(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(["exports", "three", "../libs/fflate.module.js", "../curves/NURBSCurve.js"], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require("three"), require("../libs/fflate.module.js"), require("../curves/NURBSCurve.js"));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.three, global.fflateModule, global.NURBSCurve);
    global.FBXLoader = mod.exports;
  }
})(typeof globalThis !== "undefined" ? globalThis : typeof self !== "undefined" ? self : this, function (_exports, _three, fflate, _NURBSCurve) {
  "use strict";

  Object.defineProperty(_exports, "__esModule", {
    value: true
  });
  _exports.FBXLoader = void 0;
  fflate = _interopRequireWildcard(fflate);

  function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }

  function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

  function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }

  function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } Object.defineProperty(subClass, "prototype", { value: Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }), writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }

  function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

  function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

  function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }

  function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

  function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

  function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

  /**
   * Loader loads FBX file and generates Group representing FBX scene.
   * Requires FBX file to be >= 7.0 and in ASCII or >= 6400 in Binary format
   * Versions lower than this may load but will probably have errors
   *
   * Needs Support:
   *  Morph normals / blend shape normals
   *
   * FBX format references:
   * 	https://wiki.blender.org/index.php/User:Mont29/Foundation/FBX_File_Structure
   * 	http://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_index_html (C++ SDK reference)
   *
   * 	Binary format specification:
   *		https://code.blender.org/2013/08/fbx-binary-file-format-specification/
   */
  var fbxTree;
  var connections;
  var sceneGraph;

  var FBXLoader = /*#__PURE__*/function (_Loader) {
    _inherits(FBXLoader, _Loader);

    var _super = _createSuper(FBXLoader);

    function FBXLoader(manager) {
      _classCallCheck(this, FBXLoader);

      return _super.call(this, manager);
    }

    _createClass(FBXLoader, [{
      key: "load",
      value: function load(url, onLoad, onProgress, onError) {
        var scope = this;
        var path = scope.path === '' ? _three.LoaderUtils.extractUrlBase(url) : scope.path;
        var loader = new _three.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);
      }
    }, {
      key: "parse",
      value: function parse(FBXBuffer, path) {
        if (isFbxFormatBinary(FBXBuffer)) {
          fbxTree = new BinaryParser().parse(FBXBuffer);
        } else {
          var FBXText = convertArrayBufferToString(FBXBuffer);

          if (!isFbxFormatASCII(FBXText)) {
            throw new Error('THREE.FBXLoader: Unknown format.');
          }

          if (getFbxVersion(FBXText) < 7000) {
            throw new Error('THREE.FBXLoader: FBX version not supported, FileVersion: ' + getFbxVersion(FBXText));
          }

          fbxTree = new TextParser().parse(FBXText);
        } // console.log( fbxTree );


        var textureLoader = new _three.TextureLoader(this.manager).setPath(this.resourcePath || path).setCrossOrigin(this.crossOrigin);
        return new FBXTreeParser(textureLoader, this.manager).parse(fbxTree);
      }
    }]);

    return FBXLoader;
  }(_three.Loader); // Parse the FBXTree object returned by the BinaryParser or TextParser and return a Group


  _exports.FBXLoader = FBXLoader;

  var FBXTreeParser = /*#__PURE__*/function () {
    function FBXTreeParser(textureLoader, manager) {
      _classCallCheck(this, FBXTreeParser);

      this.textureLoader = textureLoader;
      this.manager = manager;
    }

    _createClass(FBXTreeParser, [{
      key: "parse",
      value: function parse() {
        connections = this.parseConnections();
        var images = this.parseImages();
        var textures = this.parseTextures(images);
        var materials = this.parseMaterials(textures);
        var deformers = this.parseDeformers();
        var 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

    }, {
      key: "parseConnections",
      value: function parseConnections() {
        var connectionMap = new Map();

        if ('Connections' in fbxTree) {
          var rawConnections = fbxTree.Connections.connections;
          rawConnections.forEach(function (rawConnection) {
            var fromID = rawConnection[0];
            var toID = rawConnection[1];
            var relationship = rawConnection[2];

            if (!connectionMap.has(fromID)) {
              connectionMap.set(fromID, {
                parents: [],
                children: []
              });
            }

            var parentRelationship = {
              ID: toID,
              relationship: relationship
            };
            connectionMap.get(fromID).parents.push(parentRelationship);

            if (!connectionMap.has(toID)) {
              connectionMap.set(toID, {
                parents: [],
                children: []
              });
            }

            var childRelationship = {
              ID: fromID,
              relationship: 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.

    }, {
      key: "parseImages",
      value: function parseImages() {
        var images = {};
        var blobs = {};

        if ('Video' in fbxTree.Objects) {
          var videoNodes = fbxTree.Objects.Video;

          for (var nodeID in videoNodes) {
            var videoNode = videoNodes[nodeID];
            var id = parseInt(nodeID);
            images[id] = videoNode.RelativeFilename || videoNode.Filename; // raw image data is in videoNode.Content

            if ('Content' in videoNode) {
              var arrayBufferContent = videoNode.Content instanceof ArrayBuffer && videoNode.Content.byteLength > 0;
              var base64Content = typeof videoNode.Content === 'string' && videoNode.Content !== '';

              if (arrayBufferContent || base64Content) {
                var image = this.parseImage(videoNodes[nodeID]);
                blobs[videoNode.RelativeFilename || videoNode.Filename] = image;
              }
            }
          }
        }

        for (var _id in images) {
          var filename = images[_id];
          if (blobs[filename] !== undefined) images[_id] = blobs[filename];else images[_id] = images[_id].split('\\').pop();
        }

        return images;
      } // Parse embedded image data in FBXTree.Video.Content

    }, {
      key: "parseImage",
      value: function parseImage(videoNode) {
        var content = videoNode.Content;
        var fileName = videoNode.RelativeFilename || videoNode.Filename;
        var extension = fileName.slice(fileName.lastIndexOf('.') + 1).toLowerCase();
        var 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') {
          // ASCII format
          return 'data:' + type + ';base64,' + content;
        } else {
          // Binary Format
          var array = new Uint8Array(content);
          return window.URL.createObjectURL(new Blob([array], {
            type: 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

    }, {
      key: "parseTextures",
      value: function parseTextures(images) {
        var textureMap = new Map();

        if ('Texture' in fbxTree.Objects) {
          var textureNodes = fbxTree.Objects.Texture;

          for (var nodeID in textureNodes) {
            var texture = this.parseTexture(textureNodes[nodeID], images);
            textureMap.set(parseInt(nodeID), texture);
          }
        }

        return textureMap;
      } // Parse individual node in FBXTree.Objects.Texture

    }, {
      key: "parseTexture",
      value: function parseTexture(textureNode, images) {
        var texture = this.loadTexture(textureNode, images);
        texture.ID = textureNode.id;
        texture.name = textureNode.attrName;
        var wrapModeU = textureNode.WrapModeU;
        var wrapModeV = textureNode.WrapModeV;
        var valueU = wrapModeU !== undefined ? wrapModeU.value : 0;
        var valueV = wrapModeV !== undefined ? wrapModeV.value : 0; // http://download.autodesk.com/us/fbx/SDKdocs/FBX_SDK_Help/files/fbxsdkref/class_k_fbx_texture.html#889640e63e2e681259ea81061b85143a
        // 0: repeat(default), 1: clamp

        texture.wrapS = valueU === 0 ? _three.RepeatWrapping : _three.ClampToEdgeWrapping;
        texture.wrapT = valueV === 0 ? _three.RepeatWrapping : _three.ClampToEdgeWrapping;

        if ('Scaling' in textureNode) {
          var values = textureNode.Scaling.value;
          texture.repeat.x = values[0];
          texture.repeat.y = values[1];
        }

        return texture;
      } // load a texture specified as a blob or data URI, or via an external URL using TextureLoader

    }, {
      key: "loadTexture",
      value: function loadTexture(textureNode, images) {
        var fileName;
        var currentPath = this.textureLoader.path;
        var children = connections.get(textureNode.id).children;

        if (children !== undefined && children.length > 0 && images[children[0].ID] !== undefined) {
          fileName = images[children[0].ID];

          if (fileName.indexOf('blob:') === 0 || fileName.indexOf('data:') === 0) {
            this.textureLoader.setPath(undefined);
          }
        }

        var texture;
        var extension = textureNode.FileName.slice(-3).toLowerCase();

        if (extension === 'tga') {
          var loader = this.manager.getHandler('.tga');

          if (loader === null) {
            console.warn('FBXLoader: TGA loader not found, creating placeholder texture for', textureNode.RelativeFilename);
            texture = new _three.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 _three.Texture();
        } else {
          texture = this.textureLoader.load(fileName);
        }

        this.textureLoader.setPath(currentPath);
        return texture;
      } // Parse nodes in FBXTree.Objects.Material

    }, {
      key: "parseMaterials",
      value: function parseMaterials(textureMap) {
        var materialMap = new Map();

        if ('Material' in fbxTree.Objects) {
          var materialNodes = fbxTree.Objects.Material;

          for (var nodeID in materialNodes) {
            var 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

    }, {
      key: "parseMaterial",
      value: function parseMaterial(materialNode, textureMap) {
        var ID = materialNode.id;
        var name = materialNode.attrName;
        var type = materialNode.ShadingModel; // Case where FBX wraps shading model in property object.

        if (typeof type === 'object') {
          type = type.value;
        } // Ignore unused materials which don't have any connections.


        if (!connections.has(ID)) return null;
        var parameters = this.parseParameters(materialNode, textureMap, ID);
        var material;

        switch (type.toLowerCase()) {
          case 'phong':
            material = new _three.MeshPhongMaterial();
            break;

          case 'lambert':
            material = new _three.MeshLambertMaterial();
            break;

          default:
            console.warn('THREE.FBXLoader: unknown material type "%s". Defaulting to MeshPhongMaterial.', type);
            material = new _three.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

