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web3d / node_modules /three /examples /js /loaders /deprecated /LegacyGLTFLoader.js
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/**
* @author Rich Tibbett / https://github.com/richtr
* @author mrdoob / http://mrdoob.com/
* @author Tony Parisi / http://www.tonyparisi.com/
* @author Takahiro / https://github.com/takahirox
*/
THREE.LegacyGLTFLoader = ( function () {
function LegacyGLTFLoader( manager ) {
this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
}
LegacyGLTFLoader.prototype = {
constructor: LegacyGLTFLoader,
crossOrigin: 'anonymous',
load: function ( url, onLoad, onProgress, onError ) {
var scope = this;
var resourcePath;
if ( this.resourcePath !== undefined ) {
resourcePath = this.resourcePath;
} else if ( this.path !== undefined ) {
resourcePath = this.path;
} else {
resourcePath = THREE.LoaderUtils.extractUrlBase( url );
}
var loader = new THREE.FileLoader( scope.manager );
loader.setPath( this.path );
loader.setResponseType( 'arraybuffer' );
loader.load( url, function ( data ) {
scope.parse( data, resourcePath, onLoad );
}, onProgress, onError );
},
setCrossOrigin: function ( value ) {
this.crossOrigin = value;
return this;
},
setPath: function ( value ) {
this.path = value;
},
setResourcePath: function ( value ) {
this.resourcePath = value;
return this;
},
parse: function ( data, path, callback ) {
var content;
var extensions = {};
var magic = THREE.LoaderUtils.decodeText( new Uint8Array( data, 0, 4 ) );
if ( magic === BINARY_EXTENSION_HEADER_DEFAULTS.magic ) {
extensions[ EXTENSIONS.KHR_BINARY_GLTF ] = new GLTFBinaryExtension( data );
content = extensions[ EXTENSIONS.KHR_BINARY_GLTF ].content;
} else {
content = THREE.LoaderUtils.decodeText( new Uint8Array( data ) );
}
var json = JSON.parse( content );
if ( json.extensionsUsed && json.extensionsUsed.indexOf( EXTENSIONS.KHR_MATERIALS_COMMON ) >= 0 ) {
extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ] = new GLTFMaterialsCommonExtension( json );
}
var parser = new GLTFParser( json, extensions, {
crossOrigin: this.crossOrigin,
manager: this.manager,
path: path || this.resourcePath || ''
} );
parser.parse( function ( scene, scenes, cameras, animations ) {
var glTF = {
"scene": scene,
"scenes": scenes,
"cameras": cameras,
"animations": animations
};
callback( glTF );
} );
}
};
/* GLTFREGISTRY */
function GLTFRegistry() {
var objects = {};
return {
get: function ( key ) {
return objects[ key ];
},
add: function ( key, object ) {
objects[ key ] = object;
},
remove: function ( key ) {
delete objects[ key ];
},
removeAll: function () {
objects = {};
},
update: function ( scene, camera ) {
for ( var name in objects ) {
var object = objects[ name ];
if ( object.update ) {
object.update( scene, camera );
}
}
}
};
}
/* GLTFSHADERS */
LegacyGLTFLoader.Shaders = {
update: function () {
console.warn( 'THREE.LegacyGLTFLoader.Shaders has been deprecated, and now updates automatically.' );
}
};
/* GLTFSHADER */
function GLTFShader( targetNode, allNodes ) {
var boundUniforms = {};
// bind each uniform to its source node
var uniforms = targetNode.material.uniforms;
for ( var uniformId in uniforms ) {
var uniform = uniforms[ uniformId ];
if ( uniform.semantic ) {
var sourceNodeRef = uniform.node;
var sourceNode = targetNode;
if ( sourceNodeRef ) {
sourceNode = allNodes[ sourceNodeRef ];
}
boundUniforms[ uniformId ] = {
semantic: uniform.semantic,
sourceNode: sourceNode,
targetNode: targetNode,
uniform: uniform
};
}
}
this.boundUniforms = boundUniforms;
this._m4 = new THREE.Matrix4();
}
// Update - update all the uniform values
GLTFShader.prototype.update = function ( scene, camera ) {
var boundUniforms = this.boundUniforms;
for ( var name in boundUniforms ) {
var boundUniform = boundUniforms[ name ];
switch ( boundUniform.semantic ) {
case "MODELVIEW":
var m4 = boundUniform.uniform.value;
m4.multiplyMatrices( camera.matrixWorldInverse, boundUniform.sourceNode.matrixWorld );
break;
case "MODELVIEWINVERSETRANSPOSE":
var m3 = boundUniform.uniform.value;
this._m4.multiplyMatrices( camera.matrixWorldInverse, boundUniform.sourceNode.matrixWorld );
m3.getNormalMatrix( this._m4 );
break;
case "PROJECTION":
var m4 = boundUniform.uniform.value;
m4.copy( camera.projectionMatrix );
break;
case "JOINTMATRIX":
var m4v = boundUniform.uniform.value;
for ( var mi = 0; mi < m4v.length; mi ++ ) {
// So it goes like this:
// SkinnedMesh world matrix is already baked into MODELVIEW;
// transform joints to local space,
// then transform using joint's inverse
m4v[ mi ]
.getInverse( boundUniform.sourceNode.matrixWorld )
.multiply( boundUniform.targetNode.skeleton.bones[ mi ].matrixWorld )
.multiply( boundUniform.targetNode.skeleton.boneInverses[ mi ] )
.multiply( boundUniform.targetNode.bindMatrix );
}
break;
default :
console.warn( "Unhandled shader semantic: " + boundUniform.semantic );
break;
}
}
};
/* ANIMATION */
LegacyGLTFLoader.Animations = {
update: function () {
console.warn( 'THREE.LegacyGLTFLoader.Animation has been deprecated. Use THREE.AnimationMixer instead.' );
}
};
/*********************************/
/********** EXTENSIONS ***********/
/*********************************/
