Babylon.js/dist/preview release/loaders/babylonjs.loaders.js

(function universalModuleDefinition(root, factory) {
    var amdDependencies = [];
    var BABYLON = root.BABYLON || this.BABYLON;
    if(typeof exports === 'object' && typeof module === 'object') {
         BABYLON = BABYLON || require("babylonjs"); 

        module.exports = factory(BABYLON);
    } else if(typeof define === 'function' && define.amd) {
         amdDependencies.push("babylonjs");

        define("babylonjs-loaders", amdDependencies, factory);
    } else if(typeof exports === 'object') {
         BABYLON = BABYLON || require("babylonjs"); 

        exports["babylonjs-loaders"] = factory(BABYLON);
    } else {
        root["BABYLON"] = factory(BABYLON);
    }
})(this, function(BABYLON) {
  BABYLON = BABYLON || this.BABYLON;

var __decorate=this&&this.__decorate||function(e,t,r,c){var o,f=arguments.length,n=f<3?t:null===c?c=Object.getOwnPropertyDescriptor(t,r):c;if("object"==typeof Reflect&&"function"==typeof Reflect.decorate)n=Reflect.decorate(e,t,r,c);else for(var l=e.length-1;l>=0;l--)(o=e[l])&&(n=(f<3?o(n):f>3?o(t,r,n):o(t,r))||n);return f>3&&n&&Object.defineProperty(t,r,n),n};
var __extends=this&&this.__extends||function(){var t=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,o){t.__proto__=o}||function(t,o){for(var n in o)o.hasOwnProperty(n)&&(t[n]=o[n])};return function(o,n){function r(){this.constructor=o}t(o,n),o.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}();

var BABYLON;
(function (BABYLON) {
    var STLFileLoader = /** @class */ (function () {
        function STLFileLoader() {
            this.solidPattern = /solid (\S*)([\S\s]*)endsolid[ ]*(\S*)/g;
            this.facetsPattern = /facet([\s\S]*?)endfacet/g;
            this.normalPattern = /normal[\s]+([\-+]?[0-9]+\.?[0-9]*([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+/g;
            this.vertexPattern = /vertex[\s]+([\-+]?[0-9]+\.?[0-9]*([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+/g;
            this.name = "stl";
            // force data to come in as an ArrayBuffer
            // we'll convert to string if it looks like it's an ASCII .stl
            this.extensions = {
                ".stl": { isBinary: true },
            };
        }
        STLFileLoader.prototype.importMesh = function (meshesNames, scene, data, rootUrl, meshes, particleSystems, skeletons) {
            var matches;
            if (this.isBinary(data)) {
                // binary .stl
                var babylonMesh = new BABYLON.Mesh("stlmesh", scene);
                this.parseBinary(babylonMesh, data);
                if (meshes) {
                    meshes.push(babylonMesh);
                }
                return true;
            }
            // ASCII .stl
            // convert to string
            var array_buffer = new Uint8Array(data);
            var str = '';
            for (var i = 0; i < data.byteLength; i++) {
                str += String.fromCharCode(array_buffer[i]); // implicitly assumes little-endian
            }
            data = str;
            while (matches = this.solidPattern.exec(data)) {
                var meshName = matches[1];
                var meshNameFromEnd = matches[3];
                if (meshName != meshNameFromEnd) {
                    BABYLON.Tools.Error("Error in STL, solid name != endsolid name");
                    return false;
                }
                // check meshesNames
                if (meshesNames && meshName) {
                    if (meshesNames instanceof Array) {
                        if (!meshesNames.indexOf(meshName)) {
                            continue;
                        }
                    }
                    else {
                        if (meshName !== meshesNames) {
                            continue;
                        }
                    }
                }
                // stl mesh name can be empty as well
                meshName = meshName || "stlmesh";
                var babylonMesh = new BABYLON.Mesh(meshName, scene);
                this.parseASCII(babylonMesh, matches[2]);
                if (meshes) {
                    meshes.push(babylonMesh);
                }
            }
            return true;
        };
        STLFileLoader.prototype.load = function (scene, data, rootUrl) {
            var result = this.importMesh(null, scene, data, rootUrl, null, null, null);
            if (result) {
                scene.createDefaultCameraOrLight();
            }
            return result;
        };
        STLFileLoader.prototype.loadAssetContainer = function (scene, data, rootUrl, onError) {
            var container = new BABYLON.AssetContainer(scene);
            this.importMesh(null, scene, data, rootUrl, container.meshes, null, null);
            container.removeAllFromScene();
            return container;
        };
        STLFileLoader.prototype.isBinary = function (data) {
            // check if file size is correct for binary stl
            var faceSize, nFaces, reader;
            reader = new DataView(data);
            faceSize = (32 / 8 * 3) + ((32 / 8 * 3) * 3) + (16 / 8);
            nFaces = reader.getUint32(80, true);
            if (80 + (32 / 8) + (nFaces * faceSize) === reader.byteLength) {
                return true;
            }
            // check characters higher than ASCII to confirm binary
            var fileLength = reader.byteLength;
            for (var index = 0; index < fileLength; index++) {
                if (reader.getUint8(index) > 127) {
                    return true;
                }
            }
            return false;
        };
        STLFileLoader.prototype.parseBinary = function (mesh, data) {
            var reader = new DataView(data);
            var faces = reader.getUint32(80, true);
            var dataOffset = 84;
            var faceLength = 12 * 4 + 2;
            var offset = 0;
            var positions = new Float32Array(faces * 3 * 3);
            var normals = new Float32Array(faces * 3 * 3);
            var indices = new Uint32Array(faces * 3);
            var indicesCount = 0;
            for (var face = 0; face < faces; face++) {
                var start = dataOffset + face * faceLength;
                var normalX = reader.getFloat32(start, true);
                var normalY = reader.getFloat32(start + 4, true);
                var normalZ = reader.getFloat32(start + 8, true);
                for (var i = 1; i <= 3; i++) {
                    var vertexstart = start + i * 12;
                    // ordering is intentional to match ascii import
                    positions[offset] = reader.getFloat32(vertexstart, true);
                    positions[offset + 2] = reader.getFloat32(vertexstart + 4, true);
                    positions[offset + 1] = reader.getFloat32(vertexstart + 8, true);
                    normals[offset] = normalX;
                    normals[offset + 2] = normalY;
                    normals[offset + 1] = normalZ;
                    offset += 3;
                }
                indices[indicesCount] = indicesCount++;
                indices[indicesCount] = indicesCount++;
                indices[indicesCount] = indicesCount++;
            }
            mesh.setVerticesData(BABYLON.VertexBuffer.PositionKind, positions);
            mesh.setVerticesData(BABYLON.VertexBuffer.NormalKind, normals);
            mesh.setIndices(indices);
            mesh.computeWorldMatrix(true);
        };
        STLFileLoader.prototype.parseASCII = function (mesh, solidData) {
            var positions = [];
            var normals = [];
            var indices = [];
            var indicesCount = 0;
            //load facets, ignoring loop as the standard doesn't define it can contain more than vertices
            var matches;
            while (matches = this.facetsPattern.exec(solidData)) {
                var facet = matches[1];
                //one normal per face
                var normalMatches = this.normalPattern.exec(facet);
                this.normalPattern.lastIndex = 0;
                if (!normalMatches) {
                    continue;
                }
                var normal = [Number(normalMatches[1]), Number(normalMatches[5]), Number(normalMatches[3])];
                var vertexMatch;
                while (vertexMatch = this.vertexPattern.exec(facet)) {
                    positions.push(Number(vertexMatch[1]), Number(vertexMatch[5]), Number(vertexMatch[3]));
                    normals.push(normal[0], normal[1], normal[2]);
                }
                indices.push(indicesCount++, indicesCount++, indicesCount++);
                this.vertexPattern.lastIndex = 0;
            }
            this.facetsPattern.lastIndex = 0;
            mesh.setVerticesData(BABYLON.VertexBuffer.PositionKind, positions);
            mesh.setVerticesData(BABYLON.VertexBuffer.NormalKind, normals);
            mesh.setIndices(indices);
            mesh.computeWorldMatrix(true);
        };
        return STLFileLoader;
    }());
    BABYLON.STLFileLoader = STLFileLoader;
    if (BABYLON.SceneLoader) {
        BABYLON.SceneLoader.RegisterPlugin(new STLFileLoader());
    }
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.stlFileLoader.js.map


var BABYLON;
(function (BABYLON) {
    /**
     * Class reading and parsing the MTL file bundled with the obj file.
     */
    var MTLFileLoader = /** @class */ (function () {
        function MTLFileLoader() {
            // All material loaded from the mtl will be set here
            this.materials = [];
        }
        /**
         * This function will read the mtl file and create each material described inside
         * This function could be improve by adding :
         * -some component missing (Ni, Tf...)
         * -including the specific options available
         *
         * @param scene
         * @param data
         * @param rootUrl
         */
        MTLFileLoader.prototype.parseMTL = function (scene, data, rootUrl) {
            if (data instanceof ArrayBuffer) {
                return;
            }
            //Split the lines from the file
            var lines = data.split('\n');
            //Space char
            var delimiter_pattern = /\s+/;
            //Array with RGB colors
            var color;
            //New material
            var material = null;
            //Look at each line
            for (var i = 0; i < lines.length; i++) {
                var line = lines[i].trim();
                // Blank line or comment
                if (line.length === 0 || line.charAt(0) === '#') {
                    continue;
                }
                //Get the first parameter (keyword)
                var pos = line.indexOf(' ');
                var key = (pos >= 0) ? line.substring(0, pos) : line;
                key = key.toLowerCase();
                //Get the data following the key
                var value = (pos >= 0) ? line.substring(pos + 1).trim() : "";
                //This mtl keyword will create the new material
                if (key === "newmtl") {
                    //Check if it is the first material.
                    // Materials specifications are described after this keyword.
                    if (material) {
                        //Add the previous material in the material array.
                        this.materials.push(material);
                    }
                    //Create a new material.
                    // value is the name of the material read in the mtl file
                    material = new BABYLON.StandardMaterial(value, scene);
                }
                else if (key === "kd" && material) {
                    // Diffuse color (color under white light) using RGB values
                    //value  = "r g b"
                    color = value.split(delimiter_pattern, 3).map(parseFloat);
                    //color = [r,g,b]
                    //Set tghe color into the material
                    material.diffuseColor = BABYLON.Color3.FromArray(color);
                }
                else if (key === "ka" && material) {
                    // Ambient color (color under shadow) using RGB values
                    //value = "r g b"
                    color = value.split(delimiter_pattern, 3).map(parseFloat);
                    //color = [r,g,b]
                    //Set tghe color into the material
                    material.ambientColor = BABYLON.Color3.FromArray(color);
                }
                else if (key === "ks" && material) {
                    // Specular color (color when light is reflected from shiny surface) using RGB values
                    //value = "r g b"
                    color = value.split(delimiter_pattern, 3).map(parseFloat);
                    //color = [r,g,b]
                    //Set the color into the material
                    material.specularColor = BABYLON.Color3.FromArray(color);
                }
                else if (key === "ke" && material) {
                    // Emissive color using RGB values
                    color = value.split(delimiter_pattern, 3).map(parseFloat);
                    material.emissiveColor = BABYLON.Color3.FromArray(color);
                }
                else if (key === "ns" && material) {
                    //value = "Integer"
                    material.specularPower = parseFloat(value);
                }
                else if (key === "d" && material) {
                    //d is dissolve for current material. It mean alpha for BABYLON
                    material.alpha = parseFloat(value);
                    //Texture
                    //This part can be improved by adding the possible options of texture
                }
                else if (key === "map_ka" && material) {
                    // ambient texture map with a loaded image
                    //We must first get the folder of the image
                    material.ambientTexture = MTLFileLoader._getTexture(rootUrl, value, scene);
                }
                else if (key === "map_kd" && material) {
                    // Diffuse texture map with a loaded image
                    material.diffuseTexture = MTLFileLoader._getTexture(rootUrl, value, scene);
                }
                else if (key === "map_ks" && material) {
                    // Specular texture map with a loaded image
                    //We must first get the folder of the image
                    material.specularTexture = MTLFileLoader._getTexture(rootUrl, value, scene);
                }
                else if (key === "map_ns") {
                    //Specular
                    //Specular highlight component
                    //We must first get the folder of the image
                    //
                    //Not supported by BABYLON
                    //
                    //    continue;
                }
                else if (key === "map_bump" && material) {
                    //The bump texture
                    material.bumpTexture = MTLFileLoader._getTexture(rootUrl, value, scene);
                }
                else if (key === "map_d" && material) {
                    // The dissolve of the material
                    material.opacityTexture = MTLFileLoader._getTexture(rootUrl, value, scene);
                    //Options for illumination
                }
                else if (key === "illum") {
                    //Illumination
                    if (value === "0") {
                        //That mean Kd == Kd
                    }
                    else if (value === "1") {
                        //Color on and Ambient on
                    }
                    else if (value === "2") {
                        //Highlight on
                    }
                    else if (value === "3") {
                        //Reflection on and Ray trace on
                    }
                    else if (value === "4") {
                        //Transparency: Glass on, Reflection: Ray trace on
                    }
                    else if (value === "5") {
                        //Reflection: Fresnel on and Ray trace on
                    }
                    else if (value === "6") {
                        //Transparency: Refraction on, Reflection: Fresnel off and Ray trace on
                    }
                    else if (value === "7") {
                        //Transparency: Refraction on, Reflection: Fresnel on and Ray trace on
                    }
                    else if (value === "8") {
                        //Reflection on and Ray trace off
                    }
                    else if (value === "9") {
                        //Transparency: Glass on, Reflection: Ray trace off
                    }
                    else if (value === "10") {
                        //Casts shadows onto invisible surfaces
                    }
                }
                else {
                    // console.log("Unhandled expression at line : " + i +'\n' + "with value : " + line);
                }
            }
            //At the end of the file, add the last material
            if (material) {
                this.materials.push(material);
            }
        };
        /**
         * Gets the texture for the material.
         *
         * If the material is imported from input file,
         * We sanitize the url to ensure it takes the textre from aside the material.
         *
         * @param rootUrl The root url to load from
         * @param value The value stored in the mtl
         * @return The Texture
         */
        MTLFileLoader._getTexture = function (rootUrl, value, scene) {
            if (!value) {
                return null;
            }
            var url = rootUrl;
            // Load from input file.
            if (rootUrl === "file:") {
                var lastDelimiter = value.lastIndexOf("\\");
                if (lastDelimiter === -1) {
                    lastDelimiter = value.lastIndexOf("/");
                }
                if (lastDelimiter > -1) {
                    url += value.substr(lastDelimiter + 1);
                }
                else {
                    url += value;
                }
            }
            // Not from input file.
            else {
                url += value;
            }
            return new BABYLON.Texture(url, scene);
        };
        return MTLFileLoader;
    }());
    BABYLON.MTLFileLoader = MTLFileLoader;
    var OBJFileLoader = /** @class */ (function () {
        function OBJFileLoader() {
            this.name = "obj";
            this.extensions = ".obj";
            this.obj = /^o/;
            this.group = /^g/;
            this.mtllib = /^mtllib /;
            this.usemtl = /^usemtl /;
            this.smooth = /^s /;
            this.vertexPattern = /v( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/;
            // vn float float float
            this.normalPattern = /vn( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/;
            // vt float float
            this.uvPattern = /vt( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/;
            // f vertex vertex vertex ...
            this.facePattern1 = /f\s+(([\d]{1,}[\s]?){3,})+/;
            // f vertex/uvs vertex/uvs vertex/uvs ...
            this.facePattern2 = /f\s+((([\d]{1,}\/[\d]{1,}[\s]?){3,})+)/;
            // f vertex/uvs/normal vertex/uvs/normal vertex/uvs/normal ...
            this.facePattern3 = /f\s+((([\d]{1,}\/[\d]{1,}\/[\d]{1,}[\s]?){3,})+)/;
            // f vertex//normal vertex//normal vertex//normal ...
            this.facePattern4 = /f\s+((([\d]{1,}\/\/[\d]{1,}[\s]?){3,})+)/;
        }
        /**
         * Calls synchronously the MTL file attached to this obj.
         * Load function or importMesh function don't enable to load 2 files in the same time asynchronously.
         * Without this function materials are not displayed in the first frame (but displayed after).
         * In consequence it is impossible to get material information in your HTML file
         *
         * @param url The URL of the MTL file
         * @param rootUrl
         * @param onSuccess Callback function to be called when the MTL file is loaded
         * @private
         */
        OBJFileLoader.prototype._loadMTL = function (url, rootUrl, onSuccess) {
            //The complete path to the mtl file
            var pathOfFile = BABYLON.Tools.BaseUrl + rootUrl + url;
            // Loads through the babylon tools to allow fileInput search.
            BABYLON.Tools.LoadFile(pathOfFile, onSuccess, undefined, undefined, false, function () { console.warn("Error - Unable to load " + pathOfFile); });
        };
        OBJFileLoader.prototype.importMesh = function (meshesNames, scene, data, rootUrl, meshes, particleSystems, skeletons) {
            //get the meshes from OBJ file
            var loadedMeshes = this._parseSolid(meshesNames, scene, data, rootUrl);
            //Push meshes from OBJ file into the variable mesh of this function
            if (meshes) {
                loadedMeshes.forEach(function (mesh) {
                    meshes.push(mesh);
                });
            }
            return true;
        };
        OBJFileLoader.prototype.load = function (scene, data, rootUrl) {
            //Get the 3D model
            return this.importMesh(null, scene, data, rootUrl, null, null, null);
        };
        OBJFileLoader.prototype.loadAssetContainer = function (scene, data, rootUrl, onError) {
            var container = new BABYLON.AssetContainer(scene);
            this.importMesh(null, scene, data, rootUrl, container.meshes, null, null);
            container.removeAllFromScene();
            return container;
        };
        /**
         * Read the OBJ file and create an Array of meshes.
         * Each mesh contains all information given by the OBJ and the MTL file.
         * i.e. vertices positions and indices, optional normals values, optional UV values, optional material
         *
         * @param meshesNames
         * @param scene BABYLON.Scene The scene where are displayed the data
         * @param data String The content of the obj file
         * @param rootUrl String The path to the folder
         * @returns Array<AbstractMesh>
         * @private
         */
        OBJFileLoader.prototype._parseSolid = function (meshesNames, scene, data, rootUrl) {
            var positions = []; //values for the positions of vertices
            var normals = []; //Values for the normals
            var uvs = []; //Values for the textures
            var meshesFromObj = []; //[mesh] Contains all the obj meshes
            var handledMesh; //The current mesh of meshes array
            var indicesForBabylon = []; //The list of indices for VertexData
            var wrappedPositionForBabylon = []; //The list of position in vectors
            var wrappedUvsForBabylon = []; //Array with all value of uvs to match with the indices
            var wrappedNormalsForBabylon = []; //Array with all value of normals to match with the indices
            var tuplePosNorm = []; //Create a tuple with indice of Position, Normal, UV  [pos, norm, uvs]
            var curPositionInIndices = 0;
            var hasMeshes = false; //Meshes are defined in the file
            var unwrappedPositionsForBabylon = []; //Value of positionForBabylon w/o Vector3() [x,y,z]
            var unwrappedNormalsForBabylon = []; //Value of normalsForBabylon w/o Vector3()  [x,y,z]
            var unwrappedUVForBabylon = []; //Value of uvsForBabylon w/o Vector3()      [x,y,z]
            var triangles = []; //Indices from new triangles coming from polygons
            var materialNameFromObj = ""; //The name of the current material
            var fileToLoad = ""; //The name of the mtlFile to load
            var materialsFromMTLFile = new MTLFileLoader();
            var objMeshName = ""; //The name of the current obj mesh
            var increment = 1; //Id for meshes created by the multimaterial
            var isFirstMaterial = true;
            /**
             * Search for obj in the given array.
             * This function is called to check if a couple of data already exists in an array.
             *
             * If found, returns the index of the founded tuple index. Returns -1 if not found
             * @param arr Array<{ normals: Array<number>, idx: Array<number> }>
             * @param obj Array<number>
             * @returns {boolean}
             */
            var isInArray = function (arr, obj) {
                if (!arr[obj[0]])
                    arr[obj[0]] = { normals: [], idx: [] };
                var idx = arr[obj[0]].normals.indexOf(obj[1]);
                return idx === -1 ? -1 : arr[obj[0]].idx[idx];
            };
            var isInArrayUV = function (arr, obj) {
                if (!arr[obj[0]])
                    arr[obj[0]] = { normals: [], idx: [], uv: [] };
                var idx = arr[obj[0]].normals.indexOf(obj[1]);
                if (idx != 1 && (obj[2] == arr[obj[0]].uv[idx])) {
                    return arr[obj[0]].idx[idx];
                }
                return -1;
            };
            /**
             * This function set the data for each triangle.
             * Data are position, normals and uvs
             * If a tuple of (position, normal) is not set, add the data into the corresponding array
             * If the tuple already exist, add only their indice
             *
             * @param indicePositionFromObj Integer The index in positions array
             * @param indiceUvsFromObj Integer The index in uvs array
             * @param indiceNormalFromObj Integer The index in normals array
             * @param positionVectorFromOBJ Vector3 The value of position at index objIndice
             * @param textureVectorFromOBJ Vector3 The value of uvs
             * @param normalsVectorFromOBJ Vector3 The value of normals at index objNormale
             */
            var setData = function (indicePositionFromObj, indiceUvsFromObj, indiceNormalFromObj, positionVectorFromOBJ, textureVectorFromOBJ, normalsVectorFromOBJ) {
                //Check if this tuple already exists in the list of tuples
                var _index;
                if (OBJFileLoader.OPTIMIZE_WITH_UV) {
                    _index = isInArrayUV(tuplePosNorm, [
                        indicePositionFromObj,
                        indiceNormalFromObj,
                        indiceUvsFromObj
                    ]);
                }
                else {
                    _index = isInArray(tuplePosNorm, [
                        indicePositionFromObj,
                        indiceNormalFromObj
                    ]);
                }
                //If it not exists
                if (_index == -1) {
                    //Add an new indice.
                    //The array of indices is only an array with his length equal to the number of triangles - 1.
                    //We add vertices data in this order
                    indicesForBabylon.push(wrappedPositionForBabylon.length);
                    //Push the position of vertice for Babylon
                    //Each element is a BABYLON.Vector3(x,y,z)
                    wrappedPositionForBabylon.push(positionVectorFromOBJ);
                    //Push the uvs for Babylon
                    //Each element is a BABYLON.Vector3(u,v)
                    wrappedUvsForBabylon.push(textureVectorFromOBJ);
                    //Push the normals for Babylon
                    //Each element is a BABYLON.Vector3(x,y,z)
                    wrappedNormalsForBabylon.push(normalsVectorFromOBJ);
                    //Add the tuple in the comparison list
                    tuplePosNorm[indicePositionFromObj].normals.push(indiceNormalFromObj);
                    tuplePosNorm[indicePositionFromObj].idx.push(curPositionInIndices++);
                    if (OBJFileLoader.OPTIMIZE_WITH_UV)
                        tuplePosNorm[indicePositionFromObj].uv.push(indiceUvsFromObj);
                }
                else {
                    //The tuple already exists
                    //Add the index of the already existing tuple
                    //At this index we can get the value of position, normal and uvs of vertex
                    indicesForBabylon.push(_index);
                }
            };
            /**
             * Transform BABYLON.Vector() object onto 3 digits in an array
             */
            var unwrapData = function () {
                //Every array has the same length
                for (var l = 0; l < wrappedPositionForBabylon.length; l++) {
                    //Push the x, y, z values of each element in the unwrapped array
                    unwrappedPositionsForBabylon.push(wrappedPositionForBabylon[l].x, wrappedPositionForBabylon[l].y, wrappedPositionForBabylon[l].z);
                    unwrappedNormalsForBabylon.push(wrappedNormalsForBabylon[l].x, wrappedNormalsForBabylon[l].y, wrappedNormalsForBabylon[l].z);
                    unwrappedUVForBabylon.push(wrappedUvsForBabylon[l].x, wrappedUvsForBabylon[l].y); //z is an optional value not supported by BABYLON
                }
                // Reset arrays for the next new meshes
                wrappedPositionForBabylon = [];
                wrappedNormalsForBabylon = [];
                wrappedUvsForBabylon = [];
                tuplePosNorm = [];
                curPositionInIndices = 0;
            };
            /**
             * Create triangles from polygons by recursion
             * The best to understand how it works is to draw it in the same time you get the recursion.
             * It is important to notice that a triangle is a polygon
             * We get 4 patterns of face defined in OBJ File :
             * facePattern1 = ["1","2","3","4","5","6"]
             * facePattern2 = ["1/1","2/2","3/3","4/4","5/5","6/6"]
             * facePattern3 = ["1/1/1","2/2/2","3/3/3","4/4/4","5/5/5","6/6/6"]
             * facePattern4 = ["1//1","2//2","3//3","4//4","5//5","6//6"]
             * Each pattern is divided by the same method
             * @param face Array[String] The indices of elements
             * @param v Integer The variable to increment
             */
            var getTriangles = function (face, v) {
                //Work for each element of the array
                if (v + 1 < face.length) {
                    //Add on the triangle variable the indexes to obtain triangles
                    triangles.push(face[0], face[v], face[v + 1]);
                    //Incrementation for recursion
                    v += 1;
                    //Recursion
                    getTriangles(face, v);
                }
                //Result obtained after 2 iterations:
                //Pattern1 => triangle = ["1","2","3","1","3","4"];
                //Pattern2 => triangle = ["1/1","2/2","3/3","1/1","3/3","4/4"];
                //Pattern3 => triangle = ["1/1/1","2/2/2","3/3/3","1/1/1","3/3/3","4/4/4"];
                //Pattern4 => triangle = ["1//1","2//2","3//3","1//1","3//3","4//4"];
            };
            /**
             * Create triangles and push the data for each polygon for the pattern 1
             * In this pattern we get vertice positions
             * @param face
             * @param v
             */
            var setDataForCurrentFaceWithPattern1 = function (face, v) {
                //Get the indices of triangles for each polygon
                getTriangles(face, v);
                //For each element in the triangles array.
                //This var could contains 1 to an infinity of triangles
                for (var k = 0; k < triangles.length; k++) {
                    // Set position indice
                    var indicePositionFromObj = parseInt(triangles[k]) - 1;
                    setData(indicePositionFromObj, 0, 0, //In the pattern 1, normals and uvs are not defined
                    positions[indicePositionFromObj], //Get the vectors data
                    BABYLON.Vector2.Zero(), BABYLON.Vector3.Up() //Create default vectors
                    );
                }
                //Reset variable for the next line
                triangles = [];
            };
            /**
             * Create triangles and push the data for each polygon for the pattern 2
             * In this pattern we get vertice positions and uvsu
             * @param face
             * @param v
             */
            var setDataForCurrentFaceWithPattern2 = function (face, v) {
                //Get the indices of triangles for each polygon
                getTriangles(face, v);
                for (var k = 0; k < triangles.length; k++) {
                    //triangle[k] = "1/1"
                    //Split the data for getting position and uv
                    var point = triangles[k].split("/"); // ["1", "1"]
                    //Set position indice
                    var indicePositionFromObj = parseInt(point[0]) - 1;
                    //Set uv indice
                    var indiceUvsFromObj = parseInt(point[1]) - 1;
                    setData(indicePositionFromObj, indiceUvsFromObj, 0, //Default value for normals
                    positions[indicePositionFromObj], //Get the values for each element
                    uvs[indiceUvsFromObj], BABYLON.Vector3.Up() //Default value for normals
                    );
                }
                //Reset variable for the next line
                triangles = [];
            };
            /**
             * Create triangles and push the data for each polygon for the pattern 3
             * In this pattern we get vertice positions, uvs and normals
             * @param face
             * @param v
             */
            var setDataForCurrentFaceWithPattern3 = function (face, v) {
                //Get the indices of triangles for each polygon
                getTriangles(face, v);
                for (var k = 0; k < triangles.length; k++) {
                    //triangle[k] = "1/1/1"
                    //Split the data for getting position, uv, and normals
                    var point = triangles[k].split("/"); // ["1", "1", "1"]
                    // Set position indice
                    var indicePositionFromObj = parseInt(point[0]) - 1;
                    // Set uv indice
                    var indiceUvsFromObj = parseInt(point[1]) - 1;
                    // Set normal indice
                    var indiceNormalFromObj = parseInt(point[2]) - 1;
                    setData(indicePositionFromObj, indiceUvsFromObj, indiceNormalFromObj, positions[indicePositionFromObj], uvs[indiceUvsFromObj], normals[indiceNormalFromObj] //Set the vector for each component
                    );
                }
                //Reset variable for the next line
                triangles = [];
            };
            /**
             * Create triangles and push the data for each polygon for the pattern 4
             * In this pattern we get vertice positions and normals
             * @param face
             * @param v
             */
            var setDataForCurrentFaceWithPattern4 = function (face, v) {
                getTriangles(face, v);
                for (var k = 0; k < triangles.length; k++) {
                    //triangle[k] = "1//1"
                    //Split the data for getting position and normals
                    var point = triangles[k].split("//"); // ["1", "1"]
                    // We check indices, and normals
                    var indicePositionFromObj = parseInt(point[0]) - 1;
                    var indiceNormalFromObj = parseInt(point[1]) - 1;
                    setData(indicePositionFromObj, 1, //Default value for uv
                    indiceNormalFromObj, positions[indicePositionFromObj], //Get each vector of data
                    BABYLON.Vector2.Zero(), normals[indiceNormalFromObj]);
                }
                //Reset variable for the next line
                triangles = [];
            };
            var addPreviousObjMesh = function () {
                //Check if it is not the first mesh. Otherwise we don't have data.
                if (meshesFromObj.length > 0) {
                    //Get the previous mesh for applying the data about the faces
                    //=> in obj file, faces definition append after the name of the mesh
                    handledMesh = meshesFromObj[meshesFromObj.length - 1];
                    //Set the data into Array for the mesh
                    unwrapData();
                    // Reverse tab. Otherwise face are displayed in the wrong sens
                    indicesForBabylon.reverse();
                    //Set the information for the mesh
                    //Slice the array to avoid rewriting because of the fact this is the same var which be rewrited
                    handledMesh.indices = indicesForBabylon.slice();
                    handledMesh.positions = unwrappedPositionsForBabylon.slice();
                    handledMesh.normals = unwrappedNormalsForBabylon.slice();
                    handledMesh.uvs = unwrappedUVForBabylon.slice();
                    //Reset the array for the next mesh
                    indicesForBabylon = [];
                    unwrappedPositionsForBabylon = [];
                    unwrappedNormalsForBabylon = [];
                    unwrappedUVForBabylon = [];
                }
            };
            //Main function
            //Split the file into lines
            var lines = data.split('\n');
            //Look at each line
            for (var i = 0; i < lines.length; i++) {
                var line = lines[i].trim();
                var result;
                //Comment or newLine
                if (line.length === 0 || line.charAt(0) === '#') {
                    continue;
                    //Get information about one position possible for the vertices
                }
                else if ((result = this.vertexPattern.exec(line)) !== null) {
                    //Create a Vector3 with the position x, y, z
                    //Value of result:
                    // ["v 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
                    //Add the Vector in the list of positions
                    positions.push(new BABYLON.Vector3(parseFloat(result[1]), parseFloat(result[2]), parseFloat(result[3])));
                }
                else if ((result = this.normalPattern.exec(line)) !== null) {
                    //Create a Vector3 with the normals x, y, z
                    //Value of result
                    // ["vn 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
                    //Add the Vector in the list of normals
                    normals.push(new BABYLON.Vector3(parseFloat(result[1]), parseFloat(result[2]), parseFloat(result[3])));
                }
                else if ((result = this.uvPattern.exec(line)) !== null) {
                    //Create a Vector2 with the normals u, v
                    //Value of result
                    // ["vt 0.1 0.2 0.3", "0.1", "0.2"]
                    //Add the Vector in the list of uvs
                    uvs.push(new BABYLON.Vector2(parseFloat(result[1]), parseFloat(result[2])));
                    //Identify patterns of faces
                    //Face could be defined in different type of pattern
                }
                else if ((result = this.facePattern3.exec(line)) !== null) {
                    //Value of result:
                    //["f 1/1/1 2/2/2 3/3/3", "1/1/1 2/2/2 3/3/3"...]
                    //Set the data for this face
                    setDataForCurrentFaceWithPattern3(result[1].trim().split(" "), // ["1/1/1", "2/2/2", "3/3/3"]
                    1);
                }
                else if ((result = this.facePattern4.exec(line)) !== null) {
                    //Value of result:
                    //["f 1//1 2//2 3//3", "1//1 2//2 3//3"...]
                    //Set the data for this face
                    setDataForCurrentFaceWithPattern4(result[1].trim().split(" "), // ["1//1", "2//2", "3//3"]
                    1);
                }
                else if ((result = this.facePattern2.exec(line)) !== null) {
                    //Value of result:
                    //["f 1/1 2/2 3/3", "1/1 2/2 3/3"...]
                    //Set the data for this face
                    setDataForCurrentFaceWithPattern2(result[1].trim().split(" "), // ["1/1", "2/2", "3/3"]
                    1);
                }
                else if ((result = this.facePattern1.exec(line)) !== null) {
                    //Value of result
                    //["f 1 2 3", "1 2 3"...]
                    //Set the data for this face
                    setDataForCurrentFaceWithPattern1(result[1].trim().split(" "), // ["1", "2", "3"]
                    1);
                    //Define a mesh or an object
                    //Each time this keyword is analysed, create a new Object with all data for creating a babylonMesh
                }
                else if (this.group.test(line) || this.obj.test(line)) {
                    //Create a new mesh corresponding to the name of the group.
                    //Definition of the mesh
                    var objMesh = 
                    //Set the name of the current obj mesh
                    {
                        name: line.substring(2).trim(),
                        indices: undefined,
                        positions: undefined,
                        normals: undefined,
                        uvs: undefined,
                        materialName: ""
                    };
                    addPreviousObjMesh();
                    //Push the last mesh created with only the name
                    meshesFromObj.push(objMesh);
                    //Set this variable to indicate that now meshesFromObj has objects defined inside
                    hasMeshes = true;
                    isFirstMaterial = true;
                    increment = 1;
                    //Keyword for applying a material
                }
                else if (this.usemtl.test(line)) {
                    //Get the name of the material
                    materialNameFromObj = line.substring(7).trim();
                    //If this new material is in the same mesh
                    if (!isFirstMaterial) {
                        //Set the data for the previous mesh
                        addPreviousObjMesh();
                        //Create a new mesh
                        var objMesh = 
                        //Set the name of the current obj mesh
                        {
                            name: objMeshName + "_mm" + increment.toString(),
                            indices: undefined,
                            positions: undefined,
                            normals: undefined,
                            uvs: undefined,
                            materialName: materialNameFromObj
                        };
                        increment++;
                        //If meshes are already defined
                        meshesFromObj.push(objMesh);
                    }
                    //Set the material name if the previous line define a mesh
                    if (hasMeshes && isFirstMaterial) {
                        //Set the material name to the previous mesh (1 material per mesh)
                        meshesFromObj[meshesFromObj.length - 1].materialName = materialNameFromObj;
                        isFirstMaterial = false;
                    }
                    //Keyword for loading the mtl file
                }
                else if (this.mtllib.test(line)) {
                    //Get the name of mtl file
                    fileToLoad = line.substring(7).trim();
                    //Apply smoothing
                }
                else if (this.smooth.test(line)) {
                    // smooth shading => apply smoothing
                    //Toda  y I don't know it work with babylon and with obj.
                    //With the obj file  an integer is set
                }
                else {
                    //If there is another possibility
                    console.log("Unhandled expression at line : " + line);
                }
            }
            //At the end of the file, add the last mesh into the meshesFromObj array
            if (hasMeshes) {
                //Set the data for the last mesh
                handledMesh = meshesFromObj[meshesFromObj.length - 1];
                //Reverse indices for displaying faces in the good sens
                indicesForBabylon.reverse();
                //Get the good array
                unwrapData();
                //Set array
                handledMesh.indices = indicesForBabylon;
                handledMesh.positions = unwrappedPositionsForBabylon;
                handledMesh.normals = unwrappedNormalsForBabylon;
                handledMesh.uvs = unwrappedUVForBabylon;
            }
            //If any o or g keyword found, create a mesj with a random id
            if (!hasMeshes) {
                // reverse tab of indices
                indicesForBabylon.reverse();
                //Get positions normals uvs
                unwrapData();
                //Set data for one mesh
                meshesFromObj.push({
                    name: BABYLON.Geometry.RandomId(),
                    indices: indicesForBabylon,
                    positions: unwrappedPositionsForBabylon,
                    normals: unwrappedNormalsForBabylon,
                    uvs: unwrappedUVForBabylon,
                    materialName: materialNameFromObj
                });
            }
            //Create a BABYLON.Mesh list
            var babylonMeshesArray = []; //The mesh for babylon
            var materialToUse = new Array();
            //Set data for each mesh
            for (var j = 0; j < meshesFromObj.length; j++) {
                //check meshesNames (stlFileLoader)
                if (meshesNames && meshesFromObj[j].name) {
                    if (meshesNames instanceof Array) {
                        if (meshesNames.indexOf(meshesFromObj[j].name) == -1) {
                            continue;
                        }
                    }
                    else {
                        if (meshesFromObj[j].name !== meshesNames) {
                            continue;
                        }
                    }
                }
                //Get the current mesh
                //Set the data with VertexBuffer for each mesh
                handledMesh = meshesFromObj[j];
                //Create a BABYLON.Mesh with the name of the obj mesh
                var babylonMesh = new BABYLON.Mesh(meshesFromObj[j].name, scene);
                //Push the name of the material to an array
                //This is indispensable for the importMesh function
                materialToUse.push(meshesFromObj[j].materialName);
                var vertexData = new BABYLON.VertexData(); //The container for the values
                //Set the data for the babylonMesh
                vertexData.positions = handledMesh.positions;
                vertexData.normals = handledMesh.normals;
                vertexData.uvs = handledMesh.uvs;
                vertexData.indices = handledMesh.indices;
                //Set the data from the VertexBuffer to the current BABYLON.Mesh
                vertexData.applyToMesh(babylonMesh);
                if (OBJFileLoader.INVERT_Y) {
                    babylonMesh.scaling.y *= -1;
                }
                //Push the mesh into an array
                babylonMeshesArray.push(babylonMesh);
            }
            //load the materials
            //Check if we have a file to load
            if (fileToLoad !== "") {
                //Load the file synchronously
                this._loadMTL(fileToLoad, rootUrl, function (dataLoaded) {
                    //Create materials thanks MTLLoader function
                    materialsFromMTLFile.parseMTL(scene, dataLoaded, rootUrl);
                    //Look at each material loaded in the mtl file
                    for (var n = 0; n < materialsFromMTLFile.materials.length; n++) {
                        //Three variables to get all meshes with the same material
                        var startIndex = 0;
                        var _indices = [];
                        var _index;
                        //The material from MTL file is used in the meshes loaded
                        //Push the indice in an array
                        //Check if the material is not used for another mesh
                        while ((_index = materialToUse.indexOf(materialsFromMTLFile.materials[n].name, startIndex)) > -1) {
                            _indices.push(_index);
                            startIndex = _index + 1;
                        }
                        //If the material is not used dispose it
                        if (_index == -1 && _indices.length == 0) {
                            //If the material is not needed, remove it
                            materialsFromMTLFile.materials[n].dispose();
                        }
                        else {
                            for (var o = 0; o < _indices.length; o++) {
                                //Apply the material to the BABYLON.Mesh for each mesh with the material
                                babylonMeshesArray[_indices[o]].material = materialsFromMTLFile.materials[n];
                            }
                        }
                    }
                });
            }
            //Return an array with all BABYLON.Mesh
            return babylonMeshesArray;
        };
        OBJFileLoader.OPTIMIZE_WITH_UV = false;
        OBJFileLoader.INVERT_Y = false;
        return OBJFileLoader;
    }());
    BABYLON.OBJFileLoader = OBJFileLoader;
    if (BABYLON.SceneLoader) {
        //Add this loader into the register plugin
        BABYLON.SceneLoader.RegisterPlugin(new OBJFileLoader());
    }
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.objFileLoader.js.map


