flash on 2013-1-11

/**
 * Copyright lizhi ( http://wonderfl.net/user/lizhi )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/bqsg
 */

package  
{
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.Shape;
	import flash.display.Sprite;
	/**
	 * ...
	 * @author lizhi http://game-develop.net/
	 */
	public class TestC extends Sprite
	{
		
		public function TestC() 
		{
			//http://research.microsoft.com/en-us/um/people/cloop/loopblinn05.pdf
			var bmd:BitmapData = new BitmapData(400, 400, false, 0);
			for (var x:int = 0; x < bmd.width; x++ ) {
				for (var y:int = 0; y < bmd.height; y++ ) {
					var u:Number = x / (bmd.width / 2 + bmd.width / 2 * y / bmd.height) / (2 - y / bmd.height);
					var v:Number = y / bmd.height;
					var d:Number = u * u - v;
					bmd.setPixel(x, y, 0xff * d);
					if (d < (.7/bmd.width) && d > -(.7/bmd.height)) {
						bmd.setPixel(x, y, 0xffff);
					}else {
						bmd.setPixel(x, y, 0);
					}
				}
			}
			addChild(new Bitmap(bmd));
		}
		
	}

}