var EXTENSIONS = {
KHR_BINARY_GLTF: 'KHR_binary_glTF',
KHR_MATERIALS_COMMON: 'KHR_materials_common'
};
/* MATERIALS COMMON EXTENSION */
function GLTFMaterialsCommonExtension( json ) {
this.name = EXTENSIONS.KHR_MATERIALS_COMMON;
this.lights = {};
var extension = ( json.extensions && json.extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ] ) || {};
var lights = extension.lights || {};
for ( var lightId in lights ) {
var light = lights[ lightId ];
var lightNode;
var lightParams = light[ light.type ];
var color = new THREE.Color().fromArray( lightParams.color );
switch ( light.type ) {
case "directional":
lightNode = new THREE.DirectionalLight( color );
lightNode.position.set( 0, 0, 1 );
break;
case "point":
lightNode = new THREE.PointLight( color );
break;
case "spot":
lightNode = new THREE.SpotLight( color );
lightNode.position.set( 0, 0, 1 );
break;
case "ambient":
lightNode = new THREE.AmbientLight( color );
break;
}
if ( lightNode ) {
this.lights[ lightId ] = lightNode;
}
}
}
/* BINARY EXTENSION */
var BINARY_EXTENSION_BUFFER_NAME = 'binary_glTF';
var BINARY_EXTENSION_HEADER_DEFAULTS = { magic: 'glTF', version: 1, contentFormat: 0 };
var BINARY_EXTENSION_HEADER_LENGTH = 20;
function GLTFBinaryExtension( data ) {
this.name = EXTENSIONS.KHR_BINARY_GLTF;
var headerView = new DataView( data, 0, BINARY_EXTENSION_HEADER_LENGTH );
var header = {
magic: THREE.LoaderUtils.decodeText( new Uint8Array( data.slice( 0, 4 ) ) ),
version: headerView.getUint32( 4, true ),
length: headerView.getUint32( 8, true ),
contentLength: headerView.getUint32( 12, true ),
contentFormat: headerView.getUint32( 16, true )
};
for ( var key in BINARY_EXTENSION_HEADER_DEFAULTS ) {
var value = BINARY_EXTENSION_HEADER_DEFAULTS[ key ];
if ( header[ key ] !== value ) {
throw new Error( 'Unsupported glTF-Binary header: Expected "%s" to be "%s".', key, value );
}
}
var contentArray = new Uint8Array( data, BINARY_EXTENSION_HEADER_LENGTH, header.contentLength );
this.header = header;
this.content = THREE.LoaderUtils.decodeText( contentArray );
this.body = data.slice( BINARY_EXTENSION_HEADER_LENGTH + header.contentLength, header.length );
}
GLTFBinaryExtension.prototype.loadShader = function ( shader, bufferViews ) {
var bufferView = bufferViews[ shader.extensions[ EXTENSIONS.KHR_BINARY_GLTF ].bufferView ];
var array = new Uint8Array( bufferView );
return THREE.LoaderUtils.decodeText( array );
};
/*********************************/
/********** 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,
TRIANGLES: 4,
LINES: 1,
UNSIGNED_BYTE: 5121,
UNSIGNED_SHORT: 5123,
VERTEX_SHADER: 35633,
FRAGMENT_SHADER: 35632
};
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 PATH_PROPERTIES = {
scale: 'scale',
translation: 'position',
rotation: 'quaternion'
};
var INTERPOLATION = {
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'
};
/* UTILITY FUNCTIONS */
function _each( object, callback, thisObj ) {
if ( ! object ) {
return Promise.resolve();
}
var results;
var fns = [];
if ( Object.prototype.toString.call( object ) === '[object Array]' ) {
results = [];
var length = object.length;
for ( var idx = 0; idx < length; idx ++ ) {
var value = callback.call( thisObj || this, object[ idx ], idx );
if ( value ) {
fns.push( value );
if ( value instanceof Promise ) {
value.then( function ( key, value ) {
results[ key ] = value;
}.bind( this, idx ) );
} else {
results[ idx ] = value;
}
}
}
} else {
results = {};
for ( var key in object ) {
if ( object.hasOwnProperty( key ) ) {
var value = callback.call( thisObj || this, object[ key ], key );
if ( value ) {
fns.push( value );
if ( value instanceof Promise ) {
value.then( function ( key, value ) {
results[ key ] = value;
}.bind( this, key ) );
} else {
results[ key ] = value;
}
}
}
}
}
return Promise.all( fns ).then( function () {
return results;
} );
}
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;
}
// Three.js seems too dependent on attribute names so globally
// replace those in the shader code
function replaceTHREEShaderAttributes( shaderText, technique ) {
// Expected technique attributes
var attributes = {};
for ( var attributeId in technique.attributes ) {
var pname = technique.attributes[ attributeId ];
var param = technique.parameters[ pname ];
var atype = param.type;
var semantic = param.semantic;
attributes[ attributeId ] = {
type: atype,
semantic: semantic
};
}
// Figure out which attributes to change in technique
var shaderParams = technique.parameters;
var shaderAttributes = technique.attributes;
var params = {};
for ( var attributeId in attributes ) {
var pname = shaderAttributes[ attributeId ];
var shaderParam = shaderParams[ pname ];
var semantic = shaderParam.semantic;
if ( semantic ) {
params[ attributeId ] = shaderParam;
}
}
for ( var pname in params ) {
var param = params[ pname ];
var semantic = param.semantic;
var regEx = new RegExp( "\\b" + pname + "\\b", "g" );
switch ( semantic ) {
case "POSITION":
shaderText = shaderText.replace( regEx, 'position' );
break;
case "NORMAL":
shaderText = shaderText.replace( regEx, 'normal' );
break;
case 'TEXCOORD_0':
case 'TEXCOORD0':
case 'TEXCOORD':
shaderText = shaderText.replace( regEx, 'uv' );
break;
case 'TEXCOORD_1':