var BABYLON;
(function (BABYLON) {
    /**
    * Coordinate system mode that will be used when loading from the gltf file
    */
    var GLTFLoaderCoordinateSystemMode;
    (function (GLTFLoaderCoordinateSystemMode) {
        /**
         * Automatically convert the glTF right-handed data to the appropriate system based on the current coordinate system mode of the scene.
         */
        GLTFLoaderCoordinateSystemMode[GLTFLoaderCoordinateSystemMode["AUTO"] = 0] = "AUTO";
        /**
         * Sets the useRightHandedSystem flag on the scene.
         */
        GLTFLoaderCoordinateSystemMode[GLTFLoaderCoordinateSystemMode["FORCE_RIGHT_HANDED"] = 1] = "FORCE_RIGHT_HANDED";
    })(GLTFLoaderCoordinateSystemMode = BABYLON.GLTFLoaderCoordinateSystemMode || (BABYLON.GLTFLoaderCoordinateSystemMode = {}));
    /**
    * Animation mode that determines which animations should be started when a file is loaded
    */
    var GLTFLoaderAnimationStartMode;
    (function (GLTFLoaderAnimationStartMode) {
        /**
         * No animation will start.
         */
        GLTFLoaderAnimationStartMode[GLTFLoaderAnimationStartMode["NONE"] = 0] = "NONE";
        /**
         * The first animation will start.
         */
        GLTFLoaderAnimationStartMode[GLTFLoaderAnimationStartMode["FIRST"] = 1] = "FIRST";
        /**
         * All animations will start.
         */
        GLTFLoaderAnimationStartMode[GLTFLoaderAnimationStartMode["ALL"] = 2] = "ALL";
    })(GLTFLoaderAnimationStartMode = BABYLON.GLTFLoaderAnimationStartMode || (BABYLON.GLTFLoaderAnimationStartMode = {}));
    /**
    * Loading state
    */
    var GLTFLoaderState;
    (function (GLTFLoaderState) {
        /**
         * The asset is loading.
         */
        GLTFLoaderState[GLTFLoaderState["LOADING"] = 0] = "LOADING";
        /**
         * The asset is ready for rendering.
         */
        GLTFLoaderState[GLTFLoaderState["READY"] = 1] = "READY";
        /**
         * The asset is completely loaded.
         */
        GLTFLoaderState[GLTFLoaderState["COMPLETE"] = 2] = "COMPLETE";
    })(GLTFLoaderState = BABYLON.GLTFLoaderState || (BABYLON.GLTFLoaderState = {}));
    /** File loader to load gltf files into a babylon scene */
    var GLTFFileLoader = /** @class */ (function () {
        function GLTFFileLoader() {
            // #region Common options
            /**
             * Raised when the asset has been parsed.
             * The data.json property stores the glTF JSON.
             * The data.bin property stores the BIN chunk from a glTF binary or null if the input is not a glTF binary.
             */
            this.onParsedObservable = new BABYLON.Observable();
            // #endregion
            // #region V2 options
            /**
             * The coordinate system mode (AUTO, FORCE_RIGHT_HANDED). Defaults to AUTO.
             * - AUTO - Automatically convert the glTF right-handed data to the appropriate system based on the current coordinate system mode of the scene.
             * - FORCE_RIGHT_HANDED - Sets the useRightHandedSystem flag on the scene.
             */
            this.coordinateSystemMode = GLTFLoaderCoordinateSystemMode.AUTO;
            /**
            * The animation start mode (NONE, FIRST, ALL). Defaults to FIRST.
            * - NONE - No animation will start.
            * - FIRST - The first animation will start.
            * - ALL - All animations will start.
            */
            this.animationStartMode = GLTFLoaderAnimationStartMode.FIRST;
            /**
             * Set to true to compile materials before raising the success callback. Defaults to false.
             */
            this.compileMaterials = false;
            /**
             * Set to true to also compile materials with clip planes. Defaults to false.
             */
            this.useClipPlane = false;
            /**
             * Set to true to compile shadow generators before raising the success callback. Defaults to false.
             */
            this.compileShadowGenerators = false;
            /**
             * Raised when the loader creates a mesh after parsing the glTF properties of the mesh.
             */
            this.onMeshLoadedObservable = new BABYLON.Observable();
            /**
             * Raised when the loader creates a texture after parsing the glTF properties of the texture.
             */
            this.onTextureLoadedObservable = new BABYLON.Observable();
            /**
             * Raised when the loader creates a material after parsing the glTF properties of the material.
             */
            this.onMaterialLoadedObservable = new BABYLON.Observable();
            /**
             * Raised when the asset is completely loaded, immediately before the loader is disposed.
             * For assets with LODs, raised when all of the LODs are complete.
             * For assets without LODs, raised when the model is complete, immediately after the loader resolves the returned promise.
             */
            this.onCompleteObservable = new BABYLON.Observable();
            /**
            * Raised after the loader is disposed.
            */
            this.onDisposeObservable = new BABYLON.Observable();
            /**
             * Raised after a loader extension is created.
             * Set additional options for a loader extension in this event.
             */
            this.onExtensionLoadedObservable = new BABYLON.Observable();
            // #endregion
            this._loader = null;
            /**
             * Name of the loader ("gltf")
             */
            this.name = "gltf";
            /**
             * Supported file extensions of the loader (.gltf, .glb)
             */
            this.extensions = {
                ".gltf": { isBinary: false },
                ".glb": { isBinary: true }
            };
        }
        Object.defineProperty(GLTFFileLoader.prototype, "onParsed", {
            /** Raised when the asset has been parsed. */
            set: function (callback) {
                if (this._onParsedObserver) {
                    this.onParsedObservable.remove(this._onParsedObserver);
                }
                this._onParsedObserver = this.onParsedObservable.add(callback);
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(GLTFFileLoader.prototype, "onMeshLoaded", {
            /**
             * Raised when the loader creates a mesh after parsing the glTF properties of the mesh. (onMeshLoadedObservable is likely desired instead.)
             */
            set: function (callback) {
                if (this._onMeshLoadedObserver) {
                    this.onMeshLoadedObservable.remove(this._onMeshLoadedObserver);
                }
                this._onMeshLoadedObserver = this.onMeshLoadedObservable.add(callback);
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(GLTFFileLoader.prototype, "onTextureLoaded", {
            /**
             * Method called when a texture has been loaded (onTextureLoadedObservable is likely desired instead.)
             */
            set: function (callback) {
                if (this._onTextureLoadedObserver) {
                    this.onTextureLoadedObservable.remove(this._onTextureLoadedObserver);
                }
                this._onTextureLoadedObserver = this.onTextureLoadedObservable.add(callback);
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(GLTFFileLoader.prototype, "onMaterialLoaded", {
            /**
             * Method when the loader creates a material after parsing the glTF properties of the material. (onMaterialLoadedObservable is likely desired instead.)
             */
            set: function (callback) {
                if (this._onMaterialLoadedObserver) {
                    this.onMaterialLoadedObservable.remove(this._onMaterialLoadedObserver);
                }
                this._onMaterialLoadedObserver = this.onMaterialLoadedObservable.add(callback);
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(GLTFFileLoader.prototype, "onComplete", {
            /**
             * Raised when the asset is completely loaded, immediately before the loader is disposed. (onCompleteObservable is likely desired instead.)
             */
            set: function (callback) {
                if (this._onCompleteObserver) {
                    this.onCompleteObservable.remove(this._onCompleteObserver);
                }
                this._onCompleteObserver = this.onCompleteObservable.add(callback);
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(GLTFFileLoader.prototype, "onDispose", {
            /**
             * Raised after the loader is disposed. (onDisposeObservable is likely desired instead.)
             */
            set: function (callback) {
                if (this._onDisposeObserver) {
                    this.onDisposeObservable.remove(this._onDisposeObserver);
                }
                this._onDisposeObserver = this.onDisposeObservable.add(callback);
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(GLTFFileLoader.prototype, "onExtensionLoaded", {
            /**
             * Raised after a loader extension is created. (onExtensionLoadedObservable is likely desired instead.)
             */
            set: function (callback) {
                if (this._onExtensionLoadedObserver) {
                    this.onExtensionLoadedObservable.remove(this._onExtensionLoadedObserver);
                }
                this._onExtensionLoadedObserver = this.onExtensionLoadedObservable.add(callback);
            },
            enumerable: true,
            configurable: true
        });
        /**
         * Returns a promise that resolves when the asset is completely loaded.
         * @returns A promise that resolves when the asset is completely loaded.
         */
        GLTFFileLoader.prototype.whenCompleteAsync = function () {
            var _this = this;
            return new Promise(function (resolve) {
                _this.onCompleteObservable.add(function () {
                    resolve();
                }, undefined, undefined, undefined, true);
            });
        };
        Object.defineProperty(GLTFFileLoader.prototype, "loaderState", {
            /**
             * The loader state (LOADING, READY, COMPLETE) or null if the loader is not active.
             */
            get: function () {
                return this._loader ? this._loader.state : null;
            },
            enumerable: true,
            configurable: true
        });
        /**
         * Disposes the loader, releases resources during load, and cancels any outstanding requests.
         */
        GLTFFileLoader.prototype.dispose = function () {
            if (this._loader) {
                this._loader.dispose();
                this._loader = null;
            }
            this.onMeshLoadedObservable.clear();
            this.onTextureLoadedObservable.clear();
            this.onMaterialLoadedObservable.clear();
            this.onDisposeObservable.notifyObservers(this);
            this.onDisposeObservable.clear();
        };
        /**
        * Imports one or more meshes from a loaded gltf file and adds them to the scene
        * @param meshesNames a string or array of strings of the mesh names that should be loaded from the file
        * @param scene the scene the meshes should be added to
        * @param data gltf data containing information of the meshes in a loaded file
        * @param rootUrl root url to load from
        * @param onProgress event that fires when loading progress has occured
        * @returns a promise containg the loaded meshes, particles, skeletons and animations
        */
        GLTFFileLoader.prototype.importMeshAsync = function (meshesNames, scene, data, rootUrl, onProgress) {
            var _this = this;
            return Promise.resolve().then(function () {
                var loaderData = _this._parse(data);
                _this._loader = _this._getLoader(loaderData);
                return _this._loader.importMeshAsync(meshesNames, scene, loaderData, rootUrl, onProgress);
            });
        };
        /**
        * Imports all objects from a loaded gltf file and adds them to the scene
        * @param scene the scene the objects should be added to
        * @param data gltf data containing information of the meshes in a loaded file
        * @param rootUrl root url to load from
        * @param onProgress event that fires when loading progress has occured
        * @returns a promise which completes when objects have been loaded to the scene
        */
        GLTFFileLoader.prototype.loadAsync = function (scene, data, rootUrl, onProgress) {
            var _this = this;
            return Promise.resolve().then(function () {
                var loaderData = _this._parse(data);
                _this._loader = _this._getLoader(loaderData);
                return _this._loader.loadAsync(scene, loaderData, rootUrl, onProgress);
            });
        };
        /**
         * Load into an asset container.
         * @param scene The scene to load into
         * @param data The data to import
         * @param rootUrl The root url for scene and resources
         * @param onProgress The callback when the load progresses
         * @returns The loaded asset container
         */
        GLTFFileLoader.prototype.loadAssetContainerAsync = function (scene, data, rootUrl, onProgress) {
            var _this = this;
            return Promise.resolve().then(function () {
                var loaderData = _this._parse(data);
                _this._loader = _this._getLoader(loaderData);
                return _this._loader.importMeshAsync(null, scene, loaderData, rootUrl, onProgress).then(function (result) {
                    var container = new BABYLON.AssetContainer(scene);
                    Array.prototype.push.apply(container.meshes, result.meshes);
                    Array.prototype.push.apply(container.particleSystems, result.particleSystems);
                    Array.prototype.push.apply(container.skeletons, result.skeletons);
                    Array.prototype.push.apply(container.animationGroups, result.animationGroups);
                    container.removeAllFromScene();
                    return container;
                });
            });
        };
        /**
         * If the data string can be loaded directly
         * @param data string contianing the file data
         * @returns if the data can be loaded directly
         */
        GLTFFileLoader.prototype.canDirectLoad = function (data) {
            return ((data.indexOf("scene") !== -1) && (data.indexOf("node") !== -1));
        };
        /**
         * Instantiates a gltf file loader plugin
         * @returns the created plugin
         */
        GLTFFileLoader.prototype.createPlugin = function () {
            return new GLTFFileLoader();
        };
        GLTFFileLoader.prototype._parse = function (data) {
            var parsedData;
            if (data instanceof ArrayBuffer) {
                parsedData = GLTFFileLoader._parseBinary(data);
            }
            else {
                parsedData = {
                    json: JSON.parse(data),
                    bin: null
                };
            }
            this.onParsedObservable.notifyObservers(parsedData);
            this.onParsedObservable.clear();
            return parsedData;
        };
        GLTFFileLoader.prototype._getLoader = function (loaderData) {
            var _this = this;
            var loaderVersion = { major: 2, minor: 0 };
            var asset = loaderData.json.asset || {};
            var version = GLTFFileLoader._parseVersion(asset.version);
            if (!version) {
                throw new Error("Invalid version: " + asset.version);
            }
            if (asset.minVersion !== undefined) {
                var minVersion = GLTFFileLoader._parseVersion(asset.minVersion);
                if (!minVersion) {
                    throw new Error("Invalid minimum version: " + asset.minVersion);
                }
                if (GLTFFileLoader._compareVersion(minVersion, loaderVersion) > 0) {
                    throw new Error("Incompatible minimum version: " + asset.minVersion);
                }
            }
            var createLoaders = {
                1: GLTFFileLoader.CreateGLTFLoaderV1,
                2: GLTFFileLoader.CreateGLTFLoaderV2
            };
            var createLoader = createLoaders[version.major];
            if (!createLoader) {
                throw new Error("Unsupported version: " + asset.version);
            }
            var loader = createLoader();
            loader.coordinateSystemMode = this.coordinateSystemMode;
            loader.animationStartMode = this.animationStartMode;
            loader.compileMaterials = this.compileMaterials;
            loader.useClipPlane = this.useClipPlane;
            loader.compileShadowGenerators = this.compileShadowGenerators;
            loader.onMeshLoadedObservable.add(function (mesh) { return _this.onMeshLoadedObservable.notifyObservers(mesh); });
            loader.onTextureLoadedObservable.add(function (texture) { return _this.onTextureLoadedObservable.notifyObservers(texture); });
            loader.onMaterialLoadedObservable.add(function (material) { return _this.onMaterialLoadedObservable.notifyObservers(material); });
            loader.onExtensionLoadedObservable.add(function (extension) { return _this.onExtensionLoadedObservable.notifyObservers(extension); });
            loader.onCompleteObservable.add(function () {
                _this.onMeshLoadedObservable.clear();
                _this.onTextureLoadedObservable.clear();
                _this.onMaterialLoadedObservable.clear();
                _this.onCompleteObservable.notifyObservers(_this);
                _this.onCompleteObservable.clear();
            });
            return loader;
        };
        GLTFFileLoader._parseBinary = function (data) {
            var Binary = {
                Magic: 0x46546C67
            };
            var binaryReader = new BinaryReader(data);
            var magic = binaryReader.readUint32();
            if (magic !== Binary.Magic) {
                throw new Error("Unexpected magic: " + magic);
            }
            var version = binaryReader.readUint32();
            switch (version) {
                case 1: return GLTFFileLoader._parseV1(binaryReader);
                case 2: return GLTFFileLoader._parseV2(binaryReader);
            }
            throw new Error("Unsupported version: " + version);
        };
        GLTFFileLoader._parseV1 = function (binaryReader) {
            var ContentFormat = {
                JSON: 0
            };
            var length = binaryReader.readUint32();
            if (length != binaryReader.getLength()) {
                throw new Error("Length in header does not match actual data length: " + length + " != " + binaryReader.getLength());
            }
            var contentLength = binaryReader.readUint32();
            var contentFormat = binaryReader.readUint32();
            var content;
            switch (contentFormat) {
                case ContentFormat.JSON: {
                    content = JSON.parse(GLTFFileLoader._decodeBufferToText(binaryReader.readUint8Array(contentLength)));
                    break;
                }
                default: {
                    throw new Error("Unexpected content format: " + contentFormat);
                }
            }
            var bytesRemaining = binaryReader.getLength() - binaryReader.getPosition();
            var body = binaryReader.readUint8Array(bytesRemaining);
            return {
                json: content,
                bin: body
            };
        };
        GLTFFileLoader._parseV2 = function (binaryReader) {
            var ChunkFormat = {
                JSON: 0x4E4F534A,
                BIN: 0x004E4942
            };
            var length = binaryReader.readUint32();
            if (length !== binaryReader.getLength()) {
                throw new Error("Length in header does not match actual data length: " + length + " != " + binaryReader.getLength());
            }
            // JSON chunk
            var chunkLength = binaryReader.readUint32();
            var chunkFormat = binaryReader.readUint32();
            if (chunkFormat !== ChunkFormat.JSON) {
                throw new Error("First chunk format is not JSON");
            }
            var json = JSON.parse(GLTFFileLoader._decodeBufferToText(binaryReader.readUint8Array(chunkLength)));
            // Look for BIN chunk
            var bin = null;
            while (binaryReader.getPosition() < binaryReader.getLength()) {
                var chunkLength_1 = binaryReader.readUint32();
                var chunkFormat_1 = binaryReader.readUint32();
                switch (chunkFormat_1) {
                    case ChunkFormat.JSON: {
                        throw new Error("Unexpected JSON chunk");
                    }
                    case ChunkFormat.BIN: {
                        bin = binaryReader.readUint8Array(chunkLength_1);
                        break;
                    }
                    default: {
                        // ignore unrecognized chunkFormat
                        binaryReader.skipBytes(chunkLength_1);
                        break;
                    }
                }
            }
            return {
                json: json,
                bin: bin
            };
        };
        GLTFFileLoader._parseVersion = function (version) {
            if (version === "1.0" || version === "1.0.1") {
                return {
                    major: 1,
                    minor: 0
                };
            }
            var match = (version + "").match(/^(\d+)\.(\d+)/);
            if (!match) {
                return null;
            }
            return {
                major: parseInt(match[1]),
                minor: parseInt(match[2])
            };
        };
        GLTFFileLoader._compareVersion = function (a, b) {
            if (a.major > b.major)
                return 1;
            if (a.major < b.major)
                return -1;
            if (a.minor > b.minor)
                return 1;
            if (a.minor < b.minor)
                return -1;
            return 0;
        };
        GLTFFileLoader._decodeBufferToText = function (buffer) {
            var result = "";
            var length = buffer.byteLength;
            for (var i = 0; i < length; i++) {
                result += String.fromCharCode(buffer[i]);
            }
            return result;
        };
        // #endregion
        // #region V1 options
        /**
         * Set this property to false to disable incremental loading which delays the loader from calling the success callback until after loading the meshes and shaders. Textures always loads asynchronously. For example, the success callback can compute the bounding information of the loaded meshes when incremental loading is disabled. Defaults to true.
         */
        GLTFFileLoader.IncrementalLoading = true;
        /**
         * Set this property to true in order to work with homogeneous coordinates, available with some converters and exporters. Defaults to false. See https://en.wikipedia.org/wiki/Homogeneous_coordinates
         */
        GLTFFileLoader.HomogeneousCoordinates = false;
        return GLTFFileLoader;
    }());
    BABYLON.GLTFFileLoader = GLTFFileLoader;
    var BinaryReader = /** @class */ (function () {
        function BinaryReader(arrayBuffer) {
            this._arrayBuffer = arrayBuffer;
            this._dataView = new DataView(arrayBuffer);
            this._byteOffset = 0;
        }
        BinaryReader.prototype.getPosition = function () {
            return this._byteOffset;
        };
        BinaryReader.prototype.getLength = function () {
            return this._arrayBuffer.byteLength;
        };
        BinaryReader.prototype.readUint32 = function () {
            var value = this._dataView.getUint32(this._byteOffset, true);
            this._byteOffset += 4;
            return value;
        };
        BinaryReader.prototype.readUint8Array = function (length) {
            var value = new Uint8Array(this._arrayBuffer, this._byteOffset, length);
            this._byteOffset += length;
            return value;
        };
        BinaryReader.prototype.skipBytes = function (length) {
            this._byteOffset += length;
        };
        return BinaryReader;
    }());
    if (BABYLON.SceneLoader) {
        BABYLON.SceneLoader.RegisterPlugin(new GLTFFileLoader());
    }
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFFileLoader.js.map


