenuationColor !== void 0) material.attenuationColor.setHex(json.attenuationColor);
      if (json.anisotropy !== void 0) material.anisotropy = json.anisotropy;
      if (json.anisotropyRotation !== void 0) material.anisotropyRotation = json.anisotropyRotation;
      if (json.fog !== void 0) material.fog = json.fog;
      if (json.flatShading !== void 0) material.flatShading = json.flatShading;
      if (json.blending !== void 0) material.blending = json.blending;
      if (json.combine !== void 0) material.combine = json.combine;
      if (json.side !== void 0) material.side = json.side;
      if (json.shadowSide !== void 0) material.shadowSide = json.shadowSide;
      if (json.opacity !== void 0) material.opacity = json.opacity;
      if (json.transparent !== void 0) material.transparent = json.transparent;
      if (json.alphaTest !== void 0) material.alphaTest = json.alphaTest;
      if (json.alphaHash !== void 0) material.alphaHash = json.alphaHash;
      if (json.depthFunc !== void 0) material.depthFunc = json.depthFunc;
      if (json.depthTest !== void 0) material.depthTest = json.depthTest;
      if (json.depthWrite !== void 0) material.depthWrite = json.depthWrite;
      if (json.colorWrite !== void 0) material.colorWrite = json.colorWrite;
      if (json.blendSrc !== void 0) material.blendSrc = json.blendSrc;
      if (json.blendDst !== void 0) material.blendDst = json.blendDst;
      if (json.blendEquation !== void 0) material.blendEquation = json.blendEquation;
      if (json.blendSrcAlpha !== void 0) material.blendSrcAlpha = json.blendSrcAlpha;
      if (json.blendDstAlpha !== void 0) material.blendDstAlpha = json.blendDstAlpha;
      if (json.blendEquationAlpha !== void 0) material.blendEquationAlpha = json.blendEquationAlpha;
      if (json.blendColor !== void 0 && material.blendColor !== void 0) material.blendColor.setHex(json.blendColor);
      if (json.blendAlpha !== void 0) material.blendAlpha = json.blendAlpha;
      if (json.stencilWriteMask !== void 0) material.stencilWriteMask = json.stencilWriteMask;
      if (json.stencilFunc !== void 0) material.stencilFunc = json.stencilFunc;
      if (json.stencilRef !== void 0) material.stencilRef = json.stencilRef;
      if (json.stencilFuncMask !== void 0) material.stencilFuncMask = json.stencilFuncMask;
      if (json.stencilFail !== void 0) material.stencilFail = json.stencilFail;
      if (json.stencilZFail !== void 0) material.stencilZFail = json.stencilZFail;
      if (json.stencilZPass !== void 0) material.stencilZPass = json.stencilZPass;
      if (json.stencilWrite !== void 0) material.stencilWrite = json.stencilWrite;
      if (json.wireframe !== void 0) material.wireframe = json.wireframe;
      if (json.wireframeLinewidth !== void 0) material.wireframeLinewidth = json.wireframeLinewidth;
      if (json.wireframeLinecap !== void 0) material.wireframeLinecap = json.wireframeLinecap;
      if (json.wireframeLinejoin !== void 0) material.wireframeLinejoin = json.wireframeLinejoin;
      if (json.rotation !== void 0) material.rotation = json.rotation;
      if (json.linewidth !== void 0) material.linewidth = json.linewidth;
      if (json.dashSize !== void 0) material.dashSize = json.dashSize;
      if (json.gapSize !== void 0) material.gapSize = json.gapSize;
      if (json.scale !== void 0) material.scale = json.scale;
      if (json.polygonOffset !== void 0) material.polygonOffset = json.polygonOffset;
      if (json.polygonOffsetFactor !== void 0) material.polygonOffsetFactor = json.polygonOffsetFactor;
      if (json.polygonOffsetUnits !== void 0) material.polygonOffsetUnits = json.polygonOffsetUnits;
      if (json.dithering !== void 0) material.dithering = json.dithering;
      if (json.alphaToCoverage !== void 0) material.alphaToCoverage = json.alphaToCoverage;
      if (json.premultipliedAlpha !== void 0) material.premultipliedAlpha = json.premultipliedAlpha;
      if (json.forceSinglePass !== void 0) material.forceSinglePass = json.forceSinglePass;
      if (json.visible !== void 0) material.visible = json.visible;
      if (json.toneMapped !== void 0) material.toneMapped = json.toneMapped;
      if (json.userData !== void 0) material.userData = json.userData;
      if (json.vertexColors !== void 0) {
        if (typeof json.vertexColors === "number") {
          material.vertexColors = json.vertexColors > 0 ? true : false;
        } else {
          material.vertexColors = json.vertexColors;
        }
      }
      if (json.uniforms !== void 0) {
        for (const name in json.uniforms) {
          const uniform = json.uniforms[name];
          material.uniforms[name] = {};
          switch (uniform.type) {
            case "t":
              material.uniforms[name].value = getTexture(uniform.value);
              break;
            case "c":
              material.uniforms[name].value = new Color().setHex(uniform.value);
              break;
            case "v2":
              material.uniforms[name].value = new Vector2().fromArray(uniform.value);
              break;
            case "v3":
              material.uniforms[name].value = new Vector3().fromArray(uniform.value);
              break;
            case "v4":
              material.uniforms[name].value = new Vector4().fromArray(uniform.value);
              break;
            case "m3":
              material.uniforms[name].value = new Matrix3().fromArray(uniform.value);
              break;
            case "m4":
              material.uniforms[name].value = new Matrix4().fromArray(uniform.value);
              break;
            default:
              material.uniforms[name].value = uniform.value;
          }
        }
      }
      if (json.defines !== void 0) material.defines = json.defines;
      if (json.vertexShader !== void 0) material.vertexShader = json.vertexShader;
      if (json.fragmentShader !== void 0) material.fragmentShader = json.fragmentShader;
      if (json.glslVersion !== void 0) material.glslVersion = json.glslVersion;
      if (json.extensions !== void 0) {
        for (const key in json.extensions) {
          material.extensions[key] = json.extensions[key];
        }
      }
      if (json.lights !== void 0) material.lights = json.lights;
      if (json.clipping !== void 0) material.clipping = json.clipping;
      if (json.size !== void 0) material.size = json.size;
      if (json.sizeAttenuation !== void 0) material.sizeAttenuation = json.sizeAttenuation;
      if (json.map !== void 0) material.map = getTexture(json.map);
      if (json.matcap !== void 0) material.matcap = getTexture(json.matcap);
      if (json.alphaMap !== void 0) material.alphaMap = getTexture(json.alphaMap);
      if (json.bumpMap !== void 0) material.bumpMap = getTexture(json.bumpMap);
      if (json.bumpScale !== void 0) material.bumpScale = json.bumpScale;
      if (json.normalMap !== void 0) material.normalMap = getTexture(json.normalMap);
      if (json.normalMapType !== void 0) material.normalMapType = json.normalMapType;
      if (json.normalScale !== void 0) {
        let normalScale = json.normalScale;
        if (Array.isArray(normalScale) === false) {
          normalScale = [normalScale, normalScale];
        }
        material.normalScale = new Vector2().fromArray(normalScale);
      }
      if (json.displacementMap !== void 0) material.displacementMap = getTexture(json.displacementMap);
      if (json.displacementScale !== void 0) material.displacementScale = json.displacementScale;
      if (json.displacementBias !== void 0) material.displacementBias = json.displacementBias;
      if (json.roughnessMap !== void 0) material.roughnessMap = getTexture(json.roughnessMap);
      if (json.metalnessMap !== void 0) material.metalnessMap = getTexture(json.metalnessMap);
      if (json.emissiveMap !== void 0) material.emissiveMap = getTexture(json.emissiveMap);
      if (json.emissiveIntensity !== void 0) material.emissiveIntensity = json.emissiveIntensity;
      if (json.specularMap !== void 0) material.specularMap = getTexture(json.specularMap);
      if (json.specularIntensityMap !== void 0) material.specularIntensityMap = getTexture(json.specularIntensityMap);
      if (json.specularColorMap !== void 0) material.specularColorMap = getTexture(json.specularColorMap);
      if (json.envMap !== void 0) material.envMap = getTexture(json.envMap);
      if (json.envMapIntensity !== void 0) material.envMapIntensity = json.envMapIntensity;
      if (json.reflectivity !== void 0) material.reflectivity = json.reflectivity;
      if (json.refractionRatio !== void 0) material.refractionRatio = json.refractionRatio;
      if (json.lightMap !== void 0) material.lightMap = getTexture(json.lightMap);
      if (json.lightMapIntensity !== void 0) material.lightMapIntensity = json.lightMapIntensity;
      if (json.aoMap !== void 0) material.aoMap = getTexture(json.aoMap);
      if (json.aoMapIntensity !== void 0) material.aoMapIntensity = json.aoMapIntensity;
      if (json.gradientMap !== void 0) material.gradientMap = getTexture(json.gradientMap);
      if (json.clearcoatMap !== void 0) material.clearcoatMap = getTexture(json.clearcoatMap);
      if (json.clearcoatRoughnessMap !== void 0) material.clearcoatRoughnessMap = getTexture(json.clearcoatRoughnessMap);
      if (json.clearcoatNormalMap !== void 0) material.clearcoatNormalMap = getTexture(json.clearcoatNormalMap);
      if (json.clearcoatNormalScale !== void 0) material.clearcoatNormalScale = new Vector2().fromArray(json.clearcoatNormalScale);
      if (json.iridescenceMap !== void 0) material.iridescenceMap = getTexture(json.iridescenceMap);
      if (json.iridescenceThicknessMap !== void 0) material.iridescenceThicknessMap = getTexture(json.iridescenceThicknessMap);
      if (json.transmissionMap !== void 0) material.transmissionMap = getTexture(json.transmissionMap);
      if (json.thicknessMap !== void 0) material.thicknessMap = getTexture(json.thicknessMap);
      if (json.anisotropyMap !== void 0) material.anisotropyMap = getTexture(json.anisotropyMap);
      if (json.sheenColorMap !== void 0) material.sheenColorMap = getTexture(json.sheenColorMap);
      if (json.sheenRoughnessMap !== void 0) material.sheenRoughnessMap = getTexture(json.sheenRoughnessMap);
      return material;
    }
    setTextures(value) {
      this.textures = value;
      return this;
    }
    static createMaterialFromType(type) {
      const materialLib = {
        ShadowMaterial,
        SpriteMaterial,
        RawShaderMaterial,
        ShaderMaterial,
        PointsMaterial,
        MeshPhysicalMaterial,
        MeshStandardMaterial,
        MeshPhongMaterial,
        MeshToonMaterial,
        MeshNormalMaterial,
        MeshLambertMaterial,
        MeshDepthMaterial,
        MeshDistanceMaterial,
        MeshBasicMaterial,
        MeshMatcapMaterial,
        LineDashedMaterial,
        LineBasicMaterial,
        Material
      };
      return new materialLib[type]();
    }
  };
  var LoaderUtils = class {
    static decodeText(array) {
      if (typeof TextDecoder !== "undefined") {
        return new TextDecoder().decode(array);
      }
      let s = "";
      for (let i = 0, il = array.length; i < il; i++) {
        s += String.fromCharCode(array[i]);
      }
      try {
        return decodeURIComponent(escape(s));
      } catch (e) {
        return s;
      }
    }
    static extractUrlBase(url) {
      const index = url.lastIndexOf("/");
      if (index === -1) return "./";
      return url.slice(0, index + 1);
    }
    static resolveURL(url, path) {
      if (typeof url !== "string" || url === "") return "";
      if (/^https?:\/\//i.test(path) && /^\//.test(url)) {
        path = path.replace(/(^https?:\/\/[^\/]+).*/i, "$1");
      }
      if (/^(https?:)?\/\//i.test(url)) return url;
      if (/^data:.*,.*$/i.test(url)) return url;
      if (/^blob:.*$/i.test(url)) return url;
      return path + url;
    }
  };
  var InstancedBufferGeometry = class extends BufferGeometry {
    constructor() {
      super();
      this.isInstancedBufferGeometry = true;
      this.type = "InstancedBufferGeometry";
      this.instanceCount = Infinity;
    }
    copy(source) {
      super.copy(source);
      this.instanceCount = source.instanceCount;
      return this;
    }
    toJSON() {
      const data = super.toJSON();
      data.instanceCount = this.instanceCount;
      data.isInstancedBufferGeometry = true;
      return data;
    }
  };
  var BufferGeometryLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      const scope = this;
      const loader = new FileLoader(scope.manager);
      loader.setPath(scope.path);
      loader.setRequestHeader(scope.requestHeader);
      loader.setWithCredentials(scope.withCredentials);
      loader.load(url, function(text) {
        try {
          onLoad(scope.parse(JSON.parse(text)));
        } catch (e) {
          if (onError) {
            onError(e);
          } else {
            console.error(e);
          }
          scope.manager.itemError(url);
        }
      }, onProgress, onError);
    }
    parse(json) {
      const interleavedBufferMap = {};
      const arrayBufferMap = {};
      function getInterleavedBuffer(json2, uuid) {
        if (interleavedBufferMap[uuid] !== void 0) return interleavedBufferMap[uuid];
        const interleavedBuffers = json2.interleavedBuffers;
        const interleavedBuffer = interleavedBuffers[uuid];
        const buffer = getArrayBuffer(json2, interleavedBuffer.buffer);
        const array = getTypedArray(interleavedBuffer.type, buffer);
        const ib = new InterleavedBuffer(array, interleavedBuffer.stride);
        ib.uuid = interleavedBuffer.uuid;
        interleavedBufferMap[uuid] = ib;
        return ib;
      }
      function getArrayBuffer(json2, uuid) {
        if (arrayBufferMap[uuid] !== void 0) return arrayBufferMap[uuid];
        const arrayBuffers = json2.arrayBuffers;
        const arrayBuffer = arrayBuffers[uuid];
        const ab = new Uint32Array(arrayBuffer).buffer;
        arrayBufferMap[uuid] = ab;
        return ab;
      }
      const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();
      const index = json.data.index;
      if (index !== void 0) {
        const typedArray = getTypedArray(index.type, index.array);
        geometry.setIndex(new BufferAttribute(typedArray, 1));
      }
      const attributes = json.data.attributes;
      for (const key in attributes) {
        const attribute = attributes[key];
        let bufferAttribute;
        if (attribute.isInterleavedBufferAttribute) {
          const interleavedBuffer = getInterleavedBuffer(json.data, attribute.data);
          bufferAttribute = new InterleavedBufferAttribute(interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized);
        } else {
          const typedArray = getTypedArray(attribute.type, attribute.array);
          const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
          bufferAttribute = new bufferAttributeConstr(typedArray, attribute.itemSize, attribute.normalized);
        }
        if (attribute.name !== void 0) bufferAttribute.name = attribute.name;
        if (attribute.usage !== void 0) bufferAttribute.setUsage(attribute.usage);
        geometry.setAttribute(key, bufferAttribute);
      }
      const morphAttributes = json.data.morphAttributes;
      if (morphAttributes) {
        for (const key in morphAttributes) {
          const attributeArray = morphAttributes[key];
          const array = [];
          for (let i = 0, il = attributeArray.length; i < il; i++) {
            const attribute = attributeArray[i];
            let bufferAttribute;
            if (attribute.isInterleavedBufferAttribute) {
              const interleavedBuffer = getInterleavedBuffer(json.data, attribute.data);
              bufferAttribute = new InterleavedBufferAttribute(interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized);
            } else {
              const typedArray = getTypedArray(attribute.type, attribute.array);
              bufferAttribute = new BufferAttribute(typedArray, attribute.itemSize, attribute.normalized);
            }
            if (attribute.name !== void 0) bufferAttribute.name = attribute.name;
            array.push(bufferAttribute);
          }
          geometry.morphAttributes[key] = array;
        }
      }
      const morphTargetsRelative = json.data.morphTargetsRelative;
      if (morphTargetsRelative) {
        geometry.morphTargetsRelative = true;
      }
      const groups = json.data.groups || json.data.drawcalls || json.data.offsets;
      if (groups !== void 0) {
        for (let i = 0, n = groups.length; i !== n; ++i) {
          const group = groups[i];
          geometry.addGroup(group.start, group.count, group.materialIndex);
        }
      }
      const boundingSphere = json.data.boundingSphere;
      if (boundingSphere !== void 0) {
        const center = new Vector3();
        if (boundingSphere.center !== void 0) {
          center.fromArray(boundingSphere.center);
        }
        geometry.boundingSphere = new Sphere(center, boundingSphere.radius);
      }
      if (json.name) geometry.name = json.name;
      if (json.userData) geometry.userData = json.userData;
      return geometry;
    }
  };
  var ObjectLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      const scope = this;
      const path = this.path === "" ? LoaderUtils.extractUrlBase(url) : this.path;
      this.resourcePath = this.resourcePath || path;
      const loader = new FileLoader(this.manager);
      loader.setPath(this.path);
      loader.setRequestHeader(this.requestHeader);
      loader.setWithCredentials(this.withCredentials);
      loader.load(url, function(text) {
        let json = null;
        try {
          json = JSON.parse(text);
        } catch (error) {
          if (onError !== void 0) onError(error);
          console.error("THREE:ObjectLoader: Can't parse " + url + ".", error.message);
          return;
        }
        const metadata = json.metadata;
        if (metadata === void 0 || metadata.type === void 0 || metadata.type.toLowerCase() === "geometry") {
          if (onError !== void 0) onError(new Error("THREE.ObjectLoader: Can't load " + url));
          console.error("THREE.ObjectLoader: Can't load " + url);
          return;
        }
        scope.parse(json, onLoad);
      }, onProgress, onError);
    }
    async loadAsync(url, onProgress) {
      const scope = this;
      const path = this.path === "" ? LoaderUtils.extractUrlBase(url) : this.path;
      this.resourcePath = this.resourcePath || path;
      const loader = new FileLoader(this.manager);
      loader.setPath(this.path);
      loader.setRequestHeader(this.requestHeader);
      loader.setWithCredentials(this.withCredentials);
      const text = await loader.loadAsync(url, onProgress);
      const json = JSON.parse(text);
      const metadata = json.metadata;
      if (metadata === void 0 || metadata.type === void 0 || metadata.type.toLowerCase() === "geometry") {
        throw new Error("THREE.ObjectLoader: Can't load " + url);
      }
      return await scope.parseAsync(json);
    }
    parse(json, onLoad) {
      const animations = this.parseAnimations(json.animations);
      const shapes = this.parseShapes(json.shapes);
      const geometries = this.parseGeometries(json.geometries, shapes);
      const images = this.parseImages(json.images, function() {
        if (onLoad !== void 0) onLoad(object);
      });
      const textures = this.parseTextures(json.textures, images);
      const materials = this.parseMaterials(json.materials, textures);
      const object = this.parseObject(json.object, geometries, materials, textures, animations);
      const skeletons = this.parseSkeletons(json.skeletons, object);
      this.bindSkeletons(object, skeletons);
      if (onLoad !== void 0) {
        let hasImages = false;
        for (const uuid in images) {
          if (images[uuid].data instanceof HTMLImageElement) {
            hasImages = true;
            break;
          }
        }
        if (hasImages === false) onLoad(object);
      }
      return object;
    }
    async parseAsync(json) {
      const animations = this.parseAnimations(json.animations);
      const shapes = this.parseShapes(json.shapes);
      const geometries = this.parseGeometries(json.geometries, shapes);
      const images = await this.parseImagesAsync(json.images);
      const textures = this.parseTextures(json.textures, images);
      const materials = this.parseMaterials(json.materials, textures);
      const object = this.parseObject(json.object, geometries, materials, textures, animations);
      const skeletons = this.parseSkeletons(json.skeletons, object);
      this.bindSkeletons(object, skeletons);
      return object;
    }
    parseShapes(json) {
      const shapes = {};
      if (json !== void 0) {
        for (let i = 0, l = json.length; i < l; i++) {
          const shape = new Shape().fromJSON(json[i]);
          shapes[shape.uuid] = shape;
        }
      }
      return shapes;
    }
    parseSkeletons(json, object) {
      const skeletons = {};
      const bones = {};
      object.traverse(function(child) {
        if (child.isBone) bones[child.uuid] = child;
      });
      if (json !== void 0) {
        for (let i = 0, l = json.length; i < l; i++) {
          const skeleton = new Skeleton().fromJSON(json[i], bones);
          skeletons[skeleton.uuid] = skeleton;
        }
      }
      return skeletons;
    }
    parseGeometries(json, shapes) {
      const geometries = {};
      if (json !== void 0) {
        const bufferGeometryLoader = new BufferGeometryLoader();
        for (let i = 0, l = json.length; i < l; i++) {
          let geometry;
          const data = json[i];
          switch (data.type) {
            case "BufferGeometry":
            case "InstancedBufferGeometry":
              geometry = bufferGeometryLoader.parse(data);
              break;
            default:
              if (data.type in Geometries) {
                geometry = Geometries[data.type].fromJSON(data, shapes);
              } else {
                console.warn(`THREE.ObjectLoader: Unsupported geometry type "${data.type}"`);
              }
          }
          geometry.uuid = data.uuid;
          if (data.name !== void 0) geometry.name = data.name;
          if (data.userData !== void 0) geometry.userData = data.userData;
          geometries[data.uuid] = geometry;
        }
      }
      return geometries;
    }
    parseMaterials(json, textures) {
      const cache = {};
      const materials = {};
      if (json !== void 0) {
        const loader = new MaterialLoader();
        loader.setTextures(textures);
        for (let i = 0, l = json.length; i < l; i++) {
          const data = json[i];
          if (cache[data.uuid] === void 0) {
            cache[data.uuid] = loader.parse(data);
          }
          materials[data.uuid] = cache[data.uuid];
        }
      }
      return materials;
    }
    parseAnimations(json) {
      const animations = {};
      if (json !== void 0) {
        for (let i = 0; i < json.length; i++) {
          const data = json[i];
          const clip = AnimationClip.parse(data);
          animations[clip.uuid] = clip;
        }
      }
      return animations;
    }
    parseImages(json, onLoad) {
      const scope = this;
      const images = {};
      let loader;
      function loadImage(url) {
        scope.manager.itemStart(url);
        return loader.load(url, function() {
          scope.manager.itemEnd(url);
        }, void 0, function() {
          scope.manager.itemError(url);
          scope.manager.itemEnd(url);
        });
      }
      function deserializeImage(image) {
        if (typeof image === "string") {
          const url = image;
          const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test(url) ? url : scope.resourcePath + url;
          return loadImage(path);
        } else {
          if (image.data) {
            return {
              data: getTypedArray(image.type, image.data),
              width: image.width,
              height: image.height
            };
          } else {
            return null;
          }
        }
      }
      if (json !== void 0 && json.length > 0) {
        const manager = new LoadingManager(onLoad);
        loader = new ImageLoader(manager);
        loader.setCrossOrigin(this.crossOrigin);
        for (let i = 0, il = json.length; i < il; i++) {
          const image = json[i];
          const url = image.url;
          if (Array.isArray(url)) {
            const imageArray = [];
            for (let j = 0, jl = url.length; j < jl; j++) {
              const currentUrl = url[j];
              const deserializedImage = deserializeImage(currentUrl);
              if (deserializedImage !== null) {
                if (deserializedImage instanceof HTMLImageElement) {
                  imageArray.push(deserializedImage);
                } else {
                  imageArray.push(new DataTexture(deserializedImage.data, deserializedImage.width, deserializedImage.height));
                }
              }
            }
            images[image.uuid] = new Source(imageArray);
          } else {
            const deserializedImage = deserializeImage(image.url);
            images[image.uuid] = new Source(deserializedImage);
          }
        }
      }
      return images;
    }
    async parseImagesAsync(json) {
      const scope = this;
      const images = {};
      let loader;
      async function deserializeImage(image) {
        if (typeof image === "string") {
          const url = image;
          const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test(url) ? url : scope.resourcePath + url;
          return await loader.loadAsync(path);
        } else {
          if (image.data) {
            return {
              data: getTypedArray(image.type, image.data),
              width: image.width,
              height: image.height
            };
          } else {
            return null;
          }
        }
      }
      if (json !== void 0 && json.length > 0) {
        loader = new ImageLoader(this.manager);
        loader.setCrossOrigin(this.crossOrigin);
        for (let i = 0, il = json.length; i < il; i++) {
          const image = json[i];
          const url = image.url;
          if (Array.isArray(url)) {
            const imageArray = [];
            for (let j = 0, jl = url.length; j < jl; j++) {
              const currentUrl = url[j];
              const deserializedImage = await deserializeImage(currentUrl);
              if (deserializedImage !== null) {
                if (deserializedImage instanceof HTMLImageElement) {
                  imageArray.push(deserializedImage);
                } else {
                  imageArray.push(new DataTexture(deserializedImage.data, deserializedImage.width, deserializedImage.height));
                }
              }
            }
            images[image.uuid] = new Source(imageArray);
          } else {
            const deserializedImage = await deserializeImage(image.url);
            images[image.uuid] = new Source(deserializedImage);
          }
        }
      }
      return images;
    }
    parseTextures(json, images) {
      function parseConstant(value, type) {
        if (typeof value === "number") return value;
        console.warn("THREE.ObjectLoader.parseTexture: Constant should be in numeric form.", value);
        return type[value];
      }
      const textures = {};
      if (json !== void 0) {
        for (let i = 0, l = json.length; i < l; i++) {
          const data = json[i];
          if (data.image === void 0) {
            console.warn('THREE.ObjectLoader: No "image" specified for', data.uuid);
          }
          if (images[data.image] === void 0) {
            console.warn("THREE.ObjectLoader: Undefined image", data.image);
          }
          const source = images[data.image];
          const image = source.data;
          let texture;
          if (Array.isArray(image)) {
            texture = new CubeTexture();
            if (image.length === 6) texture.needsUpdate = true;
          } else {
            if (image && image.data) {
              texture = new DataTexture();
            } else {
              texture = new Texture();
            }
            if (image) texture.needsUpdate = true;
          }
          texture.source = source;
          texture.uuid = data.uuid;
          if (data.name !== void 0) texture.name = data.name;
          if (data.mapping !== void 0) texture.mapping = parseConstant(data.mapping, TEXTURE_MAPPING);
          if (data.channel !== void 0) texture.channel = data.channel;
          if (data.offset !== void 0) texture.offset.fromArray(data.offset);
          if (data.repeat !== void 0) texture.repeat.fromArray(data.repeat);
          if (data.center !== void 0) texture.center.fromArray(data.center);
          if (data.rotation !== void 0) texture.rotation = data.rotation;
          if (data.wrap !== void 0) {
            texture.wrapS = parseConstant(data.wrap[0], TEXTURE_WRAPPING);
            texture.wrapT = parseConstant(data.wrap[1], TEXTURE_WRAPPING);
          }
          if (data.format !== void 0) texture.format = data.format;
          if (data.internalFormat !== void 0) texture.internalFormat = data.internalFormat;
          if (data.type !== void 0) texture.type = data.type;
          if (data.colorSpace !== void 0) texture.colorSpace = data.colorSpace;
          if (data.encoding !== void 0) texture.encoding = data.encoding;
          if (data.minFilter !== void 0) texture.minFilter = parseConstant(data.minFilter, TEXTURE_FILTER);
          if (data.magFilter !== void 0) texture.magFilter = parseConstant(data.magFilter, TEXTURE_FILTER);
          if (data.anisotropy !== void 0) texture.anisotropy = data.anisotropy;
          if (data.flipY !== void 0) texture.flipY = data.flipY;
          if (data.generateMipmaps !== void 0) texture.generateMipmaps = data.generateMipmaps;
          if (data.premultiplyAlpha !== void 0) texture.premultiplyAlpha = data.premultiplyAlpha;
          if (data.unpackAlignment !== void 0) texture.unpackAlignment = data.unpackAlignment;
          if (data.compareFunction !== void 0) texture.compareFunction = data.compareFunction;
          if (data.userData !== void 0) texture.userData = data.userData;
          textures[data.uuid] = texture;
        }
      }
      return textures;
    }
    parseObject(data, geometries, materials, textures, animations) {
      let object;
      function getGeometry(name) {
        if (geometries[name] === void 0) {
          console.warn("THREE.ObjectLoader: Undefined geometry", name);
        }
        return geometries[name];
      }
      function getMaterial(name) {
        if (name === void 0) return void 0;
        if (Array.isArray(name)) {
          const array = [];
          for (let i = 0, l = name.length; i < l; i++) {
            const uuid = name[i];
            if (materials[uuid] === void 0) {
              console.warn("THREE.ObjectLoader: Undefined material", uuid);
            }
            array.push(materials[uuid]);
          }
          return array;
        }
        if (materials[name] === void 0) {
          console.warn("THREE.ObjectLoader: Undefined material", name);
        }
        return materials[name];
      }
      function getTexture(uuid) {
        if (textures[uuid] === void 0) {
          console.warn("THREE.ObjectLoader: Undefined texture", uuid);
        }
        return textures[uuid];
      }
      let geometry, material;
      switch (data.type) {
        case "Scene":
          object = new Scene();
          if (data.background !== void 0) {
            if (Number.isInteger(data.background)) {
              object.background = new Color(data.background);
            } else {
              object.background = getTexture(data.background);
            }
          }
          if (data.environment !== void 0) {
            object.environment = getTexture(data.environment);
          }
          if (data.fog !== void 0) {
            if (data.fog.type === "Fog") {
              object.fog = new Fog(data.fog.color, data.fog.near, data.fog.far);
            } else if (data.fog.type === "FogExp2") {
              object.fog = new FogExp2(data.fog.color, data.fog.density);
            }
            if (data.fog.name !== "") {
              object.fog.name = data.fog.name;
            }
          }
          if (data.backgroundBlurriness !== void 0) object.backgroundBlurriness = data.backgroundBlurriness;
          if (data.backgroundIntensity !== void 0) object.backgroundIntensity = data.backgroundIntensity;
          break;
        case "PerspectiveCamera":
          object = new PerspectiveCamera(data.fov, data.aspect, data.near, data.far);
          if (data.focus !== void 0) object.focus = data.focus;
          if (data.zoom !== void 0) object.zoom = data.zoom;
          if (data.filmGauge !== void 0) object.filmGauge = data.filmGauge;
          if (data.filmOffset !== void 0) object.filmOffset = data.filmOffset;
          if (data.view !== void 0) object.view = Object.assign({}, data.view);
          break;
        case "OrthographicCamera":
          object = new OrthographicCamera(data.left, data.right, data.top, data.bottom, data.near, data.far);
          if (data.zoom !== void 0) object.zoom = data.zoom;
          if (data.view !== void 0) object.view = Object.assign({}, data.view);
          break;
        case "AmbientLight":
          object = new AmbientLight(data.color, data.intensity);
          break;
        case "DirectionalLight":
          object = new DirectionalLight(data.color, data.intensity);
          break;
        case "PointLight":
          object = new PointLight(data.color, data.intensity, data.distance, data.decay);
          break;
        case "RectAreaLight":
          object = new RectAreaLight(data.color, data.intensity, data.width, data.height);
          break;
        case "SpotLight":
          object = new SpotLight(data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay);
          break;
        case "HemisphereLight":
          object = new HemisphereLight(data.color, data.groundColor, data.intensity);
          break;
        case "LightProbe":
          object = new LightProbe().fromJSON(data);
          break;
        case "SkinnedMesh":
          geometry = getGeometry(data.geometry);
          material = getMaterial(data.material);
          object = new SkinnedMesh(geometry, material);
          if (data.bindMode !== void 0) object.bindMode = data.bindMode;
          if (data.bindMatrix !== void 0) object.bindMatrix.fromArray(data.bindMatrix);
          if (data.skeleton !== void 0) object.skeleton = data.skeleton;
          break;
        case "Mesh":
          geometry = getGeometry(data.geometry);
          material = getMaterial(data.material);
          object = new Mesh(geometry, material);
          break;
        case "InstancedMesh":
          geometry = getGeometry(data.geometry);
          material = getMaterial(data.material);
          const count = data.count;
          const instanceMatrix = data.instanceMatrix;
          const instanceColor = data.instanceColor;
          object = new InstancedMesh(geometry, material, count);
          object.instanceMatrix = new InstancedBufferAttribute(new Float32Array(instanceMatrix.array), 16);
          if (instanceColor !== void 0) object.instanceColor = new InstancedBufferAttribute(new Float32Array(instanceColor.array), instanceColor.itemSize);
          break;
        case "BatchedMesh":
          geometry = getGeometry(data.geometry);
          material = getMaterial(data.material);
          object = new BatchedMesh(data.maxGeometryCount, data.maxVertexCount, data.maxIndexCount, material);
          object.geometry = geometry;
          object.perObjectFrustumCulled = data.perObjectFrustumCulled;
          object.sortObjects = data.sortObjects;
          object._drawRanges = data.drawRanges;
          object._reservedRanges = data.reservedRanges;
          object._visibility = data.visibility;
          object._active = data.active;
          object._bounds = data.bounds.map((bound) => {
            const box = new Box3();
            box.min.fromArray(bound.boxMin);
            box.max.fromArray(bound.boxMax);
            const sphere = new Sphere();
            sphere.radius = bound.sphereRadius;
            sphere.center.fromArray(bound.sphereCenter);
            return {
              boxInitialized: bound.boxInitialized,
              box,
              sphereInitialized: bound.sphereInitialized,
              sphere
            };
          });
          object._maxGeometryCount = data.maxGeometryCount;
          object._maxVertexCount = data.maxVertexCount;
          object._maxIndexCount = data.maxIndexCount;
          object._geometryInitialized = data.geometryInitialized;
          object._geometryCount = data.geometryCount;
          object._matricesTexture = getTexture(data.matricesTexture.uuid);
          break;
        case "LOD":
          object = new LOD();
          break;
        case "Line":
          object = new Line(getGeometry(data.geometry), getMaterial(data.material));
          break;
        case "LineLoop":
          object = new LineLoop(getGeometry(data.geometry), getMaterial(data.material));
          break;
        case "LineSegments":
          object = new LineSegments(getGeometry(data.geometry), getMaterial(data.material));
          break;
        case "PointCloud":
        case "Points":
          object = new Points(getGeometry(data.geometry), getMaterial(data.material));
          break;
        case "Sprite":
          object = new Sprite(getMaterial(data.material));
          break;
        case "Group":
          object = new Group();
          break;
        case "Bone":
          object = new Bone();
          break;
        default:
          object = new Object3D();
      }
      object.uuid = data.uuid;
      if (data.name !== void 0) object.name = data.name;
      if (data.matrix !== void 0) {
        object.matrix.fromArray(data.matrix);
        if (data.matrixAutoUpdate !== void 0) object.matrixAutoUpdate = data.matrixAutoUpdate;
        if (object.matrixAutoUpdate) object.matrix.decompose(object.position, object.quaternion, object.scale);
      } else {
        if (data.position !== void 0) object.position.fromArray(data.position);
        if (data.rotation !== void 0) object.rotation.fromArray(data.rotation);
        if (data.quaternion !== void 0) object.quaternion.fromArray(data.quaternion);
        if (data.scale !== void 0) object.scale.fromArray(data.scale);
      }
      if (data.up !== void 0) object.up.fromArray(data.up);
      if (data.castShadow !== void 0) object.castShadow = data.castShadow;
      if (data.receiveShadow !== void 0) object.receiveShadow = data.receiveShadow;
      if (data.shadow) {
        if (data.shadow.bias !== void 0) object.shadow.bias = data.shadow.bias;
        if (data.shadow.normalBias !== void 0) object.shadow.normalBias = data.shadow.normalBias;
        if (data.shadow.radius !== void 0) object.shadow.radius = data.shadow.radius;
        if (data.shadow.mapSize !== void 0) object.shadow.mapSize.fromArray(data.shadow.mapSize);
        if (data.shadow.camera !== void 0) object.shadow.camera = this.parseObject(data.shadow.camera);
      }
      if (data.visible !== void 0) object.visible = data.visible;
      if (data.frustumCulled !== void 0) object.frustumCulled = data.frustumCulled;
      if (data.renderOrder !== void 0) object.renderOrder = data.renderOrder;
      if (data.userData !== void 0) object.userData = data.userData;
      if (data.layers !== void 0) object.layers.mask = data.layers;
      if (data.children !== void 0) {
        const children = data.children;
        for (let i = 0; i < children.length; i++) {
          object.add(this.parseObject(children[i], geometries, materials, textures, animations));
        }
      }
      if (data.animations !== void 0) {
        const objectAnimations = data.animations;
        for (let i = 0; i < objectAnimations.length; i++) {
          const uuid = objectAnimations[i];
          object.animations.push(animations[uuid]);
        }
      }
      if (data.type === "LOD") {
        if (data.autoUpdate !== void 0) object.autoUpdate = data.autoUpdate;
        const levels = data.levels;
        for (let l = 0; l < levels.length; l++) {
          const level = levels[l];
          const child = object.getObjectByProperty("uuid", level.object);
          if (child !== void 0) {
            object.addLevel(child, level.distance, level.hysteresis);
          }
        }
      }
      return object;
    }
    bindSkeletons(object, skeletons) {
      if (Object.keys(skeletons).length === 0) return;
      object.traverse(function(child) {
        if (child.isSkinnedMesh === true && child.skeleton !== void 0) {
          const skeleton = skeletons[child.skeleton];
          if (skeleton === void 0) {
            console.warn("THREE.ObjectLoader: No skeleton found with UUID:", child.skeleton);
          } else {
            child.bind(skeleton, child.bindMatrix);
          }
        }
      });
    }
  };
  var TEXTURE_MAPPING = {
    UVMapping,
    CubeReflectionMapping,
    CubeRefractionMapping,
    EquirectangularReflectionMapping,
    EquirectangularRefractionMapping,
    CubeUVReflectionMapping
  };
  var TEXTURE_WRAPPING = {
    RepeatWrapping,
    ClampToEdgeWrapping,
    MirroredRepeatWrapping
  };
  var TEXTURE_FILTER = {
    NearestFilter,
    NearestMipmapNearestFilter,
    NearestMipmapLinearFilter,
    LinearFilter,
    LinearMipmapNearestFilter,
    LinearMipmapLinearFilter
  };
  var ImageBitmapLoader = class extends Loader {
    constructor(manager) {
      super(manager);
      this.isImageBitmapLoader = true;
      if (typeof createImageBitmap === "undefined") {
        console.warn("THREE.ImageBitmapLoader: createImageBitmap() not supported.");
      }
      if (typeof fetch === "undefined") {
        console.warn("THREE.ImageBitmapLoader: fetch() not supported.");
      }
      this.options = { premultiplyAlpha: "none" };
    }
    setOptions(options) {
      this.options = options;
      return this;
    }
    load(url, onLoad, onProgress, onError) {
      if (url === void 0) url = "";
      if (this.path !== void 0) url = this.path + url;
      url = this.manager.resolveURL(url);
      const scope = this;
      const cached = Cache.get(url);
      if (cached !== void 0) {
        scope.manager.itemStart(url);
        if (cached.then) {
          cached.then((imageBitmap) => {
            if (onLoad) onLoad(imageBitmap);
            scope.manager.itemEnd(url);
          }).catch((e) => {
            if (onError) onError(e);
          });
          return;
        }
        setTimeout(function() {
          if (onLoad) onLoad(cached);
          scope.manager.itemEnd(url);
        }, 0);
        return cached;
      }
      const fetchOptions = {};
      fetchOptions.credentials = this.crossOrigin === "anonymous" ? "same-origin" : "include";
      fetchOptions.headers = this.requestHeader;
      const promise = fetch(url, fetchOptions).then(function(res) {
        return res.blob();
      }).then(function(blob) {
        return createImageBitmap(blob, Object.assign(scope.options, { colorSpaceConversion: "none" }));
      }).then(function(imageBitmap) {
        Cache.add(url, imageBitmap);
        if (onLoad) onLoad(imageBitmap);
        scope.manager.itemEnd(url);
        return imageBitmap;
      }).catch(function(e) {
        if (onError) onError(e);
        Cache.remove(url);
        scope.manager.itemError(url);
        scope.manager.itemEnd(url);
      });
      Cache.add(url, promise);
      scope.manager.itemStart(url);
    }
  };
  var _context;
  var AudioContext = class {
    static getContext() {
      if (_context === void 0) {
        _context = new (window.AudioContext || window.webkitAudioContext)();
      }
      return _context;
    }
    static setContext(value) {
      _context = value;
    }
  };
  var AudioLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      const scope = this;
      const loader = new FileLoader(this.manager);
      loader.setResponseType("arraybuffer");
      loader.setPath(this.path);
      loader.setRequestHeader(this.requestHeader);
      loader.setWithCredentials(this.withCredentials);
      loader.load(url, function(buffer) {
        try {
          const bufferCopy = buffer.slice(0);
          const context = AudioContext.getContext();
          context.decodeAudioData(bufferCopy, function(audioBuffer) {
            onLoad(audioBuffer);
          }).catch(handleError);
        } catch (e) {
          handleError(e);
        }
      }, onProgress, onError);
      function handleError(e) {
        if (onError) {
          onError(e);
        } else {
          console.error(e);
        }
        scope.manager.itemError(url);
      }
    }
  };
  var _eyeRight = /* @__PURE__ */ new Matrix4();
  var _eyeLeft = /* @__PURE__ */ new Matrix4();
  var _projectionMatrix = /* @__PURE__ */ new Matrix4();
  var StereoCamera = class {
    constructor() {
      this.type = "StereoCamera";
      this.aspect = 1;
      this.eyeSep = 0.064;
      this.cameraL = new PerspectiveCamera();
      this.cameraL.layers.enable(1);
      this.cameraL.matrixAutoUpdate = false;
      this.cameraR = new PerspectiveCamera();
      this.cameraR.layers.enable(2);
      this.cameraR.matrixAutoUpdate = false;
      this._cache = {
        focus: null,
        fov: null,
        aspect: null,
        near: null,
        far: null,
        zoom: null,
        eyeSep: null
      };
    }
    update(camera) {
      const cache = this._cache;
      const needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov || cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near || cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;
      if (needsUpdate) {
        cache.focus = camera.focus;
        cache.fov = camera.fov;
        cache.aspect = camera.aspect * this.aspect;
        cache.near = camera.near;
        cache.far = camera.far;
        cache.zoom = camera.zoom;
        cache.eyeSep = this.eyeSep;
        _projectionMatrix.copy(camera.projectionMatrix);
        const eyeSepHalf = cache.eyeSep / 2;
        const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
        const ymax = cache.near * Math.tan(DEG2RAD * cache.fov * 0.5) / cache.zoom;
        let xmin, xmax;
        _eyeLeft.elements[12] = -eyeSepHalf;
        _eyeRight.elements[12] = eyeSepHalf;
        xmin = -ymax * cache.aspect + eyeSepOnProjection;
        xmax = ymax * cache.aspect + eyeSepOnProjection;
        _projectionMatrix.elements[0] = 2 * cache.near / (xmax - xmin);
        _projectionMatrix.elements[8] = (xmax + xmin) / (xmax - xmin);
        this.cameraL.projectionMatrix.copy(_projectionMatrix);
        xmin = -ymax * cache.aspect - eyeSepOnProjection;
        xmax = ymax * cache.aspect - eyeSepOnProjection;
        _projectionMatrix.elements[0] = 2 * cache.near / (xmax - xmin);
        _projectionMatrix.elements[8] = (xmax + xmin) / (xmax - xmin);
        this.cameraR.projectionMatrix.copy(_projectionMatrix);
      }
      this.cameraL.matrixWorld.copy(camera.matrixWorld).multiply(_eyeLeft);
      this.cameraR.matrixWorld.copy(camera.matrixWorld).multiply(_eyeRight);
    }
  };
  var Clock = class {
    constructor(autoStart = true) {
      this.autoStart = autoStart;
      this.startTime = 0;
      this.oldTime = 0;
      this.elapsedTime = 0;
      this.running = false;
    }
    start() {
      this.startTime = now();
      this.oldTime = this.startTime;
      this.elapsedTime = 0;
      this.running = true;
    }
    stop() {
      this.getElapsedTime();
      this.running = false;
      this.autoStart = false;
    }
    getElapsedTime() {
      this.getDelta();
      return this.elapsedTime;
    }
    getDelta() {
      let diff = 0;
      if (this.autoStart && !this.running) {
        this.start();
        return 0;
      }
      if (this.running) {
        const newTime = now();
        diff = (newTime - this.oldTime) / 1e3;
        this.oldTime = newTime;
        this.elapsedTime += diff;
      }
      return diff;
    }
  };
  function now() {
    return (typeof performance === "undefined" ? Date : performance).now();
  }
  var _position$1 = /* @__PURE__ */ new Vector3();
  var _quaternion$1 = /* @__PURE__ */ new Quaternion();
  var _scale$1 = /* @__PURE__ */ new Vector3();
  var _orientation$1 = /* @__PURE__ */ new Vector3();
  var AudioListener = class extends Object3D {
    constructor() {
      super();
      this.type = "AudioListener";
      this.context = AudioContext.getContext();
      this.gain = this.context.createGain();
      this.gain.connect(this.context.destination);
      this.filter = null;
      this.timeDelta = 0;
      this._clock = new Clock();
    }
    getInput() {
      return this.gain;
    }
    removeFilter() {
      if (this.filter !== null) {
        this.gain.disconnect(this.filter);
        this.filter.disconnect(this.context.destination);
        this.gain.connect(this.context.destination);
        this.filter = null;
      }
      return this;
    }
    getFilter() {
      return this.filter;
    }
    setFilter(value) {
      if (this.filter !== null) {
        this.gain.disconnect(this.filter);
        this.filter.disconnect(this.context.destination);
      } else {
        this.gain.disconnect(this.context.destination);
      }
      this.filter = value;
      this.gain.connect(this.filter);
      this.filter.connect(this.context.destination);
      return this;
    }
    getMasterVolume() {
      return this.gain.gain.value;
    }
    setMasterVolume(value) {
      this.gain.gain.setTargetAtTime(value, this.context.currentTime, 0.01);
      return this;
    }
    updateMatrixWorld(force) {
      super.updateMatrixWorld(force);
      const listener = this.context.listener;
      const up = this.up;
      this.timeDelta = this._clock.getDelta();
      this.matrixWorld.decompose(_position$1, _quaternion$1, _scale$1);
      _orientation$1.set(0, 0, -1).applyQuaternion(_quaternion$1);
      if (listener.positionX) {
        const endTime = this.context.currentTime + this.timeDelta;
        listener.positionX.linearRampToValueAtTime(_position$1.x, endTime);
        listener.positionY.linearRampToValueAtTime(_position$1.y, endTime);
        listener.positionZ.linearRampToValueAtTime(_position$1.z, endTime);
        listener.forwardX.linearRampToValueAtTime(_orientation$1.x, endTime);
        listener.forwardY.linearRampToValueAtTime(_orientation$1.y, endTime);
        listener.forwardZ.linearRampToValueAtTime(_orientation$1.z, endTime);
        listener.upX.linearRampToValueAtTime(up.x, endTime);
        listener.upY.linearRampToValueAtTime(up.y, endTime);
        listener.upZ.linearRampToValueAtTime(up.z, endTime);
      } else {
        listener.setPosition(_position$1.x, _position$1.y, _position$1.z);
        listener.setOrientation(_orientation$1.x, _orientation$1.y, _orientation$1.z, up.x, up.y, up.z);
      }
    }
  };
  var Audio = class extends Object3D {
    constructor(listener) {
      super();
      this.type = "Audio";
      this.listener = listener;
      this.context = listener.context;
      this.gain = this.context.createGain();
      this.gain.connect(listener.getInput());
      this.autoplay = false;
      this.buffer = null;
      this.detune = 0;
      this.loop = false;
      this.loopStart = 0;
      this.loopEnd = 0;
      this.offset = 0;
      this.duration = void 0;
      this.playbackRate = 1;
      this.isPlaying = false;
      this.hasPlaybackControl = true;
      this.source = null;
      this.sourceType = "empty";
      this._startedAt = 0;
      this._progress = 0;
      this._connected = false;
      this.filters = [];
    }
    getOutput() {
      return this.gain;
    }
    setNodeSource(audioNode) {
      this.hasPlaybackControl = false;
      this.sourceType = "audioNode";
      this.source = audioNode;
      this.connect();
      return this;
    }
    setMediaElementSource(mediaElement) {
      this.hasPlaybackControl = false;
      this.sourceType = "mediaNode";
      this.source = this.context.createMediaElementSource(mediaElement);
      this.connect();
      return this;
    }
    setMediaStreamSource(mediaStream) {
      this.hasPlaybackControl = false;
      this.sourceType = "mediaStreamNode";
      this.source = this.context.createMediaStreamSource(mediaStream);
      this.connect();
      return this;
    }
    setBuffer(audioBuffer) {
      this.buffer = audioBuffer;
      this.sourceType = "buffer";
      if (this.autoplay) this.play();
      return this;
    }
    play(delay = 0) {
      if (this.isPlaying === true) {
        console.warn("THREE.Audio: Audio is already playing.");
        return;
      }
      if (this.hasPlaybackControl === false) {
        console.warn("THREE.Audio: this Audio has no playback control.");
        return;
      }
      this._startedAt = this.context.currentTime + delay;
      const source = this.context.createBufferSource();
      source.buffer = this.buffer;
      source.loop = this.loop;
      source.loopStart = this.loopStart;
      source.loopEnd = this.loopEnd;
      source.onended = this.onEnded.bind(this);
      source.start(this._startedAt, this._progress + this.offset, this.duration);
      this.isPlaying = true;
      this.source = source;
      this.setDetune(this.detune);
      this.setPlaybackRate(this.playbackRate);
      return this.connect();
    }
    pause() {
      if (this.hasPlaybackControl === false) {
        console.warn("THREE.Audio: this Audio has no playback control.");
        return;
      }
      if (this.isPlaying === true) {
        this._progress += Math.max(this.context.currentTime - this._startedAt, 0) * this.playbackRate;
        if (this.loop === true) {
          this._progress = this._progress % (this.duration || this.buffer.duration);
        }
        this.source.stop();
        this.source.onended = null;
        this.isPlaying = false;
      }
      return this;
    }
    stop() {
      if (this.hasPlaybackControl === false) {
        console.warn("THREE.Audio: this Audio has no playback control.");
        return;
      }
      this._progress = 0;
      if (this.source !== null) {
        this.source.stop();
        this.source.onended = null;
      }
      this.isPlaying = false;
      return this;
    }
    connect() {
      if (this.filters.length > 0) {
        this.source.connect(this.filters[0]);
        for (let i = 1, l = this.filters.length; i < l; i++) {
          this.filters[i - 1].connect(this.filters[i]);
        }
        this.filters[this.filters.length - 1].connect(this.getOutput());
      } else {
        this.source.connect(this.getOutput());
      }
      this._connected = true;
      return this;
    }
    disconnect() {
      if (this._connected === false) {
        return;
      }
      if (this.filters.length > 0) {
        this.source.disconnect(this.filters[0]);
        for (let i = 1, l = this.filters.length; i < l; i++) {
          this.filters[i - 1].disconnect(this.filters[i]);
        }
        this.filters[this.filters.length - 1].disconnect(this.getOutput());
      } else {
        this.source.disconnect(this.getOutput());
      }
      this._connected = false;
      return this;
    }
    getFilters() {
      return this.filters;
    }
    setFilters(value) {
      if (!value) value = [];
      if (this._connected === true) {
        this.disconnect();
        this.filters = value.slice();
        this.connect();
      } else {
        this.filters = value.slice();
      }
      return this;
    }
    setDetune(value) {
      this.detune = value;
      if (this.source.detune === void 0) return;
      if (this.isPlaying === true) {
        this.source.detune.setTargetAtTime(this.detune, this.context.currentTime, 0.01);
      }
      return this;
    }
    getDetune() {
      return this.detune;
    }
    getFilter() {
      return this.getFilters()[0];
    }
    setFilter(filter) {
      return this.setFilters(filter ? [filter] : []);
    }
    setPlaybackRate(value) {
      if (this.hasPlaybackControl === false) {
        console.warn("THREE.Audio: this Audio has no playback control.");
        return;
      }
      this.playbackRate = value;
      if (this.isPlaying === true) {
        this.source.playbackRate.setTargetAtTime(this.playbackRate, this.context.currentTime, 0.01);
      }
      return this;
    }
    getPlaybackRate() {
      return this.playbackRate;
    }
    onEnded() {
      this.isPlaying = false;
    }
    getLoop() {
      if (this.hasPlaybackControl === false) {
        console.warn("THREE.Audio: this Audio has no playback control.");
        return false;
      }
      return this.loop;
    }
    setLoop(value) {
      if (this.hasPlaybackControl === false) {
        console.warn("THREE.Audio: this Audio has no playback control.");
        return;
      }
      this.loop = value;
      if (this.isPlaying === true) {
        this.source.loop = this.loop;
      }
      return this;
    }
    setLoopStart(value) {
      this.loopStart = value;
      return this;
    }
    setLoopEnd(value) {
      this.loopEnd = value;
      return this;
    }
    getVolume() {
      return this.gain.gain.value;
    }
    setVolume(value) {
      this.gain.gain.setTargetAtTime(value, this.context.currentTime, 0.01);
      return this;
    }
  };
  var _position = /* @__PURE__ */ new Vector3();
  var _quaternion = /* @__PURE__ */ new Quaternion();
  var _scale = /* @__PURE__ */ new Vector3();
  var _orientation = /* @__PURE__ */ new Vector3();
  var PositionalAudio = class extends Audio {
    constructor(listener) {
      super(listener);
      this.panner = this.context.createPanner();
      this.panner.panningModel = "HRTF";
      this.panner.connect(this.gain);
    }
    connect() {
      super.connect();
      this.panner.connect(this.gain);
    }
    disconnect() {
      super.disconnect();
      this.panner.disconnect(this.gain);
    }
    getOutput() {
      return this.panner;
    }
    getRefDistance() {
      return this.panner.refDistance;
    }
    setRefDistance(value) {
      this.panner.refDistance = value;
      return this;
    }
    getRolloffFactor() {
      return this.panner.rolloffFactor;
    }
    setRolloffFactor(value) {
      this.panner.rolloffFactor = value;
      return this;
    }
    getDistanceModel() {
      return this.panner.distanceModel;
    }
    setDistanceModel(value) {
      this.panner.distanceModel = value;
      return this;
    }
    getMaxDistance() {
      return this.panner.maxDistance;
    }
    setMaxDistance(value) {
      this.panner.maxDistance = value;
      return this;
    }
    setDirectionalCone(coneInnerAngle, coneOuterAngle, coneOuterGain) {
      this.panner.coneInnerAngle = coneInnerAngle;
      this.panner.coneOuterAngle = coneOuterAngle;
      this.panner.coneOuterGain = coneOuterGain;
      return this;
    }
    updateMatrixWorld(force) {
      super.updateMatrixWorld(force);
      if (this.hasPlaybackControl === true && this.isPlaying === false) return;
      this.matrixWorld.decompose(_position, _quaternion, _scale);
      _orientation.set(0, 0, 1).applyQuaternion(_quaternion);
      const panner = this.panner;
      if (panner.positionX) {
        const endTime = this.context.currentTime + this.listener.timeDelta;
        panner.positionX.linearRampToValueAtTime(_position.x, endTime);
        panner.positionY.linearRampToValueAtTime(_position.y, endTime);
        panner.positionZ.linearRampToValueAtTime(_position.z, endTime);
        panner.orientationX.linearRampToValueAtTime(_orientation.x, endTime);
        panner.orientationY.linearRampToValueAtTime(_orientation.y, endTime);
        panner.orientationZ.linearRampToValueAtTime(_orientation.z, endTime);
      } else {
        panner.setPosition(_position.x, _position.y, _position.z);
        panner.setOrientation(_orientation.x, _orientation.y, _orientation.z);
      }
    }
  };
  var AudioAnalyser = class {
    constructor(audio, fftSize = 2048) {
      this.analyser = audio.context.createAnalyser();
      this.analyser.fftSize = fftSize;
      this.data = new Uint8Array(this.analyser.frequencyBinCount);
      audio.getOutput().connect(this.analyser);
    }
    getFrequencyData() {
      this.analyser.getByteFrequencyData(this.data);
      return this.data;
    }
    getAverageFrequency() {
      let value = 0;
      const data = this.getFrequencyData();
      for (let i = 0; i < data.length; i++) {
        value += data[i];
      }
      return value / data.length;
    }
  };
  var PropertyMixer = class {
    constructor(binding, typeName, valueSize) {
      this.binding = binding;
      this.valueSize = valueSize;
      let mixFunction, mixFunctionAdditive, setIdentity;
      switch (typeName) {
        case "quaternion":
          mixFunction = this._slerp;
          mixFunctionAdditive = this._slerpAdditive;
          setIdentity = this._setAdditiveIdentityQuaternion;
          this.buffer = new Float64Array(valueSize * 6);
          this._workIndex = 5;
          break;
        case "string":
        case "bool":
          mixFunction = this._select;
          mixFunctionAdditive = this._select;
          setIdentity = this._setAdditiveIdentityOther;
          this.buffer = new Array(valueSize * 5);
          break;
        default:
          mixFunction = this._lerp;
          mixFunctionAdditive = this._lerpAdditive;
          setIdentity = this._setAdditiveIdentityNumeric;
          this.buffer = new Float64Array(valueSize * 5);
      }
      this._mixBufferRegion = mixFunction;
      this._mixBufferRegionAdditive = mixFunctionAdditive;
      this._setIdentity = setIdentity;
      this._origIndex = 3;
      this._addIndex = 4;
      this.cumulativeWeight = 0;
      this.cumulativeWeightAdditive = 0;
      this.useCount = 0;
      this.referenceCount = 0;
    }
    // accumulate data in the 'incoming' region into 'accu<i>'
    accumulate(accuIndex, weight) {
      const buffer = this.buffer, stride = this.valueSize, offset = accuIndex * stride + stride;
      let currentWeight = this.cumulativeWeight;
      if (currentWeight === 0) {
        for (let i = 0; i !== stride; ++i) {
          buffer[offset + i] = buffer[i];
        }
        currentWeight = weight;
      } else {
        currentWeight += weight;
        const mix = weight / currentWeight;
        this._mixBufferRegion(buffer, offset, 0, mix, stride);
      }
      this.cumulativeWeight = currentWeight;
    }
    // accumulate data in the 'incoming' region into 'add'
    accumulateAdditive(weight) {
      const buffer = this.buffer, stride = this.valueSize, offset = stride * this._addIndex;
      if (this.cumulativeWeightAdditive === 0) {
        this._setIdentity();
      }
      this._mixBufferRegionAdditive(buffer, offset, 0, weight, stride);
      this.cumulativeWeightAdditive += weight;
    }
    // apply the state of 'accu<i>' to the binding when accus differ
    apply(accuIndex) {
      const stride = this.valueSize, buffer = this.buffer, offset = accuIndex * stride + stride, weight = this.cumulativeWeight, weightAdditive = this.cumulativeWeightAdditive, binding = this.binding;
      this.cumulativeWeight = 0;
      this.cumulativeWeightAdditive = 0;
      if (weight < 1) {
        const originalValueOffset = stride * this._origIndex;
        this._mixBufferRegion(
          buffer,
          offset,
          originalValueOffset,
          1 - weight,
          stride
        );
      }
      if (weightAdditive > 0) {
        this._mixBufferRegionAdditive(buffer, offset, this._addIndex * stride, 1, stride);
      }
      for (let i = stride, e = stride + stride; i !== e; ++i) {
        if (buffer[i] !== buffer[i + stride]) {
          binding.setValue(buffer, offset);
          break;
        }
      }
    }
    // remember the state of the bound property and copy it to both accus
    saveOriginalState() {
      const binding = this.binding;
      const buffer = this.buffer, stride = this.valueSize, originalValueOffset = stride * this._origIndex;
      binding.getValue(buffer, originalValueOffset);
      for (let i = stride, e = originalValueOffset; i !== e; ++i) {
        buffer[i] = buffer[originalValueOffset + i % stride];
      }
      this._setIdentity();
      this.cumulativeWeight = 0;
      this.cumulativeWeightAdditive = 0;
    }
    // apply the state previously taken via 'saveOriginalState' to the binding
    restoreOriginalState() {
      const originalValueOffset = this.valueSize * 3;
      this.binding.setValue(this.buffer, originalValueOffset);
    }
    _setAdditiveIdentityNumeric() {
      const startIndex = this._addIndex * this.valueSize;
      const endIndex = startIndex + this.valueSize;
      for (let i = startIndex; i < endIndex; i++) {
        this.buffer[i] = 0;
      }
    }
    _setAdditiveIdentityQuaternion() {
      this._setAdditiveIdentityNumeric();
      this.buffer[this._addIndex * this.valueSize + 3] = 1;
    }
    _setAdditiveIdentityOther() {
      const startIndex = this._origIndex * this.valueSize;
      const targetIndex = this._addIndex * this.valueSize;
      for (let i = 0; i < this.valueSize; i++) {
        this.buffer[targetIndex + i] = this.buffer[startIndex + i];
      }
    }
    // mix functions
    _select(buffer, dstOffset, srcOffset, t, stride) {
      if (t >= 0.5) {
        for (let i = 0; i !== stride; ++i) {
          buffer[dstOffset + i] = buffer[srcOffset + i];
        }
      }
    }
    _slerp(buffer, dstOffset, srcOffset, t) {
      Quaternion.slerpFlat(buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t);
    }
    _slerpAdditive(buffer, dstOffset, srcOffset, t, stride) {
      const workOffset = this._workIndex * stride;
      Quaternion.multiplyQuaternionsFlat(buffer, workOffset, buffer, dstOffset, buffer, srcOffset);
      Quaternion.slerpFlat(buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t);
    }
    _lerp(buffer, dstOffset, srcOffset, t, stride) {
      const s = 1 - t;
      for (let i = 0; i !== stride; ++i) {
        const j = dstOffset + i;
        buffer[j] = buffer[j] * s + buffer[srcOffset + i] * t;
      }
    }
    _lerpAdditive(buffer, dstOffset, srcOffset, t, stride) {
      for (let i = 0; i !== stride; ++i) {
        const j = dstOffset + i;
        buffer[j] = buffer[j] + buffer[srcOffset + i] * t;
      }
    }
  };
  var _RESERVED_CHARS_RE = "\\[\\]\\.:\\/";
  var _reservedRe = new RegExp("[" + _RESERVED_CHARS_RE + "]", "g");
  var _wordChar = "[^" + _RESERVED_CHARS_RE + "]";
  var _wordCharOrDot = "[^" + _RESERVED_CHARS_RE.replace("\\.", "") + "]";
  var _directoryRe = /* @__PURE__ */ /((?:WC+[\/:])*)/.source.replace("WC", _wordChar);
  var _nodeRe = /* @__PURE__ */ /(WCOD+)?/.source.replace("WCOD", _wordCharOrDot);
  var _objectRe = /* @__PURE__ */ /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace("WC", _wordChar);
  var _propertyRe = /* @__PURE__ */ /\.(WC+)(?:\[(.+)\])?/.source.replace("WC", _wordChar);
  var _trackRe = new RegExp(
    "^" + _directoryRe + _nodeRe + _objectRe + _propertyRe + "$"
  );
  var _supportedObjectNames = ["material", "materials", "bones", "map"];
  var Composite = class {
    constructor(targetGroup, path, optionalParsedPath) {
      const parsedPath = optionalParsedPath || PropertyBinding.parseTrackName(path);
      this._targetGroup = targetGroup;
      this._bindings = targetGroup.subscribe_(path, parsedPath);
    }
    getValue(array, offset) {
      this.bind();
      const firstValidIndex = this._targetGroup.nCachedObjects_, binding = this._bindings[firstValidIndex];
      if (binding !== void 0) binding.getValue(array, offset);
    }
    setValue(array, offset) {
      const bindings = this._bindings;
      for (let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
        bindings[i].setValue(array, offset);
      }
    }
    bind() {
      const bindings = this._bindings;
      for (let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
        bindings[i].bind();
      }
    }
    unbind() {
      const bindings = this._bindings;
      for (let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
        bindings[i].unbind();
      }
    }
  };
  var PropertyBinding = class _PropertyBinding {
    constructor(rootNode, path, parsedPath) {
      this.path = path;
      this.parsedPath = parsedPath || _PropertyBinding.parseTrackName(path);
      this.node = _PropertyBinding.findNode(rootNode, this.parsedPath.nodeName);
      this.rootNode = rootNode;
      this.getValue = this._getValue_unbound;
      this.setValue = this._setValue_unbound;
    }
    static create(root, path, parsedPath) {
      if (!(root && root.isAnimationObjectGroup)) {
        return new _PropertyBinding(root, path, parsedPath);
      } else {
        return new _PropertyBinding.Composite(root, path, parsedPath);
      }
    }
    /**
     * Replaces spaces with underscores and removes unsupported characters from
     * node names, to ensure compatibility with parseTrackName().