shaderText = shaderText.replace( regEx, 'uv2' );
break;
case 'COLOR_0':
case 'COLOR0':
case 'COLOR':
shaderText = shaderText.replace( regEx, 'color' );
break;
case "WEIGHT":
shaderText = shaderText.replace( regEx, 'skinWeight' );
break;
case "JOINT":
shaderText = shaderText.replace( regEx, 'skinIndex' );
break;
}
}
return shaderText;
}
function createDefaultMaterial() {
return new THREE.MeshPhongMaterial( {
color: 0x00000,
emissive: 0x888888,
specular: 0x000000,
shininess: 0,
transparent: false,
depthTest: true,
side: THREE.FrontSide
} );
}
// Deferred constructor for RawShaderMaterial types
function DeferredShaderMaterial( params ) {
this.isDeferredShaderMaterial = true;
this.params = params;
}
DeferredShaderMaterial.prototype.create = function () {
var uniforms = THREE.UniformsUtils.clone( this.params.uniforms );
for ( var uniformId in this.params.uniforms ) {
var originalUniform = this.params.uniforms[ uniformId ];
if ( originalUniform.value instanceof THREE.Texture ) {
uniforms[ uniformId ].value = originalUniform.value;
uniforms[ uniformId ].value.needsUpdate = true;
}
uniforms[ uniformId ].semantic = originalUniform.semantic;
uniforms[ uniformId ].node = originalUniform.node;
}
this.params.uniforms = uniforms;
return new THREE.RawShaderMaterial( this.params );
};
/* GLTF PARSER */
function GLTFParser( json, extensions, options ) {
this.json = json || {};
this.extensions = extensions || {};
this.options = options || {};
// loader object cache
this.cache = new GLTFRegistry();
}
GLTFParser.prototype._withDependencies = function ( dependencies ) {
var _dependencies = {};
for ( var i = 0; i < dependencies.length; i ++ ) {
var dependency = dependencies[ i ];
var fnName = "load" + dependency.charAt( 0 ).toUpperCase() + dependency.slice( 1 );
var cached = this.cache.get( dependency );
if ( cached !== undefined ) {
_dependencies[ dependency ] = cached;
} else if ( this[ fnName ] ) {
var fn = this[ fnName ]();
this.cache.add( dependency, fn );
_dependencies[ dependency ] = fn;
}
}
return _each( _dependencies, function ( dependency ) {
return dependency;
} );
};
GLTFParser.prototype.parse = function ( callback ) {
var json = this.json;
// Clear the loader cache
this.cache.removeAll();
// Fire the callback on complete
this._withDependencies( [
"scenes",
"cameras",
"animations"
] ).then( function ( dependencies ) {
var scenes = [];
for ( var name in dependencies.scenes ) {
scenes.push( dependencies.scenes[ name ] );
}
var scene = json.scene !== undefined ? dependencies.scenes[ json.scene ] : scenes[ 0 ];
var cameras = [];
for ( var name in dependencies.cameras ) {
var camera = dependencies.cameras[ name ];
cameras.push( camera );
}
var animations = [];
for ( var name in dependencies.animations ) {
animations.push( dependencies.animations[ name ] );
}
callback( scene, scenes, cameras, animations );
} );
};
GLTFParser.prototype.loadShaders = function () {
var json = this.json;
var extensions = this.extensions;
var options = this.options;
return this._withDependencies( [
"bufferViews"
] ).then( function ( dependencies ) {
return _each( json.shaders, function ( shader ) {
if ( shader.extensions && shader.extensions[ EXTENSIONS.KHR_BINARY_GLTF ] ) {
return extensions[ EXTENSIONS.KHR_BINARY_GLTF ].loadShader( shader, dependencies.bufferViews );
}
return new Promise( function ( resolve ) {
var loader = new THREE.FileLoader( options.manager );
loader.setResponseType( 'text' );
loader.load( resolveURL( shader.uri, options.path ), function ( shaderText ) {
resolve( shaderText );
} );
} );
} );
} );
};
GLTFParser.prototype.loadBuffers = function () {
var json = this.json;
var extensions = this.extensions;
var options = this.options;
return _each( json.buffers, function ( buffer, name ) {
if ( name === BINARY_EXTENSION_BUFFER_NAME ) {
return extensions[ EXTENSIONS.KHR_BINARY_GLTF ].body;
}
if ( buffer.type === 'arraybuffer' || buffer.type === undefined ) {
return new Promise( function ( resolve ) {
var loader = new THREE.FileLoader( options.manager );
loader.setResponseType( 'arraybuffer' );
loader.load( resolveURL( buffer.uri, options.path ), function ( buffer ) {
resolve( buffer );
} );
} );
} else {
console.warn( 'THREE.LegacyGLTFLoader: ' + buffer.type + ' buffer type is not supported' );
}
} );
};
GLTFParser.prototype.loadBufferViews = function () {
var json = this.json;
return this._withDependencies( [
"buffers"
] ).then( function ( dependencies ) {
return _each( json.bufferViews, function ( bufferView ) {
var arraybuffer = dependencies.buffers[ bufferView.buffer ];
var byteLength = bufferView.byteLength !== undefined ? bufferView.byteLength : 0;
return arraybuffer.slice( bufferView.byteOffset, bufferView.byteOffset + byteLength );
} );
} );
};
GLTFParser.prototype.loadAccessors = function () {
var json = this.json;
return this._withDependencies( [
"bufferViews"
] ).then( function ( dependencies ) {
return _each( json.accessors, function ( accessor ) {
var arraybuffer = dependencies.bufferViews[ accessor.bufferView ];
var itemSize = WEBGL_TYPE_SIZES[ accessor.type ];
var TypedArray = WEBGL_COMPONENT_TYPES[ accessor.componentType ];
// For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.
