/**
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* @author Rich Tibbett / https://github.com/richtr
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* @author mrdoob / http://mrdoob.com/
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* @author Tony Parisi / http://www.tonyparisi.com/
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* @author Takahiro / https://github.com/takahirox
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* @author Don McCurdy / https://www.donmccurdy.com
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*/
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THREE.GLTFLoader = (function () {
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function GLTFLoader(manager) {
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this.manager = (manager !== undefined) ? manager : THREE.DefaultLoadingManager;
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this.dracoLoader = null;
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}
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GLTFLoader.prototype = {
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constructor: GLTFLoader,
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crossOrigin: 'Anonymous',
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load: function (url, onLoad, onProgress, onError) {
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var scope = this;
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var path = this.path !== undefined ? this.path : THREE.LoaderUtils.extractUrlBase(url);
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var loader = new THREE.FileLoader(scope.manager);
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loader.setResponseType('arraybuffer');
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loader.load(url, function (data) {
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try {
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scope.parse(data, path, onLoad, onError);
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} catch (e) {
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if (onError !== undefined) {
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onError(e);
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} else {
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throw e;
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}
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}
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}, onProgress, onError);
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},
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setCrossOrigin: function (value) {
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this.crossOrigin = value;
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return this;
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},
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setPath: function (value) {
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this.path = value;
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return this;
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},
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setDRACOLoader: function (dracoLoader) {
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this.dracoLoader = dracoLoader;
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return this;
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},
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parse: function (data, path, onLoad, onError) {
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var content;
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var extensions = {};
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if (typeof data === 'string') {
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content = data;
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} else {
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var magic = THREE.LoaderUtils.decodeText(new Uint8Array(data, 0, 4));
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if (magic === BINARY_EXTENSION_HEADER_MAGIC) {
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try {
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extensions[EXTENSIONS.KHR_BINARY_GLTF] = new GLTFBinaryExtension(data);
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} catch (error) {
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if (onError) onError(error);
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return;
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}
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content = extensions[EXTENSIONS.KHR_BINARY_GLTF].content;
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} else {
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content = THREE.LoaderUtils.decodeText(new Uint8Array(data));
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}
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}
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var json = JSON.parse(content);
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if (json.asset === undefined || json.asset.version[0] < 2) {
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if (onError) onError(new Error('THREE.GLTFLoader: Unsupported asset. glTF versions >=2.0 are supported. Use LegacyGLTFLoader instead.'));
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return;
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}
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if (json.extensionsUsed) {
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for (var i = 0; i < json.extensionsUsed.length; ++i) {
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var extensionName = json.extensionsUsed[i];
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var extensionsRequired = json.extensionsRequired || [];
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switch (extensionName) {
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case EXTENSIONS.KHR_LIGHTS:
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extensions[extensionName] = new GLTFLightsExtension(json);
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break;
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case EXTENSIONS.KHR_MATERIALS_UNLIT:
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extensions[extensionName] = new GLTFMaterialsUnlitExtension(json);
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break;
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case EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS:
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extensions[extensionName] = new GLTFMaterialsPbrSpecularGlossinessExtension();
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break;
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case EXTENSIONS.KHR_DRACO_MESH_COMPRESSION:
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extensions[extensionName] = new GLTFDracoMeshCompressionExtension(json, this.dracoLoader);
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break;
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case EXTENSIONS.MSFT_TEXTURE_DDS:
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extensions[EXTENSIONS.MSFT_TEXTURE_DDS] = new GLTFTextureDDSExtension();
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break;
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default:
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if (extensionsRequired.indexOf(extensionName) >= 0) {
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console.warn('THREE.GLTFLoader: Unknown extension "' + extensionName + '".');
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}
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}
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}
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}
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var parser = new GLTFParser(json, extensions, {
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path: path || this.path || '',
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crossOrigin: this.crossOrigin,
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manager: this.manager
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});
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parser.parse(function (scene, scenes, cameras, animations, json) {
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var glTF = {
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scene: scene,
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scenes: scenes,
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cameras: cameras,
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animations: animations,
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asset: json.asset,
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parser: parser,
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userData: {}
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};
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addUnknownExtensionsToUserData(extensions, glTF, json);
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onLoad(glTF);
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}, onError);
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}
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};
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/* GLTFREGISTRY */
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function GLTFRegistry() {
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var objects = {};
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return {
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get: function (key) {
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return objects[key];
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},
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add: function (key, object) {
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objects[key] = object;
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},
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remove: function (key) {
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delete objects[key];
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},
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removeAll: function () {
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objects = {};
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}
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};
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}
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/*********************************/
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/********** EXTENSIONS ***********/
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/*********************************/
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var EXTENSIONS = {
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KHR_BINARY_GLTF: 'KHR_binary_glTF',
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KHR_DRACO_MESH_COMPRESSION: 'KHR_draco_mesh_compression',
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KHR_LIGHTS: 'KHR_lights',
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KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS: 'KHR_materials_pbrSpecularGlossiness',
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KHR_MATERIALS_UNLIT: 'KHR_materials_unlit',
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MSFT_TEXTURE_DDS: 'MSFT_texture_dds'
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};
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/**
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* DDS Texture Extension
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*
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* Specification:
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* https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/MSFT_texture_dds
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*
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*/
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function GLTFTextureDDSExtension() {
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if (!THREE.DDSLoader) {
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throw new Error('THREE.GLTFLoader: Attempting to load .dds texture without importing THREE.DDSLoader');
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}
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this.name = EXTENSIONS.MSFT_TEXTURE_DDS;
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this.ddsLoader = new THREE.DDSLoader();
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}
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/**
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* Lights Extension
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*
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* Specification: PENDING
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*/
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function GLTFLightsExtension(json) {
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this.name = EXTENSIONS.KHR_LIGHTS;
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this.lights = {};
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var extension = (json.extensions && json.extensions[EXTENSIONS.KHR_LIGHTS]) || {};
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var lights = extension.lights || {};
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for (var lightId in lights) {
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var light = lights[lightId];
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var lightNode;
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var color = new THREE.Color().fromArray(light.color);
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switch (light.type) {
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case 'directional':
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lightNode = new THREE.DirectionalLight(color);
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lightNode.target.position.set(0, 0, 1);
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lightNode.add(lightNode.target);
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break;
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case 'point':
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lightNode = new THREE.PointLight(color);
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break;
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case 'spot':
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lightNode = new THREE.SpotLight(color);
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// Handle spotlight properties.
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light.spot = light.spot || {};
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light.spot.innerConeAngle = light.spot.innerConeAngle !== undefined ? light.spot.innerConeAngle : 0;
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light.spot.outerConeAngle = light.spot.outerConeAngle !== undefined ? light.spot.outerConeAngle : Math.PI / 4.0;
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lightNode.angle = light.spot.outerConeAngle;
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lightNode.penumbra = 1.0 - light.spot.innerConeAngle / light.spot.outerConeAngle;
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lightNode.target.position.set(0, 0, 1);
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lightNode.add(lightNode.target);
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break;
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case 'ambient':
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lightNode = new THREE.AmbientLight(color);
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break;
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}
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if (lightNode) {
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lightNode.decay = 2;
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if (light.intensity !== undefined) {
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lightNode.intensity = light.intensity;
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}
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lightNode.name = light.name || ('light_' + lightId);
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this.lights[lightId] = lightNode;
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}
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}
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}
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/**
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* Unlit Materials Extension (pending)
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*
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* PR: https://github.com/KhronosGroup/glTF/pull/1163
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*/
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function GLTFMaterialsUnlitExtension(json) {
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this.name = EXTENSIONS.KHR_MATERIALS_UNLIT;
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}
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GLTFMaterialsUnlitExtension.prototype.getMaterialType = function (material) {
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return THREE.MeshBasicMaterial;
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};
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GLTFMaterialsUnlitExtension.prototype.extendParams = function (materialParams, material, parser) {
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var pending = [];
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materialParams.color = new THREE.Color(1.0, 1.0, 1.0);
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materialParams.opacity = 1.0;
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var metallicRoughness = material.pbrMetallicRoughness;
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if (metallicRoughness) {
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if (Array.isArray(metallicRoughness.baseColorFactor)) {
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var array = metallicRoughness.baseColorFactor;
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materialParams.color.fromArray(array);
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materialParams.opacity = array[3];
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}
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if (metallicRoughness.baseColorTexture !== undefined) {
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pending.push(parser.assignTexture(materialParams, 'map', metallicRoughness.baseColorTexture.index));
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}
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}
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return Promise.all(pending);
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};
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/* BINARY EXTENSION */
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var BINARY_EXTENSION_BUFFER_NAME = 'binary_glTF';
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var BINARY_EXTENSION_HEADER_MAGIC = 'glTF';
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var BINARY_EXTENSION_HEADER_LENGTH = 12;
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var BINARY_EXTENSION_CHUNK_TYPES = { JSON: 0x4E4F534A, BIN: 0x004E4942 };
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function GLTFBinaryExtension(data) {
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this.name = EXTENSIONS.KHR_BINARY_GLTF;
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this.content = null;
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this.body = null;
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var headerView = new DataView(data, 0, BINARY_EXTENSION_HEADER_LENGTH);
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this.header = {
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magic: THREE.LoaderUtils.decodeText(new Uint8Array(data.slice(0, 4))),
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version: headerView.getUint32(4, true),
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length: headerView.getUint32(8, true)
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};
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if (this.header.magic !== BINARY_EXTENSION_HEADER_MAGIC) {
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throw new Error('THREE.GLTFLoader: Unsupported glTF-Binary header.');
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} else if (this.header.version < 2.0) {
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throw new Error('THREE.GLTFLoader: Legacy binary file detected. Use LegacyGLTFLoader instead.');
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}
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var chunkView = new DataView(data, BINARY_EXTENSION_HEADER_LENGTH);
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var chunkIndex = 0;
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while (chunkIndex < chunkView.byteLength) {
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var chunkLength = chunkView.getUint32(chunkIndex, true);
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chunkIndex += 4;
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var chunkType = chunkView.getUint32(chunkIndex, true);
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chunkIndex += 4;
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if (chunkType === BINARY_EXTENSION_CHUNK_TYPES.JSON) {
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var contentArray = new Uint8Array(data, BINARY_EXTENSION_HEADER_LENGTH + chunkIndex, chunkLength);
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this.content = THREE.LoaderUtils.decodeText(contentArray);
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} else if (chunkType === BINARY_EXTENSION_CHUNK_TYPES.BIN) {
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var byteOffset = BINARY_EXTENSION_HEADER_LENGTH + chunkIndex;
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this.body = data.slice(byteOffset, byteOffset + chunkLength);
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}
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// Clients must ignore chunks with unknown types.