     *
     * @param {string} name Node name to be sanitized.
     * @return {string}
     */
    static sanitizeNodeName(name) {
      return name.replace(/\s/g, "_").replace(_reservedRe, "");
    }
    static parseTrackName(trackName) {
      const matches = _trackRe.exec(trackName);
      if (matches === null) {
        throw new Error("PropertyBinding: Cannot parse trackName: " + trackName);
      }
      const results = {
        // directoryName: matches[ 1 ], // (tschw) currently unused
        nodeName: matches[2],
        objectName: matches[3],
        objectIndex: matches[4],
        propertyName: matches[5],
        // required
        propertyIndex: matches[6]
      };
      const lastDot = results.nodeName && results.nodeName.lastIndexOf(".");
      if (lastDot !== void 0 && lastDot !== -1) {
        const objectName = results.nodeName.substring(lastDot + 1);
        if (_supportedObjectNames.indexOf(objectName) !== -1) {
          results.nodeName = results.nodeName.substring(0, lastDot);
          results.objectName = objectName;
        }
      }
      if (results.propertyName === null || results.propertyName.length === 0) {
        throw new Error("PropertyBinding: can not parse propertyName from trackName: " + trackName);
      }
      return results;
    }
    static findNode(root, nodeName) {
      if (nodeName === void 0 || nodeName === "" || nodeName === "." || nodeName === -1 || nodeName === root.name || nodeName === root.uuid) {
        return root;
      }
      if (root.skeleton) {
        const bone = root.skeleton.getBoneByName(nodeName);
        if (bone !== void 0) {
          return bone;
        }
      }
      if (root.children) {
        const searchNodeSubtree = function(children) {
          for (let i = 0; i < children.length; i++) {
            const childNode = children[i];
            if (childNode.name === nodeName || childNode.uuid === nodeName) {
              return childNode;
            }
            const result = searchNodeSubtree(childNode.children);
            if (result) return result;
          }
          return null;
        };
        const subTreeNode = searchNodeSubtree(root.children);
        if (subTreeNode) {
          return subTreeNode;
        }
      }
      return null;
    }
    // these are used to "bind" a nonexistent property
    _getValue_unavailable() {
    }
    _setValue_unavailable() {
    }
    // Getters
    _getValue_direct(buffer, offset) {
      buffer[offset] = this.targetObject[this.propertyName];
    }
    _getValue_array(buffer, offset) {
      const source = this.resolvedProperty;
      for (let i = 0, n = source.length; i !== n; ++i) {
        buffer[offset++] = source[i];
      }
    }
    _getValue_arrayElement(buffer, offset) {
      buffer[offset] = this.resolvedProperty[this.propertyIndex];
    }
    _getValue_toArray(buffer, offset) {
      this.resolvedProperty.toArray(buffer, offset);
    }
    // Direct
    _setValue_direct(buffer, offset) {
      this.targetObject[this.propertyName] = buffer[offset];
    }
    _setValue_direct_setNeedsUpdate(buffer, offset) {
      this.targetObject[this.propertyName] = buffer[offset];
      this.targetObject.needsUpdate = true;
    }
    _setValue_direct_setMatrixWorldNeedsUpdate(buffer, offset) {
      this.targetObject[this.propertyName] = buffer[offset];
      this.targetObject.matrixWorldNeedsUpdate = true;
    }
    // EntireArray
    _setValue_array(buffer, offset) {
      const dest = this.resolvedProperty;
      for (let i = 0, n = dest.length; i !== n; ++i) {
        dest[i] = buffer[offset++];
      }
    }
    _setValue_array_setNeedsUpdate(buffer, offset) {
      const dest = this.resolvedProperty;
      for (let i = 0, n = dest.length; i !== n; ++i) {
        dest[i] = buffer[offset++];
      }
      this.targetObject.needsUpdate = true;
    }
    _setValue_array_setMatrixWorldNeedsUpdate(buffer, offset) {
      const dest = this.resolvedProperty;
      for (let i = 0, n = dest.length; i !== n; ++i) {
        dest[i] = buffer[offset++];
      }
      this.targetObject.matrixWorldNeedsUpdate = true;
    }
    // ArrayElement
    _setValue_arrayElement(buffer, offset) {
      this.resolvedProperty[this.propertyIndex] = buffer[offset];
    }
    _setValue_arrayElement_setNeedsUpdate(buffer, offset) {
      this.resolvedProperty[this.propertyIndex] = buffer[offset];
      this.targetObject.needsUpdate = true;
    }
    _setValue_arrayElement_setMatrixWorldNeedsUpdate(buffer, offset) {
      this.resolvedProperty[this.propertyIndex] = buffer[offset];
      this.targetObject.matrixWorldNeedsUpdate = true;
    }
    // HasToFromArray
    _setValue_fromArray(buffer, offset) {
      this.resolvedProperty.fromArray(buffer, offset);
    }
    _setValue_fromArray_setNeedsUpdate(buffer, offset) {
      this.resolvedProperty.fromArray(buffer, offset);
      this.targetObject.needsUpdate = true;
    }
    _setValue_fromArray_setMatrixWorldNeedsUpdate(buffer, offset) {
      this.resolvedProperty.fromArray(buffer, offset);
      this.targetObject.matrixWorldNeedsUpdate = true;
    }
    _getValue_unbound(targetArray, offset) {
      this.bind();
      this.getValue(targetArray, offset);
    }
    _setValue_unbound(sourceArray, offset) {
      this.bind();
      this.setValue(sourceArray, offset);
    }
    // create getter / setter pair for a property in the scene graph
    bind() {
      let targetObject = this.node;
      const parsedPath = this.parsedPath;
      const objectName = parsedPath.objectName;
      const propertyName = parsedPath.propertyName;
      let propertyIndex = parsedPath.propertyIndex;
      if (!targetObject) {
        targetObject = _PropertyBinding.findNode(this.rootNode, parsedPath.nodeName);
        this.node = targetObject;
      }
      this.getValue = this._getValue_unavailable;
      this.setValue = this._setValue_unavailable;
      if (!targetObject) {
        console.warn("THREE.PropertyBinding: No target node found for track: " + this.path + ".");
        return;
      }
      if (objectName) {
        let objectIndex = parsedPath.objectIndex;
        switch (objectName) {
          case "materials":
            if (!targetObject.material) {
              console.error("THREE.PropertyBinding: Can not bind to material as node does not have a material.", this);
              return;
            }
            if (!targetObject.material.materials) {
              console.error("THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.", this);
              return;
            }
            targetObject = targetObject.material.materials;
            break;
          case "bones":
            if (!targetObject.skeleton) {
              console.error("THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.", this);
              return;
            }
            targetObject = targetObject.skeleton.bones;
            for (let i = 0; i < targetObject.length; i++) {
              if (targetObject[i].name === objectIndex) {
                objectIndex = i;
                break;
              }
            }
            break;
          case "map":
            if ("map" in targetObject) {
              targetObject = targetObject.map;
              break;
            }
            if (!targetObject.material) {
              console.error("THREE.PropertyBinding: Can not bind to material as node does not have a material.", this);
              return;
            }
            if (!targetObject.material.map) {
              console.error("THREE.PropertyBinding: Can not bind to material.map as node.material does not have a map.", this);
              return;
            }
            targetObject = targetObject.material.map;
            break;
          default:
            if (targetObject[objectName] === void 0) {
              console.error("THREE.PropertyBinding: Can not bind to objectName of node undefined.", this);
              return;
            }
            targetObject = targetObject[objectName];
        }
        if (objectIndex !== void 0) {
          if (targetObject[objectIndex] === void 0) {
            console.error("THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.", this, targetObject);
            return;
          }
          targetObject = targetObject[objectIndex];
        }
      }
      const nodeProperty = targetObject[propertyName];
      if (nodeProperty === void 0) {
        const nodeName = parsedPath.nodeName;
        console.error("THREE.PropertyBinding: Trying to update property for track: " + nodeName + "." + propertyName + " but it wasn't found.", targetObject);
        return;
      }
      let versioning = this.Versioning.None;
      this.targetObject = targetObject;
      if (targetObject.needsUpdate !== void 0) {
        versioning = this.Versioning.NeedsUpdate;
      } else if (targetObject.matrixWorldNeedsUpdate !== void 0) {
        versioning = this.Versioning.MatrixWorldNeedsUpdate;
      }
      let bindingType = this.BindingType.Direct;
      if (propertyIndex !== void 0) {
        if (propertyName === "morphTargetInfluences") {
          if (!targetObject.geometry) {
            console.error("THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.", this);
            return;
          }
          if (!targetObject.geometry.morphAttributes) {
            console.error("THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.", this);
            return;
          }
          if (targetObject.morphTargetDictionary[propertyIndex] !== void 0) {
            propertyIndex = targetObject.morphTargetDictionary[propertyIndex];
          }
        }
        bindingType = this.BindingType.ArrayElement;
        this.resolvedProperty = nodeProperty;
        this.propertyIndex = propertyIndex;
      } else if (nodeProperty.fromArray !== void 0 && nodeProperty.toArray !== void 0) {
        bindingType = this.BindingType.HasFromToArray;
        this.resolvedProperty = nodeProperty;
      } else if (Array.isArray(nodeProperty)) {
        bindingType = this.BindingType.EntireArray;
        this.resolvedProperty = nodeProperty;
      } else {
        this.propertyName = propertyName;
      }
      this.getValue = this.GetterByBindingType[bindingType];
      this.setValue = this.SetterByBindingTypeAndVersioning[bindingType][versioning];
    }
    unbind() {
      this.node = null;
      this.getValue = this._getValue_unbound;
      this.setValue = this._setValue_unbound;
    }
  };
  PropertyBinding.Composite = Composite;
  PropertyBinding.prototype.BindingType = {
    Direct: 0,
    EntireArray: 1,
    ArrayElement: 2,
    HasFromToArray: 3
  };
  PropertyBinding.prototype.Versioning = {
    None: 0,
    NeedsUpdate: 1,
    MatrixWorldNeedsUpdate: 2
  };
  PropertyBinding.prototype.GetterByBindingType = [
    PropertyBinding.prototype._getValue_direct,
    PropertyBinding.prototype._getValue_array,
    PropertyBinding.prototype._getValue_arrayElement,
    PropertyBinding.prototype._getValue_toArray
  ];
  PropertyBinding.prototype.SetterByBindingTypeAndVersioning = [
    [
      // Direct
      PropertyBinding.prototype._setValue_direct,
      PropertyBinding.prototype._setValue_direct_setNeedsUpdate,
      PropertyBinding.prototype._setValue_direct_setMatrixWorldNeedsUpdate
    ],
    [
      // EntireArray
      PropertyBinding.prototype._setValue_array,
      PropertyBinding.prototype._setValue_array_setNeedsUpdate,
      PropertyBinding.prototype._setValue_array_setMatrixWorldNeedsUpdate
    ],
    [
      // ArrayElement
      PropertyBinding.prototype._setValue_arrayElement,
      PropertyBinding.prototype._setValue_arrayElement_setNeedsUpdate,
      PropertyBinding.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate
    ],
    [
      // HasToFromArray
      PropertyBinding.prototype._setValue_fromArray,
      PropertyBinding.prototype._setValue_fromArray_setNeedsUpdate,
      PropertyBinding.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate
    ]
  ];
  var AnimationObjectGroup = class {
    constructor() {
      this.isAnimationObjectGroup = true;
      this.uuid = generateUUID();
      this._objects = Array.prototype.slice.call(arguments);
      this.nCachedObjects_ = 0;
      const indices = {};
      this._indicesByUUID = indices;
      for (let i = 0, n = arguments.length; i !== n; ++i) {
        indices[arguments[i].uuid] = i;
      }
      this._paths = [];
      this._parsedPaths = [];
      this._bindings = [];
      this._bindingsIndicesByPath = {};
      const scope = this;
      this.stats = {
        objects: {
          get total() {
            return scope._objects.length;
          },
          get inUse() {
            return this.total - scope.nCachedObjects_;
          }
        },
        get bindingsPerObject() {
          return scope._bindings.length;
        }
      };
    }
    add() {
      const objects = this._objects, indicesByUUID = this._indicesByUUID, paths = this._paths, parsedPaths = this._parsedPaths, bindings = this._bindings, nBindings = bindings.length;
      let knownObject = void 0, nObjects = objects.length, nCachedObjects = this.nCachedObjects_;
      for (let i = 0, n = arguments.length; i !== n; ++i) {
        const object = arguments[i], uuid = object.uuid;
        let index = indicesByUUID[uuid];
        if (index === void 0) {
          index = nObjects++;
          indicesByUUID[uuid] = index;
          objects.push(object);
          for (let j = 0, m = nBindings; j !== m; ++j) {
            bindings[j].push(new PropertyBinding(object, paths[j], parsedPaths[j]));
          }
        } else if (index < nCachedObjects) {
          knownObject = objects[index];
          const firstActiveIndex = --nCachedObjects, lastCachedObject = objects[firstActiveIndex];
          indicesByUUID[lastCachedObject.uuid] = index;
          objects[index] = lastCachedObject;
          indicesByUUID[uuid] = firstActiveIndex;
          objects[firstActiveIndex] = object;
          for (let j = 0, m = nBindings; j !== m; ++j) {
            const bindingsForPath = bindings[j], lastCached = bindingsForPath[firstActiveIndex];
            let binding = bindingsForPath[index];
            bindingsForPath[index] = lastCached;
            if (binding === void 0) {
              binding = new PropertyBinding(object, paths[j], parsedPaths[j]);
            }
            bindingsForPath[firstActiveIndex] = binding;
          }
        } else if (objects[index] !== knownObject) {
          console.error("THREE.AnimationObjectGroup: Different objects with the same UUID detected. Clean the caches or recreate your infrastructure when reloading scenes.");
        }
      }
      this.nCachedObjects_ = nCachedObjects;
    }
    remove() {
      const objects = this._objects, indicesByUUID = this._indicesByUUID, bindings = this._bindings, nBindings = bindings.length;
      let nCachedObjects = this.nCachedObjects_;
      for (let i = 0, n = arguments.length; i !== n; ++i) {
        const object = arguments[i], uuid = object.uuid, index = indicesByUUID[uuid];
        if (index !== void 0 && index >= nCachedObjects) {
          const lastCachedIndex = nCachedObjects++, firstActiveObject = objects[lastCachedIndex];
          indicesByUUID[firstActiveObject.uuid] = index;
          objects[index] = firstActiveObject;
          indicesByUUID[uuid] = lastCachedIndex;
          objects[lastCachedIndex] = object;
          for (let j = 0, m = nBindings; j !== m; ++j) {
            const bindingsForPath = bindings[j], firstActive = bindingsForPath[lastCachedIndex], binding = bindingsForPath[index];
            bindingsForPath[index] = firstActive;
            bindingsForPath[lastCachedIndex] = binding;
          }
        }
      }
      this.nCachedObjects_ = nCachedObjects;
    }
    // remove & forget
    uncache() {
      const objects = this._objects, indicesByUUID = this._indicesByUUID, bindings = this._bindings, nBindings = bindings.length;
      let nCachedObjects = this.nCachedObjects_, nObjects = objects.length;
      for (let i = 0, n = arguments.length; i !== n; ++i) {
        const object = arguments[i], uuid = object.uuid, index = indicesByUUID[uuid];
        if (index !== void 0) {
          delete indicesByUUID[uuid];
          if (index < nCachedObjects) {
            const firstActiveIndex = --nCachedObjects, lastCachedObject = objects[firstActiveIndex], lastIndex = --nObjects, lastObject = objects[lastIndex];
            indicesByUUID[lastCachedObject.uuid] = index;
            objects[index] = lastCachedObject;
            indicesByUUID[lastObject.uuid] = firstActiveIndex;
            objects[firstActiveIndex] = lastObject;
            objects.pop();
            for (let j = 0, m = nBindings; j !== m; ++j) {
              const bindingsForPath = bindings[j], lastCached = bindingsForPath[firstActiveIndex], last = bindingsForPath[lastIndex];
              bindingsForPath[index] = lastCached;
              bindingsForPath[firstActiveIndex] = last;
              bindingsForPath.pop();
            }
          } else {
            const lastIndex = --nObjects, lastObject = objects[lastIndex];
            if (lastIndex > 0) {
              indicesByUUID[lastObject.uuid] = index;
            }
            objects[index] = lastObject;
            objects.pop();
            for (let j = 0, m = nBindings; j !== m; ++j) {
              const bindingsForPath = bindings[j];
              bindingsForPath[index] = bindingsForPath[lastIndex];
              bindingsForPath.pop();
            }
          }
        }
      }
      this.nCachedObjects_ = nCachedObjects;
    }
    // Internal interface used by befriended PropertyBinding.Composite:
    subscribe_(path, parsedPath) {
      const indicesByPath = this._bindingsIndicesByPath;
      let index = indicesByPath[path];
      const bindings = this._bindings;
      if (index !== void 0) return bindings[index];
      const paths = this._paths, parsedPaths = this._parsedPaths, objects = this._objects, nObjects = objects.length, nCachedObjects = this.nCachedObjects_, bindingsForPath = new Array(nObjects);
      index = bindings.length;
      indicesByPath[path] = index;
      paths.push(path);
      parsedPaths.push(parsedPath);
      bindings.push(bindingsForPath);
      for (let i = nCachedObjects, n = objects.length; i !== n; ++i) {
        const object = objects[i];
        bindingsForPath[i] = new PropertyBinding(object, path, parsedPath);
      }
      return bindingsForPath;
    }
    unsubscribe_(path) {
      const indicesByPath = this._bindingsIndicesByPath, index = indicesByPath[path];
      if (index !== void 0) {
        const paths = this._paths, parsedPaths = this._parsedPaths, bindings = this._bindings, lastBindingsIndex = bindings.length - 1, lastBindings = bindings[lastBindingsIndex], lastBindingsPath = path[lastBindingsIndex];
        indicesByPath[lastBindingsPath] = index;
        bindings[index] = lastBindings;
        bindings.pop();
        parsedPaths[index] = parsedPaths[lastBindingsIndex];
        parsedPaths.pop();
        paths[index] = paths[lastBindingsIndex];
        paths.pop();
      }
    }
  };
  var AnimationAction = class {
    constructor(mixer, clip, localRoot = null, blendMode = clip.blendMode) {
      this._mixer = mixer;
      this._clip = clip;
      this._localRoot = localRoot;
      this.blendMode = blendMode;
      const tracks = clip.tracks, nTracks = tracks.length, interpolants = new Array(nTracks);
      const interpolantSettings = {
        endingStart: ZeroCurvatureEnding,
        endingEnd: ZeroCurvatureEnding
      };
      for (let i = 0; i !== nTracks; ++i) {
        const interpolant = tracks[i].createInterpolant(null);
        interpolants[i] = interpolant;
        interpolant.settings = interpolantSettings;
      }
      this._interpolantSettings = interpolantSettings;
      this._interpolants = interpolants;
      this._propertyBindings = new Array(nTracks);
      this._cacheIndex = null;
      this._byClipCacheIndex = null;
      this._timeScaleInterpolant = null;
      this._weightInterpolant = null;
      this.loop = LoopRepeat;
      this._loopCount = -1;
      this._startTime = null;
      this.time = 0;
      this.timeScale = 1;
      this._effectiveTimeScale = 1;
      this.weight = 1;
      this._effectiveWeight = 1;
      this.repetitions = Infinity;
      this.paused = false;
      this.enabled = true;
      this.clampWhenFinished = false;
      this.zeroSlopeAtStart = true;
      this.zeroSlopeAtEnd = true;
    }
    // State & Scheduling
    play() {
      this._mixer._activateAction(this);
      return this;
    }
    stop() {
      this._mixer._deactivateAction(this);
      return this.reset();
    }
    reset() {
      this.paused = false;
      this.enabled = true;
      this.time = 0;
      this._loopCount = -1;
      this._startTime = null;
      return this.stopFading().stopWarping();
    }
    isRunning() {
      return this.enabled && !this.paused && this.timeScale !== 0 && this._startTime === null && this._mixer._isActiveAction(this);
    }
    // return true when play has been called
    isScheduled() {
      return this._mixer._isActiveAction(this);
    }
    startAt(time) {
      this._startTime = time;
      return this;
    }
    setLoop(mode, repetitions) {
      this.loop = mode;
      this.repetitions = repetitions;
      return this;
    }
    // Weight
    // set the weight stopping any scheduled fading
    // although .enabled = false yields an effective weight of zero, this
    // method does *not* change .enabled, because it would be confusing
    setEffectiveWeight(weight) {
      this.weight = weight;
      this._effectiveWeight = this.enabled ? weight : 0;
      return this.stopFading();
    }
    // return the weight considering fading and .enabled
    getEffectiveWeight() {
      return this._effectiveWeight;
    }
    fadeIn(duration) {
      return this._scheduleFading(duration, 0, 1);
    }
    fadeOut(duration) {
      return this._scheduleFading(duration, 1, 0);
    }
    crossFadeFrom(fadeOutAction, duration, warp) {
      fadeOutAction.fadeOut(duration);
      this.fadeIn(duration);
      if (warp) {
        const fadeInDuration = this._clip.duration, fadeOutDuration = fadeOutAction._clip.duration, startEndRatio = fadeOutDuration / fadeInDuration, endStartRatio = fadeInDuration / fadeOutDuration;
        fadeOutAction.warp(1, startEndRatio, duration);
        this.warp(endStartRatio, 1, duration);
      }
      return this;
    }
    crossFadeTo(fadeInAction, duration, warp) {
      return fadeInAction.crossFadeFrom(this, duration, warp);
    }
    stopFading() {
      const weightInterpolant = this._weightInterpolant;
      if (weightInterpolant !== null) {
        this._weightInterpolant = null;
        this._mixer._takeBackControlInterpolant(weightInterpolant);
      }
      return this;
    }
    // Time Scale Control
    // set the time scale stopping any scheduled warping
    // although .paused = true yields an effective time scale of zero, this
    // method does *not* change .paused, because it would be confusing
    setEffectiveTimeScale(timeScale) {
      this.timeScale = timeScale;
      this._effectiveTimeScale = this.paused ? 0 : timeScale;
      return this.stopWarping();
    }
    // return the time scale considering warping and .paused
    getEffectiveTimeScale() {
      return this._effectiveTimeScale;
    }
    setDuration(duration) {
      this.timeScale = this._clip.duration / duration;
      return this.stopWarping();
    }
    syncWith(action) {
      this.time = action.time;
      this.timeScale = action.timeScale;
      return this.stopWarping();
    }
    halt(duration) {
      return this.warp(this._effectiveTimeScale, 0, duration);
    }
    warp(startTimeScale, endTimeScale, duration) {
      const mixer = this._mixer, now2 = mixer.time, timeScale = this.timeScale;
      let interpolant = this._timeScaleInterpolant;
      if (interpolant === null) {
        interpolant = mixer._lendControlInterpolant();
        this._timeScaleInterpolant = interpolant;
      }
      const times = interpolant.parameterPositions, values = interpolant.sampleValues;
      times[0] = now2;
      times[1] = now2 + duration;
      values[0] = startTimeScale / timeScale;
      values[1] = endTimeScale / timeScale;
      return this;
    }
    stopWarping() {
      const timeScaleInterpolant = this._timeScaleInterpolant;
      if (timeScaleInterpolant !== null) {
        this._timeScaleInterpolant = null;
        this._mixer._takeBackControlInterpolant(timeScaleInterpolant);
      }
      return this;
    }
    // Object Accessors
    getMixer() {
      return this._mixer;
    }
    getClip() {
      return this._clip;
    }
    getRoot() {
      return this._localRoot || this._mixer._root;
    }
    // Interna
    _update(time, deltaTime, timeDirection, accuIndex) {
      if (!this.enabled) {
        this._updateWeight(time);
        return;
      }
      const startTime = this._startTime;
      if (startTime !== null) {
        const timeRunning = (time - startTime) * timeDirection;
        if (timeRunning < 0 || timeDirection === 0) {
          deltaTime = 0;
        } else {
          this._startTime = null;
          deltaTime = timeDirection * timeRunning;
        }
      }
      deltaTime *= this._updateTimeScale(time);
      const clipTime = this._updateTime(deltaTime);
      const weight = this._updateWeight(time);
      if (weight > 0) {
        const interpolants = this._interpolants;
        const propertyMixers = this._propertyBindings;
        switch (this.blendMode) {
          case AdditiveAnimationBlendMode:
            for (let j = 0, m = interpolants.length; j !== m; ++j) {
              interpolants[j].evaluate(clipTime);
              propertyMixers[j].accumulateAdditive(weight);
            }
            break;
          case NormalAnimationBlendMode:
          default:
            for (let j = 0, m = interpolants.length; j !== m; ++j) {
              interpolants[j].evaluate(clipTime);
              propertyMixers[j].accumulate(accuIndex, weight);
            }
        }
      }
    }
    _updateWeight(time) {
      let weight = 0;
      if (this.enabled) {
        weight = this.weight;
        const interpolant = this._weightInterpolant;
        if (interpolant !== null) {
          const interpolantValue = interpolant.evaluate(time)[0];
          weight *= interpolantValue;
          if (time > interpolant.parameterPositions[1]) {
            this.stopFading();
            if (interpolantValue === 0) {
              this.enabled = false;
            }
          }
        }
      }
      this._effectiveWeight = weight;
      return weight;
    }
    _updateTimeScale(time) {
      let timeScale = 0;
      if (!this.paused) {
        timeScale = this.timeScale;
        const interpolant = this._timeScaleInterpolant;
        if (interpolant !== null) {
          const interpolantValue = interpolant.evaluate(time)[0];
          timeScale *= interpolantValue;
          if (time > interpolant.parameterPositions[1]) {
            this.stopWarping();
            if (timeScale === 0) {
              this.paused = true;
            } else {
              this.timeScale = timeScale;
            }
          }
        }
      }
      this._effectiveTimeScale = timeScale;
      return timeScale;
    }
    _updateTime(deltaTime) {
      const duration = this._clip.duration;
      const loop = this.loop;
      let time = this.time + deltaTime;
      let loopCount = this._loopCount;
      const pingPong = loop === LoopPingPong;
      if (deltaTime === 0) {
        if (loopCount === -1) return time;
        return pingPong && (loopCount & 1) === 1 ? duration - time : time;
      }
      if (loop === LoopOnce) {
        if (loopCount === -1) {
          this._loopCount = 0;
          this._setEndings(true, true, false);
        }
        handle_stop: {
          if (time >= duration) {
            time = duration;
          } else if (time < 0) {
            time = 0;
          } else {
            this.time = time;
            break handle_stop;
          }
          if (this.clampWhenFinished) this.paused = true;
          else this.enabled = false;
          this.time = time;
          this._mixer.dispatchEvent({
            type: "finished",
            action: this,
            direction: deltaTime < 0 ? -1 : 1
          });
        }
      } else {
        if (loopCount === -1) {
          if (deltaTime >= 0) {
            loopCount = 0;
            this._setEndings(true, this.repetitions === 0, pingPong);
          } else {
            this._setEndings(this.repetitions === 0, true, pingPong);
          }
        }
        if (time >= duration || time < 0) {
          const loopDelta = Math.floor(time / duration);
          time -= duration * loopDelta;
          loopCount += Math.abs(loopDelta);
          const pending = this.repetitions - loopCount;
          if (pending <= 0) {
            if (this.clampWhenFinished) this.paused = true;
            else this.enabled = false;
            time = deltaTime > 0 ? duration : 0;
            this.time = time;
            this._mixer.dispatchEvent({
              type: "finished",
              action: this,
              direction: deltaTime > 0 ? 1 : -1
            });
          } else {
            if (pending === 1) {
              const atStart = deltaTime < 0;
              this._setEndings(atStart, !atStart, pingPong);
            } else {
              this._setEndings(false, false, pingPong);
            }
            this._loopCount = loopCount;
            this.time = time;
            this._mixer.dispatchEvent({
              type: "loop",
              action: this,
              loopDelta
            });
          }
        } else {
          this.time = time;
        }
        if (pingPong && (loopCount & 1) === 1) {
          return duration - time;
        }
      }
      return time;
    }
    _setEndings(atStart, atEnd, pingPong) {
      const settings = this._interpolantSettings;
      if (pingPong) {
        settings.endingStart = ZeroSlopeEnding;
        settings.endingEnd = ZeroSlopeEnding;
      } else {
        if (atStart) {
          settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;
        } else {
          settings.endingStart = WrapAroundEnding;
        }
        if (atEnd) {
          settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;
        } else {
          settings.endingEnd = WrapAroundEnding;
        }
      }
    }
    _scheduleFading(duration, weightNow, weightThen) {
      const mixer = this._mixer, now2 = mixer.time;
      let interpolant = this._weightInterpolant;
      if (interpolant === null) {
        interpolant = mixer._lendControlInterpolant();
        this._weightInterpolant = interpolant;
      }
      const times = interpolant.parameterPositions, values = interpolant.sampleValues;
      times[0] = now2;
      values[0] = weightNow;
      times[1] = now2 + duration;
      values[1] = weightThen;
      return this;
    }
  };
  var _controlInterpolantsResultBuffer = new Float32Array(1);
  var AnimationMixer = class extends EventDispatcher {
    constructor(root) {
      super();
      this._root = root;
      this._initMemoryManager();
      this._accuIndex = 0;
      this.time = 0;
      this.timeScale = 1;
    }
    _bindAction(action, prototypeAction) {
      const root = action._localRoot || this._root, tracks = action._clip.tracks, nTracks = tracks.length, bindings = action._propertyBindings, interpolants = action._interpolants, rootUuid = root.uuid, bindingsByRoot = this._bindingsByRootAndName;
      let bindingsByName = bindingsByRoot[rootUuid];
      if (bindingsByName === void 0) {
        bindingsByName = {};
        bindingsByRoot[rootUuid] = bindingsByName;
      }
      for (let i = 0; i !== nTracks; ++i) {
        const track = tracks[i], trackName = track.name;
        let binding = bindingsByName[trackName];
        if (binding !== void 0) {
          ++binding.referenceCount;
          bindings[i] = binding;
        } else {
          binding = bindings[i];
          if (binding !== void 0) {
            if (binding._cacheIndex === null) {
              ++binding.referenceCount;
              this._addInactiveBinding(binding, rootUuid, trackName);
            }
            continue;
          }
          const path = prototypeAction && prototypeAction._propertyBindings[i].binding.parsedPath;
          binding = new PropertyMixer(
            PropertyBinding.create(root, trackName, path),
            track.ValueTypeName,
            track.getValueSize()
          );
          ++binding.referenceCount;
          this._addInactiveBinding(binding, rootUuid, trackName);
          bindings[i] = binding;
        }
        interpolants[i].resultBuffer = binding.buffer;
      }
    }
    _activateAction(action) {
      if (!this._isActiveAction(action)) {
        if (action._cacheIndex === null) {
          const rootUuid = (action._localRoot || this._root).uuid, clipUuid = action._clip.uuid, actionsForClip = this._actionsByClip[clipUuid];
          this._bindAction(
            action,
            actionsForClip && actionsForClip.knownActions[0]
          );
          this._addInactiveAction(action, clipUuid, rootUuid);
        }
        const bindings = action._propertyBindings;
        for (let i = 0, n = bindings.length; i !== n; ++i) {
          const binding = bindings[i];
          if (binding.useCount++ === 0) {
            this._lendBinding(binding);
            binding.saveOriginalState();
          }
        }
        this._lendAction(action);
      }
    }
    _deactivateAction(action) {
      if (this._isActiveAction(action)) {
        const bindings = action._propertyBindings;
        for (let i = 0, n = bindings.length; i !== n; ++i) {
          const binding = bindings[i];
          if (--binding.useCount === 0) {
            binding.restoreOriginalState();
            this._takeBackBinding(binding);
          }
        }
        this._takeBackAction(action);
      }
    }
    // Memory manager
    _initMemoryManager() {
      this._actions = [];
      this._nActiveActions = 0;
      this._actionsByClip = {};
      this._bindings = [];
      this._nActiveBindings = 0;
      this._bindingsByRootAndName = {};
      this._controlInterpolants = [];
      this._nActiveControlInterpolants = 0;
      const scope = this;
      this.stats = {
        actions: {
          get total() {
            return scope._actions.length;
          },
          get inUse() {
            return scope._nActiveActions;
          }
        },
        bindings: {
          get total() {
            return scope._bindings.length;
          },
          get inUse() {
            return scope._nActiveBindings;
          }
        },
        controlInterpolants: {
          get total() {
            return scope._controlInterpolants.length;
          },
          get inUse() {
            return scope._nActiveControlInterpolants;
          }
        }
      };
    }
    // Memory management for AnimationAction objects
    _isActiveAction(action) {
      const index = action._cacheIndex;
      return index !== null && index < this._nActiveActions;
    }
    _addInactiveAction(action, clipUuid, rootUuid) {
      const actions = this._actions, actionsByClip = this._actionsByClip;
      let actionsForClip = actionsByClip[clipUuid];
      if (actionsForClip === void 0) {
        actionsForClip = {
          knownActions: [action],
          actionByRoot: {}
        };
        action._byClipCacheIndex = 0;
        actionsByClip[clipUuid] = actionsForClip;
      } else {
        const knownActions = actionsForClip.knownActions;
        action._byClipCacheIndex = knownActions.length;
        knownActions.push(action);
      }
      action._cacheIndex = actions.length;
      actions.push(action);
      actionsForClip.actionByRoot[rootUuid] = action;
    }
    _removeInactiveAction(action) {
      const actions = this._actions, lastInactiveAction = actions[actions.length - 1], cacheIndex = action._cacheIndex;
      lastInactiveAction._cacheIndex = cacheIndex;
      actions[cacheIndex] = lastInactiveAction;
      actions.pop();
      action._cacheIndex = null;
      const clipUuid = action._clip.uuid, actionsByClip = this._actionsByClip, actionsForClip = actionsByClip[clipUuid], knownActionsForClip = actionsForClip.knownActions, lastKnownAction = knownActionsForClip[knownActionsForClip.length - 1], byClipCacheIndex = action._byClipCacheIndex;
      lastKnownAction._byClipCacheIndex = byClipCacheIndex;
      knownActionsForClip[byClipCacheIndex] = lastKnownAction;
      knownActionsForClip.pop();
      action._byClipCacheIndex = null;
      const actionByRoot = actionsForClip.actionByRoot, rootUuid = (action._localRoot || this._root).uuid;
      delete actionByRoot[rootUuid];
      if (knownActionsForClip.length === 0) {
        delete actionsByClip[clipUuid];
      }
      this._removeInactiveBindingsForAction(action);
    }
    _removeInactiveBindingsForAction(action) {
      const bindings = action._propertyBindings;
      for (let i = 0, n = bindings.length; i !== n; ++i) {
        const binding = bindings[i];
        if (--binding.referenceCount === 0) {
          this._removeInactiveBinding(binding);
        }
      }
    }
    _lendAction(action) {
      const actions = this._actions, prevIndex = action._cacheIndex, lastActiveIndex = this._nActiveActions++, firstInactiveAction = actions[lastActiveIndex];
      action._cacheIndex = lastActiveIndex;
      actions[lastActiveIndex] = action;
      firstInactiveAction._cacheIndex = prevIndex;
      actions[prevIndex] = firstInactiveAction;
    }
    _takeBackAction(action) {
      const actions = this._actions, prevIndex = action._cacheIndex, firstInactiveIndex = --this._nActiveActions, lastActiveAction = actions[firstInactiveIndex];
      action._cacheIndex = firstInactiveIndex;
      actions[firstInactiveIndex] = action;
      lastActiveAction._cacheIndex = prevIndex;
      actions[prevIndex] = lastActiveAction;
    }
    // Memory management for PropertyMixer objects
    _addInactiveBinding(binding, rootUuid, trackName) {
      const bindingsByRoot = this._bindingsByRootAndName, bindings = this._bindings;
      let bindingByName = bindingsByRoot[rootUuid];
      if (bindingByName === void 0) {
        bindingByName = {};
        bindingsByRoot[rootUuid] = bindingByName;
      }
      bindingByName[trackName] = binding;
      binding._cacheIndex = bindings.length;
      bindings.push(binding);
    }
    _removeInactiveBinding(binding) {
      const bindings = this._bindings, propBinding = binding.binding, rootUuid = propBinding.rootNode.uuid, trackName = propBinding.path, bindingsByRoot = this._bindingsByRootAndName, bindingByName = bindingsByRoot[rootUuid], lastInactiveBinding = bindings[bindings.length - 1], cacheIndex = binding._cacheIndex;
      lastInactiveBinding._cacheIndex = cacheIndex;
      bindings[cacheIndex] = lastInactiveBinding;
      bindings.pop();
      delete bindingByName[trackName];
      if (Object.keys(bindingByName).length === 0) {
        delete bindingsByRoot[rootUuid];
      }
    }
    _lendBinding(binding) {
      const bindings = this._bindings, prevIndex = binding._cacheIndex, lastActiveIndex = this._nActiveBindings++, firstInactiveBinding = bindings[lastActiveIndex];
      binding._cacheIndex = lastActiveIndex;
      bindings[lastActiveIndex] = binding;
      firstInactiveBinding._cacheIndex = prevIndex;
      bindings[prevIndex] = firstInactiveBinding;
    }
    _takeBackBinding(binding) {
      const bindings = this._bindings, prevIndex = binding._cacheIndex, firstInactiveIndex = --this._nActiveBindings, lastActiveBinding = bindings[firstInactiveIndex];
      binding._cacheIndex = firstInactiveIndex;
      bindings[firstInactiveIndex] = binding;
      lastActiveBinding._cacheIndex = prevIndex;
      bindings[prevIndex] = lastActiveBinding;
    }
    // Memory management of Interpolants for weight and time scale
    _lendControlInterpolant() {
      const interpolants = this._controlInterpolants, lastActiveIndex = this._nActiveControlInterpolants++;
      let interpolant = interpolants[lastActiveIndex];
      if (interpolant === void 0) {
        interpolant = new LinearInterpolant(
          new Float32Array(2),
          new Float32Array(2),
          1,
          _controlInterpolantsResultBuffer
        );
        interpolant.__cacheIndex = lastActiveIndex;
        interpolants[lastActiveIndex] = interpolant;
      }
      return interpolant;
    }
    _takeBackControlInterpolant(interpolant) {
      const interpolants = this._controlInterpolants, prevIndex = interpolant.__cacheIndex, firstInactiveIndex = --this._nActiveControlInterpolants, lastActiveInterpolant = interpolants[firstInactiveIndex];
      interpolant.__cacheIndex = firstInactiveIndex;
      interpolants[firstInactiveIndex] = interpolant;
      lastActiveInterpolant.__cacheIndex = prevIndex;
      interpolants[prevIndex] = lastActiveInterpolant;
    }
    // return an action for a clip optionally using a custom root target
    // object (this method allocates a lot of dynamic memory in case a
    // previously unknown clip/root combination is specified)
    clipAction(clip, optionalRoot, blendMode) {
      const root = optionalRoot || this._root, rootUuid = root.uuid;
      let clipObject = typeof clip === "string" ? AnimationClip.findByName(root, clip) : clip;
      const clipUuid = clipObject !== null ? clipObject.uuid : clip;
      const actionsForClip = this._actionsByClip[clipUuid];
      let prototypeAction = null;
      if (blendMode === void 0) {
        if (clipObject !== null) {
          blendMode = clipObject.blendMode;
        } else {
          blendMode = NormalAnimationBlendMode;
        }
      }
      if (actionsForClip !== void 0) {
        const existingAction = actionsForClip.actionByRoot[rootUuid];
        if (existingAction !== void 0 && existingAction.blendMode === blendMode) {
          return existingAction;
        }
        prototypeAction = actionsForClip.knownActions[0];
        if (clipObject === null)
          clipObject = prototypeAction._clip;
      }
      if (clipObject === null) return null;
      const newAction = new AnimationAction(this, clipObject, optionalRoot, blendMode);
      this._bindAction(newAction, prototypeAction);
      this._addInactiveAction(newAction, clipUuid, rootUuid);
      return newAction;
    }
    // get an existing action
    existingAction(clip, optionalRoot) {
      const root = optionalRoot || this._root, rootUuid = root.uuid, clipObject = typeof clip === "string" ? AnimationClip.findByName(root, clip) : clip, clipUuid = clipObject ? clipObject.uuid : clip, actionsForClip = this._actionsByClip[clipUuid];
      if (actionsForClip !== void 0) {
        return actionsForClip.actionByRoot[rootUuid] || null;
      }
      return null;
    }
    // deactivates all previously scheduled actions
    stopAllAction() {
      const actions = this._actions, nActions = this._nActiveActions;
      for (let i = nActions - 1; i >= 0; --i) {
        actions[i].stop();
      }
      return this;
    }
    // advance the time and update apply the animation
    update(deltaTime) {
      deltaTime *= this.timeScale;
      const actions = this._actions, nActions = this._nActiveActions, time = this.time += deltaTime, timeDirection = Math.sign(deltaTime), accuIndex = this._accuIndex ^= 1;
      for (let i = 0; i !== nActions; ++i) {
        const action = actions[i];
        action._update(time, deltaTime, timeDirection, accuIndex);
      }
      const bindings = this._bindings, nBindings = this._nActiveBindings;
      for (let i = 0; i !== nBindings; ++i) {
        bindings[i].apply(accuIndex);
      }
      return this;
    }
    // Allows you to seek to a specific time in an animation.
