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TextureGenerator.js
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TextureGenerator.js
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/*
Chromanin
Based on public domain pascal code of Texture v.0.5 (C)2K2 by CARSTEN WAECHTER http://ainc.de
JavaScript version Copyright (C) 2012 Alejandro Mosquera <amsqr2@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 3 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
function Chromanin(texsize,strcanvas)
{
this.MAX_LAYERS=5;
this.TEMPL =5;
this.layerSizeX=texsize;
this.layerSizeY=texsize;
this.andLayerSizeX=texsize-1;
this.andLayerSizeY=texsize-1;
this.layers = []; // array de canvas
this.imageData=null;
this.seedValue=0;
this.outcanvas = strcanvas;
}
function RGBA()
{
this.r=0;
this.g=0;
this.b=0;
this.a=255;
};
Chromanin.prototype.setPixel= function setPixel(x, r, g, b, a) {
index = (x);
this.imageData.data[index+0] = r;
this.imageData.data[index+1] = g;
this.imageData.data[index+2] = b;
this.imageData.data[index+3] = a;
}
Chromanin.prototype.writeCanvas= function writeCanvas()
{
var skel = "ch_canvas_tmp";
for (var i=0; i<this.MAX_LAYERS+1; i++)
{
ref = null;
if (i==4)
{
ref = document.getElementById(this.outcanvas);
/*}
else
{
ref = document.getElementById(skel+i);
//alert(skel+i);
}
*/
ctx = ref.getContext('2d');
this.imageData = ctx.createImageData(this.layerSizeX, this.layerSizeY);
//alert(i);
for (var x=0; x<(this.layerSizeX * this.layerSizeY); x+=1)
{
index=4*x;
this.imageData.data[index] = Math.round(this.layers[i][x].r);
this.imageData.data[index+1] = Math.round(this.layers[i][x].g);
this.imageData.data[index+2] = Math.round(this.layers[i][x].b);
this.imageData.data[index+3] = Math.round(this.layers[i][x].a)
//setPixel(x, Math.round(this.layers[i][x].r),Math.round(this.layers[i][x].g),Math.round(this.layers[i][x].b),Math.round(this.layers[i][x].a));
}
ctx.putImageData(this.imageData, 0, 0);
}
}
}
Chromanin.prototype.CreateTexture= function CreateTexture()
{
}
Chromanin.prototype.initlayers= function initlayers(sizeX, sizeY)
{
/*
for (var i=0; i<this.MAX_LAYERS+1; i++)
{
var skel = "ch_canvas_tmp";
ref = document.createElement('canvas');
ref.id = skel+i;
ref.width = sizeX;
ref.height =sizeY;
document.body.appendChild(ref);
ref = document.getElementById(skel+i);
//alert(ref);
}
*/
for (var i=0; i<this.MAX_LAYERS+1; i++)
{
this.layers[i]=[];
for (var x=0; x<(sizeX * sizeY); x+=1)
{
this.layers[i][x] = new RGBA();
}
}
this.layerSizeX=sizeX;
this.layerSizeY=sizeY;
this.andLayerSizeX=sizeX-1;
this.andLayerSizeY=sizeY-1;
}
Chromanin.prototype.deInitLayers= function deInitLayers()
{
}
Chromanin.prototype.getLayer= function getLayer(l)
{
return this.layers[l];
}
function myRandom()
{
this.seedValue = (this.seedValue * 22695477 + 1) & 0xffffff;
return (this.seedValue >> 16) & 0x7fff;