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chunkIndex += chunkLength;
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}
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if (this.content === null) {
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throw new Error('THREE.GLTFLoader: JSON content not found.');
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}
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}
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/**
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* DRACO Mesh Compression Extension
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*
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* Specification: https://github.com/KhronosGroup/glTF/pull/874
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*/
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function GLTFDracoMeshCompressionExtension(json, dracoLoader) {
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if (!dracoLoader) {
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throw new Error('THREE.GLTFLoader: No DRACOLoader instance provided.');
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}
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this.name = EXTENSIONS.KHR_DRACO_MESH_COMPRESSION;
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this.json = json;
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this.dracoLoader = dracoLoader;
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}
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GLTFDracoMeshCompressionExtension.prototype.decodePrimitive = function (primitive, parser) {
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var json = this.json;
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var dracoLoader = this.dracoLoader;
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var bufferViewIndex = primitive.extensions[this.name].bufferView;
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var gltfAttributeMap = primitive.extensions[this.name].attributes;
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var threeAttributeMap = {};
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var attributeNormalizedMap = {};
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var attributeTypeMap = {};
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for (var attributeName in gltfAttributeMap) {
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if (!(attributeName in ATTRIBUTES)) continue;
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threeAttributeMap[ATTRIBUTES[attributeName]] = gltfAttributeMap[attributeName];
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}
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for (attributeName in primitive.attributes) {
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if (ATTRIBUTES[attributeName] !== undefined && gltfAttributeMap[attributeName] !== undefined) {
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var accessorDef = json.accessors[primitive.attributes[attributeName]];
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var componentType = WEBGL_COMPONENT_TYPES[accessorDef.componentType];
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attributeTypeMap[ATTRIBUTES[attributeName]] = componentType;
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attributeNormalizedMap[ATTRIBUTES[attributeName]] = accessorDef.normalized === true;
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}
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}
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return parser.getDependency('bufferView', bufferViewIndex).then(function (bufferView) {
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return new Promise(function (resolve) {
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dracoLoader.decodeDracoFile(bufferView, function (geometry) {
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for (var attributeName in geometry.attributes) {
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var attribute = geometry.attributes[attributeName];
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var normalized = attributeNormalizedMap[attributeName];
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if (normalized !== undefined) attribute.normalized = normalized;
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}
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resolve(geometry);
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}, threeAttributeMap, attributeTypeMap);
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});
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});
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};
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/**
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* Specular-Glossiness Extension
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*
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* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness
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*/
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function GLTFMaterialsPbrSpecularGlossinessExtension() {
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return {
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name: EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS,
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specularGlossinessParams: [
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'color',
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'map',
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'lightMap',
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'lightMapIntensity',
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'aoMap',
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'aoMapIntensity',
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'emissive',
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'emissiveIntensity',
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'emissiveMap',
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'bumpMap',
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'bumpScale',
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'normalMap',
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'displacementMap',
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'displacementScale',
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'displacementBias',
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'specularMap',
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'specular',
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'glossinessMap',
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'glossiness',
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'alphaMap',
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'envMap',
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'envMapIntensity',
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'refractionRatio',
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],
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getMaterialType: function () {
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return THREE.ShaderMaterial;
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},
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extendParams: function (params, material, parser) {
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var pbrSpecularGlossiness = material.extensions[this.name];
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var shader = THREE.ShaderLib['standard'];
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var uniforms = THREE.UniformsUtils.clone(shader.uniforms);
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var specularMapParsFragmentChunk = [
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'#ifdef USE_SPECULARMAP',
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' uniform sampler2D specularMap;',
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'#endif'
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].join('\n');
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var glossinessMapParsFragmentChunk = [
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'#ifdef USE_GLOSSINESSMAP',
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' uniform sampler2D glossinessMap;',
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'#endif'
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].join('\n');
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var specularMapFragmentChunk = [
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'vec3 specularFactor = specular;',
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'#ifdef USE_SPECULARMAP',
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' vec4 texelSpecular = texture2D( specularMap, vUv );',
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' texelSpecular = sRGBToLinear( texelSpecular );',
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' // reads channel RGB, compatible with a glTF Specular-Glossiness (RGBA) texture',
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' specularFactor *= texelSpecular.rgb;',
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'#endif'
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].join('\n');
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var glossinessMapFragmentChunk = [
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'float glossinessFactor = glossiness;',
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'#ifdef USE_GLOSSINESSMAP',
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' vec4 texelGlossiness = texture2D( glossinessMap, vUv );',
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' // reads channel A, compatible with a glTF Specular-Glossiness (RGBA) texture',
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' glossinessFactor *= texelGlossiness.a;',
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'#endif'
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].join('\n');
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var lightPhysicalFragmentChunk = [
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'PhysicalMaterial material;',
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'material.diffuseColor = diffuseColor.rgb;',
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'material.specularRoughness = clamp( 1.0 - glossinessFactor, 0.04, 1.0 );',
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'material.specularColor = specularFactor.rgb;',
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].join('\n');
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var fragmentShader = shader.fragmentShader
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.replace('uniform float roughness;', 'uniform vec3 specular;')
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.replace('uniform float metalness;', 'uniform float glossiness;')
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.replace('#include <roughnessmap_pars_fragment>', specularMapParsFragmentChunk)
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.replace('#include <metalnessmap_pars_fragment>', glossinessMapParsFragmentChunk)
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.replace('#include <roughnessmap_fragment>', specularMapFragmentChunk)
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.replace('#include <metalnessmap_fragment>', glossinessMapFragmentChunk)
|
.replace('#include <lights_physical_fragment>', lightPhysicalFragmentChunk);
|
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delete uniforms.roughness;
|
delete uniforms.metalness;
|
delete uniforms.roughnessMap;
|
delete uniforms.metalnessMap;
|
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uniforms.specular = { value: new THREE.Color().setHex(0x111111) };
|
uniforms.glossiness = { value: 0.5 };
|
uniforms.specularMap = { value: null };
|
uniforms.glossinessMap = { value: null };
|
|
params.vertexShader = shader.vertexShader;
|
params.fragmentShader = fragmentShader;
|
params.uniforms = uniforms;
|
params.defines = { 'STANDARD': '' };
|
|
params.color = new THREE.Color(1.0, 1.0, 1.0);
|
params.opacity = 1.0;
|
|
var pending = [];
|
|
if (Array.isArray(pbrSpecularGlossiness.diffuseFactor)) {
|
|
var array = pbrSpecularGlossiness.diffuseFactor;
|
|
params.color.fromArray(array);
|
params.opacity = array[3];
|
|
}
|
|
if (pbrSpecularGlossiness.diffuseTexture !== undefined) {
|
|
pending.push(parser.assignTexture(params, 'map', pbrSpecularGlossiness.diffuseTexture.index));
|
|
}
|
|
params.emissive = new THREE.Color(0.0, 0.0, 0.0);
|
params.glossiness = pbrSpecularGlossiness.glossinessFactor !== undefined ? pbrSpecularGlossiness.glossinessFactor : 1.0;
|
params.specular = new THREE.Color(1.0, 1.0, 1.0);
|
|
if (Array.isArray(pbrSpecularGlossiness.specularFactor)) {
|
|
params.specular.fromArray(pbrSpecularGlossiness.specularFactor);
|
|
}
|
|
if (pbrSpecularGlossiness.specularGlossinessTexture !== undefined) {
|
|
var specGlossIndex = pbrSpecularGlossiness.specularGlossinessTexture.index;
|
pending.push(parser.assignTexture(params, 'glossinessMap', specGlossIndex));
|
pending.push(parser.assignTexture(params, 'specularMap', specGlossIndex));
|
|
}
|
|
return Promise.all(pending);
|
|
},
|
|
createMaterial: function (params) {
|
|
// setup material properties based on MeshStandardMaterial for Specular-Glossiness
|
|
var material = new THREE.ShaderMaterial({
|
defines: params.defines,
|
vertexShader: params.vertexShader,
|
fragmentShader: params.fragmentShader,
|
uniforms: params.uniforms,
|
fog: true,
|
lights: true,
|
opacity: params.opacity,
|
transparent: params.transparent
|
});
|
|
material.isGLTFSpecularGlossinessMaterial = true;
|
|
material.color = params.color;
|
|
material.map = params.map === undefined ? null : params.map;
|
|
material.lightMap = null;
|
material.lightMapIntensity = 1.0;
|
|
material.aoMap = params.aoMap === undefined ? null : params.aoMap;
|
material.aoMapIntensity = 1.0;
|
|
material.emissive = params.emissive;
|
material.emissiveIntensity = 1.0;
|
material.emissiveMap = params.emissiveMap === undefined ? null : params.emissiveMap;
|
|
material.bumpMap = params.bumpMap === undefined ? null : params.bumpMap;
|
material.bumpScale = 1;
|
|
material.normalMap = params.normalMap === undefined ? null : params.normalMap;
|
if (params.normalScale) material.normalScale = params.normalScale;
|
|
material.displacementMap = null;
|
material.displacementScale = 1;
|
material.displacementBias = 0;
|
|
material.specularMap = params.specularMap === undefined ? null : params.specularMap;
|
material.specular = params.specular;
|
|
material.glossinessMap = params.glossinessMap === undefined ? null : params.glossinessMap;
|
material.glossiness = params.glossiness;
|
|
material.alphaMap = null;
|
|
material.envMap = params.envMap === undefined ? null : params.envMap;
|
material.envMapIntensity = 1.0;
|
|
material.refractionRatio = 0.98;
|
|
material.extensions.derivatives = true;
|
|
return material;
|
|
},
|
|
/**
|
* Clones a GLTFSpecularGlossinessMaterial instance. The ShaderMaterial.copy() method can
|
* copy only properties it knows about or inherits, and misses many properties that would
|
* normally be defined by MeshStandardMaterial.
|
*
|
* This method allows GLTFSpecularGlossinessMaterials to be cloned in the process of
|
* loading a glTF model, but cloning later (e.g. by the user) would require these changes
|
* AND also updating `.onBeforeRender` on the parent mesh.
|
*
|
* @param {THREE.ShaderMaterial} source
|
* @return {THREE.ShaderMaterial}
|
*/
|
cloneMaterial: function (source) {
|
|
var target = source.clone();
|
|
target.isGLTFSpecularGlossinessMaterial = true;
|
|
var params = this.specularGlossinessParams;
|
|
for (var i = 0, il = params.length; i < il; i++) {
|
|
target[params[i]] = source[params[i]];
|
|
}
|
|
return target;
|
|
},
|
|
// Here's based on refreshUniformsCommon() and refreshUniformsStandard() in WebGLRenderer.
|
refreshUniforms: function (renderer, scene, camera, geometry, material, group) {
|
|
if (material.isGLTFSpecularGlossinessMaterial !== true) {
|
|
return;
|
|
}
|
|
var uniforms = material.uniforms;
|
var defines = material.defines;
|
|
uniforms.opacity.value = material.opacity;
|
|
uniforms.diffuse.value.copy(material.color);
|
uniforms.emissive.value.copy(material.emissive).multiplyScalar(material.emissiveIntensity);
|
|
uniforms.map.value = material.map;
|
uniforms.specularMap.value = material.specularMap;
|
uniforms.alphaMap.value = material.alphaMap;
|
|
uniforms.lightMap.value = material.lightMap;
|
uniforms.lightMapIntensity.value = material.lightMapIntensity;
|
|
uniforms.aoMap.value = material.aoMap;
|
uniforms.aoMapIntensity.value = material.aoMapIntensity;
|
|
// uv repeat and offset setting priorities
|
// 1. color map
|
// 2. specular map
|
// 3. normal map
|
// 4. bump map
|
// 5. alpha map
|
// 6. emissive map
|
|
var uvScaleMap;
|
|
if (material.map) {
|
|
uvScaleMap = material.map;
|
|
} else if (material.specularMap) {
|
|
uvScaleMap = material.specularMap;
|
|
} else if (material.displacementMap) {
|
|
uvScaleMap = material.displacementMap;
|
|
} else if (material.normalMap) {
|
|
uvScaleMap = material.normalMap;
|
|
} else if (material.bumpMap) {
|
|
uvScaleMap = material.bumpMap;
|
|
} else if (material.glossinessMap) {
|
|
uvScaleMap = material.glossinessMap;
|
|
} else if (material.alphaMap) {
|
|
uvScaleMap = material.alphaMap;
|
|
} else if (material.emissiveMap) {
|
|
uvScaleMap = material.emissiveMap;
|
|
}
|
|
if (uvScaleMap !== undefined) {
|
|
// backwards compatibility
|
if (uvScaleMap.isWebGLRenderTarget) {
|
|
uvScaleMap = uvScaleMap.texture;
|
|
}
|
|
var offset;
|
var repeat;
|
|
if (uvScaleMap.matrix !== undefined) {
|
|
// > r88.
