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threejs/examples/js/loaders/RGBMLoader.js

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( function () {
class RGBMLoader extends THREE.DataTextureLoader {
constructor( manager ) {
super( manager );
this.type = THREE.HalfFloatType;
this.maxRange = 7; // more information about this property at https://iwasbeingirony.blogspot.com/2010/06/difference-between-rgbm-and-rgbd.html
}
setDataType( value ) {
this.type = value;
return this;
}
setMaxRange( value ) {
this.maxRange = value;
return this;
}
loadCubemap( urls, onLoad, onProgress, onError ) {
const texture = new THREE.CubeTexture();
let loaded = 0;
const scope = this;
function loadTexture( i ) {
scope.load( urls[ i ], function ( image ) {
texture.images[ i ] = image;
loaded ++;
if ( loaded === 6 ) {
texture.needsUpdate = true;
if ( onLoad ) onLoad( texture );
}
}, undefined, onError );
}
for ( let i = 0; i < urls.length; ++ i ) {
loadTexture( i );
}
texture.type = this.type;
texture.format = THREE.RGBAFormat;
texture.minFilter = THREE.LinearFilter;
texture.generateMipmaps = false;
return texture;
}
parse( buffer ) {
const img = UPNG.decode( buffer );
const rgba = UPNG.toRGBA8( img )[ 0 ];
const data = new Uint8Array( rgba );
const size = img.width * img.height * 4;
const output = this.type === THREE.HalfFloatType ? new Uint16Array( size ) : new Float32Array( size );
// decode RGBM
for ( let i = 0; i < data.length; i += 4 ) {
const r = data[ i + 0 ] / 255;
const g = data[ i + 1 ] / 255;
const b = data[ i + 2 ] / 255;
const a = data[ i + 3 ] / 255;
if ( this.type === THREE.HalfFloatType ) {
output[ i + 0 ] = THREE.DataUtils.toHalfFloat( Math.min( r * a * this.maxRange, 65504 ) );
output[ i + 1 ] = THREE.DataUtils.toHalfFloat( Math.min( g * a * this.maxRange, 65504 ) );
output[ i + 2 ] = THREE.DataUtils.toHalfFloat( Math.min( b * a * this.maxRange, 65504 ) );
output[ i + 3 ] = THREE.DataUtils.toHalfFloat( 1 );
} else {
output[ i + 0 ] = r * a * this.maxRange;
output[ i + 1 ] = g * a * this.maxRange;
output[ i + 2 ] = b * a * this.maxRange;
output[ i + 3 ] = 1;
}
}
return {
width: img.width,
height: img.height,
data: output,
format: THREE.RGBAFormat,
type: this.type,
flipY: true
};
}
}
// from https://github.com/photopea/UPNG.js (MIT License)
var UPNG = {};
UPNG.toRGBA8 = function ( out ) {
var w = out.width,
h = out.height;
if ( out.tabs.acTL == null ) return [ UPNG.toRGBA8.decodeImage( out.data, w, h, out ).buffer ];
var frms = [];
if ( out.frames[ 0 ].data == null ) out.frames[ 0 ].data = out.data;
var len = w * h * 4,
img = new Uint8Array( len ),
empty = new Uint8Array( len ),
prev = new Uint8Array( len );
for ( var i = 0; i < out.frames.length; i ++ ) {
var frm = out.frames[ i ];
var fx = frm.rect.x,
fy = frm.rect.y,
fw = frm.rect.width,
fh = frm.rect.height;
var fdata = UPNG.toRGBA8.decodeImage( frm.data, fw, fh, out );
if ( i != 0 ) for ( var j = 0; j < len; j ++ ) prev[ j ] = img[ j ];
if ( frm.blend == 0 ) UPNG._copyTile( fdata, fw, fh, img, w, h, fx, fy, 0 ); else if ( frm.blend == 1 ) UPNG._copyTile( fdata, fw, fh, img, w, h, fx, fy, 1 );
frms.push( img.buffer.slice( 0 ) );
if ( frm.dispose == 1 ) UPNG._copyTile( empty, fw, fh, img, w, h, fx, fy, 0 ); else if ( frm.dispose == 2 ) for ( var j = 0; j < len; j ++ ) img[ j ] = prev[ j ];
