text: /*
   * Copyright (c) Joe Martella All rights reserved. Licensed under the MIT license.
   * See LICENSE in the project root for license information.
   */
  
  /**
   * @author mrdoob / http://mrdoob.com/
   */
  
  THREE.OBJLoader = function ( manager ) {
  
  	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
  
  };
  
  THREE.OBJLoader.prototype = {
  
  	constructor: THREE.OBJLoader,
  
  	load: function ( url, onLoad, onProgress, onError ) {
  
  		var scope = this;
  
  		var loader = new THREE.XHRLoader( scope.manager );
  		loader.setCrossOrigin( this.crossOrigin );
  		loader.load( url, function ( text ) {
  
  			onLoad( scope.parse( text ) );
  
  		}, onProgress, onError );
  
  	},
  
  	parse: function ( text ) {
  
  		console.time( 'OBJLoader' );
  
  		var object, objects = [];
  		var geometry, material;
  
  		function parseVertexIndex( value ) {
  
  			var index = parseInt( value );
  
  			return ( index >= 0 ? index - 1 : index + vertices.length / 3 ) * 3;
  
  		}
  
  		function parseNormalIndex( value ) {
  
  			var index = parseInt( value );
  
  			return ( index >= 0 ? index - 1 : index + normals.length / 3 ) * 3;
  
  		}
  
  		function parseUVIndex( value ) {
  
  			var index = parseInt( value );
  
  			return ( index >= 0 ? index - 1 : index + uvs.length / 2 ) * 2;
  
  		}
  
  		function addVertex( a, b, c ) {
  
  			geometry.vertices.push(
  				vertices[ a ], vertices[ a + 1 ], vertices[ a + 2 ],
  				vertices[ b ], vertices[ b + 1 ], vertices[ b + 2 ],
  				vertices[ c ], vertices[ c + 1 ], vertices[ c + 2 ]
  			);
  
  		}
  
  		function addNormal( a, b, c ) {
  
  			geometry.normals.push(
  				normals[ a ], normals[ a + 1 ], normals[ a + 2 ],
  				normals[ b ], normals[ b + 1 ], normals[ b + 2 ],
  				normals[ c ], normals[ c + 1 ], normals[ c + 2 ]
  			);
  
  		}
  
  		function addUV( a, b, c ) {
  
  			geometry.uvs.push(
  				uvs[ a ], uvs[ a + 1 ],
  				uvs[ b ], uvs[ b + 1 ],
  				uvs[ c ], uvs[ c + 1 ]
  			);
  
  		}
  
  		function addFace( a, b, c, d,  ua, ub, uc, ud, na, nb, nc, nd ) {
  
  			var ia = parseVertexIndex( a );
  			var ib = parseVertexIndex( b );
  			var ic = parseVertexIndex( c );
  			var id;
  
  			if ( d === undefined ) {
  
  				addVertex( ia, ib, ic );
  
  			} else {
  
  				id = parseVertexIndex( d );
  
  				addVertex( ia, ib, id );
  				addVertex( ib, ic, id );
  
  			}
  
  			if ( ua !== undefined ) {
  
  				ia = parseUVIndex( ua );
  				ib = parseUVIndex( ub );
  				ic = parseUVIndex( uc );
  
  				if ( d === undefined ) {
  
  					addUV( ia, ib, ic );
  
  				} else {
  
  					id = parseUVIndex( ud );
  
  					addUV( ia, ib, id );
  					addUV( ib, ic, id );
  
  				}
  
  			}
  
  			if ( na !== undefined ) {
  
  				ia = parseNormalIndex( na );
  				ib = parseNormalIndex( nb );
  				ic = parseNormalIndex( nc );
  
  				if ( d === undefined ) {
  
  					addNormal( ia, ib, ic );
  
  				} else {
  
  					id = parseNormalIndex( nd );
  
  					addNormal( ia, ib, id );
  					addNormal( ib, ic, id );
  
  				}
  
  			}
  
  		}
  
  		// create mesh if no objects in text
  
  		if ( /^o /gm.test( text ) === false ) {
  
  			geometry = {
  				vertices: [],
  				normals: [],
  				uvs: []
  			};
  
  			material = {
  				name: ''
  			};
  
  			object = {
  				name: '',
  				geometry: geometry,
  				material: material
  			};
  
  			objects.push( object );
  
  		}
  
  		var vertices = [];
  		var normals = [];
  		var uvs = [];
  
  		// v float float float
  
  		var vertex_pattern = /v( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/;
  
  		// vn float float float
  
  		var normal_pattern = /vn( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/;
  
  		// vt float float
  
  		var uv_pattern = /vt( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/;
  
  		// f vertex vertex vertex ...
  
  		var face_pattern1 = /f( +-?\d+)( +-?\d+)( +-?\d+)( +-?\d+)?/;
  
  		// f vertex/uv vertex/uv vertex/uv ...
  
  		var face_pattern2 = /f( +(-?\d+)\/(-?\d+))( +(-?\d+)\/(-?\d+))( +(-?\d+)\/(-?\d+))( +(-?\d+)\/(-?\d+))?/;
  
  		// f vertex/uv/normal vertex/uv/normal vertex/uv/normal ...
  
  		var face_pattern3 = /f( +(-?\d+)\/(-?\d+)\/(-?\d+))( +(-?\d+)\/(-?\d+)\/(-?\d+))( +(-?\d+)\/(-?\d+)\/(-?\d+))( +(-?\d+)\/(-?\d+)\/(-?\d+))?/;
  
