mirror of
https://github.com/jiawanlong/Cesium-Examples.git
synced 2025-11-03 16:54:16 +00:00
2800 lines
69 KiB
JavaScript
2800 lines
69 KiB
JavaScript
/**
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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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if ( json.extensionsUsed.indexOf( EXTENSIONS.KHR_LIGHTS ) >= 0 ) {
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extensions[ EXTENSIONS.KHR_LIGHTS ] = new GLTFLightsExtension( json );
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}
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if ( json.extensionsUsed.indexOf( EXTENSIONS.KHR_MATERIALS_UNLIT ) >= 0 ) {
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extensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ] = new GLTFMaterialsUnlitExtension( json );
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}
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if ( json.extensionsUsed.indexOf( EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ) >= 0 ) {
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extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ] = new GLTFMaterialsPbrSpecularGlossinessExtension();
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}
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if ( json.extensionsUsed.indexOf( EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ) >= 0 ) {
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extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ] = new GLTFDracoMeshCompressionExtension( this.dracoLoader );
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}
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}
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console.time( 'GLTFLoader' );
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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, asset ) {
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console.timeEnd( 'GLTFLoader' );
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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: asset
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};
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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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};
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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.position.set( 0, 0, 1 );
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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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lightNode.position.set( 0, 0, 1 );
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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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if ( light.constantAttenuation !== undefined ) {
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lightNode.intensity = light.constantAttenuation;
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}
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if ( light.linearAttenuation !== undefined ) {
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lightNode.distance = 1 / light.linearAttenuation;
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}
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if ( light.quadraticAttenuation !== undefined ) {
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lightNode.decay = light.quadraticAttenuation;
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}
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if ( light.fallOffAngle !== undefined ) {
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lightNode.angle = light.fallOffAngle;
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}
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if ( light.fallOffExponent !== undefined ) {
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console.warn( 'THREE.GLTFLoader:: light.fallOffExponent not currently supported.' );
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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 ( 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.dracoLoader = dracoLoader;
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}
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GLTFDracoMeshCompressionExtension.prototype.decodePrimitive = function ( primitive, parser ) {
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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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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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return parser.getDependency( 'bufferView', bufferViewIndex ).then( function ( bufferView ) {
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return new Promise( function ( resolve ) {
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dracoLoader.decodeDracoFile( bufferView, resolve, threeAttributeMap );
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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( '#include <specularmap_fragment>', '' )
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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 )
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.replace( '#include <lights_physical_fragment>', lightPhysicalFragmentChunk );
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delete uniforms.roughness;
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delete uniforms.metalness;
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delete uniforms.roughnessMap;
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delete uniforms.metalnessMap;
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uniforms.specular = { value: new THREE.Color().setHex( 0x111111 ) };
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uniforms.glossiness = { value: 0.5 };
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uniforms.specularMap = { value: null };
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uniforms.glossinessMap = { value: null };
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params.vertexShader = shader.vertexShader;
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params.fragmentShader = fragmentShader;
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params.uniforms = uniforms;
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params.defines = { 'STANDARD': '' };
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params.color = new THREE.Color( 1.0, 1.0, 1.0 );
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params.opacity = 1.0;
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var pending = [];
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if ( Array.isArray( pbrSpecularGlossiness.diffuseFactor ) ) {
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var array = pbrSpecularGlossiness.diffuseFactor;
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params.color.fromArray( array );
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params.opacity = array[ 3 ];
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|
}
|
|
|
|
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
|
|
} );
|
|
|
|
}
|
|
|
|
/**
|
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#morph-targets
|
|
*
|
|
* @param {THREE.Mesh} mesh
|
|
* @param {GLTF.Mesh} meshDef
|
|
* @param {GLTF.Primitive} primitiveDef
|
|
* @param {Array<THREE.BufferAttribute>} accessors
|
|
*/
|
|
function addMorphTargets( mesh, meshDef, primitiveDef, accessors ) {
|
|
|
|
var geometry = mesh.geometry;
|
|
var material = mesh.material;
|
|
|
|
var targets = primitiveDef.targets;
|
|
var morphAttributes = geometry.morphAttributes;
|
|
|
|
morphAttributes.position = [];
|
|
morphAttributes.normal = [];
|
|
|
|
material.morphTargets = true;
|
|
|
|
for ( var i = 0, il = targets.length; i < il; i ++ ) {
|
|
|
|
var target = targets[ i ];
|
|
var attributeName = 'morphTarget' + i;
|
|
|
|
var positionAttribute, normalAttribute;
|
|
|
|
if ( target.POSITION !== undefined ) {
|
|
|
|
// Three.js morph formula is
|
|
// position
|
|
// + weight0 * ( morphTarget0 - position )
|
|
// + weight1 * ( morphTarget1 - position )
|
|
// ...
