flash on 2013-3-18

/**
 * Copyright J.J ( http://wonderfl.net/user/J.J )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/4NuC
 */

package {
    import flash.filters.ConvolutionFilter;
    import flash.filters.BlurFilter;
    import flash.events.Event;
    import flash.display.MovieClip;
    import flash.events.MouseEvent;
    import flash.text.TextFieldAutoSize;
    import flash.text.TextField;
    import flash.display.BitmapData;
    import flash.display.Bitmap;
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        private var w:uint,h:uint
        private var mainbmp:Bitmap
        private var txt:TextField
        private var particles:Vector.<Particle>
        private var num_particle:uint
        private var container:MovieClip
        private var cf:ConvolutionFilter
        public function FlashTest() {
            stage.frameRate=60
            w=stage.stageWidth,h=stage.stageHeight;
            mainbmp=new Bitmap;
            mainbmp.bitmapData=new BitmapData(w,h,false,0xffffff);
            stage.addChild(mainbmp)
            txt=new TextField;
            txt.textColor=0xff0000;
            txt.autoSize=TextFieldAutoSize.LEFT
            stage.addChild(txt)
            particles=new Vector.<Particle>()
            container=new MovieClip;
            cf=new ConvolutionFilter(3,3,
            [.5,1,.5,
            1,0,1,
            .5,1,.5],5)
            
            stage.addEventListener(Event.EXIT_FRAME,loop)
            stage.addEventListener(MouseEvent.MOUSE_MOVE,onMouse_Move)
            // write as3 code here..
            
        }
        private function loop(e:Event):void{
            var l:uint=particles.length
            for(var i:uint;i<l;i++){
               
                particles[i].vy+=particles[i].g
                particles[i].x+=particles[i].vx
                particles[i].y+=particles[i].vy
                if(particles[i].y>h) particles[i].vy*=-1
                if(particles[i].x>w) particles[i].vx*=-1
                if(particles[i].x<2) particles[i].vx*=-1
            }
           
            mainbmp.bitmapData.applyFilter(
            mainbmp.bitmapData,
            mainbmp.bitmapData.rect,
            mainbmp.bitmapData.rect.topLeft,
            cf)
            mainbmp.bitmapData.draw(container)
         }
        private function onMouse_Move(e:MouseEvent):void{
                num_particle++
                txt.text=''+num_particle
                var p:Particle=new Particle(0);
                p.x=stage.mouseX
                p.y=stage.mouseY
                p.scaleX=p.scaleY=1+Math.random()/2
                p.vx=3+Math.random()*-6
                p.vy=Math.random()
                p.g=Math.random()/2
                container.addChild(p)
                particles.push(p);
                
                
        }
    }
}
import flash.display.Shape;
class Particle extends Shape{
    public var vx:Number;
    public var vy:Number;
    public var g:Number;
    public var rad:Number=2;
    public var color:uint;
    public function Particle(c:uint=0):void{
        color=c
        this.graphics.beginFill(color)
        this.graphics.drawCircle(0,0,rad)
        this.graphics.endFill()
    }
}