var BABYLON;
(function (BABYLON) {
    var GLTF1;
    (function (GLTF1) {
        /**
        * Enums
        */
        var EComponentType;
        (function (EComponentType) {
            EComponentType[EComponentType["BYTE"] = 5120] = "BYTE";
            EComponentType[EComponentType["UNSIGNED_BYTE"] = 5121] = "UNSIGNED_BYTE";
            EComponentType[EComponentType["SHORT"] = 5122] = "SHORT";
            EComponentType[EComponentType["UNSIGNED_SHORT"] = 5123] = "UNSIGNED_SHORT";
            EComponentType[EComponentType["FLOAT"] = 5126] = "FLOAT";
        })(EComponentType = GLTF1.EComponentType || (GLTF1.EComponentType = {}));
        var EShaderType;
        (function (EShaderType) {
            EShaderType[EShaderType["FRAGMENT"] = 35632] = "FRAGMENT";
            EShaderType[EShaderType["VERTEX"] = 35633] = "VERTEX";
        })(EShaderType = GLTF1.EShaderType || (GLTF1.EShaderType = {}));
        var EParameterType;
        (function (EParameterType) {
            EParameterType[EParameterType["BYTE"] = 5120] = "BYTE";
            EParameterType[EParameterType["UNSIGNED_BYTE"] = 5121] = "UNSIGNED_BYTE";
            EParameterType[EParameterType["SHORT"] = 5122] = "SHORT";
            EParameterType[EParameterType["UNSIGNED_SHORT"] = 5123] = "UNSIGNED_SHORT";
            EParameterType[EParameterType["INT"] = 5124] = "INT";
            EParameterType[EParameterType["UNSIGNED_INT"] = 5125] = "UNSIGNED_INT";
            EParameterType[EParameterType["FLOAT"] = 5126] = "FLOAT";
            EParameterType[EParameterType["FLOAT_VEC2"] = 35664] = "FLOAT_VEC2";
            EParameterType[EParameterType["FLOAT_VEC3"] = 35665] = "FLOAT_VEC3";
            EParameterType[EParameterType["FLOAT_VEC4"] = 35666] = "FLOAT_VEC4";
            EParameterType[EParameterType["INT_VEC2"] = 35667] = "INT_VEC2";
            EParameterType[EParameterType["INT_VEC3"] = 35668] = "INT_VEC3";
            EParameterType[EParameterType["INT_VEC4"] = 35669] = "INT_VEC4";
            EParameterType[EParameterType["BOOL"] = 35670] = "BOOL";
            EParameterType[EParameterType["BOOL_VEC2"] = 35671] = "BOOL_VEC2";
            EParameterType[EParameterType["BOOL_VEC3"] = 35672] = "BOOL_VEC3";
            EParameterType[EParameterType["BOOL_VEC4"] = 35673] = "BOOL_VEC4";
            EParameterType[EParameterType["FLOAT_MAT2"] = 35674] = "FLOAT_MAT2";
            EParameterType[EParameterType["FLOAT_MAT3"] = 35675] = "FLOAT_MAT3";
            EParameterType[EParameterType["FLOAT_MAT4"] = 35676] = "FLOAT_MAT4";
            EParameterType[EParameterType["SAMPLER_2D"] = 35678] = "SAMPLER_2D";
        })(EParameterType = GLTF1.EParameterType || (GLTF1.EParameterType = {}));
        var ETextureWrapMode;
        (function (ETextureWrapMode) {
            ETextureWrapMode[ETextureWrapMode["CLAMP_TO_EDGE"] = 33071] = "CLAMP_TO_EDGE";
            ETextureWrapMode[ETextureWrapMode["MIRRORED_REPEAT"] = 33648] = "MIRRORED_REPEAT";
            ETextureWrapMode[ETextureWrapMode["REPEAT"] = 10497] = "REPEAT";
        })(ETextureWrapMode = GLTF1.ETextureWrapMode || (GLTF1.ETextureWrapMode = {}));
        var ETextureFilterType;
        (function (ETextureFilterType) {
            ETextureFilterType[ETextureFilterType["NEAREST"] = 9728] = "NEAREST";
            ETextureFilterType[ETextureFilterType["LINEAR"] = 9728] = "LINEAR";
            ETextureFilterType[ETextureFilterType["NEAREST_MIPMAP_NEAREST"] = 9984] = "NEAREST_MIPMAP_NEAREST";
            ETextureFilterType[ETextureFilterType["LINEAR_MIPMAP_NEAREST"] = 9985] = "LINEAR_MIPMAP_NEAREST";
            ETextureFilterType[ETextureFilterType["NEAREST_MIPMAP_LINEAR"] = 9986] = "NEAREST_MIPMAP_LINEAR";
            ETextureFilterType[ETextureFilterType["LINEAR_MIPMAP_LINEAR"] = 9987] = "LINEAR_MIPMAP_LINEAR";
        })(ETextureFilterType = GLTF1.ETextureFilterType || (GLTF1.ETextureFilterType = {}));
        var ETextureFormat;
        (function (ETextureFormat) {
            ETextureFormat[ETextureFormat["ALPHA"] = 6406] = "ALPHA";
            ETextureFormat[ETextureFormat["RGB"] = 6407] = "RGB";
            ETextureFormat[ETextureFormat["RGBA"] = 6408] = "RGBA";
            ETextureFormat[ETextureFormat["LUMINANCE"] = 6409] = "LUMINANCE";
            ETextureFormat[ETextureFormat["LUMINANCE_ALPHA"] = 6410] = "LUMINANCE_ALPHA";
        })(ETextureFormat = GLTF1.ETextureFormat || (GLTF1.ETextureFormat = {}));
        var ECullingType;
        (function (ECullingType) {
            ECullingType[ECullingType["FRONT"] = 1028] = "FRONT";
            ECullingType[ECullingType["BACK"] = 1029] = "BACK";
            ECullingType[ECullingType["FRONT_AND_BACK"] = 1032] = "FRONT_AND_BACK";
        })(ECullingType = GLTF1.ECullingType || (GLTF1.ECullingType = {}));
        var EBlendingFunction;
        (function (EBlendingFunction) {
            EBlendingFunction[EBlendingFunction["ZERO"] = 0] = "ZERO";
            EBlendingFunction[EBlendingFunction["ONE"] = 1] = "ONE";
            EBlendingFunction[EBlendingFunction["SRC_COLOR"] = 768] = "SRC_COLOR";
            EBlendingFunction[EBlendingFunction["ONE_MINUS_SRC_COLOR"] = 769] = "ONE_MINUS_SRC_COLOR";
            EBlendingFunction[EBlendingFunction["DST_COLOR"] = 774] = "DST_COLOR";
            EBlendingFunction[EBlendingFunction["ONE_MINUS_DST_COLOR"] = 775] = "ONE_MINUS_DST_COLOR";
            EBlendingFunction[EBlendingFunction["SRC_ALPHA"] = 770] = "SRC_ALPHA";
            EBlendingFunction[EBlendingFunction["ONE_MINUS_SRC_ALPHA"] = 771] = "ONE_MINUS_SRC_ALPHA";
            EBlendingFunction[EBlendingFunction["DST_ALPHA"] = 772] = "DST_ALPHA";
            EBlendingFunction[EBlendingFunction["ONE_MINUS_DST_ALPHA"] = 773] = "ONE_MINUS_DST_ALPHA";
            EBlendingFunction[EBlendingFunction["CONSTANT_COLOR"] = 32769] = "CONSTANT_COLOR";
            EBlendingFunction[EBlendingFunction["ONE_MINUS_CONSTANT_COLOR"] = 32770] = "ONE_MINUS_CONSTANT_COLOR";
            EBlendingFunction[EBlendingFunction["CONSTANT_ALPHA"] = 32771] = "CONSTANT_ALPHA";
            EBlendingFunction[EBlendingFunction["ONE_MINUS_CONSTANT_ALPHA"] = 32772] = "ONE_MINUS_CONSTANT_ALPHA";
            EBlendingFunction[EBlendingFunction["SRC_ALPHA_SATURATE"] = 776] = "SRC_ALPHA_SATURATE";
        })(EBlendingFunction = GLTF1.EBlendingFunction || (GLTF1.EBlendingFunction = {}));
    })(GLTF1 = BABYLON.GLTF1 || (BABYLON.GLTF1 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFLoaderInterfaces.js.map