|
|
if (uvScaleMap.matrixAutoUpdate === true) {
|
|
offset = uvScaleMap.offset;
|
repeat = uvScaleMap.repeat;
|
var rotation = uvScaleMap.rotation;
|
var center = uvScaleMap.center;
|
|
uvScaleMap.matrix.setUvTransform(offset.x, offset.y, repeat.x, repeat.y, rotation, center.x, center.y);
|
|
}
|
|
uniforms.uvTransform.value.copy(uvScaleMap.matrix);
|
|
} else {
|
|
// <= r87. Remove when reasonable.
|
|
offset = uvScaleMap.offset;
|
repeat = uvScaleMap.repeat;
|
|
uniforms.offsetRepeat.value.set(offset.x, offset.y, repeat.x, repeat.y);
|
|
}
|
|
}
|
|
uniforms.envMap.value = material.envMap;
|
uniforms.envMapIntensity.value = material.envMapIntensity;
|
uniforms.flipEnvMap.value = (material.envMap && material.envMap.isCubeTexture) ? -1 : 1;
|
|
uniforms.refractionRatio.value = material.refractionRatio;
|
|
uniforms.specular.value.copy(material.specular);
|
uniforms.glossiness.value = material.glossiness;
|
|
uniforms.glossinessMap.value = material.glossinessMap;
|
|
uniforms.emissiveMap.value = material.emissiveMap;
|
uniforms.bumpMap.value = material.bumpMap;
|
uniforms.normalMap.value = material.normalMap;
|
|
uniforms.displacementMap.value = material.displacementMap;
|
uniforms.displacementScale.value = material.displacementScale;
|
uniforms.displacementBias.value = material.displacementBias;
|
|
if (uniforms.glossinessMap.value !== null && defines.USE_GLOSSINESSMAP === undefined) {
|
|
defines.USE_GLOSSINESSMAP = '';
|
// set USE_ROUGHNESSMAP to enable vUv
|
defines.USE_ROUGHNESSMAP = '';
|
|
}
|
|
if (uniforms.glossinessMap.value === null && defines.USE_GLOSSINESSMAP !== undefined) {
|
|
delete defines.USE_GLOSSINESSMAP;
|
delete defines.USE_ROUGHNESSMAP;
|
|
}
|
|
}
|
|
};
|
|
}
|
|
/*********************************/
|
/********** INTERPOLATION ********/
|
/*********************************/
|
|
// Spline Interpolation
|
// Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#appendix-c-spline-interpolation
|
function GLTFCubicSplineInterpolant(parameterPositions, sampleValues, sampleSize, resultBuffer) {
|
|
THREE.Interpolant.call(this, parameterPositions, sampleValues, sampleSize, resultBuffer);
|
|
};
|
|
GLTFCubicSplineInterpolant.prototype = Object.create(THREE.Interpolant.prototype);
|
GLTFCubicSplineInterpolant.prototype.constructor = GLTFCubicSplineInterpolant;
|
|
GLTFCubicSplineInterpolant.prototype.interpolate_ = function (i1, t0, t, t1) {
|
|
var result = this.resultBuffer;
|
var values = this.sampleValues;
|
var stride = this.valueSize;
|
|
var stride2 = stride * 2;
|
var stride3 = stride * 3;
|
|
var td = t1 - t0;
|
|
var p = (t - t0) / td;
|
var pp = p * p;
|
var ppp = pp * p;
|
|
var offset1 = i1 * stride3;
|
var offset0 = offset1 - stride3;
|
|
var s0 = 2 * ppp - 3 * pp + 1;
|
var s1 = ppp - 2 * pp + p;
|
var s2 = -2 * ppp + 3 * pp;
|
var s3 = ppp - pp;
|
|
// Layout of keyframe output values for CUBICSPLINE animations:
|
// [ inTangent_1, splineVertex_1, outTangent_1, inTangent_2, splineVertex_2, ... ]
|
for (var i = 0; i !== stride; i++) {
|
|
var p0 = values[offset0 + i + stride]; // splineVertex_k
|
var m0 = values[offset0 + i + stride2] * td; // outTangent_k * (t_k+1 - t_k)
|
var p1 = values[offset1 + i + stride]; // splineVertex_k+1
|
var m1 = values[offset1 + i] * td; // inTangent_k+1 * (t_k+1 - t_k)
|
|
result[i] = s0 * p0 + s1 * m0 + s2 * p1 + s3 * m1;
|
|
}
|
|
return result;
|
|
};
|
|
/*********************************/
|
/********** INTERNALS ************/
|
/*********************************/
|
|
/* CONSTANTS */
|
|
var WEBGL_CONSTANTS = {
|
FLOAT: 5126,
|
//FLOAT_MAT2: 35674,
|
FLOAT_MAT3: 35675,
|
FLOAT_MAT4: 35676,
|
FLOAT_VEC2: 35664,
|
FLOAT_VEC3: 35665,
|
FLOAT_VEC4: 35666,
|
LINEAR: 9729,
|
REPEAT: 10497,
|
SAMPLER_2D: 35678,
|
POINTS: 0,
|
LINES: 1,
|
LINE_LOOP: 2,
|
LINE_STRIP: 3,
|
TRIANGLES: 4,
|
TRIANGLE_STRIP: 5,
|
TRIANGLE_FAN: 6,
|
UNSIGNED_BYTE: 5121,
|
UNSIGNED_SHORT: 5123
|
};
|
|
var WEBGL_TYPE = {
|
5126: Number,
|
//35674: THREE.Matrix2,
|
35675: THREE.Matrix3,
|
35676: THREE.Matrix4,
|
35664: THREE.Vector2,
|
35665: THREE.Vector3,
|
35666: THREE.Vector4,
|
35678: THREE.Texture
|
};
|
|
var WEBGL_COMPONENT_TYPES = {
|
5120: Int8Array,
|
5121: Uint8Array,
|
5122: Int16Array,
|
5123: Uint16Array,
|
5125: Uint32Array,
|
5126: Float32Array
|
};
|
|
var WEBGL_FILTERS = {
|
9728: THREE.NearestFilter,
|
9729: THREE.LinearFilter,
|
9984: THREE.NearestMipMapNearestFilter,
|
9985: THREE.LinearMipMapNearestFilter,
|
9986: THREE.NearestMipMapLinearFilter,
|
9987: THREE.LinearMipMapLinearFilter
|
};
|
|
var WEBGL_WRAPPINGS = {
|
33071: THREE.ClampToEdgeWrapping,
|
33648: THREE.MirroredRepeatWrapping,
|
10497: THREE.RepeatWrapping
|
};
|
|
var WEBGL_TEXTURE_FORMATS = {
|
6406: THREE.AlphaFormat,
|
6407: THREE.RGBFormat,
|
6408: THREE.RGBAFormat,
|
6409: THREE.LuminanceFormat,
|
6410: THREE.LuminanceAlphaFormat
|
};
|
|
var WEBGL_TEXTURE_DATATYPES = {
|
5121: THREE.UnsignedByteType,
|
32819: THREE.UnsignedShort4444Type,
|
32820: THREE.UnsignedShort5551Type,
|
33635: THREE.UnsignedShort565Type
|
};
|
|
var WEBGL_SIDES = {
|
1028: THREE.BackSide, // Culling front
|
1029: THREE.FrontSide // Culling back
|
//1032: THREE.NoSide // Culling front and back, what to do?
|
};
|
|
var WEBGL_DEPTH_FUNCS = {
|
512: THREE.NeverDepth,
|
513: THREE.LessDepth,
|
514: THREE.EqualDepth,
|
515: THREE.LessEqualDepth,
|
516: THREE.GreaterEqualDepth,
|
517: THREE.NotEqualDepth,
|
518: THREE.GreaterEqualDepth,
|
519: THREE.AlwaysDepth
|
};
|
|
var WEBGL_BLEND_EQUATIONS = {
|
32774: THREE.AddEquation,
|
32778: THREE.SubtractEquation,
|
32779: THREE.ReverseSubtractEquation
|
};
|
|
var WEBGL_BLEND_FUNCS = {
|
0: THREE.ZeroFactor,
|
1: THREE.OneFactor,
|
768: THREE.SrcColorFactor,
|
769: THREE.OneMinusSrcColorFactor,
|
770: THREE.SrcAlphaFactor,
|
771: THREE.OneMinusSrcAlphaFactor,
|
772: THREE.DstAlphaFactor,
|
773: THREE.OneMinusDstAlphaFactor,
|
774: THREE.DstColorFactor,
|
775: THREE.OneMinusDstColorFactor,
|
776: THREE.SrcAlphaSaturateFactor
|
// The followings are not supported by Three.js yet
|
//32769: CONSTANT_COLOR,
|
//32770: ONE_MINUS_CONSTANT_COLOR,
|
//32771: CONSTANT_ALPHA,
|
//32772: ONE_MINUS_CONSTANT_COLOR
|
};
|
|
var WEBGL_TYPE_SIZES = {
|
'SCALAR': 1,
|
'VEC2': 2,
|
'VEC3': 3,
|
'VEC4': 4,
|
'MAT2': 4,
|
'MAT3': 9,
|
'MAT4': 16
|
};
|
|
var ATTRIBUTES = {
|
POSITION: 'position',
|
NORMAL: 'normal',
|
TEXCOORD_0: 'uv',
|
TEXCOORD0: 'uv', // deprecated
|
TEXCOORD: 'uv', // deprecated
|
TEXCOORD_1: 'uv2',
|
COLOR_0: 'color',
|
COLOR0: 'color', // deprecated
|
COLOR: 'color', // deprecated
|
WEIGHTS_0: 'skinWeight',
|
WEIGHT: 'skinWeight', // deprecated
|
JOINTS_0: 'skinIndex',
|
JOINT: 'skinIndex' // deprecated
|
}
|
|
var PATH_PROPERTIES = {
|
scale: 'scale',
|
translation: 'position',
|
rotation: 'quaternion',
|
weights: 'morphTargetInfluences'
|
};
|
|
var INTERPOLATION = {
|
CUBICSPLINE: THREE.InterpolateSmooth, // We use custom interpolation GLTFCubicSplineInterpolation for CUBICSPLINE.
|
// KeyframeTrack.optimize() can't handle glTF Cubic Spline output values layout,
|
// using THREE.InterpolateSmooth for KeyframeTrack instantiation to prevent optimization.
|
// See KeyframeTrack.optimize() for the detail.