    }, {
      key: "parseParameters",
      value: function parseParameters(materialNode, textureMap, ID) {
        var parameters = {};

        if (materialNode.BumpFactor) {
          parameters.bumpScale = materialNode.BumpFactor.value;
        }

        if (materialNode.Diffuse) {
          parameters.color = new _three.Color().fromArray(materialNode.Diffuse.value);
        } else if (materialNode.DiffuseColor && (materialNode.DiffuseColor.type === 'Color' || materialNode.DiffuseColor.type === 'ColorRGB')) {
          // The blender exporter exports diffuse here instead of in materialNode.Diffuse
          parameters.color = new _three.Color().fromArray(materialNode.DiffuseColor.value);
        }

        if (materialNode.DisplacementFactor) {
          parameters.displacementScale = materialNode.DisplacementFactor.value;
        }

        if (materialNode.Emissive) {
          parameters.emissive = new _three.Color().fromArray(materialNode.Emissive.value);
        } else if (materialNode.EmissiveColor && (materialNode.EmissiveColor.type === 'Color' || materialNode.EmissiveColor.type === 'ColorRGB')) {
          // The blender exporter exports emissive color here instead of in materialNode.Emissive
          parameters.emissive = new _three.Color().fromArray(materialNode.EmissiveColor.value);
        }

        if (materialNode.EmissiveFactor) {
          parameters.emissiveIntensity = parseFloat(materialNode.EmissiveFactor.value);
        }

        if (materialNode.Opacity) {
          parameters.opacity = parseFloat(materialNode.Opacity.value);
        }

        if (parameters.opacity < 1.0) {
          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 _three.Color().fromArray(materialNode.Specular.value);
        } else if (materialNode.SpecularColor && materialNode.SpecularColor.type === 'Color') {
          // The blender exporter exports specular color here instead of in materialNode.Specular
          parameters.specular = new _three.Color().fromArray(materialNode.SpecularColor.value);
        }

        var scope = this;
        connections.get(ID).children.forEach(function (child) {
          var 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 !== undefined) {
                parameters.map.encoding = _three.sRGBEncoding;
              }

              break;

            case 'DisplacementColor':
              parameters.displacementMap = scope.getTexture(textureMap, child.ID);
              break;

            case 'EmissiveColor':
              parameters.emissiveMap = scope.getTexture(textureMap, child.ID);

              if (parameters.emissiveMap !== undefined) {
                parameters.emissiveMap.encoding = _three.sRGBEncoding;
              }

              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 !== undefined) {
                parameters.envMap.mapping = _three.EquirectangularReflectionMapping;
                parameters.envMap.encoding = _three.sRGBEncoding;
              }

              break;

            case 'SpecularColor':
              parameters.specularMap = scope.getTexture(textureMap, child.ID);

              if (parameters.specularMap !== undefined) {
                parameters.specularMap.encoding = _three.sRGBEncoding;
              }

              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.

    }, {
      key: "getTexture",
      value: function getTexture(textureMap, id) {
        // if the texture is a layered texture, just use the first layer and issue a warning
        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.

    }, {
      key: "parseDeformers",
      value: function parseDeformers() {
        var skeletons = {};
        var morphTargets = {};

        if ('Deformer' in fbxTree.Objects) {
          var DeformerNodes = fbxTree.Objects.Deformer;

          for (var nodeID in DeformerNodes) {
            var deformerNode = DeformerNodes[nodeID];
            var relationships = connections.get(parseInt(nodeID));

            if (deformerNode.attrType === 'Skin') {
              var 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') {
              var 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: skeletons,
          morphTargets: 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

    }, {
      key: "parseSkeleton",
      value: function parseSkeleton(relationships, deformerNodes) {
        var rawBones = [];
        relationships.children.forEach(function (child) {
          var boneNode = deformerNodes[child.ID];
          if (boneNode.attrType !== 'Cluster') return;
          var rawBone = {
            ID: child.ID,
            indices: [],
            weights: [],
            transformLink: new _three.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: rawBones,
          bones: []
        };
      } // The top level morph deformer node has type "BlendShape" and sub nodes have type "BlendShapeChannel"

    }, {
      key: "parseMorphTargets",
      value: function parseMorphTargets(relationships, deformerNodes) {
        var rawMorphTargets = [];

        for (var i = 0; i < relationships.children.length; i++) {
          var child = relationships.children[i];
          var morphTargetNode = deformerNodes[child.ID];
          var 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 (child) {
            return child.relationship === undefined;
          })[0].ID;
          rawMorphTargets.push(rawMorphTarget);
        }

        return rawMorphTargets;
      } // create the main Group() to be returned by the loader

    }, {
      key: "parseScene",
      value: function parseScene(deformers, geometryMap, materialMap) {
        sceneGraph = new _three.Group();
        var modelMap = this.parseModels(deformers.skeletons, geometryMap, materialMap);
        var modelNodes = fbxTree.Objects.Model;
        var scope = this;
        modelMap.forEach(function (model) {
          var modelNode = modelNodes[model.ID];
          scope.setLookAtProperties(model, modelNode);
          var parentConnections = connections.get(model.ID).parents;
          parentConnections.forEach(function (connection) {
            var parent = modelMap.get(connection.ID);
            if (parent !== undefined) parent.add(model);
          });

          if (model.parent === null) {
            sceneGraph.add(model);
          }
        });
        this.bindSkeleton(deformers.skeletons, geometryMap, modelMap);
        this.createAmbientLight();
        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;
            }

            var transform = generateTransform(node.userData.transformData);
            node.applyMatrix4(transform);
            node.updateWorldMatrix();
          }
        });
        var animations = new AnimationParser().parse(); // if all the models where already combined in a single group, just return that

        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

    }, {
      key: "parseModels",
      value: function parseModels(skeletons, geometryMap, materialMap) {
        var modelMap = new Map();
        var modelNodes = fbxTree.Objects.Model;

        for (var nodeID in modelNodes) {
          var id = parseInt(nodeID);
          var node = modelNodes[nodeID];
          var relationships = connections.get(id);
          var 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 _three.Bone();
                break;

              case 'Null':
              default:
                model = new _three.Group();
                break;
            }

            model.name = node.attrName ? _three.PropertyBinding.sanitizeNodeName(node.attrName) : '';
            model.ID = id;
          }

          this.getTransformData(model, node);
          modelMap.set(id, model);
        }

        return modelMap;
      }
    }, {
      key: "buildSkeleton",
      value: function buildSkeleton(relationships, skeletons, id, name) {
        var bone = null;
        relationships.parents.forEach(function (parent) {
          var _loop = function _loop(ID) {
            var skeleton = skeletons[ID];
            skeleton.rawBones.forEach(function (rawBone, i) {
              if (rawBone.ID === parent.ID) {
                var subBone = bone;
                bone = new _three.Bone();
                bone.matrixWorld.copy(rawBone.transformLink); // set name and id here - otherwise in cases where "subBone" is created it will not have a name / id

                bone.name = name ? _three.PropertyBinding.sanitizeNodeName(name) : '';
                bone.ID = id;
                skeleton.bones[i] = bone; // In cases where a bone is shared between multiple meshes
                // duplicate the bone here and and it as a child of the first bone

                if (subBone !== null) {
                  bone.add(subBone);
                }
              }
            });
          };

          for (var ID in skeletons) {
            _loop(ID);
          }
        });
        return bone;
      } // create a PerspectiveCamera or OrthographicCamera

    }, {
      key: "createCamera",
      value: function createCamera(relationships) {
        var model;
        var cameraAttribute;
        relationships.children.forEach(function (child) {
          var attr = fbxTree.Objects.NodeAttribute[child.ID];

          if (attr !== undefined) {
            cameraAttribute = attr;
          }
        });

        if (cameraAttribute === undefined) {
          model = new _three.Object3D();
        } else {
          var type = 0;

          if (cameraAttribute.CameraProjectionType !== undefined && cameraAttribute.CameraProjectionType.value === 1) {
            type = 1;
          }

          var nearClippingPlane = 1;

          if (cameraAttribute.NearPlane !== undefined) {
            nearClippingPlane = cameraAttribute.NearPlane.value / 1000;
          }

          var farClippingPlane = 1000;

          if (cameraAttribute.FarPlane !== undefined) {
            farClippingPlane = cameraAttribute.FarPlane.value / 1000;
          }

          var width = window.innerWidth;
          var height = window.innerHeight;

          if (cameraAttribute.AspectWidth !== undefined && cameraAttribute.AspectHeight !== undefined) {
            width = cameraAttribute.AspectWidth.value;
            height = cameraAttribute.AspectHeight.value;
          }

          var aspect = width / height;
          var fov = 45;

          if (cameraAttribute.FieldOfView !== undefined) {
            fov = cameraAttribute.FieldOfView.value;
          }

          var focalLength = cameraAttribute.FocalLength ? cameraAttribute.FocalLength.value : null;

          switch (type) {
            case 0:
              // Perspective
              model = new _three.PerspectiveCamera(fov, aspect, nearClippingPlane, farClippingPlane);
              if (focalLength !== null) model.setFocalLength(focalLength);
              break;

            case 1:
              // Orthographic
              model = new _three.OrthographicCamera(-width / 2, width / 2, height / 2, -height / 2, nearClippingPlane, farClippingPlane);
              break;

            default:
              console.warn('THREE.FBXLoader: Unknown camera type ' + type + '.');
              model = new _three.Object3D();
              break;
          }
        }

        return model;
      } // Create a DirectionalLight, PointLight or SpotLight

    }, {
      key: "createLight",
      value: function createLight(relationships) {
        var model;
        var lightAttribute;
        relationships.children.forEach(function (child) {
          var attr = fbxTree.Objects.NodeAttribute[child.ID];

          if (attr !== undefined) {
            lightAttribute = attr;
          }
        });

        if (lightAttribute === undefined) {
          model = new _three.Object3D();
        } else {
          var type; // LightType can be undefined for Point lights

          if (lightAttribute.LightType === undefined) {
            type = 0;
          } else {
            type = lightAttribute.LightType.value;
          }

          var color = 0xffffff;

          if (lightAttribute.Color !== undefined) {
            color = new _three.Color().fromArray(lightAttribute.Color.value);
          }

          var intensity = lightAttribute.Intensity === undefined ? 1 : lightAttribute.Intensity.value / 100; // light disabled

          if (lightAttribute.CastLightOnObject !== undefined && lightAttribute.CastLightOnObject.value === 0) {
            intensity = 0;
          }

          var distance = 0;

          if (lightAttribute.FarAttenuationEnd !== undefined) {
            if (lightAttribute.EnableFarAttenuation !== undefined && lightAttribute.EnableFarAttenuation.value === 0) {
              distance = 0;
            } else {
              distance = lightAttribute.FarAttenuationEnd.value;
            }
          } // TODO: could this be calculated linearly from FarAttenuationStart to FarAttenuationEnd?