//return Math.floor(Math.random()*301);
}
function cosineInterpolate(v, x, y)
{
var f1, f2, mf1, mf2, g0, g1, g2, g3;
color= new RGBA();
mf1=(1-Math.cos(x*Math.PI))*0.5;
mf2=(1-Math.cos(y*Math.PI))*0.5;
f1=1-mf1;
f2=1-mf2;
g0=f1*f2;
g1=mf1*f2;
g2=f1*mf2;
g3=mf1*mf2;
color.r=(v[0].r*g0+v[1].r*g1+v[2].r*g2+v[3].r*g3);
color.g=(v[0].g*g0+v[1].g*g1+v[2].g*g2+v[3].g*g3);
color.b=(v[0].b*g0+v[1].b*g1+v[2].b*g2+v[3].b*g3);
return color;
}
function mySqrtInt(n)
{
var root, tryr;
if (n>=65025) // 255*255
return 255;
root=0;
for (var i=15; i>=0; i--)
{
tryr=root+(1<<i);
if (n>(tryr<<i))
{
n-=tryr<<i;
root=root|(2<<i);
}
}
return root>>1;
}
function fmod(a, b)
{
var x = Math.floor(a/b);
return a - b*x;
}
function hsv2rgb( h, s, v, r, g, b)
{
var f, p, q, t;
var i;
while (h<0) h+=360;
while (h>=360) h-=360;
if (s==0)
{
r=v;
g=v;
b=v;
}
else {
h/=60;
i=getlo(h);
f=fmod(h, 1);
f=(h-i);
p=v*(1-s);
q=v*(1-(s*f));
t=v*(1-(s*(1-f)));
switch(i)
{
case 0: r=v; g=t; b=p; break;
case 1: r=q; g=v; b=p; break;
case 2: r=p; g=v; b=t; break;
case 3: r=p; g=q; b=v; break;
case 4: r=t; g=p; b=v; break;
case 5: r=v; g=p; b=q; break;
}
}
}
function rgb2hsv(r, g, b, h, s, v)
{
var maxR, maxG, maxB, delta;
var mx=Math.max(r, Math.max(g, b));
var mn=Math.min(r, Math.min(g, b));
v=mx;
s=0;
if (mx!=0)
s=(mx-mn)/mx;
if (s==0)
h=-1;
else {
delta=mx-mn;
maxR=mx-r;
maxG=mx-g;
maxB=mx-b;
if (r==mx)
h=(maxB-maxG)/delta;
else
if (g==mx)
h=2+(maxR-maxB)/delta;
else
h=4+(maxG-maxR)/delta;
h*=60;
while (h<0) h+=360;
while (h>=360) h-=360;
}
}
Chromanin.prototype.getBilerpixel= function getBilerpixel(l, x, y)
{
var corner = [];
corner[0] =new RGBA();
corner[1] =new RGBA();
corner[2] =new RGBA();
corner[3] =new RGBA();
var xi, yi, xip, xip1;
var yip, yip1;
xi=x;
yi=y;
xip=xi&this.andLayerSizeX;
xip1=(xi+1)&this.andLayerSizeX;
yip1=((yi+1)&this.andLayerSizeY)*this.layerSizeX;
yip=(yi&this.andLayerSizeY)*this.layerSizeX;
corner[0]=this.layers[l][xip+yip];
corner[1]=this.layers[l][xip1+yip];
corner[2]=this.layers[l][xip+yip1];
corner[3]=this.layers[l][xip1+yip1];
return cosineInterpolate(corner, (x-xi), (y-yi));
}
Chromanin.prototype.subPlasma= function subPlasma(l, dist, seed, amplitude, rgb)
{
var x, y;
var offset, offset2;
var corner = [];
corner[0] =new RGBA();
corner[1] =new RGBA();
corner[2] =new RGBA();
corner[3] =new RGBA();
var oodist;
if (seed!=0)
this.seedValue=seed;
for (y=0; y<this.layerSizeY; y+=dist)
for (x=0; x<this.layerSizeX; x+=dist)
{
offset=y*this.layerSizeX+x;
this.layers[l][offset].r=this.layers[l][offset].g=this.layers[l][offset].b=getlo(myRandom())&(amplitude-1);
if (rgb)
{
this.layers[l][offset].g=getlo(myRandom())&(amplitude-1);
this.layers[l][offset].b=getlo(myRandom())&(amplitude-1);
}
}
if (dist<1)
return;
oodist=1/dist;
for (y=0; y<this.layerSizeY; y+=dist)
{
offset=y*this.layerSizeX;
offset2=((y+dist)&this.andLayerSizeY)*this.layerSizeX;
