提交 08e9c5b1 编写于 作者: A alteredq

Added CTMLoader and example.

OpenCTM mesh format looks quite promising, smaller than UTF8 and more robust, just geometry creation time is slower (decompression is done in JavaScript as opposed to piggybacking on built-in http gzip).
上级 757c4e62
文件已添加
/**
* Loader for CTM encoded models generated by OpenCTM tools:
* http://openctm.sourceforge.net/
*
* Uses js-openctm library by Juan Mellado
* http://code.google.com/p/js-openctm/
*
* @author alteredq / http://alteredqualia.com/
*/
THREE.CTMLoader = function ( ) {
};
THREE.CTMLoader.prototype = new THREE.CTMLoader();
THREE.CTMLoader.prototype.constructor = THREE.CTMLoader;
// Load CTMLoader compressed models
// - parameters
// - url (required)
// - callback (required)
THREE.CTMLoader.prototype.load = function( url, callback ) {
var xhr = new XMLHttpRequest(),
callbackProgress = null;
var length = 0;
xhr.onreadystatechange = function() {
if ( xhr.readyState == 4 ) {
if ( xhr.status == 200 || xhr.status == 0 ) {
THREE.CTMLoader.prototype.createModel( xhr.responseText, callback );
} else {
alert( "Couldn't load [" + url + "] [" + xhr.status + "]" );
}
} else if ( xhr.readyState == 3 ) {
if ( callbackProgress ) {
if ( length == 0 ) {
length = xhr.getResponseHeader( "Content-Length" );
}
callbackProgress( { total: length, loaded: xhr.responseText.length } );
}
} else if ( xhr.readyState == 2 ) {
length = xhr.getResponseHeader( "Content-Length" );
}
}
xhr.overrideMimeType( "text/plain; charset=x-user-defined" );
xhr.open( "GET", url, true );
xhr.send( null );
};
THREE.CTMLoader.prototype.createModel = function ( data, callback ) {
var Model = function ( texture_path ) {
var s = (new Date).getTime();
var scope = this;
scope.materials = [];
THREE.Geometry.call( this );
var file = new CTM.File( new CTM.Stream( data ) );
console.log( file );
var normals = [],
uvs = [],
colors = [];
init_vertices( file.body.vertices );
if ( file.body.normals !== undefined )
init_normals( file.body.normals );
if ( file.body.uvMaps !== undefined && file.body.uvMaps.length > 0 )
init_uvs( file.body.uvMaps[ 0 ].uv );
if ( file.body.attrMaps !== undefined && file.body.attrMaps.length > 0 && file.body.attrMaps[ 0 ].name === "Color" )
init_colors( file.body.attrMaps[ 0 ].attr );
var hasNormals = normals.length > 0 ? true : false,
hasUvs = uvs.length > 0 ? true : false,
hasColors = colors.length > 0 ? true : false;
init_faces( file.body.indices );
this.computeCentroids();
this.computeFaceNormals();
//this.computeTangents();
var e = (new Date).getTime();
console.log( "CTM data parse time: " + (e-s) + " ms" );
function init_vertices( buffer ) {
var x, y, z, i, il = buffer.length;
for( i = 0; i < il; i += 3 ) {
x = buffer[ i ];
y = buffer[ i + 1 ];
z = buffer[ i + 2 ];
vertex( scope, x, y, z );
}
};
function init_normals( buffer ) {
var x, y, z, i, il = buffer.length;
for( i = 0; i < il; i += 3 ) {
x = buffer[ i ];
y = buffer[ i + 1 ];
z = buffer[ i + 2 ];
normals.push( x, y, z );
}
};
function init_colors( buffer ) {
var r, g, b, a, i, il = buffer.length;
for( i = 0; i < il; i += 4 ) {
r = buffer[ i ];
g = buffer[ i + 1 ];
b = buffer[ i + 2 ];
a = buffer[ i + 3 ];
var color = new THREE.Color();
color.setRGB( r, g, b );
colors.push( color );
}
};
function init_uvs( buffer ) {
var u, v, i, il = buffer.length;
for( i = 0; i < il; i += 2 ) {
u = buffer[ i ];
v = buffer[ i + 1 ];
uvs.push( u, 1 - v );
}
};
function init_faces( buffer ) {
var a, b, c,
u1, v1, u2, v2, u3, v3,
m, face,
i, il = buffer.length;
m = 0; // all faces defaulting to material 0
for( i = 0; i < il; i += 3 ) {
a = buffer[ i ];
b = buffer[ i + 1 ];
c = buffer[ i + 2 ];
if ( hasNormals )
face = f3n( scope, normals, a, b, c, m, a, b, c );
else
face = f3( scope, a, b, c, m );
if ( hasColors ) {
face.vertexColors[ 0 ] = colors[ a ];
face.vertexColors[ 1 ] = colors[ b ];
face.vertexColors[ 2 ] = colors[ c ];
}
if ( hasUvs ) {
u1 = uvs[ a * 2 ];
v1 = uvs[ a * 2 + 1 ];
u2 = uvs[ b * 2 ];
v2 = uvs[ b * 2 + 1 ];
u3 = uvs[ c * 2 ];
v3 = uvs[ c * 2 + 1 ];
uv3( scope.faceVertexUvs[ 0 ], u1, v1, u2, v2, u3, v3 );
}
}
}
};
function vertex ( scope, x, y, z ) {
scope.vertices.push( new THREE.Vertex( new THREE.Vector3( x, y, z ) ) );
};
function f3 ( scope, a, b, c, mi ) {
var face = new THREE.Face3( a, b, c, null, null, mi );
scope.faces.push( face );
return face;
};
function f3n ( scope, normals, a, b, c, mi, na, nb, nc ) {
var nax = normals[ na * 3 ],
nay = normals[ na * 3 + 1 ],
naz = normals[ na * 3 + 2 ],
nbx = normals[ nb * 3 ],
nby = normals[ nb * 3 + 1 ],