          var decay = 1;

          switch (type) {
            case 0:
              // Point
              model = new _three.PointLight(color, intensity, distance, decay);
              break;

            case 1:
              // Directional
              model = new _three.DirectionalLight(color, intensity);
              break;

            case 2:
              // Spot
              var angle = Math.PI / 3;

              if (lightAttribute.InnerAngle !== undefined) {
                angle = _three.MathUtils.degToRad(lightAttribute.InnerAngle.value);
              }

              var penumbra = 0;

              if (lightAttribute.OuterAngle !== undefined) {
                // TODO: this is not correct - FBX calculates outer and inner angle in degrees
                // with OuterAngle > InnerAngle && OuterAngle <= Math.PI
                // while three.js uses a penumbra between (0, 1) to attenuate the inner angle
                penumbra = _three.MathUtils.degToRad(lightAttribute.OuterAngle.value);
                penumbra = Math.max(penumbra, 1);
              }

              model = new _three.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 _three.PointLight(color, intensity);
              break;
          }

          if (lightAttribute.CastShadows !== undefined && lightAttribute.CastShadows.value === 1) {
            model.castShadow = true;
          }
        }

        return model;
      }
    }, {
      key: "createMesh",
      value: function createMesh(relationships, geometryMap, materialMap) {
        var model;
        var geometry = null;
        var material = null;
        var materials = []; // get geometry and materials(s) from connections

        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 _three.MeshPhongMaterial({
            color: 0xcccccc
          });
          materials.push(material);
        }

        if ('color' in geometry.attributes) {
          materials.forEach(function (material) {
            material.vertexColors = true;
          });
        }

        if (geometry.FBX_Deformer) {
          model = new _three.SkinnedMesh(geometry, material);
          model.normalizeSkinWeights();
        } else {
          model = new _three.Mesh(geometry, material);
        }

        return model;
      }
    }, {
      key: "createCurve",
      value: function createCurve(relationships, geometryMap) {
        var geometry = relationships.children.reduce(function (geo, child) {
          if (geometryMap.has(child.ID)) geo = geometryMap.get(child.ID);
          return geo;
        }, null); // FBX does not list materials for Nurbs lines, so we'll just put our own in here.

        var material = new _three.LineBasicMaterial({
          color: 0x3300ff,
          linewidth: 1
        });
        return new _three.Line(geometry, material);
      } // parse the model node for transform data

    }, {
      key: "getTransformData",
      value: function getTransformData(model, modelNode) {
        var 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;
      }
    }, {
      key: "setLookAtProperties",
      value: function setLookAtProperties(model, modelNode) {
        if ('LookAtProperty' in modelNode) {
          var children = connections.get(model.ID).children;
          children.forEach(function (child) {
            if (child.relationship === 'LookAtProperty') {
              var lookAtTarget = fbxTree.Objects.Model[child.ID];

              if ('Lcl_Translation' in lookAtTarget) {
                var pos = lookAtTarget.Lcl_Translation.value; // DirectionalLight, SpotLight

                if (model.target !== undefined) {
                  model.target.position.fromArray(pos);
                  sceneGraph.add(model.target);
                } else {
                  // Cameras and other Object3Ds
                  model.lookAt(new _three.Vector3().fromArray(pos));
                }
              }
            }
          });
        }
      }
    }, {
      key: "bindSkeleton",
      value: function bindSkeleton(skeletons, geometryMap, modelMap) {
        var bindMatrices = this.parsePoseNodes();

        var _loop2 = function _loop2(ID) {
          var skeleton = skeletons[ID];
          var parents = connections.get(parseInt(skeleton.ID)).parents;
          parents.forEach(function (parent) {
            if (geometryMap.has(parent.ID)) {
              var geoID = parent.ID;
              var geoRelationships = connections.get(geoID);
              geoRelationships.parents.forEach(function (geoConnParent) {
                if (modelMap.has(geoConnParent.ID)) {
                  var model = modelMap.get(geoConnParent.ID);
                  model.bind(new _three.Skeleton(skeleton.bones), bindMatrices[geoConnParent.ID]);
                }
              });
            }
          });
        };

        for (var ID in skeletons) {
          _loop2(ID);
        }
      }
    }, {
      key: "parsePoseNodes",
      value: function parsePoseNodes() {
        var bindMatrices = {};

        if ('Pose' in fbxTree.Objects) {
          var BindPoseNode = fbxTree.Objects.Pose;

          for (var nodeID in BindPoseNode) {
            if (BindPoseNode[nodeID].attrType === 'BindPose' && BindPoseNode[nodeID].NbPoseNodes > 0) {
              var poseNodes = BindPoseNode[nodeID].PoseNode;

              if (Array.isArray(poseNodes)) {
                poseNodes.forEach(function (poseNode) {
                  bindMatrices[poseNode.Node] = new _three.Matrix4().fromArray(poseNode.Matrix.a);
                });
              } else {
                bindMatrices[poseNodes.Node] = new _three.Matrix4().fromArray(poseNodes.Matrix.a);
              }
            }
          }
        }

        return bindMatrices;
      } // Parse ambient color in FBXTree.GlobalSettings - if it's not set to black (default), create an ambient light

    }, {
      key: "createAmbientLight",
      value: function createAmbientLight() {
        if ('GlobalSettings' in fbxTree && 'AmbientColor' in fbxTree.GlobalSettings) {
          var ambientColor = fbxTree.GlobalSettings.AmbientColor.value;
          var r = ambientColor[0];
          var g = ambientColor[1];
          var b = ambientColor[2];

          if (r !== 0 || g !== 0 || b !== 0) {
            var color = new _three.Color(r, g, b);
            sceneGraph.add(new _three.AmbientLight(color, 1));
          }
        }
      }
    }]);

    return FBXTreeParser;
  }(); // parse Geometry data from FBXTree and return map of BufferGeometries


  var GeometryParser = /*#__PURE__*/function () {
    function GeometryParser() {
      _classCallCheck(this, GeometryParser);
    }

    _createClass(GeometryParser, [{
      key: "parse",
      value: // Parse nodes in FBXTree.Objects.Geometry
      function parse(deformers) {
        var geometryMap = new Map();

        if ('Geometry' in fbxTree.Objects) {
          var geoNodes = fbxTree.Objects.Geometry;

          for (var nodeID in geoNodes) {
            var relationships = connections.get(parseInt(nodeID));
            var geo = this.parseGeometry(relationships, geoNodes[nodeID], deformers);
            geometryMap.set(parseInt(nodeID), geo);
          }
        }

        return geometryMap;
      } // Parse single node in FBXTree.Objects.Geometry

    }, {
      key: "parseGeometry",
      value: function 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

    }, {
      key: "parseMeshGeometry",
      value: function parseMeshGeometry(relationships, geoNode, deformers) {
        var skeletons = deformers.skeletons;
        var morphTargets = [];
        var modelNodes = relationships.parents.map(function (parent) {
          return fbxTree.Objects.Model[parent.ID];
        }); // don't create geometry if it is not associated with any models

        if (modelNodes.length === 0) return;
        var skeleton = relationships.children.reduce(function (skeleton, child) {
          if (skeletons[child.ID] !== undefined) skeleton = skeletons[child.ID];
          return skeleton;
        }, null);
        relationships.children.forEach(function (child) {
          if (deformers.morphTargets[child.ID] !== undefined) {
            morphTargets.push(deformers.morphTargets[child.ID]);
          }
        }); // Assume one model and get the preRotation from that
        // if there is more than one model associated with the geometry this may cause problems

        var modelNode = modelNodes[0];
        var 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;
        var transform = generateTransform(transformData);
        return this.genGeometry(geoNode, skeleton, morphTargets, transform);
      } // Generate a BufferGeometry from a node in FBXTree.Objects.Geometry

    }, {
      key: "genGeometry",
      value: function genGeometry(geoNode, skeleton, morphTargets, preTransform) {
        var geo = new _three.BufferGeometry();
        if (geoNode.attrName) geo.name = geoNode.attrName;
        var geoInfo = this.parseGeoNode(geoNode, skeleton);
        var buffers = this.genBuffers(geoInfo);
        var positionAttribute = new _three.Float32BufferAttribute(buffers.vertex, 3);
        positionAttribute.applyMatrix4(preTransform);
        geo.setAttribute('position', positionAttribute);

        if (buffers.colors.length > 0) {
          geo.setAttribute('color', new _three.Float32BufferAttribute(buffers.colors, 3));
        }

        if (skeleton) {
          geo.setAttribute('skinIndex', new _three.Uint16BufferAttribute(buffers.weightsIndices, 4));
          geo.setAttribute('skinWeight', new _three.Float32BufferAttribute(buffers.vertexWeights, 4)); // used later to bind the skeleton to the model

          geo.FBX_Deformer = skeleton;
        }

        if (buffers.normal.length > 0) {
          var normalMatrix = new _three.Matrix3().getNormalMatrix(preTransform);
          var normalAttribute = new _three.Float32BufferAttribute(buffers.normal, 3);
          normalAttribute.applyNormalMatrix(normalMatrix);
          geo.setAttribute('normal', normalAttribute);
        }

        buffers.uvs.forEach(function (uvBuffer, i) {
          // subsequent uv buffers are called 'uv1', 'uv2', ...
          var name = 'uv' + (i + 1).toString(); // the first uv buffer is just called 'uv'

          if (i === 0) {
            name = 'uv';
          }

          geo.setAttribute(name, new _three.Float32BufferAttribute(buffers.uvs[i], 2));
        });

        if (geoInfo.material && geoInfo.material.mappingType !== 'AllSame') {
          // Convert the material indices of each vertex into rendering groups on the geometry.
          var prevMaterialIndex = buffers.materialIndex[0];
          var startIndex = 0;
          buffers.materialIndex.forEach(function (currentIndex, i) {
            if (currentIndex !== prevMaterialIndex) {
              geo.addGroup(startIndex, i - startIndex, prevMaterialIndex);
              prevMaterialIndex = currentIndex;
              startIndex = i;
            }
          }); // the loop above doesn't add the last group, do that here.