    setTime(timeInSeconds) {
      this.time = 0;
      for (let i = 0; i < this._actions.length; i++) {
        this._actions[i].time = 0;
      }
      return this.update(timeInSeconds);
    }
    // return this mixer's root target object
    getRoot() {
      return this._root;
    }
    // free all resources specific to a particular clip
    uncacheClip(clip) {
      const actions = this._actions, clipUuid = clip.uuid, actionsByClip = this._actionsByClip, actionsForClip = actionsByClip[clipUuid];
      if (actionsForClip !== void 0) {
        const actionsToRemove = actionsForClip.knownActions;
        for (let i = 0, n = actionsToRemove.length; i !== n; ++i) {
          const action = actionsToRemove[i];
          this._deactivateAction(action);
          const cacheIndex = action._cacheIndex, lastInactiveAction = actions[actions.length - 1];
          action._cacheIndex = null;
          action._byClipCacheIndex = null;
          lastInactiveAction._cacheIndex = cacheIndex;
          actions[cacheIndex] = lastInactiveAction;
          actions.pop();
          this._removeInactiveBindingsForAction(action);
        }
        delete actionsByClip[clipUuid];
      }
    }
    // free all resources specific to a particular root target object
    uncacheRoot(root) {
      const rootUuid = root.uuid, actionsByClip = this._actionsByClip;
      for (const clipUuid in actionsByClip) {
        const actionByRoot = actionsByClip[clipUuid].actionByRoot, action = actionByRoot[rootUuid];
        if (action !== void 0) {
          this._deactivateAction(action);
          this._removeInactiveAction(action);
        }
      }
      const bindingsByRoot = this._bindingsByRootAndName, bindingByName = bindingsByRoot[rootUuid];
      if (bindingByName !== void 0) {
        for (const trackName in bindingByName) {
          const binding = bindingByName[trackName];
          binding.restoreOriginalState();
          this._removeInactiveBinding(binding);
        }
      }
    }
    // remove a targeted clip from the cache
    uncacheAction(clip, optionalRoot) {
      const action = this.existingAction(clip, optionalRoot);
      if (action !== null) {
        this._deactivateAction(action);
        this._removeInactiveAction(action);
      }
    }
  };
  var Uniform = class _Uniform {
    constructor(value) {
      this.value = value;
    }
    clone() {
      return new _Uniform(this.value.clone === void 0 ? this.value : this.value.clone());
    }
  };
  var _id = 0;
  var UniformsGroup = class extends EventDispatcher {
    constructor() {
      super();
      this.isUniformsGroup = true;
      Object.defineProperty(this, "id", { value: _id++ });
      this.name = "";
      this.usage = StaticDrawUsage;
      this.uniforms = [];
    }
    add(uniform) {
      this.uniforms.push(uniform);
      return this;
    }
    remove(uniform) {
      const index = this.uniforms.indexOf(uniform);
      if (index !== -1) this.uniforms.splice(index, 1);
      return this;
    }
    setName(name) {
      this.name = name;
      return this;
    }
    setUsage(value) {
      this.usage = value;
      return this;
    }
    dispose() {
      this.dispatchEvent({ type: "dispose" });
      return this;
    }
    copy(source) {
      this.name = source.name;
      this.usage = source.usage;
      const uniformsSource = source.uniforms;
      this.uniforms.length = 0;
      for (let i = 0, l = uniformsSource.length; i < l; i++) {
        const uniforms = Array.isArray(uniformsSource[i]) ? uniformsSource[i] : [uniformsSource[i]];
        for (let j = 0; j < uniforms.length; j++) {
          this.uniforms.push(uniforms[j].clone());
        }
      }
      return this;
    }
    clone() {
      return new this.constructor().copy(this);
    }
  };
  var InstancedInterleavedBuffer = class extends InterleavedBuffer {
    constructor(array, stride, meshPerAttribute = 1) {
      super(array, stride);
      this.isInstancedInterleavedBuffer = true;
      this.meshPerAttribute = meshPerAttribute;
    }
    copy(source) {
      super.copy(source);
      this.meshPerAttribute = source.meshPerAttribute;
      return this;
    }
    clone(data) {
      const ib = super.clone(data);
      ib.meshPerAttribute = this.meshPerAttribute;
      return ib;
    }
    toJSON(data) {
      const json = super.toJSON(data);
      json.isInstancedInterleavedBuffer = true;
      json.meshPerAttribute = this.meshPerAttribute;
      return json;
    }
  };
  var GLBufferAttribute = class {
    constructor(buffer, type, itemSize, elementSize, count) {
      this.isGLBufferAttribute = true;
      this.name = "";
      this.buffer = buffer;
      this.type = type;
      this.itemSize = itemSize;
      this.elementSize = elementSize;
      this.count = count;
      this.version = 0;
    }
    set needsUpdate(value) {
      if (value === true) this.version++;
    }
    setBuffer(buffer) {
      this.buffer = buffer;
      return this;
    }
    setType(type, elementSize) {
      this.type = type;
      this.elementSize = elementSize;
      return this;
    }
    setItemSize(itemSize) {
      this.itemSize = itemSize;
      return this;
    }
    setCount(count) {
      this.count = count;
      return this;
    }
  };
  var Raycaster = class {
    constructor(origin, direction, near = 0, far = Infinity) {
      this.ray = new Ray(origin, direction);
      this.near = near;
      this.far = far;
      this.camera = null;
      this.layers = new Layers();
      this.params = {
        Mesh: {},
        Line: { threshold: 1 },
        LOD: {},
        Points: { threshold: 1 },
        Sprite: {}
      };
    }
    set(origin, direction) {
      this.ray.set(origin, direction);
    }
    setFromCamera(coords, camera) {
      if (camera.isPerspectiveCamera) {
        this.ray.origin.setFromMatrixPosition(camera.matrixWorld);
        this.ray.direction.set(coords.x, coords.y, 0.5).unproject(camera).sub(this.ray.origin).normalize();
        this.camera = camera;
      } else if (camera.isOrthographicCamera) {
        this.ray.origin.set(coords.x, coords.y, (camera.near + camera.far) / (camera.near - camera.far)).unproject(camera);
        this.ray.direction.set(0, 0, -1).transformDirection(camera.matrixWorld);
        this.camera = camera;
      } else {
        console.error("THREE.Raycaster: Unsupported camera type: " + camera.type);
      }
    }
    intersectObject(object, recursive = true, intersects2 = []) {
      intersectObject(object, this, intersects2, recursive);
      intersects2.sort(ascSort);
      return intersects2;
    }
    intersectObjects(objects, recursive = true, intersects2 = []) {
      for (let i = 0, l = objects.length; i < l; i++) {
        intersectObject(objects[i], this, intersects2, recursive);
      }
      intersects2.sort(ascSort);
      return intersects2;
    }
  };
  function ascSort(a, b) {
    return a.distance - b.distance;
  }
  function intersectObject(object, raycaster, intersects2, recursive) {
    if (object.layers.test(raycaster.layers)) {
      object.raycast(raycaster, intersects2);
    }
    if (recursive === true) {
      const children = object.children;
      for (let i = 0, l = children.length; i < l; i++) {
        intersectObject(children[i], raycaster, intersects2, true);
      }
    }
  }
  var Spherical = class {
    constructor(radius = 1, phi = 0, theta = 0) {
      this.radius = radius;
      this.phi = phi;
      this.theta = theta;
      return this;
    }
    set(radius, phi, theta) {
      this.radius = radius;
      this.phi = phi;
      this.theta = theta;
      return this;
    }
    copy(other) {
      this.radius = other.radius;
      this.phi = other.phi;
      this.theta = other.theta;
      return this;
    }
    // restrict phi to be between EPS and PI-EPS
    makeSafe() {
      const EPS = 1e-6;
      this.phi = Math.max(EPS, Math.min(Math.PI - EPS, this.phi));
      return this;
    }
    setFromVector3(v) {
      return this.setFromCartesianCoords(v.x, v.y, v.z);
    }
    setFromCartesianCoords(x, y, z) {
      this.radius = Math.sqrt(x * x + y * y + z * z);
      if (this.radius === 0) {
        this.theta = 0;
        this.phi = 0;
      } else {
        this.theta = Math.atan2(x, z);
        this.phi = Math.acos(clamp(y / this.radius, -1, 1));
      }
      return this;
    }
    clone() {
      return new this.constructor().copy(this);
    }
  };
  var Cylindrical = class {
    constructor(radius = 1, theta = 0, y = 0) {
      this.radius = radius;
      this.theta = theta;
      this.y = y;
      return this;
    }
    set(radius, theta, y) {
      this.radius = radius;
      this.theta = theta;
      this.y = y;
      return this;
    }
    copy(other) {
      this.radius = other.radius;
      this.theta = other.theta;
      this.y = other.y;
      return this;
    }
    setFromVector3(v) {
      return this.setFromCartesianCoords(v.x, v.y, v.z);
    }
    setFromCartesianCoords(x, y, z) {
      this.radius = Math.sqrt(x * x + z * z);
      this.theta = Math.atan2(x, z);
      this.y = y;
      return this;
    }
    clone() {
      return new this.constructor().copy(this);
    }
  };
  var _vector$4 = /* @__PURE__ */ new Vector2();
  var Box2 = class {
    constructor(min = new Vector2(Infinity, Infinity), max2 = new Vector2(-Infinity, -Infinity)) {
      this.isBox2 = true;
      this.min = min;
      this.max = max2;
    }
    set(min, max2) {
      this.min.copy(min);
      this.max.copy(max2);
      return this;
    }
    setFromPoints(points) {
      this.makeEmpty();
      for (let i = 0, il = points.length; i < il; i++) {
        this.expandByPoint(points[i]);
      }
      return this;
    }
    setFromCenterAndSize(center, size) {
      const halfSize = _vector$4.copy(size).multiplyScalar(0.5);
      this.min.copy(center).sub(halfSize);
      this.max.copy(center).add(halfSize);
      return this;
    }
    clone() {
      return new this.constructor().copy(this);
    }
    copy(box) {
      this.min.copy(box.min);
      this.max.copy(box.max);
      return this;
    }
    makeEmpty() {
      this.min.x = this.min.y = Infinity;
      this.max.x = this.max.y = -Infinity;
      return this;
    }
    isEmpty() {
      return this.max.x < this.min.x || this.max.y < this.min.y;
    }
    getCenter(target) {
      return this.isEmpty() ? target.set(0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
    }
    getSize(target) {
      return this.isEmpty() ? target.set(0, 0) : target.subVectors(this.max, this.min);
    }
    expandByPoint(point) {
      this.min.min(point);
      this.max.max(point);
      return this;
    }
    expandByVector(vector) {
      this.min.sub(vector);
      this.max.add(vector);
      return this;
    }
    expandByScalar(scalar) {
      this.min.addScalar(-scalar);
      this.max.addScalar(scalar);
      return this;
    }
    containsPoint(point) {
      return point.x < this.min.x || point.x > this.max.x || point.y < this.min.y || point.y > this.max.y ? false : true;
    }
    containsBox(box) {
      return this.min.x <= box.min.x && box.max.x <= this.max.x && this.min.y <= box.min.y && box.max.y <= this.max.y;
    }
    getParameter(point, target) {
      return target.set(
        (point.x - this.min.x) / (this.max.x - this.min.x),
        (point.y - this.min.y) / (this.max.y - this.min.y)
      );
    }
    intersectsBox(box) {
      return box.max.x < this.min.x || box.min.x > this.max.x || box.max.y < this.min.y || box.min.y > this.max.y ? false : true;
    }
    clampPoint(point, target) {
      return target.copy(point).clamp(this.min, this.max);
    }
    distanceToPoint(point) {
      return this.clampPoint(point, _vector$4).distanceTo(point);
    }
    intersect(box) {
      this.min.max(box.min);
      this.max.min(box.max);
      if (this.isEmpty()) this.makeEmpty();
      return this;
    }
    union(box) {
      this.min.min(box.min);
      this.max.max(box.max);
      return this;
    }
    translate(offset) {
      this.min.add(offset);
      this.max.add(offset);
      return this;
    }
    equals(box) {
      return box.min.equals(this.min) && box.max.equals(this.max);
    }
  };
  var _startP = /* @__PURE__ */ new Vector3();
  var _startEnd = /* @__PURE__ */ new Vector3();
  var Line3 = class {
    constructor(start = new Vector3(), end = new Vector3()) {
      this.start = start;
      this.end = end;
    }
    set(start, end) {
      this.start.copy(start);
      this.end.copy(end);
      return this;
    }
    copy(line) {
      this.start.copy(line.start);
      this.end.copy(line.end);
      return this;
    }
    getCenter(target) {
      return target.addVectors(this.start, this.end).multiplyScalar(0.5);
    }
    delta(target) {
      return target.subVectors(this.end, this.start);
    }
    distanceSq() {
      return this.start.distanceToSquared(this.end);
    }
    distance() {
      return this.start.distanceTo(this.end);
    }
    at(t, target) {
      return this.delta(target).multiplyScalar(t).add(this.start);
    }
    closestPointToPointParameter(point, clampToLine) {
      _startP.subVectors(point, this.start);
      _startEnd.subVectors(this.end, this.start);
      const startEnd2 = _startEnd.dot(_startEnd);
      const startEnd_startP = _startEnd.dot(_startP);
      let t = startEnd_startP / startEnd2;
      if (clampToLine) {
        t = clamp(t, 0, 1);
      }
      return t;
    }
    closestPointToPoint(point, clampToLine, target) {
      const t = this.closestPointToPointParameter(point, clampToLine);
      return this.delta(target).multiplyScalar(t).add(this.start);
    }
    applyMatrix4(matrix) {
      this.start.applyMatrix4(matrix);
      this.end.applyMatrix4(matrix);
      return this;
    }
    equals(line) {
      return line.start.equals(this.start) && line.end.equals(this.end);
    }
    clone() {
      return new this.constructor().copy(this);
    }
  };
  var _vector$3 = /* @__PURE__ */ new Vector3();
  var SpotLightHelper = class extends Object3D {
    constructor(light, color) {
      super();
      this.light = light;
      this.matrix = light.matrixWorld;
      this.matrixAutoUpdate = false;
      this.color = color;
      this.type = "SpotLightHelper";
      const geometry = new BufferGeometry();
      const positions = [
        0,
        0,
        0,
        0,
        0,
        1,
        0,
        0,
        0,
        1,
        0,
        1,
        0,
        0,
        0,
        -1,
        0,
        1,
        0,
        0,
        0,
        0,
        1,
        1,
        0,
        0,
        0,
        0,
        -1,
        1
      ];
      for (let i = 0, j = 1, l = 32; i < l; i++, j++) {
        const p1 = i / l * Math.PI * 2;
        const p2 = j / l * Math.PI * 2;
        positions.push(
          Math.cos(p1),
          Math.sin(p1),
          1,
          Math.cos(p2),
          Math.sin(p2),
          1
        );
      }
      geometry.setAttribute("position", new Float32BufferAttribute(positions, 3));
      const material = new LineBasicMaterial({ fog: false, toneMapped: false });
      this.cone = new LineSegments(geometry, material);
      this.add(this.cone);
      this.update();
    }
    dispose() {
      this.cone.geometry.dispose();
      this.cone.material.dispose();
    }
    update() {
      this.light.updateWorldMatrix(true, false);
      this.light.target.updateWorldMatrix(true, false);
      const coneLength = this.light.distance ? this.light.distance : 1e3;
      const coneWidth = coneLength * Math.tan(this.light.angle);
      this.cone.scale.set(coneWidth, coneWidth, coneLength);
      _vector$3.setFromMatrixPosition(this.light.target.matrixWorld);
      this.cone.lookAt(_vector$3);
      if (this.color !== void 0) {
        this.cone.material.color.set(this.color);
      } else {
        this.cone.material.color.copy(this.light.color);
      }
    }
  };
  var _vector$2 = /* @__PURE__ */ new Vector3();
  var _boneMatrix = /* @__PURE__ */ new Matrix4();
  var _matrixWorldInv = /* @__PURE__ */ new Matrix4();
  var SkeletonHelper = class extends LineSegments {
    constructor(object) {
      const bones = getBoneList(object);
      const geometry = new BufferGeometry();
      const vertices = [];
      const colors = [];
      const color1 = new Color(0, 0, 1);
      const color2 = new Color(0, 1, 0);
      for (let i = 0; i < bones.length; i++) {
        const bone = bones[i];
        if (bone.parent && bone.parent.isBone) {
          vertices.push(0, 0, 0);
          vertices.push(0, 0, 0);
          colors.push(color1.r, color1.g, color1.b);
          colors.push(color2.r, color2.g, color2.b);
        }
      }
      geometry.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      geometry.setAttribute("color", new Float32BufferAttribute(colors, 3));
      const material = new LineBasicMaterial({ vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true });
      super(geometry, material);
      this.isSkeletonHelper = true;
      this.type = "SkeletonHelper";
      this.root = object;
      this.bones = bones;
      this.matrix = object.matrixWorld;
      this.matrixAutoUpdate = false;
    }
    updateMatrixWorld(force) {
      const bones = this.bones;
      const geometry = this.geometry;
      const position = geometry.getAttribute("position");
      _matrixWorldInv.copy(this.root.matrixWorld).invert();
      for (let i = 0, j = 0; i < bones.length; i++) {
        const bone = bones[i];
        if (bone.parent && bone.parent.isBone) {
          _boneMatrix.multiplyMatrices(_matrixWorldInv, bone.matrixWorld);
          _vector$2.setFromMatrixPosition(_boneMatrix);
          position.setXYZ(j, _vector$2.x, _vector$2.y, _vector$2.z);
          _boneMatrix.multiplyMatrices(_matrixWorldInv, bone.parent.matrixWorld);
          _vector$2.setFromMatrixPosition(_boneMatrix);
          position.setXYZ(j + 1, _vector$2.x, _vector$2.y, _vector$2.z);
          j += 2;
        }
      }
      geometry.getAttribute("position").needsUpdate = true;
      super.updateMatrixWorld(force);
    }
    dispose() {
      this.geometry.dispose();
      this.material.dispose();
    }
  };
  function getBoneList(object) {
    const boneList = [];
    if (object.isBone === true) {
      boneList.push(object);
    }
    for (let i = 0; i < object.children.length; i++) {
      boneList.push.apply(boneList, getBoneList(object.children[i]));
    }
    return boneList;
  }
  var PointLightHelper = class extends Mesh {
    constructor(light, sphereSize, color) {
      const geometry = new SphereGeometry(sphereSize, 4, 2);
      const material = new MeshBasicMaterial({ wireframe: true, fog: false, toneMapped: false });
      super(geometry, material);
      this.light = light;
      this.color = color;
      this.type = "PointLightHelper";
      this.matrix = this.light.matrixWorld;
      this.matrixAutoUpdate = false;
      this.update();
    }
    dispose() {
      this.geometry.dispose();
      this.material.dispose();
    }
    update() {
      this.light.updateWorldMatrix(true, false);
      if (this.color !== void 0) {
        this.material.color.set(this.color);
      } else {
        this.material.color.copy(this.light.color);
      }
    }
  };
  var _vector$1 = /* @__PURE__ */ new Vector3();
  var _color1 = /* @__PURE__ */ new Color();
  var _color2 = /* @__PURE__ */ new Color();
  var HemisphereLightHelper = class extends Object3D {
    constructor(light, size, color) {
      super();
      this.light = light;
      this.matrix = light.matrixWorld;
      this.matrixAutoUpdate = false;
      this.color = color;
      this.type = "HemisphereLightHelper";
      const geometry = new OctahedronGeometry(size);
      geometry.rotateY(Math.PI * 0.5);
      this.material = new MeshBasicMaterial({ wireframe: true, fog: false, toneMapped: false });
      if (this.color === void 0) this.material.vertexColors = true;
      const position = geometry.getAttribute("position");
      const colors = new Float32Array(position.count * 3);
      geometry.setAttribute("color", new BufferAttribute(colors, 3));
      this.add(new Mesh(geometry, this.material));
      this.update();
    }
    dispose() {
      this.children[0].geometry.dispose();
      this.children[0].material.dispose();
    }
    update() {
      const mesh = this.children[0];
      if (this.color !== void 0) {
        this.material.color.set(this.color);
      } else {
        const colors = mesh.geometry.getAttribute("color");
        _color1.copy(this.light.color);
        _color2.copy(this.light.groundColor);
        for (let i = 0, l = colors.count; i < l; i++) {
          const color = i < l / 2 ? _color1 : _color2;
          colors.setXYZ(i, color.r, color.g, color.b);
        }
        colors.needsUpdate = true;
      }
      this.light.updateWorldMatrix(true, false);
      mesh.lookAt(_vector$1.setFromMatrixPosition(this.light.matrixWorld).negate());
    }
  };
  var GridHelper = class extends LineSegments {
    constructor(size = 10, divisions = 10, color1 = 4473924, color2 = 8947848) {
      color1 = new Color(color1);
      color2 = new Color(color2);
      const center = divisions / 2;
      const step = size / divisions;
      const halfSize = size / 2;
      const vertices = [], colors = [];
      for (let i = 0, j = 0, k = -halfSize; i <= divisions; i++, k += step) {
        vertices.push(-halfSize, 0, k, halfSize, 0, k);
        vertices.push(k, 0, -halfSize, k, 0, halfSize);
        const color = i === center ? color1 : color2;
        color.toArray(colors, j);
        j += 3;
        color.toArray(colors, j);
        j += 3;
        color.toArray(colors, j);
        j += 3;
        color.toArray(colors, j);
        j += 3;
      }
      const geometry = new BufferGeometry();
      geometry.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      geometry.setAttribute("color", new Float32BufferAttribute(colors, 3));
      const material = new LineBasicMaterial({ vertexColors: true, toneMapped: false });
      super(geometry, material);
      this.type = "GridHelper";
    }
    dispose() {
      this.geometry.dispose();
      this.material.dispose();
    }
  };
  var PolarGridHelper = class extends LineSegments {
    constructor(radius = 10, sectors = 16, rings = 8, divisions = 64, color1 = 4473924, color2 = 8947848) {
      color1 = new Color(color1);
      color2 = new Color(color2);
      const vertices = [];
      const colors = [];
      if (sectors > 1) {
        for (let i = 0; i < sectors; i++) {
          const v = i / sectors * (Math.PI * 2);
          const x = Math.sin(v) * radius;
          const z = Math.cos(v) * radius;
          vertices.push(0, 0, 0);
          vertices.push(x, 0, z);
          const color = i & 1 ? color1 : color2;
          colors.push(color.r, color.g, color.b);
          colors.push(color.r, color.g, color.b);
        }
      }
      for (let i = 0; i < rings; i++) {
        const color = i & 1 ? color1 : color2;
        const r = radius - radius / rings * i;
        for (let j = 0; j < divisions; j++) {
          let v = j / divisions * (Math.PI * 2);
          let x = Math.sin(v) * r;
          let z = Math.cos(v) * r;
          vertices.push(x, 0, z);
          colors.push(color.r, color.g, color.b);
          v = (j + 1) / divisions * (Math.PI * 2);
          x = Math.sin(v) * r;
          z = Math.cos(v) * r;
          vertices.push(x, 0, z);
          colors.push(color.r, color.g, color.b);
        }
      }
      const geometry = new BufferGeometry();
      geometry.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      geometry.setAttribute("color", new Float32BufferAttribute(colors, 3));
      const material = new LineBasicMaterial({ vertexColors: true, toneMapped: false });
      super(geometry, material);
      this.type = "PolarGridHelper";
    }
    dispose() {
      this.geometry.dispose();
      this.material.dispose();
    }
  };
  var _v1 = /* @__PURE__ */ new Vector3();
  var _v2 = /* @__PURE__ */ new Vector3();
  var _v3 = /* @__PURE__ */ new Vector3();
  var DirectionalLightHelper = class extends Object3D {
    constructor(light, size, color) {
      super();
      this.light = light;
      this.matrix = light.matrixWorld;
      this.matrixAutoUpdate = false;
      this.color = color;
      this.type = "DirectionalLightHelper";
      if (size === void 0) size = 1;
      let geometry = new BufferGeometry();
      geometry.setAttribute("position", new Float32BufferAttribute([
        -size,
        size,
        0,
        size,
        size,
        0,
        size,
        -size,
        0,
        -size,
        -size,
        0,
        -size,
        size,
        0
      ], 3));
      const material = new LineBasicMaterial({ fog: false, toneMapped: false });
      this.lightPlane = new Line(geometry, material);
      this.add(this.lightPlane);
      geometry = new BufferGeometry();
      geometry.setAttribute("position", new Float32BufferAttribute([0, 0, 0, 0, 0, 1], 3));
      this.targetLine = new Line(geometry, material);
      this.add(this.targetLine);
      this.update();
    }
    dispose() {
      this.lightPlane.geometry.dispose();
      this.lightPlane.material.dispose();
      this.targetLine.geometry.dispose();
      this.targetLine.material.dispose();
    }
    update() {
      this.light.updateWorldMatrix(true, false);
      this.light.target.updateWorldMatrix(true, false);
      _v1.setFromMatrixPosition(this.light.matrixWorld);
      _v2.setFromMatrixPosition(this.light.target.matrixWorld);
      _v3.subVectors(_v2, _v1);
      this.lightPlane.lookAt(_v2);
      if (this.color !== void 0) {
        this.lightPlane.material.color.set(this.color);
        this.targetLine.material.color.set(this.color);
      } else {
        this.lightPlane.material.color.copy(this.light.color);
        this.targetLine.material.color.copy(this.light.color);
      }
      this.targetLine.lookAt(_v2);
      this.targetLine.scale.z = _v3.length();
    }
  };
  var _vector = /* @__PURE__ */ new Vector3();
  var _camera = /* @__PURE__ */ new Camera();
  var CameraHelper = class extends LineSegments {
    constructor(camera) {
      const geometry = new BufferGeometry();
      const material = new LineBasicMaterial({ color: 16777215, vertexColors: true, toneMapped: false });
      const vertices = [];
      const colors = [];
      const pointMap = {};
      addLine("n1", "n2");
      addLine("n2", "n4");
      addLine("n4", "n3");
      addLine("n3", "n1");
      addLine("f1", "f2");
      addLine("f2", "f4");
      addLine("f4", "f3");
      addLine("f3", "f1");
      addLine("n1", "f1");
      addLine("n2", "f2");
      addLine("n3", "f3");
      addLine("n4", "f4");
      addLine("p", "n1");
      addLine("p", "n2");
      addLine("p", "n3");
      addLine("p", "n4");
      addLine("u1", "u2");
      addLine("u2", "u3");
      addLine("u3", "u1");
      addLine("c", "t");
      addLine("p", "c");
      addLine("cn1", "cn2");
      addLine("cn3", "cn4");
      addLine("cf1", "cf2");
      addLine("cf3", "cf4");
      function addLine(a, b) {
        addPoint(a);
        addPoint(b);
      }
      function addPoint(id) {
        vertices.push(0, 0, 0);
        colors.push(0, 0, 0);
        if (pointMap[id] === void 0) {
          pointMap[id] = [];
        }
        pointMap[id].push(vertices.length / 3 - 1);
      }
      geometry.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      geometry.setAttribute("color", new Float32BufferAttribute(colors, 3));
      super(geometry, material);
      this.type = "CameraHelper";
      this.camera = camera;
      if (this.camera.updateProjectionMatrix) this.camera.updateProjectionMatrix();
      this.matrix = camera.matrixWorld;
      this.matrixAutoUpdate = false;
      this.pointMap = pointMap;
      this.update();
      const colorFrustum = new Color(16755200);
      const colorCone = new Color(16711680);
      const colorUp = new Color(43775);
      const colorTarget = new Color(16777215);
      const colorCross = new Color(3355443);
      this.setColors(colorFrustum, colorCone, colorUp, colorTarget, colorCross);
    }
    setColors(frustum, cone, up, target, cross) {
      const geometry = this.geometry;
      const colorAttribute = geometry.getAttribute("color");
      colorAttribute.setXYZ(0, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(1, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(2, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(3, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(4, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(5, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(6, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(7, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(8, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(9, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(10, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(11, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(12, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(13, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(14, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(15, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(16, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(17, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(18, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(19, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(20, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(21, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(22, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(23, frustum.r, frustum.g, frustum.b);
      colorAttribute.setXYZ(24, cone.r, cone.g, cone.b);
      colorAttribute.setXYZ(25, cone.r, cone.g, cone.b);
      colorAttribute.setXYZ(26, cone.r, cone.g, cone.b);
      colorAttribute.setXYZ(27, cone.r, cone.g, cone.b);
      colorAttribute.setXYZ(28, cone.r, cone.g, cone.b);
      colorAttribute.setXYZ(29, cone.r, cone.g, cone.b);
      colorAttribute.setXYZ(30, cone.r, cone.g, cone.b);
      colorAttribute.setXYZ(31, cone.r, cone.g, cone.b);
      colorAttribute.setXYZ(32, up.r, up.g, up.b);
      colorAttribute.setXYZ(33, up.r, up.g, up.b);
      colorAttribute.setXYZ(34, up.r, up.g, up.b);
      colorAttribute.setXYZ(35, up.r, up.g, up.b);
      colorAttribute.setXYZ(36, up.r, up.g, up.b);
      colorAttribute.setXYZ(37, up.r, up.g, up.b);
      colorAttribute.setXYZ(38, target.r, target.g, target.b);
      colorAttribute.setXYZ(39, target.r, target.g, target.b);
      colorAttribute.setXYZ(40, cross.r, cross.g, cross.b);
      colorAttribute.setXYZ(41, cross.r, cross.g, cross.b);
      colorAttribute.setXYZ(42, cross.r, cross.g, cross.b);
      colorAttribute.setXYZ(43, cross.r, cross.g, cross.b);
      colorAttribute.setXYZ(44, cross.r, cross.g, cross.b);
      colorAttribute.setXYZ(45, cross.r, cross.g, cross.b);
      colorAttribute.setXYZ(46, cross.r, cross.g, cross.b);
      colorAttribute.setXYZ(47, cross.r, cross.g, cross.b);
      colorAttribute.setXYZ(48, cross.r, cross.g, cross.b);
      colorAttribute.setXYZ(49, cross.r, cross.g, cross.b);
      colorAttribute.needsUpdate = true;
    }
    update() {
      const geometry = this.geometry;
      const pointMap = this.pointMap;
      const w = 1, h = 1;
      _camera.projectionMatrixInverse.copy(this.camera.projectionMatrixInverse);
      setPoint("c", pointMap, geometry, _camera, 0, 0, -1);
      setPoint("t", pointMap, geometry, _camera, 0, 0, 1);
      setPoint("n1", pointMap, geometry, _camera, -w, -h, -1);
      setPoint("n2", pointMap, geometry, _camera, w, -h, -1);
      setPoint("n3", pointMap, geometry, _camera, -w, h, -1);
      setPoint("n4", pointMap, geometry, _camera, w, h, -1);
      setPoint("f1", pointMap, geometry, _camera, -w, -h, 1);
      setPoint("f2", pointMap, geometry, _camera, w, -h, 1);
      setPoint("f3", pointMap, geometry, _camera, -w, h, 1);
      setPoint("f4", pointMap, geometry, _camera, w, h, 1);
      setPoint("u1", pointMap, geometry, _camera, w * 0.7, h * 1.1, -1);
      setPoint("u2", pointMap, geometry, _camera, -w * 0.7, h * 1.1, -1);
      setPoint("u3", pointMap, geometry, _camera, 0, h * 2, -1);
      setPoint("cf1", pointMap, geometry, _camera, -w, 0, 1);
      setPoint("cf2", pointMap, geometry, _camera, w, 0, 1);
      setPoint("cf3", pointMap, geometry, _camera, 0, -h, 1);
      setPoint("cf4", pointMap, geometry, _camera, 0, h, 1);
      setPoint("cn1", pointMap, geometry, _camera, -w, 0, -1);
      setPoint("cn2", pointMap, geometry, _camera, w, 0, -1);
      setPoint("cn3", pointMap, geometry, _camera, 0, -h, -1);
      setPoint("cn4", pointMap, geometry, _camera, 0, h, -1);
      geometry.getAttribute("position").needsUpdate = true;
    }
    dispose() {
      this.geometry.dispose();
      this.material.dispose();
    }
  };
  function setPoint(point, pointMap, geometry, camera, x, y, z) {
    _vector.set(x, y, z).unproject(camera);
    const points = pointMap[point];
    if (points !== void 0) {
      const position = geometry.getAttribute("position");
      for (let i = 0, l = points.length; i < l; i++) {
        position.setXYZ(points[i], _vector.x, _vector.y, _vector.z);
      }
    }
  }
  var _box = /* @__PURE__ */ new Box3();
  var BoxHelper = class extends LineSegments {
    constructor(object, color = 16776960) {
      const indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
      const positions = new Float32Array(8 * 3);
      const geometry = new BufferGeometry();
      geometry.setIndex(new BufferAttribute(indices, 1));
      geometry.setAttribute("position", new BufferAttribute(positions, 3));
      super(geometry, new LineBasicMaterial({ color, toneMapped: false }));
      this.object = object;
      this.type = "BoxHelper";
      this.matrixAutoUpdate = false;
      this.update();
    }
    update(object) {
      if (object !== void 0) {
        console.warn("THREE.BoxHelper: .update() has no longer arguments.");
      }
      if (this.object !== void 0) {
        _box.setFromObject(this.object);
      }
      if (_box.isEmpty()) return;
      const min = _box.min;
      const max2 = _box.max;
      const position = this.geometry.attributes.position;
      const array = position.array;
      array[0] = max2.x;
      array[1] = max2.y;
      array[2] = max2.z;
      array[3] = min.x;
      array[4] = max2.y;
      array[5] = max2.z;
      array[6] = min.x;
      array[7] = min.y;
      array[8] = max2.z;
      array[9] = max2.x;
      array[10] = min.y;
      array[11] = max2.z;
      array[12] = max2.x;
      array[13] = max2.y;
      array[14] = min.z;
      array[15] = min.x;
      array[16] = max2.y;
      array[17] = min.z;
      array[18] = min.x;
      array[19] = min.y;
      array[20] = min.z;
      array[21] = max2.x;
      array[22] = min.y;
      array[23] = min.z;
      position.needsUpdate = true;
      this.geometry.computeBoundingSphere();
    }
    setFromObject(object) {
      this.object = object;
      this.update();
      return this;
    }
    copy(source, recursive) {
      super.copy(source, recursive);
      this.object = source.object;
      return this;
    }
    dispose() {
      this.geometry.dispose();
      this.material.dispose();
    }
  };
  var Box3Helper = class extends LineSegments {
    constructor(box, color = 16776960) {
      const indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
      const positions = [1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1, 1, -1, -1, 1, -1, -1, -1, -1, 1, -1, -1];
      const geometry = new BufferGeometry();
      geometry.setIndex(new BufferAttribute(indices, 1));
      geometry.setAttribute("position", new Float32BufferAttribute(positions, 3));
      super(geometry, new LineBasicMaterial({ color, toneMapped: false }));
      this.box = box;
      this.type = "Box3Helper";
      this.geometry.computeBoundingSphere();
    }
    updateMatrixWorld(force) {
      const box = this.box;
      if (box.isEmpty()) return;
      box.getCenter(this.position);
      box.getSize(this.scale);
      this.scale.multiplyScalar(0.5);
      super.updateMatrixWorld(force);
    }
    dispose() {
      this.geometry.dispose();
      this.material.dispose();
    }
  };
  var PlaneHelper = class extends Line {
    constructor(plane, size = 1, hex = 16776960) {
      const color = hex;
      const positions = [1, -1, 0, -1, 1, 0, -1, -1, 0, 1, 1, 0, -1, 1, 0, -1, -1, 0, 1, -1, 0, 1, 1, 0];
      const geometry = new BufferGeometry();
      geometry.setAttribute("position", new Float32BufferAttribute(positions, 3));
      geometry.computeBoundingSphere();
      super(geometry, new LineBasicMaterial({ color, toneMapped: false }));
      this.type = "PlaneHelper";
      this.plane = plane;
      this.size = size;
      const positions2 = [1, 1, 0, -1, 1, 0, -1, -1, 0, 1, 1, 0, -1, -1, 0, 1, -1, 0];
      const geometry2 = new BufferGeometry();
      geometry2.setAttribute("position", new Float32BufferAttribute(positions2, 3));
      geometry2.computeBoundingSphere();
      this.add(new Mesh(geometry2, new MeshBasicMaterial({ color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false })));
    }
    updateMatrixWorld(force) {
      this.position.set(0, 0, 0);
      this.scale.set(0.5 * this.size, 0.5 * this.size, 1);
      this.lookAt(this.plane.normal);
      this.translateZ(-this.plane.constant);
      super.updateMatrixWorld(force);
    }
    dispose() {
      this.geometry.dispose();
      this.material.dispose();
      this.children[0].geometry.dispose();
      this.children[0].material.dispose();
    }
  };
  var _axis = /* @__PURE__ */ new Vector3();
  var _lineGeometry;
  var _coneGeometry;
  var ArrowHelper = class extends Object3D {
    // dir is assumed to be normalized
    constructor(dir = new Vector3(0, 0, 1), origin = new Vector3(0, 0, 0), length = 1, color = 16776960, headLength = length * 0.2, headWidth = headLength * 0.2) {
      super();
      this.type = "ArrowHelper";
      if (_lineGeometry === void 0) {
        _lineGeometry = new BufferGeometry();
        _lineGeometry.setAttribute("position", new Float32BufferAttribute([0, 0, 0, 0, 1, 0], 3));
        _coneGeometry = new CylinderGeometry(0, 0.5, 1, 5, 1);
        _coneGeometry.translate(0, -0.5, 0);
      }
      this.position.copy(origin);
      this.line = new Line(_lineGeometry, new LineBasicMaterial({ color, toneMapped: false }));
      this.line.matrixAutoUpdate = false;
      this.add(this.line);
      this.cone = new Mesh(_coneGeometry, new MeshBasicMaterial({ color, toneMapped: false }));
      this.cone.matrixAutoUpdate = false;
      this.add(this.cone);
      this.setDirection(dir);
      this.setLength(length, headLength, headWidth);
    }
    setDirection(dir) {
      if (dir.y > 0.99999) {
        this.quaternion.set(0, 0, 0, 1);
      } else if (dir.y < -0.99999) {
        this.quaternion.set(1, 0, 0, 0);
      } else {
        _axis.set(dir.z, 0, -dir.x).normalize();
        const radians = Math.acos(dir.y);
        this.quaternion.setFromAxisAngle(_axis, radians);
      }
    }
    setLength(length, headLength = length * 0.2, headWidth = headLength * 0.2) {
      this.line.scale.set(1, Math.max(1e-4, length - headLength), 1);
      this.line.updateMatrix();
      this.cone.scale.set(headWidth, headLength, headWidth);
      this.cone.position.y = length;
      this.cone.updateMatrix();
    }
    setColor(color) {
      this.line.material.color.set(color);
      this.cone.material.color.set(color);
    }
    copy(source) {
      super.copy(source, false);
      this.line.copy(source.line);
      this.cone.copy(source.cone);
      return this;
    }
    dispose() {
      this.line.geometry.dispose();
      this.line.material.dispose();
      this.cone.geometry.dispose();
      this.cone.material.dispose();
    }
  };
  var AxesHelper = class extends LineSegments {
    constructor(size = 1) {
      const vertices = [
        0,
        0,
        0,
        size,
        0,
        0,
        0,
        0,
        0,
        0,
        size,
        0,
        0,
        0,
        0,
        0,
        0,
        size
      ];
      const colors = [
        1,
        0,
        0,
        1,
        0.6,
        0,
        0,
        1,
        0,
        0.6,
        1,
        0,
        0,
        0,
        1,
        0,
        0.6,
        1
      ];
      const geometry = new BufferGeometry();
      geometry.setAttribute("position", new Float32BufferAttribute(vertices, 3));
      geometry.setAttribute("color", new Float32BufferAttribute(colors, 3));
      const material = new LineBasicMaterial({ vertexColors: true, toneMapped: false });
      super(geometry, material);
      this.type = "AxesHelper";
    }
    setColors(xAxisColor, yAxisColor, zAxisColor) {
      const color = new Color();
      const array = this.geometry.attributes.color.array;
      color.set(xAxisColor);
      color.toArray(array, 0);
      color.toArray(array, 3);
      color.set(yAxisColor);
      color.toArray(array, 6);
      color.toArray(array, 9);
      color.set(zAxisColor);
      color.toArray(array, 12);
      color.toArray(array, 15);
      this.geometry.attributes.color.needsUpdate = true;
      return this;
    }
    dispose() {
      this.geometry.dispose();
      this.material.dispose();
    }
  };
  var ShapePath = class {
    constructor() {
      this.type = "ShapePath";
      this.color = new Color();
      this.subPaths = [];
      this.currentPath = null;
    }
    moveTo(x, y) {
      this.currentPath = new Path();
      this.subPaths.push(this.currentPath);
      this.currentPath.moveTo(x, y);
      return this;
    }
    lineTo(x, y) {
      this.currentPath.lineTo(x, y);
      return this;
    }
    quadraticCurveTo(aCPx, aCPy, aX, aY) {
      this.currentPath.quadraticCurveTo(aCPx, aCPy, aX, aY);
      return this;
    }
    bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY) {
      this.currentPath.bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY);
      return this;
    }
    splineThru(pts) {
      this.currentPath.splineThru(pts);
      return this;
    }
    toShapes(isCCW) {
      function toShapesNoHoles(inSubpaths) {
        const shapes2 = [];
        for (let i = 0, l = inSubpaths.length; i < l; i++) {
          const tmpPath2 = inSubpaths[i];
          const tmpShape2 = new Shape();
          tmpShape2.curves = tmpPath2.curves;
          shapes2.push(tmpShape2);
        }
        return shapes2;
      }
      function isPointInsidePolygon(inPt, inPolygon) {
        const polyLen = inPolygon.length;
        let inside = false;
        for (let p = polyLen - 1, q = 0; q < polyLen; p = q++) {
          let edgeLowPt = inPolygon[p];
          let edgeHighPt = inPolygon[q];
          let edgeDx = edgeHighPt.x - edgeLowPt.x;
          let edgeDy = edgeHighPt.y - edgeLowPt.y;
          if (Math.abs(edgeDy) > Number.EPSILON) {
            if (edgeDy < 0) {
              edgeLowPt = inPolygon[q];
              edgeDx = -edgeDx;
              edgeHighPt = inPolygon[p];
              edgeDy = -edgeDy;
            }
            if (inPt.y < edgeLowPt.y || inPt.y > edgeHighPt.y) continue;
            if (inPt.y === edgeLowPt.y) {
              if (inPt.x === edgeLowPt.x) return true;
            } else {
              const perpEdge = edgeDy * (inPt.x - edgeLowPt.x) - edgeDx * (inPt.y - edgeLowPt.y);
              if (perpEdge === 0) return true;
              if (perpEdge < 0) continue;
              inside = !inside;
            }
          } else {
            if (inPt.y !== edgeLowPt.y) continue;
            if (edgeHighPt.x <= inPt.x && inPt.x <= edgeLowPt.x || edgeLowPt.x <= inPt.x && inPt.x <= edgeHighPt.x) return true;
          }
        }
        return inside;
      }
      const isClockWise = ShapeUtils.isClockWise;
      const subPaths = this.subPaths;
      if (subPaths.length === 0) return [];
      let solid, tmpPath, tmpShape;
      const shapes = [];
      if (subPaths.length === 1) {
        tmpPath = subPaths[0];
        tmpShape = new Shape();
        tmpShape.curves = tmpPath.curves;
        shapes.push(tmpShape);
        return shapes;
      }
      let holesFirst = !isClockWise(subPaths[0].getPoints());
      holesFirst = isCCW ? !holesFirst : holesFirst;
      const betterShapeHoles = [];
      const newShapes = [];
      let newShapeHoles = [];
      let mainIdx = 0;
      let tmpPoints;
      newShapes[mainIdx] = void 0;
      newShapeHoles[mainIdx] = [];
      for (let i = 0, l = subPaths.length; i < l; i++) {
        tmpPath = subPaths[i];
        tmpPoints = tmpPath.getPoints();
        solid = isClockWise(tmpPoints);
        solid = isCCW ? !solid : solid;
        if (solid) {
          if (!holesFirst && newShapes[mainIdx]) mainIdx++;
          newShapes[mainIdx] = { s: new Shape(), p: tmpPoints };
          newShapes[mainIdx].s.curves = tmpPath.curves;
          if (holesFirst) mainIdx++;
          newShapeHoles[mainIdx] = [];
        } else {
          newShapeHoles[mainIdx].push({ h: tmpPath, p: tmpPoints[0] });
        }
      }
      if (!newShapes[0]) return toShapesNoHoles(subPaths);
      if (newShapes.length > 1) {
        let ambiguous = false;
        let toChange = 0;
        for (let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx++) {
          betterShapeHoles[sIdx] = [];
        }
        for (let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx++) {
          const sho = newShapeHoles[sIdx];
          for (let hIdx = 0; hIdx < sho.length; hIdx++) {
            const ho = sho[hIdx];
            let hole_unassigned = true;
            for (let s2Idx = 0; s2Idx < newShapes.length; s2Idx++) {
              if (isPointInsidePolygon(ho.p, newShapes[s2Idx].p)) {
                if (sIdx !== s2Idx) toChange++;
                if (hole_unassigned) {
                  hole_unassigned = false;
                  betterShapeHoles[s2Idx].push(ho);
                } else {
                  ambiguous = true;
                }
              }
            }
            if (hole_unassigned) {
              betterShapeHoles[sIdx].push(ho);
            }
          }
        }
        if (toChange > 0 && ambiguous === false) {
          newShapeHoles = betterShapeHoles;
        }
      }
      let tmpHoles;
      for (let i = 0, il = newShapes.length; i < il; i++) {
        tmpShape = newShapes[i].s;
        shapes.push(tmpShape);
        tmpHoles = newShapeHoles[i];
        for (let j = 0, jl = tmpHoles.length; j < jl; j++) {
          tmpShape.holes.push(tmpHoles[j].h);
        }
      }
      return shapes;
    }
  };
  if (typeof __THREE_DEVTOOLS__ !== "undefined") {
    __THREE_DEVTOOLS__.dispatchEvent(new CustomEvent("register", { detail: {
      revision: REVISION
    } }));
  }
  if (typeof window !== "undefined") {
    if (window.__THREE__) {
      console.warn("WARNING: Multiple instances of Three.js being imported.");
    } else {
      window.__THREE__ = REVISION;
    }
  }

  // examples/jsm/controls/OrbitControls.js
  var _changeEvent = { type: "change" };
  var _startEvent = { type: "start" };
  var _endEvent = { type: "end" };
  var _ray2 = new Ray();
  var _plane = new Plane();
  var TILT_LIMIT = Math.cos(70 * MathUtils.DEG2RAD);
  var OrbitControls = class extends EventDispatcher {
    constructor(object, domElement) {
      super();
      this.object = object;
      this.domElement = domElement;
      this.domElement.style.touchAction = "none";
      this.enabled = true;
      this.target = new Vector3();
      this.cursor = new Vector3();
      this.minDistance = 0;
      this.maxDistance = Infinity;
      this.minZoom = 0;
      this.maxZoom = Infinity;
      this.minTargetRadius = 0;
      this.maxTargetRadius = Infinity;
      this.minPolarAngle = 0;
      this.maxPolarAngle = Math.PI;
      this.minAzimuthAngle = -Infinity;
      this.maxAzimuthAngle = Infinity;
      this.enableDamping = false;
      this.dampingFactor = 0.05;
      this.enableZoom = true;
      this.zoomSpeed = 1;
      this.enableRotate = true;
      this.rotateSpeed = 1;
      this.enablePan = true;
      this.panSpeed = 1;
      this.screenSpacePanning = true;
      this.keyPanSpeed = 7;
      this.zoomToCursor = false;
      this.autoRotate = false;
      this.autoRotateSpeed = 2;
      this.keys = { LEFT: "ArrowLeft", UP: "ArrowUp", RIGHT: "ArrowRight", BOTTOM: "ArrowDown" };
      this.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN };
      this.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN };
      this.target0 = this.target.clone();
      this.position0 = this.object.position.clone();
      this.zoom0 = this.object.zoom;
      this._domElementKeyEvents = null;
      this.getPolarAngle = function() {
        return spherical.phi;
      };