nbz = normals[ nb * 3 + 2 ],
ncx = normals[ nc * 3 ],
ncy = normals[ nc * 3 + 1 ],
ncz = normals[ nc * 3 + 2 ];
var na = new THREE.Vector3( nax, nay, naz ),
nb = new THREE.Vector3( nbx, nby, nbz ),
nc = new THREE.Vector3( ncx, ncy, ncz );
var face = new THREE.Face3( a, b, c, [ na, nb, nc ], null, mi );
scope.faces.push( face );
return face;
};
function uv3 ( where, u1, v1, u2, v2, u3, v3 ) {
var uv = [];
uv.push( new THREE.UV( u1, v1 ) );
uv.push( new THREE.UV( u2, v2 ) );
uv.push( new THREE.UV( u3, v3 ) );
where.push( uv );
};
Model.prototype = new THREE.Geometry();
Model.prototype.constructor = Model;
callback( new Model() );
};
var CTM = CTM || {};
CTM.CompressionMethod = {
RAW: 0x00574152,
MG1: 0x0031474d,
MG2: 0x0032474d
};
CTM.Flags = {
NORMALS: 0x00000001
};
CTM.File = function(stream){
this.load(stream);
};
CTM.File.prototype.load = function(stream){
this.header = new CTM.FileHeader(stream);
this.body = new CTM.FileBody(this.header);
this.getReader().read(stream, this.body);
};
CTM.File.prototype.getReader = function(){
var reader;
switch(this.header.compressionMethod){
case CTM.CompressionMethod.RAW:
reader = new CTM.ReaderRAW();
break;
case CTM.CompressionMethod.MG1:
reader = new CTM.ReaderMG1();
break;
case CTM.CompressionMethod.MG2:
reader = new CTM.ReaderMG2();
break;
}
return reader;
};
CTM.FileHeader = function(stream){
stream.readInt32(); //magic "OCTM"
this.fileFormat = stream.readInt32();
this.compressionMethod = stream.readInt32();
this.vertexCount = stream.readInt32();
this.triangleCount = stream.readInt32();
this.uvMapCount = stream.readInt32();
this.attrMapCount = stream.readInt32();
this.flags = stream.readInt32();
this.comment = stream.readString();
};
CTM.FileHeader.prototype.hasNormals = function(){
return this.flags & CTM.Flags.NORMALS;
};
CTM.FileBody = function(header){
var i = header.triangleCount * 3,
v = header.vertexCount * 3,
n = header.hasNormals()? header.vertexCount * 3: 0,
u = header.vertexCount * 2,
a = header.vertexCount * 4,
j = 0;
var data = new ArrayBuffer(
(i + v + n + (u * header.uvMapCount) + (a * header.attrMapCount) ) * 4);
this.indices = new Uint32Array(data, 0, i);
this.vertices = new Float32Array(data, i * 4, v);
if ( header.hasNormals() ){
this.normals = new Float32Array(data, (i + v) * 4, n);
}
if (header.uvMapCount){
this.uvMaps = [];
for (j = 0; j < header.uvMapCount; ++ j){
this.uvMaps[j] = {uv: new Float32Array(data,
(i + v + n + (j * u) ) * 4, u) };
}
}
if (header.attrMapCount){
this.attrMaps = [];
for (j = 0; j < header.attrMapCount; ++ j){
this.attrMaps[j] = {attr: new Float32Array(data,
(i + v + n + (u * header.uvMapCount) + (j * a) ) * 4, a) };
}
}
};
CTM.FileMG2Header = function(stream){
stream.readInt32(); //magic "MG2H"
this.vertexPrecision = stream.readFloat32();
this.normalPrecision = stream.readFloat32();
this.lowerBoundx = stream.readFloat32();
this.lowerBoundy = stream.readFloat32();
this.lowerBoundz = stream.readFloat32();
this.higherBoundx = stream.readFloat32();
this.higherBoundy = stream.readFloat32();
this.higherBoundz = stream.readFloat32();
this.divx = stream.readInt32();
this.divy = stream.readInt32();
this.divz = stream.readInt32();
this.sizex = (this.higherBoundx - this.lowerBoundx) / this.divx;
this.sizey = (this.higherBoundy - this.lowerBoundy) / this.divy;
this.sizez = (this.higherBoundz - this.lowerBoundz) / this.divz;
};
CTM.ReaderRAW = function(){
};
CTM.ReaderRAW.prototype.read = function(stream, body){
this.readIndices(stream, body.indices);
this.readVertices(stream, body.vertices);
if (body.normals){
this.readNormals(stream, body.normals);
}
if (body.uvMaps){
this.readUVMaps(stream, body.uvMaps);
}
if (body.attrMaps){
this.readAttrMaps(stream, body.attrMaps);
}
};
CTM.ReaderRAW.prototype.readIndices = function(stream, indices){
stream.readInt32(); //magic "INDX"
stream.readArrayInt32(indices);
};
CTM.ReaderRAW.prototype.readVertices = function(stream, vertices){
stream.readInt32(); //magic "VERT"
stream.readArrayFloat32(vertices);
};
CTM.ReaderRAW.prototype.readNormals = function(stream, normals){
stream.readInt32(); //magic "NORM"
stream.readArrayFloat32(normals);
};
CTM.ReaderRAW.prototype.readUVMaps = function(stream, uvMaps){
var i = 0;
for (; i < uvMaps.length; ++ i){
stream.readInt32(); //magic "TEXC"
uvMaps[i].name = stream.readString();
uvMaps[i].filename = stream.readString();
stream.readArrayFloat32(uvMaps[i].uv);
}
};
CTM.ReaderRAW.prototype.readAttrMaps = function(stream, attrMaps){
var i = 0;
for (; i < attrMaps.length; ++ i){
stream.readInt32(); //magic "ATTR"