          if (geo.groups.length > 0) {
            var lastGroup = geo.groups[geo.groups.length - 1];
            var lastIndex = lastGroup.start + lastGroup.count;

            if (lastIndex !== buffers.materialIndex.length) {
              geo.addGroup(lastIndex, buffers.materialIndex.length - lastIndex, prevMaterialIndex);
            }
          } // case where there are multiple materials but the whole geometry is only
          // using one of them


          if (geo.groups.length === 0) {
            geo.addGroup(0, buffers.materialIndex.length, buffers.materialIndex[0]);
          }
        }

        this.addMorphTargets(geo, geoNode, morphTargets, preTransform);
        return geo;
      }
    }, {
      key: "parseGeoNode",
      value: function parseGeoNode(geoNode, skeleton) {
        var geoInfo = {};
        geoInfo.vertexPositions = geoNode.Vertices !== undefined ? geoNode.Vertices.a : [];
        geoInfo.vertexIndices = geoNode.PolygonVertexIndex !== undefined ? 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 = [];
          var 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) {
            // loop over the bone's vertex indices and weights
            rawBone.indices.forEach(function (index, j) {
              if (geoInfo.weightTable[index] === undefined) geoInfo.weightTable[index] = [];
              geoInfo.weightTable[index].push({
                id: i,
                weight: rawBone.weights[j]
              });
            });
          });
        }

        return geoInfo;
      }
    }, {
      key: "genBuffers",
      value: function genBuffers(geoInfo) {
        var buffers = {
          vertex: [],
          normal: [],
          colors: [],
          uvs: [],
          materialIndex: [],
          vertexWeights: [],
          weightsIndices: []
        };
        var polygonIndex = 0;
        var faceLength = 0;
        var displayedWeightsWarning = false; // these will hold data for a single face

        var facePositionIndexes = [];
        var faceNormals = [];
        var faceColors = [];
        var faceUVs = [];
        var faceWeights = [];
        var faceWeightIndices = [];
        var scope = this;
        geoInfo.vertexIndices.forEach(function (vertexIndex, polygonVertexIndex) {
          var materialIndex;
          var endOfFace = false; // Face index and vertex index arrays are combined in a single array
          // A cube with quad faces looks like this:
          // PolygonVertexIndex: *24 {
          //  a: 0, 1, 3, -3, 2, 3, 5, -5, 4, 5, 7, -7, 6, 7, 1, -1, 1, 7, 5, -4, 6, 0, 2, -5
          //  }
          // Negative numbers mark the end of a face - first face here is 0, 1, 3, -3
          // to find index of last vertex bit shift the index: ^ - 1

          if (vertexIndex < 0) {
            vertexIndex = vertexIndex ^ -1; // equivalent to ( x * -1 ) - 1

            endOfFace = true;
          }

          var weightIndices = [];
          var weights = [];
          facePositionIndexes.push(vertexIndex * 3, vertexIndex * 3 + 1, vertexIndex * 3 + 2);

          if (geoInfo.color) {
            var data = getData(polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.color);
            faceColors.push(data[0], data[1], data[2]);
          }

          if (geoInfo.skeleton) {
            if (geoInfo.weightTable[vertexIndex] !== undefined) {
              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;
              }

              var wIndex = [0, 0, 0, 0];
              var Weight = [0, 0, 0, 0];
              weights.forEach(function (weight, weightIndex) {
                var currentWeight = weight;
                var currentIndex = weightIndices[weightIndex];
                Weight.forEach(function (comparedWeight, comparedWeightIndex, comparedWeightArray) {
                  if (currentWeight > comparedWeight) {
                    comparedWeightArray[comparedWeightIndex] = currentWeight;
                    currentWeight = comparedWeight;
                    var tmp = wIndex[comparedWeightIndex];
                    wIndex[comparedWeightIndex] = currentIndex;
                    currentIndex = tmp;
                  }
                });
              });
              weightIndices = wIndex;
              weights = Weight;
            } // if the weight array is shorter than 4 pad with 0s


            while (weights.length < 4) {
              weights.push(0);
              weightIndices.push(0);
            }

            for (var i = 0; i < 4; ++i) {
              faceWeights.push(weights[i]);
              faceWeightIndices.push(weightIndices[i]);
            }
          }

          if (geoInfo.normal) {
            var _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 (geoInfo.uv) {
            geoInfo.uv.forEach(function (uv, i) {
              var data = getData(polygonVertexIndex, polygonIndex, vertexIndex, uv);

              if (faceUVs[i] === undefined) {
                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; // reset arrays for the next face

            facePositionIndexes = [];
            faceNormals = [];
            faceColors = [];
            faceUVs = [];
            faceWeights = [];
            faceWeightIndices = [];
          }
        });
        return buffers;
      } // Generate data for a single face in a geometry. If the face is a quad then split it into 2 tris

    }, {
      key: "genFace",
      value: function genFace(buffers, geoInfo, facePositionIndexes, materialIndex, faceNormals, faceColors, faceUVs, faceWeights, faceWeightIndices, faceLength) {
        var _loop3 = function _loop3(i) {
          buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[0]]);
          buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[1]]);
          buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[2]]);
          buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[(i - 1) * 3]]);
          buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[(i - 1) * 3 + 1]]);
          buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[(i - 1) * 3 + 2]]);
          buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i * 3]]);
          buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i * 3 + 1]]);
          buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i * 3 + 2]]);

          if (geoInfo.skeleton) {
            buffers.vertexWeights.push(faceWeights[0]);
            buffers.vertexWeights.push(faceWeights[1]);
            buffers.vertexWeights.push(faceWeights[2]);
            buffers.vertexWeights.push(faceWeights[3]);
            buffers.vertexWeights.push(faceWeights[(i - 1) * 4]);
            buffers.vertexWeights.push(faceWeights[(i - 1) * 4 + 1]);
            buffers.vertexWeights.push(faceWeights[(i - 1) * 4 + 2]);
            buffers.vertexWeights.push(faceWeights[(i - 1) * 4 + 3]);
            buffers.vertexWeights.push(faceWeights[i * 4]);
            buffers.vertexWeights.push(faceWeights[i * 4 + 1]);
            buffers.vertexWeights.push(faceWeights[i * 4 + 2]);
            buffers.vertexWeights.push(faceWeights[i * 4 + 3]);
            buffers.weightsIndices.push(faceWeightIndices[0]);
            buffers.weightsIndices.push(faceWeightIndices[1]);
            buffers.weightsIndices.push(faceWeightIndices[2]);
            buffers.weightsIndices.push(faceWeightIndices[3]);
            buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4]);
            buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4 + 1]);
            buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4 + 2]);
            buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4 + 3]);
            buffers.weightsIndices.push(faceWeightIndices[i * 4]);
            buffers.weightsIndices.push(faceWeightIndices[i * 4 + 1]);
            buffers.weightsIndices.push(faceWeightIndices[i * 4 + 2]);
            buffers.weightsIndices.push(faceWeightIndices[i * 4 + 3]);
          }

          if (geoInfo.color) {
            buffers.colors.push(faceColors[0]);
            buffers.colors.push(faceColors[1]);
            buffers.colors.push(faceColors[2]);
            buffers.colors.push(faceColors[(i - 1) * 3]);
            buffers.colors.push(faceColors[(i - 1) * 3 + 1]);
            buffers.colors.push(faceColors[(i - 1) * 3 + 2]);
            buffers.colors.push(faceColors[i * 3]);
            buffers.colors.push(faceColors[i * 3 + 1]);
            buffers.colors.push(faceColors[i * 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[0]);
            buffers.normal.push(faceNormals[1]);
            buffers.normal.push(faceNormals[2]);
            buffers.normal.push(faceNormals[(i - 1) * 3]);
            buffers.normal.push(faceNormals[(i - 1) * 3 + 1]);
            buffers.normal.push(faceNormals[(i - 1) * 3 + 2]);
            buffers.normal.push(faceNormals[i * 3]);
            buffers.normal.push(faceNormals[i * 3 + 1]);
            buffers.normal.push(faceNormals[i * 3 + 2]);
          }

          if (geoInfo.uv) {
            geoInfo.uv.forEach(function (uv, j) {
              if (buffers.uvs[j] === undefined) buffers.uvs[j] = [];
              buffers.uvs[j].push(faceUVs[j][0]);
              buffers.uvs[j].push(faceUVs[j][1]);
              buffers.uvs[j].push(faceUVs[j][(i - 1) * 2]);
              buffers.uvs[j].push(faceUVs[j][(i - 1) * 2 + 1]);
              buffers.uvs[j].push(faceUVs[j][i * 2]);
              buffers.uvs[j].push(faceUVs[j][i * 2 + 1]);
            });
          }
        };

        for (var i = 2; i < faceLength; i++) {
          _loop3(i);
        }
      }
    }, {
      key: "addMorphTargets",
      value: function addMorphTargets(parentGeo, parentGeoNode, morphTargets, preTransform) {
        if (morphTargets.length === 0) return;
        parentGeo.morphTargetsRelative = true;
        parentGeo.morphAttributes.position = []; // parentGeo.morphAttributes.normal = []; // not implemented

        var scope = this;
        morphTargets.forEach(function (morphTarget) {
          morphTarget.rawTargets.forEach(function (rawTarget) {
            var morphGeoNode = fbxTree.Objects.Geometry[rawTarget.geoID];

            if (morphGeoNode !== undefined) {
              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

    }, {
      key: "genMorphGeometry",
      value: function genMorphGeometry(parentGeo, parentGeoNode, morphGeoNode, preTransform, name) {
        var vertexIndices = parentGeoNode.PolygonVertexIndex !== undefined ? parentGeoNode.PolygonVertexIndex.a : [];
        var morphPositionsSparse = morphGeoNode.Vertices !== undefined ? morphGeoNode.Vertices.a : [];
        var indices = morphGeoNode.Indexes !== undefined ? morphGeoNode.Indexes.a : [];
        var length = parentGeo.attributes.position.count * 3;
        var morphPositions = new Float32Array(length);

        for (var i = 0; i < indices.length; i++) {
          var morphIndex = indices[i] * 3;
          morphPositions[morphIndex] = morphPositionsSparse[i * 3];
          morphPositions[morphIndex + 1] = morphPositionsSparse[i * 3 + 1];
          morphPositions[morphIndex + 2] = morphPositionsSparse[i * 3 + 2];
        } // TODO: add morph normal support


        var morphGeoInfo = {
          vertexIndices: vertexIndices,
          vertexPositions: morphPositions
        };
        var morphBuffers = this.genBuffers(morphGeoInfo);
        var positionAttribute = new _three.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