|
LINEAR: THREE.InterpolateLinear,
|
STEP: THREE.InterpolateDiscrete
|
};
|
|
var STATES_ENABLES = {
|
2884: 'CULL_FACE',
|
2929: 'DEPTH_TEST',
|
3042: 'BLEND',
|
3089: 'SCISSOR_TEST',
|
32823: 'POLYGON_OFFSET_FILL',
|
32926: 'SAMPLE_ALPHA_TO_COVERAGE'
|
};
|
|
var ALPHA_MODES = {
|
OPAQUE: 'OPAQUE',
|
MASK: 'MASK',
|
BLEND: 'BLEND'
|
};
|
|
/* UTILITY FUNCTIONS */
|
|
function resolveURL(url, path) {
|
|
// Invalid URL
|
if (typeof url !== 'string' || url === '') return '';
|
|
// Absolute URL http://,https://,//
|
if (/^(https?:)?\/\//i.test(url)) return url;
|
|
// Data URI
|
if (/^data:.*,.*$/i.test(url)) return url;
|
|
// Blob URL
|
if (/^blob:.*$/i.test(url)) return url;
|
|
// Relative URL
|
return path + url;
|
|
}
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#default-material
|
*/
|
function createDefaultMaterial() {
|
|
return new THREE.MeshStandardMaterial({
|
color: 0xFFFFFF,
|
emissive: 0x000000,
|
metalness: 1,
|
roughness: 1,
|
transparent: false,
|
depthTest: true,
|
side: THREE.FrontSide
|
});
|
|
}
|
|
function addUnknownExtensionsToUserData(knownExtensions, object, objectDef) {
|
|
// Add unknown glTF extensions to an object's userData.
|
|
for (var name in objectDef.extensions) {
|
|
if (knownExtensions[name] === undefined) {
|
|
object.userData.gltfExtensions = object.userData.gltfExtensions || {};
|
object.userData.gltfExtensions[name] = objectDef.extensions[name];
|
|
}
|
|
}
|
|
}
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#morph-targets
|
*
|
* @param {THREE.Geometry} geometry
|
* @param {Array<GLTF.Target>} targets
|
* @param {Array<THREE.BufferAttribute>} accessors
|
*/
|
function addMorphTargets(geometry, targets, accessors) {
|
|
var hasMorphPosition = false;
|
var hasMorphNormal = false;
|
|
for (var i = 0, il = targets.length; i < il; i++) {
|
|
var target = targets[i];
|
|
if (target.POSITION !== undefined) hasMorphPosition = true;
|
if (target.NORMAL !== undefined) hasMorphNormal = true;
|
|
if (hasMorphPosition && hasMorphNormal) break;
|
|
}
|
|
if (!hasMorphPosition && !hasMorphNormal) return;
|
|
var morphPositions = [];
|
var morphNormals = [];
|
|
for (var i = 0, il = targets.length; i < il; i++) {
|
|
var target = targets[i];
|
var attributeName = 'morphTarget' + i;
|
|
if (hasMorphPosition) {
|
|
// Three.js morph position is absolute value. The formula is
|
// basePosition
|
// + weight0 * ( morphPosition0 - basePosition )
|
// + weight1 * ( morphPosition1 - basePosition )
|
// ...
|
// while the glTF one is relative
|
// basePosition
|
// + weight0 * glTFmorphPosition0
|
// + weight1 * glTFmorphPosition1
|
// ...
|
// then we need to convert from relative to absolute here.
|
|
if (target.POSITION !== undefined) {
|
|
// Cloning not to pollute original accessor
|
var positionAttribute = cloneBufferAttribute(accessors[target.POSITION]);
|
positionAttribute.name = attributeName;
|
|
var position = geometry.attributes.position;
|
|
for (var j = 0, jl = positionAttribute.count; j < jl; j++) {
|
|
positionAttribute.setXYZ(
|
j,
|
positionAttribute.getX(j) + position.getX(j),
|
positionAttribute.getY(j) + position.getY(j),
|
positionAttribute.getZ(j) + position.getZ(j)
|
);
|
|
}
|
|
} else {
|
|
positionAttribute = geometry.attributes.position;
|
|
}
|
|
morphPositions.push(positionAttribute);
|
|
}
|
|
if (hasMorphNormal) {
|
|
// see target.POSITION's comment
|
|
var normalAttribute;
|
|
if (target.NORMAL !== undefined) {
|
|
var normalAttribute = cloneBufferAttribute(accessors[target.NORMAL]);
|
normalAttribute.name = attributeName;
|
|
var normal = geometry.attributes.normal;
|
|
for (var j = 0, jl = normalAttribute.count; j < jl; j++) {
|
|
normalAttribute.setXYZ(
|
j,
|
normalAttribute.getX(j) + normal.getX(j),
|
normalAttribute.getY(j) + normal.getY(j),
|
normalAttribute.getZ(j) + normal.getZ(j)
|
);
|
|
}
|
|
} else {
|
|
normalAttribute = geometry.attributes.normal;
|
|
}
|
|
morphNormals.push(normalAttribute);
|
|
}
|
|
}
|
|
if (hasMorphPosition) geometry.morphAttributes.position = morphPositions;
|
if (hasMorphNormal) geometry.morphAttributes.normal = morphNormals;
|
|
}
|
|
/**
|
* @param {THREE.Mesh} mesh
|
* @param {GLTF.Mesh} meshDef
|
*/
|
function updateMorphTargets(mesh, meshDef) {
|
|
mesh.updateMorphTargets();
|
|
if (meshDef.weights !== undefined) {
|
|
for (var i = 0, il = meshDef.weights.length; i < il; i++) {
|
|
mesh.morphTargetInfluences[i] = meshDef.weights[i];
|
|
}
|
|
}
|
|
// .extras has user-defined data, so check that .extras.targetNames is an array.
|
if (meshDef.extras && Array.isArray(meshDef.extras.targetNames)) {
|
|
var targetNames = meshDef.extras.targetNames;
|
|
if (mesh.morphTargetInfluences.length === targetNames.length) {
|
|
mesh.morphTargetDictionary = {};
|
|
for (var i = 0, il = targetNames.length; i < il; i++) {
|
|
mesh.morphTargetDictionary[targetNames[i]] = i;
|
|
}
|
|
} else {
|
|
console.warn('THREE.GLTFLoader: Invalid extras.targetNames length. Ignoring names.');
|
|
}
|
|
}
|
|
}
|
|
function isPrimitiveEqual(a, b) {
|
|
if (a.indices !== b.indices) {
|
|
return false;
|
|
}
|
|
return isObjectEqual(a.attributes, b.attributes);
|
|
}
|
|
function isObjectEqual(a, b) {
|
|
if (Object.keys(a).length !== Object.keys(b).length) return false;
|
|
for (var key in a) {
|
|
if (a[key] !== b[key]) return false;
|
|
}
|
|
return true;
|
|
}
|
|
function isArrayEqual(a, b) {
|
|
if (a.length !== b.length) return false;
|
|
for (var i = 0, il = a.length; i < il; i++) {
|
|
if (a[i] !== b[i]) return false;
|
|
}
|
|
return true;
|
|
}
|
|
function getCachedGeometry(cache, newPrimitive) {
|
|
for (var i = 0, il = cache.length; i < il; i++) {
|
|
var cached = cache[i];
|
|
if (isPrimitiveEqual(cached.primitive, newPrimitive)) return cached.promise;
|
|
}
|
|
return null;
|
|
}
|
|
function getCachedCombinedGeometry(cache, geometries) {
|
|
for (var i = 0, il = cache.length; i < il; i++) {
|
|
var cached = cache[i];
|
|
if (isArrayEqual(geometries, cached.baseGeometries)) return cached.geometry;
|
|
}
|
|
return null;
|
|
}
|
|
function getCachedMultiPassGeometry(cache, geometry, primitives) {
|
|
for (var i = 0, il = cache.length; i < il; i++) {
|
|
var cached = cache[i];
|
|
if (geometry === cached.baseGeometry && isArrayEqual(primitives, cached.primitives)) return cached.geometry;
|
|
}
|
|
return null;
|
|
}
|
|
function cloneBufferAttribute(attribute) {
|
|
if (attribute.isInterleavedBufferAttribute) {
|
|
var count = attribute.count;
|
var itemSize = attribute.itemSize;
|
var array = attribute.array.slice(0, count * itemSize);
|
|
for (var i = 0; i < count; ++i) {
|
|
array[i] = attribute.getX(i);
|
if (itemSize >= 2) array[i + 1] = attribute.getY(i);
|
if (itemSize >= 3) array[i + 2] = attribute.getZ(i);
|
if (itemSize >= 4) array[i + 3] = attribute.getW(i);
|
|
}
|
|
return new THREE.BufferAttribute(array, itemSize, attribute.normalized);
|
|
}
|
|
return attribute.clone();
|
|
}
|
|
/**
|
* Checks if we can build a single Mesh with MultiMaterial from multiple primitives.
|
* Returns true if all primitives use the same attributes/morphAttributes/mode
|
* and also have index. Otherwise returns false.
|
*
|
* @param {Array<GLTF.Primitive>} primitives
|
* @return {Boolean}
|
*/
|
function isMultiPassGeometry(primitives) {
|
|
if (primitives.length < 2) return false;
|
|
var primitive0 = primitives[0];
|
var targets0 = primitive0.targets || [];
|
|
if (primitive0.indices === undefined) return false;
|
|
for (var i = 1, il = primitives.length; i < il; i++) {
|
|
var primitive = primitives[i];
|
|
if (primitive0.mode !== primitive.mode) return false;
|
if (primitive.indices === undefined) return false;
|
if (!isObjectEqual(primitive0.attributes, primitive.attributes)) return false;
|
|
var targets = primitive.targets || [];
|
|
if (targets0.length !== targets.length) return false;
|
|
for (var j = 0, jl = targets0.length; j < jl; j++) {
|
|
if (!isObjectEqual(targets0[j], targets[j])) return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
/* GLTF PARSER */
|
|
function GLTFParser(json, extensions, options) {
|
|
this.json = json || {};
|
this.extensions = extensions || {};
|
this.options = options || {};
|
|
// loader object cache
|
this.cache = new GLTFRegistry();
|
|
// BufferGeometry caching
|
this.primitiveCache = [];
|
this.multiplePrimitivesCache = [];
|
this.multiPassGeometryCache = []
|
|
this.textureLoader = new THREE.TextureLoader(this.options.manager);
|
this.textureLoader.setCrossOrigin(this.options.crossOrigin);
|
|
this.fileLoader = new THREE.FileLoader(this.options.manager);
|
this.fileLoader.setResponseType('arraybuffer');
|
|
}
|
|
GLTFParser.prototype.parse = function (onLoad, onError) {
|
|
var json = this.json;
|
|
// Clear the loader cache
|
this.cache.removeAll();
|
|
// Mark the special nodes/meshes in json for efficient parse
|
this.markDefs();
|
|
// Fire the callback on complete
|
this.getMultiDependencies([
|
|
'scene',
|
'animation',
|
'camera'
|
|
]).then(function (dependencies) {
|
|
var scenes = dependencies.scenes || [];
|
var scene = scenes[json.scene || 0];
|
var animations = dependencies.animations || [];
|
var cameras = dependencies.cameras || [];
|
|
onLoad(scene, scenes, cameras, animations, json);
|
|
}).catch(onError);
|
|
};
|
|
/**
|
* Marks the special nodes/meshes in json for efficient parse.
|
*/
|
GLTFParser.prototype.markDefs = function () {
|
|
var nodeDefs = this.json.nodes || [];
|
var skinDefs = this.json.skins || [];
|
var meshDefs = this.json.meshes || [];
|
|
var meshReferences = {};
|
var meshUses = {};
|
|
// Nothing in the node definition indicates whether it is a Bone or an
|
// Object3D. Use the skins' joint references to mark bones.
|
for (var skinIndex = 0, skinLength = skinDefs.length; skinIndex < skinLength; skinIndex++) {
|
|
var joints = skinDefs[skinIndex].joints;
|
|
for (var i = 0, il = joints.length; i < il; i++) {
|
|
nodeDefs[joints[i]].isBone = true;
|
|
}
|
|
}
|
|
// Meshes can (and should) be reused by multiple nodes in a glTF asset. To
|
// avoid having more than one THREE.Mesh with the same name, count
|
// references and rename instances below.