|
|
// while the glTF one is
|
|
// position
|
|
// + weight0 * morphTarget0
|
|
// + weight1 * morphTarget1
|
|
// ...
|
|
// then adding position to morphTarget.
|
|
// So morphTarget value will depend on mesh's position, then cloning attribute
|
|
// for the case if attribute is shared among two or more meshes.
|
|
|
|
positionAttribute = cloneBufferAttribute( accessors[ target.POSITION ] );
|
|
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 if ( geometry.attributes.position ) {
|
|
|
|
// Copying the original position not to affect the final position.
|
|
// See the formula above.
|
|
positionAttribute = cloneBufferAttribute( geometry.attributes.position );
|
|
|
|
}
|
|
|
|
if ( positionAttribute !== undefined ) {
|
|
|
|
positionAttribute.name = attributeName;
|
|
morphAttributes.position.push( positionAttribute );
|
|
|
|
}
|
|
|
|
if ( target.NORMAL !== undefined ) {
|
|
|
|
material.morphNormals = true;
|
|
|
|
// see target.POSITION's comment
|
|
|
|
normalAttribute = cloneBufferAttribute( accessors[ target.NORMAL ] );
|
|
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 if ( geometry.attributes.normal !== undefined ) {
|
|
|
|
normalAttribute = cloneBufferAttribute( geometry.attributes.normal );
|
|
|
|
}
|
|
|
|
if ( normalAttribute !== undefined ) {
|
|
|
|
normalAttribute.name = attributeName;
|
|
morphAttributes.normal.push( normalAttribute );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
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 ) ) {
|
|
|
|
for ( var i = 0, il = meshDef.extras.targetNames.length; i < il; i ++ ) {
|
|
|
|
mesh.morphTargetDictionary[ meshDef.extras.targetNames[ i ] ] = i;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function isPrimitiveEqual( a, b ) {
|
|
|
|
if ( a.indices !== b.indices ) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
var attribA = a.attributes || {};
|
|
var attribB = b.attributes || {};
|
|
var keysA = Object.keys( attribA );
|
|
var keysB = Object.keys( attribB );
|
|
|
|
if ( keysA.length !== keysB.length ) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
for ( var i = 0, il = keysA.length; i < il; i ++ ) {
|
|
|
|
var key = keysA[ i ];
|
|
|
|
if ( attribA[ key ] !== attribB[ key ] ) {
|
|
|
|
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 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();
|
|
|
|
}
|
|
|
|
/* 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.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 asset = json.asset;
|
|
var cameras = dependencies.cameras || [];
|
|
|
|
onLoad( scene, scenes, cameras, animations, asset );
|
|
|
|
} ).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 ) {
|
|
|
|
var fnName = 'load' + type.charAt( 0 ).toUpperCase() + type.slice( 1 );
|
|
dependency = this[ fnName ]( index );
|
|
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 ) {
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var parser = this;
|
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var json = this.json;
|
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var options = this.options;
|
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var textureLoader = this.textureLoader;
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|
|
var URL = window.URL || window.webkitURL;
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var textureDef = json.textures[ textureIndex ];
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var source = json.images[ textureDef.source ];
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var sourceURI = source.uri;
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var isObjectURL = false;
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if ( source.bufferView !== undefined ) {
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// Load binary image data from bufferView, if provided.