      this.getAzimuthalAngle = function() {
        return spherical.theta;
      };
      this.getDistance = function() {
        return this.object.position.distanceTo(this.target);
      };
      this.listenToKeyEvents = function(domElement2) {
        domElement2.addEventListener("keydown", onKeyDown);
        this._domElementKeyEvents = domElement2;
      };
      this.stopListenToKeyEvents = function() {
        this._domElementKeyEvents.removeEventListener("keydown", onKeyDown);
        this._domElementKeyEvents = null;
      };
      this.saveState = function() {
        scope.target0.copy(scope.target);
        scope.position0.copy(scope.object.position);
        scope.zoom0 = scope.object.zoom;
      };
      this.reset = function() {
        scope.target.copy(scope.target0);
        scope.object.position.copy(scope.position0);
        scope.object.zoom = scope.zoom0;
        scope.object.updateProjectionMatrix();
        scope.dispatchEvent(_changeEvent);
        scope.update();
        state = STATE.NONE;
      };
      this.update = (function() {
        const offset = new Vector3();
        const quat = new Quaternion().setFromUnitVectors(object.up, new Vector3(0, 1, 0));
        const quatInverse = quat.clone().invert();
        const lastPosition = new Vector3();
        const lastQuaternion = new Quaternion();
        const lastTargetPosition = new Vector3();
        const twoPI = 2 * Math.PI;
        return function update(deltaTime = null) {
          const position = scope.object.position;
          offset.copy(position).sub(scope.target);
          offset.applyQuaternion(quat);
          spherical.setFromVector3(offset);
          if (scope.autoRotate && state === STATE.NONE) {
            rotateLeft(getAutoRotationAngle(deltaTime));
          }
          if (scope.enableDamping) {
            spherical.theta += sphericalDelta.theta * scope.dampingFactor;
            spherical.phi += sphericalDelta.phi * scope.dampingFactor;
          } else {
            spherical.theta += sphericalDelta.theta;
            spherical.phi += sphericalDelta.phi;
          }
          let min = scope.minAzimuthAngle;
          let max2 = scope.maxAzimuthAngle;
          if (isFinite(min) && isFinite(max2)) {
            if (min < -Math.PI) min += twoPI;
            else if (min > Math.PI) min -= twoPI;
            if (max2 < -Math.PI) max2 += twoPI;
            else if (max2 > Math.PI) max2 -= twoPI;
            if (min <= max2) {
              spherical.theta = Math.max(min, Math.min(max2, spherical.theta));
            } else {
              spherical.theta = spherical.theta > (min + max2) / 2 ? Math.max(min, spherical.theta) : Math.min(max2, spherical.theta);
            }
          }
          spherical.phi = Math.max(scope.minPolarAngle, Math.min(scope.maxPolarAngle, spherical.phi));
          spherical.makeSafe();
          if (scope.enableDamping === true) {
            scope.target.addScaledVector(panOffset, scope.dampingFactor);
          } else {
            scope.target.add(panOffset);
          }
          scope.target.sub(scope.cursor);
          scope.target.clampLength(scope.minTargetRadius, scope.maxTargetRadius);
          scope.target.add(scope.cursor);
          if (scope.zoomToCursor && performCursorZoom || scope.object.isOrthographicCamera) {
            spherical.radius = clampDistance(spherical.radius);
          } else {
            spherical.radius = clampDistance(spherical.radius * scale);
          }
          offset.setFromSpherical(spherical);
          offset.applyQuaternion(quatInverse);
          position.copy(scope.target).add(offset);
          scope.object.lookAt(scope.target);
          if (scope.enableDamping === true) {
            sphericalDelta.theta *= 1 - scope.dampingFactor;
            sphericalDelta.phi *= 1 - scope.dampingFactor;
            panOffset.multiplyScalar(1 - scope.dampingFactor);
          } else {
            sphericalDelta.set(0, 0, 0);
            panOffset.set(0, 0, 0);
          }
          let zoomChanged = false;
          if (scope.zoomToCursor && performCursorZoom) {
            let newRadius = null;
            if (scope.object.isPerspectiveCamera) {
              const prevRadius = offset.length();
              newRadius = clampDistance(prevRadius * scale);
              const radiusDelta = prevRadius - newRadius;
              scope.object.position.addScaledVector(dollyDirection, radiusDelta);
              scope.object.updateMatrixWorld();
            } else if (scope.object.isOrthographicCamera) {
              const mouseBefore = new Vector3(mouse.x, mouse.y, 0);
              mouseBefore.unproject(scope.object);
              scope.object.zoom = Math.max(scope.minZoom, Math.min(scope.maxZoom, scope.object.zoom / scale));
              scope.object.updateProjectionMatrix();
              zoomChanged = true;
              const mouseAfter = new Vector3(mouse.x, mouse.y, 0);
              mouseAfter.unproject(scope.object);
              scope.object.position.sub(mouseAfter).add(mouseBefore);
              scope.object.updateMatrixWorld();
              newRadius = offset.length();
            } else {
              console.warn("WARNING: OrbitControls.js encountered an unknown camera type - zoom to cursor disabled.");
              scope.zoomToCursor = false;
            }
            if (newRadius !== null) {
              if (this.screenSpacePanning) {
                scope.target.set(0, 0, -1).transformDirection(scope.object.matrix).multiplyScalar(newRadius).add(scope.object.position);
              } else {
                _ray2.origin.copy(scope.object.position);
                _ray2.direction.set(0, 0, -1).transformDirection(scope.object.matrix);
                if (Math.abs(scope.object.up.dot(_ray2.direction)) < TILT_LIMIT) {
                  object.lookAt(scope.target);
                } else {
                  _plane.setFromNormalAndCoplanarPoint(scope.object.up, scope.target);
                  _ray2.intersectPlane(_plane, scope.target);
                }
              }
            }
          } else if (scope.object.isOrthographicCamera) {
            scope.object.zoom = Math.max(scope.minZoom, Math.min(scope.maxZoom, scope.object.zoom / scale));
            scope.object.updateProjectionMatrix();
            zoomChanged = true;
          }
          scale = 1;
          performCursorZoom = false;
          if (zoomChanged || lastPosition.distanceToSquared(scope.object.position) > EPS || 8 * (1 - lastQuaternion.dot(scope.object.quaternion)) > EPS || lastTargetPosition.distanceToSquared(scope.target) > 0) {
            scope.dispatchEvent(_changeEvent);
            lastPosition.copy(scope.object.position);
            lastQuaternion.copy(scope.object.quaternion);
            lastTargetPosition.copy(scope.target);
            return true;
          }
          return false;
        };
      })();
      this.dispose = function() {
        scope.domElement.removeEventListener("contextmenu", onContextMenu);
        scope.domElement.removeEventListener("pointerdown", onPointerDown2);
        scope.domElement.removeEventListener("pointercancel", onPointerUp2);
        scope.domElement.removeEventListener("wheel", onMouseWheel);
        scope.domElement.removeEventListener("pointermove", onPointerMove2);
        scope.domElement.removeEventListener("pointerup", onPointerUp2);
        if (scope._domElementKeyEvents !== null) {
          scope._domElementKeyEvents.removeEventListener("keydown", onKeyDown);
          scope._domElementKeyEvents = null;
        }
      };
      const scope = this;
      const STATE = {
        NONE: -1,
        ROTATE: 0,
        DOLLY: 1,
        PAN: 2,
        TOUCH_ROTATE: 3,
        TOUCH_PAN: 4,
        TOUCH_DOLLY_PAN: 5,
        TOUCH_DOLLY_ROTATE: 6
      };
      let state = STATE.NONE;
      const EPS = 1e-6;
      const spherical = new Spherical();
      const sphericalDelta = new Spherical();
      let scale = 1;
      const panOffset = new Vector3();
      const rotateStart = new Vector2();
      const rotateEnd = new Vector2();
      const rotateDelta = new Vector2();
      const panStart = new Vector2();
      const panEnd = new Vector2();
      const panDelta = new Vector2();
      const dollyStart = new Vector2();
      const dollyEnd = new Vector2();
      const dollyDelta = new Vector2();
      const dollyDirection = new Vector3();
      const mouse = new Vector2();
      let performCursorZoom = false;
      const pointers = [];
      const pointerPositions = {};
      function getAutoRotationAngle(deltaTime) {
        if (deltaTime !== null) {
          return 2 * Math.PI / 60 * scope.autoRotateSpeed * deltaTime;
        } else {
          return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
        }
      }
      function getZoomScale(delta) {
        const normalized_delta = Math.abs(delta) / (100 * (window.devicePixelRatio | 0));
        return Math.pow(0.95, scope.zoomSpeed * normalized_delta);
      }
      function rotateLeft(angle) {
        sphericalDelta.theta -= angle;
      }
      function rotateUp(angle) {
        sphericalDelta.phi -= angle;
      }
      const panLeft = (function() {
        const v = new Vector3();
        return function panLeft2(distance, objectMatrix) {
          v.setFromMatrixColumn(objectMatrix, 0);
          v.multiplyScalar(-distance);
          panOffset.add(v);
        };
      })();
      const panUp = (function() {
        const v = new Vector3();
        return function panUp2(distance, objectMatrix) {
          if (scope.screenSpacePanning === true) {
            v.setFromMatrixColumn(objectMatrix, 1);
          } else {
            v.setFromMatrixColumn(objectMatrix, 0);
            v.crossVectors(scope.object.up, v);
          }
          v.multiplyScalar(distance);
          panOffset.add(v);
        };
      })();
      const pan = (function() {
        const offset = new Vector3();
        return function pan2(deltaX, deltaY) {
          const element = scope.domElement;
          if (scope.object.isPerspectiveCamera) {
            const position = scope.object.position;
            offset.copy(position).sub(scope.target);
            let targetDistance = offset.length();
            targetDistance *= Math.tan(scope.object.fov / 2 * Math.PI / 180);
            panLeft(2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix);
            panUp(2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix);
          } else if (scope.object.isOrthographicCamera) {
            panLeft(deltaX * (scope.object.right - scope.object.left) / scope.object.zoom / element.clientWidth, scope.object.matrix);
            panUp(deltaY * (scope.object.top - scope.object.bottom) / scope.object.zoom / element.clientHeight, scope.object.matrix);
          } else {
            console.warn("WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.");
            scope.enablePan = false;
          }
        };
      })();
      function dollyOut(dollyScale) {
        if (scope.object.isPerspectiveCamera || scope.object.isOrthographicCamera) {
          scale /= dollyScale;
        } else {
          console.warn("WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.");
          scope.enableZoom = false;
        }
      }
      function dollyIn(dollyScale) {
        if (scope.object.isPerspectiveCamera || scope.object.isOrthographicCamera) {
          scale *= dollyScale;
        } else {
          console.warn("WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.");
          scope.enableZoom = false;
        }
      }
      function updateZoomParameters(x, y) {
        if (!scope.zoomToCursor) {
          return;
        }
        performCursorZoom = true;
        const rect = scope.domElement.getBoundingClientRect();
        const dx = x - rect.left;
        const dy = y - rect.top;
        const w = rect.width;
        const h = rect.height;
        mouse.x = dx / w * 2 - 1;
        mouse.y = -(dy / h) * 2 + 1;
        dollyDirection.set(mouse.x, mouse.y, 1).unproject(scope.object).sub(scope.object.position).normalize();
      }
      function clampDistance(dist) {
        return Math.max(scope.minDistance, Math.min(scope.maxDistance, dist));
      }
      function handleMouseDownRotate(event) {
        rotateStart.set(event.clientX, event.clientY);
      }
      function handleMouseDownDolly(event) {
        updateZoomParameters(event.clientX, event.clientX);
        dollyStart.set(event.clientX, event.clientY);
      }
      function handleMouseDownPan(event) {
        panStart.set(event.clientX, event.clientY);
      }
      function handleMouseMoveRotate(event) {
        rotateEnd.set(event.clientX, event.clientY);
        rotateDelta.subVectors(rotateEnd, rotateStart).multiplyScalar(scope.rotateSpeed);
        const element = scope.domElement;
        rotateLeft(2 * Math.PI * rotateDelta.x / element.clientHeight);
        rotateUp(2 * Math.PI * rotateDelta.y / element.clientHeight);
        rotateStart.copy(rotateEnd);
        scope.update();
      }
      function handleMouseMoveDolly(event) {
        dollyEnd.set(event.clientX, event.clientY);
        dollyDelta.subVectors(dollyEnd, dollyStart);
        if (dollyDelta.y > 0) {
          dollyOut(getZoomScale(dollyDelta.y));
        } else if (dollyDelta.y < 0) {
          dollyIn(getZoomScale(dollyDelta.y));
        }
        dollyStart.copy(dollyEnd);
        scope.update();
      }
      function handleMouseMovePan(event) {
        panEnd.set(event.clientX, event.clientY);
        panDelta.subVectors(panEnd, panStart).multiplyScalar(scope.panSpeed);
        pan(panDelta.x, panDelta.y);
        panStart.copy(panEnd);
        scope.update();
      }
      function handleMouseWheel(event) {
        updateZoomParameters(event.clientX, event.clientY);
        if (event.deltaY < 0) {
          dollyIn(getZoomScale(event.deltaY));
        } else if (event.deltaY > 0) {
          dollyOut(getZoomScale(event.deltaY));
        }
        scope.update();
      }
      function handleKeyDown(event) {
        let needsUpdate = false;
        switch (event.code) {
          case scope.keys.UP:
            if (event.ctrlKey || event.metaKey || event.shiftKey) {
              rotateUp(2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight);
            } else {
              pan(0, scope.keyPanSpeed);
            }
            needsUpdate = true;
            break;
          case scope.keys.BOTTOM:
            if (event.ctrlKey || event.metaKey || event.shiftKey) {
              rotateUp(-2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight);
            } else {
              pan(0, -scope.keyPanSpeed);
            }
            needsUpdate = true;
            break;
          case scope.keys.LEFT:
            if (event.ctrlKey || event.metaKey || event.shiftKey) {
              rotateLeft(2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight);
            } else {
              pan(scope.keyPanSpeed, 0);
            }
            needsUpdate = true;
            break;
          case scope.keys.RIGHT:
            if (event.ctrlKey || event.metaKey || event.shiftKey) {
              rotateLeft(-2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight);
            } else {
              pan(-scope.keyPanSpeed, 0);
            }
            needsUpdate = true;
            break;
        }
        if (needsUpdate) {
          event.preventDefault();
          scope.update();
        }
      }
      function handleTouchStartRotate(event) {
        if (pointers.length === 1) {
          rotateStart.set(event.pageX, event.pageY);
        } else {
          const position = getSecondPointerPosition(event);
          const x = 0.5 * (event.pageX + position.x);
          const y = 0.5 * (event.pageY + position.y);
          rotateStart.set(x, y);
        }
      }
      function handleTouchStartPan(event) {
        if (pointers.length === 1) {
          panStart.set(event.pageX, event.pageY);
        } else {
          const position = getSecondPointerPosition(event);
          const x = 0.5 * (event.pageX + position.x);
          const y = 0.5 * (event.pageY + position.y);
          panStart.set(x, y);
        }
      }
      function handleTouchStartDolly(event) {
        const position = getSecondPointerPosition(event);
        const dx = event.pageX - position.x;
        const dy = event.pageY - position.y;
        const distance = Math.sqrt(dx * dx + dy * dy);
        dollyStart.set(0, distance);
      }
      function handleTouchStartDollyPan(event) {
        if (scope.enableZoom) handleTouchStartDolly(event);
        if (scope.enablePan) handleTouchStartPan(event);
      }
      function handleTouchStartDollyRotate(event) {
        if (scope.enableZoom) handleTouchStartDolly(event);
        if (scope.enableRotate) handleTouchStartRotate(event);
      }
      function handleTouchMoveRotate(event) {
        if (pointers.length == 1) {
          rotateEnd.set(event.pageX, event.pageY);
        } else {
          const position = getSecondPointerPosition(event);
          const x = 0.5 * (event.pageX + position.x);
          const y = 0.5 * (event.pageY + position.y);
          rotateEnd.set(x, y);
        }
        rotateDelta.subVectors(rotateEnd, rotateStart).multiplyScalar(scope.rotateSpeed);
        const element = scope.domElement;
        rotateLeft(2 * Math.PI * rotateDelta.x / element.clientHeight);
        rotateUp(2 * Math.PI * rotateDelta.y / element.clientHeight);
        rotateStart.copy(rotateEnd);
      }
      function handleTouchMovePan(event) {
        if (pointers.length === 1) {
          panEnd.set(event.pageX, event.pageY);
        } else {
          const position = getSecondPointerPosition(event);
          const x = 0.5 * (event.pageX + position.x);
          const y = 0.5 * (event.pageY + position.y);
          panEnd.set(x, y);
        }
        panDelta.subVectors(panEnd, panStart).multiplyScalar(scope.panSpeed);
        pan(panDelta.x, panDelta.y);
        panStart.copy(panEnd);
      }
      function handleTouchMoveDolly(event) {
        const position = getSecondPointerPosition(event);
        const dx = event.pageX - position.x;
        const dy = event.pageY - position.y;
        const distance = Math.sqrt(dx * dx + dy * dy);
        dollyEnd.set(0, distance);
        dollyDelta.set(0, Math.pow(dollyEnd.y / dollyStart.y, scope.zoomSpeed));
        dollyOut(dollyDelta.y);
        dollyStart.copy(dollyEnd);
        const centerX = (event.pageX + position.x) * 0.5;
        const centerY = (event.pageY + position.y) * 0.5;
        updateZoomParameters(centerX, centerY);
      }
      function handleTouchMoveDollyPan(event) {
        if (scope.enableZoom) handleTouchMoveDolly(event);
        if (scope.enablePan) handleTouchMovePan(event);
      }
      function handleTouchMoveDollyRotate(event) {
        if (scope.enableZoom) handleTouchMoveDolly(event);
        if (scope.enableRotate) handleTouchMoveRotate(event);
      }
      function onPointerDown2(event) {
        if (scope.enabled === false) return;
        if (pointers.length === 0) {
          scope.domElement.setPointerCapture(event.pointerId);
          scope.domElement.addEventListener("pointermove", onPointerMove2);
          scope.domElement.addEventListener("pointerup", onPointerUp2);
        }
        addPointer(event);
        if (event.pointerType === "touch") {
          onTouchStart(event);
        } else {
          onMouseDown(event);
        }
      }
      function onPointerMove2(event) {
        if (scope.enabled === false) return;
        if (event.pointerType === "touch") {
          onTouchMove(event);
        } else {
          onMouseMove(event);
        }
      }
      function onPointerUp2(event) {
        removePointer(event);
        if (pointers.length === 0) {
          scope.domElement.releasePointerCapture(event.pointerId);
          scope.domElement.removeEventListener("pointermove", onPointerMove2);
          scope.domElement.removeEventListener("pointerup", onPointerUp2);
        }
        scope.dispatchEvent(_endEvent);
        state = STATE.NONE;
      }
      function onMouseDown(event) {
        let mouseAction;
        switch (event.button) {
          case 0:
            mouseAction = scope.mouseButtons.LEFT;
            break;
          case 1:
            mouseAction = scope.mouseButtons.MIDDLE;
            break;
          case 2:
            mouseAction = scope.mouseButtons.RIGHT;
            break;
          default:
            mouseAction = -1;
        }
        switch (mouseAction) {
          case MOUSE.DOLLY:
            if (scope.enableZoom === false) return;
            handleMouseDownDolly(event);
            state = STATE.DOLLY;
            break;
          case MOUSE.ROTATE:
            if (event.ctrlKey || event.metaKey || event.shiftKey) {
              if (scope.enablePan === false) return;
              handleMouseDownPan(event);
              state = STATE.PAN;
            } else {
              if (scope.enableRotate === false) return;
              handleMouseDownRotate(event);
              state = STATE.ROTATE;
            }
            break;
          case MOUSE.PAN:
            if (event.ctrlKey || event.metaKey || event.shiftKey) {
              if (scope.enableRotate === false) return;
              handleMouseDownRotate(event);
              state = STATE.ROTATE;
            } else {
              if (scope.enablePan === false) return;
              handleMouseDownPan(event);
              state = STATE.PAN;
            }
            break;
          default:
            state = STATE.NONE;
        }
        if (state !== STATE.NONE) {
          scope.dispatchEvent(_startEvent);
        }
      }
      function onMouseMove(event) {
        switch (state) {
          case STATE.ROTATE:
            if (scope.enableRotate === false) return;
            handleMouseMoveRotate(event);
            break;
          case STATE.DOLLY:
            if (scope.enableZoom === false) return;
            handleMouseMoveDolly(event);
            break;
          case STATE.PAN:
            if (scope.enablePan === false) return;
            handleMouseMovePan(event);
            break;
        }
      }
      function onMouseWheel(event) {
        if (scope.enabled === false || scope.enableZoom === false || state !== STATE.NONE) return;
        event.preventDefault();
        scope.dispatchEvent(_startEvent);
        handleMouseWheel(event);
        scope.dispatchEvent(_endEvent);
      }
      function onKeyDown(event) {
        if (scope.enabled === false || scope.enablePan === false) return;
        handleKeyDown(event);
      }
      function onTouchStart(event) {
        trackPointer(event);
        switch (pointers.length) {
          case 1:
            switch (scope.touches.ONE) {
              case TOUCH.ROTATE:
                if (scope.enableRotate === false) return;
                handleTouchStartRotate(event);
                state = STATE.TOUCH_ROTATE;
                break;
              case TOUCH.PAN:
                if (scope.enablePan === false) return;
                handleTouchStartPan(event);
                state = STATE.TOUCH_PAN;
                break;
              default:
                state = STATE.NONE;
            }
            break;
          case 2:
            switch (scope.touches.TWO) {
              case TOUCH.DOLLY_PAN:
                if (scope.enableZoom === false && scope.enablePan === false) return;
                handleTouchStartDollyPan(event);
                state = STATE.TOUCH_DOLLY_PAN;
                break;
              case TOUCH.DOLLY_ROTATE:
                if (scope.enableZoom === false && scope.enableRotate === false) return;
                handleTouchStartDollyRotate(event);
                state = STATE.TOUCH_DOLLY_ROTATE;
                break;
              default:
                state = STATE.NONE;
            }
            break;
          default:
            state = STATE.NONE;
        }
        if (state !== STATE.NONE) {
          scope.dispatchEvent(_startEvent);
        }
      }
      function onTouchMove(event) {
        trackPointer(event);
        switch (state) {
          case STATE.TOUCH_ROTATE:
            if (scope.enableRotate === false) return;
            handleTouchMoveRotate(event);
            scope.update();
            break;
          case STATE.TOUCH_PAN:
            if (scope.enablePan === false) return;
            handleTouchMovePan(event);
            scope.update();
            break;
          case STATE.TOUCH_DOLLY_PAN:
            if (scope.enableZoom === false && scope.enablePan === false) return;
            handleTouchMoveDollyPan(event);
            scope.update();
            break;
          case STATE.TOUCH_DOLLY_ROTATE:
            if (scope.enableZoom === false && scope.enableRotate === false) return;
            handleTouchMoveDollyRotate(event);
            scope.update();
            break;
          default:
            state = STATE.NONE;
        }
      }
      function onContextMenu(event) {
        if (scope.enabled === false) return;
        event.preventDefault();
      }
      function addPointer(event) {
        pointers.push(event.pointerId);
      }
      function removePointer(event) {
        delete pointerPositions[event.pointerId];
        for (let i = 0; i < pointers.length; i++) {
          if (pointers[i] == event.pointerId) {
            pointers.splice(i, 1);
            return;
          }
        }
      }
      function trackPointer(event) {
        let position = pointerPositions[event.pointerId];
        if (position === void 0) {
          position = new Vector2();
          pointerPositions[event.pointerId] = position;
        }
        position.set(event.pageX, event.pageY);
      }
      function getSecondPointerPosition(event) {
        const pointerId = event.pointerId === pointers[0] ? pointers[1] : pointers[0];
        return pointerPositions[pointerId];
      }
      scope.domElement.addEventListener("contextmenu", onContextMenu);
      scope.domElement.addEventListener("pointerdown", onPointerDown2);
      scope.domElement.addEventListener("pointercancel", onPointerUp2);
      scope.domElement.addEventListener("wheel", onMouseWheel, { passive: false });
      this.update();
    }
  };

  // examples/jsm/controls/TransformControls.js
  var _raycaster = new Raycaster();
  var _tempVector = new Vector3();
  var _tempVector2 = new Vector3();
  var _tempQuaternion = new Quaternion();
  var _unit = {
    X: new Vector3(1, 0, 0),
    Y: new Vector3(0, 1, 0),
    Z: new Vector3(0, 0, 1)
  };
  var _changeEvent2 = { type: "change" };
  var _mouseDownEvent = { type: "mouseDown" };
  var _mouseUpEvent = { type: "mouseUp", mode: null };
  var _objectChangeEvent = { type: "objectChange" };
  var TransformControls = class extends Object3D {
    constructor(camera, domElement) {
      super();
      if (domElement === void 0) {
        console.warn('THREE.TransformControls: The second parameter "domElement" is now mandatory.');
        domElement = document;
      }
      this.isTransformControls = true;
      this.visible = false;
      this.domElement = domElement;
      this.domElement.style.touchAction = "none";
      const _gizmo = new TransformControlsGizmo();
      this._gizmo = _gizmo;
      this.add(_gizmo);
      const _plane2 = new TransformControlsPlane();
      this._plane = _plane2;
      this.add(_plane2);
      const scope = this;
      function defineProperty(propName, defaultValue) {
        let propValue = defaultValue;
        Object.defineProperty(scope, propName, {
          get: function() {
            return propValue !== void 0 ? propValue : defaultValue;
          },
          set: function(value) {
            if (propValue !== value) {
              propValue = value;
              _plane2[propName] = value;
              _gizmo[propName] = value;
              scope.dispatchEvent({ type: propName + "-changed", value });
              scope.dispatchEvent(_changeEvent2);
            }
          }
        });
        scope[propName] = defaultValue;
        _plane2[propName] = defaultValue;
        _gizmo[propName] = defaultValue;
      }
      defineProperty("camera", camera);
      defineProperty("object", void 0);
      defineProperty("enabled", true);
      defineProperty("axis", null);
      defineProperty("mode", "translate");
      defineProperty("translationSnap", null);
      defineProperty("rotationSnap", null);
      defineProperty("scaleSnap", null);
      defineProperty("space", "world");
      defineProperty("size", 1);
      defineProperty("dragging", false);
      defineProperty("showX", true);
      defineProperty("showY", true);
      defineProperty("showZ", true);
      const worldPosition = new Vector3();
      const worldPositionStart = new Vector3();
      const worldQuaternion = new Quaternion();
      const worldQuaternionStart = new Quaternion();
      const cameraPosition = new Vector3();
      const cameraQuaternion = new Quaternion();
      const pointStart = new Vector3();
      const pointEnd = new Vector3();
      const rotationAxis = new Vector3();
      const rotationAngle = 0;
      const eye = new Vector3();
      defineProperty("worldPosition", worldPosition);
      defineProperty("worldPositionStart", worldPositionStart);
      defineProperty("worldQuaternion", worldQuaternion);
      defineProperty("worldQuaternionStart", worldQuaternionStart);
      defineProperty("cameraPosition", cameraPosition);
      defineProperty("cameraQuaternion", cameraQuaternion);
      defineProperty("pointStart", pointStart);
      defineProperty("pointEnd", pointEnd);
      defineProperty("rotationAxis", rotationAxis);
      defineProperty("rotationAngle", rotationAngle);
      defineProperty("eye", eye);
      this._offset = new Vector3();
      this._startNorm = new Vector3();
      this._endNorm = new Vector3();
      this._cameraScale = new Vector3();
      this._parentPosition = new Vector3();
      this._parentQuaternion = new Quaternion();
      this._parentQuaternionInv = new Quaternion();
      this._parentScale = new Vector3();
      this._worldScaleStart = new Vector3();
      this._worldQuaternionInv = new Quaternion();
      this._worldScale = new Vector3();
      this._positionStart = new Vector3();
      this._quaternionStart = new Quaternion();
      this._scaleStart = new Vector3();
      this._getPointer = getPointer.bind(this);
      this._onPointerDown = onPointerDown.bind(this);
      this._onPointerHover = onPointerHover.bind(this);
      this._onPointerMove = onPointerMove.bind(this);
      this._onPointerUp = onPointerUp.bind(this);
      this.domElement.addEventListener("pointerdown", this._onPointerDown);
      this.domElement.addEventListener("pointermove", this._onPointerHover);
      this.domElement.addEventListener("pointerup", this._onPointerUp);
    }
    // updateMatrixWorld  updates key transformation variables
    updateMatrixWorld() {
      if (this.object !== void 0) {
        this.object.updateMatrixWorld();
        if (this.object.parent === null) {
          console.error("TransformControls: The attached 3D object must be a part of the scene graph.");
        } else {
          this.object.parent.matrixWorld.decompose(this._parentPosition, this._parentQuaternion, this._parentScale);
        }
        this.object.matrixWorld.decompose(this.worldPosition, this.worldQuaternion, this._worldScale);
        this._parentQuaternionInv.copy(this._parentQuaternion).invert();
        this._worldQuaternionInv.copy(this.worldQuaternion).invert();
      }
      this.camera.updateMatrixWorld();
      this.camera.matrixWorld.decompose(this.cameraPosition, this.cameraQuaternion, this._cameraScale);
      if (this.camera.isOrthographicCamera) {
        this.camera.getWorldDirection(this.eye).negate();
      } else {
        this.eye.copy(this.cameraPosition).sub(this.worldPosition).normalize();
      }
      super.updateMatrixWorld(this);
    }
    pointerHover(pointer) {
      if (this.object === void 0 || this.dragging === true) return;
      _raycaster.setFromCamera(pointer, this.camera);
      const intersect = intersectObjectWithRay(this._gizmo.picker[this.mode], _raycaster);
      if (intersect) {
        this.axis = intersect.object.name;
      } else {
        this.axis = null;
      }
    }
    pointerDown(pointer) {
      if (this.object === void 0 || this.dragging === true || pointer.button !== 0) return;
      if (this.axis !== null) {
        _raycaster.setFromCamera(pointer, this.camera);
        const planeIntersect = intersectObjectWithRay(this._plane, _raycaster, true);
        if (planeIntersect) {
          this.object.updateMatrixWorld();
          this.object.parent.updateMatrixWorld();
          this._positionStart.copy(this.object.position);
          this._quaternionStart.copy(this.object.quaternion);
          this._scaleStart.copy(this.object.scale);
          this.object.matrixWorld.decompose(this.worldPositionStart, this.worldQuaternionStart, this._worldScaleStart);
          this.pointStart.copy(planeIntersect.point).sub(this.worldPositionStart);
        }
        this.dragging = true;
        _mouseDownEvent.mode = this.mode;
        this.dispatchEvent(_mouseDownEvent);
      }
    }
    pointerMove(pointer) {
      const axis = this.axis;
      const mode = this.mode;
      const object = this.object;
      let space = this.space;
      if (mode === "scale") {
        space = "local";
      } else if (axis === "E" || axis === "XYZE" || axis === "XYZ") {
        space = "world";
      }
      if (object === void 0 || axis === null || this.dragging === false || pointer.button !== -1) return;
      _raycaster.setFromCamera(pointer, this.camera);
      const planeIntersect = intersectObjectWithRay(this._plane, _raycaster, true);
      if (!planeIntersect) return;
      this.pointEnd.copy(planeIntersect.point).sub(this.worldPositionStart);
      if (mode === "translate") {
        this._offset.copy(this.pointEnd).sub(this.pointStart);
        if (space === "local" && axis !== "XYZ") {
          this._offset.applyQuaternion(this._worldQuaternionInv);
        }
        if (axis.indexOf("X") === -1) this._offset.x = 0;
        if (axis.indexOf("Y") === -1) this._offset.y = 0;
        if (axis.indexOf("Z") === -1) this._offset.z = 0;
        if (space === "local" && axis !== "XYZ") {
          this._offset.applyQuaternion(this._quaternionStart).divide(this._parentScale);
        } else {
          this._offset.applyQuaternion(this._parentQuaternionInv).divide(this._parentScale);
        }
        object.position.copy(this._offset).add(this._positionStart);
        if (this.translationSnap) {
          if (space === "local") {
            object.position.applyQuaternion(_tempQuaternion.copy(this._quaternionStart).invert());
            if (axis.search("X") !== -1) {
              object.position.x = Math.round(object.position.x / this.translationSnap) * this.translationSnap;
            }
            if (axis.search("Y") !== -1) {
              object.position.y = Math.round(object.position.y / this.translationSnap) * this.translationSnap;
            }
            if (axis.search("Z") !== -1) {
              object.position.z = Math.round(object.position.z / this.translationSnap) * this.translationSnap;
            }
            object.position.applyQuaternion(this._quaternionStart);
          }
          if (space === "world") {
            if (object.parent) {
              object.position.add(_tempVector.setFromMatrixPosition(object.parent.matrixWorld));
            }
            if (axis.search("X") !== -1) {
              object.position.x = Math.round(object.position.x / this.translationSnap) * this.translationSnap;
            }
            if (axis.search("Y") !== -1) {
              object.position.y = Math.round(object.position.y / this.translationSnap) * this.translationSnap;
            }
            if (axis.search("Z") !== -1) {
              object.position.z = Math.round(object.position.z / this.translationSnap) * this.translationSnap;
            }
            if (object.parent) {
              object.position.sub(_tempVector.setFromMatrixPosition(object.parent.matrixWorld));
            }
          }
        }
      } else if (mode === "scale") {
        if (axis.search("XYZ") !== -1) {
          let d = this.pointEnd.length() / this.pointStart.length();
          if (this.pointEnd.dot(this.pointStart) < 0) d *= -1;
          _tempVector2.set(d, d, d);
        } else {
          _tempVector.copy(this.pointStart);
          _tempVector2.copy(this.pointEnd);
          _tempVector.applyQuaternion(this._worldQuaternionInv);
          _tempVector2.applyQuaternion(this._worldQuaternionInv);
          _tempVector2.divide(_tempVector);
          if (axis.search("X") === -1) {
            _tempVector2.x = 1;
          }
          if (axis.search("Y") === -1) {
            _tempVector2.y = 1;
          }
          if (axis.search("Z") === -1) {
            _tempVector2.z = 1;
          }
        }
        object.scale.copy(this._scaleStart).multiply(_tempVector2);
        if (this.scaleSnap) {
          if (axis.search("X") !== -1) {
            object.scale.x = Math.round(object.scale.x / this.scaleSnap) * this.scaleSnap || this.scaleSnap;
          }
          if (axis.search("Y") !== -1) {
            object.scale.y = Math.round(object.scale.y / this.scaleSnap) * this.scaleSnap || this.scaleSnap;
          }
          if (axis.search("Z") !== -1) {
            object.scale.z = Math.round(object.scale.z / this.scaleSnap) * this.scaleSnap || this.scaleSnap;
          }
        }
      } else if (mode === "rotate") {
        this._offset.copy(this.pointEnd).sub(this.pointStart);
        const ROTATION_SPEED = 20 / this.worldPosition.distanceTo(_tempVector.setFromMatrixPosition(this.camera.matrixWorld));
        let _inPlaneRotation = false;
        if (axis === "XYZE") {
          this.rotationAxis.copy(this._offset).cross(this.eye).normalize();
          this.rotationAngle = this._offset.dot(_tempVector.copy(this.rotationAxis).cross(this.eye)) * ROTATION_SPEED;
        } else if (axis === "X" || axis === "Y" || axis === "Z") {
          this.rotationAxis.copy(_unit[axis]);
          _tempVector.copy(_unit[axis]);
          if (space === "local") {
            _tempVector.applyQuaternion(this.worldQuaternion);
          }
          _tempVector.cross(this.eye);
          if (_tempVector.length() === 0) {
            _inPlaneRotation = true;
          } else {
            this.rotationAngle = this._offset.dot(_tempVector.normalize()) * ROTATION_SPEED;
          }
        }
        if (axis === "E" || _inPlaneRotation) {
          this.rotationAxis.copy(this.eye);
          this.rotationAngle = this.pointEnd.angleTo(this.pointStart);
          this._startNorm.copy(this.pointStart).normalize();
          this._endNorm.copy(this.pointEnd).normalize();
          this.rotationAngle *= this._endNorm.cross(this._startNorm).dot(this.eye) < 0 ? 1 : -1;
        }
        if (this.rotationSnap) this.rotationAngle = Math.round(this.rotationAngle / this.rotationSnap) * this.rotationSnap;
        if (space === "local" && axis !== "E" && axis !== "XYZE") {
          object.quaternion.copy(this._quaternionStart);
          object.quaternion.multiply(_tempQuaternion.setFromAxisAngle(this.rotationAxis, this.rotationAngle)).normalize();
        } else {
          this.rotationAxis.applyQuaternion(this._parentQuaternionInv);
          object.quaternion.copy(_tempQuaternion.setFromAxisAngle(this.rotationAxis, this.rotationAngle));
          object.quaternion.multiply(this._quaternionStart).normalize();
        }
      }
      this.dispatchEvent(_changeEvent2);
      this.dispatchEvent(_objectChangeEvent);
    }
    pointerUp(pointer) {
      if (pointer.button !== 0) return;
      if (this.dragging && this.axis !== null) {
        _mouseUpEvent.mode = this.mode;
        this.dispatchEvent(_mouseUpEvent);
      }
      this.dragging = false;
      this.axis = null;
    }
    dispose() {
      this.domElement.removeEventListener("pointerdown", this._onPointerDown);
      this.domElement.removeEventListener("pointermove", this._onPointerHover);
      this.domElement.removeEventListener("pointermove", this._onPointerMove);
      this.domElement.removeEventListener("pointerup", this._onPointerUp);
      this.traverse(function(child) {
        if (child.geometry) child.geometry.dispose();
        if (child.material) child.material.dispose();
      });
    }
    // Set current object
    attach(object) {
      this.object = object;
      this.visible = true;
      return this;
    }
    // Detach from object
    detach() {
      this.object = void 0;
      this.visible = false;
      this.axis = null;
      return this;
    }
    reset() {
      if (!this.enabled) return;
      if (this.dragging) {
        this.object.position.copy(this._positionStart);
        this.object.quaternion.copy(this._quaternionStart);
        this.object.scale.copy(this._scaleStart);
        this.dispatchEvent(_changeEvent2);
        this.dispatchEvent(_objectChangeEvent);
        this.pointStart.copy(this.pointEnd);
      }
    }
    getRaycaster() {
      return _raycaster;
    }
    // TODO: deprecate
    getMode() {
      return this.mode;
    }
    setMode(mode) {
      this.mode = mode;
    }
    setTranslationSnap(translationSnap) {
      this.translationSnap = translationSnap;
    }
    setRotationSnap(rotationSnap) {
      this.rotationSnap = rotationSnap;
    }
    setScaleSnap(scaleSnap) {
      this.scaleSnap = scaleSnap;
    }
    setSize(size) {
      this.size = size;
    }
    setSpace(space) {
      this.space = space;
    }
  };
  function getPointer(event) {
    if (this.domElement.ownerDocument.pointerLockElement) {
      return {
        x: 0,
        y: 0,
        button: event.button
      };
    } else {
      const rect = this.domElement.getBoundingClientRect();
      return {
        x: (event.clientX - rect.left) / rect.width * 2 - 1,
        y: -(event.clientY - rect.top) / rect.height * 2 + 1,
        button: event.button
      };
    }
  }
  function onPointerHover(event) {
    if (!this.enabled) return;
    switch (event.pointerType) {
      case "mouse":
      case "pen":
        this.pointerHover(this._getPointer(event));
        break;
    }
  }
  function onPointerDown(event) {
    if (!this.enabled) return;
    if (!document.pointerLockElement) {
      this.domElement.setPointerCapture(event.pointerId);
    }
    this.domElement.addEventListener("pointermove", this._onPointerMove);
    this.pointerHover(this._getPointer(event));
    this.pointerDown(this._getPointer(event));
  }
  function onPointerMove(event) {
    if (!this.enabled) return;
    this.pointerMove(this._getPointer(event));
  }
  function onPointerUp(event) {
    if (!this.enabled) return;
    this.domElement.releasePointerCapture(event.pointerId);
    this.domElement.removeEventListener("pointermove", this._onPointerMove);
    this.pointerUp(this._getPointer(event));
  }
  function intersectObjectWithRay(object, raycaster, includeInvisible) {
    const allIntersections = raycaster.intersectObject(object, true);
    for (let i = 0; i < allIntersections.length; i++) {
      if (allIntersections[i].object.visible || includeInvisible) {
        return allIntersections[i];
      }
    }
    return false;
  }
  var _tempEuler = new Euler();
  var _alignVector = new Vector3(0, 1, 0);
  var _zeroVector = new Vector3(0, 0, 0);
  var _lookAtMatrix = new Matrix4();
  var _tempQuaternion2 = new Quaternion();
  var _identityQuaternion = new Quaternion();
  var _dirVector = new Vector3();
  var _tempMatrix = new Matrix4();
  var _unitX = new Vector3(1, 0, 0);
  var _unitY = new Vector3(0, 1, 0);
  var _unitZ = new Vector3(0, 0, 1);
  var _v12 = new Vector3();
  var _v22 = new Vector3();
  var _v32 = new Vector3();
  var TransformControlsGizmo = class extends Object3D {
    constructor() {
      super();
      this.isTransformControlsGizmo = true;
      this.type = "TransformControlsGizmo";
      const gizmoMaterial = new MeshBasicMaterial({
        depthTest: false,
        depthWrite: false,
        fog: false,
        toneMapped: false,
        transparent: true
      });
      const gizmoLineMaterial = new LineBasicMaterial({
        depthTest: false,
        depthWrite: false,
        fog: false,
        toneMapped: false,
        transparent: true
      });
      const matInvisible = gizmoMaterial.clone();
      matInvisible.opacity = 0.15;
      const matHelper = gizmoLineMaterial.clone();
      matHelper.opacity = 0.5;
      const matRed = gizmoMaterial.clone();
      matRed.color.setHex(16711680);
      const matGreen = gizmoMaterial.clone();
      matGreen.color.setHex(65280);
      const matBlue = gizmoMaterial.clone();
      matBlue.color.setHex(255);
      const matRedTransparent = gizmoMaterial.clone();
      matRedTransparent.color.setHex(16711680);
      matRedTransparent.opacity = 0.5;
      const matGreenTransparent = gizmoMaterial.clone();
      matGreenTransparent.color.setHex(65280);
      matGreenTransparent.opacity = 0.5;
      const matBlueTransparent = gizmoMaterial.clone();
      matBlueTransparent.color.setHex(255);
      matBlueTransparent.opacity = 0.5;
      const matWhiteTransparent = gizmoMaterial.clone();
      matWhiteTransparent.opacity = 0.25;
      const matYellowTransparent = gizmoMaterial.clone();
      matYellowTransparent.color.setHex(16776960);
      matYellowTransparent.opacity = 0.25;
      const matYellow = gizmoMaterial.clone();
      matYellow.color.setHex(16776960);
      const matGray = gizmoMaterial.clone();
      matGray.color.setHex(7895160);
      const arrowGeometry = new CylinderGeometry(0, 0.04, 0.1, 12);
      arrowGeometry.translate(0, 0.05, 0);
      const scaleHandleGeometry = new BoxGeometry(0.08, 0.08, 0.08);
      scaleHandleGeometry.translate(0, 0.04, 0);
      const lineGeometry = new BufferGeometry();
      lineGeometry.setAttribute("position", new Float32BufferAttribute([0, 0, 0, 1, 0, 0], 3));
      const lineGeometry2 = new CylinderGeometry(75e-4, 75e-4, 0.5, 3);
      lineGeometry2.translate(0, 0.25, 0);
      function CircleGeometry2(radius, arc) {
        const geometry = new TorusGeometry(radius, 75e-4, 3, 64, arc * Math.PI * 2);
        geometry.rotateY(Math.PI / 2);
        geometry.rotateX(Math.PI / 2);
        return geometry;
      }
      function TranslateHelperGeometry() {
        const geometry = new BufferGeometry();
        geometry.setAttribute("position", new Float32BufferAttribute([0, 0, 0, 1, 1, 1], 3));
        return geometry;
      }
      const gizmoTranslate = {
        X: [
          [new Mesh(arrowGeometry, matRed), [0.5, 0, 0], [0, 0, -Math.PI / 2]],
          [new Mesh(arrowGeometry, matRed), [-0.5, 0, 0], [0, 0, Math.PI / 2]],
          [new Mesh(lineGeometry2, matRed), [0, 0, 0], [0, 0, -Math.PI / 2]]
        ],
        Y: [
          [new Mesh(arrowGeometry, matGreen), [0, 0.5, 0]],
          [new Mesh(arrowGeometry, matGreen), [0, -0.5, 0], [Math.PI, 0, 0]],
          [new Mesh(lineGeometry2, matGreen)]
        ],
        Z: [
          [new Mesh(arrowGeometry, matBlue), [0, 0, 0.5], [Math.PI / 2, 0, 0]],
          [new Mesh(arrowGeometry, matBlue), [0, 0, -0.5], [-Math.PI / 2, 0, 0]],
          [new Mesh(lineGeometry2, matBlue), null, [Math.PI / 2, 0, 0]]
        ],
        XYZ: [
          [new Mesh(new OctahedronGeometry(0.1, 0), matWhiteTransparent.clone()), [0, 0, 0]]
        ],
        XY: [
          [new Mesh(new BoxGeometry(0.15, 0.15, 0.01), matBlueTransparent.clone()), [0.15, 0.15, 0]]
        ],
        YZ: [
          [new Mesh(new BoxGeometry(0.15, 0.15, 0.01), matRedTransparent.clone()), [0, 0.15, 0.15], [0, Math.PI / 2, 0]]
        ],
        XZ: [
          [new Mesh(new BoxGeometry(0.15, 0.15, 0.01), matGreenTransparent.clone()), [0.15, 0, 0.15], [-Math.PI / 2, 0, 0]]
        ]
      };
      const pickerTranslate = {
        X: [
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0.3, 0, 0], [0, 0, -Math.PI / 2]],
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [-0.3, 0, 0], [0, 0, Math.PI / 2]]
        ],
        Y: [
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0, 0.3, 0]],
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0, -0.3, 0], [0, 0, Math.PI]]
        ],
        Z: [
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0, 0, 0.3], [Math.PI / 2, 0, 0]],
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0, 0, -0.3], [-Math.PI / 2, 0, 0]]
        ],
        XYZ: [
          [new Mesh(new OctahedronGeometry(0.2, 0), matInvisible)]
        ],
        XY: [