for (x=0; x<this.layerSizeX; x+=dist)
{
corner[0]=this.layers[l][x+offset];
corner[1]=this.layers[l][((x+dist)&this.andLayerSizeX)+offset];
corner[2]=this.layers[l][x+offset2];
corner[3]=this.layers[l][((x+dist)&this.andLayerSizeX)+offset2];
for (var b=0; b<dist; b++)
for (var a=0; a<dist; a++)
this.layers[l][x+a+(y+b)*this.layerSizeX]=cosineInterpolate(corner, oodist*a, oodist*b);
}
}
}
Chromanin.prototype.sinePlasma= function sinePlasma(l, dx, dy, amplitude)
{
amplitude/=256;
for (var y=0; y<this.layerSizeY; y++)
for (var x=0; x<this.layerSizeX; x++)
this.layers[l][x+y*this.layerSizeX].r=this.layers[l][x+y*this.layerSizeX].g=this.layers[l][x+y*this.layerSizeX].b=((63.5*Math.sin(dx*x)+127+63.5*Math.sin(dy*y))*amplitude);
}
Chromanin.prototype.perlinNoise= function perlinNoise( l, dist, seed, amplitude, persistence, octaves, rgb)
{
var r;
this.subPlasma(l, dist, seed, 1, rgb);
for ( var i=0; i<octaves-2; i++)
{
amplitude=(amplitude*persistence)>>8;
if (amplitude<=0) break;
dist=dist>>1;
if (dist<=0) break;
this.subPlasma(this.TEMPL, dist, 0, amplitude, rgb);
for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
r=this.layers[l][v].r+this.layers[this.TEMPL][v].r;
if (r>255)
this.layers[l][v].r=255;
else
this.layers[l][v].r=r;
r=this.layers[l][v].g+this.layers[this.TEMPL][v].g;
if (r>255)
this.layers[l][v].g=255;
else
this.layers[l][v].g=r;
r=this.layers[l][v].b+this.layers[this.TEMPL][v].b;
if (r>255)
this.layers[l][v].b=255;
else
this.layers[l][v].b=r;
}
}
}
Chromanin.prototype.particle= function particle( l, f)
{
var r, nx, ny;
var offset;
f*=180;
for (var y=0; y<this.layerSizeY; y++)
{
ny=y/(this.layerSizeY>>1)-1;
for (var x=0; x<this.layerSizeX; x++)
{
offset=y*this.layerSizeX+x;
nx=x/(this.layerSizeX>>1)-1;
r=255-f*Math.sqrt(nx*nx+ny*ny);
if (r<0) r=0;
if (r>255) r=255;
this.layers[l][offset].r=this.layers[l][offset].g=this.layers[l][offset].b=(r);
}
}
}
Chromanin.prototype.colorLayer= function colorLayer( l, r, g, b)
{
var color= new RGBA();
color.r=r; color.g=g; color.b=b;
for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)
this.layers[l][v]=color;
}
Chromanin.prototype.checkerBoardLayer= function checkerBoardLayer( l, dx, dy, r1, g1, b1, r2, g2, b2)
{
var col1=new RGBA();
var col2=new RGBA();
col1.r=r1; col1.g=g1; col1.b=b1;
col2.r=r2; col2.g=g2; col2.b=b2;
for (var y=0; y<this.layerSizeY; y++)
for (var x=0; x<this.layerSizeX; x++)
if (((y/dy)&1)^((x/dx)&1))
this.layers[l][y*this.layerSizeX+x]=col1;
else
this.layers[l][y*this.layerSizeX+x]=col2;
}
Chromanin.prototype.blobsLayer= function blobsLayer( l, seed, amount, rgb)
{
var blobX =new Array(16);
var blobY =new Array(16);
var blobR=new Array(16);
var blobG =new Array(16);
var blobB=new Array(16);
var r, g, b, sd, d, oosize;
var rx, ry;
var offset;
this.seedValue=seed;
for ( v=0; v<amount; v++)
{