var elementBytes = TypedArray.BYTES_PER_ELEMENT;
var itemBytes = elementBytes * itemSize;
// The buffer is not interleaved if the stride is the item size in bytes.
if ( accessor.byteStride && accessor.byteStride !== itemBytes ) {
// Use the full buffer if it's interleaved.
var array = new TypedArray( arraybuffer );
// Integer parameters to IB/IBA are in array elements, not bytes.
var ib = new THREE.InterleavedBuffer( array, accessor.byteStride / elementBytes );
return new THREE.InterleavedBufferAttribute( ib, itemSize, accessor.byteOffset / elementBytes );
} else {
array = new TypedArray( arraybuffer, accessor.byteOffset, accessor.count * itemSize );
return new THREE.BufferAttribute( array, itemSize );
}
} );
} );
};
GLTFParser.prototype.loadTextures = function () {
var json = this.json;
var extensions = this.extensions;
var options = this.options;
return this._withDependencies( [
"bufferViews"
] ).then( function ( dependencies ) {
return _each( json.textures, function ( texture ) {
if ( texture.source ) {
return new Promise( function ( resolve ) {
var source = json.images[ texture.source ];
var sourceUri = source.uri;
var isObjectURL = false;
if ( source.extensions && source.extensions[ EXTENSIONS.KHR_BINARY_GLTF ] ) {
var metadata = source.extensions[ EXTENSIONS.KHR_BINARY_GLTF ];
var bufferView = dependencies.bufferViews[ metadata.bufferView ];
var blob = new Blob( [ bufferView ], { type: metadata.mimeType } );
sourceUri = URL.createObjectURL( blob );
isObjectURL = true;
}
var textureLoader = THREE.Loader.Handlers.get( sourceUri );
if ( textureLoader === null ) {
textureLoader = new THREE.TextureLoader( options.manager );
}
textureLoader.setCrossOrigin( options.crossOrigin );
textureLoader.load( resolveURL( sourceUri, options.path ), function ( _texture ) {
if ( isObjectURL ) URL.revokeObjectURL( sourceUri );
_texture.flipY = false;
if ( texture.name !== undefined ) _texture.name = texture.name;
_texture.format = texture.format !== undefined ? WEBGL_TEXTURE_FORMATS[ texture.format ] : THREE.RGBAFormat;
if ( texture.internalFormat !== undefined && _texture.format !== WEBGL_TEXTURE_FORMATS[ texture.internalFormat ] ) {
console.warn( 'THREE.LegacyGLTFLoader: Three.js doesn\'t support texture internalFormat which is different from texture format. ' +
'internalFormat will be forced to be the same value as format.' );
}
_texture.type = texture.type !== undefined ? WEBGL_TEXTURE_DATATYPES[ texture.type ] : THREE.UnsignedByteType;
if ( texture.sampler ) {
var sampler = json.samplers[ texture.sampler ];
_texture.magFilter = WEBGL_FILTERS[ sampler.magFilter ] || THREE.LinearFilter;
_texture.minFilter = WEBGL_FILTERS[ sampler.minFilter ] || THREE.NearestMipMapLinearFilter;
_texture.wrapS = WEBGL_WRAPPINGS[ sampler.wrapS ] || THREE.RepeatWrapping;
_texture.wrapT = WEBGL_WRAPPINGS[ sampler.wrapT ] || THREE.RepeatWrapping;
}
resolve( _texture );
}, undefined, function () {
if ( isObjectURL ) URL.revokeObjectURL( sourceUri );
resolve();
} );
} );
}
} );
} );
};
GLTFParser.prototype.loadMaterials = function () {
var json = this.json;
return this._withDependencies( [
"shaders",
"textures"
] ).then( function ( dependencies ) {
return _each( json.materials, function ( material ) {
var materialType;
var materialValues = {};
var materialParams = {};
var khr_material;
if ( material.extensions && material.extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ] ) {
khr_material = material.extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ];
}
if ( khr_material ) {
// don't copy over unused values to avoid material warning spam
var keys = [ 'ambient', 'emission', 'transparent', 'transparency', 'doubleSided' ];
switch ( khr_material.technique ) {
case 'BLINN' :
case 'PHONG' :
materialType = THREE.MeshPhongMaterial;
keys.push( 'diffuse', 'specular', 'shininess' );
break;
case 'LAMBERT' :
materialType = THREE.MeshLambertMaterial;
keys.push( 'diffuse' );
break;
case 'CONSTANT' :
default :
materialType = THREE.MeshBasicMaterial;
break;
}
keys.forEach( function ( v ) {
if ( khr_material.values[ v ] !== undefined ) materialValues[ v ] = khr_material.values[ v ];
} );
if ( khr_material.doubleSided || materialValues.doubleSided ) {
materialParams.side = THREE.DoubleSide;
}
if ( khr_material.transparent || materialValues.transparent ) {