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sourceURI = parser.getDependency( 'bufferView', source.bufferView ).then( function ( bufferView ) {
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isObjectURL = true;
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var blob = new Blob( [ bufferView ], { type: source.mimeType } );
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sourceURI = URL.createObjectURL( blob );
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return sourceURI;
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} );
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}
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return Promise.resolve( sourceURI ).then( function ( sourceURI ) {
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// Load Texture resource.
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var loader = THREE.Loader.Handlers.get( sourceURI ) || textureLoader;
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return new Promise( function ( resolve, reject ) {
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loader.load( resolveURL( sourceURI, options.path ), resolve, undefined, reject );
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} );
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} ).then( function ( texture ) {
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// Clean up resources and configure Texture.
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if ( isObjectURL === true ) {
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URL.revokeObjectURL( sourceURI );
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}
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texture.flipY = false;
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if ( textureDef.name !== undefined ) texture.name = textureDef.name;
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texture.format = textureDef.format !== undefined ? WEBGL_TEXTURE_FORMATS[ textureDef.format ] : THREE.RGBAFormat;
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if ( textureDef.internalFormat !== undefined && texture.format !== WEBGL_TEXTURE_FORMATS[ textureDef.internalFormat ] ) {
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console.warn( 'THREE.GLTFLoader: Three.js does not support texture internalFormat which is different from texture format. ' +
|
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'internalFormat will be forced to be the same value as format.' );
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}
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texture.type = textureDef.type !== undefined ? WEBGL_TEXTURE_DATATYPES[ textureDef.type ] : THREE.UnsignedByteType;
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var samplers = json.samplers || {};
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var sampler = samplers[ textureDef.sampler ] || {};
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texture.magFilter = WEBGL_FILTERS[ sampler.magFilter ] || THREE.LinearFilter;
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texture.minFilter = WEBGL_FILTERS[ sampler.minFilter ] || THREE.LinearMipMapLinearFilter;
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texture.wrapS = WEBGL_WRAPPINGS[ sampler.wrapS ] || THREE.RepeatWrapping;
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texture.wrapT = WEBGL_WRAPPINGS[ sampler.wrapT ] || THREE.RepeatWrapping;
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return texture;
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} );
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};
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/**
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* Asynchronously assigns a texture to the given material parameters.
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* @param {Object} materialParams
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* @param {string} textureName
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* @param {number} textureIndex
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* @return {Promise}
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*/
|
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GLTFParser.prototype.assignTexture = function ( materialParams, textureName, textureIndex ) {
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return this.getDependency( 'texture', textureIndex ).then( function ( texture ) {
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materialParams[ textureName ] = texture;
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} );
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};
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/**
|
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
|
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* @param {number} materialIndex
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* @return {Promise<THREE.Material>}
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*/
|
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GLTFParser.prototype.loadMaterial = function ( materialIndex ) {
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var parser = this;
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var json = this.json;
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var extensions = this.extensions;
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var materialDef = this.json.materials[ materialIndex ];
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var materialType;
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var materialParams = {};
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var materialExtensions = materialDef.extensions || {};
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var pending = [];
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if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ] ) {
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var sgExtension = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ];
|
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materialType = sgExtension.getMaterialType( materialDef );
|
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pending.push( sgExtension.extendParams( materialParams, materialDef, parser ) );
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} else if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ] ) {
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var kmuExtension = extensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ];
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materialType = kmuExtension.getMaterialType( materialDef );
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pending.push( kmuExtension.extendParams( materialParams, materialDef, parser ) );
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} else if ( materialDef.pbrMetallicRoughness !== undefined ) {
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// Specification:
|
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// https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#metallic-roughness-material