var BABYLON;
(function (BABYLON) {
    var GLTF1;
    (function (GLTF1) {
        /**
        * Tokenizer. Used for shaders compatibility
        * Automatically map world, view, projection, worldViewProjection, attributes and so on
        */
        var ETokenType;
        (function (ETokenType) {
            ETokenType[ETokenType["IDENTIFIER"] = 1] = "IDENTIFIER";
            ETokenType[ETokenType["UNKNOWN"] = 2] = "UNKNOWN";
            ETokenType[ETokenType["END_OF_INPUT"] = 3] = "END_OF_INPUT";
        })(ETokenType || (ETokenType = {}));
        var Tokenizer = /** @class */ (function () {
            function Tokenizer(toParse) {
                this._pos = 0;
                this.currentToken = ETokenType.UNKNOWN;
                this.currentIdentifier = "";
                this.currentString = "";
                this.isLetterOrDigitPattern = /^[a-zA-Z0-9]+$/;
                this._toParse = toParse;
                this._maxPos = toParse.length;
            }
            Tokenizer.prototype.getNextToken = function () {
                if (this.isEnd())
                    return ETokenType.END_OF_INPUT;
                this.currentString = this.read();
                this.currentToken = ETokenType.UNKNOWN;
                if (this.currentString === "_" || this.isLetterOrDigitPattern.test(this.currentString)) {
                    this.currentToken = ETokenType.IDENTIFIER;
                    this.currentIdentifier = this.currentString;
                    while (!this.isEnd() && (this.isLetterOrDigitPattern.test(this.currentString = this.peek()) || this.currentString === "_")) {
                        this.currentIdentifier += this.currentString;
                        this.forward();
                    }
                }
                return this.currentToken;
            };
            Tokenizer.prototype.peek = function () {
                return this._toParse[this._pos];
            };
            Tokenizer.prototype.read = function () {
                return this._toParse[this._pos++];
            };
            Tokenizer.prototype.forward = function () {
                this._pos++;
            };
            Tokenizer.prototype.isEnd = function () {
                return this._pos >= this._maxPos;
            };
            return Tokenizer;
        }());
        /**
        * Values
        */
        var glTFTransforms = ["MODEL", "VIEW", "PROJECTION", "MODELVIEW", "MODELVIEWPROJECTION", "JOINTMATRIX"];
        var babylonTransforms = ["world", "view", "projection", "worldView", "worldViewProjection", "mBones"];
        var glTFAnimationPaths = ["translation", "rotation", "scale"];
        var babylonAnimationPaths = ["position", "rotationQuaternion", "scaling"];
        /**
        * Parse
        */
        var parseBuffers = function (parsedBuffers, gltfRuntime) {
            for (var buf in parsedBuffers) {
                var parsedBuffer = parsedBuffers[buf];
                gltfRuntime.buffers[buf] = parsedBuffer;
                gltfRuntime.buffersCount++;
            }
        };
        var parseShaders = function (parsedShaders, gltfRuntime) {
            for (var sha in parsedShaders) {
                var parsedShader = parsedShaders[sha];
                gltfRuntime.shaders[sha] = parsedShader;
                gltfRuntime.shaderscount++;
            }
        };
        var parseObject = function (parsedObjects, runtimeProperty, gltfRuntime) {
            for (var object in parsedObjects) {
                var parsedObject = parsedObjects[object];
                gltfRuntime[runtimeProperty][object] = parsedObject;
            }
        };
        /**
        * Utils
        */
        var normalizeUVs = function (buffer) {
            if (!buffer) {
                return;
            }
            for (var i = 0; i < buffer.length / 2; i++) {
                buffer[i * 2 + 1] = 1.0 - buffer[i * 2 + 1];
            }
        };
        var getAttribute = function (attributeParameter) {
            if (attributeParameter.semantic === "NORMAL") {
                return "normal";
            }
            else if (attributeParameter.semantic === "POSITION") {
                return "position";
            }
            else if (attributeParameter.semantic === "JOINT") {
                return "matricesIndices";
            }
            else if (attributeParameter.semantic === "WEIGHT") {
                return "matricesWeights";
            }
            else if (attributeParameter.semantic === "COLOR") {
                return "color";
            }
            else if (attributeParameter.semantic && attributeParameter.semantic.indexOf("TEXCOORD_") !== -1) {
                var channel = Number(attributeParameter.semantic.split("_")[1]);
                return "uv" + (channel === 0 ? "" : channel + 1);
            }
            return null;
        };
        /**
        * Loads and creates animations
        */
        var loadAnimations = function (gltfRuntime) {
            for (var anim in gltfRuntime.animations) {
                var animation = gltfRuntime.animations[anim];
                if (!animation.channels || !animation.samplers) {
                    continue;
                }
                var lastAnimation = null;
                for (var i = 0; i < animation.channels.length; i++) {
                    // Get parameters and load buffers
                    var channel = animation.channels[i];
                    var sampler = animation.samplers[channel.sampler];
                    if (!sampler) {
                        continue;
                    }
                    var inputData = null;
                    var outputData = null;
                    if (animation.parameters) {
                        inputData = animation.parameters[sampler.input];
                        outputData = animation.parameters[sampler.output];
                    }
                    else {
                        inputData = sampler.input;
                        outputData = sampler.output;
                    }
                    var bufferInput = GLTF1.GLTFUtils.GetBufferFromAccessor(gltfRuntime, gltfRuntime.accessors[inputData]);
                    var bufferOutput = GLTF1.GLTFUtils.GetBufferFromAccessor(gltfRuntime, gltfRuntime.accessors[outputData]);
                    var targetID = channel.target.id;
                    var targetNode = gltfRuntime.scene.getNodeByID(targetID);
                    if (targetNode === null) {
                        targetNode = gltfRuntime.scene.getNodeByName(targetID);
                    }
                    if (targetNode === null) {
                        BABYLON.Tools.Warn("Creating animation named " + anim + ". But cannot find node named " + targetID + " to attach to");
                        continue;
                    }
                    var isBone = targetNode instanceof BABYLON.Bone;
                    // Get target path (position, rotation or scaling)
                    var targetPath = channel.target.path;
                    var targetPathIndex = glTFAnimationPaths.indexOf(targetPath);
                    if (targetPathIndex !== -1) {
                        targetPath = babylonAnimationPaths[targetPathIndex];
                    }
                    // Determine animation type
                    var animationType = BABYLON.Animation.ANIMATIONTYPE_MATRIX;
                    if (!isBone) {
                        if (targetPath === "rotationQuaternion") {
                            animationType = BABYLON.Animation.ANIMATIONTYPE_QUATERNION;
                            targetNode.rotationQuaternion = new BABYLON.Quaternion();
                        }
                        else {
                            animationType = BABYLON.Animation.ANIMATIONTYPE_VECTOR3;
                        }
                    }
                    // Create animation and key frames
                    var babylonAnimation = null;
                    var keys = [];
                    var arrayOffset = 0;
                    var modifyKey = false;
                    if (isBone && lastAnimation && lastAnimation.getKeys().length === bufferInput.length) {
                        babylonAnimation = lastAnimation;
                        modifyKey = true;
                    }
                    if (!modifyKey) {
                        babylonAnimation = new BABYLON.Animation(anim, isBone ? "_matrix" : targetPath, 1, animationType, BABYLON.Animation.ANIMATIONLOOPMODE_CYCLE);
                    }
                    // For each frame
                    for (var j = 0; j < bufferInput.length; j++) {
                        var value = null;
                        if (targetPath === "rotationQuaternion") { // VEC4
                            value = BABYLON.Quaternion.FromArray([bufferOutput[arrayOffset], bufferOutput[arrayOffset + 1], bufferOutput[arrayOffset + 2], bufferOutput[arrayOffset + 3]]);
                            arrayOffset += 4;
                        }
                        else { // Position and scaling are VEC3
                            value = BABYLON.Vector3.FromArray([bufferOutput[arrayOffset], bufferOutput[arrayOffset + 1], bufferOutput[arrayOffset + 2]]);
                            arrayOffset += 3;
                        }
                        if (isBone) {
                            var bone = targetNode;
                            var translation = BABYLON.Vector3.Zero();
                            var rotationQuaternion = new BABYLON.Quaternion();
                            var scaling = BABYLON.Vector3.Zero();
                            // Warning on decompose
                            var mat = bone.getBaseMatrix();
                            if (modifyKey && lastAnimation) {
                                mat = lastAnimation.getKeys()[j].value;
                            }
                            mat.decompose(scaling, rotationQuaternion, translation);
                            if (targetPath === "position") {
                                translation = value;
                            }
                            else if (targetPath === "rotationQuaternion") {
                                rotationQuaternion = value;
                            }
                            else {
                                scaling = value;
                            }
                            value = BABYLON.Matrix.Compose(scaling, rotationQuaternion, translation);
                        }
                        if (!modifyKey) {
                            keys.push({
                                frame: bufferInput[j],
                                value: value
                            });
                        }
                        else if (lastAnimation) {
                            lastAnimation.getKeys()[j].value = value;
                        }
                    }
                    // Finish
                    if (!modifyKey && babylonAnimation) {
                        babylonAnimation.setKeys(keys);
                        targetNode.animations.push(babylonAnimation);
                    }
                    lastAnimation = babylonAnimation;
                    gltfRuntime.scene.stopAnimation(targetNode);
                    gltfRuntime.scene.beginAnimation(targetNode, 0, bufferInput[bufferInput.length - 1], true, 1.0);
                }
            }
        };
        /**
        * Returns the bones transformation matrix
        */
        var configureBoneTransformation = function (node) {
            var mat = null;
            if (node.translation || node.rotation || node.scale) {
                var scale = BABYLON.Vector3.FromArray(node.scale || [1, 1, 1]);
                var rotation = BABYLON.Quaternion.FromArray(node.rotation || [0, 0, 0, 1]);
                var position = BABYLON.Vector3.FromArray(node.translation || [0, 0, 0]);
                mat = BABYLON.Matrix.Compose(scale, rotation, position);
            }
            else {
                mat = BABYLON.Matrix.FromArray(node.matrix);
            }
            return mat;
        };
        /**
        * Returns the parent bone
        */
        var getParentBone = function (gltfRuntime, skins, jointName, newSkeleton) {
            // Try to find
            for (var i = 0; i < newSkeleton.bones.length; i++) {
                if (newSkeleton.bones[i].name === jointName) {
                    return newSkeleton.bones[i];
                }
            }
            // Not found, search in gltf nodes
            var nodes = gltfRuntime.nodes;
            for (var nde in nodes) {
                var node = nodes[nde];
                if (!node.jointName) {
                    continue;
                }
                var children = node.children;
                for (var i = 0; i < children.length; i++) {
                    var child = gltfRuntime.nodes[children[i]];
                    if (!child.jointName) {
                        continue;
                    }
                    if (child.jointName === jointName) {
                        var mat = configureBoneTransformation(node);
                        var bone = new BABYLON.Bone(node.name || "", newSkeleton, getParentBone(gltfRuntime, skins, node.jointName, newSkeleton), mat);
                        bone.id = nde;
                        return bone;
                    }
                }
            }
            return null;
        };
        /**
        * Returns the appropriate root node
        */
        var getNodeToRoot = function (nodesToRoot, id) {
            for (var i = 0; i < nodesToRoot.length; i++) {
                var nodeToRoot = nodesToRoot[i];
                for (var j = 0; j < nodeToRoot.node.children.length; j++) {
                    var child = nodeToRoot.node.children[j];
                    if (child === id) {
                        return nodeToRoot.bone;
                    }
                }
            }
            return null;
        };
        /**
        * Returns the node with the joint name
        */
        var getJointNode = function (gltfRuntime, jointName) {
            var nodes = gltfRuntime.nodes;
            var node = nodes[jointName];
            if (node) {
                return {
                    node: node,
                    id: jointName
                };
            }
            for (var nde in nodes) {
                node = nodes[nde];
                if (node.jointName === jointName) {
                    return {
                        node: node,
                        id: nde
                    };
                }
            }
            return null;
        };
        /**
        * Checks if a nodes is in joints
        */
        var nodeIsInJoints = function (skins, id) {
            for (var i = 0; i < skins.jointNames.length; i++) {
                if (skins.jointNames[i] === id) {
                    return true;
                }
            }
            return false;
        };
        /**
        * Fills the nodes to root for bones and builds hierarchy
        */
        var getNodesToRoot = function (gltfRuntime, newSkeleton, skins, nodesToRoot) {
            // Creates nodes for root
            for (var nde in gltfRuntime.nodes) {
                var node = gltfRuntime.nodes[nde];
                var id = nde;
                if (!node.jointName || nodeIsInJoints(skins, node.jointName)) {
                    continue;
                }
                // Create node to root bone
                var mat = configureBoneTransformation(node);
                var bone = new BABYLON.Bone(node.name || "", newSkeleton, null, mat);
                bone.id = id;
                nodesToRoot.push({ bone: bone, node: node, id: id });
            }
            // Parenting
            for (var i = 0; i < nodesToRoot.length; i++) {
                var nodeToRoot = nodesToRoot[i];
                var children = nodeToRoot.node.children;
                for (var j = 0; j < children.length; j++) {
                    var child = null;
                    for (var k = 0; k < nodesToRoot.length; k++) {
                        if (nodesToRoot[k].id === children[j]) {
                            child = nodesToRoot[k];
                            break;
                        }
                    }
                    if (child) {
                        child.bone._parent = nodeToRoot.bone;
                        nodeToRoot.bone.children.push(child.bone);
                    }
                }
            }
        };
        /**
        * Imports a skeleton
        */
        var importSkeleton = function (gltfRuntime, skins, mesh, newSkeleton, id) {
            if (!newSkeleton) {
                newSkeleton = new BABYLON.Skeleton(skins.name || "", "", gltfRuntime.scene);
            }
            if (!skins.babylonSkeleton) {
                return newSkeleton;
            }
            // Find the root bones
            var nodesToRoot = [];
            var nodesToRootToAdd = [];
            getNodesToRoot(gltfRuntime, newSkeleton, skins, nodesToRoot);
            newSkeleton.bones = [];
            // Joints
            for (var i = 0; i < skins.jointNames.length; i++) {
                var jointNode = getJointNode(gltfRuntime, skins.jointNames[i]);
                if (!jointNode) {
                    continue;
                }
                var node = jointNode.node;
                if (!node) {
                    BABYLON.Tools.Warn("Joint named " + skins.jointNames[i] + " does not exist");
                    continue;
                }
                var id = jointNode.id;
                // Optimize, if the bone already exists...
                var existingBone = gltfRuntime.scene.getBoneByID(id);
                if (existingBone) {
                    newSkeleton.bones.push(existingBone);
                    continue;
                }
                // Search for parent bone
                var foundBone = false;
                var parentBone = null;
                for (var j = 0; j < i; j++) {
                    var jointNode_1 = getJointNode(gltfRuntime, skins.jointNames[j]);
                    if (!jointNode_1) {
                        continue;
                    }
                    var joint = jointNode_1.node;
                    if (!joint) {
                        BABYLON.Tools.Warn("Joint named " + skins.jointNames[j] + " does not exist when looking for parent");
                        continue;
                    }
                    var children = joint.children;
                    if (!children) {
                        continue;
                    }
                    foundBone = false;
                    for (var k = 0; k < children.length; k++) {
                        if (children[k] === id) {
                            parentBone = getParentBone(gltfRuntime, skins, skins.jointNames[j], newSkeleton);
                            foundBone = true;
                            break;
                        }
                    }
                    if (foundBone) {
                        break;
                    }
                }
                // Create bone
                var mat = configureBoneTransformation(node);
                if (!parentBone && nodesToRoot.length > 0) {
                    parentBone = getNodeToRoot(nodesToRoot, id);
                    if (parentBone) {
                        if (nodesToRootToAdd.indexOf(parentBone) === -1) {
                            nodesToRootToAdd.push(parentBone);
                        }
                    }
                }
                var bone = new BABYLON.Bone(node.jointName || "", newSkeleton, parentBone, mat);
                bone.id = id;
            }
            // Polish
            var bones = newSkeleton.bones;
            newSkeleton.bones = [];
            for (var i = 0; i < skins.jointNames.length; i++) {
                var jointNode = getJointNode(gltfRuntime, skins.jointNames[i]);
                if (!jointNode) {
                    continue;
                }
                for (var j = 0; j < bones.length; j++) {
                    if (bones[j].id === jointNode.id) {
                        newSkeleton.bones.push(bones[j]);
                        break;
                    }
                }
            }
            newSkeleton.prepare();
            // Finish
            for (var i = 0; i < nodesToRootToAdd.length; i++) {
                newSkeleton.bones.push(nodesToRootToAdd[i]);
            }
            return newSkeleton;
        };
        /**
        * Imports a mesh and its geometries
        */
        var importMesh = function (gltfRuntime, node, meshes, id, newMesh) {
            if (!newMesh) {
                newMesh = new BABYLON.Mesh(node.name || "", gltfRuntime.scene);
                newMesh.id = id;
            }
            if (!node.babylonNode) {
                return newMesh;
            }
            var subMaterials = [];
            var vertexData = null;
            var verticesStarts = new Array();
            var verticesCounts = new Array();
            var indexStarts = new Array();
            var indexCounts = new Array();
            for (var meshIndex = 0; meshIndex < meshes.length; meshIndex++) {
                var meshID = meshes[meshIndex];
                var mesh = gltfRuntime.meshes[meshID];
                if (!mesh) {
                    continue;
                }
                // Positions, normals and UVs
                for (var i = 0; i < mesh.primitives.length; i++) {
                    // Temporary vertex data
                    var tempVertexData = new BABYLON.VertexData();
                    var primitive = mesh.primitives[i];
                    if (primitive.mode !== 4) {
                        // continue;
                    }
                    var attributes = primitive.attributes;
                    var accessor = null;
                    var buffer = null;
                    // Set positions, normal and uvs
                    for (var semantic in attributes) {
                        // Link accessor and buffer view
                        accessor = gltfRuntime.accessors[attributes[semantic]];
                        buffer = GLTF1.GLTFUtils.GetBufferFromAccessor(gltfRuntime, accessor);
                        if (semantic === "NORMAL") {
                            tempVertexData.normals = new Float32Array(buffer.length);
                            tempVertexData.normals.set(buffer);
                        }
                        else if (semantic === "POSITION") {
                            if (BABYLON.GLTFFileLoader.HomogeneousCoordinates) {
                                tempVertexData.positions = new Float32Array(buffer.length - buffer.length / 4);
                                for (var j = 0; j < buffer.length; j += 4) {
                                    tempVertexData.positions[j] = buffer[j];
                                    tempVertexData.positions[j + 1] = buffer[j + 1];
                                    tempVertexData.positions[j + 2] = buffer[j + 2];
                                }
                            }
                            else {
                                tempVertexData.positions = new Float32Array(buffer.length);
                                tempVertexData.positions.set(buffer);
                            }
                            verticesCounts.push(tempVertexData.positions.length);
                        }
                        else if (semantic.indexOf("TEXCOORD_") !== -1) {
                            var channel = Number(semantic.split("_")[1]);
                            var uvKind = BABYLON.VertexBuffer.UVKind + (channel === 0 ? "" : (channel + 1));
                            var uvs = new Float32Array(buffer.length);
                            uvs.set(buffer);
                            normalizeUVs(uvs);
                            tempVertexData.set(uvs, uvKind);
                        }
                        else if (semantic === "JOINT") {
                            tempVertexData.matricesIndices = new Float32Array(buffer.length);
                            tempVertexData.matricesIndices.set(buffer);
                        }
                        else if (semantic === "WEIGHT") {
                            tempVertexData.matricesWeights = new Float32Array(buffer.length);
                            tempVertexData.matricesWeights.set(buffer);
                        }
                        else if (semantic === "COLOR") {
                            tempVertexData.colors = new Float32Array(buffer.length);
                            tempVertexData.colors.set(buffer);
                        }
                    }
                    // Indices
                    accessor = gltfRuntime.accessors[primitive.indices];
                    if (accessor) {
                        buffer = GLTF1.GLTFUtils.GetBufferFromAccessor(gltfRuntime, accessor);
                        tempVertexData.indices = new Int32Array(buffer.length);
                        tempVertexData.indices.set(buffer);
                        indexCounts.push(tempVertexData.indices.length);
                    }
                    else {
                        // Set indices on the fly
                        var indices = [];
                        for (var j = 0; j < tempVertexData.positions.length / 3; j++) {
                            indices.push(j);
                        }
                        tempVertexData.indices = new Int32Array(indices);
                        indexCounts.push(tempVertexData.indices.length);
                    }
                    if (!vertexData) {
                        vertexData = tempVertexData;
                    }
                    else {
                        vertexData.merge(tempVertexData);
                    }
                    // Sub material
                    var material_1 = gltfRuntime.scene.getMaterialByID(primitive.material);
                    subMaterials.push(material_1 === null ? GLTF1.GLTFUtils.GetDefaultMaterial(gltfRuntime.scene) : material_1);
                    // Update vertices start and index start
                    verticesStarts.push(verticesStarts.length === 0 ? 0 : verticesStarts[verticesStarts.length - 1] + verticesCounts[verticesCounts.length - 2]);
                    indexStarts.push(indexStarts.length === 0 ? 0 : indexStarts[indexStarts.length - 1] + indexCounts[indexCounts.length - 2]);
                }
            }
            var material;
            if (subMaterials.length > 1) {
                material = new BABYLON.MultiMaterial("multimat" + id, gltfRuntime.scene);
                material.subMaterials = subMaterials;
            }
            else {
                material = new BABYLON.StandardMaterial("multimat" + id, gltfRuntime.scene);
            }
            if (subMaterials.length === 1) {
                material = subMaterials[0];
            }
            if (!newMesh.material) {
                newMesh.material = material;
            }
            // Apply geometry
            new BABYLON.Geometry(id, gltfRuntime.scene, vertexData, false, newMesh);
            newMesh.computeWorldMatrix(true);
            // Apply submeshes
            newMesh.subMeshes = [];
            var index = 0;
            for (var meshIndex = 0; meshIndex < meshes.length; meshIndex++) {
                var meshID = meshes[meshIndex];
                var mesh = gltfRuntime.meshes[meshID];
                if (!mesh) {
                    continue;
                }
                for (var i = 0; i < mesh.primitives.length; i++) {
                    if (mesh.primitives[i].mode !== 4) {
                        //continue;
                    }
                    BABYLON.SubMesh.AddToMesh(index, verticesStarts[index], verticesCounts[index], indexStarts[index], indexCounts[index], newMesh, newMesh, true);
                    index++;
                }
            }
            // Finish
            return newMesh;
        };
        /**
        * Configure node transformation from position, rotation and scaling
        */
        var configureNode = function (newNode, position, rotation, scaling) {
            if (newNode.position) {
                newNode.position = position;
            }
            if (newNode.rotationQuaternion || newNode.rotation) {
                newNode.rotationQuaternion = rotation;
            }
            if (newNode.scaling) {
                newNode.scaling = scaling;
            }
        };
        /**
        * Configures node from transformation matrix
        */
        var configureNodeFromMatrix = function (newNode, node, parent) {
            if (node.matrix) {
                var position = new BABYLON.Vector3(0, 0, 0);
                var rotation = new BABYLON.Quaternion();
                var scaling = new BABYLON.Vector3(0, 0, 0);
                var mat = BABYLON.Matrix.FromArray(node.matrix);
                mat.decompose(scaling, rotation, position);
                configureNode(newNode, position, rotation, scaling);
            }
            else if (node.translation && node.rotation && node.scale) {
                configureNode(newNode, BABYLON.Vector3.FromArray(node.translation), BABYLON.Quaternion.FromArray(node.rotation), BABYLON.Vector3.FromArray(node.scale));
            }
            newNode.computeWorldMatrix(true);
        };
        /**
        * Imports a node
        */
        var importNode = function (gltfRuntime, node, id, parent) {
            var lastNode = null;
            if (gltfRuntime.importOnlyMeshes && (node.skin || node.meshes)) {
                if (gltfRuntime.importMeshesNames && gltfRuntime.importMeshesNames.length > 0 && gltfRuntime.importMeshesNames.indexOf(node.name || "") === -1) {
                    return null;
                }
            }
            // Meshes
            if (node.skin) {
                if (node.meshes) {
                    var skin = gltfRuntime.skins[node.skin];
                    var newMesh = importMesh(gltfRuntime, node, node.meshes, id, node.babylonNode);
                    newMesh.skeleton = gltfRuntime.scene.getLastSkeletonByID(node.skin);
                    if (newMesh.skeleton === null) {
                        newMesh.skeleton = importSkeleton(gltfRuntime, skin, newMesh, skin.babylonSkeleton, node.skin);
                        if (!skin.babylonSkeleton) {
                            skin.babylonSkeleton = newMesh.skeleton;
                        }
                    }
                    lastNode = newMesh;
                }
            }
            else if (node.meshes) {
                /**
                * Improve meshes property
                */
                var newMesh = importMesh(gltfRuntime, node, node.mesh ? [node.mesh] : node.meshes, id, node.babylonNode);
                lastNode = newMesh;
            }
            // Lights
            else if (node.light && !node.babylonNode && !gltfRuntime.importOnlyMeshes) {
                var light = gltfRuntime.lights[node.light];
                if (light) {
                    if (light.type === "ambient") {
                        var ambienLight = light[light.type];
                        var hemiLight = new BABYLON.HemisphericLight(node.light, BABYLON.Vector3.Zero(), gltfRuntime.scene);
                        hemiLight.name = node.name || "";
                        if (ambienLight.color) {
                            hemiLight.diffuse = BABYLON.Color3.FromArray(ambienLight.color);
                        }
                        lastNode = hemiLight;
                    }
                    else if (light.type === "directional") {
                        var directionalLight = light[light.type];
                        var dirLight = new BABYLON.DirectionalLight(node.light, BABYLON.Vector3.Zero(), gltfRuntime.scene);
                        dirLight.name = node.name || "";
                        if (directionalLight.color) {
                            dirLight.diffuse = BABYLON.Color3.FromArray(directionalLight.color);
                        }
                        lastNode = dirLight;
                    }
                    else if (light.type === "point") {
                        var pointLight = light[light.type];
                        var ptLight = new BABYLON.PointLight(node.light, BABYLON.Vector3.Zero(), gltfRuntime.scene);
                        ptLight.name = node.name || "";
                        if (pointLight.color) {
                            ptLight.diffuse = BABYLON.Color3.FromArray(pointLight.color);
                        }
                        lastNode = ptLight;
                    }
                    else if (light.type === "spot") {
                        var spotLight = light[light.type];
                        var spLight = new BABYLON.SpotLight(node.light, BABYLON.Vector3.Zero(), BABYLON.Vector3.Zero(), 0, 0, gltfRuntime.scene);
                        spLight.name = node.name || "";
                        if (spotLight.color) {
                            spLight.diffuse = BABYLON.Color3.FromArray(spotLight.color);
                        }
                        if (spotLight.fallOfAngle) {
                            spLight.angle = spotLight.fallOfAngle;
                        }
                        if (spotLight.fallOffExponent) {
                            spLight.exponent = spotLight.fallOffExponent;
                        }
                        lastNode = spLight;
                    }
                }
            }
            // Cameras
            else if (node.camera && !node.babylonNode && !gltfRuntime.importOnlyMeshes) {
                var camera = gltfRuntime.cameras[node.camera];
                if (camera) {
                    if (camera.type === "orthographic") {
                        var orthoCamera = new BABYLON.FreeCamera(node.camera, BABYLON.Vector3.Zero(), gltfRuntime.scene);
                        orthoCamera.name = node.name || "";
                        orthoCamera.mode = BABYLON.Camera.ORTHOGRAPHIC_CAMERA;
                        orthoCamera.attachControl(gltfRuntime.scene.getEngine().getRenderingCanvas());
                        lastNode = orthoCamera;
                    }
                    else if (camera.type === "perspective") {
                        var perspectiveCamera = camera[camera.type];
                        var persCamera = new BABYLON.FreeCamera(node.camera, BABYLON.Vector3.Zero(), gltfRuntime.scene);
                        persCamera.name = node.name || "";
                        persCamera.attachControl(gltfRuntime.scene.getEngine().getRenderingCanvas());
                        if (!perspectiveCamera.aspectRatio) {
                            perspectiveCamera.aspectRatio = gltfRuntime.scene.getEngine().getRenderWidth() / gltfRuntime.scene.getEngine().getRenderHeight();
                        }
                        if (perspectiveCamera.znear && perspectiveCamera.zfar) {
                            persCamera.maxZ = perspectiveCamera.zfar;
                            persCamera.minZ = perspectiveCamera.znear;
                        }
                        lastNode = persCamera;
                    }
                }
            }
            // Empty node
            if (!node.jointName) {
                if (node.babylonNode) {
                    return node.babylonNode;
                }
                else if (lastNode === null) {
                    var dummy = new BABYLON.Mesh(node.name || "", gltfRuntime.scene);
                    node.babylonNode = dummy;
                    lastNode = dummy;
                }
            }
            if (lastNode !== null) {
                if (node.matrix && lastNode instanceof BABYLON.Mesh) {
                    configureNodeFromMatrix(lastNode, node, parent);
                }
                else {
                    var translation = node.translation || [0, 0, 0];
                    var rotation = node.rotation || [0, 0, 0, 1];
                    var scale = node.scale || [1, 1, 1];
                    configureNode(lastNode, BABYLON.Vector3.FromArray(translation), BABYLON.Quaternion.FromArray(rotation), BABYLON.Vector3.FromArray(scale));
                }
                lastNode.updateCache(true);
                node.babylonNode = lastNode;
            }
            return lastNode;
        };
        /**
        * Traverses nodes and creates them
        */
        var traverseNodes = function (gltfRuntime, id, parent, meshIncluded) {
            if (meshIncluded === void 0) { meshIncluded = false; }
            var node = gltfRuntime.nodes[id];
            var newNode = null;
            if (gltfRuntime.importOnlyMeshes && !meshIncluded && gltfRuntime.importMeshesNames) {
                if (gltfRuntime.importMeshesNames.indexOf(node.name || "") !== -1 || gltfRuntime.importMeshesNames.length === 0) {
                    meshIncluded = true;
                }
                else {
                    meshIncluded = false;
                }
            }
            else {
                meshIncluded = true;
            }
            if (!node.jointName && meshIncluded) {
                newNode = importNode(gltfRuntime, node, id, parent);
                if (newNode !== null) {
                    newNode.id = id;
                    newNode.parent = parent;
                }
            }
            if (node.children) {
                for (var i = 0; i < node.children.length; i++) {
                    traverseNodes(gltfRuntime, node.children[i], newNode, meshIncluded);
                }
            }
        };
        /**
        * do stuff after buffers, shaders are loaded (e.g. hook up materials, load animations, etc.)
        */
        var postLoad = function (gltfRuntime) {
            // Nodes
            var currentScene = gltfRuntime.currentScene;
            if (currentScene) {
                for (var i = 0; i < currentScene.nodes.length; i++) {
                    traverseNodes(gltfRuntime, currentScene.nodes[i], null);
                }
            }
            else {
                for (var thing in gltfRuntime.scenes) {
                    currentScene = gltfRuntime.scenes[thing];
                    for (var i = 0; i < currentScene.nodes.length; i++) {
                        traverseNodes(gltfRuntime, currentScene.nodes[i], null);
                    }
                }
            }
            // Set animations
            loadAnimations(gltfRuntime);
            for (var i = 0; i < gltfRuntime.scene.skeletons.length; i++) {
                var skeleton = gltfRuntime.scene.skeletons[i];
                gltfRuntime.scene.beginAnimation(skeleton, 0, Number.MAX_VALUE, true, 1.0);
            }
        };
        /**
        * onBind shaderrs callback to set uniforms and matrices
        */
        var onBindShaderMaterial = function (mesh, gltfRuntime, unTreatedUniforms, shaderMaterial, technique, material, onSuccess) {
            var materialValues = material.values || technique.parameters;
            for (var unif in unTreatedUniforms) {
                var uniform = unTreatedUniforms[unif];
                var type = uniform.type;
                if (type === GLTF1.EParameterType.FLOAT_MAT2 || type === GLTF1.EParameterType.FLOAT_MAT3 || type === GLTF1.EParameterType.FLOAT_MAT4) {
                    if (uniform.semantic && !uniform.source && !uniform.node) {
                        GLTF1.GLTFUtils.SetMatrix(gltfRuntime.scene, mesh, uniform, unif, shaderMaterial.getEffect());
                    }
                    else if (uniform.semantic && (uniform.source || uniform.node)) {
                        var source = gltfRuntime.scene.getNodeByName(uniform.source || uniform.node || "");
                        if (source === null) {
                            source = gltfRuntime.scene.getNodeByID(uniform.source || uniform.node || "");
                        }
                        if (source === null) {
                            continue;
                        }
                        GLTF1.GLTFUtils.SetMatrix(gltfRuntime.scene, source, uniform, unif, shaderMaterial.getEffect());
                    }
                }
                else {
                    var value = materialValues[technique.uniforms[unif]];
                    if (!value) {
                        continue;
                    }
                    if (type === GLTF1.EParameterType.SAMPLER_2D) {
                        var texture = gltfRuntime.textures[material.values ? value : uniform.value].babylonTexture;
                        if (texture === null || texture === undefined) {
                            continue;
                        }
                        shaderMaterial.getEffect().setTexture(unif, texture);
                    }
                    else {
                        GLTF1.GLTFUtils.SetUniform((shaderMaterial.getEffect()), unif, value, type);
                    }
                }
            }
            onSuccess(shaderMaterial);
        };
        /**
        * Prepare uniforms to send the only one time
        * Loads the appropriate textures
        */
        var prepareShaderMaterialUniforms = function (gltfRuntime, shaderMaterial, technique, material, unTreatedUniforms) {
            var materialValues = material.values || technique.parameters;
            var techniqueUniforms = technique.uniforms;
            /**
            * Prepare values here (not matrices)
            */
            for (var unif in unTreatedUniforms) {
                var uniform = unTreatedUniforms[unif];
                var type = uniform.type;
                var value = materialValues[techniqueUniforms[unif]];
                if (value === undefined) {
                    // In case the value is the same for all materials
                    value = uniform.value;
                }
                if (!value) {
                    continue;
                }
                var onLoadTexture = function (uniformName) {
                    return function (texture) {
                        if (uniform.value && uniformName) {
                            // Static uniform
                            shaderMaterial.setTexture(uniformName, texture);
                            delete unTreatedUniforms[uniformName];
                        }
                    };
                };
                // Texture (sampler2D)
                if (type === GLTF1.EParameterType.SAMPLER_2D) {
                    GLTF1.GLTFLoaderExtension.LoadTextureAsync(gltfRuntime, material.values ? value : uniform.value, onLoadTexture(unif), function () { return onLoadTexture(null); });
                }
                // Others
                else {
                    if (uniform.value && GLTF1.GLTFUtils.SetUniform(shaderMaterial, unif, material.values ? value : uniform.value, type)) {
                        // Static uniform
                        delete unTreatedUniforms[unif];
                    }
                }
            }
        };
        /**
        * Shader compilation failed
        */
        var onShaderCompileError = function (program, shaderMaterial, onError) {
            return function (effect, error) {
                shaderMaterial.dispose(true);
                onError("Cannot compile program named " + program.name + ". Error: " + error + ". Default material will be applied");
            };
        };
        /**
        * Shader compilation success
        */
        var onShaderCompileSuccess = function (gltfRuntime, shaderMaterial, technique, material, unTreatedUniforms, onSuccess) {
            return function (_) {
                prepareShaderMaterialUniforms(gltfRuntime, shaderMaterial, technique, material, unTreatedUniforms);
                shaderMaterial.onBind = function (mesh) {
                    onBindShaderMaterial(mesh, gltfRuntime, unTreatedUniforms, shaderMaterial, technique, material, onSuccess);
                };
            };
        };
        /**
        * Returns the appropriate uniform if already handled by babylon
        */
        var parseShaderUniforms = function (tokenizer, technique, unTreatedUniforms) {
            for (var unif in technique.uniforms) {
                var uniform = technique.uniforms[unif];
                var uniformParameter = technique.parameters[uniform];
                if (tokenizer.currentIdentifier === unif) {
                    if (uniformParameter.semantic && !uniformParameter.source && !uniformParameter.node) {
                        var transformIndex = glTFTransforms.indexOf(uniformParameter.semantic);
                        if (transformIndex !== -1) {
                            delete unTreatedUniforms[unif];
                            return babylonTransforms[transformIndex];
                        }
                    }
                }
            }
            return tokenizer.currentIdentifier;
        };
        /**
        * All shaders loaded. Create materials one by one
        */
        var importMaterials = function (gltfRuntime) {
            // Create materials
            for (var mat in gltfRuntime.materials) {
                GLTF1.GLTFLoaderExtension.LoadMaterialAsync(gltfRuntime, mat, function (material) { }, function () { });
            }
        };
        /**
        * Implementation of the base glTF spec
        */
        var GLTFLoaderBase = /** @class */ (function () {
            function GLTFLoaderBase() {
            }
            GLTFLoaderBase.CreateRuntime = function (parsedData, scene, rootUrl) {
                var gltfRuntime = {
                    extensions: {},
                    accessors: {},
                    buffers: {},
                    bufferViews: {},
                    meshes: {},
                    lights: {},
                    cameras: {},
                    nodes: {},
                    images: {},
                    textures: {},
                    shaders: {},
                    programs: {},
                    samplers: {},
                    techniques: {},
                    materials: {},
                    animations: {},
                    skins: {},
                    extensionsUsed: [],
                    scenes: {},
                    buffersCount: 0,
                    shaderscount: 0,
                    scene: scene,
                    rootUrl: rootUrl,
                    loadedBufferCount: 0,
                    loadedBufferViews: {},
                    loadedShaderCount: 0,
                    importOnlyMeshes: false,
                    dummyNodes: []
                };
                // Parse
                if (parsedData.extensions) {
                    parseObject(parsedData.extensions, "extensions", gltfRuntime);
                }
                if (parsedData.extensionsUsed) {
                    parseObject(parsedData.extensionsUsed, "extensionsUsed", gltfRuntime);
                }
                if (parsedData.buffers) {
                    parseBuffers(parsedData.buffers, gltfRuntime);
                }
                if (parsedData.bufferViews) {
                    parseObject(parsedData.bufferViews, "bufferViews", gltfRuntime);
                }
                if (parsedData.accessors) {
                    parseObject(parsedData.accessors, "accessors", gltfRuntime);
                }
                if (parsedData.meshes) {
                    parseObject(parsedData.meshes, "meshes", gltfRuntime);
                }
                if (parsedData.lights) {
                    parseObject(parsedData.lights, "lights", gltfRuntime);
                }
                if (parsedData.cameras) {
                    parseObject(parsedData.cameras, "cameras", gltfRuntime);
                }
                if (parsedData.nodes) {
                    parseObject(parsedData.nodes, "nodes", gltfRuntime);
                }
                if (parsedData.images) {
                    parseObject(parsedData.images, "images", gltfRuntime);
                }
                if (parsedData.textures) {
                    parseObject(parsedData.textures, "textures", gltfRuntime);
                }
                if (parsedData.shaders) {
                    parseShaders(parsedData.shaders, gltfRuntime);
                }
                if (parsedData.programs) {
                    parseObject(parsedData.programs, "programs", gltfRuntime);
                }
                if (parsedData.samplers) {
                    parseObject(parsedData.samplers, "samplers", gltfRuntime);
                }
                if (parsedData.techniques) {
                    parseObject(parsedData.techniques, "techniques", gltfRuntime);
                }
                if (parsedData.materials) {
                    parseObject(parsedData.materials, "materials", gltfRuntime);
                }
                if (parsedData.animations) {
                    parseObject(parsedData.animations, "animations", gltfRuntime);
                }
                if (parsedData.skins) {
                    parseObject(parsedData.skins, "skins", gltfRuntime);
                }
                if (parsedData.scenes) {
                    gltfRuntime.scenes = parsedData.scenes;
                }
                if (parsedData.scene && parsedData.scenes) {
                    gltfRuntime.currentScene = parsedData.scenes[parsedData.scene];
                }
                return gltfRuntime;
            };
            GLTFLoaderBase.LoadBufferAsync = function (gltfRuntime, id, onSuccess, onError, onProgress) {
                var buffer = gltfRuntime.buffers[id];
                if (BABYLON.Tools.IsBase64(buffer.uri)) {
                    setTimeout(function () { return onSuccess(new Uint8Array(BABYLON.Tools.DecodeBase64(buffer.uri))); });
                }
                else {
                    BABYLON.Tools.LoadFile(gltfRuntime.rootUrl + buffer.uri, function (data) { return onSuccess(new Uint8Array(data)); }, onProgress, undefined, true, function (request) {
                        if (request) {
                            onError(request.status + " " + request.statusText);
                        }
                    });
                }
            };
            GLTFLoaderBase.LoadTextureBufferAsync = function (gltfRuntime, id, onSuccess, onError) {
                var texture = gltfRuntime.textures[id];
                if (!texture || !texture.source) {
                    onError("");
                    return;
                }
                if (texture.babylonTexture) {
                    onSuccess(null);
                    return;
                }
                var source = gltfRuntime.images[texture.source];
                if (BABYLON.Tools.IsBase64(source.uri)) {
                    setTimeout(function () { return onSuccess(new Uint8Array(BABYLON.Tools.DecodeBase64(source.uri))); });
                }
                else {
                    BABYLON.Tools.LoadFile(gltfRuntime.rootUrl + source.uri, function (data) { return onSuccess(new Uint8Array(data)); }, undefined, undefined, true, function (request) {
                        if (request) {
                            onError(request.status + " " + request.statusText);
                        }
                    });
                }
            };
            GLTFLoaderBase.CreateTextureAsync = function (gltfRuntime, id, buffer, onSuccess, onError) {
                var texture = gltfRuntime.textures[id];
                if (texture.babylonTexture) {
                    onSuccess(texture.babylonTexture);
                    return;
                }
                var sampler = gltfRuntime.samplers[texture.sampler];
                var createMipMaps = (sampler.minFilter === GLTF1.ETextureFilterType.NEAREST_MIPMAP_NEAREST) ||
                    (sampler.minFilter === GLTF1.ETextureFilterType.NEAREST_MIPMAP_LINEAR) ||
                    (sampler.minFilter === GLTF1.ETextureFilterType.LINEAR_MIPMAP_NEAREST) ||
                    (sampler.minFilter === GLTF1.ETextureFilterType.LINEAR_MIPMAP_LINEAR);
                var samplingMode = BABYLON.Texture.BILINEAR_SAMPLINGMODE;
                var blob = new Blob([buffer]);
                var blobURL = URL.createObjectURL(blob);
                var revokeBlobURL = function () { return URL.revokeObjectURL(blobURL); };
                var newTexture = new BABYLON.Texture(blobURL, gltfRuntime.scene, !createMipMaps, true, samplingMode, revokeBlobURL, revokeBlobURL);
                if (sampler.wrapS !== undefined) {
                    newTexture.wrapU = GLTF1.GLTFUtils.GetWrapMode(sampler.wrapS);
                }
                if (sampler.wrapT !== undefined) {
                    newTexture.wrapV = GLTF1.GLTFUtils.GetWrapMode(sampler.wrapT);
                }
                newTexture.name = id;
                texture.babylonTexture = newTexture;
                onSuccess(newTexture);
            };
            GLTFLoaderBase.LoadShaderStringAsync = function (gltfRuntime, id, onSuccess, onError) {
                var shader = gltfRuntime.shaders[id];
                if (BABYLON.Tools.IsBase64(shader.uri)) {
                    var shaderString = atob(shader.uri.split(",")[1]);
                    if (onSuccess) {
                        onSuccess(shaderString);
                    }
                }
                else {
                    BABYLON.Tools.LoadFile(gltfRuntime.rootUrl + shader.uri, onSuccess, undefined, undefined, false, function (request) {
                        if (request && onError) {
                            onError(request.status + " " + request.statusText);
                        }
                    });
                }
            };
            GLTFLoaderBase.LoadMaterialAsync = function (gltfRuntime, id, onSuccess, onError) {
                var material = gltfRuntime.materials[id];
                if (!material.technique) {
                    if (onError) {
                        onError("No technique found.");
                    }
                    return;
                }
                var technique = gltfRuntime.techniques[material.technique];
                if (!technique) {
                    var defaultMaterial = new BABYLON.StandardMaterial(id, gltfRuntime.scene);
                    defaultMaterial.diffuseColor = new BABYLON.Color3(0.5, 0.5, 0.5);
                    defaultMaterial.sideOrientation = BABYLON.Material.CounterClockWiseSideOrientation;
                    onSuccess(defaultMaterial);
                    return;
                }
                var program = gltfRuntime.programs[technique.program];
                var states = technique.states;
                var vertexShader = BABYLON.Effect.ShadersStore[program.vertexShader + "VertexShader"];
                var pixelShader = BABYLON.Effect.ShadersStore[program.fragmentShader + "PixelShader"];
                var newVertexShader = "";
                var newPixelShader = "";
                var vertexTokenizer = new Tokenizer(vertexShader);
                var pixelTokenizer = new Tokenizer(pixelShader);
                var unTreatedUniforms = {};
                var uniforms = [];
                var attributes = [];
                var samplers = [];
                // Fill uniform, sampler2D and attributes
                for (var unif in technique.uniforms) {
                    var uniform = technique.uniforms[unif];
                    var uniformParameter = technique.parameters[uniform];
                    unTreatedUniforms[unif] = uniformParameter;
                    if (uniformParameter.semantic && !uniformParameter.node && !uniformParameter.source) {
                        var transformIndex = glTFTransforms.indexOf(uniformParameter.semantic);
                        if (transformIndex !== -1) {
                            uniforms.push(babylonTransforms[transformIndex]);
                            delete unTreatedUniforms[unif];
                        }
                        else {
                            uniforms.push(unif);
                        }
                    }
                    else if (uniformParameter.type === GLTF1.EParameterType.SAMPLER_2D) {
                        samplers.push(unif);
                    }
                    else {
                        uniforms.push(unif);
                    }
                }
                for (var attr in technique.attributes) {
                    var attribute = technique.attributes[attr];
                    var attributeParameter = technique.parameters[attribute];
                    if (attributeParameter.semantic) {
                        attributes.push(getAttribute(attributeParameter));
                    }
                }
                // Configure vertex shader
                while (!vertexTokenizer.isEnd() && vertexTokenizer.getNextToken()) {
                    var tokenType = vertexTokenizer.currentToken;
                    if (tokenType !== ETokenType.IDENTIFIER) {
                        newVertexShader += vertexTokenizer.currentString;
                        continue;
                    }
                    var foundAttribute = false;
                    for (var attr in technique.attributes) {
                        var attribute = technique.attributes[attr];
                        var attributeParameter = technique.parameters[attribute];
                        if (vertexTokenizer.currentIdentifier === attr && attributeParameter.semantic) {
                            newVertexShader += getAttribute(attributeParameter);
                            foundAttribute = true;
                            break;
                        }
                    }
                    if (foundAttribute) {
                        continue;
                    }
                    newVertexShader += parseShaderUniforms(vertexTokenizer, technique, unTreatedUniforms);
                }
                // Configure pixel shader
                while (!pixelTokenizer.isEnd() && pixelTokenizer.getNextToken()) {
                    var tokenType = pixelTokenizer.currentToken;
                    if (tokenType !== ETokenType.IDENTIFIER) {
                        newPixelShader += pixelTokenizer.currentString;
                        continue;
                    }
                    newPixelShader += parseShaderUniforms(pixelTokenizer, technique, unTreatedUniforms);
                }
                // Create shader material
                var shaderPath = {
                    vertex: program.vertexShader + id,
                    fragment: program.fragmentShader + id
                };
                var options = {
                    attributes: attributes,
                    uniforms: uniforms,
                    samplers: samplers,
                    needAlphaBlending: states && states.enable && states.enable.indexOf(3042) !== -1
                };
                BABYLON.Effect.ShadersStore[program.vertexShader + id + "VertexShader"] = newVertexShader;
                BABYLON.Effect.ShadersStore[program.fragmentShader + id + "PixelShader"] = newPixelShader;
                var shaderMaterial = new BABYLON.ShaderMaterial(id, gltfRuntime.scene, shaderPath, options);
                shaderMaterial.onError = onShaderCompileError(program, shaderMaterial, onError);
                shaderMaterial.onCompiled = onShaderCompileSuccess(gltfRuntime, shaderMaterial, technique, material, unTreatedUniforms, onSuccess);
                shaderMaterial.sideOrientation = BABYLON.Material.CounterClockWiseSideOrientation;
                if (states && states.functions) {
                    var functions = states.functions;
                    if (functions.cullFace && functions.cullFace[0] !== GLTF1.ECullingType.BACK) {
                        shaderMaterial.backFaceCulling = false;
                    }
                    var blendFunc = functions.blendFuncSeparate;
                    if (blendFunc) {
                        if (blendFunc[0] === GLTF1.EBlendingFunction.SRC_ALPHA && blendFunc[1] === GLTF1.EBlendingFunction.ONE_MINUS_SRC_ALPHA && blendFunc[2] === GLTF1.EBlendingFunction.ONE && blendFunc[3] === GLTF1.EBlendingFunction.ONE) {
                            shaderMaterial.alphaMode = BABYLON.Engine.ALPHA_COMBINE;
                        }
                        else if (blendFunc[0] === GLTF1.EBlendingFunction.ONE && blendFunc[1] === GLTF1.EBlendingFunction.ONE && blendFunc[2] === GLTF1.EBlendingFunction.ZERO && blendFunc[3] === GLTF1.EBlendingFunction.ONE) {
                            shaderMaterial.alphaMode = BABYLON.Engine.ALPHA_ONEONE;
                        }
                        else if (blendFunc[0] === GLTF1.EBlendingFunction.SRC_ALPHA && blendFunc[1] === GLTF1.EBlendingFunction.ONE && blendFunc[2] === GLTF1.EBlendingFunction.ZERO && blendFunc[3] === GLTF1.EBlendingFunction.ONE) {
                            shaderMaterial.alphaMode = BABYLON.Engine.ALPHA_ADD;
                        }
                        else if (blendFunc[0] === GLTF1.EBlendingFunction.ZERO && blendFunc[1] === GLTF1.EBlendingFunction.ONE_MINUS_SRC_COLOR && blendFunc[2] === GLTF1.EBlendingFunction.ONE && blendFunc[3] === GLTF1.EBlendingFunction.ONE) {
                            shaderMaterial.alphaMode = BABYLON.Engine.ALPHA_SUBTRACT;
                        }
                        else if (blendFunc[0] === GLTF1.EBlendingFunction.DST_COLOR && blendFunc[1] === GLTF1.EBlendingFunction.ZERO && blendFunc[2] === GLTF1.EBlendingFunction.ONE && blendFunc[3] === GLTF1.EBlendingFunction.ONE) {
                            shaderMaterial.alphaMode = BABYLON.Engine.ALPHA_MULTIPLY;
                        }
                        else if (blendFunc[0] === GLTF1.EBlendingFunction.SRC_ALPHA && blendFunc[1] === GLTF1.EBlendingFunction.ONE_MINUS_SRC_COLOR && blendFunc[2] === GLTF1.EBlendingFunction.ONE && blendFunc[3] === GLTF1.EBlendingFunction.ONE) {
                            shaderMaterial.alphaMode = BABYLON.Engine.ALPHA_MAXIMIZED;
                        }
                    }
                }
            };
            return GLTFLoaderBase;
        }());
        GLTF1.GLTFLoaderBase = GLTFLoaderBase;
        /**
        * glTF V1 Loader
        */
        var GLTFLoader = /** @class */ (function () {
            function GLTFLoader() {
                // #region Stubs for IGLTFLoader interface
                this.coordinateSystemMode = BABYLON.GLTFLoaderCoordinateSystemMode.AUTO;
                this.animationStartMode = BABYLON.GLTFLoaderAnimationStartMode.FIRST;
                this.compileMaterials = false;
                this.useClipPlane = false;
                this.compileShadowGenerators = false;
                this.onDisposeObservable = new BABYLON.Observable();
                this.onMeshLoadedObservable = new BABYLON.Observable();
                this.onTextureLoadedObservable = new BABYLON.Observable();
                this.onMaterialLoadedObservable = new BABYLON.Observable();
                this.onCompleteObservable = new BABYLON.Observable();
                this.onExtensionLoadedObservable = new BABYLON.Observable();
                /**
                * State of the loader
                */
                this.state = null;
            }
            GLTFLoader.RegisterExtension = function (extension) {
                if (GLTFLoader.Extensions[extension.name]) {
                    BABYLON.Tools.Error("Tool with the same name \"" + extension.name + "\" already exists");
                    return;
                }
                GLTFLoader.Extensions[extension.name] = extension;
            };
            GLTFLoader.prototype.dispose = function () { };
            // #endregion
            GLTFLoader.prototype._importMeshAsync = function (meshesNames, scene, data, rootUrl, onSuccess, onProgress, onError) {
                var _this = this;
                scene.useRightHandedSystem = true;
                GLTF1.GLTFLoaderExtension.LoadRuntimeAsync(scene, data, rootUrl, function (gltfRuntime) {
                    gltfRuntime.importOnlyMeshes = true;
                    if (meshesNames === "") {
                        gltfRuntime.importMeshesNames = [];
                    }
                    else if (typeof meshesNames === "string") {
                        gltfRuntime.importMeshesNames = [meshesNames];
                    }
                    else if (meshesNames && !(meshesNames instanceof Array)) {
                        gltfRuntime.importMeshesNames = [meshesNames];
                    }
                    else {
                        gltfRuntime.importMeshesNames = [];
                        BABYLON.Tools.Warn("Argument meshesNames must be of type string or string[]");
                    }
                    // Create nodes
                    _this._createNodes(gltfRuntime);
                    var meshes = new Array();
                    var skeletons = new Array();
                    // Fill arrays of meshes and skeletons
                    for (var nde in gltfRuntime.nodes) {
                        var node = gltfRuntime.nodes[nde];
                        if (node.babylonNode instanceof BABYLON.AbstractMesh) {
                            meshes.push(node.babylonNode);
                        }
                    }
                    for (var skl in gltfRuntime.skins) {
                        var skin = gltfRuntime.skins[skl];
                        if (skin.babylonSkeleton instanceof BABYLON.Skeleton) {
                            skeletons.push(skin.babylonSkeleton);
                        }
                    }
                    // Load buffers, shaders, materials, etc.
                    _this._loadBuffersAsync(gltfRuntime, function () {
                        _this._loadShadersAsync(gltfRuntime, function () {
                            importMaterials(gltfRuntime);
                            postLoad(gltfRuntime);
                            if (!BABYLON.GLTFFileLoader.IncrementalLoading && onSuccess) {
                                onSuccess(meshes, skeletons);
                            }
                        });
                    }, onProgress);
                    if (BABYLON.GLTFFileLoader.IncrementalLoading && onSuccess) {
                        onSuccess(meshes, skeletons);
                    }
                }, onError);
                return true;
            };
            /**
            * Imports one or more meshes from a loaded gltf file and adds them to the scene
            * @param meshesNames a string or array of strings of the mesh names that should be loaded from the file
            * @param scene the scene the meshes should be added to
            * @param data gltf data containing information of the meshes in a loaded file
            * @param rootUrl root url to load from
            * @param onProgress event that fires when loading progress has occured
            * @returns a promise containg the loaded meshes, particles, skeletons and animations
            */
            GLTFLoader.prototype.importMeshAsync = function (meshesNames, scene, data, rootUrl, onProgress) {
                var _this = this;
                return new Promise(function (resolve, reject) {
                    _this._importMeshAsync(meshesNames, scene, data, rootUrl, function (meshes, skeletons) {
                        resolve({
                            meshes: meshes,
                            particleSystems: [],
                            skeletons: skeletons,
                            animationGroups: []
                        });
                    }, onProgress, function (message) {
                        reject(new Error(message));
                    });
                });
            };
            GLTFLoader.prototype._loadAsync = function (scene, data, rootUrl, onSuccess, onProgress, onError) {
                var _this = this;
                scene.useRightHandedSystem = true;
                GLTF1.GLTFLoaderExtension.LoadRuntimeAsync(scene, data, rootUrl, function (gltfRuntime) {
                    // Load runtime extensios
                    GLTF1.GLTFLoaderExtension.LoadRuntimeExtensionsAsync(gltfRuntime, function () {
                        // Create nodes
                        _this._createNodes(gltfRuntime);
                        // Load buffers, shaders, materials, etc.
                        _this._loadBuffersAsync(gltfRuntime, function () {
                            _this._loadShadersAsync(gltfRuntime, function () {
                                importMaterials(gltfRuntime);
                                postLoad(gltfRuntime);
                                if (!BABYLON.GLTFFileLoader.IncrementalLoading) {
                                    onSuccess();
                                }
                            });
                        });
                        if (BABYLON.GLTFFileLoader.IncrementalLoading) {
                            onSuccess();
                        }
                    }, onError);
                }, onError);
            };
            /**
            * Imports all objects from a loaded gltf file and adds them to the scene
            * @param scene the scene the objects should be added to
            * @param data gltf data containing information of the meshes in a loaded file
            * @param rootUrl root url to load from
            * @param onProgress event that fires when loading progress has occured
            * @returns a promise which completes when objects have been loaded to the scene
            */
            GLTFLoader.prototype.loadAsync = function (scene, data, rootUrl, onProgress) {
                var _this = this;
                return new Promise(function (resolve, reject) {
                    _this._loadAsync(scene, data, rootUrl, function () {
                        resolve();
                    }, onProgress, function (message) {
                        reject(new Error(message));
                    });
                });
            };
            GLTFLoader.prototype._loadShadersAsync = function (gltfRuntime, onload) {
                var hasShaders = false;
                var processShader = function (sha, shader) {
                    GLTF1.GLTFLoaderExtension.LoadShaderStringAsync(gltfRuntime, sha, function (shaderString) {
                        if (shaderString instanceof ArrayBuffer) {
                            return;
                        }
                        gltfRuntime.loadedShaderCount++;
                        if (shaderString) {
                            BABYLON.Effect.ShadersStore[sha + (shader.type === GLTF1.EShaderType.VERTEX ? "VertexShader" : "PixelShader")] = shaderString;
                        }
                        if (gltfRuntime.loadedShaderCount === gltfRuntime.shaderscount) {
                            onload();
                        }
                    }, function () {
                        BABYLON.Tools.Error("Error when loading shader program named " + sha + " located at " + shader.uri);
                    });
                };
                for (var sha in gltfRuntime.shaders) {
                    hasShaders = true;
                    var shader = gltfRuntime.shaders[sha];
                    if (shader) {
                        processShader.bind(this, sha, shader)();
                    }
                    else {
                        BABYLON.Tools.Error("No shader named: " + sha);
                    }
                }
                if (!hasShaders) {
                    onload();
                }
            };
            ;
            GLTFLoader.prototype._loadBuffersAsync = function (gltfRuntime, onLoad, onProgress) {
                var hasBuffers = false;
                var processBuffer = function (buf, buffer) {
                    GLTF1.GLTFLoaderExtension.LoadBufferAsync(gltfRuntime, buf, function (bufferView) {
                        gltfRuntime.loadedBufferCount++;
                        if (bufferView) {
                            if (bufferView.byteLength != gltfRuntime.buffers[buf].byteLength) {
                                BABYLON.Tools.Error("Buffer named " + buf + " is length " + bufferView.byteLength + ". Expected: " + buffer.byteLength); // Improve error message
                            }
                            gltfRuntime.loadedBufferViews[buf] = bufferView;
                        }
                        if (gltfRuntime.loadedBufferCount === gltfRuntime.buffersCount) {
                            onLoad();
                        }
                    }, function () {
                        BABYLON.Tools.Error("Error when loading buffer named " + buf + " located at " + buffer.uri);
                    });
                };
                for (var buf in gltfRuntime.buffers) {
                    hasBuffers = true;
                    var buffer = gltfRuntime.buffers[buf];
                    if (buffer) {
                        processBuffer.bind(this, buf, buffer)();
                    }
                    else {
                        BABYLON.Tools.Error("No buffer named: " + buf);
                    }
                }
                if (!hasBuffers) {
                    onLoad();
                }
            };
            GLTFLoader.prototype._createNodes = function (gltfRuntime) {
                var currentScene = gltfRuntime.currentScene;
                if (currentScene) {
                    // Only one scene even if multiple scenes are defined
                    for (var i = 0; i < currentScene.nodes.length; i++) {
                        traverseNodes(gltfRuntime, currentScene.nodes[i], null);
                    }
                }
                else {
                    // Load all scenes
                    for (var thing in gltfRuntime.scenes) {
                        currentScene = gltfRuntime.scenes[thing];
                        for (var i = 0; i < currentScene.nodes.length; i++) {
                            traverseNodes(gltfRuntime, currentScene.nodes[i], null);
                        }
                    }
                }
            };
            GLTFLoader.Extensions = {};
            return GLTFLoader;
        }());
        GLTF1.GLTFLoader = GLTFLoader;
        ;
        BABYLON.GLTFFileLoader.CreateGLTFLoaderV1 = function () { return new GLTFLoader(); };
    })(GLTF1 = BABYLON.GLTF1 || (BABYLON.GLTF1 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFLoader.js.map