    }, {
      key: "parseNormals",
      value: function parseNormals(NormalNode) {
        var mappingType = NormalNode.MappingInformationType;
        var referenceType = NormalNode.ReferenceInformationType;
        var buffer = NormalNode.Normals.a;
        var 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: buffer,
          indices: indexBuffer,
          mappingType: mappingType,
          referenceType: referenceType
        };
      } // Parse UVs from FBXTree.Objects.Geometry.LayerElementUV if it exists

    }, {
      key: "parseUVs",
      value: function parseUVs(UVNode) {
        var mappingType = UVNode.MappingInformationType;
        var referenceType = UVNode.ReferenceInformationType;
        var buffer = UVNode.UV.a;
        var indexBuffer = [];

        if (referenceType === 'IndexToDirect') {
          indexBuffer = UVNode.UVIndex.a;
        }

        return {
          dataSize: 2,
          buffer: buffer,
          indices: indexBuffer,
          mappingType: mappingType,
          referenceType: referenceType
        };
      } // Parse Vertex Colors from FBXTree.Objects.Geometry.LayerElementColor if it exists

    }, {
      key: "parseVertexColors",
      value: function parseVertexColors(ColorNode) {
        var mappingType = ColorNode.MappingInformationType;
        var referenceType = ColorNode.ReferenceInformationType;
        var buffer = ColorNode.Colors.a;
        var indexBuffer = [];

        if (referenceType === 'IndexToDirect') {
          indexBuffer = ColorNode.ColorIndex.a;
        }

        return {
          dataSize: 4,
          buffer: buffer,
          indices: indexBuffer,
          mappingType: mappingType,
          referenceType: referenceType
        };
      } // Parse mapping and material data in FBXTree.Objects.Geometry.LayerElementMaterial if it exists

    }, {
      key: "parseMaterialIndices",
      value: function parseMaterialIndices(MaterialNode) {
        var mappingType = MaterialNode.MappingInformationType;
        var referenceType = MaterialNode.ReferenceInformationType;

        if (mappingType === 'NoMappingInformation') {
          return {
            dataSize: 1,
            buffer: [0],
            indices: [0],
            mappingType: 'AllSame',
            referenceType: referenceType
          };
        }

        var materialIndexBuffer = MaterialNode.Materials.a; // Since materials are stored as indices, there's a bit of a mismatch between FBX and what
        // we expect.So we create an intermediate buffer that points to the index in the buffer,
        // for conforming with the other functions we've written for other data.

        var materialIndices = [];

        for (var i = 0; i < materialIndexBuffer.length; ++i) {
          materialIndices.push(i);
        }

        return {
          dataSize: 1,
          buffer: materialIndexBuffer,
          indices: materialIndices,
          mappingType: mappingType,
          referenceType: referenceType
        };
      } // Generate a NurbGeometry from a node in FBXTree.Objects.Geometry

    }, {
      key: "parseNurbsGeometry",
      value: function parseNurbsGeometry(geoNode) {
        if (_NURBSCurve.NURBSCurve === undefined) {
          console.error('THREE.FBXLoader: The loader relies on NURBSCurve for any nurbs present in the model. Nurbs will show up as empty geometry.');
          return new _three.BufferGeometry();
        }

        var 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 _three.BufferGeometry();
        }

        var degree = order - 1;
        var knots = geoNode.KnotVector.a;
        var controlPoints = [];
        var pointsValues = geoNode.Points.a;

        for (var i = 0, l = pointsValues.length; i < l; i += 4) {
          controlPoints.push(new _three.Vector4().fromArray(pointsValues, i));
        }

        var startKnot, endKnot;

        if (geoNode.Form === 'Closed') {
          controlPoints.push(controlPoints[0]);
        } else if (geoNode.Form === 'Periodic') {
          startKnot = degree;
          endKnot = knots.length - 1 - startKnot;

          for (var _i = 0; _i < degree; ++_i) {
            controlPoints.push(controlPoints[_i]);
          }
        }

        var curve = new _NURBSCurve.NURBSCurve(degree, knots, controlPoints, startKnot, endKnot);
        var points = curve.getPoints(controlPoints.length * 12);
        return new _three.BufferGeometry().setFromPoints(points);
      }
    }]);

    return GeometryParser;
  }(); // parse animation data from FBXTree


  var AnimationParser = /*#__PURE__*/function () {
    function AnimationParser() {
      _classCallCheck(this, AnimationParser);
    }

    _createClass(AnimationParser, [{
      key: "parse",
      value: // take raw animation clips and turn them into three.js animation clips
      function parse() {
        var animationClips = [];
        var rawClips = this.parseClips();

        if (rawClips !== undefined) {
          for (var key in rawClips) {
            var rawClip = rawClips[key];
            var clip = this.addClip(rawClip);
            animationClips.push(clip);
          }
        }

        return animationClips;
      }
    }, {
      key: "parseClips",
      value: function parseClips() {
        // since the actual transformation data is stored in FBXTree.Objects.AnimationCurve,
        // if this is undefined we can safely assume there are no animations
        if (fbxTree.Objects.AnimationCurve === undefined) return undefined;
        var curveNodesMap = this.parseAnimationCurveNodes();
        this.parseAnimationCurves(curveNodesMap);
        var layersMap = this.parseAnimationLayers(curveNodesMap);
        var 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

    }, {
      key: "parseAnimationCurveNodes",
      value: function parseAnimationCurveNodes() {
        var rawCurveNodes = fbxTree.Objects.AnimationCurveNode;
        var curveNodesMap = new Map();

        for (var nodeID in rawCurveNodes) {
          var rawCurveNode = rawCurveNodes[nodeID];

          if (rawCurveNode.attrName.match(/S|R|T|DeformPercent/) !== null) {
            var 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)

    }, {
      key: "parseAnimationCurves",
      value: function parseAnimationCurves(curveNodesMap) {
        var rawCurves = fbxTree.Objects.AnimationCurve; // TODO: Many values are identical up to roundoff error, but won't be optimised
        // e.g. position times: [0, 0.4, 0. 8]
        // position values: [7.23538335023477e-7, 93.67518615722656, -0.9982695579528809, 7.23538335023477e-7, 93.67518615722656, -0.9982695579528809, 7.235384487103147e-7, 93.67520904541016, -0.9982695579528809]
        // clearly, this should be optimised to
        // times: [0], positions [7.23538335023477e-7, 93.67518615722656, -0.9982695579528809]
        // this shows up in nearly every FBX file, and generally time array is length > 100

        for (var nodeID in rawCurves) {
          var animationCurve = {
            id: rawCurves[nodeID].id,
            times: rawCurves[nodeID].KeyTime.a.map(convertFBXTimeToSeconds),
            values: rawCurves[nodeID].KeyValueFloat.a
          };
          var relationships = connections.get(animationCurve.id);

          if (relationships !== undefined) {
            var animationCurveID = relationships.parents[0].ID;
            var 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(/d|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

    }, {
      key: "parseAnimationLayers",
      value: function parseAnimationLayers(curveNodesMap) {
        var rawLayers = fbxTree.Objects.AnimationLayer;
        var layersMap = new Map();

        var _loop4 = function _loop4(nodeID) {
          var layerCurveNodes = [];
          var connection = connections.get(parseInt(nodeID));

          if (connection !== undefined) {
            // all the animationCurveNodes used in the layer
            var children = connection.children;
            children.forEach(function (child, i) {
              if (curveNodesMap.has(child.ID)) {
                var curveNode = curveNodesMap.get(child.ID); // check that the curves are defined for at least one axis, otherwise ignore the curveNode

                if (curveNode.curves.x !== undefined || curveNode.curves.y !== undefined || curveNode.curves.z !== undefined) {
                  if (layerCurveNodes[i] === undefined) {
                    var modelID = connections.get(child.ID).parents.filter(function (parent) {
                      return parent.relationship !== undefined;
                    })[0].ID;

                    if (modelID !== undefined) {
                      var rawModel = fbxTree.Objects.Model[modelID.toString()];

                      if (rawModel === undefined) {
                        console.warn('THREE.FBXLoader: Encountered a unused curve.', child);
                        return;
                      }

                      var node = {
                        modelName: rawModel.attrName ? _three.PropertyBinding.sanitizeNodeName(rawModel.attrName) : '',
                        ID: rawModel.id,
                        initialPosition: [0, 0, 0],
                        initialRotation: [0, 0, 0],
                        initialScale: [1, 1, 1]
                      };
                      sceneGraph.traverse(function (child) {
                        if (child.ID === rawModel.id) {
                          node.transform = child.matrix;
                          if (child.userData.transformData) node.eulerOrder = child.userData.transformData.eulerOrder;
                        }
                      });
                      if (!node.transform) node.transform = new _three.Matrix4(); // if the animated model is pre rotated, we'll have to apply the pre rotations to every
                      // animation value as well