blobX[v]=getlo(getlo(myRandom())&this.andLayerSizeX);
blobY[v]=getlo(getlo(myRandom())&this.andLayerSizeY);
blobR[v]=(getlo(myRandom()&255)/255+0.1)*150;
if (rgb==true)
{
blobG[v]=getlo((getlo(getlo(myRandom())&255)/255+0.1)*150);
blobB[v]=getlo((getlo(getlo(myRandom())&255)/255+0.1)*150);
}
}
oosize=3/(this.layerSizeX*this.layerSizeY);
for (var y=0; y<this.layerSizeY; y++)
for (var x=0; x<this.layerSizeX; x++)
{
offset=y*this.layerSizeX+x;
r=g=b=0;
for (v=0; v<amount; v++)
{
rx=blobX[v]-x;
ry=blobY[v]-y;
d=oosize*(rx*rx+ry*ry);
sd=d*d;
d=-0.444444*sd*d+1.888888*sd-2.444444*d+1;
r+=d*blobR[v];
g+=d*blobG[v]; // needn't be calculated if not rgb, but we do it for memory optimization (spares one if statement)
b+=d*blobB[v]; // needn't be calculated if not rgb, but we do it for memory optimization (spares one if statement)
}
if (r<0) r=0;
if (r>255) r=255;
this.layers[l][offset].r=this.layers[l][offset].g=this.layers[l][offset].b=getlo(r);
if (rgb)
{
if (g<0) g=0;
if (g>255) g=255;
this.layers[l][offset].g=getlo(g);
if (b<0) b=0;
if (b>255) b=255;
this.layers[l][offset].b=getlo(b);
}
}
}
Chromanin.prototype.scaleLayerRGB= function scaleLayerRGB( src, dest, r, g, b)
{
var tr, tg, tb;
for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
tr=this.layers[src][v].r*r;
tg=this.layers[src][v].g*g;
tb=this.layers[src][v].b*b;
if (tr>=255) this.layers[dest][v].r=255; else if (tr<=0) this.layers[dest][v].r=0; else this.layers[dest][v].r=tr;
if (tg>=255) this.layers[dest][v].g=255; else if (tg<=0) this.layers[dest][v].g=0; else this.layers[dest][v].g=tg;
if (tb>=255) this.layers[dest][v].b=255; else if (tb<=0) this.layers[dest][v].b=0; else this.layers[dest][v].b=tb;
}
}
Chromanin.prototype.scaleLayerHSV= function scaleLayerHSV( src, dest, h, s, v)
{
var th, ts, tv, tr, tg, tb;
for (var k=0; k<this.layerSizeX*this.layerSizeY; k++)
{
rgb2hsv(this.layers[src][k].r, this.layers[src][k].g, this.layers[src][k].b, th, ts, tv);
th*=h;
ts*=s;
tv*=v;
if (ts>1) ts=1; else if (ts<0) ts=0;
if (tv>255) tv=255; else if (tv<0) tv=0;
hsv2rgb(th, ts, tv, tr, tg, tb);
this.layers[dest][k].r=getlo(tr);
this.layers[dest][k].g=getlo(tg);
this.layers[dest][k].b=getlo(tb);
}
}
Chromanin.prototype.adjustLayerRGB= function adjustLayerRGB( src, dest, r, g, b)
{
var tr, tg, tb;
for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
tr=this.layers[src][v].r+r;
tg=this.layers[src][v].g+g;
tb=this.layers[src][v].b+b;
if (tr>=255) this.layers[dest][v].r=255; else if (tr<=0) this.layers[dest][v].r=0; else this.layers[dest][v].r=tr;
if (tg>=255) this.layers[dest][v].g=255; else if (tg<=0) this.layers[dest][v].g=0; else this.layers[dest][v].g=tg;
if (tb>=255) this.layers[dest][v].b=255; else if (tb<=0) this.layers[dest][v].b=0; else this.layers[dest][v].b=tb;
}
}
Chromanin.prototype.adjustLayerHSV= function adjustLayerHSV( src, dest, h, s, v)
{
var th, ts, tv, tr, tg, tb;