attrMaps[i].name = stream.readString();
stream.readArrayFloat32(attrMaps[i].attr);
}
};
CTM.ReaderMG1 = function(){
};
CTM.ReaderMG1.prototype.read = function(stream, body){
this.readIndices(stream, body.indices);
this.readVertices(stream, body.vertices);
if (body.normals){
this.readNormals(stream, body.normals);
}
if (body.uvMaps){
this.readUVMaps(stream, body.uvMaps);
}
if (body.attrMaps){
this.readAttrMaps(stream, body.attrMaps);
}
};
CTM.ReaderMG1.prototype.readIndices = function(stream, indices){
stream.readInt32(); //magic "INDX"
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(indices, 3);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
CTM.restoreIndices(indices, indices.length);
};
CTM.ReaderMG1.prototype.readVertices = function(stream, vertices){
stream.readInt32(); //magic "VERT"
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(vertices, 1);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
};
CTM.ReaderMG1.prototype.readNormals = function(stream, normals){
stream.readInt32(); //magic "NORM"
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(normals, 3);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
};
CTM.ReaderMG1.prototype.readUVMaps = function(stream, uvMaps){
var i = 0;
for (; i < uvMaps.length; ++ i){
stream.readInt32(); //magic "TEXC"
uvMaps[i].name = stream.readString();
uvMaps[i].filename = stream.readString();
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(uvMaps[i].uv, 2);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
}
};
CTM.ReaderMG1.prototype.readAttrMaps = function(stream, attrMaps){
var i = 0;
for (; i < attrMaps.length; ++ i){
stream.readInt32(); //magic "ATTR"
attrMaps[i].name = stream.readString();
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(attrMaps[i].attr, 4);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
}
};
CTM.ReaderMG2 = function(){
};
CTM.ReaderMG2.prototype.read = function(stream, body){
this.MG2Header = new CTM.FileMG2Header(stream);
this.readVertices(stream, body.vertices);
this.readIndices(stream, body.indices);
if (body.normals){
this.readNormals(stream, body);
}
if (body.uvMaps){
this.readUVMaps(stream, body.uvMaps);
}
if (body.attrMaps){
this.readAttrMaps(stream, body.attrMaps);
}
};
CTM.ReaderMG2.prototype.readVertices = function(stream, vertices){
stream.readInt32(); //magic "VERT"
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(vertices, 3);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
var gridIndices = this.readGridIndices(stream, vertices);
CTM.restoreVertices(vertices, this.MG2Header, gridIndices, this.MG2Header.vertexPrecision);
};
CTM.ReaderMG2.prototype.readGridIndices = function(stream, vertices){
stream.readInt32(); //magic "GIDX"
stream.readInt32(); //packed size
var gridIndices = new Uint32Array(vertices.length / 3);
var interleaved = new CTM.InterleavedStream(gridIndices, 1);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
CTM.restoreGridIndices(gridIndices, gridIndices.length);
return gridIndices;
};
CTM.ReaderMG2.prototype.readIndices = function(stream, indices){
stream.readInt32(); //magic "INDX"
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(indices, 3);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
CTM.restoreIndices(indices, indices.length);
};
CTM.ReaderMG2.prototype.readNormals = function(stream, body){
stream.readInt32(); //magic "NORM"
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(body.normals, 3);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
var smooth = CTM.calcSmoothNormals(body.indices, body.vertices);
CTM.restoreNormals(body.normals, smooth, this.MG2Header.normalPrecision);
};
CTM.ReaderMG2.prototype.readUVMaps = function(stream, uvMaps){
var i = 0;
for (; i < uvMaps.length; ++ i){
stream.readInt32(); //magic "TEXC"
uvMaps[i].name = stream.readString();
uvMaps[i].filename = stream.readString();
var precision = stream.readFloat32();
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(uvMaps[i].uv, 2);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
CTM.restoreMap(uvMaps[i].uv, 2, precision);
}
};
CTM.ReaderMG2.prototype.readAttrMaps = function(stream, attrMaps){
var i = 0;
for (; i < attrMaps.length; ++ i){
stream.readInt32(); //magic "ATTR"
attrMaps[i].name = stream.readString();
var precision = stream.readFloat32();
stream.readInt32(); //packed size
var interleaved = new CTM.InterleavedStream(attrMaps[i].attr, 4);
LZMA.decompress(stream, stream, interleaved, interleaved.data.length);
CTM.restoreMap(attrMaps[i].attr, 4, precision);
}
};