                      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 !== undefined) {
                  if (layerCurveNodes[i] === undefined) {
                    var deformerID = connections.get(child.ID).parents.filter(function (parent) {
                      return parent.relationship !== undefined;
                    })[0].ID;
                    var morpherID = connections.get(deformerID).parents[0].ID;
                    var geoID = connections.get(morpherID).parents[0].ID; // assuming geometry is not used in more than one model

                    var _modelID = connections.get(geoID).parents[0].ID;
                    var _rawModel = fbxTree.Objects.Model[_modelID];
                    var _node = {
                      modelName: _rawModel.attrName ? _three.PropertyBinding.sanitizeNodeName(_rawModel.attrName) : '',
                      morphName: fbxTree.Objects.Deformer[deformerID].attrName
                    };
                    layerCurveNodes[i] = _node;
                  }

                  layerCurveNodes[i][curveNode.attr] = curveNode;
                }
              }
            });
            layersMap.set(parseInt(nodeID), layerCurveNodes);
          }
        };

        for (var nodeID in rawLayers) {
          _loop4(nodeID);
        }

        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

    }, {
      key: "parseAnimStacks",
      value: function parseAnimStacks(layersMap) {
        var rawStacks = fbxTree.Objects.AnimationStack; // connect the stacks (clips) up to the layers

        var rawClips = {};

        for (var nodeID in rawStacks) {
          var children = connections.get(parseInt(nodeID)).children;

          if (children.length > 1) {
            // it seems like stacks will always be associated with a single layer. But just in case there are files
            // where there are multiple layers per stack, we'll display a warning
            console.warn('THREE.FBXLoader: Encountered an animation stack with multiple layers, this is currently not supported. Ignoring subsequent layers.');
          }

          var layer = layersMap.get(children[0].ID);
          rawClips[nodeID] = {
            name: rawStacks[nodeID].attrName,
            layer: layer
          };
        }

        return rawClips;
      }
    }, {
      key: "addClip",
      value: function addClip(rawClip) {
        var tracks = [];
        var scope = this;
        rawClip.layer.forEach(function (rawTracks) {
          tracks = tracks.concat(scope.generateTracks(rawTracks));
        });
        return new _three.AnimationClip(rawClip.name, -1, tracks);
      }
    }, {
      key: "generateTracks",
      value: function generateTracks(rawTracks) {
        var tracks = [];
        var initialPosition = new _three.Vector3();
        var initialRotation = new _three.Quaternion();
        var initialScale = new _three.Vector3();
        if (rawTracks.transform) rawTracks.transform.decompose(initialPosition, initialRotation, initialScale);
        initialPosition = initialPosition.toArray();
        initialRotation = new _three.Euler().setFromQuaternion(initialRotation, rawTracks.eulerOrder).toArray();
        initialScale = initialScale.toArray();

        if (rawTracks.T !== undefined && Object.keys(rawTracks.T.curves).length > 0) {
          var positionTrack = this.generateVectorTrack(rawTracks.modelName, rawTracks.T.curves, initialPosition, 'position');
          if (positionTrack !== undefined) tracks.push(positionTrack);
        }

        if (rawTracks.R !== undefined && Object.keys(rawTracks.R.curves).length > 0) {
          var rotationTrack = this.generateRotationTrack(rawTracks.modelName, rawTracks.R.curves, initialRotation, rawTracks.preRotation, rawTracks.postRotation, rawTracks.eulerOrder);
          if (rotationTrack !== undefined) tracks.push(rotationTrack);
        }

        if (rawTracks.S !== undefined && Object.keys(rawTracks.S.curves).length > 0) {
          var scaleTrack = this.generateVectorTrack(rawTracks.modelName, rawTracks.S.curves, initialScale, 'scale');
          if (scaleTrack !== undefined) tracks.push(scaleTrack);
        }

        if (rawTracks.DeformPercent !== undefined) {
          var morphTrack = this.generateMorphTrack(rawTracks);
          if (morphTrack !== undefined) tracks.push(morphTrack);
        }

        return tracks;
      }
    }, {
      key: "generateVectorTrack",
      value: function generateVectorTrack(modelName, curves, initialValue, type) {
        var times = this.getTimesForAllAxes(curves);
        var values = this.getKeyframeTrackValues(times, curves, initialValue);
        return new _three.VectorKeyframeTrack(modelName + '.' + type, times, values);
      }
    }, {
      key: "generateRotationTrack",
      value: function generateRotationTrack(modelName, curves, initialValue, preRotation, postRotation, eulerOrder) {
        if (curves.x !== undefined) {
          this.interpolateRotations(curves.x);
          curves.x.values = curves.x.values.map(_three.MathUtils.degToRad);
        }

        if (curves.y !== undefined) {
          this.interpolateRotations(curves.y);
          curves.y.values = curves.y.values.map(_three.MathUtils.degToRad);
        }

        if (curves.z !== undefined) {
          this.interpolateRotations(curves.z);
          curves.z.values = curves.z.values.map(_three.MathUtils.degToRad);
        }

        var times = this.getTimesForAllAxes(curves);
        var values = this.getKeyframeTrackValues(times, curves, initialValue);

        if (preRotation !== undefined) {
          preRotation = preRotation.map(_three.MathUtils.degToRad);
          preRotation.push(eulerOrder);
          preRotation = new _three.Euler().fromArray(preRotation);
          preRotation = new _three.Quaternion().setFromEuler(preRotation);
        }

        if (postRotation !== undefined) {
          postRotation = postRotation.map(_three.MathUtils.degToRad);
          postRotation.push(eulerOrder);
          postRotation = new _three.Euler().fromArray(postRotation);
          postRotation = new _three.Quaternion().setFromEuler(postRotation).invert();
        }

        var quaternion = new _three.Quaternion();
        var euler = new _three.Euler();
        var quaternionValues = [];

        for (var i = 0; i < values.length; i += 3) {
          euler.set(values[i], values[i + 1], values[i + 2], eulerOrder);
          quaternion.setFromEuler(euler);
          if (preRotation !== undefined) quaternion.premultiply(preRotation);
          if (postRotation !== undefined) quaternion.multiply(postRotation);
          quaternion.toArray(quaternionValues, i / 3 * 4);
        }

        return new _three.QuaternionKeyframeTrack(modelName + '.quaternion', times, quaternionValues);
      }
    }, {
      key: "generateMorphTrack",
      value: function generateMorphTrack(rawTracks) {
        var curves = rawTracks.DeformPercent.curves.morph;
        var values = curves.values.map(function (val) {
          return val / 100;
        });
        var morphNum = sceneGraph.getObjectByName(rawTracks.modelName).morphTargetDictionary[rawTracks.morphName];
        return new _three.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

    }, {
      key: "getTimesForAllAxes",
      value: function getTimesForAllAxes(curves) {
        var times = []; // first join together the times for each axis, if defined

        if (curves.x !== undefined) times = times.concat(curves.x.times);
        if (curves.y !== undefined) times = times.concat(curves.y.times);
        if (curves.z !== undefined) times = times.concat(curves.z.times); // then sort them

        times = times.sort(function (a, b) {
          return a - b;
        }); // and remove duplicates

        if (times.length > 1) {
          var targetIndex = 1;
          var lastValue = times[0];

          for (var i = 1; i < times.length; i++) {
            var currentValue = times[i];

            if (currentValue !== lastValue) {
              times[targetIndex] = currentValue;
              lastValue = currentValue;
              targetIndex++;
            }
          }

          times = times.slice(0, targetIndex);
        }

        return times;
      }
    }, {
      key: "getKeyframeTrackValues",
      value: function getKeyframeTrackValues(times, curves, initialValue) {
        var prevValue = initialValue;
        var values = [];
        var xIndex = -1;
        var yIndex = -1;
        var 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 there is an x value defined for this frame, use that

          if (xIndex !== -1) {
            var xValue = curves.x.values[xIndex];
            values.push(xValue);
            prevValue[0] = xValue;
          } else {
            // otherwise use the x value from the previous frame
            values.push(prevValue[0]);
          }

          if (yIndex !== -1) {
            var yValue = curves.y.values[yIndex];
            values.push(yValue);
            prevValue[1] = yValue;
          } else {
            values.push(prevValue[1]);
          }

          if (zIndex !== -1) {
            var 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

    }, {
      key: "interpolateRotations",
      value: function interpolateRotations(curve) {
        for (var i = 1; i < curve.values.length; i++) {
          var initialValue = curve.values[i - 1];
          var valuesSpan = curve.values[i] - initialValue;
          var absoluteSpan = Math.abs(valuesSpan);

          if (absoluteSpan >= 180) {
            var numSubIntervals = absoluteSpan / 180;
            var step = valuesSpan / numSubIntervals;
            var nextValue = initialValue + step;
            var initialTime = curve.times[i - 1];
            var timeSpan = curve.times[i] - initialTime;
            var interval = timeSpan / numSubIntervals;
            var nextTime = initialTime + interval;
            var interpolatedTimes = [];
            var interpolatedValues = [];

            while (nextTime < curve.times[i]) {
              interpolatedTimes.push(nextTime);
              nextTime += interval;
              interpolatedValues.push(nextValue);
              nextValue += step;
            }

            curve.times = inject(curve.times, i, interpolatedTimes);
            curve.values = inject(curve.values, i, interpolatedValues);
          }
        }
      }
    }]);

    return AnimationParser;
  }(); // parse an FBX file in ASCII format


  var TextParser = /*#__PURE__*/function () {
    function TextParser() {
      _classCallCheck(this, TextParser);
    }

    _createClass(TextParser, [{
      key: "getPrevNode",
      value: function getPrevNode() {
        return this.nodeStack[this.currentIndent - 2];
      }
    }, {
      key: "getCurrentNode",
      value: function getCurrentNode() {
        return this.nodeStack[this.currentIndent - 1];
      }
    }, {
      key: "getCurrentProp",
      value: function getCurrentProp() {
        return this.currentProp;
      }
    }, {
      key: "pushStack",
      value: function pushStack(node) {
        this.nodeStack.push(node);
        this.currentIndent += 1;
      }
    }, {
      key: "popStack",
      value: function popStack() {
        this.nodeStack.pop();
        this.currentIndent -= 1;
      }
    }, {
      key: "setCurrentProp",
      value: function setCurrentProp(val, name) {
        this.currentProp = val;
        this.currentPropName = name;
      }
    }, {
      key: "parse",
      value: function parse(text) {
        this.currentIndent = 0;
        this.allNodes = new FBXTree();
        this.nodeStack = [];
        this.currentProp = [];
        this.currentPropName = '';
        var scope = this;
        var split = text.split(/[\r\n]+/);
        split.forEach(function (line, i) {
          var matchComment = line.match(/^[\s\t]*;/);
          var matchEmpty = line.match(/^[\s\t]*$/);
          if (matchComment || matchEmpty) return;
          var matchBeginning = line.match('^\\t{' + scope.currentIndent + '}(\\w+):(.*){', '');
          var matchProperty = line.match('^\\t{' + scope.currentIndent + '}(\\w+):[\\s\\t\\r\\n](.*)');
          var 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}]/)) {
            // large arrays are split over multiple lines terminated with a ',' character
            // if this is encountered the line needs to be joined to the previous line
            scope.parseNodePropertyContinued(line);
          }
        });
        return this.allNodes;
      }
    }, {
      key: "parseNodeBegin",
      value: function parseNodeBegin(line, property) {
        var nodeName = property[1].trim().replace(/^"/, '').replace(/"$/, '');
        var nodeAttrs = property[2].split(',').map(function (attr) {
          return attr.trim().replace(/^"/, '').replace(/"$/, '');
        });
        var node = {
          name: nodeName
        };
        var attrs = this.parseNodeAttr(nodeAttrs);
        var currentNode = this.getCurrentNode(); // a top node

        if (this.currentIndent === 0) {
          this.allNodes.add(nodeName, node);
        } else {
          // a subnode
          // if the subnode already exists, append it
          if (nodeName in currentNode) {
            // special case Pose needs PoseNodes as an array
            if (nodeName === 'PoseNode') {
              currentNode.PoseNode.push(node);
            } else if (currentNode[nodeName].id !== undefined) {
              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);
      }
    }, {
      key: "parseNodeAttr",
      value: function parseNodeAttr(attrs) {
        var id = attrs[0];

        if (attrs[0] !== '') {
          id = parseInt(attrs[0]);

          if (isNaN(id)) {
            id = attrs[0];
          }
        }

        var name = '',
            type = '';

        if (attrs.length > 1) {
          name = attrs[1].replace(/^(\w+)::/, '');
          type = attrs[2];
        }

        return {
          id: id,
          name: name,
          type: type
        };
      }
    }, {
      key: "parseNodeProperty",
      value: function parseNodeProperty(line, property, contentLine) {
        var propName = property[1].replace(/^"/, '').replace(/"$/, '').trim();
        var propValue = property[2].replace(/^"/, '').replace(/"$/, '').trim(); // for special case: base64 image data follows "Content: ," line
        //	Content: ,
        //	 "/9j/4RDaRXhpZgAATU0A..."