var BABYLON;
(function (BABYLON) {
    var GLTF1;
    (function (GLTF1) {
        /**
        * Utils functions for GLTF
        */
        var GLTFUtils = /** @class */ (function () {
            function GLTFUtils() {
            }
            /**
             * Sets the given "parameter" matrix
             * @param scene: the {BABYLON.Scene} object
             * @param source: the source node where to pick the matrix
             * @param parameter: the GLTF technique parameter
             * @param uniformName: the name of the shader's uniform
             * @param shaderMaterial: the shader material
             */
            GLTFUtils.SetMatrix = function (scene, source, parameter, uniformName, shaderMaterial) {
                var mat = null;
                if (parameter.semantic === "MODEL") {
                    mat = source.getWorldMatrix();
                }
                else if (parameter.semantic === "PROJECTION") {
                    mat = scene.getProjectionMatrix();
                }
                else if (parameter.semantic === "VIEW") {
                    mat = scene.getViewMatrix();
                }
                else if (parameter.semantic === "MODELVIEWINVERSETRANSPOSE") {
                    mat = BABYLON.Matrix.Transpose(source.getWorldMatrix().multiply(scene.getViewMatrix()).invert());
                }
                else if (parameter.semantic === "MODELVIEW") {
                    mat = source.getWorldMatrix().multiply(scene.getViewMatrix());
                }
                else if (parameter.semantic === "MODELVIEWPROJECTION") {
                    mat = source.getWorldMatrix().multiply(scene.getTransformMatrix());
                }
                else if (parameter.semantic === "MODELINVERSE") {
                    mat = source.getWorldMatrix().invert();
                }
                else if (parameter.semantic === "VIEWINVERSE") {
                    mat = scene.getViewMatrix().invert();
                }
                else if (parameter.semantic === "PROJECTIONINVERSE") {
                    mat = scene.getProjectionMatrix().invert();
                }
                else if (parameter.semantic === "MODELVIEWINVERSE") {
                    mat = source.getWorldMatrix().multiply(scene.getViewMatrix()).invert();
                }
                else if (parameter.semantic === "MODELVIEWPROJECTIONINVERSE") {
                    mat = source.getWorldMatrix().multiply(scene.getTransformMatrix()).invert();
                }
                else if (parameter.semantic === "MODELINVERSETRANSPOSE") {
                    mat = BABYLON.Matrix.Transpose(source.getWorldMatrix().invert());
                }
                else {
                    debugger;
                }
                if (mat) {
                    switch (parameter.type) {
                        case GLTF1.EParameterType.FLOAT_MAT2:
                            shaderMaterial.setMatrix2x2(uniformName, BABYLON.Matrix.GetAsMatrix2x2(mat));
                            break;
                        case GLTF1.EParameterType.FLOAT_MAT3:
                            shaderMaterial.setMatrix3x3(uniformName, BABYLON.Matrix.GetAsMatrix3x3(mat));
                            break;
                        case GLTF1.EParameterType.FLOAT_MAT4:
                            shaderMaterial.setMatrix(uniformName, mat);
                            break;
                        default: break;
                    }
                }
            };
            /**
             * Sets the given "parameter" matrix
             * @param shaderMaterial: the shader material
             * @param uniform: the name of the shader's uniform
             * @param value: the value of the uniform
             * @param type: the uniform's type (EParameterType FLOAT, VEC2, VEC3 or VEC4)
             */
            GLTFUtils.SetUniform = function (shaderMaterial, uniform, value, type) {
                switch (type) {
                    case GLTF1.EParameterType.FLOAT:
                        shaderMaterial.setFloat(uniform, value);
                        return true;
                    case GLTF1.EParameterType.FLOAT_VEC2:
                        shaderMaterial.setVector2(uniform, BABYLON.Vector2.FromArray(value));
                        return true;
                    case GLTF1.EParameterType.FLOAT_VEC3:
                        shaderMaterial.setVector3(uniform, BABYLON.Vector3.FromArray(value));
                        return true;
                    case GLTF1.EParameterType.FLOAT_VEC4:
                        shaderMaterial.setVector4(uniform, BABYLON.Vector4.FromArray(value));
                        return true;
                    default: return false;
                }
            };
            /**
            * Returns the wrap mode of the texture
            * @param mode: the mode value
            */
            GLTFUtils.GetWrapMode = function (mode) {
                switch (mode) {
                    case GLTF1.ETextureWrapMode.CLAMP_TO_EDGE: return BABYLON.Texture.CLAMP_ADDRESSMODE;
                    case GLTF1.ETextureWrapMode.MIRRORED_REPEAT: return BABYLON.Texture.MIRROR_ADDRESSMODE;
                    case GLTF1.ETextureWrapMode.REPEAT: return BABYLON.Texture.WRAP_ADDRESSMODE;
                    default: return BABYLON.Texture.WRAP_ADDRESSMODE;
                }
            };
            /**
             * Returns the byte stride giving an accessor
             * @param accessor: the GLTF accessor objet
             */
            GLTFUtils.GetByteStrideFromType = function (accessor) {
                // Needs this function since "byteStride" isn't requiered in glTF format
                var type = accessor.type;
                switch (type) {
                    case "VEC2": return 2;
                    case "VEC3": return 3;
                    case "VEC4": return 4;
                    case "MAT2": return 4;
                    case "MAT3": return 9;
                    case "MAT4": return 16;
                    default: return 1;
                }
            };
            /**
             * Returns the texture filter mode giving a mode value
             * @param mode: the filter mode value
             */
            GLTFUtils.GetTextureFilterMode = function (mode) {
                switch (mode) {
                    case GLTF1.ETextureFilterType.LINEAR:
                    case GLTF1.ETextureFilterType.LINEAR_MIPMAP_NEAREST:
                    case GLTF1.ETextureFilterType.LINEAR_MIPMAP_LINEAR: return BABYLON.Texture.TRILINEAR_SAMPLINGMODE;
                    case GLTF1.ETextureFilterType.NEAREST:
                    case GLTF1.ETextureFilterType.NEAREST_MIPMAP_NEAREST: return BABYLON.Texture.NEAREST_SAMPLINGMODE;
                    default: return BABYLON.Texture.BILINEAR_SAMPLINGMODE;
                }
            };
            GLTFUtils.GetBufferFromBufferView = function (gltfRuntime, bufferView, byteOffset, byteLength, componentType) {
                var byteOffset = bufferView.byteOffset + byteOffset;
                var loadedBufferView = gltfRuntime.loadedBufferViews[bufferView.buffer];
                if (byteOffset + byteLength > loadedBufferView.byteLength) {
                    throw new Error("Buffer access is out of range");
                }
                var buffer = loadedBufferView.buffer;
                byteOffset += loadedBufferView.byteOffset;
                switch (componentType) {
                    case GLTF1.EComponentType.BYTE: return new Int8Array(buffer, byteOffset, byteLength);
                    case GLTF1.EComponentType.UNSIGNED_BYTE: return new Uint8Array(buffer, byteOffset, byteLength);
                    case GLTF1.EComponentType.SHORT: return new Int16Array(buffer, byteOffset, byteLength);
                    case GLTF1.EComponentType.UNSIGNED_SHORT: return new Uint16Array(buffer, byteOffset, byteLength);
                    default: return new Float32Array(buffer, byteOffset, byteLength);
                }
            };
            /**
             * Returns a buffer from its accessor
             * @param gltfRuntime: the GLTF runtime
             * @param accessor: the GLTF accessor
             */
            GLTFUtils.GetBufferFromAccessor = function (gltfRuntime, accessor) {
                var bufferView = gltfRuntime.bufferViews[accessor.bufferView];
                var byteLength = accessor.count * GLTFUtils.GetByteStrideFromType(accessor);
                return GLTFUtils.GetBufferFromBufferView(gltfRuntime, bufferView, accessor.byteOffset, byteLength, accessor.componentType);
            };
            /**
             * Decodes a buffer view into a string
             * @param view: the buffer view
             */
            GLTFUtils.DecodeBufferToText = function (view) {
                var result = "";
                var length = view.byteLength;
                for (var i = 0; i < length; ++i) {
                    result += String.fromCharCode(view[i]);
                }
                return result;
            };
            /**
             * Returns the default material of gltf. Related to
             * https://github.com/KhronosGroup/glTF/tree/master/specification/1.0#appendix-a-default-material
             * @param scene: the Babylon.js scene
             */
            GLTFUtils.GetDefaultMaterial = function (scene) {
                if (!GLTFUtils._DefaultMaterial) {
                    BABYLON.Effect.ShadersStore["GLTFDefaultMaterialVertexShader"] = [
                        "precision highp float;",
                        "",
                        "uniform mat4 worldView;",
                        "uniform mat4 projection;",
                        "",
                        "attribute vec3 position;",
                        "",
                        "void main(void)",
                        "{",
                        "    gl_Position = projection * worldView * vec4(position, 1.0);",
                        "}"
                    ].join("\n");
                    BABYLON.Effect.ShadersStore["GLTFDefaultMaterialPixelShader"] = [
                        "precision highp float;",
                        "",
                        "uniform vec4 u_emission;",
                        "",
                        "void main(void)",
                        "{",
                        "    gl_FragColor = u_emission;",
                        "}"
                    ].join("\n");
                    var shaderPath = {
                        vertex: "GLTFDefaultMaterial",
                        fragment: "GLTFDefaultMaterial"
                    };
                    var options = {
                        attributes: ["position"],
                        uniforms: ["worldView", "projection", "u_emission"],
                        samplers: new Array(),
                        needAlphaBlending: false
                    };
                    GLTFUtils._DefaultMaterial = new BABYLON.ShaderMaterial("GLTFDefaultMaterial", scene, shaderPath, options);
                    GLTFUtils._DefaultMaterial.setColor4("u_emission", new BABYLON.Color4(0.5, 0.5, 0.5, 1.0));
                }
                return GLTFUtils._DefaultMaterial;
            };
            // The GLTF default material
            GLTFUtils._DefaultMaterial = null;
            return GLTFUtils;
        }());
        GLTF1.GLTFUtils = GLTFUtils;
    })(GLTF1 = BABYLON.GLTF1 || (BABYLON.GLTF1 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFLoaderUtils.js.map


var BABYLON;
(function (BABYLON) {
    var GLTF1;
    (function (GLTF1) {
        var GLTFLoaderExtension = /** @class */ (function () {
            function GLTFLoaderExtension(name) {
                this._name = name;
            }
            Object.defineProperty(GLTFLoaderExtension.prototype, "name", {
                get: function () {
                    return this._name;
                },
                enumerable: true,
                configurable: true
            });
            /**
            * Defines an override for loading the runtime
            * Return true to stop further extensions from loading the runtime
            */
            GLTFLoaderExtension.prototype.loadRuntimeAsync = function (scene, data, rootUrl, onSuccess, onError) {
                return false;
            };
            /**
             * Defines an onverride for creating gltf runtime
             * Return true to stop further extensions from creating the runtime
             */
            GLTFLoaderExtension.prototype.loadRuntimeExtensionsAsync = function (gltfRuntime, onSuccess, onError) {
                return false;
            };
            /**
            * Defines an override for loading buffers
            * Return true to stop further extensions from loading this buffer
            */
            GLTFLoaderExtension.prototype.loadBufferAsync = function (gltfRuntime, id, onSuccess, onError, onProgress) {
                return false;
            };
            /**
            * Defines an override for loading texture buffers
            * Return true to stop further extensions from loading this texture data
            */
            GLTFLoaderExtension.prototype.loadTextureBufferAsync = function (gltfRuntime, id, onSuccess, onError) {
                return false;
            };
            /**
            * Defines an override for creating textures
            * Return true to stop further extensions from loading this texture
            */
            GLTFLoaderExtension.prototype.createTextureAsync = function (gltfRuntime, id, buffer, onSuccess, onError) {
                return false;
            };
            /**
            * Defines an override for loading shader strings
            * Return true to stop further extensions from loading this shader data
            */
            GLTFLoaderExtension.prototype.loadShaderStringAsync = function (gltfRuntime, id, onSuccess, onError) {
                return false;
            };
            /**
            * Defines an override for loading materials
            * Return true to stop further extensions from loading this material
            */
            GLTFLoaderExtension.prototype.loadMaterialAsync = function (gltfRuntime, id, onSuccess, onError) {
                return false;
            };
            // ---------
            // Utilities
            // ---------
            GLTFLoaderExtension.LoadRuntimeAsync = function (scene, data, rootUrl, onSuccess, onError) {
                GLTFLoaderExtension.ApplyExtensions(function (loaderExtension) {
                    return loaderExtension.loadRuntimeAsync(scene, data, rootUrl, onSuccess, onError);
                }, function () {
                    setTimeout(function () {
                        if (!onSuccess) {
                            return;
                        }
                        onSuccess(GLTF1.GLTFLoaderBase.CreateRuntime(data.json, scene, rootUrl));
                    });
                });
            };
            GLTFLoaderExtension.LoadRuntimeExtensionsAsync = function (gltfRuntime, onSuccess, onError) {
                GLTFLoaderExtension.ApplyExtensions(function (loaderExtension) {
                    return loaderExtension.loadRuntimeExtensionsAsync(gltfRuntime, onSuccess, onError);
                }, function () {
                    setTimeout(function () {
                        onSuccess();
                    });
                });
            };
            GLTFLoaderExtension.LoadBufferAsync = function (gltfRuntime, id, onSuccess, onError, onProgress) {
                GLTFLoaderExtension.ApplyExtensions(function (loaderExtension) {
                    return loaderExtension.loadBufferAsync(gltfRuntime, id, onSuccess, onError, onProgress);
                }, function () {
                    GLTF1.GLTFLoaderBase.LoadBufferAsync(gltfRuntime, id, onSuccess, onError, onProgress);
                });
            };
            GLTFLoaderExtension.LoadTextureAsync = function (gltfRuntime, id, onSuccess, onError) {
                GLTFLoaderExtension.LoadTextureBufferAsync(gltfRuntime, id, function (buffer) {
                    if (buffer) {
                        GLTFLoaderExtension.CreateTextureAsync(gltfRuntime, id, buffer, onSuccess, onError);
                    }
                }, onError);
            };
            GLTFLoaderExtension.LoadShaderStringAsync = function (gltfRuntime, id, onSuccess, onError) {
                GLTFLoaderExtension.ApplyExtensions(function (loaderExtension) {
                    return loaderExtension.loadShaderStringAsync(gltfRuntime, id, onSuccess, onError);
                }, function () {
                    GLTF1.GLTFLoaderBase.LoadShaderStringAsync(gltfRuntime, id, onSuccess, onError);
                });
            };
            GLTFLoaderExtension.LoadMaterialAsync = function (gltfRuntime, id, onSuccess, onError) {
                GLTFLoaderExtension.ApplyExtensions(function (loaderExtension) {
                    return loaderExtension.loadMaterialAsync(gltfRuntime, id, onSuccess, onError);
                }, function () {
                    GLTF1.GLTFLoaderBase.LoadMaterialAsync(gltfRuntime, id, onSuccess, onError);
                });
            };
            GLTFLoaderExtension.LoadTextureBufferAsync = function (gltfRuntime, id, onSuccess, onError) {
                GLTFLoaderExtension.ApplyExtensions(function (loaderExtension) {
                    return loaderExtension.loadTextureBufferAsync(gltfRuntime, id, onSuccess, onError);
                }, function () {
                    GLTF1.GLTFLoaderBase.LoadTextureBufferAsync(gltfRuntime, id, onSuccess, onError);
                });
            };
            GLTFLoaderExtension.CreateTextureAsync = function (gltfRuntime, id, buffer, onSuccess, onError) {
                GLTFLoaderExtension.ApplyExtensions(function (loaderExtension) {
                    return loaderExtension.createTextureAsync(gltfRuntime, id, buffer, onSuccess, onError);
                }, function () {
                    GLTF1.GLTFLoaderBase.CreateTextureAsync(gltfRuntime, id, buffer, onSuccess, onError);
                });
            };
            GLTFLoaderExtension.ApplyExtensions = function (func, defaultFunc) {
                for (var extensionName in GLTF1.GLTFLoader.Extensions) {
                    var loaderExtension = GLTF1.GLTFLoader.Extensions[extensionName];
                    if (func(loaderExtension)) {
                        return;
                    }
                }
                defaultFunc();
            };
            return GLTFLoaderExtension;
        }());
        GLTF1.GLTFLoaderExtension = GLTFLoaderExtension;
    })(GLTF1 = BABYLON.GLTF1 || (BABYLON.GLTF1 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFLoaderExtension.js.map



var BABYLON;
(function (BABYLON) {
    var GLTF1;
    (function (GLTF1) {
        var BinaryExtensionBufferName = "binary_glTF";
        ;
        ;
        var GLTFBinaryExtension = /** @class */ (function (_super) {
            __extends(GLTFBinaryExtension, _super);
            function GLTFBinaryExtension() {
                return _super.call(this, "KHR_binary_glTF") || this;
            }
            GLTFBinaryExtension.prototype.loadRuntimeAsync = function (scene, data, rootUrl, onSuccess, onError) {
                var extensionsUsed = data.json.extensionsUsed;
                if (!extensionsUsed || extensionsUsed.indexOf(this.name) === -1 || !data.bin) {
                    return false;
                }
                this._bin = data.bin;
                onSuccess(GLTF1.GLTFLoaderBase.CreateRuntime(data.json, scene, rootUrl));
                return true;
            };
            GLTFBinaryExtension.prototype.loadBufferAsync = function (gltfRuntime, id, onSuccess, onError) {
                if (gltfRuntime.extensionsUsed.indexOf(this.name) === -1) {
                    return false;
                }
                if (id !== BinaryExtensionBufferName) {
                    return false;
                }
                onSuccess(this._bin);
                return true;
            };
            GLTFBinaryExtension.prototype.loadTextureBufferAsync = function (gltfRuntime, id, onSuccess, onError) {
                var texture = gltfRuntime.textures[id];
                var source = gltfRuntime.images[texture.source];
                if (!source.extensions || !(this.name in source.extensions)) {
                    return false;
                }
                var sourceExt = source.extensions[this.name];
                var bufferView = gltfRuntime.bufferViews[sourceExt.bufferView];
                var buffer = GLTF1.GLTFUtils.GetBufferFromBufferView(gltfRuntime, bufferView, 0, bufferView.byteLength, GLTF1.EComponentType.UNSIGNED_BYTE);
                onSuccess(buffer);
                return true;
            };
            GLTFBinaryExtension.prototype.loadShaderStringAsync = function (gltfRuntime, id, onSuccess, onError) {
                var shader = gltfRuntime.shaders[id];
                if (!shader.extensions || !(this.name in shader.extensions)) {
                    return false;
                }
                var binaryExtensionShader = shader.extensions[this.name];
                var bufferView = gltfRuntime.bufferViews[binaryExtensionShader.bufferView];
                var shaderBytes = GLTF1.GLTFUtils.GetBufferFromBufferView(gltfRuntime, bufferView, 0, bufferView.byteLength, GLTF1.EComponentType.UNSIGNED_BYTE);
                setTimeout(function () {
                    var shaderString = GLTF1.GLTFUtils.DecodeBufferToText(shaderBytes);
                    onSuccess(shaderString);
                });
                return true;
            };
            return GLTFBinaryExtension;
        }(GLTF1.GLTFLoaderExtension));
        GLTF1.GLTFBinaryExtension = GLTFBinaryExtension;
        GLTF1.GLTFLoader.RegisterExtension(new GLTFBinaryExtension());
    })(GLTF1 = BABYLON.GLTF1 || (BABYLON.GLTF1 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFBinaryExtension.js.map



var BABYLON;
(function (BABYLON) {
    var GLTF1;
    (function (GLTF1) {
        ;
        ;
        ;
        var GLTFMaterialsCommonExtension = /** @class */ (function (_super) {
            __extends(GLTFMaterialsCommonExtension, _super);
            function GLTFMaterialsCommonExtension() {
                return _super.call(this, "KHR_materials_common") || this;
            }
            GLTFMaterialsCommonExtension.prototype.loadRuntimeExtensionsAsync = function (gltfRuntime, onSuccess, onError) {
                if (!gltfRuntime.extensions)
                    return false;
                var extension = gltfRuntime.extensions[this.name];
                if (!extension)
                    return false;
                // Create lights
                var lights = extension.lights;
                if (lights) {
                    for (var thing in lights) {
                        var light = lights[thing];
                        switch (light.type) {
                            case "ambient":
                                var ambientLight = new BABYLON.HemisphericLight(light.name, new BABYLON.Vector3(0, 1, 0), gltfRuntime.scene);
                                var ambient = light.ambient;
                                if (ambient) {
                                    ambientLight.diffuse = BABYLON.Color3.FromArray(ambient.color || [1, 1, 1]);
                                }
                                break;
                            case "point":
                                var pointLight = new BABYLON.PointLight(light.name, new BABYLON.Vector3(10, 10, 10), gltfRuntime.scene);
                                var point = light.point;
                                if (point) {
                                    pointLight.diffuse = BABYLON.Color3.FromArray(point.color || [1, 1, 1]);
                                }
                                break;
                            case "directional":
                                var dirLight = new BABYLON.DirectionalLight(light.name, new BABYLON.Vector3(0, -1, 0), gltfRuntime.scene);
                                var directional = light.directional;
                                if (directional) {
                                    dirLight.diffuse = BABYLON.Color3.FromArray(directional.color || [1, 1, 1]);
                                }
                                break;
                            case "spot":
                                var spot = light.spot;
                                if (spot) {
                                    var spotLight = new BABYLON.SpotLight(light.name, new BABYLON.Vector3(0, 10, 0), new BABYLON.Vector3(0, -1, 0), spot.fallOffAngle || Math.PI, spot.fallOffExponent || 0.0, gltfRuntime.scene);
                                    spotLight.diffuse = BABYLON.Color3.FromArray(spot.color || [1, 1, 1]);
                                }
                                break;
                            default:
                                BABYLON.Tools.Warn("GLTF Material Common extension: light type \"" + light.type + "\” not supported");
                                break;
                        }
                    }
                }
                return false;
            };
            GLTFMaterialsCommonExtension.prototype.loadMaterialAsync = function (gltfRuntime, id, onSuccess, onError) {
                var material = gltfRuntime.materials[id];
                if (!material || !material.extensions)
                    return false;
                var extension = material.extensions[this.name];
                if (!extension)
                    return false;
                var standardMaterial = new BABYLON.StandardMaterial(id, gltfRuntime.scene);
                standardMaterial.sideOrientation = BABYLON.Material.CounterClockWiseSideOrientation;
                if (extension.technique === "CONSTANT") {
                    standardMaterial.disableLighting = true;
                }
                standardMaterial.backFaceCulling = extension.doubleSided === undefined ? false : !extension.doubleSided;
                standardMaterial.alpha = extension.values.transparency === undefined ? 1.0 : extension.values.transparency;
                standardMaterial.specularPower = extension.values.shininess === undefined ? 0.0 : extension.values.shininess;
                // Ambient
                if (typeof extension.values.ambient === "string") {
                    this._loadTexture(gltfRuntime, extension.values.ambient, standardMaterial, "ambientTexture", onError);
                }
                else {
                    standardMaterial.ambientColor = BABYLON.Color3.FromArray(extension.values.ambient || [0, 0, 0]);
                }
                // Diffuse
                if (typeof extension.values.diffuse === "string") {
                    this._loadTexture(gltfRuntime, extension.values.diffuse, standardMaterial, "diffuseTexture", onError);
                }
                else {
                    standardMaterial.diffuseColor = BABYLON.Color3.FromArray(extension.values.diffuse || [0, 0, 0]);
                }
                // Emission
                if (typeof extension.values.emission === "string") {
                    this._loadTexture(gltfRuntime, extension.values.emission, standardMaterial, "emissiveTexture", onError);
                }
                else {
                    standardMaterial.emissiveColor = BABYLON.Color3.FromArray(extension.values.emission || [0, 0, 0]);
                }
                // Specular
                if (typeof extension.values.specular === "string") {
                    this._loadTexture(gltfRuntime, extension.values.specular, standardMaterial, "specularTexture", onError);
                }
                else {
                    standardMaterial.specularColor = BABYLON.Color3.FromArray(extension.values.specular || [0, 0, 0]);
                }
                return true;
            };
            GLTFMaterialsCommonExtension.prototype._loadTexture = function (gltfRuntime, id, material, propertyPath, onError) {
                // Create buffer from texture url
                GLTF1.GLTFLoaderBase.LoadTextureBufferAsync(gltfRuntime, id, function (buffer) {
                    // Create texture from buffer
                    GLTF1.GLTFLoaderBase.CreateTextureAsync(gltfRuntime, id, buffer, function (texture) { return material[propertyPath] = texture; }, onError);
                }, onError);
            };
            return GLTFMaterialsCommonExtension;
        }(GLTF1.GLTFLoaderExtension));
        GLTF1.GLTFMaterialsCommonExtension = GLTFMaterialsCommonExtension;
        GLTF1.GLTFLoader.RegisterExtension(new GLTFMaterialsCommonExtension());
    })(GLTF1 = BABYLON.GLTF1 || (BABYLON.GLTF1 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFMaterialsCommonExtension.js.map


var BABYLON;
(function (BABYLON) {
    var GLTF2;
    (function (GLTF2) {
        /** Array item helper methods */
        var ArrayItem = /** @class */ (function () {
            function ArrayItem() {
            }
            /** Sets the index of each array element to its index in the array */
            ArrayItem.Assign = function (values) {
                if (values) {
                    for (var index = 0; index < values.length; index++) {
                        values[index]._index = index;
                    }
                }
            };
            return ArrayItem;
        }());
        GLTF2.ArrayItem = ArrayItem;
    })(GLTF2 = BABYLON.GLTF2 || (BABYLON.GLTF2 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFLoaderUtilities.js.map