          [new Mesh(new BoxGeometry(0.2, 0.2, 0.01), matInvisible), [0.15, 0.15, 0]]
        ],
        YZ: [
          [new Mesh(new BoxGeometry(0.2, 0.2, 0.01), matInvisible), [0, 0.15, 0.15], [0, Math.PI / 2, 0]]
        ],
        XZ: [
          [new Mesh(new BoxGeometry(0.2, 0.2, 0.01), matInvisible), [0.15, 0, 0.15], [-Math.PI / 2, 0, 0]]
        ]
      };
      const helperTranslate = {
        START: [
          [new Mesh(new OctahedronGeometry(0.01, 2), matHelper), null, null, null, "helper"]
        ],
        END: [
          [new Mesh(new OctahedronGeometry(0.01, 2), matHelper), null, null, null, "helper"]
        ],
        DELTA: [
          [new Line(TranslateHelperGeometry(), matHelper), null, null, null, "helper"]
        ],
        X: [
          [new Line(lineGeometry, matHelper.clone()), [-1e3, 0, 0], null, [1e6, 1, 1], "helper"]
        ],
        Y: [
          [new Line(lineGeometry, matHelper.clone()), [0, -1e3, 0], [0, 0, Math.PI / 2], [1e6, 1, 1], "helper"]
        ],
        Z: [
          [new Line(lineGeometry, matHelper.clone()), [0, 0, -1e3], [0, -Math.PI / 2, 0], [1e6, 1, 1], "helper"]
        ]
      };
      const gizmoRotate = {
        XYZE: [
          [new Mesh(CircleGeometry2(0.5, 1), matGray), null, [0, Math.PI / 2, 0]]
        ],
        X: [
          [new Mesh(CircleGeometry2(0.5, 0.5), matRed)]
        ],
        Y: [
          [new Mesh(CircleGeometry2(0.5, 0.5), matGreen), null, [0, 0, -Math.PI / 2]]
        ],
        Z: [
          [new Mesh(CircleGeometry2(0.5, 0.5), matBlue), null, [0, Math.PI / 2, 0]]
        ],
        E: [
          [new Mesh(CircleGeometry2(0.75, 1), matYellowTransparent), null, [0, Math.PI / 2, 0]]
        ]
      };
      const helperRotate = {
        AXIS: [
          [new Line(lineGeometry, matHelper.clone()), [-1e3, 0, 0], null, [1e6, 1, 1], "helper"]
        ]
      };
      const pickerRotate = {
        XYZE: [
          [new Mesh(new SphereGeometry(0.25, 10, 8), matInvisible)]
        ],
        X: [
          [new Mesh(new TorusGeometry(0.5, 0.1, 4, 24), matInvisible), [0, 0, 0], [0, -Math.PI / 2, -Math.PI / 2]]
        ],
        Y: [
          [new Mesh(new TorusGeometry(0.5, 0.1, 4, 24), matInvisible), [0, 0, 0], [Math.PI / 2, 0, 0]]
        ],
        Z: [
          [new Mesh(new TorusGeometry(0.5, 0.1, 4, 24), matInvisible), [0, 0, 0], [0, 0, -Math.PI / 2]]
        ],
        E: [
          [new Mesh(new TorusGeometry(0.75, 0.1, 2, 24), matInvisible)]
        ]
      };
      const gizmoScale = {
        X: [
          [new Mesh(scaleHandleGeometry, matRed), [0.5, 0, 0], [0, 0, -Math.PI / 2]],
          [new Mesh(lineGeometry2, matRed), [0, 0, 0], [0, 0, -Math.PI / 2]],
          [new Mesh(scaleHandleGeometry, matRed), [-0.5, 0, 0], [0, 0, Math.PI / 2]]
        ],
        Y: [
          [new Mesh(scaleHandleGeometry, matGreen), [0, 0.5, 0]],
          [new Mesh(lineGeometry2, matGreen)],
          [new Mesh(scaleHandleGeometry, matGreen), [0, -0.5, 0], [0, 0, Math.PI]]
        ],
        Z: [
          [new Mesh(scaleHandleGeometry, matBlue), [0, 0, 0.5], [Math.PI / 2, 0, 0]],
          [new Mesh(lineGeometry2, matBlue), [0, 0, 0], [Math.PI / 2, 0, 0]],
          [new Mesh(scaleHandleGeometry, matBlue), [0, 0, -0.5], [-Math.PI / 2, 0, 0]]
        ],
        XY: [
          [new Mesh(new BoxGeometry(0.15, 0.15, 0.01), matBlueTransparent), [0.15, 0.15, 0]]
        ],
        YZ: [
          [new Mesh(new BoxGeometry(0.15, 0.15, 0.01), matRedTransparent), [0, 0.15, 0.15], [0, Math.PI / 2, 0]]
        ],
        XZ: [
          [new Mesh(new BoxGeometry(0.15, 0.15, 0.01), matGreenTransparent), [0.15, 0, 0.15], [-Math.PI / 2, 0, 0]]
        ],
        XYZ: [
          [new Mesh(new BoxGeometry(0.1, 0.1, 0.1), matWhiteTransparent.clone())]
        ]
      };
      const pickerScale = {
        X: [
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0.3, 0, 0], [0, 0, -Math.PI / 2]],
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [-0.3, 0, 0], [0, 0, Math.PI / 2]]
        ],
        Y: [
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0, 0.3, 0]],
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0, -0.3, 0], [0, 0, Math.PI]]
        ],
        Z: [
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0, 0, 0.3], [Math.PI / 2, 0, 0]],
          [new Mesh(new CylinderGeometry(0.2, 0, 0.6, 4), matInvisible), [0, 0, -0.3], [-Math.PI / 2, 0, 0]]
        ],
        XY: [
          [new Mesh(new BoxGeometry(0.2, 0.2, 0.01), matInvisible), [0.15, 0.15, 0]]
        ],
        YZ: [
          [new Mesh(new BoxGeometry(0.2, 0.2, 0.01), matInvisible), [0, 0.15, 0.15], [0, Math.PI / 2, 0]]
        ],
        XZ: [
          [new Mesh(new BoxGeometry(0.2, 0.2, 0.01), matInvisible), [0.15, 0, 0.15], [-Math.PI / 2, 0, 0]]
        ],
        XYZ: [
          [new Mesh(new BoxGeometry(0.2, 0.2, 0.2), matInvisible), [0, 0, 0]]
        ]
      };
      const helperScale = {
        X: [
          [new Line(lineGeometry, matHelper.clone()), [-1e3, 0, 0], null, [1e6, 1, 1], "helper"]
        ],
        Y: [
          [new Line(lineGeometry, matHelper.clone()), [0, -1e3, 0], [0, 0, Math.PI / 2], [1e6, 1, 1], "helper"]
        ],
        Z: [
          [new Line(lineGeometry, matHelper.clone()), [0, 0, -1e3], [0, -Math.PI / 2, 0], [1e6, 1, 1], "helper"]
        ]
      };
      function setupGizmo(gizmoMap) {
        const gizmo = new Object3D();
        for (const name in gizmoMap) {
          for (let i = gizmoMap[name].length; i--; ) {
            const object = gizmoMap[name][i][0].clone();
            const position = gizmoMap[name][i][1];
            const rotation = gizmoMap[name][i][2];
            const scale = gizmoMap[name][i][3];
            const tag = gizmoMap[name][i][4];
            object.name = name;
            object.tag = tag;
            if (position) {
              object.position.set(position[0], position[1], position[2]);
            }
            if (rotation) {
              object.rotation.set(rotation[0], rotation[1], rotation[2]);
            }
            if (scale) {
              object.scale.set(scale[0], scale[1], scale[2]);
            }
            object.updateMatrix();
            const tempGeometry = object.geometry.clone();
            tempGeometry.applyMatrix4(object.matrix);
            object.geometry = tempGeometry;
            object.renderOrder = Infinity;
            object.position.set(0, 0, 0);
            object.rotation.set(0, 0, 0);
            object.scale.set(1, 1, 1);
            gizmo.add(object);
          }
        }
        return gizmo;
      }
      this.gizmo = {};
      this.picker = {};
      this.helper = {};
      this.add(this.gizmo["translate"] = setupGizmo(gizmoTranslate));
      this.add(this.gizmo["rotate"] = setupGizmo(gizmoRotate));
      this.add(this.gizmo["scale"] = setupGizmo(gizmoScale));
      this.add(this.picker["translate"] = setupGizmo(pickerTranslate));
      this.add(this.picker["rotate"] = setupGizmo(pickerRotate));
      this.add(this.picker["scale"] = setupGizmo(pickerScale));
      this.add(this.helper["translate"] = setupGizmo(helperTranslate));
      this.add(this.helper["rotate"] = setupGizmo(helperRotate));
      this.add(this.helper["scale"] = setupGizmo(helperScale));
      this.picker["translate"].visible = false;
      this.picker["rotate"].visible = false;
      this.picker["scale"].visible = false;
    }
    // updateMatrixWorld will update transformations and appearance of individual handles
    updateMatrixWorld(force) {
      const space = this.mode === "scale" ? "local" : this.space;
      const quaternion = space === "local" ? this.worldQuaternion : _identityQuaternion;
      this.gizmo["translate"].visible = this.mode === "translate";
      this.gizmo["rotate"].visible = this.mode === "rotate";
      this.gizmo["scale"].visible = this.mode === "scale";
      this.helper["translate"].visible = this.mode === "translate";
      this.helper["rotate"].visible = this.mode === "rotate";
      this.helper["scale"].visible = this.mode === "scale";
      let handles = [];
      handles = handles.concat(this.picker[this.mode].children);
      handles = handles.concat(this.gizmo[this.mode].children);
      handles = handles.concat(this.helper[this.mode].children);
      for (let i = 0; i < handles.length; i++) {
        const handle = handles[i];
        handle.visible = true;
        handle.rotation.set(0, 0, 0);
        handle.position.copy(this.worldPosition);
        let factor;
        if (this.camera.isOrthographicCamera) {
          factor = (this.camera.top - this.camera.bottom) / this.camera.zoom;
        } else {
          factor = this.worldPosition.distanceTo(this.cameraPosition) * Math.min(1.9 * Math.tan(Math.PI * this.camera.fov / 360) / this.camera.zoom, 7);
        }
        handle.scale.set(1, 1, 1).multiplyScalar(factor * this.size / 4);
        if (handle.tag === "helper") {
          handle.visible = false;
          if (handle.name === "AXIS") {
            handle.visible = !!this.axis;
            if (this.axis === "X") {
              _tempQuaternion.setFromEuler(_tempEuler.set(0, 0, 0));
              handle.quaternion.copy(quaternion).multiply(_tempQuaternion);
              if (Math.abs(_alignVector.copy(_unitX).applyQuaternion(quaternion).dot(this.eye)) > 0.9) {
                handle.visible = false;
              }
            }
            if (this.axis === "Y") {
              _tempQuaternion.setFromEuler(_tempEuler.set(0, 0, Math.PI / 2));
              handle.quaternion.copy(quaternion).multiply(_tempQuaternion);
              if (Math.abs(_alignVector.copy(_unitY).applyQuaternion(quaternion).dot(this.eye)) > 0.9) {
                handle.visible = false;
              }
            }
            if (this.axis === "Z") {
              _tempQuaternion.setFromEuler(_tempEuler.set(0, Math.PI / 2, 0));
              handle.quaternion.copy(quaternion).multiply(_tempQuaternion);
              if (Math.abs(_alignVector.copy(_unitZ).applyQuaternion(quaternion).dot(this.eye)) > 0.9) {
                handle.visible = false;
              }
            }
            if (this.axis === "XYZE") {
              _tempQuaternion.setFromEuler(_tempEuler.set(0, Math.PI / 2, 0));
              _alignVector.copy(this.rotationAxis);
              handle.quaternion.setFromRotationMatrix(_lookAtMatrix.lookAt(_zeroVector, _alignVector, _unitY));
              handle.quaternion.multiply(_tempQuaternion);
              handle.visible = this.dragging;
            }
            if (this.axis === "E") {
              handle.visible = false;
            }
          } else if (handle.name === "START") {
            handle.position.copy(this.worldPositionStart);
            handle.visible = this.dragging;
          } else if (handle.name === "END") {
            handle.position.copy(this.worldPosition);
            handle.visible = this.dragging;
          } else if (handle.name === "DELTA") {
            handle.position.copy(this.worldPositionStart);
            handle.quaternion.copy(this.worldQuaternionStart);
            _tempVector.set(1e-10, 1e-10, 1e-10).add(this.worldPositionStart).sub(this.worldPosition).multiplyScalar(-1);
            _tempVector.applyQuaternion(this.worldQuaternionStart.clone().invert());
            handle.scale.copy(_tempVector);
            handle.visible = this.dragging;
          } else {
            handle.quaternion.copy(quaternion);
            if (this.dragging) {
              handle.position.copy(this.worldPositionStart);
            } else {
              handle.position.copy(this.worldPosition);
            }
            if (this.axis) {
              handle.visible = this.axis.search(handle.name) !== -1;
            }
          }
          continue;
        }
        handle.quaternion.copy(quaternion);
        if (this.mode === "translate" || this.mode === "scale") {
          const AXIS_HIDE_THRESHOLD = 0.99;
          const PLANE_HIDE_THRESHOLD = 0.2;
          if (handle.name === "X") {
            if (Math.abs(_alignVector.copy(_unitX).applyQuaternion(quaternion).dot(this.eye)) > AXIS_HIDE_THRESHOLD) {
              handle.scale.set(1e-10, 1e-10, 1e-10);
              handle.visible = false;
            }
          }
          if (handle.name === "Y") {
            if (Math.abs(_alignVector.copy(_unitY).applyQuaternion(quaternion).dot(this.eye)) > AXIS_HIDE_THRESHOLD) {
              handle.scale.set(1e-10, 1e-10, 1e-10);
              handle.visible = false;
            }
          }
          if (handle.name === "Z") {
            if (Math.abs(_alignVector.copy(_unitZ).applyQuaternion(quaternion).dot(this.eye)) > AXIS_HIDE_THRESHOLD) {
              handle.scale.set(1e-10, 1e-10, 1e-10);
              handle.visible = false;
            }
          }
          if (handle.name === "XY") {
            if (Math.abs(_alignVector.copy(_unitZ).applyQuaternion(quaternion).dot(this.eye)) < PLANE_HIDE_THRESHOLD) {
              handle.scale.set(1e-10, 1e-10, 1e-10);
              handle.visible = false;
            }
          }
          if (handle.name === "YZ") {
            if (Math.abs(_alignVector.copy(_unitX).applyQuaternion(quaternion).dot(this.eye)) < PLANE_HIDE_THRESHOLD) {
              handle.scale.set(1e-10, 1e-10, 1e-10);
              handle.visible = false;
            }
          }
          if (handle.name === "XZ") {
            if (Math.abs(_alignVector.copy(_unitY).applyQuaternion(quaternion).dot(this.eye)) < PLANE_HIDE_THRESHOLD) {
              handle.scale.set(1e-10, 1e-10, 1e-10);
              handle.visible = false;
            }
          }
        } else if (this.mode === "rotate") {
          _tempQuaternion2.copy(quaternion);
          _alignVector.copy(this.eye).applyQuaternion(_tempQuaternion.copy(quaternion).invert());
          if (handle.name.search("E") !== -1) {
            handle.quaternion.setFromRotationMatrix(_lookAtMatrix.lookAt(this.eye, _zeroVector, _unitY));
          }
          if (handle.name === "X") {
            _tempQuaternion.setFromAxisAngle(_unitX, Math.atan2(-_alignVector.y, _alignVector.z));
            _tempQuaternion.multiplyQuaternions(_tempQuaternion2, _tempQuaternion);
            handle.quaternion.copy(_tempQuaternion);
          }
          if (handle.name === "Y") {
            _tempQuaternion.setFromAxisAngle(_unitY, Math.atan2(_alignVector.x, _alignVector.z));
            _tempQuaternion.multiplyQuaternions(_tempQuaternion2, _tempQuaternion);
            handle.quaternion.copy(_tempQuaternion);
          }
          if (handle.name === "Z") {
            _tempQuaternion.setFromAxisAngle(_unitZ, Math.atan2(_alignVector.y, _alignVector.x));
            _tempQuaternion.multiplyQuaternions(_tempQuaternion2, _tempQuaternion);
            handle.quaternion.copy(_tempQuaternion);
          }
        }
        handle.visible = handle.visible && (handle.name.indexOf("X") === -1 || this.showX);
        handle.visible = handle.visible && (handle.name.indexOf("Y") === -1 || this.showY);
        handle.visible = handle.visible && (handle.name.indexOf("Z") === -1 || this.showZ);
        handle.visible = handle.visible && (handle.name.indexOf("E") === -1 || this.showX && this.showY && this.showZ);
        handle.material._color = handle.material._color || handle.material.color.clone();
        handle.material._opacity = handle.material._opacity || handle.material.opacity;
        handle.material.color.copy(handle.material._color);
        handle.material.opacity = handle.material._opacity;
        if (this.enabled && this.axis) {
          if (handle.name === this.axis) {
            handle.material.color.setHex(16776960);
            handle.material.opacity = 1;
          } else if (this.axis.split("").some(function(a) {
            return handle.name === a;
          })) {
            handle.material.color.setHex(16776960);
            handle.material.opacity = 1;
          }
        }
      }
      super.updateMatrixWorld(force);
    }
  };
  var TransformControlsPlane = class extends Mesh {
    constructor() {
      super(
        new PlaneGeometry(1e5, 1e5, 2, 2),
        new MeshBasicMaterial({ visible: false, wireframe: true, side: DoubleSide, transparent: true, opacity: 0.1, toneMapped: false })
      );
      this.isTransformControlsPlane = true;
      this.type = "TransformControlsPlane";
    }
    updateMatrixWorld(force) {
      let space = this.space;
      this.position.copy(this.worldPosition);
      if (this.mode === "scale") space = "local";
      _v12.copy(_unitX).applyQuaternion(space === "local" ? this.worldQuaternion : _identityQuaternion);
      _v22.copy(_unitY).applyQuaternion(space === "local" ? this.worldQuaternion : _identityQuaternion);
      _v32.copy(_unitZ).applyQuaternion(space === "local" ? this.worldQuaternion : _identityQuaternion);
      _alignVector.copy(_v22);
      switch (this.mode) {
        case "translate":
        case "scale":
          switch (this.axis) {
            case "X":
              _alignVector.copy(this.eye).cross(_v12);
              _dirVector.copy(_v12).cross(_alignVector);
              break;
            case "Y":
              _alignVector.copy(this.eye).cross(_v22);
              _dirVector.copy(_v22).cross(_alignVector);
              break;
            case "Z":
              _alignVector.copy(this.eye).cross(_v32);
              _dirVector.copy(_v32).cross(_alignVector);
              break;
            case "XY":
              _dirVector.copy(_v32);
              break;
            case "YZ":
              _dirVector.copy(_v12);
              break;
            case "XZ":
              _alignVector.copy(_v32);
              _dirVector.copy(_v22);
              break;
            case "XYZ":
            case "E":
              _dirVector.set(0, 0, 0);
              break;
          }
          break;
        case "rotate":
        default:
          _dirVector.set(0, 0, 0);
      }
      if (_dirVector.length() === 0) {
        this.quaternion.copy(this.cameraQuaternion);
      } else {
        _tempMatrix.lookAt(_tempVector.set(0, 0, 0), _dirVector, _alignVector);
        this.quaternion.setFromRotationMatrix(_tempMatrix);
      }
      super.updateMatrixWorld(force);
    }
  };

  // examples/jsm/libs/fflate.module.js
  var durl = function(c) {
    return URL.createObjectURL(new Blob([c], { type: "text/javascript" }));
  };
  var cwk = function(u) {
    return new Worker(u);
  };
  try {
    URL.revokeObjectURL(durl(""));
  } catch (e) {
    durl = function(c) {
      return "data:application/javascript;charset=UTF-8," + encodeURI(c);
    };
    cwk = function(u) {
      return new Worker(u, { type: "module" });
    };
  }
  var u8 = Uint8Array;
  var u16 = Uint16Array;
  var u32 = Uint32Array;
  var fleb = new u8([
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    1,
    1,
    1,
    1,
    2,
    2,
    2,
    2,
    3,
    3,
    3,
    3,
    4,
    4,
    4,
    4,
    5,
    5,
    5,
    5,
    0,
    /* unused */
    0,
    0,
    /* impossible */
    0
  ]);
  var fdeb = new u8([
    0,
    0,
    0,
    0,
    1,
    1,
    2,
    2,
    3,
    3,
    4,
    4,
    5,
    5,
    6,
    6,
    7,
    7,
    8,
    8,
    9,
    9,
    10,
    10,
    11,
    11,
    12,
    12,
    13,
    13,
    /* unused */
    0,
    0
  ]);
  var clim = new u8([16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15]);
  var freb = function(eb, start) {
    var b = new u16(31);
    for (var i = 0; i < 31; ++i) {
      b[i] = start += 1 << eb[i - 1];
    }
    var r = new u32(b[30]);
    for (var i = 1; i < 30; ++i) {
      for (var j = b[i]; j < b[i + 1]; ++j) {
        r[j] = j - b[i] << 5 | i;
      }
    }
    return [b, r];
  };
  var _a = freb(fleb, 2);
  var fl = _a[0];
  var revfl = _a[1];
  fl[28] = 258, revfl[258] = 28;
  var _b = freb(fdeb, 0);
  var fd = _b[0];
  var revfd = _b[1];
  var rev = new u16(32768);
  for (i = 0; i < 32768; ++i) {
    x = (i & 43690) >>> 1 | (i & 21845) << 1;
    x = (x & 52428) >>> 2 | (x & 13107) << 2;
    x = (x & 61680) >>> 4 | (x & 3855) << 4;
    rev[i] = ((x & 65280) >>> 8 | (x & 255) << 8) >>> 1;
  }
  var x;
  var i;
  var hMap = (function(cd, mb, r) {
    var s = cd.length;
    var i = 0;
    var l = new u16(mb);
    for (; i < s; ++i)
      ++l[cd[i] - 1];
    var le = new u16(mb);
    for (i = 0; i < mb; ++i) {
      le[i] = le[i - 1] + l[i - 1] << 1;
    }
    var co;
    if (r) {
      co = new u16(1 << mb);
      var rvb = 15 - mb;
      for (i = 0; i < s; ++i) {
        if (cd[i]) {
          var sv = i << 4 | cd[i];
          var r_1 = mb - cd[i];
          var v = le[cd[i] - 1]++ << r_1;
          for (var m = v | (1 << r_1) - 1; v <= m; ++v) {
            co[rev[v] >>> rvb] = sv;
          }
        }
      }
    } else {
      co = new u16(s);
      for (i = 0; i < s; ++i) {
        if (cd[i]) {
          co[i] = rev[le[cd[i] - 1]++] >>> 15 - cd[i];
        }
      }
    }
    return co;
  });
  var flt = new u8(288);
  for (i = 0; i < 144; ++i)
    flt[i] = 8;
  var i;
  for (i = 144; i < 256; ++i)
    flt[i] = 9;
  var i;
  for (i = 256; i < 280; ++i)
    flt[i] = 7;
  var i;
  for (i = 280; i < 288; ++i)
    flt[i] = 8;
  var i;
  var fdt = new u8(32);
  for (i = 0; i < 32; ++i)
    fdt[i] = 5;
  var i;
  var flrm = /* @__PURE__ */ hMap(flt, 9, 1);
  var fdrm = /* @__PURE__ */ hMap(fdt, 5, 1);
  var max = function(a) {
    var m = a[0];
    for (var i = 1; i < a.length; ++i) {
      if (a[i] > m)
        m = a[i];
    }
    return m;
  };
  var bits = function(d, p, m) {
    var o = p / 8 | 0;
    return (d[o] | d[o + 1] << 8) >> (p & 7) & m;
  };
  var bits16 = function(d, p) {
    var o = p / 8 | 0;
    return (d[o] | d[o + 1] << 8 | d[o + 2] << 16) >> (p & 7);
  };
  var shft = function(p) {
    return (p / 8 | 0) + (p & 7 && 1);
  };
  var slc = function(v, s, e) {
    if (s == null || s < 0)
      s = 0;
    if (e == null || e > v.length)
      e = v.length;
    var n = new (v instanceof u16 ? u16 : v instanceof u32 ? u32 : u8)(e - s);
    n.set(v.subarray(s, e));
    return n;
  };
  var inflt = function(dat, buf, st) {
    var sl = dat.length;
    if (!sl || st && !st.l && sl < 5)
      return buf || new u8(0);
    var noBuf = !buf || st;
    var noSt = !st || st.i;
    if (!st)
      st = {};
    if (!buf)
      buf = new u8(sl * 3);
    var cbuf = function(l2) {
      var bl = buf.length;
      if (l2 > bl) {
        var nbuf = new u8(Math.max(bl * 2, l2));
        nbuf.set(buf);
        buf = nbuf;
      }
    };
    var final = st.f || 0, pos = st.p || 0, bt = st.b || 0, lm = st.l, dm = st.d, lbt = st.m, dbt = st.n;
    var tbts = sl * 8;
    do {
      if (!lm) {
        st.f = final = bits(dat, pos, 1);
        var type = bits(dat, pos + 1, 3);
        pos += 3;
        if (!type) {
          var s = shft(pos) + 4, l = dat[s - 4] | dat[s - 3] << 8, t = s + l;
          if (t > sl) {
            if (noSt)
              throw "unexpected EOF";
            break;
          }
          if (noBuf)
            cbuf(bt + l);
          buf.set(dat.subarray(s, t), bt);
          st.b = bt += l, st.p = pos = t * 8;
          continue;
        } else if (type == 1)
          lm = flrm, dm = fdrm, lbt = 9, dbt = 5;
        else if (type == 2) {
          var hLit = bits(dat, pos, 31) + 257, hcLen = bits(dat, pos + 10, 15) + 4;
          var tl = hLit + bits(dat, pos + 5, 31) + 1;
          pos += 14;
          var ldt = new u8(tl);
          var clt = new u8(19);
          for (var i = 0; i < hcLen; ++i) {
            clt[clim[i]] = bits(dat, pos + i * 3, 7);
          }
          pos += hcLen * 3;
          var clb = max(clt), clbmsk = (1 << clb) - 1;
          var clm = hMap(clt, clb, 1);
          for (var i = 0; i < tl; ) {
            var r = clm[bits(dat, pos, clbmsk)];
            pos += r & 15;
            var s = r >>> 4;
            if (s < 16) {
              ldt[i++] = s;
            } else {
              var c = 0, n = 0;
              if (s == 16)
                n = 3 + bits(dat, pos, 3), pos += 2, c = ldt[i - 1];
              else if (s == 17)
                n = 3 + bits(dat, pos, 7), pos += 3;
              else if (s == 18)
                n = 11 + bits(dat, pos, 127), pos += 7;
              while (n--)
                ldt[i++] = c;
            }
          }
          var lt = ldt.subarray(0, hLit), dt = ldt.subarray(hLit);
          lbt = max(lt);
          dbt = max(dt);
          lm = hMap(lt, lbt, 1);
          dm = hMap(dt, dbt, 1);
        } else
          throw "invalid block type";
        if (pos > tbts) {
          if (noSt)
            throw "unexpected EOF";
          break;
        }
      }
      if (noBuf)
        cbuf(bt + 131072);
      var lms = (1 << lbt) - 1, dms = (1 << dbt) - 1;
      var lpos = pos;
      for (; ; lpos = pos) {
        var c = lm[bits16(dat, pos) & lms], sym = c >>> 4;
        pos += c & 15;
        if (pos > tbts) {
          if (noSt)
            throw "unexpected EOF";
          break;
        }
        if (!c)
          throw "invalid length/literal";
        if (sym < 256)
          buf[bt++] = sym;
        else if (sym == 256) {
          lpos = pos, lm = null;
          break;
        } else {
          var add = sym - 254;
          if (sym > 264) {
            var i = sym - 257, b = fleb[i];
            add = bits(dat, pos, (1 << b) - 1) + fl[i];
            pos += b;
          }
          var d = dm[bits16(dat, pos) & dms], dsym = d >>> 4;
          if (!d)
            throw "invalid distance";
          pos += d & 15;
          var dt = fd[dsym];
          if (dsym > 3) {
            var b = fdeb[dsym];
            dt += bits16(dat, pos) & (1 << b) - 1, pos += b;
          }
          if (pos > tbts) {
            if (noSt)
              throw "unexpected EOF";
            break;
          }
          if (noBuf)
            cbuf(bt + 131072);
          var end = bt + add;
          for (; bt < end; bt += 4) {
            buf[bt] = buf[bt - dt];
            buf[bt + 1] = buf[bt + 1 - dt];
            buf[bt + 2] = buf[bt + 2 - dt];
            buf[bt + 3] = buf[bt + 3 - dt];
          }
          bt = end;
        }
      }
      st.l = lm, st.p = lpos, st.b = bt;
      if (lm)
        final = 1, st.m = lbt, st.d = dm, st.n = dbt;
    } while (!final);
    return bt == buf.length ? buf : slc(buf, 0, bt);
  };
  var et = /* @__PURE__ */ new u8(0);
  var zlv = function(d) {
    if ((d[0] & 15) != 8 || d[0] >>> 4 > 7 || (d[0] << 8 | d[1]) % 31)
      throw "invalid zlib data";
    if (d[1] & 32)
      throw "invalid zlib data: preset dictionaries not supported";
  };
  function unzlibSync(data, out) {
    return inflt((zlv(data), data.subarray(2, -4)), out);
  }
  var td = typeof TextDecoder != "undefined" && /* @__PURE__ */ new TextDecoder();
  var tds = 0;
  try {
    td.decode(et, { stream: true });
    tds = 1;
  } catch (e) {
  }

  // examples/jsm/curves/NURBSUtils.js
  function findSpan(p, u, U) {
    const n = U.length - p - 1;
    if (u >= U[n]) {
      return n - 1;
    }
    if (u <= U[p]) {
      return p;
    }
    let low = p;
    let high = n;
    let mid = Math.floor((low + high) / 2);
    while (u < U[mid] || u >= U[mid + 1]) {
      if (u < U[mid]) {
        high = mid;
      } else {
        low = mid;
      }
      mid = Math.floor((low + high) / 2);
    }
    return mid;
  }
  function calcBasisFunctions(span, u, p, U) {
    const N = [];
    const left = [];
    const right = [];
    N[0] = 1;
    for (let j = 1; j <= p; ++j) {
      left[j] = u - U[span + 1 - j];
      right[j] = U[span + j] - u;
      let saved = 0;
      for (let r = 0; r < j; ++r) {
        const rv = right[r + 1];
        const lv = left[j - r];
        const temp = N[r] / (rv + lv);
        N[r] = saved + rv * temp;
        saved = lv * temp;
      }
      N[j] = saved;
    }
    return N;
  }
  function calcBSplinePoint(p, U, P, u) {
    const span = findSpan(p, u, U);
    const N = calcBasisFunctions(span, u, p, U);
    const C = new Vector4(0, 0, 0, 0);
    for (let j = 0; j <= p; ++j) {
      const point = P[span - p + j];
      const Nj = N[j];
      const wNj = point.w * Nj;
      C.x += point.x * wNj;
      C.y += point.y * wNj;
      C.z += point.z * wNj;
      C.w += point.w * Nj;
    }
    return C;
  }
  function calcBasisFunctionDerivatives(span, u, p, n, U) {
    const zeroArr = [];
    for (let i = 0; i <= p; ++i)
      zeroArr[i] = 0;
    const ders = [];
    for (let i = 0; i <= n; ++i)
      ders[i] = zeroArr.slice(0);
    const ndu = [];
    for (let i = 0; i <= p; ++i)
      ndu[i] = zeroArr.slice(0);
    ndu[0][0] = 1;
    const left = zeroArr.slice(0);
    const right = zeroArr.slice(0);
    for (let j = 1; j <= p; ++j) {
      left[j] = u - U[span + 1 - j];
      right[j] = U[span + j] - u;
      let saved = 0;
      for (let r2 = 0; r2 < j; ++r2) {
        const rv = right[r2 + 1];
        const lv = left[j - r2];
        ndu[j][r2] = rv + lv;
        const temp = ndu[r2][j - 1] / ndu[j][r2];
        ndu[r2][j] = saved + rv * temp;
        saved = lv * temp;
      }
      ndu[j][j] = saved;
    }
    for (let j = 0; j <= p; ++j) {
      ders[0][j] = ndu[j][p];
    }
    for (let r2 = 0; r2 <= p; ++r2) {
      let s1 = 0;
      let s2 = 1;
      const a = [];
      for (let i = 0; i <= p; ++i) {
        a[i] = zeroArr.slice(0);
      }
      a[0][0] = 1;
      for (let k = 1; k <= n; ++k) {
        let d = 0;
        const rk = r2 - k;
        const pk = p - k;
        if (r2 >= k) {
          a[s2][0] = a[s1][0] / ndu[pk + 1][rk];
          d = a[s2][0] * ndu[rk][pk];
        }
        const j1 = rk >= -1 ? 1 : -rk;
        const j2 = r2 - 1 <= pk ? k - 1 : p - r2;
        for (let j3 = j1; j3 <= j2; ++j3) {
          a[s2][j3] = (a[s1][j3] - a[s1][j3 - 1]) / ndu[pk + 1][rk + j3];
          d += a[s2][j3] * ndu[rk + j3][pk];
        }
        if (r2 <= pk) {
          a[s2][k] = -a[s1][k - 1] / ndu[pk + 1][r2];
          d += a[s2][k] * ndu[r2][pk];
        }
        ders[k][r2] = d;
        const j = s1;
        s1 = s2;
        s2 = j;
      }
    }
    let r = p;
    for (let k = 1; k <= n; ++k) {
      for (let j = 0; j <= p; ++j) {
        ders[k][j] *= r;
      }
      r *= p - k;
    }
    return ders;
  }
  function calcBSplineDerivatives(p, U, P, u, nd) {
    const du = nd < p ? nd : p;
    const CK = [];
    const span = findSpan(p, u, U);
    const nders = calcBasisFunctionDerivatives(span, u, p, du, U);
    const Pw = [];
    for (let i = 0; i < P.length; ++i) {
      const point = P[i].clone();
      const w = point.w;
      point.x *= w;
      point.y *= w;
      point.z *= w;
      Pw[i] = point;
    }
    for (let k = 0; k <= du; ++k) {
      const point = Pw[span - p].clone().multiplyScalar(nders[k][0]);
      for (let j = 1; j <= p; ++j) {
        point.add(Pw[span - p + j].clone().multiplyScalar(nders[k][j]));
      }
      CK[k] = point;
    }
    for (let k = du + 1; k <= nd + 1; ++k) {
      CK[k] = new Vector4(0, 0, 0);
    }
    return CK;
  }
  function calcKoverI(k, i) {
    let nom = 1;
    for (let j = 2; j <= k; ++j) {
      nom *= j;
    }
    let denom = 1;
    for (let j = 2; j <= i; ++j) {
      denom *= j;
    }
    for (let j = 2; j <= k - i; ++j) {
      denom *= j;
    }
    return nom / denom;
  }
  function calcRationalCurveDerivatives(Pders) {
    const nd = Pders.length;
    const Aders = [];
    const wders = [];
    for (let i = 0; i < nd; ++i) {
      const point = Pders[i];
      Aders[i] = new Vector3(point.x, point.y, point.z);
      wders[i] = point.w;
    }
    const CK = [];
    for (let k = 0; k < nd; ++k) {
      const v = Aders[k].clone();
      for (let i = 1; i <= k; ++i) {
        v.sub(CK[k - i].clone().multiplyScalar(calcKoverI(k, i) * wders[i]));
      }
      CK[k] = v.divideScalar(wders[0]);
    }
    return CK;
  }
  function calcNURBSDerivatives(p, U, P, u, nd) {
    const Pders = calcBSplineDerivatives(p, U, P, u, nd);
    return calcRationalCurveDerivatives(Pders);
  }

  // examples/jsm/curves/NURBSCurve.js
  var NURBSCurve = class extends Curve {
    constructor(degree, knots, controlPoints, startKnot, endKnot) {
      super();
      this.degree = degree;
      this.knots = knots;
      this.controlPoints = [];
      this.startKnot = startKnot || 0;
      this.endKnot = endKnot || this.knots.length - 1;
      for (let i = 0; i < controlPoints.length; ++i) {
        const point = controlPoints[i];
        this.controlPoints[i] = new Vector4(point.x, point.y, point.z, point.w);
      }
    }
    getPoint(t, optionalTarget = new Vector3()) {
      const point = optionalTarget;
      const u = this.knots[this.startKnot] + t * (this.knots[this.endKnot] - this.knots[this.startKnot]);
      const hpoint = calcBSplinePoint(this.degree, this.knots, this.controlPoints, u);
      if (hpoint.w !== 1) {
        hpoint.divideScalar(hpoint.w);
      }
      return point.set(hpoint.x, hpoint.y, hpoint.z);
    }
    getTangent(t, optionalTarget = new Vector3()) {
      const tangent = optionalTarget;
      const u = this.knots[0] + t * (this.knots[this.knots.length - 1] - this.knots[0]);
      const ders = calcNURBSDerivatives(this.degree, this.knots, this.controlPoints, u, 1);
      tangent.copy(ders[1]).normalize();
      return tangent;
    }
  };

  // examples/jsm/loaders/FBXLoader.js
  var fbxTree;
  var connections;
  var sceneGraph;
  var FBXLoader = class extends Loader {
    constructor(manager) {
      super(manager);
    }
    load(url, onLoad, onProgress, onError) {
      const scope = this;
      const path = scope.path === "" ? LoaderUtils.extractUrlBase(url) : scope.path;
      const loader = new FileLoader(this.manager);
      loader.setPath(scope.path);
      loader.setResponseType("arraybuffer");
      loader.setRequestHeader(scope.requestHeader);
      loader.setWithCredentials(scope.withCredentials);
      loader.load(url, function(buffer) {
        try {
          onLoad(scope.parse(buffer, path));
        } catch (e) {
          if (onError) {
            onError(e);
          } else {
            console.error(e);
          }
          scope.manager.itemError(url);
        }
      }, onProgress, onError);
    }
    parse(FBXBuffer, path) {
      if (isFbxFormatBinary(FBXBuffer)) {
        fbxTree = new BinaryParser().parse(FBXBuffer);
      } else {
        const FBXText = convertArrayBufferToString(FBXBuffer);
        if (!isFbxFormatASCII(FBXText)) {
          throw new Error("THREE.FBXLoader: Unknown format.");
        }
        if (getFbxVersion(FBXText) < 7e3) {
          throw new Error("THREE.FBXLoader: FBX version not supported, FileVersion: " + getFbxVersion(FBXText));
        }
        fbxTree = new TextParser().parse(FBXText);
      }
      const textureLoader = new TextureLoader(this.manager).setPath(this.resourcePath || path).setCrossOrigin(this.crossOrigin);
      return new FBXTreeParser(textureLoader, this.manager).parse(fbxTree);
    }
  };
  var FBXTreeParser = class {
    constructor(textureLoader, manager) {
      this.textureLoader = textureLoader;
      this.manager = manager;
    }
    parse() {
      connections = this.parseConnections();
      const images = this.parseImages();
      const textures = this.parseTextures(images);
      const materials = this.parseMaterials(textures);
      const deformers = this.parseDeformers();
      const geometryMap = new GeometryParser().parse(deformers);
      this.parseScene(deformers, geometryMap, materials);
      return sceneGraph;
    }
    // Parses FBXTree.Connections which holds parent-child connections between objects (e.g. material -> texture, model->geometry )
    // and details the connection type
    parseConnections() {
      const connectionMap = /* @__PURE__ */ new Map();
      if ("Connections" in fbxTree) {
        const rawConnections = fbxTree.Connections.connections;
        rawConnections.forEach(function(rawConnection) {
          const fromID = rawConnection[0];
          const toID = rawConnection[1];
          const relationship = rawConnection[2];
          if (!connectionMap.has(fromID)) {
            connectionMap.set(fromID, {
              parents: [],
              children: []
            });
          }
          const parentRelationship = { ID: toID, relationship };
          connectionMap.get(fromID).parents.push(parentRelationship);
          if (!connectionMap.has(toID)) {
            connectionMap.set(toID, {
              parents: [],
              children: []
            });
          }
          const childRelationship = { ID: fromID, relationship };
          connectionMap.get(toID).children.push(childRelationship);
        });
      }
      return connectionMap;
    }
    // Parse FBXTree.Objects.Video for embedded image data
    // These images are connected to textures in FBXTree.Objects.Textures
    // via FBXTree.Connections.
    parseImages() {
      const images = {};
      const blobs = {};
      if ("Video" in fbxTree.Objects) {
        const videoNodes = fbxTree.Objects.Video;
        for (const nodeID in videoNodes) {
          const videoNode = videoNodes[nodeID];
          const id = parseInt(nodeID);
          images[id] = videoNode.RelativeFilename || videoNode.Filename;
          if ("Content" in videoNode) {
            const arrayBufferContent = videoNode.Content instanceof ArrayBuffer && videoNode.Content.byteLength > 0;
            const base64Content = typeof videoNode.Content === "string" && videoNode.Content !== "";
            if (arrayBufferContent || base64Content) {
              const image = this.parseImage(videoNodes[nodeID]);
              blobs[videoNode.RelativeFilename || videoNode.Filename] = image;
            }
          }
        }
      }
      for (const id in images) {
        const filename = images[id];
        if (blobs[filename] !== void 0) images[id] = blobs[filename];
        else images[id] = images[id].split("\\").pop();
      }
      return images;
    }
    // Parse embedded image data in FBXTree.Video.Content
    parseImage(videoNode) {
      const content = videoNode.Content;
      const fileName = videoNode.RelativeFilename || videoNode.Filename;
      const extension = fileName.slice(fileName.lastIndexOf(".") + 1).toLowerCase();
      let type;
      switch (extension) {
        case "bmp":
          type = "image/bmp";
          break;
        case "jpg":
        case "jpeg":
          type = "image/jpeg";
          break;
        case "png":
          type = "image/png";
          break;
        case "tif":
          type = "image/tiff";
          break;
        case "tga":
          if (this.manager.getHandler(".tga") === null) {
            console.warn("FBXLoader: TGA loader not found, skipping ", fileName);
          }
          type = "image/tga";
          break;
        default:
          console.warn('FBXLoader: Image type "' + extension + '" is not supported.');
          return;
      }
      if (typeof content === "string") {
        return "data:" + type + ";base64," + content;
      } else {
        const array = new Uint8Array(content);
        return window.URL.createObjectURL(new Blob([array], { type }));
      }
    }
    // Parse nodes in FBXTree.Objects.Texture
    // These contain details such as UV scaling, cropping, rotation etc and are connected
    // to images in FBXTree.Objects.Video
    parseTextures(images) {
      const textureMap = /* @__PURE__ */ new Map();
      if ("Texture" in fbxTree.Objects) {
        const textureNodes = fbxTree.Objects.Texture;
        for (const nodeID in textureNodes) {
          const texture = this.parseTexture(textureNodes[nodeID], images);
          textureMap.set(parseInt(nodeID), texture);
        }
      }
      return textureMap;
    }
    // Parse individual node in FBXTree.Objects.Texture
    parseTexture(textureNode, images) {
      const texture = this.loadTexture(textureNode, images);
      texture.ID = textureNode.id;
      texture.name = textureNode.attrName;
      const wrapModeU = textureNode.WrapModeU;
      const wrapModeV = textureNode.WrapModeV;
      const valueU = wrapModeU !== void 0 ? wrapModeU.value : 0;
      const valueV = wrapModeV !== void 0 ? wrapModeV.value : 0;
      texture.wrapS = valueU === 0 ? RepeatWrapping : ClampToEdgeWrapping;
      texture.wrapT = valueV === 0 ? RepeatWrapping : ClampToEdgeWrapping;
      if ("Scaling" in textureNode) {
        const values = textureNode.Scaling.value;
        texture.repeat.x = values[0];
        texture.repeat.y = values[1];
      }
      if ("Translation" in textureNode) {
        const values = textureNode.Translation.value;
        texture.offset.x = values[0];
        texture.offset.y = values[1];
      }
      return texture;
    }
    // load a texture specified as a blob or data URI, or via an external URL using TextureLoader
    loadTexture(textureNode, images) {
      let fileName;
      const currentPath = this.textureLoader.path;
      const children = connections.get(textureNode.id).children;
      if (children !== void 0 && children.length > 0 && images[children[0].ID] !== void 0) {
        fileName = images[children[0].ID];
        if (fileName.indexOf("blob:") === 0 || fileName.indexOf("data:") === 0) {
          this.textureLoader.setPath(void 0);
        }
      }
      let texture;
      const extension = textureNode.FileName.slice(-3).toLowerCase();
      if (extension === "tga") {
        const loader = this.manager.getHandler(".tga");
        if (loader === null) {
          console.warn("FBXLoader: TGA loader not found, creating placeholder texture for", textureNode.RelativeFilename);
          texture = new Texture();
        } else {
          loader.setPath(this.textureLoader.path);
          texture = loader.load(fileName);
        }
      } else if (extension === "dds") {
        const loader = this.manager.getHandler(".dds");
        if (loader === null) {
          console.warn("FBXLoader: DDS loader not found, creating placeholder texture for", textureNode.RelativeFilename);
          texture = new Texture();
        } else {
          loader.setPath(this.textureLoader.path);
          texture = loader.load(fileName);
        }
      } else if (extension === "psd") {
        console.warn("FBXLoader: PSD textures are not supported, creating placeholder texture for", textureNode.RelativeFilename);
        texture = new Texture();
      } else {
        texture = this.textureLoader.load(fileName);
      }
      this.textureLoader.setPath(currentPath);
      return texture;
    }
    // Parse nodes in FBXTree.Objects.Material
    parseMaterials(textureMap) {
      const materialMap = /* @__PURE__ */ new Map();
      if ("Material" in fbxTree.Objects) {
        const materialNodes = fbxTree.Objects.Material;
        for (const nodeID in materialNodes) {
          const material = this.parseMaterial(materialNodes[nodeID], textureMap);
          if (material !== null) materialMap.set(parseInt(nodeID), material);
        }
      }
      return materialMap;
    }
    // Parse single node in FBXTree.Objects.Material
    // Materials are connected to texture maps in FBXTree.Objects.Textures
    // FBX format currently only supports Lambert and Phong shading models
    parseMaterial(materialNode, textureMap) {
      const ID = materialNode.id;
      const name = materialNode.attrName;
      let type = materialNode.ShadingModel;
      if (typeof type === "object") {
        type = type.value;
      }
      if (!connections.has(ID)) return null;
      const parameters = this.parseParameters(materialNode, textureMap, ID);
      let material;
      switch (type.toLowerCase()) {
        case "phong":
          material = new MeshPhongMaterial();
          break;
        case "lambert":
          material = new MeshLambertMaterial();
          break;
        default:
          console.warn('THREE.FBXLoader: unknown material type "%s". Defaulting to MeshPhongMaterial.', type);
          material = new MeshPhongMaterial();
          break;
      }
      material.setValues(parameters);
      material.name = name;
      return material;
    }
    // Parse FBX material and return parameters suitable for a three.js material
    // Also parse the texture map and return any textures associated with the material
    parseParameters(materialNode, textureMap, ID) {
      const parameters = {};
      if (materialNode.BumpFactor) {
        parameters.bumpScale = materialNode.BumpFactor.value;
      }
      if (materialNode.Diffuse) {
        parameters.color = new Color().fromArray(materialNode.Diffuse.value).convertSRGBToLinear();
      } else if (materialNode.DiffuseColor && (materialNode.DiffuseColor.type === "Color" || materialNode.DiffuseColor.type === "ColorRGB")) {
        parameters.color = new Color().fromArray(materialNode.DiffuseColor.value).convertSRGBToLinear();
      }
      if (materialNode.DisplacementFactor) {
        parameters.displacementScale = materialNode.DisplacementFactor.value;
      }
      if (materialNode.Emissive) {
        parameters.emissive = new Color().fromArray(materialNode.Emissive.value).convertSRGBToLinear();
      } else if (materialNode.EmissiveColor && (materialNode.EmissiveColor.type === "Color" || materialNode.EmissiveColor.type === "ColorRGB")) {
        parameters.emissive = new Color().fromArray(materialNode.EmissiveColor.value).convertSRGBToLinear();
      }
      if (materialNode.EmissiveFactor) {
        parameters.emissiveIntensity = parseFloat(materialNode.EmissiveFactor.value);
      }
      if (materialNode.Opacity) {
        parameters.opacity = parseFloat(materialNode.Opacity.value);
      }
      if (parameters.opacity < 1) {
        parameters.transparent = true;
      }
      if (materialNode.ReflectionFactor) {
        parameters.reflectivity = materialNode.ReflectionFactor.value;
      }
      if (materialNode.Shininess) {
        parameters.shininess = materialNode.Shininess.value;
      }
      if (materialNode.Specular) {
        parameters.specular = new Color().fromArray(materialNode.Specular.value).convertSRGBToLinear();
      } else if (materialNode.SpecularColor && materialNode.SpecularColor.type === "Color") {
        parameters.specular = new Color().fromArray(materialNode.SpecularColor.value).convertSRGBToLinear();
      }
      const scope = this;
      connections.get(ID).children.forEach(function(child) {
        const type = child.relationship;
        switch (type) {
          case "Bump":
            parameters.bumpMap = scope.getTexture(textureMap, child.ID);
            break;
          case "Maya|TEX_ao_map":
            parameters.aoMap = scope.getTexture(textureMap, child.ID);
            break;
          case "DiffuseColor":
          case "Maya|TEX_color_map":
            parameters.map = scope.getTexture(textureMap, child.ID);
            if (parameters.map !== void 0) {
              parameters.map.colorSpace = SRGBColorSpace;
            }
            break;
          case "DisplacementColor":
            parameters.displacementMap = scope.getTexture(textureMap, child.ID);
            break;
          case "EmissiveColor":
            parameters.emissiveMap = scope.getTexture(textureMap, child.ID);
            if (parameters.emissiveMap !== void 0) {
              parameters.emissiveMap.colorSpace = SRGBColorSpace;
            }
            break;
          case "NormalMap":
          case "Maya|TEX_normal_map":
            parameters.normalMap = scope.getTexture(textureMap, child.ID);
            break;
          case "ReflectionColor":
            parameters.envMap = scope.getTexture(textureMap, child.ID);
            if (parameters.envMap !== void 0) {
              parameters.envMap.mapping = EquirectangularReflectionMapping;
              parameters.envMap.colorSpace = SRGBColorSpace;
            }
            break;
          case "SpecularColor":
            parameters.specularMap = scope.getTexture(textureMap, child.ID);
            if (parameters.specularMap !== void 0) {
              parameters.specularMap.colorSpace = SRGBColorSpace;
            }
            break;
          case "TransparentColor":
          case "TransparencyFactor":
            parameters.alphaMap = scope.getTexture(textureMap, child.ID);
            parameters.transparent = true;
            break;
          case "AmbientColor":
          case "ShininessExponent":
          // AKA glossiness map
          case "SpecularFactor":
          // AKA specularLevel
          case "VectorDisplacementColor":
          // NOTE: Seems to be a copy of DisplacementColor
          default:
            console.warn("THREE.FBXLoader: %s map is not supported in three.js, skipping texture.", type);
            break;
        }
      });
      return parameters;
    }
    // get a texture from the textureMap for use by a material.