}
return frms;
};
UPNG.toRGBA8.decodeImage = function ( data, w, h, out ) {
var area = w * h,
bpp = UPNG.decode._getBPP( out );
var bpl = Math.ceil( w * bpp / 8 ); // bytes per line
var bf = new Uint8Array( area * 4 ),
bf32 = new Uint32Array( bf.buffer );
var ctype = out.ctype,
depth = out.depth;
var rs = UPNG._bin.readUshort;
if ( ctype == 6 ) {
// RGB + alpha
var qarea = area << 2;
if ( depth == 8 ) for ( var i = 0; i < qarea; i += 4 ) {
bf[ i ] = data[ i ];
bf[ i + 1 ] = data[ i + 1 ];
bf[ i + 2 ] = data[ i + 2 ];
bf[ i + 3 ] = data[ i + 3 ];
}
if ( depth == 16 ) for ( var i = 0; i < qarea; i ++ ) {
bf[ i ] = data[ i << 1 ];
}
} else if ( ctype == 2 ) {
// RGB
var ts = out.tabs[ 'tRNS' ];
if ( ts == null ) {
if ( depth == 8 ) for ( var i = 0; i < area; i ++ ) {
var ti = i * 3;
bf32[ i ] = 255 << 24 | data[ ti + 2 ] << 16 | data[ ti + 1 ] << 8 | data[ ti ];
}
if ( depth == 16 ) for ( var i = 0; i < area; i ++ ) {
var ti = i * 6;
bf32[ i ] = 255 << 24 | data[ ti + 4 ] << 16 | data[ ti + 2 ] << 8 | data[ ti ];
}
} else {
var tr = ts[ 0 ],
tg = ts[ 1 ],
tb = ts[ 2 ];
if ( depth == 8 ) for ( var i = 0; i < area; i ++ ) {
var qi = i << 2,
ti = i * 3;
bf32[ i ] = 255 << 24 | data[ ti + 2 ] << 16 | data[ ti + 1 ] << 8 | data[ ti ];
if ( data[ ti ] == tr && data[ ti + 1 ] == tg && data[ ti + 2 ] == tb ) bf[ qi + 3 ] = 0;
}
if ( depth == 16 ) for ( var i = 0; i < area; i ++ ) {
var qi = i << 2,
ti = i * 6;
bf32[ i ] = 255 << 24 | data[ ti + 4 ] << 16 | data[ ti + 2 ] << 8 | data[ ti ];
if ( rs( data, ti ) == tr && rs( data, ti + 2 ) == tg && rs( data, ti + 4 ) == tb ) bf[ qi + 3 ] = 0;
}
}
} else if ( ctype == 3 ) {
// palette
var p = out.tabs[ 'PLTE' ],
ap = out.tabs[ 'tRNS' ],
tl = ap ? ap.length : 0;
//console.log(p, ap);
if ( depth == 1 ) for ( var y = 0; y < h; y ++ ) {
var s0 = y * bpl,
t0 = y * w;
for ( var i = 0; i < w; i ++ ) {
var qi = t0 + i << 2,
j = data[ s0 + ( i >> 3 ) ] >> 7 - ( ( i & 7 ) << 0 ) & 1,
cj = 3 * j;
bf[ qi ] = p[ cj ];
bf[ qi + 1 ] = p[ cj + 1 ];
bf[ qi + 2 ] = p[ cj + 2 ];
bf[ qi + 3 ] = j < tl ? ap[ j ] : 255;
}
}
if ( depth == 2 ) for ( var y = 0; y < h; y ++ ) {
var s0 = y * bpl,
t0 = y * w;
for ( var i = 0; i < w; i ++ ) {
var qi = t0 + i << 2,
j = data[ s0 + ( i >> 2 ) ] >> 6 - ( ( i & 3 ) << 1 ) & 3,
cj = 3 * j;
bf[ qi ] = p[ cj ];
bf[ qi + 1 ] = p[ cj + 1 ];
bf[ qi + 2 ] = p[ cj + 2 ];
bf[ qi + 3 ] = j < tl ? ap[ j ] : 255;
}
}
if ( depth == 4 ) for ( var y = 0; y < h; y ++ ) {
var s0 = y * bpl,
t0 = y * w;
for ( var i = 0; i < w; i ++ ) {
var qi = t0 + i << 2,
j = data[ s0 + ( i >> 1 ) ] >> 4 - ( ( i & 1 ) << 2 ) & 15,
cj = 3 * j;
bf[ qi ] = p[ cj ];
bf[ qi + 1 ] = p[ cj + 1 ];
bf[ qi + 2 ] = p[ cj + 2 ];
bf[ qi + 3 ] = j < tl ? ap[ j ] : 255;
}
}
if ( depth == 8 ) for ( var i = 0; i < area; i ++ ) {
var qi = i << 2,
j = data[ i ],
cj = 3 * j;
bf[ qi ] = p[ cj ];
bf[ qi + 1 ] = p[ cj + 1 ];
bf[ qi + 2 ] = p[ cj + 2 ];
bf[ qi + 3 ] = j < tl ? ap[ j ] : 255;
}
} else if ( ctype == 4 ) {
// gray + alpha
if ( depth == 8 ) for ( var i = 0; i < area; i ++ ) {
var qi = i << 2,
di = i << 1,
gr = data[ di ];
bf[ qi ] = gr;
bf[ qi + 1 ] = gr;
bf[ qi + 2 ] = gr;
bf[ qi + 3 ] = data[ di + 1 ];