|
//
|
// Example: CesiumMilkTruck sample model reuses "Wheel" meshes.
|
for (var nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex++) {
|
|
var nodeDef = nodeDefs[nodeIndex];
|
|
if (nodeDef.mesh !== undefined) {
|
|
if (meshReferences[nodeDef.mesh] === undefined) {
|
|
meshReferences[nodeDef.mesh] = meshUses[nodeDef.mesh] = 0;
|
|
}
|
|
meshReferences[nodeDef.mesh]++;
|
|
// Nothing in the mesh definition indicates whether it is
|
// a SkinnedMesh or Mesh. Use the node's mesh reference
|
// to mark SkinnedMesh if node has skin.
|
if (nodeDef.skin !== undefined) {
|
|
meshDefs[nodeDef.mesh].isSkinnedMesh = true;
|
|
}
|
|
}
|
|
}
|
|
this.json.meshReferences = meshReferences;
|
this.json.meshUses = meshUses;
|
|
};
|
|
/**
|
* Requests the specified dependency asynchronously, with caching.
|
* @param {string} type
|
* @param {number} index
|
* @return {Promise<Object>}
|
*/
|
GLTFParser.prototype.getDependency = function (type, index) {
|
|
var cacheKey = type + ':' + index;
|
var dependency = this.cache.get(cacheKey);
|
|
if (!dependency) {
|
|
switch (type) {
|
|
case 'scene':
|
dependency = this.loadScene(index);
|
break;
|
|
case 'node':
|
dependency = this.loadNode(index);
|
break;
|
|
case 'mesh':
|
dependency = this.loadMesh(index);
|
break;
|
|
case 'accessor':
|
dependency = this.loadAccessor(index);
|
break;
|
|
case 'bufferView':
|
dependency = this.loadBufferView(index);
|
break;
|
|
case 'buffer':
|
dependency = this.loadBuffer(index);
|
break;
|
|
case 'material':
|
dependency = this.loadMaterial(index);
|
break;
|
|
case 'texture':
|
dependency = this.loadTexture(index);
|
break;
|
|
case 'skin':
|
dependency = this.loadSkin(index);
|
break;
|
|
case 'animation':
|
dependency = this.loadAnimation(index);
|
break;
|
|
case 'camera':
|
dependency = this.loadCamera(index);
|
break;
|
|
default:
|
throw new Error('Unknown type: ' + type);
|
|
}
|
|
this.cache.add(cacheKey, dependency);
|
|
}
|
|
return dependency;
|
|
};
|
|
/**
|
* Requests all dependencies of the specified type asynchronously, with caching.
|
* @param {string} type
|
* @return {Promise<Array<Object>>}
|
*/
|
GLTFParser.prototype.getDependencies = function (type) {
|
|
var dependencies = this.cache.get(type);
|
|
if (!dependencies) {
|
|
var parser = this;
|
var defs = this.json[type + (type === 'mesh' ? 'es' : 's')] || [];
|
|
dependencies = Promise.all(defs.map(function (def, index) {
|
|
return parser.getDependency(type, index);
|
|
}));
|
|
this.cache.add(type, dependencies);
|
|
}
|
|
return dependencies;
|
|
};
|
|
/**
|
* Requests all multiple dependencies of the specified types asynchronously, with caching.
|
* @param {Array<string>} types
|
* @return {Promise<Object<Array<Object>>>}
|
*/
|
GLTFParser.prototype.getMultiDependencies = function (types) {
|
|
var results = {};
|
var pendings = [];
|
|
for (var i = 0, il = types.length; i < il; i++) {
|
|
var type = types[i];
|
var value = this.getDependencies(type);
|
|
value = value.then(function (key, value) {
|
|
results[key] = value;
|
|
}.bind(this, type + (type === 'mesh' ? 'es' : 's')));
|
|
pendings.push(value);
|
|
}
|
|
return Promise.all(pendings).then(function () {
|
|
return results;
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
|
* @param {number} bufferIndex
|
* @return {Promise<ArrayBuffer>}
|
*/
|
GLTFParser.prototype.loadBuffer = function (bufferIndex) {
|
|
var bufferDef = this.json.buffers[bufferIndex];
|
var loader = this.fileLoader;
|
|
if (bufferDef.type && bufferDef.type !== 'arraybuffer') {
|
|
throw new Error('THREE.GLTFLoader: ' + bufferDef.type + ' buffer type is not supported.');
|
|
}
|
|
// If present, GLB container is required to be the first buffer.
|
if (bufferDef.uri === undefined && bufferIndex === 0) {
|
|
return Promise.resolve(this.extensions[EXTENSIONS.KHR_BINARY_GLTF].body);
|
|
}
|
|
var options = this.options;
|
|
return new Promise(function (resolve, reject) {
|
|
loader.load(resolveURL(bufferDef.uri, options.path), resolve, undefined, function () {
|
|
reject(new Error('THREE.GLTFLoader: Failed to load buffer "' + bufferDef.uri + '".'));
|
|
});
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
|
* @param {number} bufferViewIndex
|
* @return {Promise<ArrayBuffer>}
|
*/
|
GLTFParser.prototype.loadBufferView = function (bufferViewIndex) {
|
|
var bufferViewDef = this.json.bufferViews[bufferViewIndex];
|
|
return this.getDependency('buffer', bufferViewDef.buffer).then(function (buffer) {
|
|
var byteLength = bufferViewDef.byteLength || 0;
|
var byteOffset = bufferViewDef.byteOffset || 0;
|
return buffer.slice(byteOffset, byteOffset + byteLength);
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#accessors
|
* @param {number} accessorIndex
|
* @return {Promise<THREE.BufferAttribute|THREE.InterleavedBufferAttribute>}
|
*/
|
GLTFParser.prototype.loadAccessor = function (accessorIndex) {
|
|
var parser = this;
|
var json = this.json;
|
|
var accessorDef = this.json.accessors[accessorIndex];
|
|
if (accessorDef.bufferView === undefined && accessorDef.sparse === undefined) {
|
|
// Ignore empty accessors, which may be used to declare runtime
|
// information about attributes coming from another source (e.g. Draco
|
// compression extension).
|
return null;
|
|
}
|
|
var pendingBufferViews = [];
|
|
if (accessorDef.bufferView !== undefined) {
|
|
pendingBufferViews.push(this.getDependency('bufferView', accessorDef.bufferView));
|
|
} else {
|
|
pendingBufferViews.push(null);
|
|
}
|
|
if (accessorDef.sparse !== undefined) {
|
|
pendingBufferViews.push(this.getDependency('bufferView', accessorDef.sparse.indices.bufferView));
|
pendingBufferViews.push(this.getDependency('bufferView', accessorDef.sparse.values.bufferView));
|
|
}
|
|
return Promise.all(pendingBufferViews).then(function (bufferViews) {
|
|
var bufferView = bufferViews[0];
|
|
var itemSize = WEBGL_TYPE_SIZES[accessorDef.type];
|
var TypedArray = WEBGL_COMPONENT_TYPES[accessorDef.componentType];
|
|
// For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.
|
var elementBytes = TypedArray.BYTES_PER_ELEMENT;
|
var itemBytes = elementBytes * itemSize;
|
var byteOffset = accessorDef.byteOffset || 0;
|
var byteStride = json.bufferViews[accessorDef.bufferView].byteStride;
|
var normalized = accessorDef.normalized === true;
|
var array, bufferAttribute;
|
|
// The buffer is not interleaved if the stride is the item size in bytes.
|
if (byteStride && byteStride !== itemBytes) {
|
|
var ibCacheKey = 'InterleavedBuffer:' + accessorDef.bufferView + ':' + accessorDef.componentType;
|
var ib = parser.cache.get(ibCacheKey);
|
|
if (!ib) {
|
|
// Use the full buffer if it's interleaved.
|
array = new TypedArray(bufferView);
|
|
// Integer parameters to IB/IBA are in array elements, not bytes.
|
ib = new THREE.InterleavedBuffer(array, byteStride / elementBytes);
|
|
parser.cache.add(ibCacheKey, ib);
|
|
}
|
|
bufferAttribute = new THREE.InterleavedBufferAttribute(ib, itemSize, byteOffset / elementBytes, normalized);
|
|
} else {
|
|
if (bufferView === null) {
|
|
array = new TypedArray(accessorDef.count * itemSize);
|
|
} else {
|
|
array = new TypedArray(bufferView, byteOffset, accessorDef.count * itemSize);
|
|
}
|
|
bufferAttribute = new THREE.BufferAttribute(array, itemSize, normalized);
|
|
}
|
|
// https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#sparse-accessors
|
if (accessorDef.sparse !== undefined) {
|
|
var itemSizeIndices = WEBGL_TYPE_SIZES.SCALAR;
|
var TypedArrayIndices = WEBGL_COMPONENT_TYPES[accessorDef.sparse.indices.componentType];
|
|
var byteOffsetIndices = accessorDef.sparse.indices.byteOffset || 0;
|
var byteOffsetValues = accessorDef.sparse.values.byteOffset || 0;
|
|
var sparseIndices = new TypedArrayIndices(bufferViews[1], byteOffsetIndices, accessorDef.sparse.count * itemSizeIndices);
|
var sparseValues = new TypedArray(bufferViews[2], byteOffsetValues, accessorDef.sparse.count * itemSize);
|
|
if (bufferView !== null) {
|
|
// Avoid modifying the original ArrayBuffer, if the bufferView wasn't initialized with zeroes.
|
bufferAttribute.setArray(bufferAttribute.array.slice());
|
|
}
|
|
for (var i = 0, il = sparseIndices.length; i < il; i++) {
|
|
var index = sparseIndices[i];
|
|
bufferAttribute.setX(index, sparseValues[i * itemSize]);
|
if (itemSize >= 2) bufferAttribute.setY(index, sparseValues[i * itemSize + 1]);
|
if (itemSize >= 3) bufferAttribute.setZ(index, sparseValues[i * itemSize + 2]);
|
if (itemSize >= 4) bufferAttribute.setW(index, sparseValues[i * itemSize + 3]);
|
if (itemSize >= 5) throw new Error('THREE.GLTFLoader: Unsupported itemSize in sparse BufferAttribute.');
|
|
}
|
|
}
|
|
return bufferAttribute;
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#textures
|
* @param {number} textureIndex
|
* @return {Promise<THREE.Texture>}
|
*/
|
GLTFParser.prototype.loadTexture = function (textureIndex) {
|
|
var parser = this;
|
var json = this.json;
|
var options = this.options;
|
var textureLoader = this.textureLoader;
|
|
var URL = window.URL || window.webkitURL;
|
|
var textureDef = json.textures[textureIndex];
|
|
var textureExtensions = textureDef.extensions || {};
|
|
var source;
|
|
if (textureExtensions[EXTENSIONS.MSFT_TEXTURE_DDS]) {
|
|
source = json.images[textureExtensions[EXTENSIONS.MSFT_TEXTURE_DDS].source];
|
|
} else {
|
|
source = json.images[textureDef.source];
|
|
}
|
|
var sourceURI = source.uri;
|
var isObjectURL = false;
|
|
if (source.bufferView !== undefined) {
|
|
// Load binary image data from bufferView, if provided.
|
|
sourceURI = parser.getDependency('bufferView', source.bufferView).then(function (bufferView) {
|
|
isObjectURL = true;
|
var blob = new Blob([bufferView], { type: source.mimeType });
|
sourceURI = URL.createObjectURL(blob);
|
return sourceURI;
|
|
});
|
|
}
|
|
return Promise.resolve(sourceURI).then(function (sourceURI) {
|
|
// Load Texture resource.