CTM.restoreIndices = function(indices, len){
var i = 3;
if (len > 0){
indices[2] += indices[0];
}
for (; i < len; i += 3){
indices[i] += indices[i - 3];
if (indices[i] === indices[i - 3]){
indices[i + 1] += indices[i - 2];
}else{
indices[i + 1] += indices[i];
}
indices[i + 2] += indices[i];
}
};
CTM.restoreGridIndices = function(gridIndices, len){
var i = 1;
for (; i < len; ++ i){
gridIndices[i] += gridIndices[i - 1];
}
};
CTM.restoreVertices = function(vertices, grid, gridIndices, precision){
var gridIdx, delta, x, y, z,
intVertices = new Uint32Array(vertices.buffer, vertices.byteOffset, vertices.length),
ydiv = grid.divx, zdiv = ydiv * grid.divy,
prevGridIdx = 0x7fffffff, prevDelta = 0,
i = 0, j = 0, len = gridIndices.length;
for (; i < len; j += 3){
x = gridIdx = gridIndices[i ++];
z = ~~(x / zdiv);
x -= ~~(z * zdiv);
y = ~~(x / ydiv);
x -= ~~(y * ydiv);
delta = intVertices[j];
if (gridIdx === prevGridIdx){
delta += prevDelta;
}
vertices[j] = grid.lowerBoundx +
x * grid.sizex + precision * delta;
vertices[j + 1] = grid.lowerBoundy +
y * grid.sizey + precision * intVertices[j + 1];
vertices[j + 2] = grid.lowerBoundz +
z * grid.sizez + precision * intVertices[j + 2];
prevGridIdx = gridIdx;
prevDelta = delta;
}
};
CTM.restoreNormals = function(normals, smooth, precision){
var ro, phi, theta, sinPhi,
nx, ny, nz, by, bz, len,
intNormals = new Uint32Array(normals.buffer, normals.byteOffset, normals.length),
i = 0, k = normals.length,
PI_DIV_2 = 3.141592653589793238462643 * 0.5;
for (; i < k; i += 3){
ro = intNormals[i] * precision;
phi = intNormals[i + 1];
if (phi === 0){
normals[i] = smooth[i] * ro;
normals[i + 1] = smooth[i + 1] * ro;
normals[i + 2] = smooth[i + 2] * ro;
}else{
if (phi <= 4){
theta = (intNormals[i + 2] - 2) * PI_DIV_2;
}else{
theta = ( (intNormals[i + 2] * 4 / phi) - 2) * PI_DIV_2;
}
phi *= precision * PI_DIV_2;
sinPhi = ro * Math.sin(phi);
nx = sinPhi * Math.cos(theta);
ny = sinPhi * Math.sin(theta);
nz = ro * Math.cos(phi);
bz = smooth[i + 1];
by = smooth[i] - smooth[i + 2];
len = Math.sqrt(2 * bz * bz + by * by);
if (len > 1e-20){
by /= len;
bz /= len;
}
normals[i] = smooth[i] * nz +
(smooth[i + 1] * bz - smooth[i + 2] * by) * ny - bz * nx;
normals[i + 1] = smooth[i + 1] * nz -
(smooth[i + 2] + smooth[i] ) * bz * ny + by * nx;
normals[i + 2] = smooth[i + 2] * nz +
(smooth[i] * by + smooth[i + 1] * bz) * ny + bz * nx;
}
}
};
CTM.restoreMap = function(map, count, precision){
var delta, value,
intMap = new Uint32Array(map.buffer, map.byteOffset, map.length),
i = 0, j, len = map.length;
for (; i < count; ++ i){
delta = 0;
for (j = i; j < len; j += count){
value = intMap[j];
delta += value & 1? -( (value + 1) >> 1): value >> 1;
map[j] = delta * precision;
}
}
};
CTM.calcSmoothNormals = function(indices, vertices){
var smooth = new Float32Array(vertices.length),
indx, indy, indz, nx, ny, nz,
v1x, v1y, v1z, v2x, v2y, v2z, len,
i, k;
for (i = 0, k = indices.length; i < k;){
indx = indices[i ++] * 3;
indy = indices[i ++] * 3;
indz = indices[i ++] * 3;
v1x = vertices[indy] - vertices[indx];
v2x = vertices[indz] - vertices[indx];
v1y = vertices[indy + 1] - vertices[indx + 1];
v2y = vertices[indz + 1] - vertices[indx + 1];
v1z = vertices[indy + 2] - vertices[indx + 2];
v2z = vertices[indz + 2] - vertices[indx + 2];
nx = v1y * v2z - v1z * v2y;
ny = v1z * v2x - v1x * v2z;
nz = v1x * v2y - v1y * v2x;
len = Math.sqrt(nx * nx + ny * ny + nz * nz);
if (len > 1e-10){
nx /= len;
ny /= len;
nz /= len;
}
smooth[indx] += nx;
smooth[indx + 1] += ny;
smooth[indx + 2] += nz;
smooth[indy] += nx;
smooth[indy + 1] += ny;
smooth[indy + 2] += nz;
smooth[indz] += nx;
smooth[indz + 1] += ny;
smooth[indz + 2] += nz;
}
for (i = 0, k = smooth.length; i < k; i += 3){
len = Math.sqrt(smooth[i] * smooth[i] +
smooth[i + 1] * smooth[i + 1] +
smooth[i + 2] * smooth[i + 2]);
if(len > 1e-10){
smooth[i] /= len;
smooth[i + 1] /= len;
smooth[i + 2] /= len;
}
}
return smooth;
};
CTM.isLittleEndian = (function(){
var buffer = new ArrayBuffer(2),
bytes = new Uint8Array(buffer),
ints = new Uint16Array(buffer);
bytes[0] = 1;
return ints[0] === 1;
}());
CTM.InterleavedStream = function(data, count){
this.data = new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
this.offset = CTM.isLittleEndian? 3: 0;
this.count = count * 4;
this.len = this.data.length;
};
CTM.InterleavedStream.prototype.writeByte = function(value){
this.data[this.offset] = value;
this.offset += this.count;
if (this.offset >= this.len){
this.offset -= this.len - 4;
if (this.offset >= this.count){