//# sourceMappingURL=babylon.glTFLoaderInterfaces.js.map


/**
* Defines the GLTF2 module used to import/export GLTF 2.0 files
*/
var BABYLON;
(function (BABYLON) {
    var GLTF2;
    (function (GLTF2) {
        /**
        * Used to load from a GLTF2 file
        */
        var GLTFLoader = /** @class */ (function () {
            function GLTFLoader() {
                /**
                * @ignore
                */
                this._completePromises = new Array();
                this._disposed = false;
                this._state = null;
                this._extensions = {};
                this._defaultSampler = {};
                this._defaultBabylonMaterials = {};
                this._requests = new Array();
                /**
                * Coordinate system that will be used when loading from the gltf file
                */
                this.coordinateSystemMode = BABYLON.GLTFLoaderCoordinateSystemMode.AUTO;
                /**
                * Animation mode that determines which animations should be started when a file is loaded
                */
                this.animationStartMode = BABYLON.GLTFLoaderAnimationStartMode.FIRST;
                /**
                * If the materials in the file should automatically be compiled
                */
                this.compileMaterials = false;
                /**
                * If a clip plane should be usede when loading meshes in the file
                */
                this.useClipPlane = false;
                /**
                * If shadow generators should automatically be compiled
                */
                this.compileShadowGenerators = false;
                /**
                * Observable that fires when the loader is disposed
                */
                this.onDisposeObservable = new BABYLON.Observable();
                /**
                * Observable that fires each time a mesh is loaded
                */
                this.onMeshLoadedObservable = new BABYLON.Observable();
                /**
                * Observable that fires each time a texture is loaded
                */
                this.onTextureLoadedObservable = new BABYLON.Observable();
                /**
                * Observable that fires each time a material is loaded
                */
                this.onMaterialLoadedObservable = new BABYLON.Observable();
                /**
                * Observable that fires each time an extension is loaded
                */
                this.onExtensionLoadedObservable = new BABYLON.Observable();
                /**
                * Observable that fires when the load has completed
                */
                this.onCompleteObservable = new BABYLON.Observable();
            }
            /**
            * @ignore, registers the loader
            * @param name name of the loader
            * @param factory function that converts a loader to a loader extension
            */
            GLTFLoader._Register = function (name, factory) {
                if (GLTFLoader._Factories[name]) {
                    BABYLON.Tools.Error("Extension with the name '" + name + "' already exists");
                    return;
                }
                GLTFLoader._Factories[name] = factory;
                // Keep the order of registration so that extensions registered first are called first.
                GLTFLoader._Names.push(name);
            };
            Object.defineProperty(GLTFLoader.prototype, "state", {
                /**
                * The current state of the loader
                */
                get: function () {
                    return this._state;
                },
                enumerable: true,
                configurable: true
            });
            /**
            * Disposes of the loader
            */
            GLTFLoader.prototype.dispose = function () {
                if (this._disposed) {
                    return;
                }
                this._disposed = true;
                this.onDisposeObservable.notifyObservers(this);
                this.onDisposeObservable.clear();
                this._clear();
            };
            /**
            * Imports one or more meshes from a loaded gltf file and adds them to the scene
            * @param meshesNames a string or array of strings of the mesh names that should be loaded from the file
            * @param scene the scene the meshes should be added to
            * @param data gltf data containing information of the meshes in a loaded file
            * @param rootUrl root url to load from
            * @param onProgress event that fires when loading progress has occured
            * @returns a promise containg the loaded meshes, particles, skeletons and animations
            */
            GLTFLoader.prototype.importMeshAsync = function (meshesNames, scene, data, rootUrl, onProgress) {
                var _this = this;
                return Promise.resolve().then(function () {
                    var nodes = null;
                    if (meshesNames) {
                        var nodeMap_1 = {};
                        if (_this._gltf.nodes) {
                            for (var _i = 0, _a = _this._gltf.nodes; _i < _a.length; _i++) {
                                var node = _a[_i];
                                if (node.name) {
                                    nodeMap_1[node.name] = node;
                                }
                            }
                        }
                        var names = (meshesNames instanceof Array) ? meshesNames : [meshesNames];
                        nodes = names.map(function (name) {
                            var node = nodeMap_1[name];
                            if (!node) {
                                throw new Error("Failed to find node '" + name + "'");
                            }
                            return node;
                        });
                    }
                    return _this._loadAsync(nodes, scene, data, rootUrl, onProgress).then(function () {
                        return {
                            meshes: _this._getMeshes(),
                            particleSystems: [],
                            skeletons: _this._getSkeletons(),
                            animationGroups: _this._getAnimationGroups()
                        };
                    });
                });
            };
            /**
            * Imports all objects from a loaded gltf file and adds them to the scene
            * @param scene the scene the objects should be added to
            * @param data gltf data containing information of the meshes in a loaded file
            * @param rootUrl root url to load from
            * @param onProgress event that fires when loading progress has occured
            * @returns a promise which completes when objects have been loaded to the scene
            */
            GLTFLoader.prototype.loadAsync = function (scene, data, rootUrl, onProgress) {
                return this._loadAsync(null, scene, data, rootUrl, onProgress);
            };
            GLTFLoader.prototype._loadAsync = function (nodes, scene, data, rootUrl, onProgress) {
                var _this = this;
                return Promise.resolve().then(function () {
                    _this._loadExtensions();
                    _this._babylonScene = scene;
                    _this._rootUrl = rootUrl;
                    _this._progressCallback = onProgress;
                    _this._state = BABYLON.GLTFLoaderState.LOADING;
                    _this._loadData(data);
                    _this._checkExtensions();
                    var promises = new Array();
                    if (nodes) {
                        promises.push(_this._loadNodesAsync(nodes));
                    }
                    else {
                        var scene_1 = GLTFLoader._GetProperty("#/scene", _this._gltf.scenes, _this._gltf.scene || 0);
                        promises.push(_this._loadSceneAsync("#/scenes/" + scene_1._index, scene_1));
                    }
                    if (_this.compileMaterials) {
                        promises.push(_this._compileMaterialsAsync());
                    }
                    if (_this.compileShadowGenerators) {
                        promises.push(_this._compileShadowGeneratorsAsync());
                    }
                    var resultPromise = Promise.all(promises).then(function () {
                        _this._state = BABYLON.GLTFLoaderState.READY;
                        _this._startAnimations();
                    });
                    resultPromise.then(function () {
                        _this._rootBabylonMesh.setEnabled(true);
                        BABYLON.Tools.SetImmediate(function () {
                            if (!_this._disposed) {
                                Promise.all(_this._completePromises).then(function () {
                                    _this._state = BABYLON.GLTFLoaderState.COMPLETE;
                                    _this.onCompleteObservable.notifyObservers(_this);
                                    _this.onCompleteObservable.clear();
                                    _this._clear();
                                }).catch(function (error) {
                                    BABYLON.Tools.Error("glTF Loader: " + error.message);
                                    _this._clear();
                                });
                            }
                        });
                    });
                    return resultPromise;
                }).catch(function (error) {
                    BABYLON.Tools.Error("glTF Loader: " + error.message);
                    _this._clear();
                    throw error;
                });
            };
            GLTFLoader.prototype._loadExtensions = function () {
                for (var _i = 0, _a = GLTFLoader._Names; _i < _a.length; _i++) {
                    var name_1 = _a[_i];
                    var extension = GLTFLoader._Factories[name_1](this);
                    this._extensions[name_1] = extension;
                    this.onExtensionLoadedObservable.notifyObservers(extension);
                }
                this.onExtensionLoadedObservable.clear();
            };
            GLTFLoader.prototype._loadData = function (data) {
                this._gltf = data.json;
                this._setupData();
                if (data.bin) {
                    var buffers = this._gltf.buffers;
                    if (buffers && buffers[0] && !buffers[0].uri) {
                        var binaryBuffer = buffers[0];
                        if (binaryBuffer.byteLength < data.bin.byteLength - 3 || binaryBuffer.byteLength > data.bin.byteLength) {
                            BABYLON.Tools.Warn("Binary buffer length (" + binaryBuffer.byteLength + ") from JSON does not match chunk length (" + data.bin.byteLength + ")");
                        }
                        binaryBuffer._data = Promise.resolve(data.bin);
                    }
                    else {
                        BABYLON.Tools.Warn("Unexpected BIN chunk");
                    }
                }
            };
            GLTFLoader.prototype._setupData = function () {
                GLTF2.ArrayItem.Assign(this._gltf.accessors);
                GLTF2.ArrayItem.Assign(this._gltf.animations);
                GLTF2.ArrayItem.Assign(this._gltf.buffers);
                GLTF2.ArrayItem.Assign(this._gltf.bufferViews);
                GLTF2.ArrayItem.Assign(this._gltf.cameras);
                GLTF2.ArrayItem.Assign(this._gltf.images);
                GLTF2.ArrayItem.Assign(this._gltf.materials);
                GLTF2.ArrayItem.Assign(this._gltf.meshes);
                GLTF2.ArrayItem.Assign(this._gltf.nodes);
                GLTF2.ArrayItem.Assign(this._gltf.samplers);
                GLTF2.ArrayItem.Assign(this._gltf.scenes);
                GLTF2.ArrayItem.Assign(this._gltf.skins);
                GLTF2.ArrayItem.Assign(this._gltf.textures);
                if (this._gltf.nodes) {
                    var nodeParents = {};
                    for (var _i = 0, _a = this._gltf.nodes; _i < _a.length; _i++) {
                        var node = _a[_i];
                        if (node.children) {
                            for (var _b = 0, _c = node.children; _b < _c.length; _b++) {
                                var index = _c[_b];
                                nodeParents[index] = node._index;
                            }
                        }
                    }
                    var rootNode = this._createRootNode();
                    for (var _d = 0, _e = this._gltf.nodes; _d < _e.length; _d++) {
                        var node = _e[_d];
                        var parentIndex = nodeParents[node._index];
                        node._parent = parentIndex === undefined ? rootNode : this._gltf.nodes[parentIndex];
                    }
                }
            };
            GLTFLoader.prototype._checkExtensions = function () {
                if (this._gltf.extensionsRequired) {
                    for (var _i = 0, _a = this._gltf.extensionsRequired; _i < _a.length; _i++) {
                        var name_2 = _a[_i];
                        var extension = this._extensions[name_2];
                        if (!extension || !extension.enabled) {
                            throw new Error("Require extension " + name_2 + " is not available");
                        }
                    }
                }
            };
            GLTFLoader.prototype._createRootNode = function () {
                this._rootBabylonMesh = new BABYLON.Mesh("__root__", this._babylonScene);
                this._rootBabylonMesh.setEnabled(false);
                var rootNode = { _babylonMesh: this._rootBabylonMesh };
                switch (this.coordinateSystemMode) {
                    case BABYLON.GLTFLoaderCoordinateSystemMode.AUTO: {
                        if (!this._babylonScene.useRightHandedSystem) {
                            rootNode.rotation = [0, 1, 0, 0];
                            rootNode.scale = [1, 1, -1];
                            GLTFLoader._LoadTransform(rootNode, this._rootBabylonMesh);
                        }
                        break;
                    }
                    case BABYLON.GLTFLoaderCoordinateSystemMode.FORCE_RIGHT_HANDED: {
                        this._babylonScene.useRightHandedSystem = true;
                        break;
                    }
                    default: {
                        throw new Error("Invalid coordinate system mode (" + this.coordinateSystemMode + ")");
                    }
                }
                this.onMeshLoadedObservable.notifyObservers(this._rootBabylonMesh);
                return rootNode;
            };
            GLTFLoader.prototype._loadNodesAsync = function (nodes) {
                var promises = new Array();
                for (var _i = 0, nodes_1 = nodes; _i < nodes_1.length; _i++) {
                    var node = nodes_1[_i];
                    promises.push(this._loadNodeAsync("#/nodes/" + node._index, node));
                }
                promises.push(this._loadAnimationsAsync());
                return Promise.all(promises).then(function () { });
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._loadSceneAsync = function (context, scene) {
                var promise = GLTF2.GLTFLoaderExtension._LoadSceneAsync(this, context, scene);
                if (promise) {
                    return promise;
                }
                var promises = new Array();
                for (var _i = 0, _a = scene.nodes; _i < _a.length; _i++) {
                    var index = _a[_i];
                    var node = GLTFLoader._GetProperty(context + "/nodes/" + index, this._gltf.nodes, index);
                    promises.push(this._loadNodeAsync("#/nodes/" + node._index, node));
                }
                promises.push(this._loadAnimationsAsync());
                return Promise.all(promises).then(function () { });
            };
            GLTFLoader.prototype._forEachPrimitive = function (node, callback) {
                if (node._primitiveBabylonMeshes) {
                    for (var _i = 0, _a = node._primitiveBabylonMeshes; _i < _a.length; _i++) {
                        var babylonMesh = _a[_i];
                        callback(babylonMesh);
                    }
                }
                else {
                    callback(node._babylonMesh);
                }
            };
            GLTFLoader.prototype._getMeshes = function () {
                var meshes = new Array();
                // Root mesh is always first.
                meshes.push(this._rootBabylonMesh);
                var nodes = this._gltf.nodes;
                if (nodes) {
                    for (var _i = 0, nodes_2 = nodes; _i < nodes_2.length; _i++) {
                        var node = nodes_2[_i];
                        if (node._babylonMesh) {
                            meshes.push(node._babylonMesh);
                        }
                        if (node._primitiveBabylonMeshes) {
                            for (var _a = 0, _b = node._primitiveBabylonMeshes; _a < _b.length; _a++) {
                                var babylonMesh = _b[_a];
                                meshes.push(babylonMesh);
                            }
                        }
                    }
                }
                return meshes;
            };
            GLTFLoader.prototype._getSkeletons = function () {
                var skeletons = new Array();
                var skins = this._gltf.skins;
                if (skins) {
                    for (var _i = 0, skins_1 = skins; _i < skins_1.length; _i++) {
                        var skin = skins_1[_i];
                        if (skin._babylonSkeleton) {
                            skeletons.push(skin._babylonSkeleton);
                        }
                    }
                }
                return skeletons;
            };
            GLTFLoader.prototype._getAnimationGroups = function () {
                var animationGroups = new Array();
                var animations = this._gltf.animations;
                if (animations) {
                    for (var _i = 0, animations_1 = animations; _i < animations_1.length; _i++) {
                        var animation = animations_1[_i];
                        if (animation._babylonAnimationGroup) {
                            animationGroups.push(animation._babylonAnimationGroup);
                        }
                    }
                }
                return animationGroups;
            };
            GLTFLoader.prototype._startAnimations = function () {
                switch (this.animationStartMode) {
                    case BABYLON.GLTFLoaderAnimationStartMode.NONE: {
                        // do nothing
                        break;
                    }
                    case BABYLON.GLTFLoaderAnimationStartMode.FIRST: {
                        var babylonAnimationGroups = this._getAnimationGroups();
                        if (babylonAnimationGroups.length !== 0) {
                            babylonAnimationGroups[0].start(true);
                        }
                        break;
                    }
                    case BABYLON.GLTFLoaderAnimationStartMode.ALL: {
                        var babylonAnimationGroups = this._getAnimationGroups();
                        for (var _i = 0, babylonAnimationGroups_1 = babylonAnimationGroups; _i < babylonAnimationGroups_1.length; _i++) {
                            var babylonAnimationGroup = babylonAnimationGroups_1[_i];
                            babylonAnimationGroup.start(true);
                        }
                        break;
                    }
                    default: {
                        BABYLON.Tools.Error("Invalid animation start mode (" + this.animationStartMode + ")");
                        return;
                    }
                }
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._loadNodeAsync = function (context, node) {
                var promise = GLTF2.GLTFLoaderExtension._LoadNodeAsync(this, context, node);
                if (promise) {
                    return promise;
                }
                if (node._babylonMesh) {
                    throw new Error(context + ": Invalid recursive node hierarchy");
                }
                var promises = new Array();
                var babylonMesh = new BABYLON.Mesh(node.name || "node" + node._index, this._babylonScene, node._parent._babylonMesh);
                node._babylonMesh = babylonMesh;
                node._babylonAnimationTargets = node._babylonAnimationTargets || [];
                node._babylonAnimationTargets.push(babylonMesh);
                GLTFLoader._LoadTransform(node, babylonMesh);
                if (node.mesh != undefined) {
                    var mesh = GLTFLoader._GetProperty(context + "/mesh", this._gltf.meshes, node.mesh);
                    promises.push(this._loadMeshAsync("#/meshes/" + mesh._index, node, mesh, babylonMesh));
                }
                if (node.children) {
                    for (var _i = 0, _a = node.children; _i < _a.length; _i++) {
                        var index = _a[_i];
                        var childNode = GLTFLoader._GetProperty(context + "/children/" + index, this._gltf.nodes, index);
                        promises.push(this._loadNodeAsync("#/nodes/" + index, childNode));
                    }
                }
                this.onMeshLoadedObservable.notifyObservers(babylonMesh);
                return Promise.all(promises).then(function () { });
            };
            GLTFLoader.prototype._loadMeshAsync = function (context, node, mesh, babylonMesh) {
                // TODO: instancing
                var _this = this;
                var promises = new Array();
                var primitives = mesh.primitives;
                if (!primitives || primitives.length === 0) {
                    throw new Error(context + ": Primitives are missing");
                }
                GLTF2.ArrayItem.Assign(primitives);
                if (primitives.length === 1) {
                    var primitive = primitives[0];
                    promises.push(this._loadPrimitiveAsync(context + "/primitives/" + primitive._index, node, mesh, primitive, babylonMesh));
                }
                else {
                    node._primitiveBabylonMeshes = [];
                    for (var _i = 0, primitives_1 = primitives; _i < primitives_1.length; _i++) {
                        var primitive = primitives_1[_i];
                        var primitiveBabylonMesh = new BABYLON.Mesh((mesh.name || babylonMesh.name) + "_" + primitive._index, this._babylonScene, babylonMesh);
                        node._primitiveBabylonMeshes.push(primitiveBabylonMesh);
                        promises.push(this._loadPrimitiveAsync(context + "/primitives/" + primitive._index, node, mesh, primitive, primitiveBabylonMesh));
                        this.onMeshLoadedObservable.notifyObservers(babylonMesh);
                    }
                }
                if (node.skin != undefined) {
                    var skin = GLTFLoader._GetProperty(context + "/skin", this._gltf.skins, node.skin);
                    promises.push(this._loadSkinAsync("#/skins/" + skin._index, node, mesh, skin));
                }
                return Promise.all(promises).then(function () {
                    _this._forEachPrimitive(node, function (babylonMesh) {
                        babylonMesh._refreshBoundingInfo(true);
                    });
                });
            };
            GLTFLoader.prototype._loadPrimitiveAsync = function (context, node, mesh, primitive, babylonMesh) {
                var _this = this;
                var promises = new Array();
                this._createMorphTargets(context, node, mesh, primitive, babylonMesh);
                promises.push(this._loadVertexDataAsync(context, primitive, babylonMesh).then(function (babylonGeometry) {
                    return _this._loadMorphTargetsAsync(context, primitive, babylonMesh, babylonGeometry).then(function () {
                        babylonGeometry.applyToMesh(babylonMesh);
                    });
                }));
                var babylonDrawMode = GLTFLoader._GetDrawMode(context, primitive.mode);
                if (primitive.material == undefined) {
                    babylonMesh.material = this._getDefaultMaterial(babylonDrawMode);
                }
                else {
                    var material = GLTFLoader._GetProperty(context + "/material}", this._gltf.materials, primitive.material);
                    promises.push(this._loadMaterialAsync("#/materials/" + material._index, material, babylonMesh, babylonDrawMode, function (babylonMaterial) {
                        babylonMesh.material = babylonMaterial;
                    }));
                }
                return Promise.all(promises).then(function () { });
            };
            GLTFLoader.prototype._loadVertexDataAsync = function (context, primitive, babylonMesh) {
                var _this = this;
                var promise = GLTF2.GLTFLoaderExtension._LoadVertexDataAsync(this, context, primitive, babylonMesh);
                if (promise) {
                    return promise;
                }
                var attributes = primitive.attributes;
                if (!attributes) {
                    throw new Error(context + ": Attributes are missing");
                }
                var promises = new Array();
                var babylonGeometry = new BABYLON.Geometry(babylonMesh.name, this._babylonScene);
                if (primitive.indices == undefined) {
                    babylonMesh.isUnIndexed = true;
                }
                else {
                    var accessor = GLTFLoader._GetProperty(context + "/indices", this._gltf.accessors, primitive.indices);
                    promises.push(this._loadAccessorAsync("#/accessors/" + accessor._index, accessor).then(function (data) {
                        babylonGeometry.setIndices(data);
                    }));
                }
                var loadAttribute = function (attribute, kind, callback) {
                    if (attributes[attribute] == undefined) {
                        return;
                    }
                    babylonMesh._delayInfo = babylonMesh._delayInfo || [];
                    if (babylonMesh._delayInfo.indexOf(kind) === -1) {
                        babylonMesh._delayInfo.push(kind);
                    }
                    var accessor = GLTFLoader._GetProperty(context + "/attributes/" + attribute, _this._gltf.accessors, attributes[attribute]);
                    promises.push(_this._loadVertexAccessorAsync("#/accessors/" + accessor._index, accessor, kind).then(function (babylonVertexBuffer) {
                        babylonGeometry.setVerticesBuffer(babylonVertexBuffer, accessor.count);
                    }));
                    if (callback) {
                        callback(accessor);
                    }
                };
                loadAttribute("POSITION", BABYLON.VertexBuffer.PositionKind);
                loadAttribute("NORMAL", BABYLON.VertexBuffer.NormalKind);
                loadAttribute("TANGENT", BABYLON.VertexBuffer.TangentKind);
                loadAttribute("TEXCOORD_0", BABYLON.VertexBuffer.UVKind);
                loadAttribute("TEXCOORD_1", BABYLON.VertexBuffer.UV2Kind);
                loadAttribute("JOINTS_0", BABYLON.VertexBuffer.MatricesIndicesKind);
                loadAttribute("WEIGHTS_0", BABYLON.VertexBuffer.MatricesWeightsKind);
                loadAttribute("COLOR_0", BABYLON.VertexBuffer.ColorKind, function (accessor) {
                    if (accessor.type === "VEC4" /* VEC4 */) {
                        babylonMesh.hasVertexAlpha = true;
                    }
                });
                return Promise.all(promises).then(function () {
                    return babylonGeometry;
                });
            };
            GLTFLoader.prototype._createMorphTargets = function (context, node, mesh, primitive, babylonMesh) {
                if (!primitive.targets) {
                    return;
                }
                if (node._numMorphTargets == undefined) {
                    node._numMorphTargets = primitive.targets.length;
                }
                else if (primitive.targets.length !== node._numMorphTargets) {
                    throw new Error(context + ": Primitives do not have the same number of targets");
                }
                babylonMesh.morphTargetManager = new BABYLON.MorphTargetManager();
                for (var index = 0; index < primitive.targets.length; index++) {
                    var weight = node.weights ? node.weights[index] : mesh.weights ? mesh.weights[index] : 0;
                    babylonMesh.morphTargetManager.addTarget(new BABYLON.MorphTarget("morphTarget" + index, weight));
                    // TODO: tell the target whether it has positions, normals, tangents
                }
            };
            GLTFLoader.prototype._loadMorphTargetsAsync = function (context, primitive, babylonMesh, babylonGeometry) {
                if (!primitive.targets) {
                    return Promise.resolve();
                }
                var promises = new Array();
                var morphTargetManager = babylonMesh.morphTargetManager;
                for (var index = 0; index < morphTargetManager.numTargets; index++) {
                    var babylonMorphTarget = morphTargetManager.getTarget(index);
                    promises.push(this._loadMorphTargetVertexDataAsync(context + "/targets/" + index, babylonGeometry, primitive.targets[index], babylonMorphTarget));
                }
                return Promise.all(promises).then(function () { });
            };
            GLTFLoader.prototype._loadMorphTargetVertexDataAsync = function (context, babylonGeometry, attributes, babylonMorphTarget) {
                var _this = this;
                var promises = new Array();
                var loadAttribute = function (attribute, kind, setData) {
                    if (attributes[attribute] == undefined) {
                        return;
                    }
                    var babylonVertexBuffer = babylonGeometry.getVertexBuffer(kind);
                    if (!babylonVertexBuffer) {
                        return;
                    }
                    var accessor = GLTFLoader._GetProperty(context + "/" + attribute, _this._gltf.accessors, attributes[attribute]);
                    promises.push(_this._loadAccessorAsync("#/accessors/" + accessor._index, accessor).then(function (data) {
                        if (!(data instanceof Float32Array)) {
                            throw new Error(context + ": Morph target accessor must have float data");
                        }
                        setData(babylonVertexBuffer, data);
                    }));
                };
                loadAttribute("POSITION", BABYLON.VertexBuffer.PositionKind, function (babylonVertexBuffer, data) {
                    babylonVertexBuffer.forEach(data.length, function (value, index) {
                        data[index] += value;
                    });
                    babylonMorphTarget.setPositions(data);
                });
                loadAttribute("NORMAL", BABYLON.VertexBuffer.NormalKind, function (babylonVertexBuffer, data) {
                    babylonVertexBuffer.forEach(data.length, function (value, index) {
                        data[index] += value;
                    });
                    babylonMorphTarget.setNormals(data);
                });
                loadAttribute("TANGENT", BABYLON.VertexBuffer.TangentKind, function (babylonVertexBuffer, data) {
                    var dataIndex = 0;
                    babylonVertexBuffer.forEach(data.length, function (value, index) {
                        // Tangent data for morph targets is stored as xyz delta.
                        // The vertexData.tangent is stored as xyzw.
                        // So we need to skip every fourth vertexData.tangent.
                        if (((index + 1) % 4) !== 0) {
                            data[dataIndex++] += value;
                        }
                    });
                    babylonMorphTarget.setTangents(data);
                });
                return Promise.all(promises).then(function () { });
            };
            GLTFLoader._LoadTransform = function (node, babylonNode) {
                var position = BABYLON.Vector3.Zero();
                var rotation = BABYLON.Quaternion.Identity();
                var scaling = BABYLON.Vector3.One();
                if (node.matrix) {
                    var matrix = BABYLON.Matrix.FromArray(node.matrix);
                    matrix.decompose(scaling, rotation, position);
                }
                else {
                    if (node.translation)
                        position = BABYLON.Vector3.FromArray(node.translation);
                    if (node.rotation)
                        rotation = BABYLON.Quaternion.FromArray(node.rotation);
                    if (node.scale)
                        scaling = BABYLON.Vector3.FromArray(node.scale);
                }
                babylonNode.position = position;
                babylonNode.rotationQuaternion = rotation;
                babylonNode.scaling = scaling;
            };
            GLTFLoader.prototype._loadSkinAsync = function (context, node, mesh, skin) {
                var _this = this;
                var assignSkeleton = function () {
                    _this._forEachPrimitive(node, function (babylonMesh) {
                        babylonMesh.skeleton = skin._babylonSkeleton;
                    });
                    // Ignore the TRS of skinned nodes.
                    // See https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#skins (second implementation note)
                    node._babylonMesh.parent = _this._rootBabylonMesh;
                    node._babylonMesh.position = BABYLON.Vector3.Zero();
                    node._babylonMesh.rotationQuaternion = BABYLON.Quaternion.Identity();
                    node._babylonMesh.scaling = BABYLON.Vector3.One();
                };
                if (skin._loaded) {
                    return skin._loaded.then(function () {
                        assignSkeleton();
                    });
                }
                // TODO: split into two parts so that bones are created before inverseBindMatricesData is loaded (for compiling materials).
                return (skin._loaded = this._loadSkinInverseBindMatricesDataAsync(context, skin).then(function (inverseBindMatricesData) {
                    var skeletonId = "skeleton" + skin._index;
                    var babylonSkeleton = new BABYLON.Skeleton(skin.name || skeletonId, skeletonId, _this._babylonScene);
                    skin._babylonSkeleton = babylonSkeleton;
                    _this._loadBones(context, skin, inverseBindMatricesData);
                    assignSkeleton();
                }));
            };
            GLTFLoader.prototype._loadSkinInverseBindMatricesDataAsync = function (context, skin) {
                if (skin.inverseBindMatrices == undefined) {
                    return Promise.resolve(null);
                }
                var accessor = GLTFLoader._GetProperty(context + "/inverseBindMatrices", this._gltf.accessors, skin.inverseBindMatrices);
                return this._loadAccessorAsync("#/accessors/" + accessor._index, accessor).then(function (data) {
                    return data;
                });
            };
            GLTFLoader.prototype._createBone = function (node, skin, parent, localMatrix, baseMatrix, index) {
                var babylonBone = new BABYLON.Bone(node.name || "joint" + node._index, skin._babylonSkeleton, parent, localMatrix, null, baseMatrix, index);
                node._babylonAnimationTargets = node._babylonAnimationTargets || [];
                node._babylonAnimationTargets.push(babylonBone);
                return babylonBone;
            };
            GLTFLoader.prototype._loadBones = function (context, skin, inverseBindMatricesData) {
                var babylonBones = {};
                for (var _i = 0, _a = skin.joints; _i < _a.length; _i++) {
                    var index = _a[_i];
                    var node = GLTFLoader._GetProperty(context + "/joints/" + index, this._gltf.nodes, index);
                    this._loadBone(node, skin, inverseBindMatricesData, babylonBones);
                }
            };
            GLTFLoader.prototype._loadBone = function (node, skin, inverseBindMatricesData, babylonBones) {
                var babylonBone = babylonBones[node._index];
                if (babylonBone) {
                    return babylonBone;
                }
                var boneIndex = skin.joints.indexOf(node._index);
                var baseMatrix = BABYLON.Matrix.Identity();
                if (inverseBindMatricesData && boneIndex !== -1) {
                    baseMatrix = BABYLON.Matrix.FromArray(inverseBindMatricesData, boneIndex * 16);
                    baseMatrix.invertToRef(baseMatrix);
                }
                var babylonParentBone = null;
                if (node._parent._babylonMesh !== this._rootBabylonMesh) {
                    babylonParentBone = this._loadBone(node._parent, skin, inverseBindMatricesData, babylonBones);
                    baseMatrix.multiplyToRef(babylonParentBone.getInvertedAbsoluteTransform(), baseMatrix);
                }
                babylonBone = this._createBone(node, skin, babylonParentBone, this._getNodeMatrix(node), baseMatrix, boneIndex);
                babylonBones[node._index] = babylonBone;
                return babylonBone;
            };
            GLTFLoader.prototype._getNodeMatrix = function (node) {
                return node.matrix ?
                    BABYLON.Matrix.FromArray(node.matrix) :
                    BABYLON.Matrix.Compose(node.scale ? BABYLON.Vector3.FromArray(node.scale) : BABYLON.Vector3.One(), node.rotation ? BABYLON.Quaternion.FromArray(node.rotation) : BABYLON.Quaternion.Identity(), node.translation ? BABYLON.Vector3.FromArray(node.translation) : BABYLON.Vector3.Zero());
            };
            GLTFLoader.prototype._loadAnimationsAsync = function () {
                var animations = this._gltf.animations;
                if (!animations) {
                    return Promise.resolve();
                }
                var promises = new Array();
                for (var index = 0; index < animations.length; index++) {
                    var animation = animations[index];
                    promises.push(this._loadAnimationAsync("#/animations/" + index, animation));
                }
                return Promise.all(promises).then(function () { });
            };
            GLTFLoader.prototype._loadAnimationAsync = function (context, animation) {
                var babylonAnimationGroup = new BABYLON.AnimationGroup(animation.name || "animation" + animation._index, this._babylonScene);
                animation._babylonAnimationGroup = babylonAnimationGroup;
                var promises = new Array();
                GLTF2.ArrayItem.Assign(animation.channels);
                GLTF2.ArrayItem.Assign(animation.samplers);
                for (var _i = 0, _a = animation.channels; _i < _a.length; _i++) {
                    var channel = _a[_i];
                    promises.push(this._loadAnimationChannelAsync(context + "/channels/" + channel._index, context, animation, channel, babylonAnimationGroup));
                }
