432 lines
9.7 KiB
JavaScript
432 lines
9.7 KiB
JavaScript
/**
|
|
* @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( x, y, z );
|
|
|
|
}
|
|
|
|
function uv( u, v ) {
|
|
|
|
return new THREE.Vector2( u, v );
|
|
|
|
}
|
|
|
|
function face3( a, b, c, normals ) {
|
|
|
|
return new THREE.Face3( a, b, c, normals );
|
|
|
|
}
|
|
|
|
var object = new THREE.Object3D();
|
|
var geometry, material, mesh;
|
|
|
|
// create mesh if no objects in text
|
|
|
|
if ( /^o /gm.test( text ) === false ) {
|
|
|
|
geometry = new THREE.Geometry();
|
|
material = new THREE.MeshLambertMaterial();
|
|
mesh = new THREE.Mesh( geometry, material );
|
|
object.add( mesh );
|
|
|
|
}
|
|
|
|
var vertices = [];
|
|
var verticesCount = 0;
|
|
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( vector(
|
|
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( vector(
|
|
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( uv(
|
|
parseFloat( result[ 1 ] ),
|
|
parseFloat( result[ 2 ] )
|
|
) );
|
|
|
|
} else if ( ( result = face_pattern1.exec( line ) ) !== null ) {
|
|
|
|
// ["f 1 2 3", "1", "2", "3", undefined]
|
|
|
|
if ( result[ 4 ] === undefined ) {
|
|
|
|
geometry.vertices.push(
|
|
vertices[ parseInt( result[ 1 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 2 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 3 ] ) - 1 ]
|
|
);
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount ++,
|
|
verticesCount ++,
|
|
verticesCount ++
|
|
) );
|
|
|
|
} else {
|
|
|
|
geometry.vertices.push(
|
|
vertices[ parseInt( result[ 1 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 2 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 3 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 4 ] ) - 1 ]
|
|
);
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount,
|
|
verticesCount + 1,
|
|
verticesCount + 3
|
|
) );
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount + 1,
|
|
verticesCount + 2,
|
|
verticesCount + 3
|
|
) );
|
|
|
|
verticesCount += 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]
|
|
|
|
if ( result[ 10 ] === undefined ) {
|
|
|
|
geometry.vertices.push(
|
|
vertices[ parseInt( result[ 2 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 5 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 8 ] ) - 1 ]
|
|
);
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount ++,
|
|
verticesCount ++,
|
|
verticesCount ++
|
|
) );
|
|
|
|
geometry.faceVertexUvs[ 0 ].push( [
|
|
uvs[ parseInt( result[ 3 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 6 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 9 ] ) - 1 ]
|
|
] );
|
|
|
|
} else {
|
|
|
|
geometry.vertices.push(
|
|
vertices[ parseInt( result[ 2 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 5 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 8 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 11 ] ) - 1 ]
|
|
);
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount,
|
|
verticesCount + 1,
|
|
verticesCount + 3
|
|
) );
|
|
|
|
geometry.faceVertexUvs[ 0 ].push( [
|
|
uvs[ parseInt( result[ 3 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 6 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 12 ] ) - 1 ]
|
|
] );
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount + 1,
|
|
verticesCount + 2,
|
|
verticesCount + 3
|
|
) );
|
|
|
|
geometry.faceVertexUvs[ 0 ].push( [
|
|
uvs[ parseInt( result[ 6 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 9 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 12 ] ) - 1 ]
|
|
] );
|
|
|
|
verticesCount += 4;
|
|
|
|
}
|
|
|
|
} 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]
|
|
|
|
if ( result[ 13 ] === undefined ) {
|
|
|
|
geometry.vertices.push(
|
|
vertices[ parseInt( result[ 2 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 6 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 10 ] ) - 1 ]