    getTexture(textureMap, id) {
      if ("LayeredTexture" in fbxTree.Objects && id in fbxTree.Objects.LayeredTexture) {
        console.warn("THREE.FBXLoader: layered textures are not supported in three.js. Discarding all but first layer.");
        id = connections.get(id).children[0].ID;
      }
      return textureMap.get(id);
    }
    // Parse nodes in FBXTree.Objects.Deformer
    // Deformer node can contain skinning or Vertex Cache animation data, however only skinning is supported here
    // Generates map of Skeleton-like objects for use later when generating and binding skeletons.
    parseDeformers() {
      const skeletons = {};
      const morphTargets = {};
      if ("Deformer" in fbxTree.Objects) {
        const DeformerNodes = fbxTree.Objects.Deformer;
        for (const nodeID in DeformerNodes) {
          const deformerNode = DeformerNodes[nodeID];
          const relationships = connections.get(parseInt(nodeID));
          if (deformerNode.attrType === "Skin") {
            const skeleton = this.parseSkeleton(relationships, DeformerNodes);
            skeleton.ID = nodeID;
            if (relationships.parents.length > 1) console.warn("THREE.FBXLoader: skeleton attached to more than one geometry is not supported.");
            skeleton.geometryID = relationships.parents[0].ID;
            skeletons[nodeID] = skeleton;
          } else if (deformerNode.attrType === "BlendShape") {
            const morphTarget = {
              id: nodeID
            };
            morphTarget.rawTargets = this.parseMorphTargets(relationships, DeformerNodes);
            morphTarget.id = nodeID;
            if (relationships.parents.length > 1) console.warn("THREE.FBXLoader: morph target attached to more than one geometry is not supported.");
            morphTargets[nodeID] = morphTarget;
          }
        }
      }
      return {
        skeletons,
        morphTargets
      };
    }
    // Parse single nodes in FBXTree.Objects.Deformer
    // The top level skeleton node has type 'Skin' and sub nodes have type 'Cluster'
    // Each skin node represents a skeleton and each cluster node represents a bone
    parseSkeleton(relationships, deformerNodes) {
      const rawBones = [];
      relationships.children.forEach(function(child) {
        const boneNode = deformerNodes[child.ID];
        if (boneNode.attrType !== "Cluster") return;
        const rawBone = {
          ID: child.ID,
          indices: [],
          weights: [],
          transformLink: new Matrix4().fromArray(boneNode.TransformLink.a)
          // transform: new Matrix4().fromArray( boneNode.Transform.a ),
          // linkMode: boneNode.Mode,
        };
        if ("Indexes" in boneNode) {
          rawBone.indices = boneNode.Indexes.a;
          rawBone.weights = boneNode.Weights.a;
        }
        rawBones.push(rawBone);
      });
      return {
        rawBones,
        bones: []
      };
    }
    // The top level morph deformer node has type "BlendShape" and sub nodes have type "BlendShapeChannel"
    parseMorphTargets(relationships, deformerNodes) {
      const rawMorphTargets = [];
      for (let i = 0; i < relationships.children.length; i++) {
        const child = relationships.children[i];
        const morphTargetNode = deformerNodes[child.ID];
        const rawMorphTarget = {
          name: morphTargetNode.attrName,
          initialWeight: morphTargetNode.DeformPercent,
          id: morphTargetNode.id,
          fullWeights: morphTargetNode.FullWeights.a
        };
        if (morphTargetNode.attrType !== "BlendShapeChannel") return;
        rawMorphTarget.geoID = connections.get(parseInt(child.ID)).children.filter(function(child2) {
          return child2.relationship === void 0;
        })[0].ID;
        rawMorphTargets.push(rawMorphTarget);
      }
      return rawMorphTargets;
    }
    // create the main Group() to be returned by the loader
    parseScene(deformers, geometryMap, materialMap) {
      sceneGraph = new Group();
      const modelMap = this.parseModels(deformers.skeletons, geometryMap, materialMap);
      const modelNodes = fbxTree.Objects.Model;
      const scope = this;
      modelMap.forEach(function(model) {
        const modelNode = modelNodes[model.ID];
        scope.setLookAtProperties(model, modelNode);
        const parentConnections = connections.get(model.ID).parents;
        parentConnections.forEach(function(connection) {
          const parent = modelMap.get(connection.ID);
          if (parent !== void 0) parent.add(model);
        });
        if (model.parent === null) {
          sceneGraph.add(model);
        }
      });
      this.bindSkeleton(deformers.skeletons, geometryMap, modelMap);
      this.addGlobalSceneSettings();
      sceneGraph.traverse(function(node) {
        if (node.userData.transformData) {
          if (node.parent) {
            node.userData.transformData.parentMatrix = node.parent.matrix;
            node.userData.transformData.parentMatrixWorld = node.parent.matrixWorld;
          }
          const transform = generateTransform(node.userData.transformData);
          node.applyMatrix4(transform);
          node.updateWorldMatrix();
        }
      });
      const animations = new AnimationParser().parse();
      if (sceneGraph.children.length === 1 && sceneGraph.children[0].isGroup) {
        sceneGraph.children[0].animations = animations;
        sceneGraph = sceneGraph.children[0];
      }
      sceneGraph.animations = animations;
    }
    // parse nodes in FBXTree.Objects.Model
    parseModels(skeletons, geometryMap, materialMap) {
      const modelMap = /* @__PURE__ */ new Map();
      const modelNodes = fbxTree.Objects.Model;
      for (const nodeID in modelNodes) {
        const id = parseInt(nodeID);
        const node = modelNodes[nodeID];
        const relationships = connections.get(id);
        let model = this.buildSkeleton(relationships, skeletons, id, node.attrName);
        if (!model) {
          switch (node.attrType) {
            case "Camera":
              model = this.createCamera(relationships);
              break;
            case "Light":
              model = this.createLight(relationships);
              break;
            case "Mesh":
              model = this.createMesh(relationships, geometryMap, materialMap);
              break;
            case "NurbsCurve":
              model = this.createCurve(relationships, geometryMap);
              break;
            case "LimbNode":
            case "Root":
              model = new Bone();
              break;
            case "Null":
            default:
              model = new Group();
              break;
          }
          model.name = node.attrName ? PropertyBinding.sanitizeNodeName(node.attrName) : "";
          model.userData.originalName = node.attrName;
          model.ID = id;
        }
        this.getTransformData(model, node);
        modelMap.set(id, model);
      }
      return modelMap;
    }
    buildSkeleton(relationships, skeletons, id, name) {
      let bone = null;
      relationships.parents.forEach(function(parent) {
        for (const ID in skeletons) {
          const skeleton = skeletons[ID];
          skeleton.rawBones.forEach(function(rawBone, i) {
            if (rawBone.ID === parent.ID) {
              const subBone = bone;
              bone = new Bone();
              bone.matrixWorld.copy(rawBone.transformLink);
              bone.name = name ? PropertyBinding.sanitizeNodeName(name) : "";
              bone.userData.originalName = name;
              bone.ID = id;
              skeleton.bones[i] = bone;
              if (subBone !== null) {
                bone.add(subBone);
              }
            }
          });
        }
      });
      return bone;
    }
    // create a PerspectiveCamera or OrthographicCamera
    createCamera(relationships) {
      let model;
      let cameraAttribute;
      relationships.children.forEach(function(child) {
        const attr = fbxTree.Objects.NodeAttribute[child.ID];
        if (attr !== void 0) {
          cameraAttribute = attr;
        }
      });
      if (cameraAttribute === void 0) {
        model = new Object3D();
      } else {
        let type = 0;
        if (cameraAttribute.CameraProjectionType !== void 0 && cameraAttribute.CameraProjectionType.value === 1) {
          type = 1;
        }
        let nearClippingPlane = 1;
        if (cameraAttribute.NearPlane !== void 0) {
          nearClippingPlane = cameraAttribute.NearPlane.value / 1e3;
        }
        let farClippingPlane = 1e3;
        if (cameraAttribute.FarPlane !== void 0) {
          farClippingPlane = cameraAttribute.FarPlane.value / 1e3;
        }
        let width = window.innerWidth;
        let height = window.innerHeight;
        if (cameraAttribute.AspectWidth !== void 0 && cameraAttribute.AspectHeight !== void 0) {
          width = cameraAttribute.AspectWidth.value;
          height = cameraAttribute.AspectHeight.value;
        }
        const aspect2 = width / height;
        let fov2 = 45;
        if (cameraAttribute.FieldOfView !== void 0) {
          fov2 = cameraAttribute.FieldOfView.value;
        }
        const focalLength = cameraAttribute.FocalLength ? cameraAttribute.FocalLength.value : null;
        switch (type) {
          case 0:
            model = new PerspectiveCamera(fov2, aspect2, nearClippingPlane, farClippingPlane);
            if (focalLength !== null) model.setFocalLength(focalLength);
            break;
          case 1:
            model = new OrthographicCamera(-width / 2, width / 2, height / 2, -height / 2, nearClippingPlane, farClippingPlane);
            break;
          default:
            console.warn("THREE.FBXLoader: Unknown camera type " + type + ".");
            model = new Object3D();
            break;
        }
      }
      return model;
    }
    // Create a DirectionalLight, PointLight or SpotLight
    createLight(relationships) {
      let model;
      let lightAttribute;
      relationships.children.forEach(function(child) {
        const attr = fbxTree.Objects.NodeAttribute[child.ID];
        if (attr !== void 0) {
          lightAttribute = attr;
        }
      });
      if (lightAttribute === void 0) {
        model = new Object3D();
      } else {
        let type;
        if (lightAttribute.LightType === void 0) {
          type = 0;
        } else {
          type = lightAttribute.LightType.value;
        }
        let color = 16777215;
        if (lightAttribute.Color !== void 0) {
          color = new Color().fromArray(lightAttribute.Color.value).convertSRGBToLinear();
        }
        let intensity = lightAttribute.Intensity === void 0 ? 1 : lightAttribute.Intensity.value / 100;
        if (lightAttribute.CastLightOnObject !== void 0 && lightAttribute.CastLightOnObject.value === 0) {
          intensity = 0;
        }
        let distance = 0;
        if (lightAttribute.FarAttenuationEnd !== void 0) {
          if (lightAttribute.EnableFarAttenuation !== void 0 && lightAttribute.EnableFarAttenuation.value === 0) {
            distance = 0;
          } else {
            distance = lightAttribute.FarAttenuationEnd.value;
          }
        }
        const decay = 1;
        switch (type) {
          case 0:
            model = new PointLight(color, intensity, distance, decay);
            break;
          case 1:
            model = new DirectionalLight(color, intensity);
            break;
          case 2:
            let angle = Math.PI / 3;
            if (lightAttribute.InnerAngle !== void 0) {
              angle = MathUtils.degToRad(lightAttribute.InnerAngle.value);
            }
            let penumbra = 0;
            if (lightAttribute.OuterAngle !== void 0) {
              penumbra = MathUtils.degToRad(lightAttribute.OuterAngle.value);
              penumbra = Math.max(penumbra, 1);
            }
            model = new SpotLight(color, intensity, distance, angle, penumbra, decay);
            break;
          default:
            console.warn("THREE.FBXLoader: Unknown light type " + lightAttribute.LightType.value + ", defaulting to a PointLight.");
            model = new PointLight(color, intensity);
            break;
        }
        if (lightAttribute.CastShadows !== void 0 && lightAttribute.CastShadows.value === 1) {
          model.castShadow = true;
        }
      }
      return model;
    }
    createMesh(relationships, geometryMap, materialMap) {
      let model;
      let geometry = null;
      let material = null;
      const materials = [];
      relationships.children.forEach(function(child) {
        if (geometryMap.has(child.ID)) {
          geometry = geometryMap.get(child.ID);
        }
        if (materialMap.has(child.ID)) {
          materials.push(materialMap.get(child.ID));
        }
      });
      if (materials.length > 1) {
        material = materials;
      } else if (materials.length > 0) {
        material = materials[0];
      } else {
        material = new MeshPhongMaterial({
          name: Loader.DEFAULT_MATERIAL_NAME,
          color: 13421772
        });
        materials.push(material);
      }
      if ("color" in geometry.attributes) {
        materials.forEach(function(material2) {
          material2.vertexColors = true;
        });
      }
      if (geometry.FBX_Deformer) {
        model = new SkinnedMesh(geometry, material);
        model.normalizeSkinWeights();
      } else {
        model = new Mesh(geometry, material);
      }
      return model;
    }
    createCurve(relationships, geometryMap) {
      const geometry = relationships.children.reduce(function(geo, child) {
        if (geometryMap.has(child.ID)) geo = geometryMap.get(child.ID);
        return geo;
      }, null);
      const material = new LineBasicMaterial({
        name: Loader.DEFAULT_MATERIAL_NAME,
        color: 3342591,
        linewidth: 1
      });
      return new Line(geometry, material);
    }
    // parse the model node for transform data
    getTransformData(model, modelNode) {
      const transformData = {};
      if ("InheritType" in modelNode) transformData.inheritType = parseInt(modelNode.InheritType.value);
      if ("RotationOrder" in modelNode) transformData.eulerOrder = getEulerOrder(modelNode.RotationOrder.value);
      else transformData.eulerOrder = "ZYX";
      if ("Lcl_Translation" in modelNode) transformData.translation = modelNode.Lcl_Translation.value;
      if ("PreRotation" in modelNode) transformData.preRotation = modelNode.PreRotation.value;
      if ("Lcl_Rotation" in modelNode) transformData.rotation = modelNode.Lcl_Rotation.value;
      if ("PostRotation" in modelNode) transformData.postRotation = modelNode.PostRotation.value;
      if ("Lcl_Scaling" in modelNode) transformData.scale = modelNode.Lcl_Scaling.value;
      if ("ScalingOffset" in modelNode) transformData.scalingOffset = modelNode.ScalingOffset.value;
      if ("ScalingPivot" in modelNode) transformData.scalingPivot = modelNode.ScalingPivot.value;
      if ("RotationOffset" in modelNode) transformData.rotationOffset = modelNode.RotationOffset.value;
      if ("RotationPivot" in modelNode) transformData.rotationPivot = modelNode.RotationPivot.value;
      model.userData.transformData = transformData;
    }
    setLookAtProperties(model, modelNode) {
      if ("LookAtProperty" in modelNode) {
        const children = connections.get(model.ID).children;
        children.forEach(function(child) {
          if (child.relationship === "LookAtProperty") {
            const lookAtTarget = fbxTree.Objects.Model[child.ID];
            if ("Lcl_Translation" in lookAtTarget) {
              const pos = lookAtTarget.Lcl_Translation.value;
              if (model.target !== void 0) {
                model.target.position.fromArray(pos);
                sceneGraph.add(model.target);
              } else {
                model.lookAt(new Vector3().fromArray(pos));
              }
            }
          }
        });
      }
    }
    bindSkeleton(skeletons, geometryMap, modelMap) {
      const bindMatrices = this.parsePoseNodes();
      for (const ID in skeletons) {
        const skeleton = skeletons[ID];
        const parents = connections.get(parseInt(skeleton.ID)).parents;
        parents.forEach(function(parent) {
          if (geometryMap.has(parent.ID)) {
            const geoID = parent.ID;
            const geoRelationships = connections.get(geoID);
            geoRelationships.parents.forEach(function(geoConnParent) {
              if (modelMap.has(geoConnParent.ID)) {
                const model = modelMap.get(geoConnParent.ID);
                model.bind(new Skeleton(skeleton.bones), bindMatrices[geoConnParent.ID]);
              }
            });
          }
        });
      }
    }
    parsePoseNodes() {
      const bindMatrices = {};
      if ("Pose" in fbxTree.Objects) {
        const BindPoseNode = fbxTree.Objects.Pose;
        for (const nodeID in BindPoseNode) {
          if (BindPoseNode[nodeID].attrType === "BindPose" && BindPoseNode[nodeID].NbPoseNodes > 0) {
            const poseNodes = BindPoseNode[nodeID].PoseNode;
            if (Array.isArray(poseNodes)) {
              poseNodes.forEach(function(poseNode) {
                bindMatrices[poseNode.Node] = new Matrix4().fromArray(poseNode.Matrix.a);
              });
            } else {
              bindMatrices[poseNodes.Node] = new Matrix4().fromArray(poseNodes.Matrix.a);
            }
          }
        }
      }
      return bindMatrices;
    }
    addGlobalSceneSettings() {
      if ("GlobalSettings" in fbxTree) {
        if ("AmbientColor" in fbxTree.GlobalSettings) {
          const ambientColor = fbxTree.GlobalSettings.AmbientColor.value;
          const r = ambientColor[0];
          const g = ambientColor[1];
          const b = ambientColor[2];
          if (r !== 0 || g !== 0 || b !== 0) {
            const color = new Color(r, g, b).convertSRGBToLinear();
            sceneGraph.add(new AmbientLight(color, 1));
          }
        }
        if ("UnitScaleFactor" in fbxTree.GlobalSettings) {
          sceneGraph.userData.unitScaleFactor = fbxTree.GlobalSettings.UnitScaleFactor.value;
        }
      }
    }
  };
  var GeometryParser = class {
    constructor() {
      this.negativeMaterialIndices = false;
    }
    // Parse nodes in FBXTree.Objects.Geometry
    parse(deformers) {
      const geometryMap = /* @__PURE__ */ new Map();
      if ("Geometry" in fbxTree.Objects) {
        const geoNodes = fbxTree.Objects.Geometry;
        for (const nodeID in geoNodes) {
          const relationships = connections.get(parseInt(nodeID));
          const geo = this.parseGeometry(relationships, geoNodes[nodeID], deformers);
          geometryMap.set(parseInt(nodeID), geo);
        }
      }
      if (this.negativeMaterialIndices === true) {
        console.warn("THREE.FBXLoader: The FBX file contains invalid (negative) material indices. The asset might not render as expected.");
      }
      return geometryMap;
    }
    // Parse single node in FBXTree.Objects.Geometry
    parseGeometry(relationships, geoNode, deformers) {
      switch (geoNode.attrType) {
        case "Mesh":
          return this.parseMeshGeometry(relationships, geoNode, deformers);
          break;
        case "NurbsCurve":
          return this.parseNurbsGeometry(geoNode);
          break;
      }
    }
    // Parse single node mesh geometry in FBXTree.Objects.Geometry
    parseMeshGeometry(relationships, geoNode, deformers) {
      const skeletons = deformers.skeletons;
      const morphTargets = [];
      const modelNodes = relationships.parents.map(function(parent) {
        return fbxTree.Objects.Model[parent.ID];
      });
      if (modelNodes.length === 0) return;
      const skeleton = relationships.children.reduce(function(skeleton2, child) {
        if (skeletons[child.ID] !== void 0) skeleton2 = skeletons[child.ID];
        return skeleton2;
      }, null);
      relationships.children.forEach(function(child) {
        if (deformers.morphTargets[child.ID] !== void 0) {
          morphTargets.push(deformers.morphTargets[child.ID]);
        }
      });
      const modelNode = modelNodes[0];
      const transformData = {};
      if ("RotationOrder" in modelNode) transformData.eulerOrder = getEulerOrder(modelNode.RotationOrder.value);
      if ("InheritType" in modelNode) transformData.inheritType = parseInt(modelNode.InheritType.value);
      if ("GeometricTranslation" in modelNode) transformData.translation = modelNode.GeometricTranslation.value;
      if ("GeometricRotation" in modelNode) transformData.rotation = modelNode.GeometricRotation.value;
      if ("GeometricScaling" in modelNode) transformData.scale = modelNode.GeometricScaling.value;
      const transform = generateTransform(transformData);
      return this.genGeometry(geoNode, skeleton, morphTargets, transform);
    }
    // Generate a BufferGeometry from a node in FBXTree.Objects.Geometry
    genGeometry(geoNode, skeleton, morphTargets, preTransform) {
      const geo = new BufferGeometry();
      if (geoNode.attrName) geo.name = geoNode.attrName;
      const geoInfo = this.parseGeoNode(geoNode, skeleton);
      const buffers = this.genBuffers(geoInfo);
      const positionAttribute = new Float32BufferAttribute(buffers.vertex, 3);
      positionAttribute.applyMatrix4(preTransform);
      geo.setAttribute("position", positionAttribute);
      if (buffers.colors.length > 0) {
        geo.setAttribute("color", new Float32BufferAttribute(buffers.colors, 3));
      }
      if (skeleton) {
        geo.setAttribute("skinIndex", new Uint16BufferAttribute(buffers.weightsIndices, 4));
        geo.setAttribute("skinWeight", new Float32BufferAttribute(buffers.vertexWeights, 4));
        geo.FBX_Deformer = skeleton;
      }
      if (buffers.normal.length > 0) {
        const normalMatrix = new Matrix3().getNormalMatrix(preTransform);
        const normalAttribute = new Float32BufferAttribute(buffers.normal, 3);
        normalAttribute.applyNormalMatrix(normalMatrix);
        geo.setAttribute("normal", normalAttribute);
      }
      buffers.uvs.forEach(function(uvBuffer, i) {
        const name = i === 0 ? "uv" : `uv${i}`;
        geo.setAttribute(name, new Float32BufferAttribute(buffers.uvs[i], 2));
      });
      if (geoInfo.material && geoInfo.material.mappingType !== "AllSame") {
        let prevMaterialIndex = buffers.materialIndex[0];
        let startIndex = 0;
        buffers.materialIndex.forEach(function(currentIndex, i) {
          if (currentIndex !== prevMaterialIndex) {
            geo.addGroup(startIndex, i - startIndex, prevMaterialIndex);
            prevMaterialIndex = currentIndex;
            startIndex = i;
          }
        });
        if (geo.groups.length > 0) {
          const lastGroup = geo.groups[geo.groups.length - 1];
          const lastIndex = lastGroup.start + lastGroup.count;
          if (lastIndex !== buffers.materialIndex.length) {
            geo.addGroup(lastIndex, buffers.materialIndex.length - lastIndex, prevMaterialIndex);
          }
        }
        if (geo.groups.length === 0) {
          geo.addGroup(0, buffers.materialIndex.length, buffers.materialIndex[0]);
        }
      }
      this.addMorphTargets(geo, geoNode, morphTargets, preTransform);
      return geo;
    }
    parseGeoNode(geoNode, skeleton) {
      const geoInfo = {};
      geoInfo.vertexPositions = geoNode.Vertices !== void 0 ? geoNode.Vertices.a : [];
      geoInfo.vertexIndices = geoNode.PolygonVertexIndex !== void 0 ? geoNode.PolygonVertexIndex.a : [];
      if (geoNode.LayerElementColor) {
        geoInfo.color = this.parseVertexColors(geoNode.LayerElementColor[0]);
      }
      if (geoNode.LayerElementMaterial) {
        geoInfo.material = this.parseMaterialIndices(geoNode.LayerElementMaterial[0]);
      }
      if (geoNode.LayerElementNormal) {
        geoInfo.normal = this.parseNormals(geoNode.LayerElementNormal[0]);
      }
      if (geoNode.LayerElementUV) {
        geoInfo.uv = [];
        let i = 0;
        while (geoNode.LayerElementUV[i]) {
          if (geoNode.LayerElementUV[i].UV) {
            geoInfo.uv.push(this.parseUVs(geoNode.LayerElementUV[i]));
          }
          i++;
        }
      }
      geoInfo.weightTable = {};
      if (skeleton !== null) {
        geoInfo.skeleton = skeleton;
        skeleton.rawBones.forEach(function(rawBone, i) {
          rawBone.indices.forEach(function(index, j) {
            if (geoInfo.weightTable[index] === void 0) geoInfo.weightTable[index] = [];
            geoInfo.weightTable[index].push({
              id: i,
              weight: rawBone.weights[j]
            });
          });
        });
      }
      return geoInfo;
    }
    genBuffers(geoInfo) {
      const buffers = {
        vertex: [],
        normal: [],
        colors: [],
        uvs: [],
        materialIndex: [],
        vertexWeights: [],
        weightsIndices: []
      };
      let polygonIndex = 0;
      let faceLength = 0;
      let displayedWeightsWarning = false;
      let facePositionIndexes = [];
      let faceNormals = [];
      let faceColors = [];
      let faceUVs = [];
      let faceWeights = [];
      let faceWeightIndices = [];
      const scope = this;
      geoInfo.vertexIndices.forEach(function(vertexIndex, polygonVertexIndex) {
        let materialIndex;
        let endOfFace = false;
        if (vertexIndex < 0) {
          vertexIndex = vertexIndex ^ -1;
          endOfFace = true;
        }
        let weightIndices = [];
        let weights = [];
        facePositionIndexes.push(vertexIndex * 3, vertexIndex * 3 + 1, vertexIndex * 3 + 2);
        if (geoInfo.color) {
          const data = getData(polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.color);
          faceColors.push(data[0], data[1], data[2]);
        }
        if (geoInfo.skeleton) {
          if (geoInfo.weightTable[vertexIndex] !== void 0) {
            geoInfo.weightTable[vertexIndex].forEach(function(wt) {
              weights.push(wt.weight);
              weightIndices.push(wt.id);
            });
          }
          if (weights.length > 4) {
            if (!displayedWeightsWarning) {
              console.warn("THREE.FBXLoader: Vertex has more than 4 skinning weights assigned to vertex. Deleting additional weights.");
              displayedWeightsWarning = true;
            }
            const wIndex = [0, 0, 0, 0];
            const Weight = [0, 0, 0, 0];
            weights.forEach(function(weight, weightIndex) {
              let currentWeight = weight;
              let currentIndex = weightIndices[weightIndex];
              Weight.forEach(function(comparedWeight, comparedWeightIndex, comparedWeightArray) {
                if (currentWeight > comparedWeight) {
                  comparedWeightArray[comparedWeightIndex] = currentWeight;
                  currentWeight = comparedWeight;
                  const tmp2 = wIndex[comparedWeightIndex];
                  wIndex[comparedWeightIndex] = currentIndex;
                  currentIndex = tmp2;
                }
              });
            });
            weightIndices = wIndex;
            weights = Weight;
          }
          while (weights.length < 4) {
            weights.push(0);
            weightIndices.push(0);
          }
          for (let i = 0; i < 4; ++i) {
            faceWeights.push(weights[i]);
            faceWeightIndices.push(weightIndices[i]);
          }
        }
        if (geoInfo.normal) {
          const data = getData(polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.normal);
          faceNormals.push(data[0], data[1], data[2]);
        }
        if (geoInfo.material && geoInfo.material.mappingType !== "AllSame") {
          materialIndex = getData(polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.material)[0];
          if (materialIndex < 0) {
            scope.negativeMaterialIndices = true;
            materialIndex = 0;
          }
        }
        if (geoInfo.uv) {
          geoInfo.uv.forEach(function(uv, i) {
            const data = getData(polygonVertexIndex, polygonIndex, vertexIndex, uv);
            if (faceUVs[i] === void 0) {
              faceUVs[i] = [];
            }
            faceUVs[i].push(data[0]);
            faceUVs[i].push(data[1]);
          });
        }
        faceLength++;
        if (endOfFace) {
          scope.genFace(buffers, geoInfo, facePositionIndexes, materialIndex, faceNormals, faceColors, faceUVs, faceWeights, faceWeightIndices, faceLength);
          polygonIndex++;
          faceLength = 0;
          facePositionIndexes = [];
          faceNormals = [];
          faceColors = [];
          faceUVs = [];
          faceWeights = [];
          faceWeightIndices = [];
        }
      });
      return buffers;
    }
    // See https://www.khronos.org/opengl/wiki/Calculating_a_Surface_Normal
    getNormalNewell(vertices) {
      const normal = new Vector3(0, 0, 0);
      for (let i = 0; i < vertices.length; i++) {
        const current = vertices[i];
        const next = vertices[(i + 1) % vertices.length];
        normal.x += (current.y - next.y) * (current.z + next.z);
        normal.y += (current.z - next.z) * (current.x + next.x);
        normal.z += (current.x - next.x) * (current.y + next.y);
      }
      normal.normalize();
      return normal;
    }
    getNormalTangentAndBitangent(vertices) {
      const normalVector = this.getNormalNewell(vertices);
      const up = Math.abs(normalVector.z) > 0.5 ? new Vector3(0, 1, 0) : new Vector3(0, 0, 1);
      const tangent = up.cross(normalVector).normalize();
      const bitangent = normalVector.clone().cross(tangent).normalize();
      return {
        normal: normalVector,
        tangent,
        bitangent
      };
    }
    flattenVertex(vertex2, normalTangent, normalBitangent) {
      return new Vector2(
        vertex2.dot(normalTangent),
        vertex2.dot(normalBitangent)
      );
    }
    // Generate data for a single face in a geometry. If the face is a quad then split it into 2 tris
    genFace(buffers, geoInfo, facePositionIndexes, materialIndex, faceNormals, faceColors, faceUVs, faceWeights, faceWeightIndices, faceLength) {
      let triangles;
      if (faceLength > 3) {
        const vertices = [];
        for (let i = 0; i < facePositionIndexes.length; i += 3) {
          vertices.push(new Vector3(
            geoInfo.vertexPositions[facePositionIndexes[i]],
            geoInfo.vertexPositions[facePositionIndexes[i + 1]],
            geoInfo.vertexPositions[facePositionIndexes[i + 2]]
          ));
        }
        const { tangent, bitangent } = this.getNormalTangentAndBitangent(vertices);
        const triangulationInput = [];
        for (const vertex2 of vertices) {
          triangulationInput.push(this.flattenVertex(vertex2, tangent, bitangent));
        }
        triangles = ShapeUtils.triangulateShape(triangulationInput, []);
      } else {
        triangles = [[0, 1, 2]];
      }
      for (const [i0, i1, i2] of triangles) {
        buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i0 * 3]]);
        buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i0 * 3 + 1]]);
        buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i0 * 3 + 2]]);
        buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i1 * 3]]);
        buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i1 * 3 + 1]]);
        buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i1 * 3 + 2]]);
        buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i2 * 3]]);
        buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i2 * 3 + 1]]);
        buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i2 * 3 + 2]]);
        if (geoInfo.skeleton) {
          buffers.vertexWeights.push(faceWeights[i0 * 4]);
          buffers.vertexWeights.push(faceWeights[i0 * 4 + 1]);
          buffers.vertexWeights.push(faceWeights[i0 * 4 + 2]);
          buffers.vertexWeights.push(faceWeights[i0 * 4 + 3]);
          buffers.vertexWeights.push(faceWeights[i1 * 4]);
          buffers.vertexWeights.push(faceWeights[i1 * 4 + 1]);
          buffers.vertexWeights.push(faceWeights[i1 * 4 + 2]);
          buffers.vertexWeights.push(faceWeights[i1 * 4 + 3]);
          buffers.vertexWeights.push(faceWeights[i2 * 4]);
          buffers.vertexWeights.push(faceWeights[i2 * 4 + 1]);
          buffers.vertexWeights.push(faceWeights[i2 * 4 + 2]);
          buffers.vertexWeights.push(faceWeights[i2 * 4 + 3]);
          buffers.weightsIndices.push(faceWeightIndices[i0 * 4]);
          buffers.weightsIndices.push(faceWeightIndices[i0 * 4 + 1]);
          buffers.weightsIndices.push(faceWeightIndices[i0 * 4 + 2]);
          buffers.weightsIndices.push(faceWeightIndices[i0 * 4 + 3]);
          buffers.weightsIndices.push(faceWeightIndices[i1 * 4]);
          buffers.weightsIndices.push(faceWeightIndices[i1 * 4 + 1]);
          buffers.weightsIndices.push(faceWeightIndices[i1 * 4 + 2]);
          buffers.weightsIndices.push(faceWeightIndices[i1 * 4 + 3]);
          buffers.weightsIndices.push(faceWeightIndices[i2 * 4]);
          buffers.weightsIndices.push(faceWeightIndices[i2 * 4 + 1]);
          buffers.weightsIndices.push(faceWeightIndices[i2 * 4 + 2]);
          buffers.weightsIndices.push(faceWeightIndices[i2 * 4 + 3]);
        }
        if (geoInfo.color) {
          buffers.colors.push(faceColors[i0 * 3]);
          buffers.colors.push(faceColors[i0 * 3 + 1]);
          buffers.colors.push(faceColors[i0 * 3 + 2]);
          buffers.colors.push(faceColors[i1 * 3]);
          buffers.colors.push(faceColors[i1 * 3 + 1]);
          buffers.colors.push(faceColors[i1 * 3 + 2]);
          buffers.colors.push(faceColors[i2 * 3]);
          buffers.colors.push(faceColors[i2 * 3 + 1]);
          buffers.colors.push(faceColors[i2 * 3 + 2]);
        }
        if (geoInfo.material && geoInfo.material.mappingType !== "AllSame") {
          buffers.materialIndex.push(materialIndex);
          buffers.materialIndex.push(materialIndex);
          buffers.materialIndex.push(materialIndex);
        }
        if (geoInfo.normal) {
          buffers.normal.push(faceNormals[i0 * 3]);
          buffers.normal.push(faceNormals[i0 * 3 + 1]);
          buffers.normal.push(faceNormals[i0 * 3 + 2]);
          buffers.normal.push(faceNormals[i1 * 3]);
          buffers.normal.push(faceNormals[i1 * 3 + 1]);
          buffers.normal.push(faceNormals[i1 * 3 + 2]);
          buffers.normal.push(faceNormals[i2 * 3]);
          buffers.normal.push(faceNormals[i2 * 3 + 1]);
          buffers.normal.push(faceNormals[i2 * 3 + 2]);
        }
        if (geoInfo.uv) {
          geoInfo.uv.forEach(function(uv, j) {
            if (buffers.uvs[j] === void 0) buffers.uvs[j] = [];
            buffers.uvs[j].push(faceUVs[j][i0 * 2]);
            buffers.uvs[j].push(faceUVs[j][i0 * 2 + 1]);
            buffers.uvs[j].push(faceUVs[j][i1 * 2]);
            buffers.uvs[j].push(faceUVs[j][i1 * 2 + 1]);
            buffers.uvs[j].push(faceUVs[j][i2 * 2]);
            buffers.uvs[j].push(faceUVs[j][i2 * 2 + 1]);
          });
        }
      }
    }
    addMorphTargets(parentGeo, parentGeoNode, morphTargets, preTransform) {
      if (morphTargets.length === 0) return;
      parentGeo.morphTargetsRelative = true;
      parentGeo.morphAttributes.position = [];
      const scope = this;
      morphTargets.forEach(function(morphTarget) {
        morphTarget.rawTargets.forEach(function(rawTarget) {
          const morphGeoNode = fbxTree.Objects.Geometry[rawTarget.geoID];
          if (morphGeoNode !== void 0) {
            scope.genMorphGeometry(parentGeo, parentGeoNode, morphGeoNode, preTransform, rawTarget.name);
          }
        });
      });
    }
    // a morph geometry node is similar to a standard  node, and the node is also contained
    // in FBXTree.Objects.Geometry, however it can only have attributes for position, normal
    // and a special attribute Index defining which vertices of the original geometry are affected
    // Normal and position attributes only have data for the vertices that are affected by the morph
    genMorphGeometry(parentGeo, parentGeoNode, morphGeoNode, preTransform, name) {
      const vertexIndices = parentGeoNode.PolygonVertexIndex !== void 0 ? parentGeoNode.PolygonVertexIndex.a : [];
      const morphPositionsSparse = morphGeoNode.Vertices !== void 0 ? morphGeoNode.Vertices.a : [];
      const indices = morphGeoNode.Indexes !== void 0 ? morphGeoNode.Indexes.a : [];
      const length = parentGeo.attributes.position.count * 3;
      const morphPositions = new Float32Array(length);
      for (let i = 0; i < indices.length; i++) {
        const morphIndex = indices[i] * 3;
        morphPositions[morphIndex] = morphPositionsSparse[i * 3];
        morphPositions[morphIndex + 1] = morphPositionsSparse[i * 3 + 1];
        morphPositions[morphIndex + 2] = morphPositionsSparse[i * 3 + 2];
      }
      const morphGeoInfo = {
        vertexIndices,
        vertexPositions: morphPositions
      };
      const morphBuffers = this.genBuffers(morphGeoInfo);
      const positionAttribute = new Float32BufferAttribute(morphBuffers.vertex, 3);
      positionAttribute.name = name || morphGeoNode.attrName;
      positionAttribute.applyMatrix4(preTransform);
      parentGeo.morphAttributes.position.push(positionAttribute);
    }
    // Parse normal from FBXTree.Objects.Geometry.LayerElementNormal if it exists
    parseNormals(NormalNode) {
      const mappingType = NormalNode.MappingInformationType;
      const referenceType = NormalNode.ReferenceInformationType;
      const buffer = NormalNode.Normals.a;
      let indexBuffer = [];
      if (referenceType === "IndexToDirect") {
        if ("NormalIndex" in NormalNode) {
          indexBuffer = NormalNode.NormalIndex.a;
        } else if ("NormalsIndex" in NormalNode) {
          indexBuffer = NormalNode.NormalsIndex.a;
        }
      }
      return {
        dataSize: 3,
        buffer,
        indices: indexBuffer,
        mappingType,
        referenceType
      };
    }
    // Parse UVs from FBXTree.Objects.Geometry.LayerElementUV if it exists
    parseUVs(UVNode) {
      const mappingType = UVNode.MappingInformationType;
      const referenceType = UVNode.ReferenceInformationType;
      const buffer = UVNode.UV.a;
      let indexBuffer = [];
      if (referenceType === "IndexToDirect") {
        indexBuffer = UVNode.UVIndex.a;
      }
      return {
        dataSize: 2,
        buffer,
        indices: indexBuffer,
        mappingType,
        referenceType
      };
    }
    // Parse Vertex Colors from FBXTree.Objects.Geometry.LayerElementColor if it exists
    parseVertexColors(ColorNode) {
      const mappingType = ColorNode.MappingInformationType;
      const referenceType = ColorNode.ReferenceInformationType;
      const buffer = ColorNode.Colors.a;
      let indexBuffer = [];
      if (referenceType === "IndexToDirect") {
        indexBuffer = ColorNode.ColorIndex.a;
      }
      for (let i = 0, c = new Color(); i < buffer.length; i += 4) {
        c.fromArray(buffer, i).convertSRGBToLinear().toArray(buffer, i);
      }
      return {
        dataSize: 4,
        buffer,
        indices: indexBuffer,
        mappingType,
        referenceType
      };
    }
    // Parse mapping and material data in FBXTree.Objects.Geometry.LayerElementMaterial if it exists
    parseMaterialIndices(MaterialNode) {
      const mappingType = MaterialNode.MappingInformationType;
      const referenceType = MaterialNode.ReferenceInformationType;
      if (mappingType === "NoMappingInformation") {
        return {
          dataSize: 1,
          buffer: [0],
          indices: [0],
          mappingType: "AllSame",
          referenceType
        };
      }
      const materialIndexBuffer = MaterialNode.Materials.a;
      const materialIndices = [];
      for (let i = 0; i < materialIndexBuffer.length; ++i) {
        materialIndices.push(i);
      }
      return {
        dataSize: 1,
        buffer: materialIndexBuffer,
        indices: materialIndices,
        mappingType,
        referenceType
      };
    }
    // Generate a NurbGeometry from a node in FBXTree.Objects.Geometry
    parseNurbsGeometry(geoNode) {
      const order = parseInt(geoNode.Order);
      if (isNaN(order)) {
        console.error("THREE.FBXLoader: Invalid Order %s given for geometry ID: %s", geoNode.Order, geoNode.id);
        return new BufferGeometry();
      }
      const degree = order - 1;
      const knots = geoNode.KnotVector.a;
      const controlPoints = [];
      const pointsValues = geoNode.Points.a;
      for (let i = 0, l = pointsValues.length; i < l; i += 4) {
        controlPoints.push(new Vector4().fromArray(pointsValues, i));
      }
      let startKnot, endKnot;
      if (geoNode.Form === "Closed") {
        controlPoints.push(controlPoints[0]);
      } else if (geoNode.Form === "Periodic") {
        startKnot = degree;
        endKnot = knots.length - 1 - startKnot;
        for (let i = 0; i < degree; ++i) {
          controlPoints.push(controlPoints[i]);
        }
      }
      const curve = new NURBSCurve(degree, knots, controlPoints, startKnot, endKnot);
      const points = curve.getPoints(controlPoints.length * 12);
      return new BufferGeometry().setFromPoints(points);
    }
  };
  var AnimationParser = class {
    // take raw animation clips and turn them into three.js animation clips
    parse() {
      const animationClips = [];
      const rawClips = this.parseClips();
      if (rawClips !== void 0) {
        for (const key in rawClips) {
          const rawClip = rawClips[key];
          const clip = this.addClip(rawClip);
          animationClips.push(clip);
        }
      }
      return animationClips;
    }
    parseClips() {
      if (fbxTree.Objects.AnimationCurve === void 0) return void 0;
      const curveNodesMap = this.parseAnimationCurveNodes();
      this.parseAnimationCurves(curveNodesMap);
      const layersMap = this.parseAnimationLayers(curveNodesMap);
      const rawClips = this.parseAnimStacks(layersMap);
      return rawClips;
    }
    // parse nodes in FBXTree.Objects.AnimationCurveNode
    // each AnimationCurveNode holds data for an animation transform for a model (e.g. left arm rotation )
    // and is referenced by an AnimationLayer
    parseAnimationCurveNodes() {
      const rawCurveNodes = fbxTree.Objects.AnimationCurveNode;
      const curveNodesMap = /* @__PURE__ */ new Map();
      for (const nodeID in rawCurveNodes) {
        const rawCurveNode = rawCurveNodes[nodeID];
        if (rawCurveNode.attrName.match(/S|R|T|DeformPercent/) !== null) {
          const curveNode = {
            id: rawCurveNode.id,
            attr: rawCurveNode.attrName,
            curves: {}
          };
          curveNodesMap.set(curveNode.id, curveNode);
        }
      }
      return curveNodesMap;
    }
    // parse nodes in FBXTree.Objects.AnimationCurve and connect them up to
    // previously parsed AnimationCurveNodes. Each AnimationCurve holds data for a single animated
    // axis ( e.g. times and values of x rotation)
    parseAnimationCurves(curveNodesMap) {
      const rawCurves = fbxTree.Objects.AnimationCurve;
      for (const nodeID in rawCurves) {
        const animationCurve = {
          id: rawCurves[nodeID].id,
          times: rawCurves[nodeID].KeyTime.a.map(convertFBXTimeToSeconds),
          values: rawCurves[nodeID].KeyValueFloat.a
        };
        const relationships = connections.get(animationCurve.id);
        if (relationships !== void 0) {
          const animationCurveID = relationships.parents[0].ID;
          const animationCurveRelationship = relationships.parents[0].relationship;
          if (animationCurveRelationship.match(/X/)) {
            curveNodesMap.get(animationCurveID).curves["x"] = animationCurve;
          } else if (animationCurveRelationship.match(/Y/)) {
            curveNodesMap.get(animationCurveID).curves["y"] = animationCurve;
          } else if (animationCurveRelationship.match(/Z/)) {
            curveNodesMap.get(animationCurveID).curves["z"] = animationCurve;
          } else if (animationCurveRelationship.match(/DeformPercent/) && curveNodesMap.has(animationCurveID)) {
            curveNodesMap.get(animationCurveID).curves["morph"] = animationCurve;
          }
        }
      }
    }
    // parse nodes in FBXTree.Objects.AnimationLayer. Each layers holds references
    // to various AnimationCurveNodes and is referenced by an AnimationStack node
    // note: theoretically a stack can have multiple layers, however in practice there always seems to be one per stack
    parseAnimationLayers(curveNodesMap) {
      const rawLayers = fbxTree.Objects.AnimationLayer;
      const layersMap = /* @__PURE__ */ new Map();
      for (const nodeID in rawLayers) {
        const layerCurveNodes = [];
        const connection = connections.get(parseInt(nodeID));
        if (connection !== void 0) {
          const children = connection.children;
          children.forEach(function(child, i) {
            if (curveNodesMap.has(child.ID)) {
              const curveNode = curveNodesMap.get(child.ID);
              if (curveNode.curves.x !== void 0 || curveNode.curves.y !== void 0 || curveNode.curves.z !== void 0) {
                if (layerCurveNodes[i] === void 0) {
                  const modelID = connections.get(child.ID).parents.filter(function(parent) {
                    return parent.relationship !== void 0;
                  })[0].ID;
                  if (modelID !== void 0) {
                    const rawModel = fbxTree.Objects.Model[modelID.toString()];
                    if (rawModel === void 0) {
                      console.warn("THREE.FBXLoader: Encountered a unused curve.", child);
                      return;
                    }
                    const node = {
                      modelName: rawModel.attrName ? PropertyBinding.sanitizeNodeName(rawModel.attrName) : "",
                      ID: rawModel.id,
                      initialPosition: [0, 0, 0],
                      initialRotation: [0, 0, 0],
                      initialScale: [1, 1, 1]
                    };
                    sceneGraph.traverse(function(child2) {
                      if (child2.ID === rawModel.id) {
                        node.transform = child2.matrix;
                        if (child2.userData.transformData) node.eulerOrder = child2.userData.transformData.eulerOrder;
                      }
                    });
                    if (!node.transform) node.transform = new Matrix4();
                    if ("PreRotation" in rawModel) node.preRotation = rawModel.PreRotation.value;
                    if ("PostRotation" in rawModel) node.postRotation = rawModel.PostRotation.value;
                    layerCurveNodes[i] = node;
                  }
                }
                if (layerCurveNodes[i]) layerCurveNodes[i][curveNode.attr] = curveNode;
              } else if (curveNode.curves.morph !== void 0) {
                if (layerCurveNodes[i] === void 0) {
                  const deformerID = connections.get(child.ID).parents.filter(function(parent) {
                    return parent.relationship !== void 0;
                  })[0].ID;
                  const morpherID = connections.get(deformerID).parents[0].ID;
                  const geoID = connections.get(morpherID).parents[0].ID;
                  const modelID = connections.get(geoID).parents[0].ID;
                  const rawModel = fbxTree.Objects.Model[modelID];
                  const node = {
                    modelName: rawModel.attrName ? PropertyBinding.sanitizeNodeName(rawModel.attrName) : "",
                    morphName: fbxTree.Objects.Deformer[deformerID].attrName
                  };
                  layerCurveNodes[i] = node;
                }
                layerCurveNodes[i][curveNode.attr] = curveNode;
              }
            }
          });
          layersMap.set(parseInt(nodeID), layerCurveNodes);
        }
      }
      return layersMap;
    }
    // parse nodes in FBXTree.Objects.AnimationStack. These are the top level node in the animation
    // hierarchy. Each Stack node will be used to create a AnimationClip
    parseAnimStacks(layersMap) {
      const rawStacks = fbxTree.Objects.AnimationStack;
      const rawClips = {};
      for (const nodeID in rawStacks) {
        const children = connections.get(parseInt(nodeID)).children;
        if (children.length > 1) {
          console.warn("THREE.FBXLoader: Encountered an animation stack with multiple layers, this is currently not supported. Ignoring subsequent layers.");
        }
        const layer = layersMap.get(children[0].ID);
        rawClips[nodeID] = {
          name: rawStacks[nodeID].attrName,
          layer
        };
      }
      return rawClips;
    }
    addClip(rawClip) {
      let tracks = [];
      const scope = this;
      rawClip.layer.forEach(function(rawTracks) {
        tracks = tracks.concat(scope.generateTracks(rawTracks));
      });
      return new AnimationClip(rawClip.name, -1, tracks);
    }
    generateTracks(rawTracks) {
      const tracks = [];
      let initialPosition = new Vector3();
      let initialScale = new Vector3();
      if (rawTracks.transform) rawTracks.transform.decompose(initialPosition, new Quaternion(), initialScale);
      initialPosition = initialPosition.toArray();
      initialScale = initialScale.toArray();
      if (rawTracks.T !== void 0 && Object.keys(rawTracks.T.curves).length > 0) {
        const positionTrack = this.generateVectorTrack(rawTracks.modelName, rawTracks.T.curves, initialPosition, "position");
        if (positionTrack !== void 0) tracks.push(positionTrack);
      }
      if (rawTracks.R !== void 0 && Object.keys(rawTracks.R.curves).length > 0) {
        const rotationTrack = this.generateRotationTrack(rawTracks.modelName, rawTracks.R.curves, rawTracks.preRotation, rawTracks.postRotation, rawTracks.eulerOrder);
        if (rotationTrack !== void 0) tracks.push(rotationTrack);
      }
      if (rawTracks.S !== void 0 && Object.keys(rawTracks.S.curves).length > 0) {
        const scaleTrack = this.generateVectorTrack(rawTracks.modelName, rawTracks.S.curves, initialScale, "scale");
        if (scaleTrack !== void 0) tracks.push(scaleTrack);
      }
      if (rawTracks.DeformPercent !== void 0) {
        const morphTrack = this.generateMorphTrack(rawTracks);
        if (morphTrack !== void 0) tracks.push(morphTrack);
      }
      return tracks;
    }
    generateVectorTrack(modelName, curves, initialValue, type) {
      const times = this.getTimesForAllAxes(curves);
      const values = this.getKeyframeTrackValues(times, curves, initialValue);
      return new VectorKeyframeTrack(modelName + "." + type, times, values);
    }
    generateRotationTrack(modelName, curves, preRotation, postRotation, eulerOrder) {
      let times;
      let values;
      if (curves.x !== void 0 && curves.y !== void 0 && curves.z !== void 0) {
        const result = this.interpolateRotations(curves.x, curves.y, curves.z, eulerOrder);
        times = result[0];
        values = result[1];
      }
      if (preRotation !== void 0) {
        preRotation = preRotation.map(MathUtils.degToRad);
        preRotation.push(eulerOrder);
        preRotation = new Euler().fromArray(preRotation);
        preRotation = new Quaternion().setFromEuler(preRotation);
      }
      if (postRotation !== void 0) {
        postRotation = postRotation.map(MathUtils.degToRad);
        postRotation.push(eulerOrder);
        postRotation = new Euler().fromArray(postRotation);
        postRotation = new Quaternion().setFromEuler(postRotation).invert();
      }
      const quaternion = new Quaternion();
      const euler = new Euler();
      const quaternionValues = [];
      if (!values || !times) return new QuaternionKeyframeTrack(modelName + ".quaternion", [], []);
      for (let i = 0; i < values.length; i += 3) {
        euler.set(values[i], values[i + 1], values[i + 2], eulerOrder);
        quaternion.setFromEuler(euler);
        if (preRotation !== void 0) quaternion.premultiply(preRotation);
        if (postRotation !== void 0) quaternion.multiply(postRotation);
        if (i > 2) {
          const prevQuat = new Quaternion().fromArray(
            quaternionValues,
            (i - 3) / 3 * 4
          );
          if (prevQuat.dot(quaternion) < 0) {
            quaternion.set(-quaternion.x, -quaternion.y, -quaternion.z, -quaternion.w);
          }
        }
        quaternion.toArray(quaternionValues, i / 3 * 4);
      }
      return new QuaternionKeyframeTrack(modelName + ".quaternion", times, quaternionValues);
    }
    generateMorphTrack(rawTracks) {
      const curves = rawTracks.DeformPercent.curves.morph;
      const values = curves.values.map(function(val) {
        return val / 100;
      });
      const morphNum = sceneGraph.getObjectByName(rawTracks.modelName).morphTargetDictionary[rawTracks.morphName];
      return new NumberKeyframeTrack(rawTracks.modelName + ".morphTargetInfluences[" + morphNum + "]", curves.times, values);
    }
    // For all animated objects, times are defined separately for each axis
    // Here we'll combine the times into one sorted array without duplicates
    getTimesForAllAxes(curves) {
      let times = [];
      if (curves.x !== void 0) times = times.concat(curves.x.times);
      if (curves.y !== void 0) times = times.concat(curves.y.times);
      if (curves.z !== void 0) times = times.concat(curves.z.times);
      times = times.sort(function(a, b) {
        return a - b;
      });
      if (times.length > 1) {
        let targetIndex = 1;
        let lastValue = times[0];
        for (let i = 1; i < times.length; i++) {
          const currentValue = times[i];
          if (currentValue !== lastValue) {
            times[targetIndex] = currentValue;
            lastValue = currentValue;
            targetIndex++;
          }
        }
        times = times.slice(0, targetIndex);
      }
      return times;
    }
    getKeyframeTrackValues(times, curves, initialValue) {
      const prevValue = initialValue;
      const values = [];
      let xIndex = -1;
      let yIndex = -1;
      let zIndex = -1;
      times.forEach(function(time) {
        if (curves.x) xIndex = curves.x.times.indexOf(time);
        if (curves.y) yIndex = curves.y.times.indexOf(time);
        if (curves.z) zIndex = curves.z.times.indexOf(time);
        if (xIndex !== -1) {
          const xValue = curves.x.values[xIndex];
          values.push(xValue);
          prevValue[0] = xValue;
        } else {
          values.push(prevValue[0]);
        }
        if (yIndex !== -1) {
          const yValue = curves.y.values[yIndex];
          values.push(yValue);
          prevValue[1] = yValue;
        } else {
          values.push(prevValue[1]);
        }
        if (zIndex !== -1) {
          const zValue = curves.z.values[zIndex];
          values.push(zValue);
          prevValue[2] = zValue;
        } else {
          values.push(prevValue[2]);
        }
      });
      return values;
    }
    // Rotations are defined as Euler angles which can have values  of any size
    // These will be converted to quaternions which don't support values greater than
    // PI, so we'll interpolate large rotations
    interpolateRotations(curvex, curvey, curvez, eulerOrder) {
      const times = [];
      const values = [];
      times.push(curvex.times[0]);
      values.push(MathUtils.degToRad(curvex.values[0]));
      values.push(MathUtils.degToRad(curvey.values[0]));
      values.push(MathUtils.degToRad(curvez.values[0]));
      for (let i = 1; i < curvex.values.length; i++) {
        const initialValue = [
          curvex.values[i - 1],
          curvey.values[i - 1],
          curvez.values[i - 1]
        ];
        if (isNaN(initialValue[0]) || isNaN(initialValue[1]) || isNaN(initialValue[2])) {
          continue;
        }
        const initialValueRad = initialValue.map(MathUtils.degToRad);
        const currentValue = [
          curvex.values[i],
          curvey.values[i],
          curvez.values[i]
        ];
        if (isNaN(currentValue[0]) || isNaN(currentValue[1]) || isNaN(currentValue[2])) {
          continue;
        }
        const currentValueRad = currentValue.map(MathUtils.degToRad);
        const valuesSpan = [
          currentValue[0] - initialValue[0],
          currentValue[1] - initialValue[1],
          currentValue[2] - initialValue[2]
        ];
        const absoluteSpan = [
          Math.abs(valuesSpan[0]),
          Math.abs(valuesSpan[1]),
          Math.abs(valuesSpan[2])
        ];
        if (absoluteSpan[0] >= 180 || absoluteSpan[1] >= 180 || absoluteSpan[2] >= 180) {
          const maxAbsSpan = Math.max(...absoluteSpan);
          const numSubIntervals = maxAbsSpan / 180;
          const E1 = new Euler(...initialValueRad, eulerOrder);
          const E2 = new Euler(...currentValueRad, eulerOrder);
          const Q1 = new Quaternion().setFromEuler(E1);
          const Q2 = new Quaternion().setFromEuler(E2);
          if (Q1.dot(Q2)) {
            Q2.set(-Q2.x, -Q2.y, -Q2.z, -Q2.w);
          }
          const initialTime = curvex.times[i - 1];
          const timeSpan = curvex.times[i] - initialTime;
          const Q = new Quaternion();
          const E = new Euler();
          for (let t = 0; t < 1; t += 1 / numSubIntervals) {
            Q.copy(Q1.clone().slerp(Q2.clone(), t));
            times.push(initialTime + t * timeSpan);
            E.setFromQuaternion(Q, eulerOrder);
            values.push(E.x);
            values.push(E.y);
            values.push(E.z);
          }
        } else {
          times.push(curvex.times[i]);
          values.push(MathUtils.degToRad(curvex.values[i]));
          values.push(MathUtils.degToRad(curvey.values[i]));
          values.push(MathUtils.degToRad(curvez.values[i]));
        }
      }
      return [times, values];
    }
  };
  var TextParser = class {
    getPrevNode() {
      return this.nodeStack[this.currentIndent - 2];
    }
    getCurrentNode() {
      return this.nodeStack[this.currentIndent - 1];
    }
    getCurrentProp() {
      return this.currentProp;
    }
    pushStack(node) {
      this.nodeStack.push(node);
      this.currentIndent += 1;
    }
    popStack() {
      this.nodeStack.pop();
      this.currentIndent -= 1;
    }
    setCurrentProp(val, name) {
      this.currentProp = val;
      this.currentPropName = name;
    }
    parse(text) {
      this.currentIndent = 0;
      this.allNodes = new FBXTree();
      this.nodeStack = [];
      this.currentProp = [];
      this.currentPropName = "";
      const scope = this;
      const split = text.split(/[\r\n]+/);
      split.forEach(function(line, i) {
        const matchComment = line.match(/^[\s\t]*;/);
        const matchEmpty = line.match(/^[\s\t]*$/);
        if (matchComment || matchEmpty) return;
        const matchBeginning = line.match("^\\t{" + scope.currentIndent + "}(\\w+):(.*){", "");
        const matchProperty = line.match("^\\t{" + scope.currentIndent + "}(\\w+):[\\s\\t\\r\\n](.*)");
        const matchEnd = line.match("^\\t{" + (scope.currentIndent - 1) + "}}");
        if (matchBeginning) {
          scope.parseNodeBegin(line, matchBeginning);
        } else if (matchProperty) {
          scope.parseNodeProperty(line, matchProperty, split[++i]);
        } else if (matchEnd) {
          scope.popStack();
        } else if (line.match(/^[^\s\t}]/)) {
          scope.parseNodePropertyContinued(line);
        }
      });
      return this.allNodes;
    }
    parseNodeBegin(line, property) {
      const nodeName = property[1].trim().replace(/^"/, "").replace(/"$/, "");
      const nodeAttrs = property[2].split(",").map(function(attr) {
        return attr.trim().replace(/^"/, "").replace(/"$/, "");
      });
      const node = { name: nodeName };
      const attrs = this.parseNodeAttr(nodeAttrs);
      const currentNode = this.getCurrentNode();
      if (this.currentIndent === 0) {
        this.allNodes.add(nodeName, node);
      } else {
        if (nodeName in currentNode) {
          if (nodeName === "PoseNode") {
            currentNode.PoseNode.push(node);
          } else if (currentNode[nodeName].id !== void 0) {
            currentNode[nodeName] = {};
            currentNode[nodeName][currentNode[nodeName].id] = currentNode[nodeName];
          }
          if (attrs.id !== "") currentNode[nodeName][attrs.id] = node;
        } else if (typeof attrs.id === "number") {
          currentNode[nodeName] = {};
          currentNode[nodeName][attrs.id] = node;
        } else if (nodeName !== "Properties70") {
          if (nodeName === "PoseNode") currentNode[nodeName] = [node];
          else currentNode[nodeName] = node;
        }
      }
      if (typeof attrs.id === "number") node.id = attrs.id;
      if (attrs.name !== "") node.attrName = attrs.name;
      if (attrs.type !== "") node.attrType = attrs.type;
      this.pushStack(node);
    }
    parseNodeAttr(attrs) {
      let id = attrs[0];
      if (attrs[0] !== "") {
        id = parseInt(attrs[0]);
        if (isNaN(id)) {
          id = attrs[0];
        }
      }
      let name = "", type = "";
      if (attrs.length > 1) {
        name = attrs[1].replace(/^(\w+)::/, "");
        type = attrs[2];
      }
      return { id, name, type };
    }
    parseNodeProperty(line, property, contentLine) {
      let propName = property[1].replace(/^"/, "").replace(/"$/, "").trim();
      let propValue = property[2].replace(/^"/, "").replace(/"$/, "").trim();
      if (propName === "Content" && propValue === ",") {
        propValue = contentLine.replace(/"/g, "").replace(/,$/, "").trim();
      }
      const currentNode = this.getCurrentNode();
      const parentName = currentNode.name;
      if (parentName === "Properties70") {
        this.parseNodeSpecialProperty(line, propName, propValue);
        return;
      }
      if (propName === "C") {
        const connProps = propValue.split(",").slice(1);
        const from = parseInt(connProps[0]);
        const to = parseInt(connProps[1]);
        let rest = propValue.split(",").slice(3);
        rest = rest.map(function(elem) {
          return elem.trim().replace(/^"/, "");
        });
        propName = "connections";
        propValue = [from, to];
        append(propValue, rest);
        if (currentNode[propName] === void 0) {
          currentNode[propName] = [];
        }
      }
      if (propName === "Node") currentNode.id = propValue;
      if (propName in currentNode && Array.isArray(currentNode[propName])) {
        currentNode[propName].push(propValue);
      } else {
        if (propName !== "a") currentNode[propName] = propValue;
        else currentNode.a = propValue;
      }
      this.setCurrentProp(currentNode, propName);
      if (propName === "a" && propValue.slice(-1) !== ",") {
        currentNode.a = parseNumberArray(propValue);
      }
    }
    parseNodePropertyContinued(line) {
      const currentNode = this.getCurrentNode();
      currentNode.a += line;
      if (line.slice(-1) !== ",") {
        currentNode.a = parseNumberArray(currentNode.a);
      }
    }
    // parse "Property70"
    parseNodeSpecialProperty(line, propName, propValue) {
      const props = propValue.split('",').map(function(prop) {
        return prop.trim().replace(/^\"/, "").replace(/\s/, "_");
      });
      const innerPropName = props[0];
      const innerPropType1 = props[1];
      const innerPropType2 = props[2];
      const innerPropFlag = props[3];
      let innerPropValue = props[4];
      switch (innerPropType1) {
        case "int":
        case "enum":
        case "bool":
        case "ULongLong":
        case "double":
        case "Number":
        case "FieldOfView":
          innerPropValue = parseFloat(innerPropValue);
          break;
        case "Color":
        case "ColorRGB":
        case "Vector3D":
        case "Lcl_Translation":
        case "Lcl_Rotation":
        case "Lcl_Scaling":
          innerPropValue = parseNumberArray(innerPropValue);
          break;
      }
      this.getPrevNode()[innerPropName] = {
        "type": innerPropType1,
        "type2": innerPropType2,
        "flag": innerPropFlag,
        "value": innerPropValue
      };
      this.setCurrentProp(this.getPrevNode(), innerPropName);
    }
  };
  var BinaryParser = class {
    parse(buffer) {
      const reader = new BinaryReader(buffer);
      reader.skip(23);
      const version = reader.getUint32();
      if (version < 6400) {
        throw new Error("THREE.FBXLoader: FBX version not supported, FileVersion: " + version);
      }
      const allNodes = new FBXTree();
      while (!this.endOfContent(reader)) {
        const node = this.parseNode(reader, version);
        if (node !== null) allNodes.add(node.name, node);
      }
      return allNodes;
    }
    // Check if reader has reached the end of content.