                return Promise.all(promises).then(function () {
                    babylonAnimationGroup.normalize();
                });
            };
            GLTFLoader.prototype._loadAnimationChannelAsync = function (context, animationContext, animation, channel, babylonAnimationGroup) {
                var _this = this;
                var targetNode = GLTFLoader._GetProperty(context + "/target/node", this._gltf.nodes, channel.target.node);
                if (!targetNode._babylonMesh) {
                    return Promise.resolve();
                }
                // Ignore animations targeting TRS of skinned nodes.
                // See https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#skins (second implementation note)
                if (targetNode.skin != undefined && channel.target.path !== "weights" /* WEIGHTS */) {
                    return Promise.resolve();
                }
                var sampler = GLTFLoader._GetProperty(context + "/sampler", animation.samplers, channel.sampler);
                return this._loadAnimationSamplerAsync(animationContext + "/samplers/" + channel.sampler, sampler).then(function (data) {
                    var targetPath;
                    var animationType;
                    switch (channel.target.path) {
                        case "translation" /* TRANSLATION */: {
                            targetPath = "position";
                            animationType = BABYLON.Animation.ANIMATIONTYPE_VECTOR3;
                            break;
                        }
                        case "rotation" /* ROTATION */: {
                            targetPath = "rotationQuaternion";
                            animationType = BABYLON.Animation.ANIMATIONTYPE_QUATERNION;
                            break;
                        }
                        case "scale" /* SCALE */: {
                            targetPath = "scaling";
                            animationType = BABYLON.Animation.ANIMATIONTYPE_VECTOR3;
                            break;
                        }
                        case "weights" /* WEIGHTS */: {
                            targetPath = "influence";
                            animationType = BABYLON.Animation.ANIMATIONTYPE_FLOAT;
                            break;
                        }
                        default: {
                            throw new Error(context + ": Invalid target path (" + channel.target.path + ")");
                        }
                    }
                    var outputBufferOffset = 0;
                    var getNextOutputValue;
                    switch (targetPath) {
                        case "position": {
                            getNextOutputValue = function () {
                                var value = BABYLON.Vector3.FromArray(data.output, outputBufferOffset);
                                outputBufferOffset += 3;
                                return value;
                            };
                            break;
                        }
                        case "rotationQuaternion": {
                            getNextOutputValue = function () {
                                var value = BABYLON.Quaternion.FromArray(data.output, outputBufferOffset);
                                outputBufferOffset += 4;
                                return value;
                            };
                            break;
                        }
                        case "scaling": {
                            getNextOutputValue = function () {
                                var value = BABYLON.Vector3.FromArray(data.output, outputBufferOffset);
                                outputBufferOffset += 3;
                                return value;
                            };
                            break;
                        }
                        case "influence": {
                            getNextOutputValue = function () {
                                var value = new Array(targetNode._numMorphTargets);
                                for (var i = 0; i < targetNode._numMorphTargets; i++) {
                                    value[i] = data.output[outputBufferOffset++];
                                }
                                return value;
                            };
                            break;
                        }
                    }
                    var getNextKey;
                    switch (data.interpolation) {
                        case "STEP" /* STEP */: {
                            getNextKey = function (frameIndex) { return ({
                                frame: data.input[frameIndex],
                                value: getNextOutputValue(),
                                interpolation: BABYLON.AnimationKeyInterpolation.STEP
                            }); };
                            break;
                        }
                        case "LINEAR" /* LINEAR */: {
                            getNextKey = function (frameIndex) { return ({
                                frame: data.input[frameIndex],
                                value: getNextOutputValue()
                            }); };
                            break;
                        }
                        case "CUBICSPLINE" /* CUBICSPLINE */: {
                            getNextKey = function (frameIndex) { return ({
                                frame: data.input[frameIndex],
                                inTangent: getNextOutputValue(),
                                value: getNextOutputValue(),
                                outTangent: getNextOutputValue()
                            }); };
                            break;
                        }
                    }
                    var keys = new Array(data.input.length);
                    for (var frameIndex = 0; frameIndex < data.input.length; frameIndex++) {
                        keys[frameIndex] = getNextKey(frameIndex);
                    }
                    if (targetPath === "influence") {
                        var _loop_1 = function (targetIndex) {
                            var animationName = babylonAnimationGroup.name + "_channel" + babylonAnimationGroup.targetedAnimations.length;
                            var babylonAnimation = new BABYLON.Animation(animationName, targetPath, 1, animationType);
                            babylonAnimation.setKeys(keys.map(function (key) { return ({
                                frame: key.frame,
                                inTangent: key.inTangent ? key.inTangent[targetIndex] : undefined,
                                value: key.value[targetIndex],
                                outTangent: key.outTangent ? key.outTangent[targetIndex] : undefined
                            }); }));
                            var morphTargets = new Array();
                            _this._forEachPrimitive(targetNode, function (babylonMesh) {
                                var morphTarget = babylonMesh.morphTargetManager.getTarget(targetIndex);
                                morphTarget.animations.push(babylonAnimation);
                                morphTargets.push(morphTarget);
                            });
                            babylonAnimationGroup.addTargetedAnimation(babylonAnimation, morphTargets);
                        };
                        for (var targetIndex = 0; targetIndex < targetNode._numMorphTargets; targetIndex++) {
                            _loop_1(targetIndex);
                        }
                    }
                    else {
                        var animationName = babylonAnimationGroup.name + "_channel" + babylonAnimationGroup.targetedAnimations.length;
                        var babylonAnimation = new BABYLON.Animation(animationName, targetPath, 1, animationType);
                        babylonAnimation.setKeys(keys);
                        if (targetNode._babylonAnimationTargets) {
                            for (var _i = 0, _a = targetNode._babylonAnimationTargets; _i < _a.length; _i++) {
                                var babylonAnimationTarget = _a[_i];
                                babylonAnimationTarget.animations.push(babylonAnimation);
                            }
                            babylonAnimationGroup.addTargetedAnimation(babylonAnimation, targetNode._babylonAnimationTargets);
                        }
                    }
                });
            };
            GLTFLoader.prototype._loadAnimationSamplerAsync = function (context, sampler) {
                if (sampler._data) {
                    return sampler._data;
                }
                var interpolation = sampler.interpolation || "LINEAR" /* LINEAR */;
                switch (interpolation) {
                    case "STEP" /* STEP */:
                    case "LINEAR" /* LINEAR */:
                    case "CUBICSPLINE" /* CUBICSPLINE */: {
                        break;
                    }
                    default: {
                        throw new Error(context + ": Invalid interpolation (" + sampler.interpolation + ")");
                    }
                }
                var inputData;
                var outputData;
                var inputAccessor = GLTFLoader._GetProperty(context + "/input", this._gltf.accessors, sampler.input);
                var outputAccessor = GLTFLoader._GetProperty(context + "/output", this._gltf.accessors, sampler.output);
                sampler._data = Promise.all([
                    this._loadAccessorAsync("#/accessors/" + inputAccessor._index, inputAccessor).then(function (data) {
                        inputData = data;
                    }),
                    this._loadAccessorAsync("#/accessors/" + outputAccessor._index, outputAccessor).then(function (data) {
                        outputData = data;
                    })
                ]).then(function () {
                    return {
                        input: inputData,
                        interpolation: interpolation,
                        output: outputData,
                    };
                });
                return sampler._data;
            };
            GLTFLoader.prototype._loadBufferAsync = function (context, buffer) {
                if (buffer._data) {
                    return buffer._data;
                }
                if (!buffer.uri) {
                    throw new Error(context + ": Uri is missing");
                }
                buffer._data = this._loadUriAsync(context, buffer.uri);
                return buffer._data;
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._loadBufferViewAsync = function (context, bufferView) {
                if (bufferView._data) {
                    return bufferView._data;
                }
                var buffer = GLTFLoader._GetProperty(context + "/buffer", this._gltf.buffers, bufferView.buffer);
                bufferView._data = this._loadBufferAsync("#/buffers/" + buffer._index, buffer).then(function (data) {
                    try {
                        return new Uint8Array(data.buffer, data.byteOffset + (bufferView.byteOffset || 0), bufferView.byteLength);
                    }
                    catch (e) {
                        throw new Error(context + ": " + e.message);
                    }
                });
                return bufferView._data;
            };
            GLTFLoader.prototype._loadAccessorAsync = function (context, accessor) {
                if (accessor.sparse) {
                    throw new Error(context + ": Sparse accessors are not currently supported");
                }
                if (accessor._data) {
                    return accessor._data;
                }
                var bufferView = GLTFLoader._GetProperty(context + "/bufferView", this._gltf.bufferViews, accessor.bufferView);
                accessor._data = this._loadBufferViewAsync("#/bufferViews/" + bufferView._index, bufferView).then(function (data) {
                    var buffer = data.buffer;
                    var byteOffset = data.byteOffset + (accessor.byteOffset || 0);
                    var length = GLTFLoader._GetNumComponents(context, accessor.type) * accessor.count;
                    try {
                        switch (accessor.componentType) {
                            case 5120 /* BYTE */: {
                                return new Int8Array(buffer, byteOffset, length);
                            }
                            case 5121 /* UNSIGNED_BYTE */: {
                                return new Uint8Array(buffer, byteOffset, length);
                            }
                            case 5122 /* SHORT */: {
                                return new Int16Array(buffer, byteOffset, length);
                            }
                            case 5123 /* UNSIGNED_SHORT */: {
                                return new Uint16Array(buffer, byteOffset, length);
                            }
                            case 5125 /* UNSIGNED_INT */: {
                                return new Uint32Array(buffer, byteOffset, length);
                            }
                            case 5126 /* FLOAT */: {
                                return new Float32Array(buffer, byteOffset, length);
                            }
                            default: {
                                throw new Error(context + ": Invalid accessor component type " + accessor.componentType);
                            }
                        }
                    }
                    catch (e) {
                        throw new Error(context + ": " + e);
                    }
                });
                return accessor._data;
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._loadVertexBufferViewAsync = function (context, bufferView, kind) {
                var _this = this;
                if (bufferView._babylonBuffer) {
                    return bufferView._babylonBuffer;
                }
                bufferView._babylonBuffer = this._loadBufferViewAsync(context, bufferView).then(function (data) {
                    return new BABYLON.Buffer(_this._babylonScene.getEngine(), data, false);
                });
                return bufferView._babylonBuffer;
            };
            GLTFLoader.prototype._loadVertexAccessorAsync = function (context, accessor, kind) {
                var _this = this;
                if (accessor.sparse) {
                    throw new Error(context + ": Sparse accessors are not currently supported");
                }
                if (accessor._babylonVertexBuffer) {
                    return accessor._babylonVertexBuffer;
                }
                var bufferView = GLTFLoader._GetProperty(context + "/bufferView", this._gltf.bufferViews, accessor.bufferView);
                accessor._babylonVertexBuffer = this._loadVertexBufferViewAsync("#/bufferViews/" + bufferView._index, bufferView, kind).then(function (buffer) {
                    var size = GLTFLoader._GetNumComponents(context, accessor.type);
                    return new BABYLON.VertexBuffer(_this._babylonScene.getEngine(), buffer, kind, false, false, bufferView.byteStride, false, accessor.byteOffset, size, accessor.componentType, accessor.normalized, true);
                });
                return accessor._babylonVertexBuffer;
            };
            GLTFLoader.prototype._getDefaultMaterial = function (drawMode) {
                var babylonMaterial = this._defaultBabylonMaterials[drawMode];
                if (!babylonMaterial) {
                    babylonMaterial = this._createMaterial(BABYLON.PBRMaterial, "__gltf_default", drawMode);
                    babylonMaterial.transparencyMode = BABYLON.PBRMaterial.PBRMATERIAL_OPAQUE;
                    babylonMaterial.metallic = 1;
                    babylonMaterial.roughness = 1;
                    this.onMaterialLoadedObservable.notifyObservers(babylonMaterial);
                }
                return babylonMaterial;
            };
            GLTFLoader.prototype._loadMaterialMetallicRoughnessPropertiesAsync = function (context, material, babylonMaterial) {
                var promises = new Array();
                // Ensure metallic workflow
                babylonMaterial.metallic = 1;
                babylonMaterial.roughness = 1;
                var properties = material.pbrMetallicRoughness;
                if (properties) {
                    if (properties.baseColorFactor) {
                        babylonMaterial.albedoColor = BABYLON.Color3.FromArray(properties.baseColorFactor);
                        babylonMaterial.alpha = properties.baseColorFactor[3];
                    }
                    else {
                        babylonMaterial.albedoColor = BABYLON.Color3.White();
                    }
                    babylonMaterial.metallic = properties.metallicFactor == undefined ? 1 : properties.metallicFactor;
                    babylonMaterial.roughness = properties.roughnessFactor == undefined ? 1 : properties.roughnessFactor;
                    if (properties.baseColorTexture) {
                        promises.push(this._loadTextureAsync(context + "/baseColorTexture", properties.baseColorTexture, function (texture) {
                            babylonMaterial.albedoTexture = texture;
                        }));
                    }
                    if (properties.metallicRoughnessTexture) {
                        promises.push(this._loadTextureAsync(context + "/metallicRoughnessTexture", properties.metallicRoughnessTexture, function (texture) {
                            babylonMaterial.metallicTexture = texture;
                        }));
                        babylonMaterial.useMetallnessFromMetallicTextureBlue = true;
                        babylonMaterial.useRoughnessFromMetallicTextureGreen = true;
                        babylonMaterial.useRoughnessFromMetallicTextureAlpha = false;
                    }
                }
                this._loadMaterialAlphaProperties(context, material, babylonMaterial);
                return Promise.all(promises).then(function () { });
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._loadMaterialAsync = function (context, material, babylonMesh, babylonDrawMode, assign) {
                var promise = GLTF2.GLTFLoaderExtension._LoadMaterialAsync(this, context, material, babylonMesh, babylonDrawMode, assign);
                if (promise) {
                    return promise;
                }
                material._babylonData = material._babylonData || {};
                var babylonData = material._babylonData[babylonDrawMode];
                if (!babylonData) {
                    var promises = new Array();
                    var name_3 = material.name || "materialSG_" + material._index;
                    var babylonMaterial = this._createMaterial(BABYLON.PBRMaterial, name_3, babylonDrawMode);
                    promises.push(this._loadMaterialBasePropertiesAsync(context, material, babylonMaterial));
                    promises.push(this._loadMaterialMetallicRoughnessPropertiesAsync(context, material, babylonMaterial));
                    this.onMaterialLoadedObservable.notifyObservers(babylonMaterial);
                    babylonData = {
                        material: babylonMaterial,
                        meshes: [],
                        loaded: Promise.all(promises).then(function () { })
                    };
                    material._babylonData[babylonDrawMode] = babylonData;
                }
                babylonData.meshes.push(babylonMesh);
                assign(babylonData.material);
                return babylonData.loaded;
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._createMaterial = function (type, name, drawMode) {
                var babylonMaterial = new type(name, this._babylonScene);
                babylonMaterial.sideOrientation = this._babylonScene.useRightHandedSystem ? BABYLON.Material.CounterClockWiseSideOrientation : BABYLON.Material.ClockWiseSideOrientation;
                babylonMaterial.fillMode = drawMode;
                return babylonMaterial;
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._loadMaterialBasePropertiesAsync = function (context, material, babylonMaterial) {
                var promises = new Array();
                babylonMaterial.emissiveColor = material.emissiveFactor ? BABYLON.Color3.FromArray(material.emissiveFactor) : new BABYLON.Color3(0, 0, 0);
                if (material.doubleSided) {
                    babylonMaterial.backFaceCulling = false;
                    babylonMaterial.twoSidedLighting = true;
                }
                if (material.normalTexture) {
                    promises.push(this._loadTextureAsync(context + "/normalTexture", material.normalTexture, function (texture) {
                        babylonMaterial.bumpTexture = texture;
                    }));
                    babylonMaterial.invertNormalMapX = !this._babylonScene.useRightHandedSystem;
                    babylonMaterial.invertNormalMapY = this._babylonScene.useRightHandedSystem;
                    if (material.normalTexture.scale != undefined) {
                        babylonMaterial.bumpTexture.level = material.normalTexture.scale;
                    }
                }
                if (material.occlusionTexture) {
                    promises.push(this._loadTextureAsync(context + "/occlusionTexture", material.occlusionTexture, function (texture) {
                        babylonMaterial.ambientTexture = texture;
                    }));
                    babylonMaterial.useAmbientInGrayScale = true;
                    if (material.occlusionTexture.strength != undefined) {
                        babylonMaterial.ambientTextureStrength = material.occlusionTexture.strength;
                    }
                }
                if (material.emissiveTexture) {
                    promises.push(this._loadTextureAsync(context + "/emissiveTexture", material.emissiveTexture, function (texture) {
                        babylonMaterial.emissiveTexture = texture;
                    }));
                }
                return Promise.all(promises).then(function () { });
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._loadMaterialAlphaProperties = function (context, material, babylonMaterial) {
                var alphaMode = material.alphaMode || "OPAQUE" /* OPAQUE */;
                switch (alphaMode) {
                    case "OPAQUE" /* OPAQUE */: {
                        babylonMaterial.transparencyMode = BABYLON.PBRMaterial.PBRMATERIAL_OPAQUE;
                        break;
                    }
                    case "MASK" /* MASK */: {
                        babylonMaterial.transparencyMode = BABYLON.PBRMaterial.PBRMATERIAL_ALPHATEST;
                        babylonMaterial.alphaCutOff = (material.alphaCutoff == undefined ? 0.5 : material.alphaCutoff);
                        if (babylonMaterial.albedoTexture) {
                            babylonMaterial.albedoTexture.hasAlpha = true;
                        }
                        break;
                    }
                    case "BLEND" /* BLEND */: {
                        babylonMaterial.transparencyMode = BABYLON.PBRMaterial.PBRMATERIAL_ALPHABLEND;
                        if (babylonMaterial.albedoTexture) {
                            babylonMaterial.albedoTexture.hasAlpha = true;
                            babylonMaterial.useAlphaFromAlbedoTexture = true;
                        }
                        break;
                    }
                    default: {
                        throw new Error(context + ": Invalid alpha mode (" + material.alphaMode + ")");
                    }
                }
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._loadTextureAsync = function (context, textureInfo, assign) {
                var _this = this;
                var texture = GLTFLoader._GetProperty(context + "/index", this._gltf.textures, textureInfo.index);
                context = "#/textures/" + textureInfo.index;
                var promises = new Array();
                var sampler = (texture.sampler == undefined ? this._defaultSampler : GLTFLoader._GetProperty(context + "/sampler", this._gltf.samplers, texture.sampler));
                var samplerData = this._loadSampler("#/samplers/" + sampler._index, sampler);
                var deferred = new BABYLON.Deferred();
                var babylonTexture = new BABYLON.Texture(null, this._babylonScene, samplerData.noMipMaps, false, samplerData.samplingMode, function () {
                    if (!_this._disposed) {
                        deferred.resolve();
                    }
                }, function (message, exception) {
                    if (!_this._disposed) {
                        deferred.reject(new Error(context + ": " + ((exception && exception.message) ? exception.message : message || "Failed to load texture")));
                    }
                });
                promises.push(deferred.promise);
                babylonTexture.name = texture.name || "texture" + texture._index;
                babylonTexture.wrapU = samplerData.wrapU;
                babylonTexture.wrapV = samplerData.wrapV;
                babylonTexture.coordinatesIndex = textureInfo.texCoord || 0;
                var image = GLTFLoader._GetProperty(context + "/source", this._gltf.images, texture.source);
                promises.push(this._loadImageAsync("#/images/" + image._index, image).then(function (objectURL) {
                    babylonTexture.updateURL(objectURL);
                }));
                assign(babylonTexture);
                this.onTextureLoadedObservable.notifyObservers(babylonTexture);
                return Promise.all(promises).then(function () { });
            };
            GLTFLoader.prototype._loadSampler = function (context, sampler) {
                if (!sampler._data) {
                    sampler._data = {
                        noMipMaps: (sampler.minFilter === 9728 /* NEAREST */ || sampler.minFilter === 9729 /* LINEAR */),
                        samplingMode: GLTFLoader._GetTextureSamplingMode(context, sampler.magFilter, sampler.minFilter),
                        wrapU: GLTFLoader._GetTextureWrapMode(context, sampler.wrapS),
                        wrapV: GLTFLoader._GetTextureWrapMode(context, sampler.wrapT)
                    };
                }
                ;
                return sampler._data;
            };
            GLTFLoader.prototype._loadImageAsync = function (context, image) {
                if (image._objectURL) {
                    return image._objectURL;
                }
                var promise;
                if (image.uri) {
                    promise = this._loadUriAsync(context, image.uri);
                }
                else {
                    var bufferView = GLTFLoader._GetProperty(context + "/bufferView", this._gltf.bufferViews, image.bufferView);
                    promise = this._loadBufferViewAsync("#/bufferViews/" + bufferView._index, bufferView);
                }
                image._objectURL = promise.then(function (data) {
                    return URL.createObjectURL(new Blob([data], { type: image.mimeType }));
                });
                return image._objectURL;
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._loadUriAsync = function (context, uri) {
                var _this = this;
                var promise = GLTF2.GLTFLoaderExtension._LoadUriAsync(this, context, uri);
                if (promise) {
                    return promise;
                }
                if (!GLTFLoader._ValidateUri(uri)) {
                    throw new Error(context + ": Uri '" + uri + "' is invalid");
                }
                if (BABYLON.Tools.IsBase64(uri)) {
                    return Promise.resolve(new Uint8Array(BABYLON.Tools.DecodeBase64(uri)));
                }
                return new Promise(function (resolve, reject) {
                    var request = BABYLON.Tools.LoadFile(_this._rootUrl + uri, function (data) {
                        if (!_this._disposed) {
                            resolve(new Uint8Array(data));
                        }
                    }, function (event) {
                        if (!_this._disposed) {
                            try {
                                if (request && _this._state === BABYLON.GLTFLoaderState.LOADING) {
                                    request._lengthComputable = event.lengthComputable;
                                    request._loaded = event.loaded;
                                    request._total = event.total;
                                    _this._onProgress();
                                }
                            }
                            catch (e) {
                                reject(e);
                            }
                        }
                    }, _this._babylonScene.database, true, function (request, exception) {
                        if (!_this._disposed) {
                            reject(new BABYLON.LoadFileError(context + ": Failed to load '" + uri + "'" + (request ? ": " + request.status + " " + request.statusText : ""), request));
                        }
                    });
                    _this._requests.push(request);
                });
            };
            GLTFLoader.prototype._onProgress = function () {
                if (!this._progressCallback) {
                    return;
                }
                var lengthComputable = true;
                var loaded = 0;
                var total = 0;
                for (var _i = 0, _a = this._requests; _i < _a.length; _i++) {
                    var request = _a[_i];
                    if (request._lengthComputable === undefined || request._loaded === undefined || request._total === undefined) {
                        return;
                    }
                    lengthComputable = lengthComputable && request._lengthComputable;
                    loaded += request._loaded;
                    total += request._total;
                }
                this._progressCallback(new BABYLON.SceneLoaderProgressEvent(lengthComputable, loaded, lengthComputable ? total : 0));
            };
            /**
            * @ignore
            */
            GLTFLoader._GetProperty = function (context, array, index) {
                if (!array || index == undefined || !array[index]) {
                    throw new Error(context + ": Failed to find index (" + index + ")");
                }
                return array[index];
            };
            GLTFLoader._GetTextureWrapMode = function (context, mode) {
                // Set defaults if undefined
                mode = mode == undefined ? 10497 /* REPEAT */ : mode;
                switch (mode) {
                    case 33071 /* CLAMP_TO_EDGE */: return BABYLON.Texture.CLAMP_ADDRESSMODE;
                    case 33648 /* MIRRORED_REPEAT */: return BABYLON.Texture.MIRROR_ADDRESSMODE;
                    case 10497 /* REPEAT */: return BABYLON.Texture.WRAP_ADDRESSMODE;
                    default:
                        BABYLON.Tools.Warn(context + ": Invalid texture wrap mode (" + mode + ")");
                        return BABYLON.Texture.WRAP_ADDRESSMODE;
                }
            };
            GLTFLoader._GetTextureSamplingMode = function (context, magFilter, minFilter) {
                // Set defaults if undefined
                magFilter = magFilter == undefined ? 9729 /* LINEAR */ : magFilter;
                minFilter = minFilter == undefined ? 9987 /* LINEAR_MIPMAP_LINEAR */ : minFilter;
                if (magFilter === 9729 /* LINEAR */) {
                    switch (minFilter) {
                        case 9728 /* NEAREST */: return BABYLON.Texture.LINEAR_NEAREST;
                        case 9729 /* LINEAR */: return BABYLON.Texture.LINEAR_LINEAR;
                        case 9984 /* NEAREST_MIPMAP_NEAREST */: return BABYLON.Texture.LINEAR_NEAREST_MIPNEAREST;
                        case 9985 /* LINEAR_MIPMAP_NEAREST */: return BABYLON.Texture.LINEAR_LINEAR_MIPNEAREST;
                        case 9986 /* NEAREST_MIPMAP_LINEAR */: return BABYLON.Texture.LINEAR_NEAREST_MIPLINEAR;
                        case 9987 /* LINEAR_MIPMAP_LINEAR */: return BABYLON.Texture.LINEAR_LINEAR_MIPLINEAR;
                        default:
                            BABYLON.Tools.Warn(context + ": Invalid texture minification filter (" + minFilter + ")");
                            return BABYLON.Texture.LINEAR_LINEAR_MIPLINEAR;
                    }
                }
                else {
                    if (magFilter !== 9728 /* NEAREST */) {
                        BABYLON.Tools.Warn(context + ": Invalid texture magnification filter (" + magFilter + ")");
                    }
                    switch (minFilter) {
                        case 9728 /* NEAREST */: return BABYLON.Texture.NEAREST_NEAREST;
                        case 9729 /* LINEAR */: return BABYLON.Texture.NEAREST_LINEAR;
                        case 9984 /* NEAREST_MIPMAP_NEAREST */: return BABYLON.Texture.NEAREST_NEAREST_MIPNEAREST;
                        case 9985 /* LINEAR_MIPMAP_NEAREST */: return BABYLON.Texture.NEAREST_LINEAR_MIPNEAREST;
                        case 9986 /* NEAREST_MIPMAP_LINEAR */: return BABYLON.Texture.NEAREST_NEAREST_MIPLINEAR;
                        case 9987 /* LINEAR_MIPMAP_LINEAR */: return BABYLON.Texture.NEAREST_LINEAR_MIPLINEAR;
                        default:
                            BABYLON.Tools.Warn(context + ": Invalid texture minification filter (" + minFilter + ")");
                            return BABYLON.Texture.NEAREST_NEAREST_MIPNEAREST;
                    }
                }
            };
            GLTFLoader._GetNumComponents = function (context, type) {
                switch (type) {
                    case "SCALAR": return 1;
                    case "VEC2": return 2;
                    case "VEC3": return 3;
                    case "VEC4": return 4;
                    case "MAT2": return 4;
                    case "MAT3": return 9;
                    case "MAT4": return 16;
                }
                throw new Error(context + ": Invalid type (" + type + ")");
            };
            GLTFLoader._ValidateUri = function (uri) {
                return (BABYLON.Tools.IsBase64(uri) || uri.indexOf("..") === -1);
            };
            GLTFLoader._GetDrawMode = function (context, mode) {
                if (mode == undefined) {
                    mode = 4 /* TRIANGLES */;
                }
                switch (mode) {
                    case 0 /* POINTS */: return BABYLON.Material.PointListDrawMode;
                    case 1 /* LINES */: return BABYLON.Material.LineListDrawMode;
                    case 2 /* LINE_LOOP */: return BABYLON.Material.LineLoopDrawMode;
                    case 3 /* LINE_STRIP */: return BABYLON.Material.LineStripDrawMode;
                    case 4 /* TRIANGLES */: return BABYLON.Material.TriangleFillMode;
                    case 5 /* TRIANGLE_STRIP */: return BABYLON.Material.TriangleStripDrawMode;
                    case 6 /* TRIANGLE_FAN */: return BABYLON.Material.TriangleFanDrawMode;
                }
                throw new Error(context + ": Invalid mesh primitive mode (" + mode + ")");
            };
            GLTFLoader.prototype._compileMaterialsAsync = function () {
                var promises = new Array();
                if (this._gltf.materials) {
                    for (var _i = 0, _a = this._gltf.materials; _i < _a.length; _i++) {
                        var material = _a[_i];
                        if (material._babylonData) {
                            for (var babylonDrawMode in material._babylonData) {
                                var babylonData = material._babylonData[babylonDrawMode];
                                for (var _b = 0, _c = babylonData.meshes; _b < _c.length; _b++) {
                                    var babylonMesh = _c[_b];
                                    // Ensure nonUniformScaling is set if necessary.
                                    babylonMesh.computeWorldMatrix(true);
                                    var babylonMaterial = babylonData.material;
                                    promises.push(babylonMaterial.forceCompilationAsync(babylonMesh));
                                    if (this.useClipPlane) {
                                        promises.push(babylonMaterial.forceCompilationAsync(babylonMesh, { clipPlane: true }));
                                    }
                                }
                            }
                        }
                    }
                }
                return Promise.all(promises).then(function () { });
            };
            GLTFLoader.prototype._compileShadowGeneratorsAsync = function () {
                var promises = new Array();
                var lights = this._babylonScene.lights;
                for (var _i = 0, lights_1 = lights; _i < lights_1.length; _i++) {
                    var light = lights_1[_i];
                    var generator = light.getShadowGenerator();
                    if (generator) {
                        promises.push(generator.forceCompilationAsync());
                    }
                }
                return Promise.all(promises).then(function () { });
            };
            GLTFLoader.prototype._clear = function () {
                for (var _i = 0, _a = this._requests; _i < _a.length; _i++) {
                    var request = _a[_i];
                    request.abort();
                }
                this._requests.length = 0;
                if (this._gltf && this._gltf.images) {
                    for (var _b = 0, _c = this._gltf.images; _b < _c.length; _b++) {
                        var image = _c[_b];
                        if (image._objectURL) {
                            image._objectURL.then(function (value) {
                                URL.revokeObjectURL(value);
                            });
                            image._objectURL = undefined;
                        }
                    }
                }
                delete this._gltf;
                delete this._babylonScene;
                this._completePromises.length = 0;
                for (var name_4 in this._extensions) {
                    this._extensions[name_4].dispose();
                }
                this._extensions = {};
                delete this._rootBabylonMesh;
                delete this._progressCallback;
                this.onMeshLoadedObservable.clear();
                this.onTextureLoadedObservable.clear();
                this.onMaterialLoadedObservable.clear();
            };
            /**
            * @ignore
            */
            GLTFLoader.prototype._applyExtensions = function (actionAsync) {
                for (var _i = 0, _a = GLTFLoader._Names; _i < _a.length; _i++) {
                    var name_5 = _a[_i];
                    var extension = this._extensions[name_5];
                    if (extension.enabled) {
                        var promise = actionAsync(extension);
                        if (promise) {
                            return promise;
                        }
                    }
                }
                return null;
            };
            GLTFLoader._Names = new Array();
            GLTFLoader._Factories = {};
            return GLTFLoader;
        }());
        GLTF2.GLTFLoader = GLTFLoader;
        BABYLON.GLTFFileLoader.CreateGLTFLoaderV2 = function () { return new GLTFLoader(); };
    })(GLTF2 = BABYLON.GLTF2 || (BABYLON.GLTF2 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFLoader.js.map


