可变阴影矩形--（make thing move）DropShadowFilter

来源：互联网发布：排名优化软件编辑：程序博客网时间：2024/05/22 15:28

package  {import flash.display.Sprite;import flash.events.Event;import flash.filters.DropShadowFilter;public class AnimatedFilters extends Sprite {private var filter:DropShadowFilter;private var sprite:Sprite;public function AnimatedFilters() {// constructor codeinit();}private function init():void{sprite = new Sprite();sprite.graphics.lineStyle(2);sprite.graphics.beginFill(0xffff00);sprite.graphics.drawRect(-50,-50,100,100);//前两个参数是相对位置，即矩形实际位置为150,150sprite.graphics.endFill();sprite.x=200;sprite.y=200;addChild(sprite);filter = new DropShadowFilter(0,0,0,1,20,20,.3);addEventListener(Event.ENTER_FRAME,onEnterFrame);}private function onEnterFrame(event:Event):void{var dx:Number = mouseX - sprite.x;var dy:Number = mouseY - sprite.y;filter.distance = -Math.sqrt(dx*dx+dy*dy)/10;filter.angle = Math.atan2(dy,dx)*180/Math.PI;sprite.filters = [filter];}}}

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