this.offset -= this.count + (CTM.isLittleEndian? 1: -1);
}
}
};
CTM.Stream = function(data){
this.data = data;
this.offset = 0;
};
CTM.Stream.prototype.TWO_POW_MINUS23 = Math.pow(2, -23);
CTM.Stream.prototype.TWO_POW_MINUS126 = Math.pow(2, -126);
CTM.Stream.prototype.readByte = function(){
return this.data.charCodeAt(this.offset ++) & 0xff;
};
CTM.Stream.prototype.readInt32 = function(){
var i = this.readByte();
i |= this.readByte() << 8;
i |= this.readByte() << 16;
return i | (this.readByte() << 24);
};
CTM.Stream.prototype.readFloat32 = function(){
var m = this.readByte();
m += this.readByte() << 8;
var b1 = this.readByte();
var b2 = this.readByte();
m += (b1 & 0x7f) << 16;
var e = ( (b2 & 0x7f) << 1) | ( (b1 & 0x80) >>> 7);
var s = b2 & 0x80? -1: 1;
if (e === 255){
return m !== 0? NaN: s * Infinity;
}
if (e > 0){
return s * (1 + (m * this.TWO_POW_MINUS23) ) * Math.pow(2, e - 127);
}
if (m !== 0){
return s * m * this.TWO_POW_MINUS126;
}
return s * 0;
};
CTM.Stream.prototype.readString = function(){
var len = this.readInt32();
this.offset += len;
return this.data.substr(this.offset - len, len);
};
CTM.Stream.prototype.readArrayInt32 = function(array){
var i = 0, len = array.length;
while(i < len){
array[i ++] = this.readInt32();
}
return array;
};
CTM.Stream.prototype.readArrayFloat32 = function(array){
var i = 0, len = array.length;
while(i < len){
array[i ++] = this.readFloat32();
}
return array;
};
Copyright (c) 2009-2010 Marcus Geelnard
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not
be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
Copyright (c) 2011 Juan Mellado
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
Copyright (c) 2011 Juan Mellado
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
var LZMA = LZMA || {};
LZMA.OutWindow = function(){
this._windowSize = 0;
};
LZMA.OutWindow.prototype.create = function(windowSize){
if ( (!this._buffer) || (this._windowSize !== windowSize) ){
this._buffer = [];
}
this._windowSize = windowSize;
this._pos = 0;
this._streamPos = 0;
};
LZMA.OutWindow.prototype.flush = function(){
var size = this._pos - this._streamPos;
if (size !== 0){
while(size --){
this._stream.writeByte(this._buffer[this._streamPos ++]);
}
if (this._pos >= this._windowSize){
this._pos = 0;
}
this._streamPos = this._pos;
}
};
LZMA.OutWindow.prototype.releaseStream = function(){
this.flush();
this._stream = null;
};
LZMA.OutWindow.prototype.setStream = function(stream){
this.releaseStream();
this._stream = stream;
};
LZMA.OutWindow.prototype.init = function(solid){
if (!solid){
this._streamPos = 0;
this._pos = 0;
}
};
LZMA.OutWindow.prototype.copyBlock = function(distance, len){
var pos = this._pos - distance - 1;
if (pos < 0){
pos += this._windowSize;
}
while(len --){
if (pos >= this._windowSize){
pos = 0;
}
this._buffer[this._pos ++] = this._buffer[pos ++];
if (this._pos >= this._windowSize){
this.flush();
}
}
};
LZMA.OutWindow.prototype.putByte = function(b){
this._buffer[this._pos ++] = b;
if (this._pos >= this._windowSize){
this.flush();
}
};
LZMA.OutWindow.prototype.getByte = function(distance){
var pos = this._pos - distance - 1;
if (pos < 0){
pos += this._windowSize;
}
return this._buffer[pos];
};
LZMA.RangeDecoder = function(){
};
LZMA.RangeDecoder.prototype.setStream = function(stream){
this._stream = stream;
};
LZMA.RangeDecoder.prototype.releaseStream = function(){
this._stream = null;
};
LZMA.RangeDecoder.prototype.init = function(){
var i = 5;
this._code = 0;
this._range = -1;
while(i --){
this._code = (this._code << 8) | this._stream.readByte();
}
};
LZMA.RangeDecoder.prototype.decodeDirectBits = function(numTotalBits){
var result = 0, i = numTotalBits, t;
while(i --){
this._range >>>= 1;
t = (this._code - this._range) >>> 31;
this._code -= this._range & (t - 1);
result = (result << 1) | (1 - t);
if ( (this._range & 0xff000000) === 0){
this._code = (this._code << 8) | this._stream.readByte();
this._range <<= 8;
}
}
return result;
};
LZMA.RangeDecoder.prototype.decodeBit = function(probs, index){
var prob = probs[index],
newBound = (this._range >>> 11) * prob;
if ( (this._code ^ 0x80000000) < (newBound ^ 0x80000000) ){
this._range = newBound;
probs[index] += (2048 - prob) >>> 5;
if ( (this._range & 0xff000000) === 0){
this._code = (this._code << 8) | this._stream.readByte();
this._range <<= 8;
}
return 0;
}
this._range -= newBound;
this._code -= newBound;
probs[index] -= prob >>> 5;
if ( (this._range & 0xff000000) === 0){
this._code = (this._code << 8) | this._stream.readByte();
this._range <<= 8;
}
return 1;
};