var BABYLON;
(function (BABYLON) {
    var GLTF2;
    (function (GLTF2) {
        /**
         * Abstract class that can be implemented to extend existing gltf loader behavior.
         */
        var GLTFLoaderExtension = /** @class */ (function () {
            function GLTFLoaderExtension(loader) {
                this.enabled = true;
                this._loader = loader;
            }
            GLTFLoaderExtension.prototype.dispose = function () {
                delete this._loader;
            };
            // #region Overridable Methods
            /** Override this method to modify the default behavior for loading scenes. */
            GLTFLoaderExtension.prototype._loadSceneAsync = function (context, node) { return null; };
            /** Override this method to modify the default behavior for loading nodes. */
            GLTFLoaderExtension.prototype._loadNodeAsync = function (context, node) { return null; };
            /** Override this method to modify the default behavior for loading mesh primitive vertex data. */
            GLTFLoaderExtension.prototype._loadVertexDataAsync = function (context, primitive, babylonMesh) { return null; };
            /** Override this method to modify the default behavior for loading materials. */
            GLTFLoaderExtension.prototype._loadMaterialAsync = function (context, material, babylonMesh, babylonDrawMode, assign) { return null; };
            /** Override this method to modify the default behavior for loading uris. */
            GLTFLoaderExtension.prototype._loadUriAsync = function (context, uri) { return null; };
            // #endregion
            /** Helper method called by a loader extension to load an glTF extension. */
            GLTFLoaderExtension.prototype._loadExtensionAsync = function (context, property, actionAsync) {
                if (!property.extensions) {
                    return null;
                }
                var extensions = property.extensions;
                var extension = extensions[this.name];
                if (!extension) {
                    return null;
                }
                // Clear out the extension before executing the action to avoid recursing into the same property.
                delete extensions[this.name];
                try {
                    return actionAsync(context + "/extensions/" + this.name, extension);
                }
                finally {
                    // Restore the extension after executing the action.
                    extensions[this.name] = extension;
                }
            };
            /** Helper method called by the loader to allow extensions to override loading scenes. */
            GLTFLoaderExtension._LoadSceneAsync = function (loader, context, scene) {
                return loader._applyExtensions(function (extension) { return extension._loadSceneAsync(context, scene); });
            };
            /** Helper method called by the loader to allow extensions to override loading nodes. */
            GLTFLoaderExtension._LoadNodeAsync = function (loader, context, node) {
                return loader._applyExtensions(function (extension) { return extension._loadNodeAsync(context, node); });
            };
            /** Helper method called by the loader to allow extensions to override loading mesh primitive vertex data. */
            GLTFLoaderExtension._LoadVertexDataAsync = function (loader, context, primitive, babylonMesh) {
                return loader._applyExtensions(function (extension) { return extension._loadVertexDataAsync(context, primitive, babylonMesh); });
            };
            /** Helper method called by the loader to allow extensions to override loading materials. */
            GLTFLoaderExtension._LoadMaterialAsync = function (loader, context, material, babylonMesh, babylonDrawMode, assign) {
                return loader._applyExtensions(function (extension) { return extension._loadMaterialAsync(context, material, babylonMesh, babylonDrawMode, assign); });
            };
            /** Helper method called by the loader to allow extensions to override loading uris. */
            GLTFLoaderExtension._LoadUriAsync = function (loader, context, uri) {
                return loader._applyExtensions(function (extension) { return extension._loadUriAsync(context, uri); });
            };
            return GLTFLoaderExtension;
        }());
        GLTF2.GLTFLoaderExtension = GLTFLoaderExtension;
    })(GLTF2 = BABYLON.GLTF2 || (BABYLON.GLTF2 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=babylon.glTFLoaderExtension.js.map



var BABYLON;
(function (BABYLON) {
    var GLTF2;
    (function (GLTF2) {
        var Extensions;
        (function (Extensions) {
            // https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/MSFT_lod
            var NAME = "MSFT_lod";
            var MSFT_lod = /** @class */ (function (_super) {
                __extends(MSFT_lod, _super);
                function MSFT_lod() {
                    var _this = _super !== null && _super.apply(this, arguments) || this;
                    _this.name = NAME;
                    /**
                     * Maximum number of LODs to load, starting from the lowest LOD.
                     */
                    _this.maxLODsToLoad = Number.MAX_VALUE;
                    _this._loadingNodeLOD = null;
                    _this._loadNodeSignals = {};
                    _this._loadingMaterialLOD = null;
                    _this._loadMaterialSignals = {};
                    return _this;
                }
                MSFT_lod.prototype._loadNodeAsync = function (context, node) {
                    var _this = this;
                    return this._loadExtensionAsync(context, node, function (extensionContext, extension) {
                        var firstPromise;
                        var nodeLODs = _this._getLODs(extensionContext, node, _this._loader._gltf.nodes, extension.ids);
                        var _loop_1 = function (indexLOD) {
                            var nodeLOD = nodeLODs[indexLOD];
                            if (indexLOD !== 0) {
                                _this._loadingNodeLOD = nodeLOD;
                                if (!_this._loadNodeSignals[nodeLOD._index]) {
                                    _this._loadNodeSignals[nodeLOD._index] = new BABYLON.Deferred();
                                }
                            }
                            var promise = _this._loader._loadNodeAsync("#/nodes/" + nodeLOD._index, nodeLOD).then(function () {
                                if (indexLOD !== 0) {
                                    var previousNodeLOD = nodeLODs[indexLOD - 1];
                                    if (previousNodeLOD._babylonMesh) {
                                        previousNodeLOD._babylonMesh.dispose(false, true);
                                        delete previousNodeLOD._babylonMesh;
                                    }
                                }
                                if (indexLOD !== nodeLODs.length - 1) {
                                    var nodeIndex = nodeLODs[indexLOD + 1]._index;
                                    if (_this._loadNodeSignals[nodeIndex]) {
                                        _this._loadNodeSignals[nodeIndex].resolve();
                                        delete _this._loadNodeSignals[nodeIndex];
                                    }
                                }
                            });
                            if (indexLOD === 0) {
                                firstPromise = promise;
                            }
                            else {
                                _this._loader._completePromises.push(promise);
                                _this._loadingNodeLOD = null;
                            }
                        };
                        for (var indexLOD = 0; indexLOD < nodeLODs.length; indexLOD++) {
                            _loop_1(indexLOD);
                        }
                        return firstPromise;
                    });
                };
                MSFT_lod.prototype._loadMaterialAsync = function (context, material, babylonMesh, babylonDrawMode, assign) {
                    var _this = this;
                    // Don't load material LODs if already loading a node LOD.
                    if (this._loadingNodeLOD) {
                        return null;
                    }
                    return this._loadExtensionAsync(context, material, function (extensionContext, extension) {
                        var firstPromise;
                        var materialLODs = _this._getLODs(extensionContext, material, _this._loader._gltf.materials, extension.ids);
                        var _loop_2 = function (indexLOD) {
                            var materialLOD = materialLODs[indexLOD];
                            if (indexLOD !== 0) {
                                _this._loadingMaterialLOD = materialLOD;
                                if (!_this._loadMaterialSignals[materialLOD._index]) {
                                    _this._loadMaterialSignals[materialLOD._index] = new BABYLON.Deferred();
                                }
                            }
                            var promise = _this._loader._loadMaterialAsync("#/materials/" + materialLOD._index, materialLOD, babylonMesh, babylonDrawMode, indexLOD === 0 ? assign : function () { }).then(function () {
                                if (indexLOD !== 0) {
                                    var babylonDataLOD = materialLOD._babylonData;
                                    assign(babylonDataLOD[babylonDrawMode].material);
                                    var previousBabylonDataLOD = materialLODs[indexLOD - 1]._babylonData;
                                    if (previousBabylonDataLOD[babylonDrawMode]) {
                                        previousBabylonDataLOD[babylonDrawMode].material.dispose();
                                        delete previousBabylonDataLOD[babylonDrawMode];
                                    }
                                }
                                if (indexLOD !== materialLODs.length - 1) {
                                    var materialIndex = materialLODs[indexLOD + 1]._index;
                                    if (_this._loadMaterialSignals[materialIndex]) {
                                        _this._loadMaterialSignals[materialIndex].resolve();
                                        delete _this._loadMaterialSignals[materialIndex];
                                    }
                                }
                            });
                            if (indexLOD === 0) {
                                firstPromise = promise;
                            }
                            else {
                                _this._loader._completePromises.push(promise);
                                _this._loadingMaterialLOD = null;
                            }
                        };
                        for (var indexLOD = 0; indexLOD < materialLODs.length; indexLOD++) {
                            _loop_2(indexLOD);
                        }
                        return firstPromise;
                    });
                };
                MSFT_lod.prototype._loadUriAsync = function (context, uri) {
                    var _this = this;
                    // Defer the loading of uris if loading a material or node LOD.
                    if (this._loadingMaterialLOD) {
                        var index = this._loadingMaterialLOD._index;
                        return this._loadMaterialSignals[index].promise.then(function () {
                            return _this._loader._loadUriAsync(context, uri);
                        });
                    }
                    else if (this._loadingNodeLOD) {
                        var index = this._loadingNodeLOD._index;
                        return this._loadNodeSignals[index].promise.then(function () {
                            return _this._loader._loadUriAsync(context, uri);
                        });
                    }
                    return null;
                };
                /**
                 * Gets an array of LOD properties from lowest to highest.
                 */
                MSFT_lod.prototype._getLODs = function (context, property, array, ids) {
                    if (this.maxLODsToLoad <= 0) {
                        throw new Error("maxLODsToLoad must be greater than zero");
                    }
                    var properties = new Array();
                    for (var i = ids.length - 1; i >= 0; i--) {
                        properties.push(GLTF2.GLTFLoader._GetProperty(context + "/ids/" + ids[i], array, ids[i]));
                        if (properties.length === this.maxLODsToLoad) {
                            return properties;
                        }
                    }
                    properties.push(property);
                    return properties;
                };
                return MSFT_lod;
            }(GLTF2.GLTFLoaderExtension));
            Extensions.MSFT_lod = MSFT_lod;
            GLTF2.GLTFLoader._Register(NAME, function (loader) { return new MSFT_lod(loader); });
        })(Extensions = GLTF2.Extensions || (GLTF2.Extensions = {}));
    })(GLTF2 = BABYLON.GLTF2 || (BABYLON.GLTF2 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=MSFT_lod.js.map



/** Module defining extensions to gltf */
var BABYLON;
(function (BABYLON) {
    var GLTF2;
    (function (GLTF2) {
        var Extensions;
        (function (Extensions) {
            // https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_draco_mesh_compression
            var NAME = "KHR_draco_mesh_compression";
            var KHR_draco_mesh_compression = /** @class */ (function (_super) {
                __extends(KHR_draco_mesh_compression, _super);
                function KHR_draco_mesh_compression(loader) {
                    var _this = _super.call(this, loader) || this;
                    _this.name = NAME;
                    _this._dracoCompression = null;
                    // Disable extension if decoder is not available.
                    if (!BABYLON.DracoCompression.DecoderAvailable) {
                        _this.enabled = false;
                    }
                    return _this;
                }
                KHR_draco_mesh_compression.prototype.dispose = function () {
                    if (this._dracoCompression) {
                        this._dracoCompression.dispose();
                    }
                    _super.prototype.dispose.call(this);
                };
                KHR_draco_mesh_compression.prototype._loadVertexDataAsync = function (context, primitive, babylonMesh) {
                    var _this = this;
                    return this._loadExtensionAsync(context, primitive, function (extensionContext, extension) {
                        if (primitive.mode != undefined) {
                            if (primitive.mode !== 5 /* TRIANGLE_STRIP */ &&
                                primitive.mode !== 4 /* TRIANGLES */) {
                                throw new Error(context + ": Unsupported mode " + primitive.mode);
                            }
                            // TODO: handle triangle strips
                            if (primitive.mode === 5 /* TRIANGLE_STRIP */) {
                                throw new Error(context + ": Mode " + primitive.mode + " is not currently supported");
                            }
                        }
                        var attributes = {};
                        var loadAttribute = function (name, kind) {
                            var uniqueId = extension.attributes[name];
                            if (uniqueId == undefined) {
                                return;
                            }
                            babylonMesh._delayInfo = babylonMesh._delayInfo || [];
                            if (babylonMesh._delayInfo.indexOf(kind) === -1) {
                                babylonMesh._delayInfo.push(kind);
                            }
                            attributes[kind] = uniqueId;
                        };
                        loadAttribute("POSITION", BABYLON.VertexBuffer.PositionKind);
                        loadAttribute("NORMAL", BABYLON.VertexBuffer.NormalKind);
                        loadAttribute("TANGENT", BABYLON.VertexBuffer.TangentKind);
                        loadAttribute("TEXCOORD_0", BABYLON.VertexBuffer.UVKind);
                        loadAttribute("TEXCOORD_1", BABYLON.VertexBuffer.UV2Kind);
                        loadAttribute("JOINTS_0", BABYLON.VertexBuffer.MatricesIndicesKind);
                        loadAttribute("WEIGHTS_0", BABYLON.VertexBuffer.MatricesWeightsKind);
                        loadAttribute("COLOR_0", BABYLON.VertexBuffer.ColorKind);
                        var bufferView = GLTF2.GLTFLoader._GetProperty(extensionContext, _this._loader._gltf.bufferViews, extension.bufferView);
                        if (!bufferView._dracoBabylonGeometry) {
                            bufferView._dracoBabylonGeometry = _this._loader._loadBufferViewAsync("#/bufferViews/" + bufferView._index, bufferView).then(function (data) {
                                if (!_this._dracoCompression) {
                                    _this._dracoCompression = new BABYLON.DracoCompression();
                                }
                                return _this._dracoCompression.decodeMeshAsync(data, attributes).then(function (babylonVertexData) {
                                    var babylonGeometry = new BABYLON.Geometry(babylonMesh.name, _this._loader._babylonScene);
                                    babylonVertexData.applyToGeometry(babylonGeometry);
                                    return babylonGeometry;
                                }).catch(function (error) {
                                    throw new Error(context + ": " + error.message);
                                });
                            });
                        }
                        return bufferView._dracoBabylonGeometry;
                    });
                };
                return KHR_draco_mesh_compression;
            }(GLTF2.GLTFLoaderExtension));
            Extensions.KHR_draco_mesh_compression = KHR_draco_mesh_compression;
            GLTF2.GLTFLoader._Register(NAME, function (loader) { return new KHR_draco_mesh_compression(loader); });
        })(Extensions = GLTF2.Extensions || (GLTF2.Extensions = {}));
    })(GLTF2 = BABYLON.GLTF2 || (BABYLON.GLTF2 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=KHR_draco_mesh_compression.js.map



var BABYLON;
(function (BABYLON) {
    var GLTF2;
    (function (GLTF2) {
        var Extensions;
        (function (Extensions) {
            // https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness
            var NAME = "KHR_materials_pbrSpecularGlossiness";
            var KHR_materials_pbrSpecularGlossiness = /** @class */ (function (_super) {
                __extends(KHR_materials_pbrSpecularGlossiness, _super);
                function KHR_materials_pbrSpecularGlossiness() {
                    var _this = _super !== null && _super.apply(this, arguments) || this;
                    _this.name = NAME;
                    return _this;
                }
                KHR_materials_pbrSpecularGlossiness.prototype._loadMaterialAsync = function (context, material, babylonMesh, babylonDrawMode, assign) {
                    var _this = this;
                    return this._loadExtensionAsync(context, material, function (extensionContext, extension) {
                        material._babylonData = material._babylonData || {};
                        var babylonData = material._babylonData[babylonDrawMode];
                        if (!babylonData) {
                            var promises = new Array();
                            var name_1 = material.name || "materialSG_" + material._index;
                            var babylonMaterial = _this._loader._createMaterial(BABYLON.PBRMaterial, name_1, babylonDrawMode);
                            promises.push(_this._loader._loadMaterialBasePropertiesAsync(context, material, babylonMaterial));
                            promises.push(_this._loadSpecularGlossinessPropertiesAsync(extensionContext, material, extension, babylonMaterial));
                            _this._loader.onMaterialLoadedObservable.notifyObservers(babylonMaterial);
                            babylonData = {
                                material: babylonMaterial,
                                meshes: [],
                                loaded: Promise.all(promises).then(function () { })
                            };
                            material._babylonData[babylonDrawMode] = babylonData;
                        }
                        babylonData.meshes.push(babylonMesh);
                        assign(babylonData.material);
                        return babylonData.loaded;
                    });
                };
                KHR_materials_pbrSpecularGlossiness.prototype._loadSpecularGlossinessPropertiesAsync = function (context, material, properties, babylonMaterial) {
                    var promises = new Array();
                    if (properties.diffuseFactor) {
                        babylonMaterial.albedoColor = BABYLON.Color3.FromArray(properties.diffuseFactor);
                        babylonMaterial.alpha = properties.diffuseFactor[3];
                    }
                    else {
                        babylonMaterial.albedoColor = BABYLON.Color3.White();
                    }
                    babylonMaterial.reflectivityColor = properties.specularFactor ? BABYLON.Color3.FromArray(properties.specularFactor) : BABYLON.Color3.White();
                    babylonMaterial.microSurface = properties.glossinessFactor == undefined ? 1 : properties.glossinessFactor;
                    if (properties.diffuseTexture) {
                        promises.push(this._loader._loadTextureAsync(context + "/diffuseTexture", properties.diffuseTexture, function (texture) {
                            babylonMaterial.albedoTexture = texture;
                        }));
                    }
                    if (properties.specularGlossinessTexture) {
                        promises.push(this._loader._loadTextureAsync(context + "/specularGlossinessTexture", properties.specularGlossinessTexture, function (texture) {
                            babylonMaterial.reflectivityTexture = texture;
                        }));
                        babylonMaterial.reflectivityTexture.hasAlpha = true;
                        babylonMaterial.useMicroSurfaceFromReflectivityMapAlpha = true;
                    }
                    this._loader._loadMaterialAlphaProperties(context, material, babylonMaterial);
                    return Promise.all(promises).then(function () { });
                };
                return KHR_materials_pbrSpecularGlossiness;
            }(GLTF2.GLTFLoaderExtension));
            Extensions.KHR_materials_pbrSpecularGlossiness = KHR_materials_pbrSpecularGlossiness;
            GLTF2.GLTFLoader._Register(NAME, function (loader) { return new KHR_materials_pbrSpecularGlossiness(loader); });
        })(Extensions = GLTF2.Extensions || (GLTF2.Extensions = {}));
    })(GLTF2 = BABYLON.GLTF2 || (BABYLON.GLTF2 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=KHR_materials_pbrSpecularGlossiness.js.map



var BABYLON;
(function (BABYLON) {
    var GLTF2;
    (function (GLTF2) {
        var Extensions;
        (function (Extensions) {
            // https://github.com/donmccurdy/glTF/tree/feat-khr-materials-cmnConstant/extensions/2.0/Khronos/KHR_materials_unlit
            var NAME = "KHR_materials_unlit";
            var KHR_materials_unlit = /** @class */ (function (_super) {
                __extends(KHR_materials_unlit, _super);
                function KHR_materials_unlit() {
                    var _this = _super !== null && _super.apply(this, arguments) || this;
                    _this.name = NAME;
                    return _this;
                }
                KHR_materials_unlit.prototype._loadMaterialAsync = function (context, material, babylonMesh, babylonDrawMode, assign) {
                    var _this = this;
                    return this._loadExtensionAsync(context, material, function () {
                        material._babylonData = material._babylonData || {};
                        var babylonData = material._babylonData[babylonDrawMode];
                        if (!babylonData) {
                            var name_1 = material.name || "materialUnlit_" + material._index;
                            var babylonMaterial = _this._loader._createMaterial(BABYLON.PBRMaterial, name_1, babylonDrawMode);
                            babylonMaterial.unlit = true;
                            var promise = _this._loadUnlitPropertiesAsync(context, material, babylonMaterial);
                            _this._loader.onMaterialLoadedObservable.notifyObservers(babylonMaterial);
                            babylonData = {
                                material: babylonMaterial,
                                meshes: [],
                                loaded: promise
                            };
                            material._babylonData[babylonDrawMode] = babylonData;
                        }
                        babylonData.meshes.push(babylonMesh);
                        assign(babylonData.material);
                        return babylonData.loaded;
                    });
                };
                KHR_materials_unlit.prototype._loadUnlitPropertiesAsync = function (context, material, babylonMaterial) {
                    var promises = new Array();
                    // Ensure metallic workflow
                    babylonMaterial.metallic = 1;
                    babylonMaterial.roughness = 1;
                    var properties = material.pbrMetallicRoughness;
                    if (properties) {
                        if (properties.baseColorFactor) {
                            babylonMaterial.albedoColor = BABYLON.Color3.FromArray(properties.baseColorFactor);
                            babylonMaterial.alpha = properties.baseColorFactor[3];
                        }
                        else {
                            babylonMaterial.albedoColor = BABYLON.Color3.White();
                        }
                        if (properties.baseColorTexture) {
                            promises.push(this._loader._loadTextureAsync(context + "/baseColorTexture", properties.baseColorTexture, function (texture) {
                                babylonMaterial.albedoTexture = texture;
                            }));
                        }
                    }
                    if (material.doubleSided) {
                        babylonMaterial.backFaceCulling = false;
                        babylonMaterial.twoSidedLighting = true;
                    }
                    this._loader._loadMaterialAlphaProperties(context, material, babylonMaterial);
                    return Promise.all(promises).then(function () { });
                };
                return KHR_materials_unlit;
            }(GLTF2.GLTFLoaderExtension));
            Extensions.KHR_materials_unlit = KHR_materials_unlit;
            GLTF2.GLTFLoader._Register(NAME, function (loader) { return new KHR_materials_unlit(loader); });
        })(Extensions = GLTF2.Extensions || (GLTF2.Extensions = {}));
    })(GLTF2 = BABYLON.GLTF2 || (BABYLON.GLTF2 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=KHR_materials_unlit.js.map



var BABYLON;
(function (BABYLON) {
    var GLTF2;
    (function (GLTF2) {
        var Extensions;
        (function (Extensions) {
            // https://github.com/MiiBond/glTF/tree/khr_lights_v1/extensions/Khronos/KHR_lights
            var NAME = "KHR_lights";
            var LightType;
            (function (LightType) {
                LightType["AMBIENT"] = "ambient";
                LightType["DIRECTIONAL"] = "directional";
                LightType["POINT"] = "point";
                LightType["SPOT"] = "spot";
            })(LightType || (LightType = {}));
            var KHR_lights = /** @class */ (function (_super) {
                __extends(KHR_lights, _super);
                function KHR_lights() {
                    var _this = _super !== null && _super.apply(this, arguments) || this;
                    _this.name = NAME;
                    return _this;
                }
                KHR_lights.prototype._loadSceneAsync = function (context, scene) {
                    var _this = this;
                    return this._loadExtensionAsync(context, scene, function (extensionContext, extension) {
                        var promise = _this._loader._loadSceneAsync(extensionContext, scene);
                        var light = GLTF2.GLTFLoader._GetProperty(extensionContext, _this._lights, extension.light);
                        if (light.type !== LightType.AMBIENT) {
                            throw new Error(extensionContext + ": Only ambient lights are allowed on a scene");
                        }
                        _this._loader._babylonScene.ambientColor = light.color ? BABYLON.Color3.FromArray(light.color) : BABYLON.Color3.Black();
                        return promise;
                    });
                };
                KHR_lights.prototype._loadNodeAsync = function (context, node) {
                    var _this = this;
                    return this._loadExtensionAsync(context, node, function (extensionContext, extension) {
                        var promise = _this._loader._loadNodeAsync(extensionContext, node);
                        var babylonLight;
                        var light = GLTF2.GLTFLoader._GetProperty(extensionContext, _this._lights, extension.light);
                        var name = node._babylonMesh.name;
                        switch (light.type) {
                            case LightType.AMBIENT: {
                                throw new Error(extensionContext + ": Ambient lights are not allowed on a node");
                            }
                            case LightType.DIRECTIONAL: {
                                babylonLight = new BABYLON.DirectionalLight(name, BABYLON.Vector3.Forward(), _this._loader._babylonScene);
                                break;
                            }
                            case LightType.POINT: {
                                babylonLight = new BABYLON.PointLight(name, BABYLON.Vector3.Zero(), _this._loader._babylonScene);
                                break;
                            }
                            case LightType.SPOT: {
                                var spotLight = light;
                                // TODO: support inner and outer cone angles
                                //const innerConeAngle = spotLight.innerConeAngle || 0;
                                var outerConeAngle = spotLight.outerConeAngle || Math.PI / 4;
                                babylonLight = new BABYLON.SpotLight(name, BABYLON.Vector3.Zero(), BABYLON.Vector3.Forward(), outerConeAngle, 2, _this._loader._babylonScene);
                                break;
                            }
                            default: {
                                throw new Error(extensionContext + ": Invalid light type (" + light.type + ")");
                            }
                        }
                        babylonLight.diffuse = light.color ? BABYLON.Color3.FromArray(light.color) : BABYLON.Color3.White();
                        babylonLight.intensity = light.intensity == undefined ? 1 : light.intensity;
                        babylonLight.parent = node._babylonMesh;
                        return promise;
                    });
                };
                Object.defineProperty(KHR_lights.prototype, "_lights", {
                    get: function () {
                        var extensions = this._loader._gltf.extensions;
                        if (!extensions || !extensions[this.name]) {
                            throw new Error("#/extensions: '" + this.name + "' not found");
                        }
                        var extension = extensions[this.name];
                        return extension.lights;
                    },
                    enumerable: true,
                    configurable: true
                });
                return KHR_lights;
            }(GLTF2.GLTFLoaderExtension));
            Extensions.KHR_lights = KHR_lights;
            GLTF2.GLTFLoader._Register(NAME, function (loader) { return new KHR_lights(loader); });
        })(Extensions = GLTF2.Extensions || (GLTF2.Extensions = {}));
    })(GLTF2 = BABYLON.GLTF2 || (BABYLON.GLTF2 = {}));
})(BABYLON || (BABYLON = {}));

//# sourceMappingURL=KHR_lights.js.map

    

    return BABYLON;
});