}
if ( depth == 16 ) for ( var i = 0; i < area; i ++ ) {
var qi = i << 2,
di = i << 2,
gr = data[ di ];
bf[ qi ] = gr;
bf[ qi + 1 ] = gr;
bf[ qi + 2 ] = gr;
bf[ qi + 3 ] = data[ di + 2 ];
}
} else if ( ctype == 0 ) {
// gray
var tr = out.tabs[ 'tRNS' ] ? out.tabs[ 'tRNS' ] : - 1;
for ( var y = 0; y < h; y ++ ) {
var off = y * bpl,
to = y * w;
if ( depth == 1 ) for ( var x = 0; x < w; x ++ ) {
var gr = 255 * ( data[ off + ( x >>> 3 ) ] >>> 7 - ( x & 7 ) & 1 ),
al = gr == tr * 255 ? 0 : 255;
bf32[ to + x ] = al << 24 | gr << 16 | gr << 8 | gr;
} else if ( depth == 2 ) for ( var x = 0; x < w; x ++ ) {
var gr = 85 * ( data[ off + ( x >>> 2 ) ] >>> 6 - ( ( x & 3 ) << 1 ) & 3 ),
al = gr == tr * 85 ? 0 : 255;
bf32[ to + x ] = al << 24 | gr << 16 | gr << 8 | gr;
} else if ( depth == 4 ) for ( var x = 0; x < w; x ++ ) {
var gr = 17 * ( data[ off + ( x >>> 1 ) ] >>> 4 - ( ( x & 1 ) << 2 ) & 15 ),
al = gr == tr * 17 ? 0 : 255;
bf32[ to + x ] = al << 24 | gr << 16 | gr << 8 | gr;
} else if ( depth == 8 ) for ( var x = 0; x < w; x ++ ) {
var gr = data[ off + x ],
al = gr == tr ? 0 : 255;
bf32[ to + x ] = al << 24 | gr << 16 | gr << 8 | gr;
} else if ( depth == 16 ) for ( var x = 0; x < w; x ++ ) {
var gr = data[ off + ( x << 1 ) ],
al = rs( data, off + ( x << 1 ) ) == tr ? 0 : 255;
bf32[ to + x ] = al << 24 | gr << 16 | gr << 8 | gr;
}
}
}
//console.log(Date.now()-time);
return bf;
};
UPNG.decode = function ( buff ) {
var data = new Uint8Array( buff ),
offset = 8,
bin = UPNG._bin,
rUs = bin.readUshort,
rUi = bin.readUint;
var out = {
tabs: {},
frames: []
};
var dd = new Uint8Array( data.length ),
doff = 0; // put all IDAT data into it
var fd,
foff = 0; // frames
var text, keyw, bfr;
var mgck = [ 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a ];
for ( var i = 0; i < 8; i ++ ) if ( data[ i ] != mgck[ i ] ) throw new Error( 'The input is not a PNG file!' );
while ( offset < data.length ) {
var len = bin.readUint( data, offset );
offset += 4;
var type = bin.readASCII( data, offset, 4 );
offset += 4;
//console.log(type,len);
if ( type == 'IHDR' ) {
UPNG.decode._IHDR( data, offset, out );
} else if ( type == 'CgBI' ) {
out.tabs[ type ] = data.slice( offset, offset + 4 );
} else if ( type == 'IDAT' ) {
for ( var i = 0; i < len; i ++ ) dd[ doff + i ] = data[ offset + i ];
doff += len;
} else if ( type == 'acTL' ) {
out.tabs[ type ] = {
num_frames: rUi( data, offset ),
num_plays: rUi( data, offset + 4 )
};
fd = new Uint8Array( data.length );
} else if ( type == 'fcTL' ) {
if ( foff != 0 ) {
var fr = out.frames[ out.frames.length - 1 ];
fr.data = UPNG.decode._decompress( out, fd.slice( 0, foff ), fr.rect.width, fr.rect.height );
foff = 0;
}
var rct = {
x: rUi( data, offset + 12 ),
y: rUi( data, offset + 16 ),
width: rUi( data, offset + 4 ),
height: rUi( data, offset + 8 )
};
var del = rUs( data, offset + 22 );
del = rUs( data, offset + 20 ) / ( del == 0 ? 100 : del );
var frm = {
rect: rct,
delay: Math.round( del * 1000 ),
dispose: data[ offset + 24 ],
blend: data[ offset + 25 ]
};
//console.log(frm);
out.frames.push( frm );
} else if ( type == 'fdAT' ) {
for ( var i = 0; i < len - 4; i ++ ) fd[ foff + i ] = data[ offset + i + 4 ];
foff += len - 4;
} else if ( type == 'pHYs' ) {