materialParams.transparent = true;
materialParams.opacity = ( materialValues.transparency !== undefined ) ? materialValues.transparency : 1;
}
} else if ( material.technique === undefined ) {
materialType = THREE.MeshPhongMaterial;
Object.assign( materialValues, material.values );
} else {
materialType = DeferredShaderMaterial;
var technique = json.techniques[ material.technique ];
materialParams.uniforms = {};
var program = json.programs[ technique.program ];
if ( program ) {
materialParams.fragmentShader = dependencies.shaders[ program.fragmentShader ];
if ( ! materialParams.fragmentShader ) {
console.warn( "ERROR: Missing fragment shader definition:", program.fragmentShader );
materialType = THREE.MeshPhongMaterial;
}
var vertexShader = dependencies.shaders[ program.vertexShader ];
if ( ! vertexShader ) {
console.warn( "ERROR: Missing vertex shader definition:", program.vertexShader );
materialType = THREE.MeshPhongMaterial;
}
// IMPORTANT: FIX VERTEX SHADER ATTRIBUTE DEFINITIONS
materialParams.vertexShader = replaceTHREEShaderAttributes( vertexShader, technique );
var uniforms = technique.uniforms;
for ( var uniformId in uniforms ) {
var pname = uniforms[ uniformId ];
var shaderParam = technique.parameters[ pname ];
var ptype = shaderParam.type;
if ( WEBGL_TYPE[ ptype ] ) {
var pcount = shaderParam.count;
var value;
if ( material.values !== undefined ) value = material.values[ pname ];
var uvalue = new WEBGL_TYPE[ ptype ]();
var usemantic = shaderParam.semantic;
var unode = shaderParam.node;
switch ( ptype ) {
case WEBGL_CONSTANTS.FLOAT:
uvalue = shaderParam.value;
if ( pname == "transparency" ) {
materialParams.transparent = true;
}
if ( value !== undefined ) {
uvalue = value;
}
break;
case WEBGL_CONSTANTS.FLOAT_VEC2:
case WEBGL_CONSTANTS.FLOAT_VEC3:
case WEBGL_CONSTANTS.FLOAT_VEC4:
case WEBGL_CONSTANTS.FLOAT_MAT3:
if ( shaderParam && shaderParam.value ) {
uvalue.fromArray( shaderParam.value );
}
if ( value ) {
uvalue.fromArray( value );
}
break;
case WEBGL_CONSTANTS.FLOAT_MAT2:
// what to do?
console.warn( "FLOAT_MAT2 is not a supported uniform type" );
break;
case WEBGL_CONSTANTS.FLOAT_MAT4:
if ( pcount ) {
uvalue = new Array( pcount );
for ( var mi = 0; mi < pcount; mi ++ ) {
uvalue[ mi ] = new WEBGL_TYPE[ ptype ]();
}
if ( shaderParam && shaderParam.value ) {
var m4v = shaderParam.value;
uvalue.fromArray( m4v );
}
if ( value ) {
uvalue.fromArray( value );
}
} else {
if ( shaderParam && shaderParam.value ) {
var m4 = shaderParam.value;
uvalue.fromArray( m4 );
}
if ( value ) {
uvalue.fromArray( value );
}
}
break;
case WEBGL_CONSTANTS.SAMPLER_2D:
if ( value !== undefined ) {
uvalue = dependencies.textures[ value ];
} else if ( shaderParam.value !== undefined ) {
uvalue = dependencies.textures[ shaderParam.value ];
} else {
uvalue = null;
}
break;
}
materialParams.uniforms[ uniformId ] = {
value: uvalue,
semantic: usemantic,
node: unode
};
} else {
throw new Error( "Unknown shader uniform param type: " + ptype );
}
}
var states = technique.states || {};
var enables = states.enable || [];
var functions = states.functions || {};
var enableCullFace = false;
var enableDepthTest = false;
var enableBlend = false;
for ( var i = 0, il = enables.length; i < il; i ++ ) {
var enable = enables[ i ];
switch ( STATES_ENABLES[ enable ] ) {
case 'CULL_FACE':
enableCullFace = true;
break;
case 'DEPTH_TEST':
enableDepthTest = true;
break;
case 'BLEND':
enableBlend = true;
break;
// TODO: implement
case 'SCISSOR_TEST':
case 'POLYGON_OFFSET_FILL':
case 'SAMPLE_ALPHA_TO_COVERAGE':
break;
default:
throw new Error( "Unknown technique.states.enable: " + enable );
}
}
if ( enableCullFace ) {
materialParams.side = functions.cullFace !== undefined ? WEBGL_SIDES[ functions.cullFace ] : THREE.FrontSide;
} else {
materialParams.side = THREE.DoubleSide;
}
materialParams.depthTest = enableDepthTest;
materialParams.depthFunc = functions.depthFunc !== undefined ? WEBGL_DEPTH_FUNCS[ functions.depthFunc ] : THREE.LessDepth;
materialParams.depthWrite = functions.depthMask !== undefined ? functions.depthMask[ 0 ] : true;
materialParams.blending = enableBlend ? THREE.CustomBlending : THREE.NoBlending;
materialParams.transparent = enableBlend;
var blendEquationSeparate = functions.blendEquationSeparate;