|
|
);
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount ++,
|
|
verticesCount ++,
|
|
verticesCount ++,
|
|
[
|
|
normals[ parseInt( result[ 4 ] ) - 1 ],
|
|
normals[ parseInt( result[ 8 ] ) - 1 ],
|
|
normals[ parseInt( result[ 12 ] ) - 1 ]
|
|
]
|
|
) );
|
|
|
|
geometry.faceVertexUvs[ 0 ].push( [
|
|
uvs[ parseInt( result[ 3 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 7 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 11 ] ) - 1 ]
|
|
] );
|
|
|
|
} else {
|
|
|
|
geometry.vertices.push(
|
|
vertices[ parseInt( result[ 2 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 6 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 10 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 14 ] ) - 1 ]
|
|
);
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount,
|
|
verticesCount + 1,
|
|
verticesCount + 3,
|
|
[
|
|
normals[ parseInt( result[ 4 ] ) - 1 ],
|
|
normals[ parseInt( result[ 8 ] ) - 1 ],
|
|
normals[ parseInt( result[ 16 ] ) - 1 ]
|
|
]
|
|
) );
|
|
|
|
geometry.faceVertexUvs[ 0 ].push( [
|
|
uvs[ parseInt( result[ 3 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 7 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 15 ] ) - 1 ]
|
|
] );
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount + 1,
|
|
verticesCount + 2,
|
|
verticesCount + 3,
|
|
[
|
|
normals[ parseInt( result[ 8 ] ) - 1 ],
|
|
normals[ parseInt( result[ 12 ] ) - 1 ],
|
|
normals[ parseInt( result[ 16 ] ) - 1 ]
|
|
]
|
|
) );
|
|
|
|
geometry.faceVertexUvs[ 0 ].push( [
|
|
uvs[ parseInt( result[ 7 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 11 ] ) - 1 ],
|
|
uvs[ parseInt( result[ 15 ] ) - 1 ]
|
|
] );
|
|
|
|
verticesCount += 4;
|
|
|
|
}
|
|
|
|
} 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]
|
|
|
|
if ( result[ 10 ] === undefined ) {
|
|
|
|
geometry.vertices.push(
|
|
vertices[ parseInt( result[ 2 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 5 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 8 ] ) - 1 ]
|
|
);
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount ++,
|
|
verticesCount ++,
|
|
verticesCount ++,
|
|
[
|
|
normals[ parseInt( result[ 3 ] ) - 1 ],
|
|
normals[ parseInt( result[ 6 ] ) - 1 ],
|
|
normals[ parseInt( result[ 9 ] ) - 1 ]
|
|
]
|
|
) );
|
|
|
|
} else {
|
|
|
|
geometry.vertices.push(
|
|
vertices[ parseInt( result[ 2 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 5 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 8 ] ) - 1 ],
|
|
vertices[ parseInt( result[ 11 ] ) - 1 ]
|
|
);
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount,
|
|
verticesCount + 1,
|
|
verticesCount + 3,
|
|
[
|
|
normals[ parseInt( result[ 3 ] ) - 1 ],
|
|
normals[ parseInt( result[ 6 ] ) - 1 ],
|
|
normals[ parseInt( result[ 12 ] ) - 1 ]
|
|
]
|
|
) );
|
|
|
|
geometry.faces.push( face3(
|
|
verticesCount + 1,
|
|
verticesCount + 2,
|
|
verticesCount + 3,
|
|
[
|
|
normals[ parseInt( result[ 6 ] ) - 1 ],
|
|
normals[ parseInt( result[ 9 ] ) - 1 ],
|
|
normals[ parseInt( result[ 12 ] ) - 1 ]
|
|
]
|
|
) );
|
|
|
|
verticesCount += 4;
|
|
|
|
}
|
|
|
|
} else if ( /^o /.test( line ) ) {
|
|
|
|
// object
|
|
|
|
geometry = new THREE.Geometry();
|
|
material = new THREE.MeshLambertMaterial();
|
|
|
|
mesh = new THREE.Mesh( geometry, material );
|
|
mesh.name = line.substring( 2 ).trim();
|
|
object.add( mesh );
|
|
|
|
verticesCount = 0;
|
|
|
|
} 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 );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for ( var i = 0, l = object.children.length; i < l; i ++ ) {
|
|
|
|
var geometry = object.children[ i ].geometry;
|
|
|
|
geometry.computeCentroids();
|
|
geometry.computeFaceNormals();
|
|
geometry.computeBoundingSphere();
|
|
|
|
}
|
|
|
|
return object;
|
|
|
|
}
|
|
|
|
};
|