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function Color (opt) {
if (opt.length == 3) {
this.r = opt[0];
this.g = opt[1];
this.b = opt[2];
this.a = 1;
}
else if (opt.length == 4) {
this.r = opt[0];
this.g = opt[1];
this.b = opt[2];
this.a = opt[3];
}
}
Color.prototype.toString = function(){
return "rgba(" + this.r + "," + this.g + "," + this.b + "," + this.a + ")";
}
Color.prototype.rgb = function(){
return [ this.r, this.g, this.b ];
}
Color.prototype.rgba = function(){
return [ this.r, this.g, this.b, this.a ];
}
Color.prototype.hsl = function(){
}
Color.prototype.copy = function(){
return new Color( this.rgba() );
}
Color.prototype.alpha = function(a){
var c = this.copy()
c.a = a;
return c;
}
var colors = {
red: new Color([ 255,0,0 ]),
blue: new Color([ 0,0,255 ]),
black: new Color([ 0,0,0 ]),
green: new Color([ 0,128,0 ]),
cyan: new Color([ 0,255,255 ]),
yellow: new Color([ 255,255,0 ]),
peru: new Color([ 205,133,63 ]),
}
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