for ( k=0; k<this.layerSizeX*this.layerSizeY; k++)
{
rgb2hsv(this.layers[src][k].r, this.layers[src][k].g, this.layers[src][k].b, th, ts, tv);
th+=h;
ts+=s;
tv+=v;
if (ts>1) ts=1; else if (ts<0) ts=0;
if (tv>255) tv=255; else if (tv<0) tv=0;
hsv2rgb(th, ts, tv, tr, tg, tb);
this.layers[dest][k].r=getlo(tr);
this.layers[dest][k].g=getlo(tg);
this.layers[dest][k].b=getlo(tb);
}
}
Chromanin.prototype.sineLayerRGB= function sineLayerRGB( src, dest, r, g, b)
{
r*=Math.PI;
g*=Math.PI;
b*=Math.PI;
for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
this.layers[dest][v].r=(127.5*(Math.sin(r*this.layers[src][v].r)+1));
this.layers[dest][v].g=(127.5*(Math.sin(g*this.layers[src][v].g)+1));
this.layers[dest][v].b=(127.5*(Math.sin(b*this.layers[src][v].b)+1));
}
}
Chromanin.prototype.equalizeRGB= function equalizeRGB( src, dest)
{
var histogramR=new Array(256);
var histogramG=new Array(256);
var histogramB=new Array(256);
var sumR, sumG, sumB, pDiv;
//memset(histogramR, 0, sizeof()*256);
//memset(histogramG, 0, sizeof()*256);
//memset(histogramB, 0, sizeof()*256);
for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
histogramR[this.layers[src][v].r]++;
histogramG[this.layers[src][v].g]++;
histogramB[this.layers[src][v].b]++;
}
sumR=sumG=sumB=0;
pDiv=255/(this.layerSizeX*this.layerSizeY);
for (v=0; v<256; v++) // v is already defined by for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)!!!
{
sumR+=histogramR[v]*pDiv;
histogramR[v]=sumR;
sumG+=histogramG[v]*pDiv;
histogramG[v]=sumG;
sumB+=histogramB[v]*pDiv;
histogramB[v]=sumB;
}
for (v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
this.layers[dest][v].r=histogramR[this.layers[src][v].r];
this.layers[dest][v].g=histogramG[this.layers[src][v].g];
this.layers[dest][v].b=histogramB[this.layers[src][v].b];
}
}
Chromanin.prototype.stretchRGB= function stretchRGB( src, dest)
{
var histogramR=new Array(256);
var histogramG=new Array(256);
var histogramB=new Array(256);
var sumR, sumG, sumB, pDivR, pDivG, pDivB;
var minR, minG, minB, maxR, maxG, maxB;
//memset(histogramR, 0, sizeof()*256);
//memset(histogramG, 0, sizeof()*256);
//memset(histogramB, 0, sizeof()*256);
for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
histogramR[this.layers[src][v].r]++;
histogramG[this.layers[src][v].g]++;
histogramB[this.layers[src][v].b]++;
}
minR=minG=minB=-1;
maxR=maxG=maxB=0;
for (v=0; v<256; v++)
{
if (histogramR[v]!=0){maxR=v; if(minR==-1)minR=v;}
if (histogramG[v]!=0){maxG=v; if(minG==-1)minG=v;}
if (histogramB[v]!=0){maxB=v; if(minB==-1)minB=v;}
}
sumR=minR; sumG=minG; sumB=minB;
pDivR=(maxR-minR)/(this.layerSizeX*this.layerSizeY);
pDivG=(maxG-minG)/(this.layerSizeX*this.layerSizeY);
pDivB=(maxB-minB)/(this.layerSizeX*this.layerSizeY);
for (v=0; v<256; v++) // v is already defined by for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)!!!