LZMA.initBitModels = function(probs, len){
while(len --){
probs[len] = 1024;
}
};
LZMA.BitTreeDecoder = function(numBitLevels){
this._models = [];
this._numBitLevels = numBitLevels;
};
LZMA.BitTreeDecoder.prototype.init = function(){
LZMA.initBitModels(this._models, 1 << this._numBitLevels);
};
LZMA.BitTreeDecoder.prototype.decode = function(rangeDecoder){
var m = 1, i = this._numBitLevels;
while(i --){
m = (m << 1) | rangeDecoder.decodeBit(this._models, m);
}
return m - (1 << this._numBitLevels);
};
LZMA.BitTreeDecoder.prototype.reverseDecode = function(rangeDecoder){
var m = 1, symbol = 0, i = 0, bit;
for (; i < this._numBitLevels; ++ i){
bit = rangeDecoder.decodeBit(this._models, m);
m = (m << 1) | bit;
symbol |= bit << i;
}
return symbol;
};
LZMA.reverseDecode2 = function(models, startIndex, rangeDecoder, numBitLevels){
var m = 1, symbol = 0, i = 0, bit;
for (; i < numBitLevels; ++ i){
bit = rangeDecoder.decodeBit(models, startIndex + m);
m = (m << 1) | bit;
symbol |= bit << i;
}
return symbol;
};
LZMA.LenDecoder = function(){
this._choice = [];
this._lowCoder = [];
this._midCoder = [];
this._highCoder = new LZMA.BitTreeDecoder(8);
this._numPosStates = 0;
};
LZMA.LenDecoder.prototype.create = function(numPosStates){
for (; this._numPosStates < numPosStates; ++ this._numPosStates){
this._lowCoder[this._numPosStates] = new LZMA.BitTreeDecoder(3);
this._midCoder[this._numPosStates] = new LZMA.BitTreeDecoder(3);
}
};
LZMA.LenDecoder.prototype.init = function(){
var i = this._numPosStates;
LZMA.initBitModels(this._choice, 2);
while(i --){
this._lowCoder[i].init();
this._midCoder[i].init();
}
this._highCoder.init();
};
LZMA.LenDecoder.prototype.decode = function(rangeDecoder, posState){
if (rangeDecoder.decodeBit(this._choice, 0) === 0){
return this._lowCoder[posState].decode(rangeDecoder);
}
if (rangeDecoder.decodeBit(this._choice, 1) === 0){
return 8 + this._midCoder[posState].decode(rangeDecoder);
}
return 16 + this._highCoder.decode(rangeDecoder);
};
LZMA.Decoder2 = function(){
this._decoders = [];
};
LZMA.Decoder2.prototype.init = function(){
LZMA.initBitModels(this._decoders, 0x300);
};
LZMA.Decoder2.prototype.decodeNormal = function(rangeDecoder){
var symbol = 1;
do{
symbol = (symbol << 1) | rangeDecoder.decodeBit(this._decoders, symbol);
}while(symbol < 0x100);
return symbol & 0xff;
};
LZMA.Decoder2.prototype.decodeWithMatchByte = function(rangeDecoder, matchByte){
var symbol = 1, matchBit, bit;
do{
matchBit = (matchByte >> 7) & 1;
matchByte <<= 1;
bit = rangeDecoder.decodeBit(this._decoders, ( (1 + matchBit) << 8) + symbol);
symbol = (symbol << 1) | bit;
if (matchBit !== bit){
while(symbol < 0x100){
symbol = (symbol << 1) | rangeDecoder.decodeBit(this._decoders, symbol);
}
break;
}
}while(symbol < 0x100);
return symbol & 0xff;
};
LZMA.LiteralDecoder = function(){
};
LZMA.LiteralDecoder.prototype.create = function(numPosBits, numPrevBits){
var i;
if (this._coders
&& (this._numPrevBits === numPrevBits)
&& (this._numPosBits === numPosBits) ){
return;
}
this._numPosBits = numPosBits;
this._posMask = (1 << numPosBits) - 1;
this._numPrevBits = numPrevBits;
this._coders = [];
i = 1 << (this._numPrevBits + this._numPosBits);
while(i --){
this._coders[i] = new LZMA.Decoder2();
}
};
LZMA.LiteralDecoder.prototype.init = function(){
var i = 1 << (this._numPrevBits + this._numPosBits);
while(i --){
this._coders[i].init();
}
};
LZMA.LiteralDecoder.prototype.getDecoder = function(pos, prevByte){
return this._coders[( (pos & this._posMask) << this._numPrevBits)
+ ( (prevByte & 0xff) >>> (8 - this._numPrevBits) )];
};
LZMA.Decoder = function(){
this._outWindow = new LZMA.OutWindow();
this._rangeDecoder = new LZMA.RangeDecoder();
this._isMatchDecoders = [];
this._isRepDecoders = [];
this._isRepG0Decoders = [];
this._isRepG1Decoders = [];
this._isRepG2Decoders = [];
this._isRep0LongDecoders = [];
this._posSlotDecoder = [];
this._posDecoders = [];
this._posAlignDecoder = new LZMA.BitTreeDecoder(4);
this._lenDecoder = new LZMA.LenDecoder();
this._repLenDecoder = new LZMA.LenDecoder();
this._literalDecoder = new LZMA.LiteralDecoder();
this._dictionarySize = -1;
this._dictionarySizeCheck = -1;
this._posSlotDecoder[0] = new LZMA.BitTreeDecoder(6);
this._posSlotDecoder[1] = new LZMA.BitTreeDecoder(6);
this._posSlotDecoder[2] = new LZMA.BitTreeDecoder(6);
this._posSlotDecoder[3] = new LZMA.BitTreeDecoder(6);
};
LZMA.Decoder.prototype.setDictionarySize = function(dictionarySize){
if (dictionarySize < 0){
return false;
}
if (this._dictionarySize !== dictionarySize){
this._dictionarySize = dictionarySize;