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|
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materialType = THREE.MeshStandardMaterial;
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var metallicRoughness = materialDef.pbrMetallicRoughness;
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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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if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
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var array = metallicRoughness.baseColorFactor;
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|
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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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|
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pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture.index ) );
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}
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materialParams.metalness = metallicRoughness.metallicFactor !== undefined ? metallicRoughness.metallicFactor : 1.0;
|
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materialParams.roughness = metallicRoughness.roughnessFactor !== undefined ? metallicRoughness.roughnessFactor : 1.0;
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|
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if ( metallicRoughness.metallicRoughnessTexture !== undefined ) {
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|
|
|
var textureIndex = metallicRoughness.metallicRoughnessTexture.index;
|
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pending.push( parser.assignTexture( materialParams, 'metalnessMap', textureIndex ) );
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|
pending.push( parser.assignTexture( materialParams, 'roughnessMap', textureIndex ) );
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|
}
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} else {
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materialType = THREE.MeshPhongMaterial;
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|
}
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if ( materialDef.doubleSided === true ) {
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materialParams.side = THREE.DoubleSide;
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|
}
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|
var alphaMode = materialDef.alphaMode || ALPHA_MODES.OPAQUE;
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|
if ( alphaMode === ALPHA_MODES.BLEND ) {
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|
materialParams.transparent = true;
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|
} else {
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materialParams.transparent = false;
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|
|
if ( alphaMode === ALPHA_MODES.MASK ) {
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|
|
materialParams.alphaTest = materialDef.alphaCutoff !== undefined ? materialDef.alphaCutoff : 0.5;
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|
}
|
|
|
|
}
|
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|
|
if ( materialDef.normalTexture !== undefined && materialType !== THREE.MeshBasicMaterial) {
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|
pending.push( parser.assignTexture( materialParams, 'normalMap', materialDef.normalTexture.index ) );
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materialParams.normalScale = new THREE.Vector2( 1, 1 );
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|
if ( materialDef.normalTexture.scale !== undefined ) {
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|
|
materialParams.normalScale.set( materialDef.normalTexture.scale, materialDef.normalTexture.scale );
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|
|
}
|
|
|
|
}
|
|
|
|
if ( materialDef.occlusionTexture !== undefined && materialType !== THREE.MeshBasicMaterial) {
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|
|
|
pending.push( parser.assignTexture( materialParams, 'aoMap', materialDef.occlusionTexture.index ) );
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|
|
|
if ( materialDef.occlusionTexture.strength !== undefined ) {
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|
|
|
materialParams.aoMapIntensity = materialDef.occlusionTexture.strength;
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|
|
}
|
|
|
|
}
|
|
|
|
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;
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|
|
if ( materialType === THREE.ShaderMaterial ) {
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|
|
material = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ].createMaterial( materialParams );
|
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|
|
} 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.x = - material.normalScale.x;
|
|
|
|
}
|
|
|
|
// emissiveTexture and baseColorTexture use sRGB encoding.
|
|
if ( material.map ) material.map.encoding = THREE.sRGBEncoding;
|
|
if ( material.emissiveMap ) material.emissiveMap.encoding = THREE.sRGBEncoding;
|
|
|
|
if ( materialDef.extras ) material.userData = materialDef.extras;
|
|
|
|
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 ] );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#geometry
|
|
* @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;
|
|
|
|
return this.getDependencies( 'accessor' ).then( function ( accessors ) {
|
|
|
|
var geometries = [];
|
|
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 );
|
|
|
|
var geometry;
|
|
|
|
if ( cached ) {
|
|
|
|
// Use the cached geometry if it exists
|
|
pending.push( cached.then( function ( geometry ) {
|
|
|
|
geometries.push( geometry );
|
|
|
|
} ) );
|
|
|
|
} 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 );
|
|
|
|
geometries.push( geometry );
|
|
|
|
return geometry;
|
|
|
|
} );
|
|
|
|
cache.push( { primitive: primitive, promise: geometryPromise } );
|
|
|
|
pending.push( geometryPromise );
|
|
|
|
} else {
|
|
|
|
// Otherwise create a new geometry
|
|
geometry = new THREE.BufferGeometry();
|
|
|
|
addPrimitiveAttributes( geometry, primitive, accessors );
|
|
|
|
// Cache this geometry
|
|
cache.push( {
|
|
|
|
primitive: primitive,
|
|
promise: Promise.resolve( geometry )
|
|
|
|
} );
|
|
|
|
geometries.push( geometry );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return Promise.all( pending ).then( function () {
|
|
|
|
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 group = new THREE.Group();
|
|
|
|
var primitives = meshDef.primitives;
|
|
|
|
return scope.loadGeometries( primitives ).then( function ( geometries ) {
|
|
|
|
for ( var i = 0, il = primitives.length; i < il; i ++ ) {
|
|
|
|
var primitive = primitives[ i ];
|
|
var geometry = geometries[ i ];
|
|
|
|
var material = primitive.material === undefined
|
|
? createDefaultMaterial()
|
|
: dependencies.materials[ primitive.material ];
|
|
|
|
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 the material will be modified later on, clone it now.