        if (propName === 'Content' && propValue === ',') {
          propValue = contentLine.replace(/"/g, '').replace(/,$/, '').trim();
        }

        var currentNode = this.getCurrentNode();
        var parentName = currentNode.name;

        if (parentName === 'Properties70') {
          this.parseNodeSpecialProperty(line, propName, propValue);
          return;
        } // Connections


        if (propName === 'C') {
          var connProps = propValue.split(',').slice(1);
          var from = parseInt(connProps[0]);
          var to = parseInt(connProps[1]);
          var 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] === undefined) {
            currentNode[propName] = [];
          }
        } // Node


        if (propName === 'Node') currentNode.id = propValue; // connections

        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); // convert string to array, unless it ends in ',' in which case more will be added to it

        if (propName === 'a' && propValue.slice(-1) !== ',') {
          currentNode.a = parseNumberArray(propValue);
        }
      }
    }, {
      key: "parseNodePropertyContinued",
      value: function parseNodePropertyContinued(line) {
        var currentNode = this.getCurrentNode();
        currentNode.a += line; // if the line doesn't end in ',' we have reached the end of the property value
        // so convert the string to an array

        if (line.slice(-1) !== ',') {
          currentNode.a = parseNumberArray(currentNode.a);
        }
      } // parse "Property70"

    }, {
      key: "parseNodeSpecialProperty",
      value: function parseNodeSpecialProperty(line, propName, propValue) {
        // split this
        // P: "Lcl Scaling", "Lcl Scaling", "", "A",1,1,1
        // into array like below
        // ["Lcl Scaling", "Lcl Scaling", "", "A", "1,1,1" ]
        var props = propValue.split('",').map(function (prop) {
          return prop.trim().replace(/^\"/, '').replace(/\s/, '_');
        });
        var innerPropName = props[0];
        var innerPropType1 = props[1];
        var innerPropType2 = props[2];
        var innerPropFlag = props[3];
        var innerPropValue = props[4]; // cast values where needed, otherwise leave as strings

        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;
        } // CAUTION: these props must append to parent's parent


        this.getPrevNode()[innerPropName] = {
          'type': innerPropType1,
          'type2': innerPropType2,
          'flag': innerPropFlag,
          'value': innerPropValue
        };
        this.setCurrentProp(this.getPrevNode(), innerPropName);
      }
    }]);

    return TextParser;
  }(); // Parse an FBX file in Binary format


  var BinaryParser = /*#__PURE__*/function () {
    function BinaryParser() {
      _classCallCheck(this, BinaryParser);
    }

    _createClass(BinaryParser, [{
      key: "parse",
      value: function parse(buffer) {
        var reader = new BinaryReader(buffer);
        reader.skip(23); // skip magic 23 bytes

        var version = reader.getUint32();

        if (version < 6400) {
          throw new Error('THREE.FBXLoader: FBX version not supported, FileVersion: ' + version);
        }

        var allNodes = new FBXTree();

        while (!this.endOfContent(reader)) {
          var node = this.parseNode(reader, version);
          if (node !== null) allNodes.add(node.name, node);
        }

        return allNodes;
      } // Check if reader has reached the end of content.

    }, {
      key: "endOfContent",
      value: function endOfContent(reader) {
        // footer size: 160bytes + 16-byte alignment padding
        // - 16bytes: magic
        // - padding til 16-byte alignment (at least 1byte?)
        //	(seems like some exporters embed fixed 15 or 16bytes?)
        // - 4bytes: magic
        // - 4bytes: version
        // - 120bytes: zero
        // - 16bytes: magic
        if (reader.size() % 16 === 0) {
          return (reader.getOffset() + 160 + 16 & ~0xf) >= reader.size();
        } else {
          return reader.getOffset() + 160 + 16 >= reader.size();
        }
      } // recursively parse nodes until the end of the file is reached

    }, {
      key: "parseNode",
      value: function parseNode(reader, version) {
        var node = {}; // The first three data sizes depends on version.

        var endOffset = version >= 7500 ? reader.getUint64() : reader.getUint32();
        var numProperties = version >= 7500 ? reader.getUint64() : reader.getUint32();
        version >= 7500 ? reader.getUint64() : reader.getUint32(); // the returned propertyListLen is not used

        var nameLen = reader.getUint8();
        var name = reader.getString(nameLen); // Regards this node as NULL-record if endOffset is zero

        if (endOffset === 0) return null;
        var propertyList = [];

        for (var i = 0; i < numProperties; i++) {
          propertyList.push(this.parseProperty(reader));
        } // Regards the first three elements in propertyList as id, attrName, and attrType


        var id = propertyList.length > 0 ? propertyList[0] : '';
        var attrName = propertyList.length > 1 ? propertyList[1] : '';
        var attrType = propertyList.length > 2 ? propertyList[2] : ''; // check if this node represents just a single property
        // like (name, 0) set or (name2, [0, 1, 2]) set of {name: 0, name2: [0, 1, 2]}

        node.singleProperty = numProperties === 1 && reader.getOffset() === endOffset ? true : false;

        while (endOffset > reader.getOffset()) {
          var subNode = this.parseNode(reader, version);
          if (subNode !== null) this.parseSubNode(name, node, subNode);
        }

        node.propertyList = propertyList; // raw property list used by parent

        if (typeof id === 'number') node.id = id;
        if (attrName !== '') node.attrName = attrName;
        if (attrType !== '') node.attrType = attrType;
        if (name !== '') node.name = name;
        return node;
      }
    }, {
      key: "parseSubNode",
      value: function parseSubNode(name, node, subNode) {
        // special case: child node is single property
        if (subNode.singleProperty === true) {
          var 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') {
          var array = [];
          subNode.propertyList.forEach(function (property, i) {
            // first Connection is FBX type (OO, OP, etc.). We'll discard these
            if (i !== 0) array.push(property);
          });

          if (node.connections === undefined) {
            node.connections = [];
          }

          node.connections.push(array);
        } else if (subNode.name === 'Properties70') {
          var keys = Object.keys(subNode);
          keys.forEach(function (key) {
            node[key] = subNode[key];
          });
        } else if (name === 'Properties70' && subNode.name === 'P') {
          var innerPropName = subNode.propertyList[0];
          var innerPropType1 = subNode.propertyList[1];
          var innerPropType2 = subNode.propertyList[2];
          var innerPropFlag = subNode.propertyList[3];
          var 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];
          } // this will be copied to parent, see above


          node[innerPropName] = {
            'type': innerPropType1,
            'type2': innerPropType2,
            'flag': innerPropFlag,
            'value': innerPropValue
          };
        } else if (node[subNode.name] === undefined) {
          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] === undefined) {
            node[subNode.name][subNode.id] = subNode;
          }
        }
      }
    }, {
      key: "parseProperty",
      value: function parseProperty(reader) {
        var type = reader.getString(1);
        var 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':
            var arrayLength = reader.getUint32();
            var encoding = reader.getUint32(); // 0: non-compressed, 1: compressed

            var 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);
              }
            }

            if (typeof fflate === 'undefined') {
              console.error('THREE.FBXLoader: External library fflate.min.js required.');
            }

            var data = fflate.unzlibSync(new Uint8Array(reader.getArrayBuffer(compressedLength))); // eslint-disable-line no-undef

            var 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);
            }

          default:
            throw new Error('THREE.FBXLoader: Unknown property type ' + type);
        }
      }
    }]);

    return BinaryParser;
  }();

  var BinaryReader = /*#__PURE__*/function () {
    function BinaryReader(buffer, littleEndian) {
      _classCallCheck(this, BinaryReader);

      this.dv = new DataView(buffer);
      this.offset = 0;
      this.littleEndian = littleEndian !== undefined ? littleEndian : true;
    }

    _createClass(BinaryReader, [{
      key: "getOffset",
      value: function getOffset() {
        return this.offset;
      }
    }, {
      key: "size",
      value: function size() {
        return this.dv.buffer.byteLength;
      }
    }, {
      key: "skip",
      value: function 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.

