Added Geometry2 based OBJLoader.

examples/js/loaders/OBJLoader2.js

@@ -0,0 +1,337 @@
+/**
+ * @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 ) );
+
+		} );
+
+	},
+
+	parse: function ( text ) {
+
+		/*
+		function vector( x, y, z ) {
+
+			return new THREE.Vector3( parseFloat( x ), parseFloat( y ), parseFloat( z ) );
+
+		}
+
+		function uv( u, v ) {
+
+			return new THREE.Vector2( parseFloat( u ), parseFloat( v ) );
+
+		}
+
+		function face3( a, b, c, normals ) {
+
+			return new THREE.Face3( a, b, c, normals );
+
+		}
+		*/
+		
+		var object = new THREE.Object3D();
+		var geometry, material, mesh;
+
+		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 handleFace( a, b, c, d ) {
+
+			var ia = parseVertexIndex( a );
+			var ib = parseVertexIndex( b );
+			var ic = parseVertexIndex( c );
+
+			if ( d === undefined ) {
+
+				addVertex( ia, ib, ic );
+
+			} else {
+
+				var id = parseVertexIndex( d );
+
+				addVertex( ia, ib, id );
+				addVertex( ib, ic, id );
+
+			}
+
+		}
+
+		function handleUV( a, b, c, d ) {
+
+			var ia = parseUVIndex( a );
+			var ib = parseUVIndex( b );
+      		var ic = parseUVIndex( c );
+
+      		if ( d === undefined ) {
+
+				addUV( ia, ib, ic );
+
+			} else {
+
+				var id = parseUVIndex( d );
+
+				addUV( ia, ib, id );
+				addUV( ib, ic, id );
+
+			}
+
+		}
+
+		function handleNormal( a, b, c, d ) {
+
+			var ia = parseNormalIndex( a );
+			var ib = parseNormalIndex( b );
+			var ic = parseNormalIndex( c );
+
+			if ( d === undefined ) {
+
+				addNormal( ia, ib, ic );
+
+			} else {
+
+				var id = parseNormalIndex( d );
+
+				addNormal( ia, ib, id );
+				addNormal( ib, ic, id );
+
+			}
+
+		}
+
+		// create mesh if no objects in text
+
+		if ( /^o /gm.test( text ) === false ) {
+
+			geometry = new THREE.Geometry2();
+			material = new THREE.MeshLambertMaterial();
+			mesh = new THREE.Mesh( geometry, material );
+			object.add( mesh );
+
+		}
+
+		var vertices = [];
+		var normals = [];
+		var uvs = [];
+
+		// v float float float
+
+		var vertex_pattern = /v( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)/;
+
+		// vn float float float
+
+		var normal_pattern = /vn( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)/;
+
+		// vt float float
+
+		var uv_pattern = /vt( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|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]
+
+				handleFace( 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]
+				
+				handleFace( result[ 2 ], result[ 5 ], result[ 8 ], result[ 11 ] );
+				handleUV( 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]
+
+				handleFace( result[ 2 ], result[ 6 ], result[ 10 ], result[ 14 ] );
+				handleUV( result[ 3 ], result[ 7 ], result[ 11 ], result[ 15 ] );
+				handleNormal( 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]
+
+				handleFace( result[ 2 ], result[ 5 ], result[ 8 ], result[ 11 ] );
+				handleNormal( result[ 3 ], result[ 6 ], result[ 9 ], result[ 12 ] );
+
+			} else if ( /^o /.test( line ) ) {
+
+				geometry = new THREE.Geometry2();
+				material = new THREE.MeshLambertMaterial();
+
+				mesh = new THREE.Mesh( geometry, material );
+				mesh.name = line.substring( 2 ).trim();
+				object.add( mesh );
+
+			} 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 children = object.children;
+
+		for ( var i = 0, l = children.length; i < l; i ++ ) {
+
+			var geometry = children[ i ].geometry;
+
+			geometry.vertices = new Float32Array( geometry.vertices );
+			geometry.normals = new Float32Array( geometry.normals );
+			geometry.uvs = new Float32Array( geometry.uvs );
+
+		}
+
+		return object;
+
+	}
+
+};