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three

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JavaScript 3D library

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import { Sphere } from '../math/Sphere.js'; import { Vector3 } from '../math/Vector3.js'; import { BufferAttribute } from '../core/BufferAttribute.js'; import { BufferGeometry } from '../core/BufferGeometry.js'; import { FileLoader } from './FileLoader.js'; import { Loader } from './Loader.js'; import { InstancedBufferGeometry } from '../core/InstancedBufferGeometry.js'; import { InstancedBufferAttribute } from '../core/InstancedBufferAttribute.js'; import { InterleavedBufferAttribute } from '../core/InterleavedBufferAttribute.js'; import { InterleavedBuffer } from '../core/InterleavedBuffer.js'; function BufferGeometryLoader( manager ) { Loader.call( this, manager ); } BufferGeometryLoader.prototype = Object.assign( Object.create( Loader.prototype ), { constructor: BufferGeometryLoader, load: function ( url, onLoad, onProgress, onError ) { const scope = this; const loader = new FileLoader( scope.manager ); loader.setPath( scope.path ); loader.setRequestHeader( scope.requestHeader ); loader.load( url, function ( text ) { try { onLoad( scope.parse( JSON.parse( text ) ) ); } catch ( e ) { if ( onError ) { onError( e ); } else { console.error( e ); } scope.manager.itemError( url ); } }, onProgress, onError ); }, parse: function ( json ) { const interleavedBufferMap = {}; const arrayBufferMap = {}; function getInterleavedBuffer( json, uuid ) { if ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ]; const interleavedBuffers = json.interleavedBuffers; const interleavedBuffer = interleavedBuffers[ uuid ]; const buffer = getArrayBuffer( json, interleavedBuffer.buffer ); const array = new TYPED_ARRAYS[ interleavedBuffer.type ]( buffer ); const ib = new InterleavedBuffer( array, interleavedBuffer.stride ); ib.uuid = interleavedBuffer.uuid; interleavedBufferMap[ uuid ] = ib; return ib; } function getArrayBuffer( json, uuid ) { if ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ]; const arrayBuffers = json.arrayBuffers; const arrayBuffer = arrayBuffers[ uuid ]; const ab = new Uint32Array( arrayBuffer ).buffer; arrayBufferMap[ uuid ] = ab; return ab; } const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry(); const index = json.data.index; if ( index !== undefined ) { const typedArray = new TYPED_ARRAYS[ index.type ]( index.array ); geometry.setIndex( new BufferAttribute( typedArray, 1 ) ); } const attributes = json.data.attributes; for ( const key in attributes ) { const attribute = attributes[ key ]; let bufferAttribute; if ( attribute.isInterleavedBufferAttribute ) { const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data ); bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized ); } else { const typedArray = new TYPED_ARRAYS[ attribute.type ]( attribute.array ); const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute; bufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized ); } if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name; geometry.setAttribute( key, bufferAttribute ); } const morphAttributes = json.data.morphAttributes; if ( morphAttributes ) { for ( const key in morphAttributes ) { const attributeArray = morphAttributes[ key ]; const array = []; for ( let i = 0, il = attributeArray.length; i < il; i ++ ) { const attribute = attributeArray[ i ]; let bufferAttribute; if ( attribute.isInterleavedBufferAttribute ) { const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data ); bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized ); } else { const typedArray = new TYPED_ARRAYS[ attribute.type ]( attribute.array ); bufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized ); } if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name; array.push( bufferAttribute ); } geometry.morphAttributes[ key ] = array; } } const morphTargetsRelative = json.data.morphTargetsRelative; if ( morphTargetsRelative ) { geometry.morphTargetsRelative = true; } const groups = json.data.groups || json.data.drawcalls || json.data.offsets; if ( groups !== undefined ) { for ( let i = 0, n = groups.length; i !== n; ++ i ) { const group = groups[ i ]; geometry.addGroup( group.start, group.count, group.materialIndex ); } } const boundingSphere = json.data.boundingSphere; if ( boundingSphere !== undefined ) { const center = new Vector3(); if ( boundingSphere.center !== undefined ) { center.fromArray( boundingSphere.center ); } geometry.boundingSphere = new Sphere( center, boundingSphere.radius ); } if ( json.name ) geometry.name = json.name; if ( json.userData ) geometry.userData = json.userData; return geometry; } } ); const TYPED_ARRAYS = { Int8Array: Int8Array, Uint8Array: Uint8Array, // Workaround for IE11 pre KB2929437. See #11440 Uint8ClampedArray: typeof Uint8ClampedArray !== 'undefined' ? Uint8ClampedArray : Uint8Array, Int16Array: Int16Array, Uint16Array: Uint16Array, Int32Array: Int32Array, Uint32Array: Uint32Array, Float32Array: Float32Array, Float64Array: Float64Array }; export { BufferGeometryLoader };