out.tabs[ type ] = [ bin.readUint( data, offset ), bin.readUint( data, offset + 4 ), data[ offset + 8 ] ];
} else if ( type == 'cHRM' ) {
out.tabs[ type ] = [];
for ( var i = 0; i < 8; i ++ ) out.tabs[ type ].push( bin.readUint( data, offset + i * 4 ) );
} else if ( type == 'tEXt' || type == 'zTXt' ) {
if ( out.tabs[ type ] == null ) out.tabs[ type ] = {};
var nz = bin.nextZero( data, offset );
keyw = bin.readASCII( data, offset, nz - offset );
var tl = offset + len - nz - 1;
if ( type == 'tEXt' ) text = bin.readASCII( data, nz + 1, tl ); else {
bfr = UPNG.decode._inflate( data.slice( nz + 2, nz + 2 + tl ) );
text = bin.readUTF8( bfr, 0, bfr.length );
}
out.tabs[ type ][ keyw ] = text;
} else if ( type == 'iTXt' ) {
if ( out.tabs[ type ] == null ) out.tabs[ type ] = {};
var nz = 0,
off = offset;
nz = bin.nextZero( data, off );
keyw = bin.readASCII( data, off, nz - off );
off = nz + 1;
var cflag = data[ off ];
off += 2;
nz = bin.nextZero( data, off );
bin.readASCII( data, off, nz - off );
off = nz + 1;
nz = bin.nextZero( data, off );
bin.readUTF8( data, off, nz - off );
off = nz + 1;
var tl = len - ( off - offset );
if ( cflag == 0 ) text = bin.readUTF8( data, off, tl ); else {
bfr = UPNG.decode._inflate( data.slice( off, off + tl ) );
text = bin.readUTF8( bfr, 0, bfr.length );
}
out.tabs[ type ][ keyw ] = text;
} else if ( type == 'PLTE' ) {
out.tabs[ type ] = bin.readBytes( data, offset, len );
} else if ( type == 'hIST' ) {
var pl = out.tabs[ 'PLTE' ].length / 3;
out.tabs[ type ] = [];
for ( var i = 0; i < pl; i ++ ) out.tabs[ type ].push( rUs( data, offset + i * 2 ) );
} else if ( type == 'tRNS' ) {
if ( out.ctype == 3 ) out.tabs[ type ] = bin.readBytes( data, offset, len ); else if ( out.ctype == 0 ) out.tabs[ type ] = rUs( data, offset ); else if ( out.ctype == 2 ) out.tabs[ type ] = [ rUs( data, offset ), rUs( data, offset + 2 ), rUs( data, offset + 4 ) ];
//else console.log("tRNS for unsupported color type",out.ctype, len);
} else if ( type == 'gAMA' ) out.tabs[ type ] = bin.readUint( data, offset ) / 100000; else if ( type == 'sRGB' ) out.tabs[ type ] = data[ offset ]; else if ( type == 'bKGD' ) {
if ( out.ctype == 0 || out.ctype == 4 ) out.tabs[ type ] = [ rUs( data, offset ) ]; else if ( out.ctype == 2 || out.ctype == 6 ) out.tabs[ type ] = [ rUs( data, offset ), rUs( data, offset + 2 ), rUs( data, offset + 4 ) ]; else if ( out.ctype == 3 ) out.tabs[ type ] = data[ offset ];
} else if ( type == 'IEND' ) {
break;
}
//else { console.log("unknown chunk type", type, len); out.tabs[type]=data.slice(offset,offset+len); }
offset += len;
bin.readUint( data, offset );
offset += 4;
}
if ( foff != 0 ) {
var fr = out.frames[ out.frames.length - 1 ];
fr.data = UPNG.decode._decompress( out, fd.slice( 0, foff ), fr.rect.width, fr.rect.height );
}
out.data = UPNG.decode._decompress( out, dd, out.width, out.height );
delete out.compress;
delete out.interlace;
delete out.filter;
return out;
};
UPNG.decode._decompress = function ( out, dd, w, h ) {
var bpp = UPNG.decode._getBPP( out ),
bpl = Math.ceil( w * bpp / 8 ),
buff = new Uint8Array( ( bpl + 1 + out.interlace ) * h );
if ( out.tabs[ 'CgBI' ] ) dd = UPNG.inflateRaw( dd, buff ); else dd = UPNG.decode._inflate( dd, buff );