{
sumR+=histogramR[v]*pDivR;
histogramR[v]=sumR;
sumG+=histogramG[v]*pDivG;
histogramG[v]=sumG;
sumB+=histogramB[v]*pDivB;
histogramB[v]=sumB;
}
for (v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
this.layers[dest][v].r=histogramR[this.layers[src][v].r];
this.layers[dest][v].g=histogramG[this.layers[src][v].g];
this.layers[dest][v].b=histogramB[this.layers[src][v].b];
}
}
Chromanin.prototype.invertLayer= function invertLayer( src, dest)
{
for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
this.layers[dest][v].r=255-this.layers[src][v].r;//~this.layers[src][v].r;
this.layers[dest][v].g=255-this.layers[src][v].g;//~this.layers[src][v].g;
this.layers[dest][v].b=255-this.layers[src][v].b;//~this.layers[src][v].b;
//this.layers[dest][v].a=~this.layers[src][v].a;
}
}
Chromanin.prototype.matrixLayer= function matrixLayer( src, dest, myabs, matrix)
{
var r, g, b;
var offset;
this.copyTemp(src);
for (var y=0; y<this.layerSizeY; y++)
for (var x=0; x<this.layerSizeX; x++)
{
r=g=b=0;
for (var my=0; my<3; my++)
for (var mx=0; mx<3; mx++)
{
offset=((x-1+mx)&this.andLayerSizeX)+((y-1+my)&this.andLayerSizeY)*this.layerSizeX;
r+=matrix[mx][my]*this.layers[this.TEMPL][offset].r;
g+=matrix[mx][my]*this.layers[this.TEMPL][offset].g;
b+=matrix[mx][my]*this.layers[this.TEMPL][offset].b;
}
if (myabs==true)
{
r=Math.abs(r);
g=Math.abs(g);
b=Math.abs(b);
}
if (r<0) r=0; else if (r>255) r=255;
if (g<0) g=0; else if (g>255) g=255;
if (b<0) b=0; else if (b>255) b=255;
this.layers[dest][x+y*this.layerSizeX].r=r;
this.layers[dest][x+y*this.layerSizeX].g=g;
this.layers[dest][x+y*this.layerSizeX].b=b;
}
}
Chromanin.prototype.embossLayer= function embossLayer( src, dest)
{
var r1, g1, b1, r2, g2, b2;
var offset, offsetxm1, offsetxp1, offsetym1, offsetyp1;
this.copyTemp(src);
for (var y=0; y<this.layerSizeY; y++)
{
offsetym1=(getlo(y-1)&this.andLayerSizeY)*this.layerSizeX;
offset=y*this.layerSizeX;
offsetyp1=(getlo(y+1)&this.andLayerSizeY)*this.layerSizeX;
for (var x=0; x<this.layerSizeX; x++)
{
offsetxm1=(getlo(x-1)&this.andLayerSizeX);
offsetxp1=(getlo(x+1)&this.andLayerSizeX);
r1=128
-this.layers[this.TEMPL][offsetxm1+offsetym1].r
-this.layers[this.TEMPL][offsetxm1+offset].r
-this.layers[this.TEMPL][offsetxm1+offsetyp1].r
+this.layers[this.TEMPL][offsetxp1+offsetym1].r
+this.layers[this.TEMPL][offsetxp1+offset].r
+this.layers[this.TEMPL][offsetxp1+offsetyp1].r;
g1=128
-this.layers[this.TEMPL][offsetxm1+offsetym1].g
-this.layers[this.TEMPL][offsetxm1+offset].g
-this.layers[this.TEMPL][offsetxm1+offsetyp1].g
+this.layers[this.TEMPL][offsetxp1+offsetym1].g
+this.layers[this.TEMPL][offsetxp1+offset].g
+this.layers[this.TEMPL][offsetxp1+offsetyp1].g;
b1=128
-this.layers[this.TEMPL][offsetxm1+offsetym1].b
