package {
	import flash.events.Event;
	import flash.display.*;
	
	import Tunnel;
	
	public class TunnelDemo extends Sprite {
	
		[Embed(source='SomeImage.jpg')]
		public var MyPhoto:Class;
		
		private var tunnel:Tunnel;
		private var count:Number = 0.0;
		
		public function TunnelDemo():void {
			import Tunnel;
			
			var bmp:BitmapData = (new MyPhoto()).bitmapData;
			
			tunnel = new Tunnel(bmp, 600.0, 300.0);
			tunnel.x = stage.stageWidth/2;
			tunnel.y = stage.stageHeight/2;
			addChild(tunnel);
			
			addEventListener(Event.ENTER_FRAME, update);
			
			
		}
		
		private function update(e:Event):void {
			
			count += 0.03;
			var sin:Number = Math.sin(count);
			
			//	these values seems small
			//	since they're relative to 1/bitmap.width
			
			//	move forward
			tunnel.step(0.01,0.01*sin);
			
			//	bend the tunnel
			tunnel.xBending = 0.02*(sin-Math.cos(2.5*count));
			tunnel.yBending = 0.01*(Math.sin(2.5*count)+sin);
			
			tunnel.update();
			
		}
	}
}