if ( out.interlace == 0 ) dd = UPNG.decode._filterZero( dd, out, 0, w, h ); else if ( out.interlace == 1 ) dd = UPNG.decode._readInterlace( dd, out );
return dd;
};
UPNG.decode._inflate = function ( data, buff ) {
var out = UPNG[ 'inflateRaw' ]( new Uint8Array( data.buffer, 2, data.length - 6 ), buff );
return out;
};
UPNG.inflateRaw = function () {
var H = {};
H.H = {};
H.H.N = function ( N, W ) {
var R = Uint8Array,
i = 0,
m = 0,
J = 0,
h = 0,
Q = 0,
X = 0,
u = 0,
w = 0,
d = 0,
v,
C;
if ( N[ 0 ] == 3 && N[ 1 ] == 0 ) return W ? W : new R( 0 );
var V = H.H,
n = V.b,
A = V.e,
l = V.R,
M = V.n,
I = V.A,
e = V.Z,
b = V.m,
Z = W == null;
if ( Z ) W = new R( N.length >>> 2 << 5 );
while ( i == 0 ) {
i = n( N, d, 1 );
m = n( N, d + 1, 2 );
d += 3;
if ( m == 0 ) {
if ( ( d & 7 ) != 0 ) d += 8 - ( d & 7 );
var D = ( d >>> 3 ) + 4,
q = N[ D - 4 ] | N[ D - 3 ] << 8;
if ( Z ) W = H.H.W( W, w + q );
W.set( new R( N.buffer, N.byteOffset + D, q ), w );
d = D + q << 3;
w += q;
continue;
}
if ( Z ) W = H.H.W( W, w + ( 1 << 17 ) );
if ( m == 1 ) {
v = b.J;
C = b.h;
X = ( 1 << 9 ) - 1;
u = ( 1 << 5 ) - 1;
}
if ( m == 2 ) {
J = A( N, d, 5 ) + 257;
h = A( N, d + 5, 5 ) + 1;
Q = A( N, d + 10, 4 ) + 4;
d += 14;
var j = 1;
for ( var c = 0; c < 38; c += 2 ) {
b.Q[ c ] = 0;
b.Q[ c + 1 ] = 0;
}
for ( var c = 0; c < Q; c ++ ) {
var K = A( N, d + c * 3, 3 );
b.Q[ ( b.X[ c ] << 1 ) + 1 ] = K;
if ( K > j ) j = K;
}
d += 3 * Q;
M( b.Q, j );
I( b.Q, j, b.u );
v = b.w;
C = b.d;
d = l( b.u, ( 1 << j ) - 1, J + h, N, d, b.v );
var r = V.V( b.v, 0, J, b.C );
X = ( 1 << r ) - 1;
var S = V.V( b.v, J, h, b.D );
u = ( 1 << S ) - 1;
M( b.C, r );
I( b.C, r, v );
M( b.D, S );
I( b.D, S, C );
}
while ( ! 0 ) {
var T = v[ e( N, d ) & X ];
d += T & 15;
var p = T >>> 4;
if ( p >>> 8 == 0 ) {
W[ w ++ ] = p;
} else if ( p == 256 ) {
break;
} else {
var z = w + p - 254;
if ( p > 264 ) {
var _ = b.q[ p - 257 ];
z = w + ( _ >>> 3 ) + A( N, d, _ & 7 );
d += _ & 7;
}
var $ = C[ e( N, d ) & u ];
d += $ & 15;
var s = $ >>> 4,
Y = b.c[ s ],
a = ( Y >>> 4 ) + n( N, d, Y & 15 );
d += Y & 15;
while ( w < z ) {
W[ w ] = W[ w ++ - a ];
W[ w ] = W[ w ++ - a ];
W[ w ] = W[ w ++ - a ];
W[ w ] = W[ w ++ - a ];
}
w = z;
}
}
}
return W.length == w ? W : W.slice( 0, w );
};
H.H.W = function ( N, W ) {
var R = N.length;
if ( W <= R ) return N;
var V = new Uint8Array( R << 1 );
V.set( N, 0 );
return V;
};
H.H.R = function ( N, W, R, V, n, A ) {
var l = H.H.e,
M = H.H.Z,
I = 0;
while ( I < R ) {
var e = N[ M( V, n ) & W ];
n += e & 15;
var b = e >>> 4;
if ( b <= 15 ) {
A[ I ] = b;
I ++;
} else {
var Z = 0,
m = 0;
if ( b == 16 ) {
m = 3 + l( V, n, 2 );
n += 2;
Z = A[ I - 1 ];
} else if ( b == 17 ) {
m = 3 + l( V, n, 3 );
n += 3;
} else if ( b == 18 ) {
m = 11 + l( V, n, 7 );
n += 7;
}
var J = I + m;
while ( I < J ) {
A[ I ] = Z;
I ++;
}
}
}
return n;
};
H.H.V = function ( N, W, R, V ) {
var n = 0,
A = 0,
l = V.length >>> 1;
while ( A < R ) {
var M = N[ A + W ];
V[ A << 1 ] = 0;
V[ ( A << 1 ) + 1 ] = M;
if ( M > n ) n = M;
A ++;
}
while ( A < l ) {
V[ A << 1 ] = 0;
V[ ( A << 1 ) + 1 ] = 0;
A ++;
}
return n;
};
H.H.n = function ( N, W ) {
var R = H.H.m,
V = N.length,
n,
A,
l,
M,
I,
e = R.j;
for ( var M = 0; M <= W; M ++ ) e[ M ] = 0;