    endOfContent(reader) {
      if (reader.size() % 16 === 0) {
        return (reader.getOffset() + 160 + 16 & ~15) >= reader.size();
      } else {
        return reader.getOffset() + 160 + 16 >= reader.size();
      }
    }
    // recursively parse nodes until the end of the file is reached
    parseNode(reader, version) {
      const node = {};
      const endOffset = version >= 7500 ? reader.getUint64() : reader.getUint32();
      const numProperties = version >= 7500 ? reader.getUint64() : reader.getUint32();
      version >= 7500 ? reader.getUint64() : reader.getUint32();
      const nameLen = reader.getUint8();
      const name = reader.getString(nameLen);
      if (endOffset === 0) return null;
      const propertyList = [];
      for (let i = 0; i < numProperties; i++) {
        propertyList.push(this.parseProperty(reader));
      }
      const id = propertyList.length > 0 ? propertyList[0] : "";
      const attrName = propertyList.length > 1 ? propertyList[1] : "";
      const attrType = propertyList.length > 2 ? propertyList[2] : "";
      node.singleProperty = numProperties === 1 && reader.getOffset() === endOffset ? true : false;
      while (endOffset > reader.getOffset()) {
        const subNode = this.parseNode(reader, version);
        if (subNode !== null) this.parseSubNode(name, node, subNode);
      }
      node.propertyList = propertyList;
      if (typeof id === "number") node.id = id;
      if (attrName !== "") node.attrName = attrName;
      if (attrType !== "") node.attrType = attrType;
      if (name !== "") node.name = name;
      return node;
    }
    parseSubNode(name, node, subNode) {
      if (subNode.singleProperty === true) {
        const value = subNode.propertyList[0];
        if (Array.isArray(value)) {
          node[subNode.name] = subNode;
          subNode.a = value;
        } else {
          node[subNode.name] = value;
        }
      } else if (name === "Connections" && subNode.name === "C") {
        const array = [];
        subNode.propertyList.forEach(function(property, i) {
          if (i !== 0) array.push(property);
        });
        if (node.connections === void 0) {
          node.connections = [];
        }
        node.connections.push(array);
      } else if (subNode.name === "Properties70") {
        const keys = Object.keys(subNode);
        keys.forEach(function(key) {
          node[key] = subNode[key];
        });
      } else if (name === "Properties70" && subNode.name === "P") {
        let innerPropName = subNode.propertyList[0];
        let innerPropType1 = subNode.propertyList[1];
        const innerPropType2 = subNode.propertyList[2];
        const innerPropFlag = subNode.propertyList[3];
        let innerPropValue;
        if (innerPropName.indexOf("Lcl ") === 0) innerPropName = innerPropName.replace("Lcl ", "Lcl_");
        if (innerPropType1.indexOf("Lcl ") === 0) innerPropType1 = innerPropType1.replace("Lcl ", "Lcl_");
        if (innerPropType1 === "Color" || innerPropType1 === "ColorRGB" || innerPropType1 === "Vector" || innerPropType1 === "Vector3D" || innerPropType1.indexOf("Lcl_") === 0) {
          innerPropValue = [
            subNode.propertyList[4],
            subNode.propertyList[5],
            subNode.propertyList[6]
          ];
        } else {
          innerPropValue = subNode.propertyList[4];
        }
        node[innerPropName] = {
          "type": innerPropType1,
          "type2": innerPropType2,
          "flag": innerPropFlag,
          "value": innerPropValue
        };
      } else if (node[subNode.name] === void 0) {
        if (typeof subNode.id === "number") {
          node[subNode.name] = {};
          node[subNode.name][subNode.id] = subNode;
        } else {
          node[subNode.name] = subNode;
        }
      } else {
        if (subNode.name === "PoseNode") {
          if (!Array.isArray(node[subNode.name])) {
            node[subNode.name] = [node[subNode.name]];
          }
          node[subNode.name].push(subNode);
        } else if (node[subNode.name][subNode.id] === void 0) {
          node[subNode.name][subNode.id] = subNode;
        }
      }
    }
    parseProperty(reader) {
      const type = reader.getString(1);
      let length;
      switch (type) {
        case "C":
          return reader.getBoolean();
        case "D":
          return reader.getFloat64();
        case "F":
          return reader.getFloat32();
        case "I":
          return reader.getInt32();
        case "L":
          return reader.getInt64();
        case "R":
          length = reader.getUint32();
          return reader.getArrayBuffer(length);
        case "S":
          length = reader.getUint32();
          return reader.getString(length);
        case "Y":
          return reader.getInt16();
        case "b":
        case "c":
        case "d":
        case "f":
        case "i":
        case "l":
          const arrayLength = reader.getUint32();
          const encoding = reader.getUint32();
          const compressedLength = reader.getUint32();
          if (encoding === 0) {
            switch (type) {
              case "b":
              case "c":
                return reader.getBooleanArray(arrayLength);
              case "d":
                return reader.getFloat64Array(arrayLength);
              case "f":
                return reader.getFloat32Array(arrayLength);
              case "i":
                return reader.getInt32Array(arrayLength);
              case "l":
                return reader.getInt64Array(arrayLength);
            }
          }
          const data = unzlibSync(new Uint8Array(reader.getArrayBuffer(compressedLength)));
          const reader2 = new BinaryReader(data.buffer);
          switch (type) {
            case "b":
            case "c":
              return reader2.getBooleanArray(arrayLength);
            case "d":
              return reader2.getFloat64Array(arrayLength);
            case "f":
              return reader2.getFloat32Array(arrayLength);
            case "i":
              return reader2.getInt32Array(arrayLength);
            case "l":
              return reader2.getInt64Array(arrayLength);
          }
          break;
        // cannot happen but is required by the DeepScan
        default:
          throw new Error("THREE.FBXLoader: Unknown property type " + type);
      }
    }
  };
  var BinaryReader = class {
    constructor(buffer, littleEndian) {
      this.dv = new DataView(buffer);
      this.offset = 0;
      this.littleEndian = littleEndian !== void 0 ? littleEndian : true;
      this._textDecoder = new TextDecoder();
    }
    getOffset() {
      return this.offset;
    }
    size() {
      return this.dv.buffer.byteLength;
    }
    skip(length) {
      this.offset += length;
    }
    // seems like true/false representation depends on exporter.
    // true: 1 or 'Y'(=0x59), false: 0 or 'T'(=0x54)
    // then sees LSB.
    getBoolean() {
      return (this.getUint8() & 1) === 1;
    }
    getBooleanArray(size) {
      const a = [];
      for (let i = 0; i < size; i++) {
        a.push(this.getBoolean());
      }
      return a;
    }
    getUint8() {
      const value = this.dv.getUint8(this.offset);
      this.offset += 1;
      return value;
    }
    getInt16() {
      const value = this.dv.getInt16(this.offset, this.littleEndian);
      this.offset += 2;
      return value;
    }
    getInt32() {
      const value = this.dv.getInt32(this.offset, this.littleEndian);
      this.offset += 4;
      return value;
    }
    getInt32Array(size) {
      const a = [];
      for (let i = 0; i < size; i++) {
        a.push(this.getInt32());
      }
      return a;
    }
    getUint32() {
      const value = this.dv.getUint32(this.offset, this.littleEndian);
      this.offset += 4;
      return value;
    }
    // JavaScript doesn't support 64-bit integer so calculate this here
    // 1 << 32 will return 1 so using multiply operation instead here.
    // There's a possibility that this method returns wrong value if the value
    // is out of the range between Number.MAX_SAFE_INTEGER and Number.MIN_SAFE_INTEGER.
    // TODO: safely handle 64-bit integer
    getInt64() {
      let low, high;
      if (this.littleEndian) {
        low = this.getUint32();
        high = this.getUint32();
      } else {
        high = this.getUint32();
        low = this.getUint32();
      }
      if (high & 2147483648) {
        high = ~high & 4294967295;
        low = ~low & 4294967295;
        if (low === 4294967295) high = high + 1 & 4294967295;
        low = low + 1 & 4294967295;
        return -(high * 4294967296 + low);
      }
      return high * 4294967296 + low;
    }
    getInt64Array(size) {
      const a = [];
      for (let i = 0; i < size; i++) {
        a.push(this.getInt64());
      }
      return a;
    }
    // Note: see getInt64() comment
    getUint64() {
      let low, high;
      if (this.littleEndian) {
        low = this.getUint32();
        high = this.getUint32();
      } else {
        high = this.getUint32();
        low = this.getUint32();
      }
      return high * 4294967296 + low;
    }
    getFloat32() {
      const value = this.dv.getFloat32(this.offset, this.littleEndian);
      this.offset += 4;
      return value;
    }
    getFloat32Array(size) {
      const a = [];
      for (let i = 0; i < size; i++) {
        a.push(this.getFloat32());
      }
      return a;
    }
    getFloat64() {
      const value = this.dv.getFloat64(this.offset, this.littleEndian);
      this.offset += 8;
      return value;
    }
    getFloat64Array(size) {
      const a = [];
      for (let i = 0; i < size; i++) {
        a.push(this.getFloat64());
      }
      return a;
    }
    getArrayBuffer(size) {
      const value = this.dv.buffer.slice(this.offset, this.offset + size);
      this.offset += size;
      return value;
    }
    getString(size) {
      const start = this.offset;
      let a = new Uint8Array(this.dv.buffer, start, size);
      this.skip(size);
      const nullByte = a.indexOf(0);
      if (nullByte >= 0) a = new Uint8Array(this.dv.buffer, start, nullByte);
      return this._textDecoder.decode(a);
    }
  };
  var FBXTree = class {
    add(key, val) {
      this[key] = val;
    }
  };
  function isFbxFormatBinary(buffer) {
    const CORRECT = "Kaydara FBX Binary  \0";
    return buffer.byteLength >= CORRECT.length && CORRECT === convertArrayBufferToString(buffer, 0, CORRECT.length);
  }
  function isFbxFormatASCII(text) {
    const CORRECT = ["K", "a", "y", "d", "a", "r", "a", "\\", "F", "B", "X", "\\", "B", "i", "n", "a", "r", "y", "\\", "\\"];
    let cursor = 0;
    function read(offset) {
      const result = text[offset - 1];
      text = text.slice(cursor + offset);
      cursor++;
      return result;
    }
    for (let i = 0; i < CORRECT.length; ++i) {
      const num = read(1);
      if (num === CORRECT[i]) {
        return false;
      }
    }
    return true;
  }
  function getFbxVersion(text) {
    const versionRegExp = /FBXVersion: (\d+)/;
    const match = text.match(versionRegExp);
    if (match) {
      const version = parseInt(match[1]);
      return version;
    }
    throw new Error("THREE.FBXLoader: Cannot find the version number for the file given.");
  }
  function convertFBXTimeToSeconds(time) {
    return time / 46186158e3;
  }
  var dataArray = [];
  function getData(polygonVertexIndex, polygonIndex, vertexIndex, infoObject) {
    let index;
    switch (infoObject.mappingType) {
      case "ByPolygonVertex":
        index = polygonVertexIndex;
        break;
      case "ByPolygon":
        index = polygonIndex;
        break;
      case "ByVertice":
        index = vertexIndex;
        break;
      case "AllSame":
        index = infoObject.indices[0];
        break;
      default:
        console.warn("THREE.FBXLoader: unknown attribute mapping type " + infoObject.mappingType);
    }
    if (infoObject.referenceType === "IndexToDirect") index = infoObject.indices[index];
    const from = index * infoObject.dataSize;
    const to = from + infoObject.dataSize;
    return slice(dataArray, infoObject.buffer, from, to);
  }
  var tempEuler = new Euler();
  var tempVec = new Vector3();
  function generateTransform(transformData) {
    const lTranslationM = new Matrix4();
    const lPreRotationM = new Matrix4();
    const lRotationM = new Matrix4();
    const lPostRotationM = new Matrix4();
    const lScalingM = new Matrix4();
    const lScalingPivotM = new Matrix4();
    const lScalingOffsetM = new Matrix4();
    const lRotationOffsetM = new Matrix4();
    const lRotationPivotM = new Matrix4();
    const lParentGX = new Matrix4();
    const lParentLX = new Matrix4();
    const lGlobalT = new Matrix4();
    const inheritType = transformData.inheritType ? transformData.inheritType : 0;
    if (transformData.translation) lTranslationM.setPosition(tempVec.fromArray(transformData.translation));
    if (transformData.preRotation) {
      const array = transformData.preRotation.map(MathUtils.degToRad);
      array.push(transformData.eulerOrder || Euler.DEFAULT_ORDER);
      lPreRotationM.makeRotationFromEuler(tempEuler.fromArray(array));
    }
    if (transformData.rotation) {
      const array = transformData.rotation.map(MathUtils.degToRad);
      array.push(transformData.eulerOrder || Euler.DEFAULT_ORDER);
      lRotationM.makeRotationFromEuler(tempEuler.fromArray(array));
    }
    if (transformData.postRotation) {
      const array = transformData.postRotation.map(MathUtils.degToRad);
      array.push(transformData.eulerOrder || Euler.DEFAULT_ORDER);
      lPostRotationM.makeRotationFromEuler(tempEuler.fromArray(array));
      lPostRotationM.invert();
    }
    if (transformData.scale) lScalingM.scale(tempVec.fromArray(transformData.scale));
    if (transformData.scalingOffset) lScalingOffsetM.setPosition(tempVec.fromArray(transformData.scalingOffset));
    if (transformData.scalingPivot) lScalingPivotM.setPosition(tempVec.fromArray(transformData.scalingPivot));
    if (transformData.rotationOffset) lRotationOffsetM.setPosition(tempVec.fromArray(transformData.rotationOffset));
    if (transformData.rotationPivot) lRotationPivotM.setPosition(tempVec.fromArray(transformData.rotationPivot));
    if (transformData.parentMatrixWorld) {
      lParentLX.copy(transformData.parentMatrix);
      lParentGX.copy(transformData.parentMatrixWorld);
    }
    const lLRM = lPreRotationM.clone().multiply(lRotationM).multiply(lPostRotationM);
    const lParentGRM = new Matrix4();
    lParentGRM.extractRotation(lParentGX);
    const lParentTM = new Matrix4();
    lParentTM.copyPosition(lParentGX);
    const lParentGRSM = lParentTM.clone().invert().multiply(lParentGX);
    const lParentGSM = lParentGRM.clone().invert().multiply(lParentGRSM);
    const lLSM = lScalingM;
    const lGlobalRS = new Matrix4();
    if (inheritType === 0) {
      lGlobalRS.copy(lParentGRM).multiply(lLRM).multiply(lParentGSM).multiply(lLSM);
    } else if (inheritType === 1) {
      lGlobalRS.copy(lParentGRM).multiply(lParentGSM).multiply(lLRM).multiply(lLSM);
    } else {
      const lParentLSM = new Matrix4().scale(new Vector3().setFromMatrixScale(lParentLX));
      const lParentLSM_inv = lParentLSM.clone().invert();
      const lParentGSM_noLocal = lParentGSM.clone().multiply(lParentLSM_inv);
      lGlobalRS.copy(lParentGRM).multiply(lLRM).multiply(lParentGSM_noLocal).multiply(lLSM);
    }
    const lRotationPivotM_inv = lRotationPivotM.clone().invert();
    const lScalingPivotM_inv = lScalingPivotM.clone().invert();
    let lTransform = lTranslationM.clone().multiply(lRotationOffsetM).multiply(lRotationPivotM).multiply(lPreRotationM).multiply(lRotationM).multiply(lPostRotationM).multiply(lRotationPivotM_inv).multiply(lScalingOffsetM).multiply(lScalingPivotM).multiply(lScalingM).multiply(lScalingPivotM_inv);
    const lLocalTWithAllPivotAndOffsetInfo = new Matrix4().copyPosition(lTransform);
    const lGlobalTranslation = lParentGX.clone().multiply(lLocalTWithAllPivotAndOffsetInfo);
    lGlobalT.copyPosition(lGlobalTranslation);
    lTransform = lGlobalT.clone().multiply(lGlobalRS);
    lTransform.premultiply(lParentGX.invert());
    return lTransform;
  }
  function getEulerOrder(order) {
    order = order || 0;
    const enums = [
      "ZYX",
      // -> XYZ extrinsic
      "YZX",
      // -> XZY extrinsic
      "XZY",
      // -> YZX extrinsic
      "ZXY",
      // -> YXZ extrinsic
      "YXZ",
      // -> ZXY extrinsic
      "XYZ"
      // -> ZYX extrinsic
      //'SphericXYZ', // not possible to support
    ];
    if (order === 6) {
      console.warn("THREE.FBXLoader: unsupported Euler Order: Spherical XYZ. Animations and rotations may be incorrect.");
      return enums[0];
    }
    return enums[order];
  }
  function parseNumberArray(value) {
    const array = value.split(",").map(function(val) {
      return parseFloat(val);
    });
    return array;
  }
  function convertArrayBufferToString(buffer, from, to) {
    if (from === void 0) from = 0;
    if (to === void 0) to = buffer.byteLength;
    return new TextDecoder().decode(new Uint8Array(buffer, from, to));
  }
  function append(a, b) {
    for (let i = 0, j = a.length, l = b.length; i < l; i++, j++) {
      a[j] = b[i];
    }
  }
  function slice(a, b, from, to) {
    for (let i = from, j = 0; i < to; i++, j++) {
      a[j] = b[i];
    }
    return a;
  }

  // examples/jsm/utils/TextureUtils.js
  var _renderer;
  var fullscreenQuadGeometry;
  var fullscreenQuadMaterial;
  var fullscreenQuad;
  function decompress(texture, maxTextureSize = Infinity, renderer = null) {
    if (!fullscreenQuadGeometry) fullscreenQuadGeometry = new PlaneGeometry(2, 2, 1, 1);
    if (!fullscreenQuadMaterial) fullscreenQuadMaterial = new ShaderMaterial({
      uniforms: { blitTexture: new Uniform(texture) },
      vertexShader: `
			varying vec2 vUv;
			void main(){
				vUv = uv;
				gl_Position = vec4(position.xy * 1.0,0.,.999999);
			}`,
      fragmentShader: `
			uniform sampler2D blitTexture; 
			varying vec2 vUv;

			void main(){ 
				gl_FragColor = vec4(vUv.xy, 0, 1);
				
				#ifdef IS_SRGB
				gl_FragColor = LinearTosRGB( texture2D( blitTexture, vUv) );
				#else
				gl_FragColor = texture2D( blitTexture, vUv);
				#endif
			}`
    });
    fullscreenQuadMaterial.uniforms.blitTexture.value = texture;
    fullscreenQuadMaterial.defines.IS_SRGB = texture.colorSpace == SRGBColorSpace;
    fullscreenQuadMaterial.needsUpdate = true;
    if (!fullscreenQuad) {
      fullscreenQuad = new Mesh(fullscreenQuadGeometry, fullscreenQuadMaterial);
      fullscreenQuad.frustrumCulled = false;
    }
    const _camera2 = new PerspectiveCamera();
    const _scene = new Scene();
    _scene.add(fullscreenQuad);
    if (renderer === null) {
      renderer = _renderer = new WebGLRenderer({ antialias: false });
    }
    const width = Math.min(texture.image.width, maxTextureSize);
    const height = Math.min(texture.image.height, maxTextureSize);
    renderer.setSize(width, height);
    renderer.clear();
    renderer.render(_scene, _camera2);
    const canvas = document.createElement("canvas");
    const context = canvas.getContext("2d");
    canvas.width = width;
    canvas.height = height;
    context.drawImage(renderer.domElement, 0, 0, width, height);
    const readableTexture = new CanvasTexture(canvas);
    readableTexture.minFilter = texture.minFilter;
    readableTexture.magFilter = texture.magFilter;
    readableTexture.wrapS = texture.wrapS;
    readableTexture.wrapT = texture.wrapT;
    readableTexture.name = texture.name;
    if (_renderer) {
      _renderer.forceContextLoss();
      _renderer.dispose();
      _renderer = null;
    }
    return readableTexture;
  }

  // examples/jsm/exporters/GLTFExporter.js
  var KHR_mesh_quantization_ExtraAttrTypes = {
    POSITION: [
      "byte",
      "byte normalized",
      "unsigned byte",
      "unsigned byte normalized",
      "short",
      "short normalized",
      "unsigned short",
      "unsigned short normalized"
    ],
    NORMAL: [
      "byte normalized",
      "short normalized"
    ],
    TANGENT: [
      "byte normalized",
      "short normalized"
    ],
    TEXCOORD: [
      "byte",
      "byte normalized",
      "unsigned byte",
      "short",
      "short normalized",
      "unsigned short"
    ]
  };
  var GLTFExporter = class {
    constructor() {
      this.pluginCallbacks = [];
      this.register(function(writer) {
        return new GLTFLightExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsUnlitExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsTransmissionExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsVolumeExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsIorExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsSpecularExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsClearcoatExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsIridescenceExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsSheenExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsAnisotropyExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsEmissiveStrengthExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMaterialsBumpExtension(writer);
      });
      this.register(function(writer) {
        return new GLTFMeshGpuInstancing(writer);
      });
    }
    register(callback) {
      if (this.pluginCallbacks.indexOf(callback) === -1) {
        this.pluginCallbacks.push(callback);
      }
      return this;
    }
    unregister(callback) {
      if (this.pluginCallbacks.indexOf(callback) !== -1) {
        this.pluginCallbacks.splice(this.pluginCallbacks.indexOf(callback), 1);
      }
      return this;
    }
    /**
     * Parse scenes and generate GLTF output
     * @param  {Scene or [THREE.Scenes]} input   Scene or Array of THREE.Scenes
     * @param  {Function} onDone  Callback on completed
     * @param  {Function} onError  Callback on errors
     * @param  {Object} options options
     */
    parse(input, onDone, onError, options) {
      const writer = new GLTFWriter();
      const plugins = [];
      for (let i = 0, il = this.pluginCallbacks.length; i < il; i++) {
        plugins.push(this.pluginCallbacks[i](writer));
      }
      writer.setPlugins(plugins);
      writer.write(input, onDone, options).catch(onError);
    }
    parseAsync(input, options) {
      const scope = this;
      return new Promise(function(resolve, reject) {
        scope.parse(input, resolve, reject, options);
      });
    }
  };
  var WEBGL_CONSTANTS = {
    POINTS: 0,
    LINES: 1,
    LINE_LOOP: 2,
    LINE_STRIP: 3,
    TRIANGLES: 4,
    TRIANGLE_STRIP: 5,
    TRIANGLE_FAN: 6,
    BYTE: 5120,
    UNSIGNED_BYTE: 5121,
    SHORT: 5122,
    UNSIGNED_SHORT: 5123,
    INT: 5124,
    UNSIGNED_INT: 5125,
    FLOAT: 5126,
    ARRAY_BUFFER: 34962,
    ELEMENT_ARRAY_BUFFER: 34963,
    NEAREST: 9728,
    LINEAR: 9729,
    NEAREST_MIPMAP_NEAREST: 9984,
    LINEAR_MIPMAP_NEAREST: 9985,
    NEAREST_MIPMAP_LINEAR: 9986,
    LINEAR_MIPMAP_LINEAR: 9987,
    CLAMP_TO_EDGE: 33071,
    MIRRORED_REPEAT: 33648,
    REPEAT: 10497
  };
  var KHR_MESH_QUANTIZATION = "KHR_mesh_quantization";
  var THREE_TO_WEBGL = {};
  THREE_TO_WEBGL[NearestFilter] = WEBGL_CONSTANTS.NEAREST;
  THREE_TO_WEBGL[NearestMipmapNearestFilter] = WEBGL_CONSTANTS.NEAREST_MIPMAP_NEAREST;
  THREE_TO_WEBGL[NearestMipmapLinearFilter] = WEBGL_CONSTANTS.NEAREST_MIPMAP_LINEAR;
  THREE_TO_WEBGL[LinearFilter] = WEBGL_CONSTANTS.LINEAR;
  THREE_TO_WEBGL[LinearMipmapNearestFilter] = WEBGL_CONSTANTS.LINEAR_MIPMAP_NEAREST;
  THREE_TO_WEBGL[LinearMipmapLinearFilter] = WEBGL_CONSTANTS.LINEAR_MIPMAP_LINEAR;
  THREE_TO_WEBGL[ClampToEdgeWrapping] = WEBGL_CONSTANTS.CLAMP_TO_EDGE;
  THREE_TO_WEBGL[RepeatWrapping] = WEBGL_CONSTANTS.REPEAT;
  THREE_TO_WEBGL[MirroredRepeatWrapping] = WEBGL_CONSTANTS.MIRRORED_REPEAT;
  var PATH_PROPERTIES = {
    scale: "scale",
    position: "translation",
    quaternion: "rotation",
    morphTargetInfluences: "weights"
  };
  var DEFAULT_SPECULAR_COLOR = new Color();
  var GLB_HEADER_BYTES = 12;
  var GLB_HEADER_MAGIC = 1179937895;
  var GLB_VERSION = 2;
  var GLB_CHUNK_PREFIX_BYTES = 8;
  var GLB_CHUNK_TYPE_JSON = 1313821514;
  var GLB_CHUNK_TYPE_BIN = 5130562;
  function equalArray(array1, array2) {
    return array1.length === array2.length && array1.every(function(element, index) {
      return element === array2[index];
    });
  }
  function stringToArrayBuffer(text) {
    return new TextEncoder().encode(text).buffer;
  }
  function isIdentityMatrix(matrix) {
    return equalArray(matrix.elements, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]);
  }
  function getMinMax(attribute, start, count) {
    const output = {
      min: new Array(attribute.itemSize).fill(Number.POSITIVE_INFINITY),
      max: new Array(attribute.itemSize).fill(Number.NEGATIVE_INFINITY)
    };
    for (let i = start; i < start + count; i++) {
      for (let a = 0; a < attribute.itemSize; a++) {
        let value;
        if (attribute.itemSize > 4) {
          value = attribute.array[i * attribute.itemSize + a];
        } else {
          if (a === 0) value = attribute.getX(i);
          else if (a === 1) value = attribute.getY(i);
          else if (a === 2) value = attribute.getZ(i);
          else if (a === 3) value = attribute.getW(i);
          if (attribute.normalized === true) {
            value = MathUtils.normalize(value, attribute.array);
          }
        }
        output.min[a] = Math.min(output.min[a], value);
        output.max[a] = Math.max(output.max[a], value);
      }
    }
    return output;
  }
  function getPaddedBufferSize(bufferSize) {
    return Math.ceil(bufferSize / 4) * 4;
  }
  function getPaddedArrayBuffer(arrayBuffer, paddingByte = 0) {
    const paddedLength = getPaddedBufferSize(arrayBuffer.byteLength);
    if (paddedLength !== arrayBuffer.byteLength) {
      const array = new Uint8Array(paddedLength);
      array.set(new Uint8Array(arrayBuffer));
      if (paddingByte !== 0) {
        for (let i = arrayBuffer.byteLength; i < paddedLength; i++) {
          array[i] = paddingByte;
        }
      }
      return array.buffer;
    }
    return arrayBuffer;
  }
  function getCanvas() {
    if (typeof document === "undefined" && typeof OffscreenCanvas !== "undefined") {
      return new OffscreenCanvas(1, 1);
    }
    return document.createElement("canvas");
  }
  function getToBlobPromise(canvas, mimeType) {
    if (canvas.toBlob !== void 0) {
      return new Promise((resolve) => canvas.toBlob(resolve, mimeType));
    }
    let quality;
    if (mimeType === "image/jpeg") {
      quality = 0.92;
    } else if (mimeType === "image/webp") {
      quality = 0.8;
    }
    return canvas.convertToBlob({
      type: mimeType,
      quality
    });
  }
  var GLTFWriter = class {
    constructor() {
      this.plugins = [];
      this.options = {};
      this.pending = [];
      this.buffers = [];
      this.byteOffset = 0;
      this.buffers = [];
      this.nodeMap = /* @__PURE__ */ new Map();
      this.skins = [];
      this.extensionsUsed = {};
      this.extensionsRequired = {};
      this.uids = /* @__PURE__ */ new Map();
      this.uid = 0;
      this.json = {
        asset: {
          version: "2.0",
          generator: "THREE.GLTFExporter"
        }
      };
      this.cache = {
        meshes: /* @__PURE__ */ new Map(),
        attributes: /* @__PURE__ */ new Map(),
        attributesNormalized: /* @__PURE__ */ new Map(),
        materials: /* @__PURE__ */ new Map(),
        textures: /* @__PURE__ */ new Map(),
        images: /* @__PURE__ */ new Map()
      };
    }
    setPlugins(plugins) {
      this.plugins = plugins;
    }
    /**
     * Parse scenes and generate GLTF output
     * @param  {Scene or [THREE.Scenes]} input   Scene or Array of THREE.Scenes
     * @param  {Function} onDone  Callback on completed
     * @param  {Object} options options
     */
    async write(input, onDone, options = {}) {
      this.options = Object.assign({
        // default options
        binary: false,
        trs: false,
        onlyVisible: true,
        maxTextureSize: Infinity,
        animations: [],
        includeCustomExtensions: false
      }, options);
      if (this.options.animations.length > 0) {
        this.options.trs = true;
      }
      this.processInput(input);
      await Promise.all(this.pending);
      const writer = this;
      const buffers = writer.buffers;
      const json = writer.json;
      options = writer.options;
      const extensionsUsed = writer.extensionsUsed;
      const extensionsRequired = writer.extensionsRequired;
      const blob = new Blob(buffers, { type: "application/octet-stream" });
      const extensionsUsedList = Object.keys(extensionsUsed);
      const extensionsRequiredList = Object.keys(extensionsRequired);
      if (extensionsUsedList.length > 0) json.extensionsUsed = extensionsUsedList;
      if (extensionsRequiredList.length > 0) json.extensionsRequired = extensionsRequiredList;
      if (json.buffers && json.buffers.length > 0) json.buffers[0].byteLength = blob.size;
      if (options.binary === true) {
        const reader = new FileReader();
        reader.readAsArrayBuffer(blob);
        reader.onloadend = function() {
          const binaryChunk = getPaddedArrayBuffer(reader.result);
          const binaryChunkPrefix = new DataView(new ArrayBuffer(GLB_CHUNK_PREFIX_BYTES));
          binaryChunkPrefix.setUint32(0, binaryChunk.byteLength, true);
          binaryChunkPrefix.setUint32(4, GLB_CHUNK_TYPE_BIN, true);
          const jsonChunk = getPaddedArrayBuffer(stringToArrayBuffer(JSON.stringify(json)), 32);
          const jsonChunkPrefix = new DataView(new ArrayBuffer(GLB_CHUNK_PREFIX_BYTES));
          jsonChunkPrefix.setUint32(0, jsonChunk.byteLength, true);
          jsonChunkPrefix.setUint32(4, GLB_CHUNK_TYPE_JSON, true);
          const header = new ArrayBuffer(GLB_HEADER_BYTES);
          const headerView = new DataView(header);
          headerView.setUint32(0, GLB_HEADER_MAGIC, true);
          headerView.setUint32(4, GLB_VERSION, true);
          const totalByteLength = GLB_HEADER_BYTES + jsonChunkPrefix.byteLength + jsonChunk.byteLength + binaryChunkPrefix.byteLength + binaryChunk.byteLength;
          headerView.setUint32(8, totalByteLength, true);
          const glbBlob = new Blob([
            header,
            jsonChunkPrefix,
            jsonChunk,
            binaryChunkPrefix,
            binaryChunk
          ], { type: "application/octet-stream" });
          const glbReader = new FileReader();
          glbReader.readAsArrayBuffer(glbBlob);
          glbReader.onloadend = function() {
            onDone(glbReader.result);
          };
        };
      } else {
        if (json.buffers && json.buffers.length > 0) {
          const reader = new FileReader();
          reader.readAsDataURL(blob);
          reader.onloadend = function() {
            const base64data = reader.result;
            json.buffers[0].uri = base64data;
            onDone(json);
          };
        } else {
          onDone(json);
        }
      }
    }
    /**
     * Serializes a userData.
     *
     * @param {THREE.Object3D|THREE.Material} object
     * @param {Object} objectDef
     */
    serializeUserData(object, objectDef) {
      if (Object.keys(object.userData).length === 0) return;
      const options = this.options;
      const extensionsUsed = this.extensionsUsed;
      try {
        const json = JSON.parse(JSON.stringify(object.userData));
        if (options.includeCustomExtensions && json.gltfExtensions) {
          if (objectDef.extensions === void 0) objectDef.extensions = {};
          for (const extensionName in json.gltfExtensions) {
            objectDef.extensions[extensionName] = json.gltfExtensions[extensionName];
            extensionsUsed[extensionName] = true;
          }
          delete json.gltfExtensions;
        }
        if (Object.keys(json).length > 0) objectDef.extras = json;
      } catch (error) {
        console.warn("THREE.GLTFExporter: userData of '" + object.name + "' won't be serialized because of JSON.stringify error - " + error.message);
      }
    }
    /**
     * Returns ids for buffer attributes.
     * @param  {Object} object
     * @return {Integer}
     */
    getUID(attribute, isRelativeCopy = false) {
      if (this.uids.has(attribute) === false) {
        const uids2 = /* @__PURE__ */ new Map();
        uids2.set(true, this.uid++);
        uids2.set(false, this.uid++);
        this.uids.set(attribute, uids2);
      }
      const uids = this.uids.get(attribute);
      return uids.get(isRelativeCopy);
    }
    /**
     * Checks if normal attribute values are normalized.
     *
     * @param {BufferAttribute} normal
     * @returns {Boolean}
     */
    isNormalizedNormalAttribute(normal) {
      const cache = this.cache;
      if (cache.attributesNormalized.has(normal)) return false;
      const v = new Vector3();
      for (let i = 0, il = normal.count; i < il; i++) {
        if (Math.abs(v.fromBufferAttribute(normal, i).length() - 1) > 5e-4) return false;
      }
      return true;
    }
    /**
     * Creates normalized normal buffer attribute.
     *
     * @param {BufferAttribute} normal
     * @returns {BufferAttribute}
     *
     */
    createNormalizedNormalAttribute(normal) {
      const cache = this.cache;
      if (cache.attributesNormalized.has(normal)) return cache.attributesNormalized.get(normal);
      const attribute = normal.clone();
      const v = new Vector3();
      for (let i = 0, il = attribute.count; i < il; i++) {
        v.fromBufferAttribute(attribute, i);
        if (v.x === 0 && v.y === 0 && v.z === 0) {
          v.setX(1);
        } else {
          v.normalize();
        }
        attribute.setXYZ(i, v.x, v.y, v.z);
      }
      cache.attributesNormalized.set(normal, attribute);
      return attribute;
    }
    /**
     * Applies a texture transform, if present, to the map definition. Requires
     * the KHR_texture_transform extension.
     *
     * @param {Object} mapDef
     * @param {THREE.Texture} texture
     */
    applyTextureTransform(mapDef, texture) {
      let didTransform = false;
      const transformDef = {};
      if (texture.offset.x !== 0 || texture.offset.y !== 0) {
        transformDef.offset = texture.offset.toArray();
        didTransform = true;
      }
      if (texture.rotation !== 0) {
        transformDef.rotation = texture.rotation;
        didTransform = true;
      }
      if (texture.repeat.x !== 1 || texture.repeat.y !== 1) {
        transformDef.scale = texture.repeat.toArray();
        didTransform = true;
      }
      if (didTransform) {
        mapDef.extensions = mapDef.extensions || {};
        mapDef.extensions["KHR_texture_transform"] = transformDef;
        this.extensionsUsed["KHR_texture_transform"] = true;
      }
    }
    buildMetalRoughTexture(metalnessMap, roughnessMap) {
      if (metalnessMap === roughnessMap) return metalnessMap;
      function getEncodingConversion(map) {
        if (map.colorSpace === SRGBColorSpace) {
          return function SRGBToLinear2(c) {
            return c < 0.04045 ? c * 0.0773993808 : Math.pow(c * 0.9478672986 + 0.0521327014, 2.4);
          };
        }
        return function LinearToLinear(c) {
          return c;
        };
      }
      console.warn("THREE.GLTFExporter: Merged metalnessMap and roughnessMap textures.");
      if (metalnessMap instanceof CompressedTexture) {
        metalnessMap = decompress(metalnessMap);
      }
      if (roughnessMap instanceof CompressedTexture) {
        roughnessMap = decompress(roughnessMap);
      }
      const metalness = metalnessMap ? metalnessMap.image : null;
      const roughness = roughnessMap ? roughnessMap.image : null;
      const width = Math.max(metalness ? metalness.width : 0, roughness ? roughness.width : 0);
      const height = Math.max(metalness ? metalness.height : 0, roughness ? roughness.height : 0);
      const canvas = getCanvas();
      canvas.width = width;
      canvas.height = height;
      const context = canvas.getContext("2d");
      context.fillStyle = "#00ffff";
      context.fillRect(0, 0, width, height);
      const composite = context.getImageData(0, 0, width, height);
      if (metalness) {
        context.drawImage(metalness, 0, 0, width, height);
        const convert = getEncodingConversion(metalnessMap);
        const data = context.getImageData(0, 0, width, height).data;
        for (let i = 2; i < data.length; i += 4) {
          composite.data[i] = convert(data[i] / 256) * 256;
        }
      }
      if (roughness) {
        context.drawImage(roughness, 0, 0, width, height);
        const convert = getEncodingConversion(roughnessMap);
        const data = context.getImageData(0, 0, width, height).data;
        for (let i = 1; i < data.length; i += 4) {
          composite.data[i] = convert(data[i] / 256) * 256;
        }
      }
      context.putImageData(composite, 0, 0);
      const reference = metalnessMap || roughnessMap;
      const texture = reference.clone();
      texture.source = new Source(canvas);
      texture.colorSpace = NoColorSpace;
      texture.channel = (metalnessMap || roughnessMap).channel;
      if (metalnessMap && roughnessMap && metalnessMap.channel !== roughnessMap.channel) {
        console.warn("THREE.GLTFExporter: UV channels for metalnessMap and roughnessMap textures must match.");
      }
      return texture;
    }
    /**
     * Process a buffer to append to the default one.