|
|
var loader = THREE.Loader.Handlers.get(sourceURI);
|
|
if (!loader) {
|
|
loader = textureExtensions[EXTENSIONS.MSFT_TEXTURE_DDS]
|
? parser.extensions[EXTENSIONS.MSFT_TEXTURE_DDS].ddsLoader
|
: textureLoader;
|
|
}
|
|
return new Promise(function (resolve, reject) {
|
|
loader.load(resolveURL(sourceURI, options.path), resolve, undefined, reject);
|
|
});
|
|
}).then(function (texture) {
|
|
// Clean up resources and configure Texture.
|
|
if (isObjectURL === true) {
|
|
URL.revokeObjectURL(sourceURI);
|
|
}
|
|
texture.flipY = false;
|
|
if (textureDef.name !== undefined) texture.name = textureDef.name;
|
|
// .format of dds texture is set in DDSLoader
|
if (!textureExtensions[EXTENSIONS.MSFT_TEXTURE_DDS]) {
|
|
texture.format = textureDef.format !== undefined ? WEBGL_TEXTURE_FORMATS[textureDef.format] : THREE.RGBAFormat;
|
|
}
|
|
if (textureDef.internalFormat !== undefined && texture.format !== WEBGL_TEXTURE_FORMATS[textureDef.internalFormat]) {
|
|
console.warn('THREE.GLTFLoader: Three.js does not support texture internalFormat which is different from texture format. ' +
|
'internalFormat will be forced to be the same value as format.');
|
|
}
|
|
texture.type = textureDef.type !== undefined ? WEBGL_TEXTURE_DATATYPES[textureDef.type] : THREE.UnsignedByteType;
|
|
var samplers = json.samplers || {};
|
var sampler = samplers[textureDef.sampler] || {};
|
|
texture.magFilter = WEBGL_FILTERS[sampler.magFilter] || THREE.LinearFilter;
|
texture.minFilter = WEBGL_FILTERS[sampler.minFilter] || THREE.LinearMipMapLinearFilter;
|
texture.wrapS = WEBGL_WRAPPINGS[sampler.wrapS] || THREE.RepeatWrapping;
|
texture.wrapT = WEBGL_WRAPPINGS[sampler.wrapT] || THREE.RepeatWrapping;
|
|
return texture;
|
|
});
|
|
};
|
|
/**
|
* Asynchronously assigns a texture to the given material parameters.
|
* @param {Object} materialParams
|
* @param {string} textureName
|
* @param {number} textureIndex
|
* @return {Promise}
|
*/
|
GLTFParser.prototype.assignTexture = function (materialParams, textureName, textureIndex) {
|
|
return this.getDependency('texture', textureIndex).then(function (texture) {
|
|
materialParams[textureName] = texture;
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
|
* @param {number} materialIndex
|
* @return {Promise<THREE.Material>}
|
*/
|
GLTFParser.prototype.loadMaterial = function (materialIndex) {
|
|
var parser = this;
|
var json = this.json;
|
var extensions = this.extensions;
|
var materialDef = this.json.materials[materialIndex];
|
|
var materialType;
|
var materialParams = {};
|
var materialExtensions = materialDef.extensions || {};
|
|
var pending = [];
|
|
if (materialExtensions[EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS]) {
|
|
var sgExtension = extensions[EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS];
|
materialType = sgExtension.getMaterialType(materialDef);
|
pending.push(sgExtension.extendParams(materialParams, materialDef, parser));
|
|
} else if (materialExtensions[EXTENSIONS.KHR_MATERIALS_UNLIT]) {
|
|
var kmuExtension = extensions[EXTENSIONS.KHR_MATERIALS_UNLIT];
|
materialType = kmuExtension.getMaterialType(materialDef);
|
pending.push(kmuExtension.extendParams(materialParams, materialDef, parser));
|
|
} else {
|
|
// Specification:
|
// https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#metallic-roughness-material
|
|
materialType = THREE.MeshStandardMaterial;
|
|
var metallicRoughness = materialDef.pbrMetallicRoughness || {};
|
|
materialParams.color = new THREE.Color(1.0, 1.0, 1.0);
|
materialParams.opacity = 1.0;
|
|
if (Array.isArray(metallicRoughness.baseColorFactor)) {
|
|
var array = metallicRoughness.baseColorFactor;
|
|
materialParams.color.fromArray(array);
|
materialParams.opacity = array[3];
|
|
}
|
|
if (metallicRoughness.baseColorTexture !== undefined) {
|
|
pending.push(parser.assignTexture(materialParams, 'map', metallicRoughness.baseColorTexture.index));
|
|
}
|
|
materialParams.metalness = metallicRoughness.metallicFactor !== undefined ? metallicRoughness.metallicFactor : 1.0;
|
materialParams.roughness = metallicRoughness.roughnessFactor !== undefined ? metallicRoughness.roughnessFactor : 1.0;
|
|
if (metallicRoughness.metallicRoughnessTexture !== undefined) {
|
|
var textureIndex = metallicRoughness.metallicRoughnessTexture.index;
|
pending.push(parser.assignTexture(materialParams, 'metalnessMap', textureIndex));
|
pending.push(parser.assignTexture(materialParams, 'roughnessMap', textureIndex));
|
|
}
|
|
}
|
|
if (materialDef.doubleSided === true) {
|
|
materialParams.side = THREE.DoubleSide;
|
|
}
|
|
var alphaMode = materialDef.alphaMode || ALPHA_MODES.OPAQUE;
|
|
if (alphaMode === ALPHA_MODES.BLEND) {
|
|
materialParams.transparent = true;
|
|
} else {
|
|
materialParams.transparent = false;
|
|
if (alphaMode === ALPHA_MODES.MASK) {
|
|
materialParams.alphaTest = materialDef.alphaCutoff !== undefined ? materialDef.alphaCutoff : 0.5;
|
|
}
|
|
}
|
|
if (materialDef.normalTexture !== undefined && materialType !== THREE.MeshBasicMaterial) {
|
|
pending.push(parser.assignTexture(materialParams, 'normalMap', materialDef.normalTexture.index));
|
|
materialParams.normalScale = new THREE.Vector2(1, 1);
|
|
if (materialDef.normalTexture.scale !== undefined) {
|
|
materialParams.normalScale.set(materialDef.normalTexture.scale, materialDef.normalTexture.scale);
|
|
}
|
|
}
|
|
if (materialDef.occlusionTexture !== undefined && materialType !== THREE.MeshBasicMaterial) {
|
|
pending.push(parser.assignTexture(materialParams, 'aoMap', materialDef.occlusionTexture.index));
|
|
if (materialDef.occlusionTexture.strength !== undefined) {
|
|
materialParams.aoMapIntensity = materialDef.occlusionTexture.strength;
|
|
}
|
|
}
|
|
if (materialDef.emissiveFactor !== undefined && materialType !== THREE.MeshBasicMaterial) {
|
|
materialParams.emissive = new THREE.Color().fromArray(materialDef.emissiveFactor);
|
|
}
|
|
if (materialDef.emissiveTexture !== undefined && materialType !== THREE.MeshBasicMaterial) {
|
|
pending.push(parser.assignTexture(materialParams, 'emissiveMap', materialDef.emissiveTexture.index));
|
|
}
|
|
return Promise.all(pending).then(function () {
|
|
var material;
|
|
if (materialType === THREE.ShaderMaterial) {
|
|
material = extensions[EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS].createMaterial(materialParams);
|
|
} else {
|
|
material = new materialType(materialParams);
|
|
}
|
|
if (materialDef.name !== undefined) material.name = materialDef.name;
|
|
// Normal map textures use OpenGL conventions:
|
// https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#materialnormaltexture
|
if (material.normalScale) {
|
|
material.normalScale.y = -material.normalScale.y;
|
|
}
|
|
// baseColorTexture, emissiveTexture, and specularGlossinessTexture use sRGB encoding.
|
if (material.map) material.map.encoding = THREE.sRGBEncoding;
|
if (material.emissiveMap) material.emissiveMap.encoding = THREE.sRGBEncoding;
|
if (material.specularMap) material.specularMap.encoding = THREE.sRGBEncoding;
|
|
if (materialDef.extras) material.userData = materialDef.extras;
|
|
if (materialDef.extensions) addUnknownExtensionsToUserData(extensions, material, materialDef);
|
|
return material;
|
|
});
|
|
};
|
|
/**
|
* @param {THREE.BufferGeometry} geometry
|
* @param {GLTF.Primitive} primitiveDef
|
* @param {Array<THREE.BufferAttribute>} accessors
|
*/
|
function addPrimitiveAttributes(geometry, primitiveDef, accessors) {
|
|
var attributes = primitiveDef.attributes;
|
|
for (var gltfAttributeName in attributes) {
|
|
var threeAttributeName = ATTRIBUTES[gltfAttributeName];
|
var bufferAttribute = accessors[attributes[gltfAttributeName]];
|
|
// Skip attributes already provided by e.g. Draco extension.
|
if (!threeAttributeName) continue;
|
if (threeAttributeName in geometry.attributes) continue;
|
|
geometry.addAttribute(threeAttributeName, bufferAttribute);
|
|
}
|
|
if (primitiveDef.indices !== undefined && !geometry.index) {
|
|
geometry.setIndex(accessors[primitiveDef.indices]);
|
|
}
|
|
if (primitiveDef.targets !== undefined) {
|
|
addMorphTargets(geometry, primitiveDef.targets, accessors);
|
|
}
|
|
if (primitiveDef.extras !== undefined) {
|
|
geometry.userData = primitiveDef.extras;
|
|
}
|
|
}
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#geometry
|
*
|
* Creates BufferGeometries from primitives.
|
* If we can build a single BufferGeometry with .groups from multiple primitives, returns one BufferGeometry.
|
* Otherwise, returns BufferGeometries without .groups as many as primitives.
|
*
|
* @param {Array<Object>} primitives
|
* @return {Promise<Array<THREE.BufferGeometry>>}
|
*/
|
GLTFParser.prototype.loadGeometries = function (primitives) {
|
|
var parser = this;
|
var extensions = this.extensions;
|
var cache = this.primitiveCache;
|
|
var isMultiPass = isMultiPassGeometry(primitives);
|
var originalPrimitives;
|
|
if (isMultiPass) {
|
|
originalPrimitives = primitives; // save original primitives and use later
|
|
// We build a single BufferGeometry with .groups from multiple primitives
|
// because all primitives share the same attributes/morph/mode and have indices.
|
|
primitives = [primitives[0]];
|
|
// Sets .groups and combined indices to a geometry later in this method.
|
|
}
|
|
return this.getDependencies('accessor').then(function (accessors) {
|
|
var pending = [];
|
|
for (var i = 0, il = primitives.length; i < il; i++) {
|
|
var primitive = primitives[i];
|
|
// See if we've already created this geometry
|
var cached = getCachedGeometry(cache, primitive);
|
|
if (cached) {
|
|
// Use the cached geometry if it exists
|
pending.push(cached);
|
|
} else if (primitive.extensions && primitive.extensions[EXTENSIONS.KHR_DRACO_MESH_COMPRESSION]) {
|
|
// Use DRACO geometry if available
|
var geometryPromise = extensions[EXTENSIONS.KHR_DRACO_MESH_COMPRESSION]
|
.decodePrimitive(primitive, parser)
|
.then(function (geometry) {
|
|
addPrimitiveAttributes(geometry, primitive, accessors);
|
|
return geometry;
|
|
});
|
|
cache.push({ primitive: primitive, promise: geometryPromise });
|
|
pending.push(geometryPromise);
|
|
} else {
|
|
// Otherwise create a new geometry
|
var geometry = new THREE.BufferGeometry();
|
|
addPrimitiveAttributes(geometry, primitive, accessors);
|
|
var geometryPromise = Promise.resolve(geometry);
|
|
// Cache this geometry
|
cache.push({ primitive: primitive, promise: geometryPromise });
|
|
pending.push(geometryPromise);
|
|
}
|
|
}
|
|
return Promise.all(pending).then(function (geometries) {
|
|
if (isMultiPass) {
|
|
var baseGeometry = geometries[0];
|
|
// See if we've already created this combined geometry
|
var cache = parser.multiPassGeometryCache;
|
var cached = getCachedMultiPassGeometry(cache, baseGeometry, originalPrimitives);
|
|
if (cached !== null) return [cached.geometry];
|
|
// Cloning geometry because of index override.