for ( M = 1; M < V; M += 2 ) e[ N[ M ] ] ++;
var b = R.K;
n = 0;
e[ 0 ] = 0;
for ( A = 1; A <= W; A ++ ) {
n = n + e[ A - 1 ] << 1;
b[ A ] = n;
}
for ( l = 0; l < V; l += 2 ) {
I = N[ l + 1 ];
if ( I != 0 ) {
N[ l ] = b[ I ];
b[ I ] ++;
}
}
};
H.H.A = function ( N, W, R ) {
var V = N.length,
n = H.H.m,
A = n.r;
for ( var l = 0; l < V; l += 2 ) if ( N[ l + 1 ] != 0 ) {
var M = l >> 1,
I = N[ l + 1 ],
e = M << 4 | I,
b = W - I,
Z = N[ l ] << b,
m = Z + ( 1 << b );
while ( Z != m ) {
var J = A[ Z ] >>> 15 - W;
R[ J ] = e;
Z ++;
}
}
};
H.H.l = function ( N, W ) {
var R = H.H.m.r,
V = 15 - W;
for ( var n = 0; n < N.length; n += 2 ) {
var A = N[ n ] << W - N[ n + 1 ];
N[ n ] = R[ A ] >>> V;
}
};
H.H.M = function ( N, W, R ) {
R = R << ( W & 7 );
var V = W >>> 3;
N[ V ] |= R;
N[ V + 1 ] |= R >>> 8;
};
H.H.I = function ( N, W, R ) {
R = R << ( W & 7 );
var V = W >>> 3;
N[ V ] |= R;
N[ V + 1 ] |= R >>> 8;
N[ V + 2 ] |= R >>> 16;
};
H.H.e = function ( N, W, R ) {
return ( N[ W >>> 3 ] | N[ ( W >>> 3 ) + 1 ] << 8 ) >>> ( W & 7 ) & ( 1 << R ) - 1;
};
H.H.b = function ( N, W, R ) {
return ( N[ W >>> 3 ] | N[ ( W >>> 3 ) + 1 ] << 8 | N[ ( W >>> 3 ) + 2 ] << 16 ) >>> ( W & 7 ) & ( 1 << R ) - 1;
};
H.H.Z = function ( N, W ) {
return ( N[ W >>> 3 ] | N[ ( W >>> 3 ) + 1 ] << 8 | N[ ( W >>> 3 ) + 2 ] << 16 ) >>> ( W & 7 );
};
H.H.i = function ( N, W ) {
return ( N[ W >>> 3 ] | N[ ( W >>> 3 ) + 1 ] << 8 | N[ ( W >>> 3 ) + 2 ] << 16 | N[ ( W >>> 3 ) + 3 ] << 24 ) >>> ( W & 7 );
};
H.H.m = function () {
var N = Uint16Array,
W = Uint32Array;
return {
K: new N( 16 ),
j: new N( 16 ),
X: [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ],
S: [ 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 999, 999, 999 ],
T: [ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 0, 0, 0 ],
q: new N( 32 ),
p: [ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 65535, 65535 ],
z: [ 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 0, 0 ],
c: new W( 32 ),
J: new N( 512 ),
_: [],
h: new N( 32 ),
$: [],
w: new N( 32768 ),
C: [],
v: [],
d: new N( 32768 ),
D: [],
u: new N( 512 ),
Q: [],
r: new N( 1 << 15 ),
s: new W( 286 ),
Y: new W( 30 ),
a: new W( 19 ),
t: new W( 15e3 ),
k: new N( 1 << 16 ),
g: new N( 1 << 15 )
};
}();
( function () {
var N = H.H.m,
W = 1 << 15;
for ( var R = 0; R < W; R ++ ) {
var V = R;
V = ( V & 2863311530 ) >>> 1 | ( V & 1431655765 ) << 1;
V = ( V & 3435973836 ) >>> 2 | ( V & 858993459 ) << 2;
V = ( V & 4042322160 ) >>> 4 | ( V & 252645135 ) << 4;
V = ( V & 4278255360 ) >>> 8 | ( V & 16711935 ) << 8;
N.r[ R ] = ( V >>> 16 | V << 16 ) >>> 17;
}
function n( A, l, M ) {
while ( l -- != 0 ) A.push( 0, M );
}
for ( var R = 0; R < 32; R ++ ) {
N.q[ R ] = N.S[ R ] << 3 | N.T[ R ];
N.c[ R ] = N.p[ R ] << 4 | N.z[ R ];
}
n( N._, 144, 8 );
n( N._, 255 - 143, 9 );
n( N._, 279 - 255, 7 );
n( N._, 287 - 279, 8 );
H.H.n( N._, 9 );
H.H.A( N._, 9, N.J );
H.H.l( N._, 9 );
n( N.$, 32, 5 );
H.H.n( N.$, 5 );
H.H.A( N.$, 5, N.h );
H.H.l( N.$, 5 );
n( N.Q, 19, 0 );
n( N.C, 286, 0 );
n( N.D, 30, 0 );
n( N.v, 320, 0 );
} )();
return H.H.N;
}();
UPNG.decode._readInterlace = function ( data, out ) {
var w = out.width,
h = out.height;
var bpp = UPNG.decode._getBPP( out ),
cbpp = bpp >> 3,
bpl = Math.ceil( w * bpp / 8 );
