Flash AS3代码实现滤镜动画效果

作者:袖梨 2022-07-02

我们将添加模糊和斜角滤镜给图片,所有的动画都是用 Actionscript 3.0制作,在图片上移动你的鼠标看看效果。当你掌握了这些你将同样能创建另一些滤镜效果,好吧,打开你的我们开始吧。

设置环境:
1. 创建一个新的文档,大小为500x250。
2. 导入两张图片到舞台(大约200x200),你可以象我一样导入一张方的和一张园的图片。
3. 将两张图片转换为MC,你可以这它们取上你喜欢的名字;将注册点移到中心。
4. 给它们取上实例名称分别为:“apple01”和“apple02” 。

进入AS3打开你的动作面板输入下面的代码:

  //使用动画滤镜

  var blurSpeed:Number = 1;

  var bevelSpeed:Number = 5;

  //为两个苹果添加MOUSE_OVER 事件侦听

  appleapple01.addEventListener(MouseEvent.MOUSE_OVER,mouseOverApple01);

  apple02.addEventListener (MouseEvent.MOUSE_OVER, mouseOverApple02);

  //这两个苹果添加MOUSE_OUT 事件侦听

  appleapple01.addEventListener(MouseEvent.MOUSE_OUT,mouseOutApple01);

  apple02.addEventListener (MouseEvent.MOUSE_OUT, mouseOutApple02);

  /*为两个苹果添加ENTER_FRAME,这样我们就能每隔一帧的时间绘制它们*/

  apple01.addEventListener(Event.ENTER_FRAME,enterFrameApple01);

  apple02.addEventListener (Event.ENTER_FRAME, enterFrameApple02);

  //创建并附加模糊滤镜给apple01

  var blur:BlurFilter = new BlurFilter();

  blur.blurX = 20;

  blur.blurY = 20;

  blur.quality = BitmapFilterQuality.HIGH;

  apple01.filters = [blur];

  //创建一个斜角滤镜给apple02

  var bevelFilter:BevelFilter=new BevelFilter(10, 45,0x000000,1, 0xffffff,1,0, 0, 0, BitmapFilterQuality.HIGH,BitmapFilterType.INNER,false);

  apple02.filters = [bevelFilter];

  //设置省缺值(鼠标没移动到苹果上时)

  var mouseIsOverApple01:Boolean = false;

  var mouseIsOverApple02:Boolean = false;

  //当鼠标移到apple01上时调用

  function mouseOverApple01 (event:MouseEvent):void {

  mouseIsOverApple01 = true;

  }

  //当鼠标移到apple02上时调用

  function mouseOverApple02 (event:MouseEvent):void {

  mouseIsOverApple02 = true;

  }

  //当鼠标移出apple01 时调用

  function mouseOutApple01 (event:MouseEvent):void {

  mouseIsOverApple01 = false;

  }

  //当鼠标移出apple02 时调用

  function mouseOutApple02 (event:MouseEvent):void {

  mouseIsOverApple02 = false;

  }

  //这个函数绘制apple01 的动画

  function enterFrameApple01 (event:Event):void {

  //如果鼠标在苹果上移动减少模糊

  if (mouseIsOverApple01 == true) {

  blur.blurX -= blurSpeed;

  blur.blurY -= blurSpeed;

  }

  /* 如果鼠标移出苹果,并且模糊没超过20,我们增加模糊。*/

  if (mouseIsOverApple01 == false && blur.blurX
  blur.blurX += blurSpeed;

  blur.blurY += blurSpeed;

  }

  /*在改变模糊滤镜后我需要重新分配滤镜*/

  apple01.filters = [blur];

  }

  //这个函数绘制apple02的动画

  function enterFrameApple02 (event:Event):void {

  //如果鼠标移到这个苹果上,我们增加模糊滤镜直到100

  if (mouseIsOverApple02 == true && bevelFilter.blurX
  bevelFilter.blurX += bevelSpeed;

  bevelFilter.blurY += bevelSpeed;

  //我们需要分配一个力度给斜角让它可见

  bevelFilter.strength = 5;

  }

  //如果鼠标移出apple02, 减少模糊

  if (mouseIsOverApple02 == false) {

  bevelFilter.blurX -= bevelSpeed;

  bevelFilter.blurY -= bevelSpeed;

  }

  /*如果我们确定模糊滤镜正被使用,我们让整个斜角不可见。(strength is 0).否则我们会看到一些难看的曲线。*/

  if(bevelFilter.blurX == 0) {

  bevelFilter.strength = 0;

  }

  /*当我们改变了斜角滤镜时,我们需要重新分配一次滤镜*/

  apple02.filters = [bevelFilter];

  }

已经完了!测试影片,如果你有什么问题,请访问论坛!下面附代码供研究。

  var blurSpeed:Number = 1;

  var bevelSpeed:Number = 5;

  appleapple01.addEventListener(MouseEvent.MOUSE_OVER,mouseOverApple01);

  apple02.addEventListener (MouseEvent.MOUSE_OVER, mouseOverApple02);

  appleapple01.addEventListener(MouseEvent.MOUSE_OUT,mouseOutApple01);

  apple02.addEventListener (MouseEvent.MOUSE_OUT, mouseOutApple02);

  apple01.addEventListener(Event.ENTER_FRAME,enterFrameApple01);

  apple02.addEventListener (Event.ENTER_FRAME, enterFrameApple02);

  var blur:BlurFilter = new BlurFilter();

  blur.blurX = 20;

  blur.blurY = 20;

  blur.quality = BitmapFilterQuality.HIGH;

  apple01.filters = [blur];

  var bevelFilter:BevelFilter=new BevelFilter(10, 45,0x000000,1, 0xffffff,1,0, 0, 0, BitmapFilterQuality.HIGH,BitmapFilterType.INNER,false);

  apple02.filters = [bevelFilter];

  var mouseIsOverApple01:Boolean = false;

  var mouseIsOverApple02:Boolean = false;

  function mouseOverApple01 (event:MouseEvent):void {

  mouseIsOverApple01 = true;

  }

  function mouseOverApple02 (event:MouseEvent):void {

   mouseIsOverApple02 = true;

  }

  function mouseOutApple01 (event:MouseEvent):void {

  mouseIsOverApple01 = false;

  }

  function mouseOutApple02 (event:MouseEvent):void {

  mouseIsOverApple02 = false;

  }

  function enterFrameApple01 (event:Event):void {

  if (mouseIsOverApple01 == true) {

  blur.blurX -= blurSpeed;

  blur.blurY -= blurSpeed;

  }

  if (mouseIsOverApple01 == false && blur.blurX
  blur.blurX += blurSpeed;

  blur.blurY += blurSpeed;

  }

  apple01.filters = [blur];

  }

  function enterFrameApple02 (event:Event):void {

  if (mouseIsOverApple02 == true && bevelFilter.blurX
  bevelFilter.blurX += bevelSpeed;

  bevelFilter.blurY += bevelSpeed;

  bevelFilter.strength = 5;

  }

  if (mouseIsOverApple02 == false) {

  bevelFilter.blurX -= bevelSpeed;

  bevelFilter.blurY -= bevelSpeed;

  }

  if(bevelFilter.blurX == 0) {

  bevelFilter.strength = 0;

  }

  apple02.filters = [bevelFilter];

  }

效果.

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