|
// Attributes can be reused so cloning by myself here.
|
var geometry = new THREE.BufferGeometry();
|
|
geometry.name = baseGeometry.name;
|
geometry.userData = baseGeometry.userData;
|
|
for (var key in baseGeometry.attributes) geometry.addAttribute(key, baseGeometry.attributes[key]);
|
for (var key in baseGeometry.morphAttributes) geometry.morphAttributes[key] = baseGeometry.morphAttributes[key];
|
|
var indices = [];
|
var offset = 0;
|
|
for (var i = 0, il = originalPrimitives.length; i < il; i++) {
|
|
var accessor = accessors[originalPrimitives[i].indices];
|
|
for (var j = 0, jl = accessor.count; j < jl; j++) indices.push(accessor.array[j]);
|
|
geometry.addGroup(offset, accessor.count, i);
|
|
offset += accessor.count;
|
|
}
|
|
geometry.setIndex(indices);
|
|
cache.push({ geometry: geometry, baseGeometry: baseGeometry, primitives: originalPrimitives });
|
|
return [geometry];
|
|
} else if (geometries.length > 1 && THREE.BufferGeometryUtils !== undefined) {
|
|
// Tries to merge geometries with BufferGeometryUtils if possible
|
|
for (var i = 1, il = primitives.length; i < il; i++) {
|
|
// can't merge if draw mode is different
|
if (primitives[0].mode !== primitives[i].mode) return geometries;
|
|
}
|
|
// See if we've already created this combined geometry
|
var cache = parser.multiplePrimitivesCache;
|
var cached = getCachedCombinedGeometry(cache, geometries);
|
|
if (cached) {
|
|
if (cached.geometry !== null) return [cached.geometry];
|
|
} else {
|
|
var geometry = THREE.BufferGeometryUtils.mergeBufferGeometries(geometries, true);
|
|
cache.push({ geometry: geometry, baseGeometries: geometries });
|
|
if (geometry !== null) return [geometry];
|
|
}
|
|
}
|
|
return geometries;
|
|
});
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#meshes
|
* @param {number} meshIndex
|
* @return {Promise<THREE.Group|THREE.Mesh|THREE.SkinnedMesh>}
|
*/
|
GLTFParser.prototype.loadMesh = function (meshIndex) {
|
|
var scope = this;
|
var json = this.json;
|
var extensions = this.extensions;
|
|
var meshDef = this.json.meshes[meshIndex];
|
|
return this.getMultiDependencies([
|
|
'accessor',
|
'material'
|
|
]).then(function (dependencies) {
|
|
var primitives = meshDef.primitives;
|
var originalMaterials = [];
|
|
for (var i = 0, il = primitives.length; i < il; i++) {
|
|
originalMaterials[i] = primitives[i].material === undefined
|
? createDefaultMaterial()
|
: dependencies.materials[primitives[i].material];
|
|
}
|
|
return scope.loadGeometries(primitives).then(function (geometries) {
|
|
var isMultiMaterial = geometries.length === 1 && geometries[0].groups.length > 0;
|
|
var meshes = [];
|
|
for (var i = 0, il = geometries.length; i < il; i++) {
|
|
var geometry = geometries[i];
|
var primitive = primitives[i];
|
|
// 1. create Mesh
|
|
var mesh;
|
|
var material = isMultiMaterial ? originalMaterials : originalMaterials[i]
|
|
if (primitive.mode === WEBGL_CONSTANTS.TRIANGLES ||
|
primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP ||
|
primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ||
|
primitive.mode === undefined) {
|
|
// .isSkinnedMesh isn't in glTF spec. See .markDefs()
|
mesh = meshDef.isSkinnedMesh === true
|
? new THREE.SkinnedMesh(geometry, material)
|
: new THREE.Mesh(geometry, material);
|
|
if (primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP) {
|
|
mesh.drawMode = THREE.TriangleStripDrawMode;
|
|
} else if (primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN) {
|
|
mesh.drawMode = THREE.TriangleFanDrawMode;
|
|
}
|
|
} else if (primitive.mode === WEBGL_CONSTANTS.LINES) {
|
|
mesh = new THREE.LineSegments(geometry, material);
|
|
} else if (primitive.mode === WEBGL_CONSTANTS.LINE_STRIP) {
|
|
mesh = new THREE.Line(geometry, material);
|
|
} else if (primitive.mode === WEBGL_CONSTANTS.LINE_LOOP) {
|
|
mesh = new THREE.LineLoop(geometry, material);
|
|
} else if (primitive.mode === WEBGL_CONSTANTS.POINTS) {
|
|
mesh = new THREE.Points(geometry, material);
|
|
} else {
|
|
throw new Error('THREE.GLTFLoader: Primitive mode unsupported: ' + primitive.mode);
|
|
}
|
|
if (Object.keys(mesh.geometry.morphAttributes).length > 0) {
|
|
updateMorphTargets(mesh, meshDef);
|
|
}
|
|
mesh.name = meshDef.name || ('mesh_' + meshIndex);
|
|
if (geometries.length > 1) mesh.name += '_' + i;
|
|
if (meshDef.extras !== undefined) mesh.userData = meshDef.extras;
|
|
meshes.push(mesh);
|
|
// 2. update Material depending on Mesh and BufferGeometry
|
|
var materials = isMultiMaterial ? mesh.material : [mesh.material];
|
|
var useVertexColors = geometry.attributes.color !== undefined;
|
var useFlatShading = geometry.attributes.normal === undefined;
|
var useSkinning = mesh.isSkinnedMesh === true;
|
var useMorphTargets = Object.keys(geometry.morphAttributes).length > 0;
|
var useMorphNormals = useMorphTargets && geometry.morphAttributes.normal !== undefined;
|
|
for (var j = 0, jl = materials.length; j < jl; j++) {
|
|
var material = materials[j];
|
|
if (mesh.isPoints) {
|
|
var cacheKey = 'PointsMaterial:' + material.uuid;
|
|
var pointsMaterial = scope.cache.get(cacheKey);
|
|
if (!pointsMaterial) {
|
|
pointsMaterial = new THREE.PointsMaterial();
|
THREE.Material.prototype.copy.call(pointsMaterial, material);
|
pointsMaterial.color.copy(material.color);
|
pointsMaterial.map = material.map;
|
pointsMaterial.lights = false; // PointsMaterial doesn't support lights yet
|
|
scope.cache.add(cacheKey, pointsMaterial);
|
|
}
|
|
material = pointsMaterial;
|
|
} else if (mesh.isLine) {
|
|
var cacheKey = 'LineBasicMaterial:' + material.uuid;
|
|
var lineMaterial = scope.cache.get(cacheKey);
|
|
if (!lineMaterial) {
|
|
lineMaterial = new THREE.LineBasicMaterial();
|
THREE.Material.prototype.copy.call(lineMaterial, material);
|
lineMaterial.color.copy(material.color);
|
lineMaterial.lights = false; // LineBasicMaterial doesn't support lights yet
|
|
scope.cache.add(cacheKey, lineMaterial);
|
|
}
|
|
material = lineMaterial;
|
|
}
|
|
// Clone the material if it will be modified
|
if (useVertexColors || useFlatShading || useSkinning || useMorphTargets) {
|
|
var cacheKey = 'ClonedMaterial:' + material.uuid + ':';
|
|
if (material.isGLTFSpecularGlossinessMaterial) cacheKey += 'specular-glossiness:';
|
if (useSkinning) cacheKey += 'skinning:';
|
if (useVertexColors) cacheKey += 'vertex-colors:';
|
if (useFlatShading) cacheKey += 'flat-shading:';
|
if (useMorphTargets) cacheKey += 'morph-targets:';
|
if (useMorphNormals) cacheKey += 'morph-normals:';
|
|
var cachedMaterial = scope.cache.get(cacheKey);
|
|
if (!cachedMaterial) {
|
|
cachedMaterial = material.isGLTFSpecularGlossinessMaterial
|
? extensions[EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS].cloneMaterial(material)
|
: material.clone();
|
|
if (useSkinning) cachedMaterial.skinning = true;
|
if (useVertexColors) cachedMaterial.vertexColors = THREE.VertexColors;
|
if (useFlatShading) cachedMaterial.flatShading = true;
|
if (useMorphTargets) cachedMaterial.morphTargets = true;
|
if (useMorphNormals) cachedMaterial.morphNormals = true;
|
|
scope.cache.add(cacheKey, cachedMaterial);
|
|
}
|
|
material = cachedMaterial;
|
|
}
|
|
materials[j] = material;
|
|
// workarounds for mesh and geometry
|
|
if (material.aoMap && geometry.attributes.uv2 === undefined && geometry.attributes.uv !== undefined) {
|
|
console.log('THREE.GLTFLoader: Duplicating UVs to support aoMap.');
|
geometry.addAttribute('uv2', new THREE.BufferAttribute(geometry.attributes.uv.array, 2));
|
|
}
|
|
if (material.isGLTFSpecularGlossinessMaterial) {
|
|
// for GLTFSpecularGlossinessMaterial(ShaderMaterial) uniforms runtime update
|
mesh.onBeforeRender = extensions[EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS].refreshUniforms;
|
|
}
|
|
}
|
|
mesh.material = isMultiMaterial ? materials : materials[0];
|
|
}
|
|
if (meshes.length === 1) {
|
|
return meshes[0];
|
|
}
|
|
var group = new THREE.Group();
|
|
for (var i = 0, il = meshes.length; i < il; i++) {
|
|
group.add(meshes[i]);
|
|
}
|
|
return group;
|
|
});
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#cameras
|
* @param {number} cameraIndex
|
* @return {Promise<THREE.Camera>}
|
*/
|
GLTFParser.prototype.loadCamera = function (cameraIndex) {
|
|
var camera;
|
var cameraDef = this.json.cameras[cameraIndex];
|
var params = cameraDef[cameraDef.type];
|
|
if (!params) {
|
|
console.warn('THREE.GLTFLoader: Missing camera parameters.');
|
return;
|
|
}
|
|
if (cameraDef.type === 'perspective') {
|
|
camera = new THREE.PerspectiveCamera(THREE.Math.radToDeg(params.yfov), params.aspectRatio || 1, params.znear || 1, params.zfar || 2e6);
|
|
} else if (cameraDef.type === 'orthographic') {
|
|
camera = new THREE.OrthographicCamera(params.xmag / -2, params.xmag / 2, params.ymag / 2, params.ymag / -2, params.znear, params.zfar);
|
|
}
|
|
if (cameraDef.name !== undefined) camera.name = cameraDef.name;
|
if (cameraDef.extras) camera.userData = cameraDef.extras;
|
|
return Promise.resolve(camera);
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#skins
|
* @param {number} skinIndex
|
* @return {Promise<Object>}
|
*/
|
GLTFParser.prototype.loadSkin = function (skinIndex) {
|
|
var skinDef = this.json.skins[skinIndex];
|
|
var skinEntry = { joints: skinDef.joints };
|
|
if (skinDef.inverseBindMatrices === undefined) {
|
|
return Promise.resolve(skinEntry);
|
|
}
|
|
return this.getDependency('accessor', skinDef.inverseBindMatrices).then(function (accessor) {
|
|
skinEntry.inverseBindMatrices = accessor;
|
|
return skinEntry;
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#animations
|
* @param {number} animationIndex
|
* @return {Promise<THREE.AnimationClip>}
|
*/
|
GLTFParser.prototype.loadAnimation = function (animationIndex) {
|
|
var json = this.json;
|
|
var animationDef = this.json.animations[animationIndex];
|
|
return this.getMultiDependencies([
|
|
'accessor',
|
'node'
|
|
]).then(function (dependencies) {
|
|
var tracks = [];
|
|
for (var i = 0, il = animationDef.channels.length; i < il; i++) {
|
|
var channel = animationDef.channels[i];
|
var sampler = animationDef.samplers[channel.sampler];
|
|
if (sampler) {
|
|
var target = channel.target;
|
var name = target.node !== undefined ? target.node : target.id; // NOTE: target.id is deprecated.