var img = new Uint8Array( h * bpl );
var di = 0;
var starting_row = [ 0, 0, 4, 0, 2, 0, 1 ];
var starting_col = [ 0, 4, 0, 2, 0, 1, 0 ];
var row_increment = [ 8, 8, 8, 4, 4, 2, 2 ];
var col_increment = [ 8, 8, 4, 4, 2, 2, 1 ];
var pass = 0;
while ( pass < 7 ) {
var ri = row_increment[ pass ],
ci = col_increment[ pass ];
var sw = 0,
sh = 0;
var cr = starting_row[ pass ];
while ( cr < h ) {
cr += ri;
sh ++;
}
var cc = starting_col[ pass ];
while ( cc < w ) {
cc += ci;
sw ++;
}
var bpll = Math.ceil( sw * bpp / 8 );
UPNG.decode._filterZero( data, out, di, sw, sh );
var y = 0,
row = starting_row[ pass ];
var val;
while ( row < h ) {
var col = starting_col[ pass ];
var cdi = di + y * bpll << 3;
while ( col < w ) {
if ( bpp == 1 ) {
val = data[ cdi >> 3 ];
val = val >> 7 - ( cdi & 7 ) & 1;
img[ row * bpl + ( col >> 3 ) ] |= val << 7 - ( ( col & 7 ) << 0 );
}
if ( bpp == 2 ) {
val = data[ cdi >> 3 ];
val = val >> 6 - ( cdi & 7 ) & 3;
img[ row * bpl + ( col >> 2 ) ] |= val << 6 - ( ( col & 3 ) << 1 );
}
if ( bpp == 4 ) {
val = data[ cdi >> 3 ];
val = val >> 4 - ( cdi & 7 ) & 15;
img[ row * bpl + ( col >> 1 ) ] |= val << 4 - ( ( col & 1 ) << 2 );
}
if ( bpp >= 8 ) {
var ii = row * bpl + col * cbpp;
for ( var j = 0; j < cbpp; j ++ ) img[ ii + j ] = data[ ( cdi >> 3 ) + j ];
}
cdi += bpp;
col += ci;
}
y ++;
row += ri;
}
if ( sw * sh != 0 ) di += sh * ( 1 + bpll );
pass = pass + 1;
}
return img;
};
UPNG.decode._getBPP = function ( out ) {
var noc = [ 1, null, 3, 1, 2, null, 4 ][ out.ctype ];
return noc * out.depth;
};
UPNG.decode._filterZero = function ( data, out, off, w, h ) {
var bpp = UPNG.decode._getBPP( out ),
bpl = Math.ceil( w * bpp / 8 ),
paeth = UPNG.decode._paeth;
bpp = Math.ceil( bpp / 8 );
var i,
di,
type = data[ off ],
x = 0;
if ( type > 1 ) data[ off ] = [ 0, 0, 1 ][ type - 2 ];
if ( type == 3 ) for ( x = bpp; x < bpl; x ++ ) data[ x + 1 ] = data[ x + 1 ] + ( data[ x + 1 - bpp ] >>> 1 ) & 255;
for ( var y = 0; y < h; y ++ ) {
i = off + y * bpl;
di = i + y + 1;
type = data[ di - 1 ];
x = 0;
if ( type == 0 ) for ( ; x < bpl; x ++ ) data[ i + x ] = data[ di + x ]; else if ( type == 1 ) {
for ( ; x < bpp; x ++ ) data[ i + x ] = data[ di + x ];
for ( ; x < bpl; x ++ ) data[ i + x ] = data[ di + x ] + data[ i + x - bpp ];
} else if ( type == 2 ) {
for ( ; x < bpl; x ++ ) data[ i + x ] = data[ di + x ] + data[ i + x - bpl ];
} else if ( type == 3 ) {
for ( ; x < bpp; x ++ ) data[ i + x ] = data[ di + x ] + ( data[ i + x - bpl ] >>> 1 );
for ( ; x < bpl; x ++ ) data[ i + x ] = data[ di + x ] + ( data[ i + x - bpl ] + data[ i + x - bpp ] >>> 1 );
} else {
for ( ; x < bpp; x ++ ) data[ i + x ] = data[ di + x ] + paeth( 0, data[ i + x - bpl ], 0 );
for ( ; x < bpl; x ++ ) data[ i + x ] = data[ di + x ] + paeth( data[ i + x - bpp ], data[ i + x - bpl ], data[ i + x - bpp - bpl ] );
}
}
return data;
};
UPNG.decode._paeth = function ( a, b, c ) {
var p = a + b - c,
pa = p - a,
pb = p - b,
pc = p - c;
if ( pa * pa <= pb * pb && pa * pa <= pc * pc ) return a; else if ( pb * pb <= pc * pc ) return b;
return c;
};
UPNG.decode._IHDR = function ( data, offset, out ) {
var bin = UPNG._bin;
out.width = bin.readUint( data, offset );
offset += 4;
out.height = bin.readUint( data, offset );