-this.layers[this.TEMPL][offsetxm1+offset].b
-this.layers[this.TEMPL][offsetxm1+offsetyp1].b
+this.layers[this.TEMPL][offsetxp1+offsetym1].b
+this.layers[this.TEMPL][offsetxp1+offset].b
+this.layers[this.TEMPL][offsetxp1+offsetyp1].b;
r2=128
-this.layers[this.TEMPL][offsetym1+offsetxm1].r
-this.layers[this.TEMPL][offsetym1+x].r
-this.layers[this.TEMPL][offsetym1+offsetxp1].r
+this.layers[this.TEMPL][offsetyp1+offsetxm1].r
+this.layers[this.TEMPL][offsetyp1+x].r
+this.layers[this.TEMPL][offsetyp1+offsetxp1].r;
g2=128
-this.layers[this.TEMPL][offsetym1+offsetxm1].g
-this.layers[this.TEMPL][offsetym1+x].g
-this.layers[this.TEMPL][offsetym1+offsetxp1].g
+this.layers[this.TEMPL][offsetyp1+offsetxm1].g
+this.layers[this.TEMPL][offsetyp1+x].g
+this.layers[this.TEMPL][offsetyp1+offsetxp1].g;
b2=128
-this.layers[this.TEMPL][offsetym1+offsetxm1].b
-this.layers[this.TEMPL][offsetym1+x].b
-this.layers[this.TEMPL][offsetym1+offsetxp1].b
+this.layers[this.TEMPL][offsetyp1+offsetxm1].b
+this.layers[this.TEMPL][offsetyp1+x].b
+this.layers[this.TEMPL][offsetyp1+offsetxp1].b;
r1=Math.sqrt((r1*r1+r2*r2));
g1=Math.sqrt((g1*g1+g2*g2));
b1=Math.sqrt((b1*b1+b2*b2));
if (r1>255) r1=255;
if (g1>255) g1=255;
if (b1>255) b1=255;
this.layers[dest][x+offset].r=r1;
this.layers[dest][x+offset].g=g1;
this.layers[dest][x+offset].b=b1;
}
}
}
// table used for shift operations
powtab = [ 1, 2, 4, 8, 16, 32, 64, 128, 256, 512];
function mylshift(a,shift){
// logical shift left
if (shift > 7) {
a = 0; // if shifting more than 15 bits to the left, value is always zero
} else {
a *= powtab[shift];
}
return a;
}
function myrshift(a,shift){
// logical shift right (unsigned)
if (shift > 7) {
a = 0; // more than 15, becomes zero
} else {//if (shift > 0) {
//if (a < 0) {
// deal with the sign bit (15)
// a += -32768;
// a /= powtab[shift];
// a += powtab[15 - shift];
//} else {
a /= powtab[shift];
//}
}
return a;
}
function myor(a,b)
{
// OR (|)
c = 0;
for (x = 0; x <= 7; ++x) {
c += c;
if (a < 0) {
c += 1;
} else if (b < 0) {
c += 1;
}
a += a;
b += b;
}
return c;
}
function gethi(i)
{
lo = i % 256;
hi = (i-lo)/256;
return hi;
}
function getlo(i)
{
return i % 256;
}
Chromanin.prototype.woodLayer= function woodLayer( src, dest, b)
{
var bm8=8-b;
for (var v=0; v<this.layerSizeX*this.layerSizeY; v++)
{
//this.layers[dest][v].r=(this.layers[src][v].r<<b)|(this.layers[src][v].r>>bm8);
//this.layers[dest][v].g=(this.layers[src][v].g<<b)|(this.layers[src][v].g>>bm8);
//this.layers[dest][v].b=(this.layers[src][v].b<<b)|(this.layers[src][v].b>>bm8);
this.layers[dest][v].r=getlo((mylshift(this.layers[src][v].r,b))|(myrshift(this.layers[src][v].r,bm8)));
this.layers[dest][v].g=getlo((mylshift(this.layers[src][v].g,b))|(myrshift(this.layers[src][v].g,bm8)));
