package com.aberustudios.afrosuit.visual
{
	import flash.display.BitmapData;
	import flash.display.GradientType;
	import flash.display.Graphics;
	import flash.display.Sprite;
	import flash.geom.Matrix;
	
	import net.flashpunk.FP;
	
	public class Gradient extends BitmapData
	{
		public function Gradient(width:int, height:int, colorA:uint = 0xFFFFFF, colorB:uint = 0x000000, angle:Number = 90)
		{
			super(width, height, true, 0x00000000);
			
			m.createGradientBox(width, height, angle * (-FP.RAD));
			g.beginGradientFill(GradientType.LINEAR, [colorA, colorB], [1, 1], [0, 255], m);
			g.drawRect(0, 0, width, height);
			
			draw(s);
		}
		
		public function updateGradient(colorA:uint = 0xFFFFFF, colorB:uint = 0x000000):void
		{
			g.clear();
			g.beginGradientFill(GradientType.LINEAR, [colorA, colorB], [1, 1], [0, 255], m);
			g.drawRect(0, 0, width, height);
			
			draw(s);
		}
		
		private var s:Sprite = new Sprite;
		private var g:Graphics = s.graphics;
		private var m:Matrix = new Matrix;
	}
}