offset += 4;
out.depth = data[ offset ];
offset ++;
out.ctype = data[ offset ];
offset ++;
out.compress = data[ offset ];
offset ++;
out.filter = data[ offset ];
offset ++;
out.interlace = data[ offset ];
offset ++;
};
UPNG._bin = {
nextZero: function ( data, p ) {
while ( data[ p ] != 0 ) p ++;
return p;
},
readUshort: function ( buff, p ) {
return buff[ p ] << 8 | buff[ p + 1 ];
},
writeUshort: function ( buff, p, n ) {
buff[ p ] = n >> 8 & 255;
buff[ p + 1 ] = n & 255;
},
readUint: function ( buff, p ) {
return buff[ p ] * ( 256 * 256 * 256 ) + ( buff[ p + 1 ] << 16 | buff[ p + 2 ] << 8 | buff[ p + 3 ] );
},
writeUint: function ( buff, p, n ) {
buff[ p ] = n >> 24 & 255;
buff[ p + 1 ] = n >> 16 & 255;
buff[ p + 2 ] = n >> 8 & 255;
buff[ p + 3 ] = n & 255;
},
readASCII: function ( buff, p, l ) {
var s = '';
for ( var i = 0; i < l; i ++ ) s += String.fromCharCode( buff[ p + i ] );
return s;
},
writeASCII: function ( data, p, s ) {
for ( var i = 0; i < s.length; i ++ ) data[ p + i ] = s.charCodeAt( i );
},
readBytes: function ( buff, p, l ) {
var arr = [];
for ( var i = 0; i < l; i ++ ) arr.push( buff[ p + i ] );
return arr;
},
pad: function ( n ) {
return n.length < 2 ? '0' + n : n;
},
readUTF8: function ( buff, p, l ) {
var s = '',
ns;
for ( var i = 0; i < l; i ++ ) s += '%' + UPNG._bin.pad( buff[ p + i ].toString( 16 ) );
try {
ns = decodeURIComponent( s );
} catch ( e ) {
return UPNG._bin.readASCII( buff, p, l );
}
return ns;
}
};
UPNG._copyTile = function ( sb, sw, sh, tb, tw, th, xoff, yoff, mode ) {
var w = Math.min( sw, tw ),
h = Math.min( sh, th );
var si = 0,
ti = 0;
for ( var y = 0; y < h; y ++ ) for ( var x = 0; x < w; x ++ ) {
if ( xoff >= 0 && yoff >= 0 ) {
si = y * sw + x << 2;
ti = ( yoff + y ) * tw + xoff + x << 2;
} else {
si = ( - yoff + y ) * sw - xoff + x << 2;
ti = y * tw + x << 2;
}
if ( mode == 0 ) {
tb[ ti ] = sb[ si ];
tb[ ti + 1 ] = sb[ si + 1 ];
tb[ ti + 2 ] = sb[ si + 2 ];
tb[ ti + 3 ] = sb[ si + 3 ];
} else if ( mode == 1 ) {
var fa = sb[ si + 3 ] * ( 1 / 255 ),
fr = sb[ si ] * fa,
fg = sb[ si + 1 ] * fa,
fb = sb[ si + 2 ] * fa;
var ba = tb[ ti + 3 ] * ( 1 / 255 ),
br = tb[ ti ] * ba,
bg = tb[ ti + 1 ] * ba,
bb = tb[ ti + 2 ] * ba;
var ifa = 1 - fa,
oa = fa + ba * ifa,
ioa = oa == 0 ? 0 : 1 / oa;
tb[ ti + 3 ] = 255 * oa;
tb[ ti + 0 ] = ( fr + br * ifa ) * ioa;
tb[ ti + 1 ] = ( fg + bg * ifa ) * ioa;
tb[ ti + 2 ] = ( fb + bb * ifa ) * ioa;
} else if ( mode == 2 ) {
// copy only differences, otherwise zero
var fa = sb[ si + 3 ],
fr = sb[ si ],
fg = sb[ si + 1 ],
fb = sb[ si + 2 ];
var ba = tb[ ti + 3 ],
br = tb[ ti ],
bg = tb[ ti + 1 ],
bb = tb[ ti + 2 ];
if ( fa == ba && fr == br && fg == bg && fb == bb ) {
tb[ ti ] = 0;
tb[ ti + 1 ] = 0;
tb[ ti + 2 ] = 0;
tb[ ti + 3 ] = 0;
} else {
tb[ ti ] = fr;
tb[ ti + 1 ] = fg;
tb[ ti + 2 ] = fb;
tb[ ti + 3 ] = fa;
}
} else if ( mode == 3 ) {
// check if can be blended
var fa = sb[ si + 3 ],
fr = sb[ si ],
fg = sb[ si + 1 ],
fb = sb[ si + 2 ];
var ba = tb[ ti + 3 ],
br = tb[ ti ],
bg = tb[ ti + 1 ],
bb = tb[ ti + 2 ];
if ( fa == ba && fr == br && fg == bg && fb == bb ) continue;
//if(fa!=255 && ba!=0) return false;
if ( fa < 220 && ba > 20 ) return false;
}
}
return true;
};
THREE.RGBMLoader = RGBMLoader;
} )();