this.layers[dest][v].b=getlo((mylshift(this.layers[src][v].b,b))|(myrshift(this.layers[src][v].b,bm8)));
}
}
Chromanin.prototype.blurLayer= function blurLayer( src, dest)
{
var matrix=new Array(3);
matrix[0]=new Array(3);
matrix[1]=new Array(3);
matrix[2]=new Array(3);
matrix[0][0]=0.0625; matrix[1][0]=0.125; matrix[2][0]=0.0625;
matrix[0][1]=0.125; matrix[1][1]=0.25; matrix[2][1]=0.125;
matrix[0][2]=0.0625; matrix[1][2]=0.125; matrix[2][2]=0.0625;
this.matrixLayer(src, dest, false, matrix);
}
Chromanin.prototype.edgeHLayer= function edgeHLayer( src, dest)
{
var matrix=new Array(3);
matrix[0]=new Array(3);
matrix[1]=new Array(3);
matrix[2]=new Array(3);
matrix[0][0]=2; matrix[1][0]=4; matrix[2][0]=2;
matrix[0][1]=0; matrix[1][1]=0; matrix[2][1]=0;
matrix[0][2]=-2; matrix[1][2]=-4; matrix[2][2]=-2;
this.matrixLayer(src, dest, true, matrix);
}
Chromanin.prototype.edgeVLayer= function edgeVLayer( src, dest)
{
var matrix=new Array(3);
matrix[0]=new Array(3);
matrix[1]=new Array(3);
matrix[2]=new Array(3);
matrix[0][0]=2; matrix[1][0]=0; matrix[2][0]=-2;
matrix[0][1]=4; matrix[1][1]=0; matrix[2][1]=-4;
matrix[0][2]=2; matrix[1][2]=0; matrix[2][2]=-2;
this.matrixLayer(src, dest, true, matrix);
}
Chromanin.prototype.sharpenLayer= function sharpenLayer( src, dest)
{
var matrix=new Array(3);
matrix[0]=new Array(3);
matrix[1]=new Array(3);
matrix[2]=new Array(3);
matrix[0][0]=-0.125; matrix[1][0]=-0.25; matrix[2][0]=-0.125;
matrix[0][1]=-0.25; matrix[1][1]=2.5; matrix[2][1]=-0.25;
matrix[0][2]=-0.125; matrix[1][2]=-0.25; matrix[2][2]=-0.125;
this.matrixLayer(src, dest, false, matrix);
}
Chromanin.prototype.motionBlur= function motionBlur( src, dest, s)
{
var sq, ts, r, g, b, offset, offset2;
this.copyTemp(src);
sq=(s+1)*(s+1);
for (var y=0; y<this.layerSizeY; y++)
{
offset=y*this.layerSizeX;
for (var x=0; x<this.layerSizeX; x++)
{
r=g=b=0;
for ( t=-s; t<=s; t++)
{
offset2=offset+(getlo(x+t)&this.andLayerSizeX);
ts=(s+1-Math.abs(t));
r+=this.layers[this.TEMPL][offset2].r*ts;
g+=this.layers[this.TEMPL][offset2].g*ts;
b+=this.layers[this.TEMPL][offset2].b*ts;
}
this.layers[dest][offset+x].r=(r/sq);
this.layers[dest][offset+x].g=(g/sq);
this.layers[dest][offset+x].b=(b/sq);
}
}
}
Chromanin.prototype.makeTilable= function makeTilable( src, dest, s)
{
var offset, offset2, sx, sy;
var sq, sr, sd, srm;
this.copyTemp(src);
s=this.layerSizeX/2-s;
sq=(s*s);
sd=(this.layerSizeX/2)*(this.layerSizeY/2)-sq;
if (sd!=0)
{
sd=0.75/sd;
}
else
{
sd=75000;
}
for (var y=0; y<this.layerSizeY; y++)
{
offset=y*this.layerSizeX;
offset2=(this.layerSizeY-1-y)*this.layerSizeX;
sy=y-this.layerSizeY/2;
sy*=sy;
for (var x=0; x<this.layerSizeX; x++)
{
sx=x-this.layerSizeX/2;
sr=sx*sx+sy-sq;
if (sr>0)
{
sr*=sd;