  		// f vertex//normal vertex//normal vertex//normal ...
  
  		var face_pattern4 = /f( +(-?\d+)\/\/(-?\d+))( +(-?\d+)\/\/(-?\d+))( +(-?\d+)\/\/(-?\d+))( +(-?\d+)\/\/(-?\d+))?/
  
  		//
  
  		var lines = text.split( '\n' );
  
  		for ( var i = 0; i < lines.length; i ++ ) {
  
  			var line = lines[ i ];
  			line = line.trim();
  
  			var result;
  
  			if ( line.length === 0 || line.charAt( 0 ) === '#' ) {
  
  				continue;
  
  			} else if ( ( result = vertex_pattern.exec( line ) ) !== null ) {
  
  				// ["v 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
  
  				vertices.push(
  					parseFloat( result[ 1 ] ),
  					parseFloat( result[ 2 ] ),
  					parseFloat( result[ 3 ] )
  				);
  
  			} else if ( ( result = normal_pattern.exec( line ) ) !== null ) {
  
  				// ["vn 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
  
  				normals.push(
  					parseFloat( result[ 1 ] ),
  					parseFloat( result[ 2 ] ),
  					parseFloat( result[ 3 ] )
  				);
  
  			} else if ( ( result = uv_pattern.exec( line ) ) !== null ) {
  
  				// ["vt 0.1 0.2", "0.1", "0.2"]
  
  				uvs.push(
  					parseFloat( result[ 1 ] ),
  					parseFloat( result[ 2 ] )
  				);
  
  			} else if ( ( result = face_pattern1.exec( line ) ) !== null ) {
  
  				// ["f 1 2 3", "1", "2", "3", undefined]
  
  				addFace(
  					result[ 1 ], result[ 2 ], result[ 3 ], result[ 4 ]
  				);
  
  			} else if ( ( result = face_pattern2.exec( line ) ) !== null ) {
  
  				// ["f 1/1 2/2 3/3", " 1/1", "1", "1", " 2/2", "2", "2", " 3/3", "3", "3", undefined, undefined, undefined]
  
  				addFace(
  					result[ 2 ], result[ 5 ], result[ 8 ], result[ 11 ],
  					result[ 3 ], result[ 6 ], result[ 9 ], result[ 12 ]
  				);
  
  			} else if ( ( result = face_pattern3.exec( line ) ) !== null ) {
  
  				// ["f 1/1/1 2/2/2 3/3/3", " 1/1/1", "1", "1", "1", " 2/2/2", "2", "2", "2", " 3/3/3", "3", "3", "3", undefined, undefined, undefined, undefined]
  
  				addFace(
  					result[ 2 ], result[ 6 ], result[ 10 ], result[ 14 ],
  					result[ 3 ], result[ 7 ], result[ 11 ], result[ 15 ],
  					result[ 4 ], result[ 8 ], result[ 12 ], result[ 16 ]
  				);
  
  			} else if ( ( result = face_pattern4.exec( line ) ) !== null ) {
  
  				// ["f 1//1 2//2 3//3", " 1//1", "1", "1", " 2//2", "2", "2", " 3//3", "3", "3", undefined, undefined, undefined]
  
  				addFace(
  					result[ 2 ], result[ 5 ], result[ 8 ], result[ 11 ],
  					undefined, undefined, undefined, undefined,
  					result[ 3 ], result[ 6 ], result[ 9 ], result[ 12 ]
  				);
  
  			} else if ( /^o /.test( line ) ) {
  
  				geometry = {
  					vertices: [],
  					normals: [],
  					uvs: []
  				};
  
  				material = {
  					name: ''
  				};
  
  				object = {
  					name: line.substring( 2 ).trim(),
  					geometry: geometry,
  					material: material
  				};
  
  				objects.push( object )
  
  			} else if ( /^g /.test( line ) ) {
  
  				// group
  
  			} else if ( /^usemtl /.test( line ) ) {
  
  				// material
  
  				material.name = line.substring( 7 ).trim();
  
  			} else if ( /^mtllib /.test( line ) ) {
  
  				// mtl file
  
  			} else if ( /^s /.test( line ) ) {
  
  				// smooth shading
  
  			} else {
  
  				// console.log( "THREE.OBJLoader: Unhandled line " + line );
  
  			}
  
  		}
  
  		var container = new THREE.Object3D();
  
  		for ( var i = 0, l = objects.length; i < l; i ++ ) {
  
  			object = objects[ i ];
  			geometry = object.geometry;
  
  			var buffergeometry = new THREE.BufferGeometry();
  
  			buffergeometry.addAttribute( 'position', new THREE.BufferAttribute( new Float32Array( geometry.vertices ), 3 ) );
  
  			if ( geometry.normals.length > 0 ) {
  				buffergeometry.addAttribute( 'normal', new THREE.BufferAttribute( new Float32Array( geometry.normals ), 3 ) );
  			}
  
  			if ( geometry.uvs.length > 0 ) {
  				buffergeometry.addAttribute( 'uv', new THREE.BufferAttribute( new Float32Array( geometry.uvs ), 2 ) );
  			}
  
  			material = new THREE.MeshLambertMaterial();
  			material.name = object.material.name;
  
  			var mesh = new THREE.Mesh( buffergeometry, material );
  			mesh.name = object.name;
  
  			container.add( mesh );
  
  		}
  
  		console.timeEnd( 'OBJLoader' );
  
  		return container;
  
  	}
  
  };
  