this._dictionarySizeCheck = Math.max(this._dictionarySize, 1);
this._outWindow.create( Math.max(this._dictionarySizeCheck, 4096) );
}
return true;
};
LZMA.Decoder.prototype.setLcLpPb = function(lc, lp, pb){
var numPosStates = 1 << pb;
if (lc > 8 || lp > 4 || pb > 4){
return false;
}
this._literalDecoder.create(lp, lc);
this._lenDecoder.create(numPosStates);
this._repLenDecoder.create(numPosStates);
this._posStateMask = numPosStates - 1;
return true;
};
LZMA.Decoder.prototype.init = function(){
var i = 4;
this._outWindow.init(false);
LZMA.initBitModels(this._isMatchDecoders, 192);
LZMA.initBitModels(this._isRep0LongDecoders, 192);
LZMA.initBitModels(this._isRepDecoders, 12);
LZMA.initBitModels(this._isRepG0Decoders, 12);
LZMA.initBitModels(this._isRepG1Decoders, 12);
LZMA.initBitModels(this._isRepG2Decoders, 12);
LZMA.initBitModels(this._posDecoders, 114);
this._literalDecoder.init();
while(i --){
this._posSlotDecoder[i].init();
}
this._lenDecoder.init();
this._repLenDecoder.init();
this._posAlignDecoder.init();
this._rangeDecoder.init();
};
LZMA.Decoder.prototype.decode = function(inStream, outStream, outSize){
var state = 0, rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0, nowPos64 = 0, prevByte = 0,
posState, decoder2, len, distance, posSlot, numDirectBits;
this._rangeDecoder.setStream(inStream);
this._outWindow.setStream(outStream);
this.init();
while(outSize < 0 || nowPos64 < outSize){
posState = nowPos64 & this._posStateMask;
if (this._rangeDecoder.decodeBit(this._isMatchDecoders, (state << 4) + posState) === 0){
decoder2 = this._literalDecoder.getDecoder(nowPos64 ++, prevByte);
if (state >= 7){
prevByte = decoder2.decodeWithMatchByte(this._rangeDecoder, this._outWindow.getByte(rep0) );
}else{
prevByte = decoder2.decodeNormal(this._rangeDecoder);
}
this._outWindow.putByte(prevByte);
state = state < 4? 0: state - (state < 10? 3: 6);
}else{
if (this._rangeDecoder.decodeBit(this._isRepDecoders, state) === 1){
len = 0;
if (this._rangeDecoder.decodeBit(this._isRepG0Decoders, state) === 0){
if (this._rangeDecoder.decodeBit(this._isRep0LongDecoders, (state << 4) + posState) === 0){
state = state < 7? 9: 11;
len = 1;
}
}else{
if (this._rangeDecoder.decodeBit(this._isRepG1Decoders, state) === 0){
distance = rep1;
}else{
if (this._rangeDecoder.decodeBit(this._isRepG2Decoders, state) === 0){
distance = rep2;
}else{
distance = rep3;
rep3 = rep2;
}
rep2 = rep1;
}
rep1 = rep0;
rep0 = distance;
}
if (len === 0){
len = 2 + this._repLenDecoder.decode(this._rangeDecoder, posState);
state = state < 7? 8: 11;
}
}else{
rep3 = rep2;
rep2 = rep1;
rep1 = rep0;
len = 2 + this._lenDecoder.decode(this._rangeDecoder, posState);
state = state < 7? 7: 10;
posSlot = this._posSlotDecoder[len <= 5? len - 2: 3].decode(this._rangeDecoder);
if (posSlot >= 4){
numDirectBits = (posSlot >> 1) - 1;
rep0 = (2 | (posSlot & 1) ) << numDirectBits;
if (posSlot < 14){
rep0 += LZMA.reverseDecode2(this._posDecoders,
rep0 - posSlot - 1, this._rangeDecoder, numDirectBits);
}else{
rep0 += this._rangeDecoder.decodeDirectBits(numDirectBits - 4) << 4;
rep0 += this._posAlignDecoder.reverseDecode(this._rangeDecoder);
if (rep0 < 0){
if (rep0 === -1){
break;
}
return false;
}
}
}else{
rep0 = posSlot;
}
}
if (rep0 >= nowPos64 || rep0 >= this._dictionarySizeCheck){
return false;
}
this._outWindow.copyBlock(rep0, len);
nowPos64 += len;
prevByte = this._outWindow.getByte(0);
}
}
this._outWindow.flush();
this._outWindow.releaseStream();
this._rangeDecoder.releaseStream();
return true;
};
LZMA.Decoder.prototype.setDecoderProperties = function(properties){
var value, lc, lp, pb, dictionarySize;
if (properties.size < 5){
return false;
}
value = properties.readByte();
lc = value % 9;
value = ~~(value / 9);
lp = value % 5;
pb = ~~(value / 5);
if ( !this.setLcLpPb(lc, lp, pb) ){
return false;
}
dictionarySize = properties.readByte();
dictionarySize |= properties.readByte() << 8;
dictionarySize |= properties.readByte() << 16;
dictionarySize += properties.readByte() * 16777216;
return this.setDictionarySize(dictionarySize);
};
LZMA.decompress = function(properties, inStream, outStream, outSize){
var decoder = new LZMA.Decoder();
if ( !decoder.setDecoderProperties(properties) ){
throw "Incorrect stream properties";
}
if ( !decoder.decode(inStream, outStream, outSize) ){
throw "Error in data stream";
}
return true;
};
<!doctype html>
<html lang="en">
<head>
<title>three.js webgl - io - CTM loader</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
font-family: Monospace;
background-color: #000;