if ( blendEquationSeparate !== undefined ) {
materialParams.blendEquation = WEBGL_BLEND_EQUATIONS[ blendEquationSeparate[ 0 ] ];
materialParams.blendEquationAlpha = WEBGL_BLEND_EQUATIONS[ blendEquationSeparate[ 1 ] ];
} else {
materialParams.blendEquation = THREE.AddEquation;
materialParams.blendEquationAlpha = THREE.AddEquation;
}
var blendFuncSeparate = functions.blendFuncSeparate;
if ( blendFuncSeparate !== undefined ) {
materialParams.blendSrc = WEBGL_BLEND_FUNCS[ blendFuncSeparate[ 0 ] ];
materialParams.blendDst = WEBGL_BLEND_FUNCS[ blendFuncSeparate[ 1 ] ];
materialParams.blendSrcAlpha = WEBGL_BLEND_FUNCS[ blendFuncSeparate[ 2 ] ];
materialParams.blendDstAlpha = WEBGL_BLEND_FUNCS[ blendFuncSeparate[ 3 ] ];
} else {
materialParams.blendSrc = THREE.OneFactor;
materialParams.blendDst = THREE.ZeroFactor;
materialParams.blendSrcAlpha = THREE.OneFactor;
materialParams.blendDstAlpha = THREE.ZeroFactor;
}
}
}
if ( Array.isArray( materialValues.diffuse ) ) {
materialParams.color = new THREE.Color().fromArray( materialValues.diffuse );
} else if ( typeof ( materialValues.diffuse ) === 'string' ) {
materialParams.map = dependencies.textures[ materialValues.diffuse ];
}
delete materialParams.diffuse;
if ( typeof ( materialValues.reflective ) === 'string' ) {
materialParams.envMap = dependencies.textures[ materialValues.reflective ];
}
if ( typeof ( materialValues.bump ) === 'string' ) {
materialParams.bumpMap = dependencies.textures[ materialValues.bump ];
}
if ( Array.isArray( materialValues.emission ) ) {
if ( materialType === THREE.MeshBasicMaterial ) {
materialParams.color = new THREE.Color().fromArray( materialValues.emission );
} else {
materialParams.emissive = new THREE.Color().fromArray( materialValues.emission );
}
} else if ( typeof ( materialValues.emission ) === 'string' ) {
if ( materialType === THREE.MeshBasicMaterial ) {
materialParams.map = dependencies.textures[ materialValues.emission ];
} else {
materialParams.emissiveMap = dependencies.textures[ materialValues.emission ];
}
}
if ( Array.isArray( materialValues.specular ) ) {
materialParams.specular = new THREE.Color().fromArray( materialValues.specular );
} else if ( typeof ( materialValues.specular ) === 'string' ) {
materialParams.specularMap = dependencies.textures[ materialValues.specular ];
}
if ( materialValues.shininess !== undefined ) {
materialParams.shininess = materialValues.shininess;
}
var _material = new materialType( materialParams );
if ( material.name !== undefined ) _material.name = material.name;
return _material;
} );
} );
};
GLTFParser.prototype.loadMeshes = function () {
var json = this.json;
return this._withDependencies( [
"accessors",
"materials"
] ).then( function ( dependencies ) {
return _each( json.meshes, function ( mesh ) {
var group = new THREE.Group();
if ( mesh.name !== undefined ) group.name = mesh.name;
if ( mesh.extras ) group.userData = mesh.extras;
var primitives = mesh.primitives || [];
for ( var name in primitives ) {
var primitive = primitives[ name ];
if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLES || primitive.mode === undefined ) {
var geometry = new THREE.BufferGeometry();
var attributes = primitive.attributes;
for ( var attributeId in attributes ) {
var attributeEntry = attributes[ attributeId ];
if ( ! attributeEntry ) return;
var bufferAttribute = dependencies.accessors[ attributeEntry ];
switch ( attributeId ) {
case 'POSITION':
geometry.addAttribute( 'position', bufferAttribute );
break;
case 'NORMAL':
geometry.addAttribute( 'normal', bufferAttribute );
break;
case 'TEXCOORD_0':
case 'TEXCOORD0':
case 'TEXCOORD':
geometry.addAttribute( 'uv', bufferAttribute );
break;
case 'TEXCOORD_1':
geometry.addAttribute( 'uv2', bufferAttribute );
break;
case 'COLOR_0':
case 'COLOR0':
case 'COLOR':
geometry.addAttribute( 'color', bufferAttribute );
break;
case 'WEIGHT':
geometry.addAttribute( 'skinWeight', bufferAttribute );
break;
case 'JOINT':
geometry.addAttribute( 'skinIndex', bufferAttribute );
break;
default:
if ( ! primitive.material ) break;
var material = json.materials[ primitive.material ];
if ( ! material.technique ) break;
var parameters = json.techniques[ material.technique ].parameters || {};
for ( var attributeName in parameters ) {
if ( parameters[ attributeName ][ 'semantic' ] === attributeId ) {
