var canvasY = posy-obj.offsetTop;
explode(canvasX, canvasY);
}
function Tile(){
this.originX = 0;
this.originY = 0;
this.currentX = 0;
this.currentY = 0;
this.rotation = 0;
this.force = 0;
this.z = 0;
this.moveX= 0;
this.moveY= 0;
this.moveRotation = 0;
this.videoX = 0;
this.videoY = 0;
}
/*
getPixel
return pixel object {r,g,b,a}
*/
function getPixel(imageData, x, y){
var data = imageData.data;
var pos = (x + y * imageData.width) * 4;
return {r:data[pos], g:data[pos+1], b:data[pos+2], a:data[pos+3]}
}
/*
setPixel
set pixel object {r,g,b,a}
*/
function setPixel(imageData, x, y, pixel){
var data = imageData.data;
var pos = (x + y * imageData.width) * 4;
data[pos] = pixel.r;
data[pos+1] = pixel.g;
data[pos+2] = pixel.b;
data[pos+3] = pixel.a;
}
/*
copyPixel
faster then using getPixel/setPixel combo
*/
function copyPixel(sImageData, sx, sy, dImageData, dx, dy){
var spos = (sx + sy * sImageData.width) * 4;
var dpos = (dx + dy * dImageData.width) * 4;
dImageData.data[dpos] = sImageData.data[spos]; //R
dImageData.data[dpos+1] = sImageData.data[spos+1]; //G
dImageData.data[dpos+2] = sImageData.data[spos+2]; //B
dImageData.data[dpos+3] = sImageData.data[spos+3]; //A
}
</script>
