Forked from:: mash's wonderFl_KeyVisual_v3 with explanation

forked from: wonderFl_KeyVisual_v3 with explanation

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license : All rights reserved
modified : 2008-12-25 19:05:51

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package
{
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.MouseEvent;
	
	public class PathDrop extends Sprite
	{	
		protected var ballColor:Number = 0xFFFFFF;
		protected var ballSize:Number = 10;
		protected var gain:Number = .02;
		protected var spkratio:Number = 0.3;
		protected var bg:Sprite= new Sprite();
		protected var container:Sprite= new Sprite();
		protected var count:Number = 0;

protected var xLength:int = 20;
		protected var yLength:int = xLength;
		
		protected var margin:int = 2;
		protected var radian:Number = 0;
		protected var ballScope:Array = new Array();
		
		protected var bmpsnc:BmpSnatch;
		
		public function PathDrop()
		{
			init();
		}
		
		public function init():void
		{

bg.width = stage.stageWidth;
			bg.height = stage.stageHeight;
			
			bmpsnc = new BmpSnatch();
			addChild(bmpsnc);
			//bmpsnc.init(this,bg);
			
			for(var i:int=0 ; i<xLength ; i++)
			{
				ballScope[i] = new Array();
				for(var j:int=0 ; j < yLength ; j++)
				{
					var ball:Ball = new Ball(ballSize,ballColor);
					ball.x = i*(ball.width+margin);
					ball.y = j*(ball.height+margin);
					ball.alpha=0;
					ballScope[i][j] = ball;
					container.addChild(ball);
					container.x = stage.stageWidth/2;
					container.y = stage.stageHeight/2;
				}
			}
			addChild(bg);
			addChild(container);
					
			stage.addEventListener(Event.ENTER_FRAME, onX);
			//stage.addEventListener(MouseEvent.MOUSE_MOVE, onMmove);
		}
		
		public function onX(e:Event)
		{
			count += gain;
			radian = Math.sin(count) * 4;
			
			container.rotation ++;
			container.x = Math.sin(count)*stage.stageWidth/10 +stage.stageWidth/2;
			container.y = Math.cos(count)*stage.stageHeight/8 +stage.stageHeight/2;
			
			for(var i:int=0 ; i<xLength ; i++)
			{
				for(var j:int=0 ; j<yLength ; j++)
				{					
					var _scope:Sprite = ballScope[i][j];
					
					_scope.x = i*(_scope.width+margin) + radian;
					_scope.y = j*(_scope.height+margin) + radian;
					
					if(Math.random() < spkratio)
					{
						_scope.alpha = radian;
						_scope.scaleX = radian*i/xLength * j/yLength*2;
						_scope.scaleY = radian*i/xLength * j/yLength*2;
					}
					else
					{
						_scope.alpha = Math.random();
						_scope.scaleX = radian * i/xLength*j/yLength;
						_scope.scaleY = radian * i/xLength*j/yLength;
					}
				}
			}
		}
		
		public function onMmove(e:MouseEvent)
		{
			container.scaleX = container.scaleY = mouseX/stage.stageWidth;
			container.rotation = mouseY/stage.stageHeight*360;
		}
	}
}

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