geometry.addAttribute( attributeName, bufferAttribute );
}
}
}
}
if ( primitive.indices ) {
geometry.setIndex( dependencies.accessors[ primitive.indices ] );
}
var material = dependencies.materials !== undefined ? dependencies.materials[ primitive.material ] : createDefaultMaterial();
var meshNode = new THREE.Mesh( geometry, material );
meshNode.castShadow = true;
meshNode.name = ( name === "0" ? group.name : group.name + name );
if ( primitive.extras ) meshNode.userData = primitive.extras;
group.add( meshNode );
} else if ( primitive.mode === WEBGL_CONSTANTS.LINES ) {
var geometry = new THREE.BufferGeometry();
var attributes = primitive.attributes;
for ( var attributeId in attributes ) {
var attributeEntry = attributes[ attributeId ];
if ( ! attributeEntry ) return;
var bufferAttribute = dependencies.accessors[ attributeEntry ];
switch ( attributeId ) {
case 'POSITION':
geometry.addAttribute( 'position', bufferAttribute );
break;
case 'COLOR_0':
case 'COLOR0':
case 'COLOR':
geometry.addAttribute( 'color', bufferAttribute );
break;
}
}
var material = dependencies.materials[ primitive.material ];
var meshNode;
if ( primitive.indices ) {
geometry.setIndex( dependencies.accessors[ primitive.indices ] );
meshNode = new THREE.LineSegments( geometry, material );
} else {
meshNode = new THREE.Line( geometry, material );
}
meshNode.name = ( name === "0" ? group.name : group.name + name );
if ( primitive.extras ) meshNode.userData = primitive.extras;
group.add( meshNode );
} else {
console.warn( "Only triangular and line primitives are supported" );
}
}
return group;
} );
} );
};
GLTFParser.prototype.loadCameras = function () {
var json = this.json;
return _each( json.cameras, function ( camera ) {
if ( camera.type == "perspective" && camera.perspective ) {
var yfov = camera.perspective.yfov;
var aspectRatio = camera.perspective.aspectRatio !== undefined ? camera.perspective.aspectRatio : 1;
// According to COLLADA spec...
// aspectRatio = xfov / yfov
var xfov = yfov * aspectRatio;
var _camera = new THREE.PerspectiveCamera( THREE.Math.radToDeg( xfov ), aspectRatio, camera.perspective.znear || 1, camera.perspective.zfar || 2e6 );
if ( camera.name !== undefined ) _camera.name = camera.name;
if ( camera.extras ) _camera.userData = camera.extras;
return _camera;
} else if ( camera.type == "orthographic" && camera.orthographic ) {
var _camera = new THREE.OrthographicCamera( window.innerWidth / - 2, window.innerWidth / 2, window.innerHeight / 2, window.innerHeight / - 2, camera.orthographic.znear, camera.orthographic.zfar );
if ( camera.name !== undefined ) _camera.name = camera.name;
if ( camera.extras ) _camera.userData = camera.extras;
return _camera;
}
} );
};
GLTFParser.prototype.loadSkins = function () {
var json = this.json;
return this._withDependencies( [
"accessors"
] ).then( function ( dependencies ) {
return _each( json.skins, function ( skin ) {
var bindShapeMatrix = new THREE.Matrix4();
if ( skin.bindShapeMatrix !== undefined ) bindShapeMatrix.fromArray( skin.bindShapeMatrix );
var _skin = {
bindShapeMatrix: bindShapeMatrix,
jointNames: skin.jointNames,
inverseBindMatrices: dependencies.accessors[ skin.inverseBindMatrices ]
};
return _skin;
} );
} );
};
GLTFParser.prototype.loadAnimations = function () {
var json = this.json;
return this._withDependencies( [
"accessors",
"nodes"
] ).then( function ( dependencies ) {
return _each( json.animations, function ( animation, animationId ) {
var tracks = [];
for ( var channelId in animation.channels ) {
var channel = animation.channels[ channelId ];
var sampler = animation.samplers[ channel.sampler ];
if ( sampler ) {
var target = channel.target;
var name = target.id;
var input = animation.parameters !== undefined ? animation.parameters[ sampler.input ] : sampler.input;
var output = animation.parameters !== undefined ? animation.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 = PATH_PROPERTIES[ target.path ] === PATH_PROPERTIES.rotation
? THREE.QuaternionKeyframeTrack
: THREE.VectorKeyframeTrack;
var targetName = node.name ? node.name : node.uuid;
var interpolation = sampler.interpolation !== undefined ? INTERPOLATION[ sampler.interpolation ] : THREE.InterpolateLinear;
// 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.