|
|
var useVertexColors = geometry.attributes.color !== undefined;
|
|
var useFlatShading = geometry.attributes.normal === undefined;
|
|
var useSkinning = meshDef.isSkinnedMesh === true;
|
|
var useMorphTargets = primitive.targets !== undefined;
|
|
|
|
if ( useVertexColors || useFlatShading || useSkinning || useMorphTargets ) {
|
|
|
|
if ( material.isGLTFSpecularGlossinessMaterial ) {
|
|
|
|
var specGlossExtension = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ];
|
|
material = specGlossExtension.cloneMaterial( material );
|
|
|
|
} else {
|
|
|
|
material = material.clone();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if ( useVertexColors ) {
|
|
|
|
material.vertexColors = THREE.VertexColors;
|
|
material.needsUpdate = true;
|
|
|
|
}
|
|
|
|
if ( useFlatShading ) {
|
|
|
|
material.flatShading = true;
|
|
|
|
}
|
|
|
|
var mesh;
|
|
|
|
if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLES ||
|
|
primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP ||
|
|
primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ||
|
|
primitive.mode === undefined ) {
|
|
|
|
if ( useSkinning ) {
|
|
|
|
mesh = new THREE.SkinnedMesh( geometry, material );
|
|
material.skinning = true;
|
|
|
|
} else {
|
|
|
|
mesh = 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 ||
|
|
primitive.mode === WEBGL_CONSTANTS.LINE_STRIP ||
|
|
primitive.mode === WEBGL_CONSTANTS.LINE_LOOP ) {
|
|
|
|
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;
|
|
|
|
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 {
|
|
|
|
mesh = new THREE.LineLoop( geometry, material );
|
|
|
|
}
|
|
|
|
} else if ( primitive.mode === WEBGL_CONSTANTS.POINTS ) {
|
|
|
|
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;
|
|
|
|
mesh = new THREE.Points( geometry, material );
|
|
|
|
} else {
|
|
|
|
throw new Error( 'THREE.GLTFLoader: Primitive mode unsupported: ' + primitive.mode );
|
|
|
|
}
|
|
|
|
mesh.name = meshDef.name || ( 'mesh_' + meshIndex );
|
|
|
|
if ( useMorphTargets ) {
|
|
|
|
addMorphTargets( mesh, meshDef, primitive, dependencies.accessors );
|
|
|
|
}
|
|
|
|
if ( meshDef.extras !== undefined ) mesh.userData = meshDef.extras;
|
|
if ( primitive.extras !== undefined ) mesh.geometry.userData = primitive.extras;
|
|
|
|
// for Specular-Glossiness.
|
|
if ( material.isGLTFSpecularGlossinessMaterial === true ) {
|
|
|
|
mesh.onBeforeRender = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ].refreshUniforms;
|
|
|
|
}
|
|
|
|
if ( primitives.length > 1 ) {
|
|
|
|
mesh.name += '_' + i;
|
|
|
|
group.add( mesh );
|
|
|
|
} else {
|
|
|
|
return mesh;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
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' ) {
|
|
|
|
var aspectRatio = params.aspectRatio || 1;
|
|
var xfov = params.yfov * aspectRatio;
|
|
|
|
camera = new THREE.PerspectiveCamera( THREE.Math.radToDeg( xfov ), aspectRatio, 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 should be THREE.Group here but
|
|
// PATH_PROPERTIES.weights(morphTargetInfluences) should be
|
|
// the property of a mesh object under node.
|
|
// So finding targets here.
|
|
|
|
node.traverse( function ( object ) {
|
|
|
|
if ( object.isMesh === true && object.material.morphTargets === true ) {
|
|
|
|
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'
|
|
|
|
] ).then( function ( dependencies ) {
|
|
|
|
var node;
|
|
|
|
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.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;
|
|
|
|
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;
|
|
|
|
} )();
|