Color所能做到的一些ps效果

Color.prototype.colorDodge = function(r,g,b){
var trans = new Object();
trans.ra=100/((258-r)/256);
trans.ga=100/((258-g)/256);
trans.ba=100/((258-b)/256);
this.setTransform(trans);
}
Color.prototype.linearDodge = function(r,g,b){
var trans = new Object();
trans.rb=r;
trans.gb=g;
trans.bb=b;
this.setTransform(trans);
}
Color.prototype.linearBurn = function(r,g,b){
var trans = new Object();
trans.rb=r-255;
trans.gb=g-255;
trans.bb=b-255;
this.setTransform(trans);
}
Color.prototype.screen = function(r,g,b){
var trans = new Object();
trans.rb=r; trans.ra=100*(255-r)/255;
trans.gb=g; trans.ga=100*(255-g)/255;
trans.bb=b; trans.ba=100*(255-b)/255;
this.setTransform(trans);
}
Color.prototype.invertRGB = function(){
this.setRGB(0xffffff-this.getRGB());
}
Color.prototype.setBrightness = function (bright) {
var percent = 100 - Math.abs(bright);
var offset = 0;
if (bright > 0) offset = 256 * (bright / 100);
var trans = new Object();
trans.ra = trans.ga = trans.ba = percent;
trans.rb = trans.gb = trans.bb = offset;
this.setTransform(trans);
}

myColor = new Color(_root.photo);
myColor.colorDodge(150,200,250);