Flash动画制作简单的图片切换方形收缩的变换像册特效

Flash源文件下载：点击这里下载Fla源文件（大小1M，自行杀毒）

制作步骤：

1、首先建立一个蒙板（遮照）影片剪辑。

2、然后从外部导入图片，把导入的图片转变为影片剪辑，设置如下。

3、制作小的图片缩略图，也分别转换为影片剪辑，设置如下。

4、添加Actionscript，如下代码：

imageHeight = 280;
imageWidth = 360;
rows = 6;
boxWidth = imageWidth/rows;
boxHeight = imageHeight/rows;
imageTotal = 5;
thumbHeight = 56;
thumbWidth = 72;
padding = 20;
depth = 0;
newPos = 0;
boxSpeed = 2;
this.createEmptyMovieClip("boxes", 4004);
this.createEmptyMovieClip("top", 4003);
top.setMask(boxes);
mask = this.attachMovie("box", "mask", 4002);
mask._width = imageWidth;
mask._height = imageHeight;
mask._x = padding+(mask._width/2);
mask._y = padding+(mask._height/2);
this.createEmptyMovieClip("bottom", 4001);
bottom.setMask(mask);
shrink = false
function addBoxes() {
 for (var i = 0; i<rows; i++) {
  for (var j = 0; j<rows; j++) {
   var b = boxes.attachMovie("box", "box"+depth, depth);
   b._width = boxWidth;
   b._height = boxHeight;
   b._x = (boxWidth/2)+padding+(boxWidth*i);
   b._y = (boxHeight/2)+padding+(boxHeight*j);
   depth++;
  }
 }
}
function resetBoxes() {
 for (var i = 0; i<(rows*rows); i++) {
  boxes["box"+i]._width = boxWidth;
  boxes["box"+i]._height = boxHeight;
 }
}
function shrinkBoxes() {
 if (shrink) {
  for (var i = 0; i<depth; i++) {
   var b = boxes["box"+i];
   if (b._width>0) {
    b._width -= boxSpeed;
    b._height -= boxSpeed;
   }
   if (b._width < 1) {
    shrink = false;
    resetBoxes();
    top._x = newPos;
    break;
   }
  }
 }
}
function addImages() {
 for (var k = 0; k<imageTotal; k++) {
  var m = top.attachMovie("image_"+k, "image_"+k, depth);
  depth++;
  var b = bottom.attachMovie("image_"+k, "image_"+k, depth);
  depth++;
  m._x = b._x=padding+(mask._width*k);
  m._y = b._y=padding;
  var t = this.attachMovie("thumb_"+k, "thumb_"+k, depth);
  depth++;
  t._x = padding+(thumbWidth*k);
  t._y = (padding*2)+imageHeight;
  t.pos = k*-imageWidth;
  t.onPress = function() {
   if (newPos != this.pos) {
    if (!shrink) {
     bottom._x = newPos=this.pos;
     shrink = true;
    }
   }
  };
 }
}
addBoxes();
addImages();
this.onEnterFrame = function() {
 shrinkBoxes();
};