forked from: forked from: forked from: webcam

by youpy 16 Jun 2009

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webcam
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// forked from youpy's forked from: forked from: webcam
// forked from llcheesell's webcam
package {
	import flash.display.Sprite;
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.events.*;
	import flash.media.Camera;
	import flash.media.Video;
	import flash.utils.ByteArray;
	import flash.geom.Rectangle;

	public class CameraView extends Sprite {
		private var video:Video;
		private var cameraBmp:Bitmap;
		private var cameraBmpData:BitmapData;
		private var w:int = 320;
		private var h:int = 240;
                private var time:int = 0;
                private var targetY:int = 0;
                private var line:Sprite = new Sprite();
                
		public function CameraView() {
			var camera:Camera = Camera.getCamera();

			if (camera != null) {
				video = new Video(w, h);
				video.attachCamera(camera);

				addEventListener(Event.ENTER_FRAME, tick);
			} else {
				trace("error");
			}

			cameraBmpData = new BitmapData(w, h, false, 0xaaaaaa);
			cameraBmp = new Bitmap(cameraBmpData);
			addChild(cameraBmp);
                        
                        //line.alpha = 0.2;
                        line.graphics.lineStyle(1, 0xffff00);
                        line.graphics.moveTo(0, 0);
                        line.graphics.lineTo(w, 0);
                        line.graphics.endFill();
                        addChild(line);
     
		}
		
		private function tick(event:Event):void {
                        time ++;
                        
      			if(video == null) {
				return;
			}

                        targetY = Math.abs(Math.sin((time % h) / h * 2 * Math.PI) * h)
                        line.y = targetY;
                        
                    	var lines:Array = [];
			var y_pixels:Array = [];
			var x:int, y:int;

			cameraBmpData.draw(video);

			for(x = 0; x < w; x ++) {
				y_pixels = [];
				
				for(y = 0; y < h; y ++) {
					y_pixels.push(cameraBmpData.getPixel(x, y));
				}

				lines.push(y_pixels); 
			}

			lines = lines.sort(sortOnFirstItem);

			for(x = 0; x < w; x ++) {
				for(y = 0; y < h; y ++) {
					cameraBmpData.setPixel(x, y, lines[x][y]);
				}
			}
		}

		private function sortOnFirstItem(aArray:Array, bArray:Array):Number {
    			var y:int = (targetY >= h) ? (h - 1) : targetY;
			var a:int = aArray[y];
			var b:int = bArray[y];

			if(a > b) {
				return 1;
			} else if(a < b) {
				return -1;
			} else  {
				return 0;
			}
		}

	}
}