tracks.push( new TypedKeyframeTrack(
targetName + '.' + PATH_PROPERTIES[ target.path ],
THREE.AnimationUtils.arraySlice( inputAccessor.array, 0 ),
THREE.AnimationUtils.arraySlice( outputAccessor.array, 0 ),
interpolation
) );
}
}
}
var name = animation.name !== undefined ? animation.name : "animation_" + animationId;
return new THREE.AnimationClip( name, undefined, tracks );
} );
} );
};
GLTFParser.prototype.loadNodes = function () {
var json = this.json;
var extensions = this.extensions;
var scope = this;
return _each( json.nodes, function ( node ) {
var matrix = new THREE.Matrix4();
var _node;
if ( node.jointName ) {
_node = new THREE.Bone();
_node.name = node.name !== undefined ? node.name : node.jointName;
_node.jointName = node.jointName;
} else {
_node = new THREE.Object3D();
if ( node.name !== undefined ) _node.name = node.name;
}
if ( node.extras ) _node.userData = node.extras;
if ( node.matrix !== undefined ) {
matrix.fromArray( node.matrix );
_node.applyMatrix( matrix );
} else {
if ( node.translation !== undefined ) {
_node.position.fromArray( node.translation );
}
if ( node.rotation !== undefined ) {
_node.quaternion.fromArray( node.rotation );
}
if ( node.scale !== undefined ) {
_node.scale.fromArray( node.scale );
}
}
return _node;
} ).then( function ( __nodes ) {
return scope._withDependencies( [
"meshes",
"skins",
"cameras"
] ).then( function ( dependencies ) {
return _each( __nodes, function ( _node, nodeId ) {
var node = json.nodes[ nodeId ];
if ( node.meshes !== undefined ) {
for ( var meshId in node.meshes ) {
var mesh = node.meshes[ meshId ];
var group = dependencies.meshes[ mesh ];
if ( group === undefined ) {
console.warn( 'LegacyGLTFLoader: Couldn\'t find node "' + mesh + '".' );
continue;
}
for ( var childrenId in group.children ) {
var child = group.children[ childrenId ];
// clone Mesh to add to _node
var originalMaterial = child.material;
var originalGeometry = child.geometry;
var originalUserData = child.userData;
var originalName = child.name;
var material;
if ( originalMaterial.isDeferredShaderMaterial ) {
originalMaterial = material = originalMaterial.create();
} else {
material = originalMaterial;
}
switch ( child.type ) {
case 'LineSegments':
child = new THREE.LineSegments( originalGeometry, material );
break;
case 'LineLoop':
child = new THREE.LineLoop( originalGeometry, material );
break;
case 'Line':
child = new THREE.Line( originalGeometry, material );
break;
default:
child = new THREE.Mesh( originalGeometry, material );
}
child.castShadow = true;
child.userData = originalUserData;
child.name = originalName;
var skinEntry;
if ( node.skin ) {
skinEntry = dependencies.skins[ node.skin ];
}
// Replace Mesh with SkinnedMesh in library
if ( skinEntry ) {
var getJointNode = function ( jointId ) {
var keys = Object.keys( __nodes );
for ( var i = 0, il = keys.length; i < il; i ++ ) {
var n = __nodes[ keys[ i ] ];
if ( n.jointName === jointId ) return n;
}
return null;
};
var geometry = originalGeometry;
var material = originalMaterial;
material.skinning = true;
child = new THREE.SkinnedMesh( geometry, material );
child.castShadow = true;
child.userData = originalUserData;
child.name = originalName;
var bones = [];
var boneInverses = [];
for ( var i = 0, l = skinEntry.jointNames.length; i < l; i ++ ) {
var jointId = skinEntry.jointNames[ i ];
var jointNode = getJointNode( jointId );
if ( jointNode ) {
bones.push( jointNode );
var m = skinEntry.inverseBindMatrices.array;
var mat = new THREE.Matrix4().fromArray( m, i * 16 );
boneInverses.push( mat );
} else {
console.warn( "WARNING: joint: '" + jointId + "' could not be found" );
}
}
child.bind( new THREE.Skeleton( bones, boneInverses ), skinEntry.bindShapeMatrix );
var buildBoneGraph = function ( parentJson, parentObject, property ) {
var children = parentJson[ property ];
if ( children === undefined ) return;
for ( var i = 0, il = children.length; i < il; i ++ ) {
var nodeId = children[ i ];
var bone = __nodes[ nodeId ];
var boneJson = json.nodes[ nodeId ];
if ( bone !== undefined && bone.isBone === true && boneJson !== undefined ) {
parentObject.add( bone );
buildBoneGraph( boneJson, bone, 'children' );
}
}
};
buildBoneGraph( node, child, 'skeletons' );
}
_node.add( child );
}
}
}
if ( node.camera !== undefined ) {
var camera = dependencies.cameras[ node.camera ];
_node.add( camera );
}
if ( node.extensions
&& node.extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ]
&& node.extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ].light ) {
var extensionLights = extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ].lights;
var light = extensionLights[ node.extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ].light ];
_node.add( light );
}
return _node;
} );
} );
} );
};
GLTFParser.prototype.loadScenes = function () {
var json = this.json;
// scene node hierachy builder
function buildNodeHierachy( nodeId, parentObject, allNodes ) {
var _node = allNodes[ nodeId ];
parentObject.add( _node );
var node = json.nodes[ nodeId ];
if ( node.children ) {
var children = node.children;
for ( var i = 0, l = children.length; i < l; i ++ ) {
var child = children[ i ];
buildNodeHierachy( child, _node, allNodes );
}
}
}
return this._withDependencies( [
"nodes"
] ).then( function ( dependencies ) {
return _each( json.scenes, function ( scene ) {
var _scene = new THREE.Scene();
if ( scene.name !== undefined ) _scene.name = scene.name;
if ( scene.extras ) _scene.userData = scene.extras;
var nodes = scene.nodes || [];
for ( var i = 0, l = nodes.length; i < l; i ++ ) {
var nodeId = nodes[ i ];
buildNodeHierachy( nodeId, _scene, dependencies.nodes );
}
_scene.traverse( function ( child ) {
// Register raw material meshes with LegacyGLTFLoader.Shaders
if ( child.material && child.material.isRawShaderMaterial ) {
child.gltfShader = new GLTFShader( child, dependencies.nodes );
child.onBeforeRender = function ( renderer, scene, camera ) {
this.gltfShader.update( scene, camera );
};
}
} );
return _scene;
} );
} );
};
return LegacyGLTFLoader;
} )();