     * @param  {ArrayBuffer} buffer
     * @return {Integer}
     */
    processBuffer(buffer) {
      const json = this.json;
      const buffers = this.buffers;
      if (!json.buffers) json.buffers = [{ byteLength: 0 }];
      buffers.push(buffer);
      return 0;
    }
    /**
     * Process and generate a BufferView
     * @param  {BufferAttribute} attribute
     * @param  {number} componentType
     * @param  {number} start
     * @param  {number} count
     * @param  {number} target (Optional) Target usage of the BufferView
     * @return {Object}
     */
    processBufferView(attribute, componentType, start, count, target) {
      const json = this.json;
      if (!json.bufferViews) json.bufferViews = [];
      let componentSize;
      switch (componentType) {
        case WEBGL_CONSTANTS.BYTE:
        case WEBGL_CONSTANTS.UNSIGNED_BYTE:
          componentSize = 1;
          break;
        case WEBGL_CONSTANTS.SHORT:
        case WEBGL_CONSTANTS.UNSIGNED_SHORT:
          componentSize = 2;
          break;
        default:
          componentSize = 4;
      }
      const byteLength = getPaddedBufferSize(count * attribute.itemSize * componentSize);
      const dataView = new DataView(new ArrayBuffer(byteLength));
      let offset = 0;
      for (let i = start; i < start + count; i++) {
        for (let a = 0; a < attribute.itemSize; a++) {
          let value;
          if (attribute.itemSize > 4) {
            value = attribute.array[i * attribute.itemSize + a];
          } else {
            if (a === 0) value = attribute.getX(i);
            else if (a === 1) value = attribute.getY(i);
            else if (a === 2) value = attribute.getZ(i);
            else if (a === 3) value = attribute.getW(i);
            if (attribute.normalized === true) {
              value = MathUtils.normalize(value, attribute.array);
            }
          }
          if (componentType === WEBGL_CONSTANTS.FLOAT) {
            dataView.setFloat32(offset, value, true);
          } else if (componentType === WEBGL_CONSTANTS.INT) {
            dataView.setInt32(offset, value, true);
          } else if (componentType === WEBGL_CONSTANTS.UNSIGNED_INT) {
            dataView.setUint32(offset, value, true);
          } else if (componentType === WEBGL_CONSTANTS.SHORT) {
            dataView.setInt16(offset, value, true);
          } else if (componentType === WEBGL_CONSTANTS.UNSIGNED_SHORT) {
            dataView.setUint16(offset, value, true);
          } else if (componentType === WEBGL_CONSTANTS.BYTE) {
            dataView.setInt8(offset, value);
          } else if (componentType === WEBGL_CONSTANTS.UNSIGNED_BYTE) {
            dataView.setUint8(offset, value);
          }
          offset += componentSize;
        }
      }
      const bufferViewDef = {
        buffer: this.processBuffer(dataView.buffer),
        byteOffset: this.byteOffset,
        byteLength
      };
      if (target !== void 0) bufferViewDef.target = target;
      if (target === WEBGL_CONSTANTS.ARRAY_BUFFER) {
        bufferViewDef.byteStride = attribute.itemSize * componentSize;
      }
      this.byteOffset += byteLength;
      json.bufferViews.push(bufferViewDef);
      const output = {
        id: json.bufferViews.length - 1,
        byteLength: 0
      };
      return output;
    }
    /**
     * Process and generate a BufferView from an image Blob.
     * @param {Blob} blob
     * @return {Promise<Integer>}
     */
    processBufferViewImage(blob) {
      const writer = this;
      const json = writer.json;
      if (!json.bufferViews) json.bufferViews = [];
      return new Promise(function(resolve) {
        const reader = new FileReader();
        reader.readAsArrayBuffer(blob);
        reader.onloadend = function() {
          const buffer = getPaddedArrayBuffer(reader.result);
          const bufferViewDef = {
            buffer: writer.processBuffer(buffer),
            byteOffset: writer.byteOffset,
            byteLength: buffer.byteLength
          };
          writer.byteOffset += buffer.byteLength;
          resolve(json.bufferViews.push(bufferViewDef) - 1);
        };
      });
    }
    /**
     * Process attribute to generate an accessor
     * @param  {BufferAttribute} attribute Attribute to process
     * @param  {THREE.BufferGeometry} geometry (Optional) Geometry used for truncated draw range
     * @param  {Integer} start (Optional)
     * @param  {Integer} count (Optional)
     * @return {Integer|null} Index of the processed accessor on the "accessors" array
     */
    processAccessor(attribute, geometry, start, count) {
      const json = this.json;
      const types = {
        1: "SCALAR",
        2: "VEC2",
        3: "VEC3",
        4: "VEC4",
        9: "MAT3",
        16: "MAT4"
      };
      let componentType;
      if (attribute.array.constructor === Float32Array) {
        componentType = WEBGL_CONSTANTS.FLOAT;
      } else if (attribute.array.constructor === Int32Array) {
        componentType = WEBGL_CONSTANTS.INT;
      } else if (attribute.array.constructor === Uint32Array) {
        componentType = WEBGL_CONSTANTS.UNSIGNED_INT;
      } else if (attribute.array.constructor === Int16Array) {
        componentType = WEBGL_CONSTANTS.SHORT;
      } else if (attribute.array.constructor === Uint16Array) {
        componentType = WEBGL_CONSTANTS.UNSIGNED_SHORT;
      } else if (attribute.array.constructor === Int8Array) {
        componentType = WEBGL_CONSTANTS.BYTE;
      } else if (attribute.array.constructor === Uint8Array) {
        componentType = WEBGL_CONSTANTS.UNSIGNED_BYTE;
      } else {
        throw new Error("THREE.GLTFExporter: Unsupported bufferAttribute component type: " + attribute.array.constructor.name);
      }
      if (start === void 0) start = 0;
      if (count === void 0 || count === Infinity) count = attribute.count;
      if (count === 0) return null;
      const minMax = getMinMax(attribute, start, count);
      let bufferViewTarget;
      if (geometry !== void 0) {
        bufferViewTarget = attribute === geometry.index ? WEBGL_CONSTANTS.ELEMENT_ARRAY_BUFFER : WEBGL_CONSTANTS.ARRAY_BUFFER;
      }
      const bufferView = this.processBufferView(attribute, componentType, start, count, bufferViewTarget);
      const accessorDef = {
        bufferView: bufferView.id,
        byteOffset: bufferView.byteOffset,
        componentType,
        count,
        max: minMax.max,
        min: minMax.min,
        type: types[attribute.itemSize]
      };
      if (attribute.normalized === true) accessorDef.normalized = true;
      if (!json.accessors) json.accessors = [];
      return json.accessors.push(accessorDef) - 1;
    }
    /**
     * Process image
     * @param  {Image} image to process
     * @param  {Integer} format of the image (RGBAFormat)
     * @param  {Boolean} flipY before writing out the image
     * @param  {String} mimeType export format
     * @return {Integer}     Index of the processed texture in the "images" array
     */
    processImage(image, format, flipY, mimeType = "image/png") {
      if (image !== null) {
        const writer = this;
        const cache = writer.cache;
        const json = writer.json;
        const options = writer.options;
        const pending = writer.pending;
        if (!cache.images.has(image)) cache.images.set(image, {});
        const cachedImages = cache.images.get(image);
        const key = mimeType + ":flipY/" + flipY.toString();
        if (cachedImages[key] !== void 0) return cachedImages[key];
        if (!json.images) json.images = [];
        const imageDef = { mimeType };
        const canvas = getCanvas();
        canvas.width = Math.min(image.width, options.maxTextureSize);
        canvas.height = Math.min(image.height, options.maxTextureSize);
        const ctx = canvas.getContext("2d");
        if (flipY === true) {
          ctx.translate(0, canvas.height);
          ctx.scale(1, -1);
        }
        if (image.data !== void 0) {
          if (format !== RGBAFormat) {
            console.error("GLTFExporter: Only RGBAFormat is supported.", format);
          }
          if (image.width > options.maxTextureSize || image.height > options.maxTextureSize) {
            console.warn("GLTFExporter: Image size is bigger than maxTextureSize", image);
          }
          const data = new Uint8ClampedArray(image.height * image.width * 4);
          for (let i = 0; i < data.length; i += 4) {
            data[i + 0] = image.data[i + 0];
            data[i + 1] = image.data[i + 1];
            data[i + 2] = image.data[i + 2];
            data[i + 3] = image.data[i + 3];
          }
          ctx.putImageData(new ImageData(data, image.width, image.height), 0, 0);
        } else {
          ctx.drawImage(image, 0, 0, canvas.width, canvas.height);
        }
        if (options.binary === true) {
          pending.push(
            getToBlobPromise(canvas, mimeType).then((blob) => writer.processBufferViewImage(blob)).then((bufferViewIndex) => {
              imageDef.bufferView = bufferViewIndex;
            })
          );
        } else {
          if (canvas.toDataURL !== void 0) {
            imageDef.uri = canvas.toDataURL(mimeType);
          } else {
            pending.push(
              getToBlobPromise(canvas, mimeType).then((blob) => new FileReader().readAsDataURL(blob)).then((dataURL) => {
                imageDef.uri = dataURL;
              })
            );
          }
        }
        const index = json.images.push(imageDef) - 1;
        cachedImages[key] = index;
        return index;
      } else {
        throw new Error("THREE.GLTFExporter: No valid image data found. Unable to process texture.");
      }
    }
    /**
     * Process sampler
     * @param  {Texture} map Texture to process
     * @return {Integer}     Index of the processed texture in the "samplers" array
     */
    processSampler(map) {
      const json = this.json;
      if (!json.samplers) json.samplers = [];
      const samplerDef = {
        magFilter: THREE_TO_WEBGL[map.magFilter],
        minFilter: THREE_TO_WEBGL[map.minFilter],
        wrapS: THREE_TO_WEBGL[map.wrapS],
        wrapT: THREE_TO_WEBGL[map.wrapT]
      };
      return json.samplers.push(samplerDef) - 1;
    }
    /**
     * Process texture
     * @param  {Texture} map Map to process
     * @return {Integer} Index of the processed texture in the "textures" array
     */
    processTexture(map) {
      const writer = this;
      const options = writer.options;
      const cache = this.cache;
      const json = this.json;
      if (cache.textures.has(map)) return cache.textures.get(map);
      if (!json.textures) json.textures = [];
      if (map instanceof CompressedTexture) {
        map = decompress(map, options.maxTextureSize);
      }
      let mimeType = map.userData.mimeType;
      if (mimeType === "image/webp") mimeType = "image/png";
      const textureDef = {
        sampler: this.processSampler(map),
        source: this.processImage(map.image, map.format, map.flipY, mimeType)
      };
      if (map.name) textureDef.name = map.name;
      this._invokeAll(function(ext) {
        ext.writeTexture && ext.writeTexture(map, textureDef);
      });
      const index = json.textures.push(textureDef) - 1;
      cache.textures.set(map, index);
      return index;
    }
    /**
     * Process material
     * @param  {THREE.Material} material Material to process
     * @return {Integer|null} Index of the processed material in the "materials" array
     */
    processMaterial(material) {
      const cache = this.cache;
      const json = this.json;
      if (cache.materials.has(material)) return cache.materials.get(material);
      if (material.isShaderMaterial) {
        console.warn("GLTFExporter: THREE.ShaderMaterial not supported.");
        return null;
      }
      if (!json.materials) json.materials = [];
      const materialDef = { pbrMetallicRoughness: {} };
      if (material.isMeshStandardMaterial !== true && material.isMeshBasicMaterial !== true) {
        console.warn("GLTFExporter: Use MeshStandardMaterial or MeshBasicMaterial for best results.");
      }
      const color = material.color.toArray().concat([material.opacity]);
      if (!equalArray(color, [1, 1, 1, 1])) {
        materialDef.pbrMetallicRoughness.baseColorFactor = color;
      }
      if (material.isMeshStandardMaterial) {
        materialDef.pbrMetallicRoughness.metallicFactor = material.metalness;
        materialDef.pbrMetallicRoughness.roughnessFactor = material.roughness;
      } else {
        materialDef.pbrMetallicRoughness.metallicFactor = 0.5;
        materialDef.pbrMetallicRoughness.roughnessFactor = 0.5;
      }
      if (material.metalnessMap || material.roughnessMap) {
        const metalRoughTexture = this.buildMetalRoughTexture(material.metalnessMap, material.roughnessMap);
        const metalRoughMapDef = {
          index: this.processTexture(metalRoughTexture),
          channel: metalRoughTexture.channel
        };
        this.applyTextureTransform(metalRoughMapDef, metalRoughTexture);
        materialDef.pbrMetallicRoughness.metallicRoughnessTexture = metalRoughMapDef;
      }
      if (material.map) {
        const baseColorMapDef = {
          index: this.processTexture(material.map),
          texCoord: material.map.channel
        };
        this.applyTextureTransform(baseColorMapDef, material.map);
        materialDef.pbrMetallicRoughness.baseColorTexture = baseColorMapDef;
      }
      if (material.emissive) {
        const emissive = material.emissive;
        const maxEmissiveComponent = Math.max(emissive.r, emissive.g, emissive.b);
        if (maxEmissiveComponent > 0) {
          materialDef.emissiveFactor = material.emissive.toArray();
        }
        if (material.emissiveMap) {
          const emissiveMapDef = {
            index: this.processTexture(material.emissiveMap),
            texCoord: material.emissiveMap.channel
          };
          this.applyTextureTransform(emissiveMapDef, material.emissiveMap);
          materialDef.emissiveTexture = emissiveMapDef;
        }
      }
      if (material.normalMap) {
        const normalMapDef = {
          index: this.processTexture(material.normalMap),
          texCoord: material.normalMap.channel
        };
        if (material.normalScale && material.normalScale.x !== 1) {
          normalMapDef.scale = material.normalScale.x;
        }
        this.applyTextureTransform(normalMapDef, material.normalMap);
        materialDef.normalTexture = normalMapDef;
      }
      if (material.aoMap) {
        const occlusionMapDef = {
          index: this.processTexture(material.aoMap),
          texCoord: material.aoMap.channel
        };
        if (material.aoMapIntensity !== 1) {
          occlusionMapDef.strength = material.aoMapIntensity;
        }
        this.applyTextureTransform(occlusionMapDef, material.aoMap);
        materialDef.occlusionTexture = occlusionMapDef;
      }
      if (material.transparent) {
        materialDef.alphaMode = "BLEND";
      } else {
        if (material.alphaTest > 0) {
          materialDef.alphaMode = "MASK";
          materialDef.alphaCutoff = material.alphaTest;
        }
      }
      if (material.side === DoubleSide) materialDef.doubleSided = true;
      if (material.name !== "") materialDef.name = material.name;
      this.serializeUserData(material, materialDef);
      this._invokeAll(function(ext) {
        ext.writeMaterial && ext.writeMaterial(material, materialDef);
      });
      const index = json.materials.push(materialDef) - 1;
      cache.materials.set(material, index);
      return index;
    }
    /**
     * Process mesh
     * @param  {THREE.Mesh} mesh Mesh to process
     * @return {Integer|null} Index of the processed mesh in the "meshes" array
     */
    processMesh(mesh) {
      const cache = this.cache;
      const json = this.json;
      const meshCacheKeyParts = [mesh.geometry.uuid];
      if (Array.isArray(mesh.material)) {
        for (let i = 0, l = mesh.material.length; i < l; i++) {
          meshCacheKeyParts.push(mesh.material[i].uuid);
        }
      } else {
        meshCacheKeyParts.push(mesh.material.uuid);
      }
      const meshCacheKey = meshCacheKeyParts.join(":");
      if (cache.meshes.has(meshCacheKey)) return cache.meshes.get(meshCacheKey);
      const geometry = mesh.geometry;
      let mode;
      if (mesh.isLineSegments) {
        mode = WEBGL_CONSTANTS.LINES;
      } else if (mesh.isLineLoop) {
        mode = WEBGL_CONSTANTS.LINE_LOOP;
      } else if (mesh.isLine) {
        mode = WEBGL_CONSTANTS.LINE_STRIP;
      } else if (mesh.isPoints) {
        mode = WEBGL_CONSTANTS.POINTS;
      } else {
        mode = mesh.material.wireframe ? WEBGL_CONSTANTS.LINES : WEBGL_CONSTANTS.TRIANGLES;
      }
      const meshDef = {};
      const attributes = {};
      const primitives = [];
      const targets = [];
      const nameConversion = {
        uv: "TEXCOORD_0",
        uv1: "TEXCOORD_1",
        uv2: "TEXCOORD_2",
        uv3: "TEXCOORD_3",
        color: "COLOR_0",
        skinWeight: "WEIGHTS_0",
        skinIndex: "JOINTS_0"
      };
      const originalNormal = geometry.getAttribute("normal");
      if (originalNormal !== void 0 && !this.isNormalizedNormalAttribute(originalNormal)) {
        console.warn("THREE.GLTFExporter: Creating normalized normal attribute from the non-normalized one.");
        geometry.setAttribute("normal", this.createNormalizedNormalAttribute(originalNormal));
      }
      let modifiedAttribute = null;
      for (let attributeName in geometry.attributes) {
        if (attributeName.slice(0, 5) === "morph") continue;
        const attribute = geometry.attributes[attributeName];
        attributeName = nameConversion[attributeName] || attributeName.toUpperCase();
        const validVertexAttributes = /^(POSITION|NORMAL|TANGENT|TEXCOORD_\d+|COLOR_\d+|JOINTS_\d+|WEIGHTS_\d+)$/;
        if (!validVertexAttributes.test(attributeName)) attributeName = "_" + attributeName;
        if (cache.attributes.has(this.getUID(attribute))) {
          attributes[attributeName] = cache.attributes.get(this.getUID(attribute));
          continue;
        }
        modifiedAttribute = null;
        const array = attribute.array;
        if (attributeName === "JOINTS_0" && !(array instanceof Uint16Array) && !(array instanceof Uint8Array)) {
          console.warn('GLTFExporter: Attribute "skinIndex" converted to type UNSIGNED_SHORT.');
          modifiedAttribute = new BufferAttribute(new Uint16Array(array), attribute.itemSize, attribute.normalized);
        }
        const accessor = this.processAccessor(modifiedAttribute || attribute, geometry);
        if (accessor !== null) {
          if (!attributeName.startsWith("_")) {
            this.detectMeshQuantization(attributeName, attribute);
          }
          attributes[attributeName] = accessor;
          cache.attributes.set(this.getUID(attribute), accessor);
        }
      }
      if (originalNormal !== void 0) geometry.setAttribute("normal", originalNormal);
      if (Object.keys(attributes).length === 0) return null;
      if (mesh.morphTargetInfluences !== void 0 && mesh.morphTargetInfluences.length > 0) {
        const weights = [];
        const targetNames = [];
        const reverseDictionary = {};
        if (mesh.morphTargetDictionary !== void 0) {
          for (const key in mesh.morphTargetDictionary) {
            reverseDictionary[mesh.morphTargetDictionary[key]] = key;
          }
        }
        for (let i = 0; i < mesh.morphTargetInfluences.length; ++i) {
          const target = {};
          let warned = false;
          for (const attributeName in geometry.morphAttributes) {
            if (attributeName !== "position" && attributeName !== "normal") {
              if (!warned) {
                console.warn("GLTFExporter: Only POSITION and NORMAL morph are supported.");
                warned = true;
              }
              continue;
            }
            const attribute = geometry.morphAttributes[attributeName][i];
            const gltfAttributeName = attributeName.toUpperCase();
            const baseAttribute = geometry.attributes[attributeName];
            if (cache.attributes.has(this.getUID(attribute, true))) {
              target[gltfAttributeName] = cache.attributes.get(this.getUID(attribute, true));
              continue;
            }
            const relativeAttribute = attribute.clone();
            if (!geometry.morphTargetsRelative) {
              for (let j = 0, jl = attribute.count; j < jl; j++) {
                for (let a = 0; a < attribute.itemSize; a++) {
                  if (a === 0) relativeAttribute.setX(j, attribute.getX(j) - baseAttribute.getX(j));
                  if (a === 1) relativeAttribute.setY(j, attribute.getY(j) - baseAttribute.getY(j));
                  if (a === 2) relativeAttribute.setZ(j, attribute.getZ(j) - baseAttribute.getZ(j));
                  if (a === 3) relativeAttribute.setW(j, attribute.getW(j) - baseAttribute.getW(j));
                }
              }
            }
            target[gltfAttributeName] = this.processAccessor(relativeAttribute, geometry);
            cache.attributes.set(this.getUID(baseAttribute, true), target[gltfAttributeName]);
          }
          targets.push(target);
          weights.push(mesh.morphTargetInfluences[i]);
          if (mesh.morphTargetDictionary !== void 0) targetNames.push(reverseDictionary[i]);
        }
        meshDef.weights = weights;
        if (targetNames.length > 0) {
          meshDef.extras = {};
          meshDef.extras.targetNames = targetNames;
        }
      }
      const isMultiMaterial = Array.isArray(mesh.material);
      if (isMultiMaterial && geometry.groups.length === 0) return null;
      let didForceIndices = false;
      if (isMultiMaterial && geometry.index === null) {
        const indices = [];
        for (let i = 0, il = geometry.attributes.position.count; i < il; i++) {
          indices[i] = i;
        }
        geometry.setIndex(indices);
        didForceIndices = true;
      }
      const materials = isMultiMaterial ? mesh.material : [mesh.material];
      const groups = isMultiMaterial ? geometry.groups : [{ materialIndex: 0, start: void 0, count: void 0 }];
      for (let i = 0, il = groups.length; i < il; i++) {
        const primitive = {
          mode,
          attributes
        };
        this.serializeUserData(geometry, primitive);
        if (targets.length > 0) primitive.targets = targets;
        if (geometry.index !== null) {
          let cacheKey = this.getUID(geometry.index);
          if (groups[i].start !== void 0 || groups[i].count !== void 0) {
            cacheKey += ":" + groups[i].start + ":" + groups[i].count;
          }
          if (cache.attributes.has(cacheKey)) {
            primitive.indices = cache.attributes.get(cacheKey);
          } else {
            primitive.indices = this.processAccessor(geometry.index, geometry, groups[i].start, groups[i].count);
            cache.attributes.set(cacheKey, primitive.indices);
          }
          if (primitive.indices === null) delete primitive.indices;
        }
        const material = this.processMaterial(materials[groups[i].materialIndex]);
        if (material !== null) primitive.material = material;
        primitives.push(primitive);
      }
      if (didForceIndices === true) {
        geometry.setIndex(null);
      }
      meshDef.primitives = primitives;
      if (!json.meshes) json.meshes = [];
      this._invokeAll(function(ext) {
        ext.writeMesh && ext.writeMesh(mesh, meshDef);
      });
      const index = json.meshes.push(meshDef) - 1;
      cache.meshes.set(meshCacheKey, index);
      return index;
    }
    /**
     * If a vertex attribute with a
     * [non-standard data type](https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html#meshes-overview)
     * is used, it is checked whether it is a valid data type according to the
     * [KHR_mesh_quantization](https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_mesh_quantization/README.md)
     * extension.
     * In this case the extension is automatically added to the list of used extensions.
     *
     * @param {string} attributeName
     * @param {THREE.BufferAttribute} attribute
     */
    detectMeshQuantization(attributeName, attribute) {
      if (this.extensionsUsed[KHR_MESH_QUANTIZATION]) return;
      let attrType = void 0;
      switch (attribute.array.constructor) {
        case Int8Array:
          attrType = "byte";
          break;
        case Uint8Array:
          attrType = "unsigned byte";
          break;
        case Int16Array:
          attrType = "short";
          break;
        case Uint16Array:
          attrType = "unsigned short";
          break;
        default:
          return;
      }
      if (attribute.normalized) attrType += " normalized";
      const attrNamePrefix = attributeName.split("_", 1)[0];
      if (KHR_mesh_quantization_ExtraAttrTypes[attrNamePrefix] && KHR_mesh_quantization_ExtraAttrTypes[attrNamePrefix].includes(attrType)) {
        this.extensionsUsed[KHR_MESH_QUANTIZATION] = true;
        this.extensionsRequired[KHR_MESH_QUANTIZATION] = true;
      }
    }
    /**
     * Process camera
     * @param  {THREE.Camera} camera Camera to process
     * @return {Integer}      Index of the processed mesh in the "camera" array
     */
    processCamera(camera) {
      const json = this.json;
      if (!json.cameras) json.cameras = [];
      const isOrtho = camera.isOrthographicCamera;
      const cameraDef = {
        type: isOrtho ? "orthographic" : "perspective"
      };
      if (isOrtho) {
        cameraDef.orthographic = {
          xmag: camera.right * 2,
          ymag: camera.top * 2,
          zfar: camera.far <= 0 ? 1e-3 : camera.far,
          znear: camera.near < 0 ? 0 : camera.near
        };
      } else {
        cameraDef.perspective = {
          aspectRatio: camera.aspect,
          yfov: MathUtils.degToRad(camera.fov),
          zfar: camera.far <= 0 ? 1e-3 : camera.far,
          znear: camera.near < 0 ? 0 : camera.near
        };
      }
      if (camera.name !== "") cameraDef.name = camera.type;
      return json.cameras.push(cameraDef) - 1;
    }
    /**
     * Creates glTF animation entry from AnimationClip object.
     *
     * Status:
     * - Only properties listed in PATH_PROPERTIES may be animated.
     *
     * @param {THREE.AnimationClip} clip
     * @param {THREE.Object3D} root
     * @return {number|null}
     */
    processAnimation(clip, root) {
      const json = this.json;
      const nodeMap = this.nodeMap;
      if (!json.animations) json.animations = [];
      clip = GLTFExporter.Utils.mergeMorphTargetTracks(clip.clone(), root);
      const tracks = clip.tracks;
      const channels = [];
      const samplers = [];
      for (let i = 0; i < tracks.length; ++i) {
        const track = tracks[i];
        const trackBinding = PropertyBinding.parseTrackName(track.name);
        let trackNode = PropertyBinding.findNode(root, trackBinding.nodeName);
        const trackProperty = PATH_PROPERTIES[trackBinding.propertyName];
        if (trackBinding.objectName === "bones") {
          if (trackNode.isSkinnedMesh === true) {
            trackNode = trackNode.skeleton.getBoneByName(trackBinding.objectIndex);
          } else {
            trackNode = void 0;
          }
        }
        if (!trackNode || !trackProperty) {
          console.warn('THREE.GLTFExporter: Could not export animation track "%s".', track.name);
          return null;
        }
        const inputItemSize = 1;
        let outputItemSize = track.values.length / track.times.length;
        if (trackProperty === PATH_PROPERTIES.morphTargetInfluences) {
          outputItemSize /= trackNode.morphTargetInfluences.length;
        }
        let interpolation;
        if (track.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline === true) {
          interpolation = "CUBICSPLINE";
          outputItemSize /= 3;
        } else if (track.getInterpolation() === InterpolateDiscrete) {
          interpolation = "STEP";
        } else {
          interpolation = "LINEAR";
        }
        samplers.push({
          input: this.processAccessor(new BufferAttribute(track.times, inputItemSize)),
          output: this.processAccessor(new BufferAttribute(track.values, outputItemSize)),
          interpolation
        });
        channels.push({
          sampler: samplers.length - 1,
          target: {
            node: nodeMap.get(trackNode),
            path: trackProperty
          }
        });
      }
      json.animations.push({
        name: clip.name || "clip_" + json.animations.length,
        samplers,
        channels
      });
      return json.animations.length - 1;
    }
    /**
     * @param {THREE.Object3D} object
     * @return {number|null}
     */
    processSkin(object) {
      const json = this.json;
      const nodeMap = this.nodeMap;
      const node = json.nodes[nodeMap.get(object)];
      const skeleton = object.skeleton;
      if (skeleton === void 0) return null;
      const rootJoint = object.skeleton.bones[0];
      if (rootJoint === void 0) return null;
      const joints = [];
      const inverseBindMatrices = new Float32Array(skeleton.bones.length * 16);
      const temporaryBoneInverse = new Matrix4();
      for (let i = 0; i < skeleton.bones.length; ++i) {
        joints.push(nodeMap.get(skeleton.bones[i]));
        temporaryBoneInverse.copy(skeleton.boneInverses[i]);
        temporaryBoneInverse.multiply(object.bindMatrix).toArray(inverseBindMatrices, i * 16);
      }
      if (json.skins === void 0) json.skins = [];
      json.skins.push({
        inverseBindMatrices: this.processAccessor(new BufferAttribute(inverseBindMatrices, 16)),
        joints,
        skeleton: nodeMap.get(rootJoint)
      });
      const skinIndex = node.skin = json.skins.length - 1;
      return skinIndex;
    }
    /**
     * Process Object3D node
     * @param  {THREE.Object3D} node Object3D to processNode
     * @return {Integer} Index of the node in the nodes list
     */
    processNode(object) {
      const json = this.json;
      const options = this.options;
      const nodeMap = this.nodeMap;
      if (!json.nodes) json.nodes = [];
      const nodeDef = {};
      if (options.trs) {
        const rotation = object.quaternion.toArray();
        const position = object.position.toArray();
        const scale = object.scale.toArray();
        if (!equalArray(rotation, [0, 0, 0, 1])) {
          nodeDef.rotation = rotation;
        }
        if (!equalArray(position, [0, 0, 0])) {
          nodeDef.translation = position;
        }
        if (!equalArray(scale, [1, 1, 1])) {
          nodeDef.scale = scale;
        }
      } else {
        if (object.matrixAutoUpdate) {
          object.updateMatrix();
        }
        if (isIdentityMatrix(object.matrix) === false) {
          nodeDef.matrix = object.matrix.elements;
        }
      }
      if (object.name !== "") nodeDef.name = String(object.name);
      this.serializeUserData(object, nodeDef);
      if (object.isMesh || object.isLine || object.isPoints) {
        const meshIndex = this.processMesh(object);
        if (meshIndex !== null) nodeDef.mesh = meshIndex;
      } else if (object.isCamera) {
        nodeDef.camera = this.processCamera(object);
      }
      if (object.isSkinnedMesh) this.skins.push(object);
      if (object.children.length > 0) {
        const children = [];
        for (let i = 0, l = object.children.length; i < l; i++) {
          const child = object.children[i];
          if (child.visible || options.onlyVisible === false) {
            const nodeIndex2 = this.processNode(child);
            if (nodeIndex2 !== null) children.push(nodeIndex2);
          }
        }
        if (children.length > 0) nodeDef.children = children;
      }
      this._invokeAll(function(ext) {
        ext.writeNode && ext.writeNode(object, nodeDef);
      });
      const nodeIndex = json.nodes.push(nodeDef) - 1;
      nodeMap.set(object, nodeIndex);
      return nodeIndex;
    }
    /**
     * Process Scene
     * @param  {Scene} node Scene to process
     */
    processScene(scene) {
      const json = this.json;
      const options = this.options;
      if (!json.scenes) {
        json.scenes = [];
        json.scene = 0;
      }
      const sceneDef = {};
      if (scene.name !== "") sceneDef.name = scene.name;
      json.scenes.push(sceneDef);
      const nodes = [];
      for (let i = 0, l = scene.children.length; i < l; i++) {
        const child = scene.children[i];
        if (child.visible || options.onlyVisible === false) {
          const nodeIndex = this.processNode(child);
          if (nodeIndex !== null) nodes.push(nodeIndex);
        }
      }
      if (nodes.length > 0) sceneDef.nodes = nodes;
      this.serializeUserData(scene, sceneDef);
    }
    /**
     * Creates a Scene to hold a list of objects and parse it
     * @param  {Array} objects List of objects to process
     */
    processObjects(objects) {
      const scene = new Scene();
      scene.name = "AuxScene";
      for (let i = 0; i < objects.length; i++) {
        scene.children.push(objects[i]);
      }
      this.processScene(scene);
    }
    /**
     * @param {THREE.Object3D|Array<THREE.Object3D>} input
     */
    processInput(input) {
      const options = this.options;
      input = input instanceof Array ? input : [input];
      this._invokeAll(function(ext) {
        ext.beforeParse && ext.beforeParse(input);
      });
      const objectsWithoutScene = [];
      for (let i = 0; i < input.length; i++) {
        if (input[i] instanceof Scene) {
          this.processScene(input[i]);
        } else {
          objectsWithoutScene.push(input[i]);
        }
      }
      if (objectsWithoutScene.length > 0) this.processObjects(objectsWithoutScene);
      for (let i = 0; i < this.skins.length; ++i) {
        this.processSkin(this.skins[i]);
      }
      for (let i = 0; i < options.animations.length; ++i) {
        this.processAnimation(options.animations[i], input[0]);
      }
      this._invokeAll(function(ext) {
        ext.afterParse && ext.afterParse(input);
      });
    }
    _invokeAll(func) {
      for (let i = 0, il = this.plugins.length; i < il; i++) {
        func(this.plugins[i]);
      }
    }
  };
  var GLTFLightExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_lights_punctual";
    }
    writeNode(light, nodeDef) {
      if (!light.isLight) return;
      if (!light.isDirectionalLight && !light.isPointLight && !light.isSpotLight) {
        console.warn("THREE.GLTFExporter: Only directional, point, and spot lights are supported.", light);
        return;
      }
      const writer = this.writer;
      const json = writer.json;
      const extensionsUsed = writer.extensionsUsed;
      const lightDef = {};
      if (light.name) lightDef.name = light.name;
      lightDef.color = light.color.toArray();
      lightDef.intensity = light.intensity;
      if (light.isDirectionalLight) {
        lightDef.type = "directional";
      } else if (light.isPointLight) {
        lightDef.type = "point";
        if (light.distance > 0) lightDef.range = light.distance;
      } else if (light.isSpotLight) {
        lightDef.type = "spot";
        if (light.distance > 0) lightDef.range = light.distance;
        lightDef.spot = {};
        lightDef.spot.innerConeAngle = (1 - light.penumbra) * light.angle;
        lightDef.spot.outerConeAngle = light.angle;
      }
      if (light.decay !== void 0 && light.decay !== 2) {
        console.warn("THREE.GLTFExporter: Light decay may be lost. glTF is physically-based, and expects light.decay=2.");
      }
      if (light.target && (light.target.parent !== light || light.target.position.x !== 0 || light.target.position.y !== 0 || light.target.position.z !== -1)) {
        console.warn("THREE.GLTFExporter: Light direction may be lost. For best results, make light.target a child of the light with position 0,0,-1.");
      }
      if (!extensionsUsed[this.name]) {
        json.extensions = json.extensions || {};
        json.extensions[this.name] = { lights: [] };
        extensionsUsed[this.name] = true;
      }
      const lights = json.extensions[this.name].lights;
      lights.push(lightDef);
      nodeDef.extensions = nodeDef.extensions || {};
      nodeDef.extensions[this.name] = { light: lights.length - 1 };
    }
  };
  var GLTFMaterialsUnlitExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_unlit";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshBasicMaterial) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = {};
      extensionsUsed[this.name] = true;
      materialDef.pbrMetallicRoughness.metallicFactor = 0;
      materialDef.pbrMetallicRoughness.roughnessFactor = 0.9;
    }
  };
  var GLTFMaterialsClearcoatExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_clearcoat";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshPhysicalMaterial || material.clearcoat === 0) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      extensionDef.clearcoatFactor = material.clearcoat;
      if (material.clearcoatMap) {
        const clearcoatMapDef = {
          index: writer.processTexture(material.clearcoatMap),
          texCoord: material.clearcoatMap.channel
        };
        writer.applyTextureTransform(clearcoatMapDef, material.clearcoatMap);
        extensionDef.clearcoatTexture = clearcoatMapDef;
      }
      extensionDef.clearcoatRoughnessFactor = material.clearcoatRoughness;
      if (material.clearcoatRoughnessMap) {
        const clearcoatRoughnessMapDef = {
          index: writer.processTexture(material.clearcoatRoughnessMap),
          texCoord: material.clearcoatRoughnessMap.channel
        };
        writer.applyTextureTransform(clearcoatRoughnessMapDef, material.clearcoatRoughnessMap);
        extensionDef.clearcoatRoughnessTexture = clearcoatRoughnessMapDef;
      }
      if (material.clearcoatNormalMap) {
        const clearcoatNormalMapDef = {
          index: writer.processTexture(material.clearcoatNormalMap),
          texCoord: material.clearcoatNormalMap.channel
        };
        writer.applyTextureTransform(clearcoatNormalMapDef, material.clearcoatNormalMap);
        extensionDef.clearcoatNormalTexture = clearcoatNormalMapDef;
      }
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMaterialsIridescenceExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_iridescence";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshPhysicalMaterial || material.iridescence === 0) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      extensionDef.iridescenceFactor = material.iridescence;
      if (material.iridescenceMap) {
        const iridescenceMapDef = {
          index: writer.processTexture(material.iridescenceMap),
          texCoord: material.iridescenceMap.channel
        };
        writer.applyTextureTransform(iridescenceMapDef, material.iridescenceMap);
        extensionDef.iridescenceTexture = iridescenceMapDef;
      }
      extensionDef.iridescenceIor = material.iridescenceIOR;
      extensionDef.iridescenceThicknessMinimum = material.iridescenceThicknessRange[0];
      extensionDef.iridescenceThicknessMaximum = material.iridescenceThicknessRange[1];
      if (material.iridescenceThicknessMap) {
        const iridescenceThicknessMapDef = {
          index: writer.processTexture(material.iridescenceThicknessMap),
          texCoord: material.iridescenceThicknessMap.channel
        };
        writer.applyTextureTransform(iridescenceThicknessMapDef, material.iridescenceThicknessMap);
        extensionDef.iridescenceThicknessTexture = iridescenceThicknessMapDef;
      }
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMaterialsTransmissionExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_transmission";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshPhysicalMaterial || material.transmission === 0) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      extensionDef.transmissionFactor = material.transmission;
      if (material.transmissionMap) {
        const transmissionMapDef = {
          index: writer.processTexture(material.transmissionMap),
          texCoord: material.transmissionMap.channel
        };
        writer.applyTextureTransform(transmissionMapDef, material.transmissionMap);
        extensionDef.transmissionTexture = transmissionMapDef;
      }
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMaterialsVolumeExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_volume";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshPhysicalMaterial || material.transmission === 0) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      extensionDef.thicknessFactor = material.thickness;
      if (material.thicknessMap) {
        const thicknessMapDef = {
          index: writer.processTexture(material.thicknessMap),
          texCoord: material.thicknessMap.channel
        };
        writer.applyTextureTransform(thicknessMapDef, material.thicknessMap);
        extensionDef.thicknessTexture = thicknessMapDef;
      }
      extensionDef.attenuationDistance = material.attenuationDistance;
      extensionDef.attenuationColor = material.attenuationColor.toArray();
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMaterialsIorExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_ior";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshPhysicalMaterial || material.ior === 1.5) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      extensionDef.ior = material.ior;
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMaterialsSpecularExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_specular";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshPhysicalMaterial || material.specularIntensity === 1 && material.specularColor.equals(DEFAULT_SPECULAR_COLOR) && !material.specularIntensityMap && !material.specularColorMap) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      if (material.specularIntensityMap) {
        const specularIntensityMapDef = {
          index: writer.processTexture(material.specularIntensityMap),
          texCoord: material.specularIntensityMap.channel
        };
        writer.applyTextureTransform(specularIntensityMapDef, material.specularIntensityMap);
        extensionDef.specularTexture = specularIntensityMapDef;
      }
      if (material.specularColorMap) {
        const specularColorMapDef = {
          index: writer.processTexture(material.specularColorMap),
          texCoord: material.specularColorMap.channel
        };
        writer.applyTextureTransform(specularColorMapDef, material.specularColorMap);
        extensionDef.specularColorTexture = specularColorMapDef;
      }
      extensionDef.specularFactor = material.specularIntensity;
      extensionDef.specularColorFactor = material.specularColor.toArray();
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMaterialsSheenExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_sheen";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshPhysicalMaterial || material.sheen == 0) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      if (material.sheenRoughnessMap) {
        const sheenRoughnessMapDef = {
          index: writer.processTexture(material.sheenRoughnessMap),
          texCoord: material.sheenRoughnessMap.channel
        };
        writer.applyTextureTransform(sheenRoughnessMapDef, material.sheenRoughnessMap);
        extensionDef.sheenRoughnessTexture = sheenRoughnessMapDef;
      }
      if (material.sheenColorMap) {
        const sheenColorMapDef = {
          index: writer.processTexture(material.sheenColorMap),
          texCoord: material.sheenColorMap.channel
        };
        writer.applyTextureTransform(sheenColorMapDef, material.sheenColorMap);
        extensionDef.sheenColorTexture = sheenColorMapDef;
      }
      extensionDef.sheenRoughnessFactor = material.sheenRoughness;
      extensionDef.sheenColorFactor = material.sheenColor.toArray();
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMaterialsAnisotropyExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_anisotropy";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshPhysicalMaterial || material.anisotropy == 0) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      if (material.anisotropyMap) {
        const anisotropyMapDef = { index: writer.processTexture(material.anisotropyMap) };
        writer.applyTextureTransform(anisotropyMapDef, material.anisotropyMap);
        extensionDef.anisotropyTexture = anisotropyMapDef;
      }
      extensionDef.anisotropyStrength = material.anisotropy;
      extensionDef.anisotropyRotation = material.anisotropyRotation;
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMaterialsEmissiveStrengthExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "KHR_materials_emissive_strength";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshStandardMaterial || material.emissiveIntensity === 1) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      extensionDef.emissiveStrength = material.emissiveIntensity;
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMaterialsBumpExtension = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "EXT_materials_bump";
    }
    writeMaterial(material, materialDef) {
      if (!material.isMeshStandardMaterial || material.bumpScale === 1 && !material.bumpMap) return;
      const writer = this.writer;
      const extensionsUsed = writer.extensionsUsed;
      const extensionDef = {};
      if (material.bumpMap) {
        const bumpMapDef = {
          index: writer.processTexture(material.bumpMap),
          texCoord: material.bumpMap.channel
        };
        writer.applyTextureTransform(bumpMapDef, material.bumpMap);
        extensionDef.bumpTexture = bumpMapDef;
      }
      extensionDef.bumpFactor = material.bumpScale;
      materialDef.extensions = materialDef.extensions || {};
      materialDef.extensions[this.name] = extensionDef;
      extensionsUsed[this.name] = true;
    }
  };
  var GLTFMeshGpuInstancing = class {
    constructor(writer) {
      this.writer = writer;
      this.name = "EXT_mesh_gpu_instancing";
    }
    writeNode(object, nodeDef) {
      if (!object.isInstancedMesh) return;
      const writer = this.writer;
      const mesh = object;
      const translationAttr = new Float32Array(mesh.count * 3);
      const rotationAttr = new Float32Array(mesh.count * 4);
      const scaleAttr = new Float32Array(mesh.count * 3);
      const matrix = new Matrix4();
      const position = new Vector3();
      const quaternion = new Quaternion();
      const scale = new Vector3();
      for (let i = 0; i < mesh.count; i++) {
        mesh.getMatrixAt(i, matrix);
        matrix.decompose(position, quaternion, scale);
        position.toArray(translationAttr, i * 3);
        quaternion.toArray(rotationAttr, i * 4);
        scale.toArray(scaleAttr, i * 3);
      }
      const attributes = {
        TRANSLATION: writer.processAccessor(new BufferAttribute(translationAttr, 3)),
        ROTATION: writer.processAccessor(new BufferAttribute(rotationAttr, 4)),
        SCALE: writer.processAccessor(new BufferAttribute(scaleAttr, 3))
      };
      if (mesh.instanceColor)
        attributes._COLOR_0 = writer.processAccessor(mesh.instanceColor);
      nodeDef.extensions = nodeDef.extensions || {};
      nodeDef.extensions[this.name] = { attributes };
      writer.extensionsUsed[this.name] = true;
      writer.extensionsRequired[this.name] = true;
    }
  };
  GLTFExporter.Utils = {
    insertKeyframe: function(track, time) {
      const tolerance = 1e-3;
      const valueSize = track.getValueSize();
      const times = new track.TimeBufferType(track.times.length + 1);
      const values = new track.ValueBufferType(track.values.length + valueSize);
      const interpolant = track.createInterpolant(new track.ValueBufferType(valueSize));
      let index;
      if (track.times.length === 0) {
        times[0] = time;
        for (let i = 0; i < valueSize; i++) {
          values[i] = 0;
        }
        index = 0;
      } else if (time < track.times[0]) {
        if (Math.abs(track.times[0] - time) < tolerance) return 0;
        times[0] = time;
        times.set(track.times, 1);
        values.set(interpolant.evaluate(time), 0);
        values.set(track.values, valueSize);
        index = 0;
      } else if (time > track.times[track.times.length - 1]) {
        if (Math.abs(track.times[track.times.length - 1] - time) < tolerance) {
          return track.times.length - 1;
        }
        times[times.length - 1] = time;
        times.set(track.times, 0);
        values.set(track.values, 0);
        values.set(interpolant.evaluate(time), track.values.length);
        index = times.length - 1;
      } else {
        for (let i = 0; i < track.times.length; i++) {
          if (Math.abs(track.times[i] - time) < tolerance) return i;
          if (track.times[i] < time && track.times[i + 1] > time) {
            times.set(track.times.slice(0, i + 1), 0);
            times[i + 1] = time;
            times.set(track.times.slice(i + 1), i + 2);
            values.set(track.values.slice(0, (i + 1) * valueSize), 0);
            values.set(interpolant.evaluate(time), (i + 1) * valueSize);
            values.set(track.values.slice((i + 1) * valueSize), (i + 2) * valueSize);
            index = i + 1;
            break;
          }
        }
      }
      track.times = times;
      track.values = values;
      return index;
    },
    mergeMorphTargetTracks: function(clip, root) {
      const tracks = [];
      const mergedTracks = {};
      const sourceTracks = clip.tracks;
      for (let i = 0; i < sourceTracks.length; ++i) {
        let sourceTrack = sourceTracks[i];
        const sourceTrackBinding = PropertyBinding.parseTrackName(sourceTrack.name);
        const sourceTrackNode = PropertyBinding.findNode(root, sourceTrackBinding.nodeName);
        if (sourceTrackBinding.propertyName !== "morphTargetInfluences" || sourceTrackBinding.propertyIndex === void 0) {
          tracks.push(sourceTrack);
          continue;
        }
        if (sourceTrack.createInterpolant !== sourceTrack.InterpolantFactoryMethodDiscrete && sourceTrack.createInterpolant !== sourceTrack.InterpolantFactoryMethodLinear) {
          if (sourceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline) {
            throw new Error("THREE.GLTFExporter: Cannot merge tracks with glTF CUBICSPLINE interpolation.");
          }
          console.warn("THREE.GLTFExporter: Morph target interpolation mode not yet supported. Using LINEAR instead.");
          sourceTrack = sourceTrack.clone();
          sourceTrack.setInterpolation(InterpolateLinear);
        }
        const targetCount = sourceTrackNode.morphTargetInfluences.length;
        const targetIndex = sourceTrackNode.morphTargetDictionary[sourceTrackBinding.propertyIndex];
        if (targetIndex === void 0) {
          throw new Error("THREE.GLTFExporter: Morph target name not found: " + sourceTrackBinding.propertyIndex);
        }
        let mergedTrack;
        if (mergedTracks[sourceTrackNode.uuid] === void 0) {
          mergedTrack = sourceTrack.clone();
          const values = new mergedTrack.ValueBufferType(targetCount * mergedTrack.times.length);
          for (let j = 0; j < mergedTrack.times.length; j++) {
            values[j * targetCount + targetIndex] = mergedTrack.values[j];
          }
          mergedTrack.name = (sourceTrackBinding.nodeName || "") + ".morphTargetInfluences";
          mergedTrack.values = values;
          mergedTracks[sourceTrackNode.uuid] = mergedTrack;
          tracks.push(mergedTrack);
          continue;
        }
        const sourceInterpolant = sourceTrack.createInterpolant(new sourceTrack.ValueBufferType(1));
        mergedTrack = mergedTracks[sourceTrackNode.uuid];
        for (let j = 0; j < mergedTrack.times.length; j++) {
          mergedTrack.values[j * targetCount + targetIndex] = sourceInterpolant.evaluate(mergedTrack.times[j]);
        }
        for (let j = 0; j < sourceTrack.times.length; j++) {
          const keyframeIndex = this.insertKeyframe(mergedTrack, sourceTrack.times[j]);
          mergedTrack.values[keyframeIndex * targetCount + targetIndex] = sourceTrack.values[j];
        }
      }
      clip.tracks = tracks;
      return clip;
    }
  };

  // bundle-entry.js
  window.THREE = three_module_exports;
  window.OrbitControls = OrbitControls;
  window.TransformControls = TransformControls;
  window.FBXLoader = FBXLoader;
  window.GLTFExporter = GLTFExporter;
})();
/**
 * @license
 * Copyright 2010-2023 Three.js Authors
 * SPDX-License-Identifier: MIT
 */
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