color: #fff;
margin: 0px;
overflow: hidden;
}
#info {
color: #fff;
position: absolute;
top: 10px;
width: 100%;
text-align: center;
z-index: 100;
display:block;
}
#info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
</style>
</head>
<body>
<div id="info">
<a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> -
<a href="http://openctm.sourceforge.net/" target="_blank">CTM format</a> loader test -
using <a href="http://code.google.com/p/js-openctm/">js-openctm</a> -
models from <a href="http://www.sci.utah.edu/~wald/animrep/" target="_blank">The Utah 3D Animation Repository</a>,
<a href="http://www.ir-ltd.net/infinite-3d-head-scan-released/" target="_blank">Lee Perry-Smith</a>,
<a href="http://www.davidoreilly.com/2009/01/walt-disneys-head-on-a-plate" target="_blank">David OReilly</a>
</div>
<script src="../build/Three.js"></script>
<script src="js/ctm/lzma.js"></script>
<script src="js/ctm/ctm.js"></script>
<script src="js/ctm/CTMLoader.js"></script>
<script src="js/Detector.js"></script>
<script src="js/Stats.js"></script>
<script>
var SCREEN_WIDTH = window.innerWidth;
var SCREEN_HEIGHT = window.innerHeight;
var container, stats;
var camera, scene, renderer;
var mesh, zmesh, geometry;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
document.addEventListener('mousemove', onDocumentMouseMove, false);
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 20, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 2000 );
camera.position.z = 800;
scene = new THREE.Scene();
scene.fog = new THREE.Fog( 0x050505, 800, camera.far );
var path = "textures/cube/SwedishRoyalCastle/";
var format = '.jpg';
var urls = [
path + 'px' + format, path + 'nx' + format,
path + 'py' + format, path + 'ny' + format,
path + 'pz' + format, path + 'nz' + format
];
reflectionCube = THREE.ImageUtils.loadTextureCube( urls );
// LIGHTS
var ambient = new THREE.AmbientLight( 0xaaaaaa );
scene.add( ambient );
var directionalLight = new THREE.DirectionalLight( 0xffeedd );
directionalLight.position.set( 0, 0, 1 ).normalize();
scene.add( directionalLight );
// RENDERER
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
renderer.setClearColor( scene.fog.color, 1 );
renderer.domElement.style.position = "relative";
container.appendChild( renderer.domElement );
//
renderer.gammaInput = true;
renderer.gammaOutput = true;
// STATS
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
stats.domElement.style.zIndex = 100;
container.appendChild( stats.domElement );
// EVENTS
window.addEventListener( 'resize', onWindowResize, false );
// LOADER
var loader = new THREE.CTMLoader();
loader.load( "ctm/ben.ctm", function( geometry ) {
var material = new THREE.MeshLambertMaterial( { color: 0xffaa00, map: THREE.ImageUtils.loadTexture( "textures/ash_uvgrid01.jpg" ), envMap: reflectionCube, combine: THREE.MixOperation, reflectivity: 0.3 } );
callbackModel( geometry, 450, material, 0, -200, 0, 0, 0 );
} );
loader.load( "ctm/WaltHead.ctm", function( geometry ) {
//geometry.computeVertexNormals();
var material = new THREE.MeshLambertMaterial( { color: 0xffffff, envMaps: reflectionCube, combine: THREE.MixOperation, reflectivity: 0.3 } );
callbackModel( geometry, 5, material, -200, 0, 0, 0, 0 );
});
loader.load( "ctm/LeePerry.ctm", function( geometry ) {
var material = new THREE.MeshPhongMaterial( { color: 0xffffff, specular: 0x444444, shininess: 30, map: THREE.ImageUtils.loadTexture( "obj/leeperrysmith/Map-COL.jpg" ), envMaps: reflectionCube, combine: THREE.MixOperation, reflectivity: 0.3 } );
callbackModel( geometry, 1300, material, 200, 50, 0, 0, 0 );
});
}
function callbackModel( geometry, s, material, x, y, z, rx, ry ) {
var mesh = new THREE.Mesh( geometry, material );
mesh.position.set( x, y, z );
mesh.scale.set( s, s, s );
mesh.rotation.x = rx;
mesh.rotation.z = ry;
//mesh.flipSided = true;
scene.add( mesh );
}
//
function onWindowResize( event ) {
SCREEN_WIDTH = window.innerWidth;
SCREEN_HEIGHT = window.innerHeight;
renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
camera.aspect = SCREEN_WIDTH / SCREEN_HEIGHT;
camera.updateProjectionMatrix();
}
function onDocumentMouseMove( event ) {
mouseX = ( event.clientX - windowHalfX );
mouseY = ( event.clientY - windowHalfY );
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
camera.position.x += ( mouseX - camera.position.x ) * .05;
camera.position.y += ( - mouseY - camera.position.y ) * .05;
camera.lookAt( scene.position );
renderer.render( scene, camera );
}
</script>
</body>
</html>
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