    }, {
      key: "getBoolean",
      value: function getBoolean() {
        return (this.getUint8() & 1) === 1;
      }
    }, {
      key: "getBooleanArray",
      value: function getBooleanArray(size) {
        var a = [];

        for (var i = 0; i < size; i++) {
          a.push(this.getBoolean());
        }

        return a;
      }
    }, {
      key: "getUint8",
      value: function getUint8() {
        var value = this.dv.getUint8(this.offset);
        this.offset += 1;
        return value;
      }
    }, {
      key: "getInt16",
      value: function getInt16() {
        var value = this.dv.getInt16(this.offset, this.littleEndian);
        this.offset += 2;
        return value;
      }
    }, {
      key: "getInt32",
      value: function getInt32() {
        var value = this.dv.getInt32(this.offset, this.littleEndian);
        this.offset += 4;
        return value;
      }
    }, {
      key: "getInt32Array",
      value: function getInt32Array(size) {
        var a = [];

        for (var i = 0; i < size; i++) {
          a.push(this.getInt32());
        }

        return a;
      }
    }, {
      key: "getUint32",
      value: function getUint32() {
        var 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

    }, {
      key: "getInt64",
      value: function getInt64() {
        var low, high;

        if (this.littleEndian) {
          low = this.getUint32();
          high = this.getUint32();
        } else {
          high = this.getUint32();
          low = this.getUint32();
        } // calculate negative value


        if (high & 0x80000000) {
          high = ~high & 0xFFFFFFFF;
          low = ~low & 0xFFFFFFFF;
          if (low === 0xFFFFFFFF) high = high + 1 & 0xFFFFFFFF;
          low = low + 1 & 0xFFFFFFFF;
          return -(high * 0x100000000 + low);
        }

        return high * 0x100000000 + low;
      }
    }, {
      key: "getInt64Array",
      value: function getInt64Array(size) {
        var a = [];

        for (var i = 0; i < size; i++) {
          a.push(this.getInt64());
        }

        return a;
      } // Note: see getInt64() comment

    }, {
      key: "getUint64",
      value: function getUint64() {
        var low, high;

        if (this.littleEndian) {
          low = this.getUint32();
          high = this.getUint32();
        } else {
          high = this.getUint32();
          low = this.getUint32();
        }

        return high * 0x100000000 + low;
      }
    }, {
      key: "getFloat32",
      value: function getFloat32() {
        var value = this.dv.getFloat32(this.offset, this.littleEndian);
        this.offset += 4;
        return value;
      }
    }, {
      key: "getFloat32Array",
      value: function getFloat32Array(size) {
        var a = [];

        for (var i = 0; i < size; i++) {
          a.push(this.getFloat32());
        }

        return a;
      }
    }, {
      key: "getFloat64",
      value: function getFloat64() {
        var value = this.dv.getFloat64(this.offset, this.littleEndian);
        this.offset += 8;
        return value;
      }
    }, {
      key: "getFloat64Array",
      value: function getFloat64Array(size) {
        var a = [];

        for (var i = 0; i < size; i++) {
          a.push(this.getFloat64());
        }

        return a;
      }
    }, {
      key: "getArrayBuffer",
      value: function getArrayBuffer(size) {
        var value = this.dv.buffer.slice(this.offset, this.offset + size);
        this.offset += size;
        return value;
      }
    }, {
      key: "getString",
      value: function getString(size) {
        // note: safari 9 doesn't support Uint8Array.indexOf; create intermediate array instead
        var a = [];

        for (var i = 0; i < size; i++) {
          a[i] = this.getUint8();
        }

        var nullByte = a.indexOf(0);
        if (nullByte >= 0) a = a.slice(0, nullByte);
        return _three.LoaderUtils.decodeText(new Uint8Array(a));
      }
    }]);

    return BinaryReader;
  }(); // FBXTree holds a representation of the FBX data, returned by the TextParser ( FBX ASCII format)
  // and BinaryParser( FBX Binary format)


  var FBXTree = /*#__PURE__*/function () {
    function FBXTree() {
      _classCallCheck(this, FBXTree);
    }

    _createClass(FBXTree, [{
      key: "add",
      value: function add(key, val) {
        this[key] = val;
      }
    }]);

    return FBXTree;
  }(); // ************** UTILITY FUNCTIONS **************


  function isFbxFormatBinary(buffer) {
    var CORRECT = "Kaydara FBX Binary  \0";
    return buffer.byteLength >= CORRECT.length && CORRECT === convertArrayBufferToString(buffer, 0, CORRECT.length);
  }

  function isFbxFormatASCII(text) {
    var CORRECT = ['K', 'a', 'y', 'd', 'a', 'r', 'a', '\\', 'F', 'B', 'X', '\\', 'B', 'i', 'n', 'a', 'r', 'y', '\\', '\\'];
    var cursor = 0;

    function read(offset) {
      var result = text[offset - 1];
      text = text.slice(cursor + offset);
      cursor++;
      return result;
    }

    for (var i = 0; i < CORRECT.length; ++i) {
      var num = read(1);

      if (num === CORRECT[i]) {
        return false;
      }
    }

    return true;
  }

  function getFbxVersion(text) {
    var versionRegExp = /FBXVersion: (\d+)/;
    var match = text.match(versionRegExp);

    if (match) {
      var version = parseInt(match[1]);
      return version;
    }

    throw new Error('THREE.FBXLoader: Cannot find the version number for the file given.');
  } // Converts FBX ticks into real time seconds.


  function convertFBXTimeToSeconds(time) {
    return time / 46186158000;
  }

  var dataArray = []; // extracts the data from the correct position in the FBX array based on indexing type

  function getData(polygonVertexIndex, polygonIndex, vertexIndex, infoObject) {
    var 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];
    var from = index * infoObject.dataSize;
    var to = from + infoObject.dataSize;
    return slice(dataArray, infoObject.buffer, from, to);
  }

  var tempEuler = new _three.Euler();
  var tempVec = new _three.Vector3(); // generate transformation from FBX transform data
  // ref: https://help.autodesk.com/view/FBX/2017/ENU/?guid=__files_GUID_10CDD63C_79C1_4F2D_BB28_AD2BE65A02ED_htm
  // ref: http://docs.autodesk.com/FBX/2014/ENU/FBX-SDK-Documentation/index.html?url=cpp_ref/_transformations_2main_8cxx-example.html,topicNumber=cpp_ref__transformations_2main_8cxx_example_htmlfc10a1e1-b18d-4e72-9dc0-70d0f1959f5e

  function generateTransform(transformData) {
    var lTranslationM = new _three.Matrix4();
    var lPreRotationM = new _three.Matrix4();
    var lRotationM = new _three.Matrix4();
    var lPostRotationM = new _three.Matrix4();
    var lScalingM = new _three.Matrix4();
    var lScalingPivotM = new _three.Matrix4();
    var lScalingOffsetM = new _three.Matrix4();
    var lRotationOffsetM = new _three.Matrix4();
    var lRotationPivotM = new _three.Matrix4();
    var lParentGX = new _three.Matrix4();
    var lParentLX = new _three.Matrix4();
    var lGlobalT = new _three.Matrix4();
    var inheritType = transformData.inheritType ? transformData.inheritType : 0;
    if (transformData.translation) lTranslationM.setPosition(tempVec.fromArray(transformData.translation));

    if (transformData.preRotation) {
      var array = transformData.preRotation.map(_three.MathUtils.degToRad);
      array.push(transformData.eulerOrder);
      lPreRotationM.makeRotationFromEuler(tempEuler.fromArray(array));
    }

    if (transformData.rotation) {
      var _array = transformData.rotation.map(_three.MathUtils.degToRad);

      _array.push(transformData.eulerOrder);

      lRotationM.makeRotationFromEuler(tempEuler.fromArray(_array));
    }

    if (transformData.postRotation) {
      var _array2 = transformData.postRotation.map(_three.MathUtils.degToRad);

      _array2.push(transformData.eulerOrder);

      lPostRotationM.makeRotationFromEuler(tempEuler.fromArray(_array2));
      lPostRotationM.invert();
    }

    if (transformData.scale) lScalingM.scale(tempVec.fromArray(transformData.scale)); // Pivots and offsets

    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)); // parent transform

    if (transformData.parentMatrixWorld) {
      lParentLX.copy(transformData.parentMatrix);
      lParentGX.copy(transformData.parentMatrixWorld);
    }

    var lLRM = lPreRotationM.clone().multiply(lRotationM).multiply(lPostRotationM); // Global Rotation

    var lParentGRM = new _three.Matrix4();
    lParentGRM.extractRotation(lParentGX); // Global Shear*Scaling

    var lParentTM = new _three.Matrix4();
    lParentTM.copyPosition(lParentGX);
    var lParentGRSM = lParentTM.clone().invert().multiply(lParentGX);
    var lParentGSM = lParentGRM.clone().invert().multiply(lParentGRSM);
    var lLSM = lScalingM;
    var lGlobalRS = new _three.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 {
      var lParentLSM = new _three.Matrix4().scale(new _three.Vector3().setFromMatrixScale(lParentLX));
      var lParentLSM_inv = lParentLSM.clone().invert();
      var lParentGSM_noLocal = lParentGSM.clone().multiply(lParentLSM_inv);
      lGlobalRS.copy(lParentGRM).multiply(lLRM).multiply(lParentGSM_noLocal).multiply(lLSM);
    }

    var lRotationPivotM_inv = lRotationPivotM.clone().invert();
    var lScalingPivotM_inv = lScalingPivotM.clone().invert(); // Calculate the local transform matrix

    var 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);
    var lLocalTWithAllPivotAndOffsetInfo = new _three.Matrix4().copyPosition(lTransform);
    var lGlobalTranslation = lParentGX.clone().multiply(lLocalTWithAllPivotAndOffsetInfo);
    lGlobalT.copyPosition(lGlobalTranslation);
    lTransform = lGlobalT.clone().multiply(lGlobalRS); // from global to local

    lTransform.premultiply(lParentGX.invert());
    return lTransform;
  } // Returns the three.js intrinsic Euler order corresponding to FBX extrinsic Euler order
  // ref: http://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_class_fbx_euler_html


  function getEulerOrder(order) {
    order = order || 0;
    var 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];
  } // Parses comma separated list of numbers and returns them an array.
  // Used internally by the TextParser


  function parseNumberArray(value) {
    var array = value.split(',').map(function (val) {
      return parseFloat(val);
    });
    return array;
  }

  function convertArrayBufferToString(buffer, from, to) {
    if (from === undefined) from = 0;
    if (to === undefined) to = buffer.byteLength;
    return _three.LoaderUtils.decodeText(new Uint8Array(buffer, from, to));
  }

  function append(a, b) {
    for (var i = 0, j = a.length, l = b.length; i < l; i++, j++) {
      a[j] = b[i];
    }
  }

  function slice(a, b, from, to) {
    for (var i = from, j = 0; i < to; i++, j++) {
      a[j] = b[i];
    }

    return a;
  } // inject array a2 into array a1 at index


  function inject(a1, index, a2) {
    return a1.slice(0, index).concat(a2).concat(a1.slice(index));
  }
});