flash on 2010-2-12

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favorite:2
lines:92
license : MIT License
modified : 2010-02-12 14:13:04

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package
{
	import caurina.transitions.Tweener;
	
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.BlendMode;
	import flash.display.Graphics;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.filters.BlurFilter;
	import flash.filters.ColorMatrixFilter;
	import flash.filters.GlowFilter;
	import flash.geom.Point;
	
	
	[SWF (backgroundColor='#000000', frameRate=30)]
	
	public class Glow02 extends Sprite
	{
		private var container:Sprite;
		private var line:Sprite;
		private var bmd:BitmapData;
		private var bmp:Bitmap;
		
		private var ptArray:Array = [];
		private var spArray:Array = [];
		
		
		public function Glow02()
		{
			initDisplay();
			
			addEventListener(Event.ENTER_FRAME, drawLine);
			addEventListener(Event.ENTER_FRAME, render);
		}
		
		private function initDisplay():void
		{
			container = new Sprite();
			
			line = new Sprite();
			line.graphics.lineStyle(2, 0xFFFFFF);
			container.addChild(line);
			
			//addChild(container);
			
			bmd = new BitmapData(stage.stageWidth, stage.stageHeight, true, 0x00000000);
			bmp = new Bitmap();
			bmp.bitmapData = bmd;
			bmp.blendMode = BlendMode.ADD;
			addChild(bmp);
		}
		
		private var pt:Point = new Point();
		private var i:int = -1;
		
		private function drawLine(event:Event):void
		{
			var l:int = spArray.length;
			var sp:Sprite = new Sprite();
			var g:Graphics = sp.graphics;
			
			spArray.push(sp);
			container.addChild(sp);
			g.lineStyle(2, 0xFFFFFF);
			//g.drawCircle(mouseX, mouseY, 2);
			var pt0:Point = ptArray[i - 1];
			
			if (pt0)
				g.moveTo(pt0.x, pt0.y);
			
			var pt1:Point = ptArray[i];
			
			if (pt1)
				g.lineTo(pt1.x, pt1.y);
			
			pt.x = mouseX;
			pt.y = mouseY;
			ptArray.push(pt.clone());
			
			i++;
			
			if (l > 10)
			{
				ptArray.shift();
				
				var deleteSP:Sprite = spArray.shift();
				Tweener.addTween(deleteSP, {alpha:0, time:0.3, transition:"linear",
					onComplete:function ():void
					{
						deleteSP.graphics.clear();
						container.removeChild(deleteSP);
					}
				})
				
				i--;
			}
		}
		
		private function render(event:Event):void
		{
			bmd.draw(container);
			
			var point:Point = new Point();
			
			bmd.threshold(bmd, bmd.rect, point, "<", 0x00333333, 0x00000000, 0x00FF0000, true);
			
			var matrix:Array = [
								1, 0, 0, 0, 0,
								0, 1, 0, 0, 5,
								0, 0, 1, 0, 2,
								0, 0, 0, 1, -5
								];
			
			var matrixFilter:ColorMatrixFilter = new ColorMatrixFilter(matrix);
			
			//bmd.applyFilter(bmd, bmd.rect, point, new GlowFilter(0x0000FF, 1, 6, 6, 20));
			bmd.applyFilter(bmd, bmd.rect, point, new GlowFilter(0x00ccff, 1, 10, 10, 2));
			bmd.applyFilter(bmd, bmd.rect, point, new BlurFilter(5, 5));
			//bmd.applyFilter(bmd, bmd.rect, point, matrixFilter);
			bmd.applyFilter(bmd, bmd.rect, point, new GlowFilter(0x2375fd, 5, 5, 1, 1));
			//bmd.applyFilter(bmd, bmd.rect, point, new BlurFilter(10, 10));
		}
	}
}

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