|
var input = animationDef.parameters !== undefined ? animationDef.parameters[sampler.input] : sampler.input;
|
var output = animationDef.parameters !== undefined ? animationDef.parameters[sampler.output] : sampler.output;
|
|
var inputAccessor = dependencies.accessors[input];
|
var outputAccessor = dependencies.accessors[output];
|
|
var node = dependencies.nodes[name];
|
|
if (node) {
|
|
node.updateMatrix();
|
node.matrixAutoUpdate = true;
|
|
var TypedKeyframeTrack;
|
|
switch (PATH_PROPERTIES[target.path]) {
|
|
case PATH_PROPERTIES.weights:
|
|
TypedKeyframeTrack = THREE.NumberKeyframeTrack;
|
break;
|
|
case PATH_PROPERTIES.rotation:
|
|
TypedKeyframeTrack = THREE.QuaternionKeyframeTrack;
|
break;
|
|
case PATH_PROPERTIES.position:
|
case PATH_PROPERTIES.scale:
|
default:
|
|
TypedKeyframeTrack = THREE.VectorKeyframeTrack;
|
break;
|
|
}
|
|
var targetName = node.name ? node.name : node.uuid;
|
|
var interpolation = sampler.interpolation !== undefined ? INTERPOLATION[sampler.interpolation] : THREE.InterpolateLinear;
|
|
var targetNames = [];
|
|
if (PATH_PROPERTIES[target.path] === PATH_PROPERTIES.weights) {
|
|
// node can be THREE.Group here but
|
// PATH_PROPERTIES.weights(morphTargetInfluences) should be
|
// the property of a mesh object under group.
|
|
node.traverse(function (object) {
|
|
if (object.isMesh === true && object.morphTargetInfluences) {
|
|
targetNames.push(object.name ? object.name : object.uuid);
|
|
}
|
|
});
|
|
} else {
|
|
targetNames.push(targetName);
|
|
}
|
|
// KeyframeTrack.optimize() will modify given 'times' and 'values'
|
// buffers before creating a truncated copy to keep. Because buffers may
|
// be reused by other tracks, make copies here.
|
for (var j = 0, jl = targetNames.length; j < jl; j++) {
|
|
var track = new TypedKeyframeTrack(
|
targetNames[j] + '.' + PATH_PROPERTIES[target.path],
|
THREE.AnimationUtils.arraySlice(inputAccessor.array, 0),
|
THREE.AnimationUtils.arraySlice(outputAccessor.array, 0),
|
interpolation
|
);
|
|
// Here is the trick to enable custom interpolation.
|
// Overrides .createInterpolant in a factory method which creates custom interpolation.
|
if (sampler.interpolation === 'CUBICSPLINE') {
|
|
track.createInterpolant = function InterpolantFactoryMethodGLTFCubicSpline(result) {
|
|
// A CUBICSPLINE keyframe in glTF has three output values for each input value,
|
// representing inTangent, splineVertex, and outTangent. As a result, track.getValueSize()
|
// must be divided by three to get the interpolant's sampleSize argument.
|
|
return new GLTFCubicSplineInterpolant(this.times, this.values, this.getValueSize() / 3, result);
|
|
};
|
|
// Workaround, provide an alternate way to know if the interpolant type is cubis spline to track.
|
// track.getInterpolation() doesn't return valid value for custom interpolant.
|
track.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline = true;
|
|
}
|
|
tracks.push(track);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
var name = animationDef.name !== undefined ? animationDef.name : 'animation_' + animationIndex;
|
|
return new THREE.AnimationClip(name, undefined, tracks);
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#nodes-and-hierarchy
|
* @param {number} nodeIndex
|
* @return {Promise<THREE.Object3D>}
|
*/
|
GLTFParser.prototype.loadNode = function (nodeIndex) {
|
|
var json = this.json;
|
var extensions = this.extensions;
|
|
var meshReferences = this.json.meshReferences;
|
var meshUses = this.json.meshUses;
|
|
var nodeDef = this.json.nodes[nodeIndex];
|
|
return this.getMultiDependencies([
|
|
'mesh',
|
'skin',
|
'camera',
|
'light'
|
|
]).then(function (dependencies) {
|
|
var node;
|
|
// .isBone isn't in glTF spec. See .markDefs
|
if (nodeDef.isBone === true) {
|
|
node = new THREE.Bone();
|
|
} else if (nodeDef.mesh !== undefined) {
|
|
var mesh = dependencies.meshes[nodeDef.mesh];
|
|
node = mesh.clone();
|
|
// for Specular-Glossiness
|
if (mesh.isGroup === true) {
|
|
for (var i = 0, il = mesh.children.length; i < il; i++) {
|
|
var child = mesh.children[i];
|
|
if (child.material && child.material.isGLTFSpecularGlossinessMaterial === true) {
|
|
node.children[i].onBeforeRender = child.onBeforeRender;
|
|
}
|
|
}
|
|
} else {
|
|
if (mesh.material && mesh.material.isGLTFSpecularGlossinessMaterial === true) {
|
|
node.onBeforeRender = mesh.onBeforeRender;
|
|
}
|
|
}
|
|
if (meshReferences[nodeDef.mesh] > 1) {
|
|
node.name += '_instance_' + meshUses[nodeDef.mesh]++;
|
|
}
|
|
} else if (nodeDef.camera !== undefined) {
|
|
node = dependencies.cameras[nodeDef.camera];
|
|
} else if (nodeDef.extensions
|
&& nodeDef.extensions[EXTENSIONS.KHR_LIGHTS]
|
&& nodeDef.extensions[EXTENSIONS.KHR_LIGHTS].light !== undefined) {
|
|
var lights = extensions[EXTENSIONS.KHR_LIGHTS].lights;
|
node = lights[nodeDef.extensions[EXTENSIONS.KHR_LIGHTS].light];
|
|
} else {
|
|
node = new THREE.Object3D();
|
|
}
|
|
if (nodeDef.name !== undefined) {
|
|
node.name = THREE.PropertyBinding.sanitizeNodeName(nodeDef.name);
|
|
}
|
|
if (nodeDef.extras) node.userData = nodeDef.extras;
|
|
if (nodeDef.extensions) addUnknownExtensionsToUserData(extensions, node, nodeDef);
|
|
if (nodeDef.matrix !== undefined) {
|
|
var matrix = new THREE.Matrix4();
|
matrix.fromArray(nodeDef.matrix);
|
node.applyMatrix(matrix);
|
|
} else {
|
|
if (nodeDef.translation !== undefined) {
|
|
node.position.fromArray(nodeDef.translation);
|
|
}
|
|
if (nodeDef.rotation !== undefined) {
|
|
node.quaternion.fromArray(nodeDef.rotation);
|
|
}
|
|
if (nodeDef.scale !== undefined) {
|
|
node.scale.fromArray(nodeDef.scale);
|
|
}
|
|
}
|
|
return node;
|
|
});
|
|
};
|
|
/**
|
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#scenes
|
* @param {number} sceneIndex
|
* @return {Promise<THREE.Scene>}
|
*/
|
GLTFParser.prototype.loadScene = function () {
|
|
// scene node hierachy builder
|
|
function buildNodeHierachy(nodeId, parentObject, json, allNodes, skins) {
|
|
var node = allNodes[nodeId];
|
var nodeDef = json.nodes[nodeId];
|
|
// build skeleton here as well
|
|
if (nodeDef.skin !== undefined) {
|
|
var meshes = node.isGroup === true ? node.children : [node];
|
|
for (var i = 0, il = meshes.length; i < il; i++) {
|
|
var mesh = meshes[i];
|
var skinEntry = skins[nodeDef.skin];
|
|
var bones = [];
|
var boneInverses = [];
|
|
for (var j = 0, jl = skinEntry.joints.length; j < jl; j++) {
|
|
var jointId = skinEntry.joints[j];
|
var jointNode = allNodes[jointId];
|
|
if (jointNode) {
|
|
bones.push(jointNode);
|
|
var mat = new THREE.Matrix4();
|
|
if (skinEntry.inverseBindMatrices !== undefined) {
|
|
mat.fromArray(skinEntry.inverseBindMatrices.array, j * 16);
|
|
}
|
|
boneInverses.push(mat);
|
|
} else {
|
|
console.warn('THREE.GLTFLoader: Joint "%s" could not be found.', jointId);
|
|
}
|
|
}
|
|
mesh.bind(new THREE.Skeleton(bones, boneInverses), mesh.matrixWorld);
|
|
}
|
|
}
|
|
// build node hierachy
|
|
parentObject.add(node);
|
|
if (nodeDef.children) {
|
|
var children = nodeDef.children;
|
|
for (var i = 0, il = children.length; i < il; i++) {
|
|
var child = children[i];
|
buildNodeHierachy(child, node, json, allNodes, skins);
|
|
}
|
|
}
|
|
}
|
|
return function loadScene(sceneIndex) {
|
|
var json = this.json;
|
var extensions = this.extensions;
|
var sceneDef = this.json.scenes[sceneIndex];
|
|
return this.getMultiDependencies([
|
|
'node',
|
'skin'
|
|
]).then(function (dependencies) {
|
|
var scene = new THREE.Scene();
|
if (sceneDef.name !== undefined) scene.name = sceneDef.name;
|
|
if (sceneDef.extras) scene.userData = sceneDef.extras;
|
|
if (sceneDef.extensions) addUnknownExtensionsToUserData(extensions, scene, sceneDef);
|
|
var nodeIds = sceneDef.nodes || [];
|
|
for (var i = 0, il = nodeIds.length; i < il; i++) {
|
|
buildNodeHierachy(nodeIds[i], scene, json, dependencies.nodes, dependencies.skins);
|
|
}
|
|
// Ambient lighting, if present, is always attached to the scene root.
|
if (sceneDef.extensions
|
&& sceneDef.extensions[EXTENSIONS.KHR_LIGHTS]
|
&& sceneDef.extensions[EXTENSIONS.KHR_LIGHTS].light !== undefined) {
|
|
var lights = extensions[EXTENSIONS.KHR_LIGHTS].lights;
|
scene.add(lights[sceneDef.extensions[EXTENSIONS.KHR_LIGHTS].light]);
|
|
}
|
|
return scene;
|
|
});
|
|
};
|
|
}();
|
|
return GLTFLoader;
|
|
})();
|
