include "Math2.as" //圖片容器 var menu:Sprite=new Sprite(); //使圖標移動 menu.x = 300; menu.y = 200; //注冊事件偵聽器 menu.addEventListener(Event.ENTER_FRAME,moveMenu); this.addChild(menu); //橢圓在x 和y 軸上的截距 var disx:Number = 200; var disy:Number = 10; //旋轉速度 var speed:Number = 0; initMenu(5); function initMenu(n:int) {         for (var i:int; i<n; i++) {                 var mc:MovieClip = new IconMenu();                 //縮小圖標                 mc.scaleX = mc.scaleY = .5;                 menu.addChild(mc);         } } //事件偵聽器函數 function moveMenu(e:Event):void {         //獲取圖標數         var iconCount:int = menu.numChildren;         //定義數組         var depthArray:Array = new Array();         //把360度平分         var angle:Number = 360 / iconCount;         for (var z:int; z<iconCount; z++) {                 //根據深度獲取圖標                 var mc:MovieClip = menu.getChildAt(z);                 //跳轉到不同幀，來顯示不同的圖標                 mc.gotoAndStop(z+1);                 //設置圖標的位置                 mc.x = cosD(speed + angle*z) * disx;                 mc.y = sinD(speed + angle*z) * disy;                 setProp(mc,"alpha");                 setProp(mc,"scaleX",.2,.7);                 setProp(mc,"scaleY",.2,.7);                 //保存圖標到數組                 depthArray[z] = mc;         }         //重新設置圖標的深度         arrange(depthArray);         speed += 2; } function arrange(depthArray:Array):void {         //按照y坐標排序         depthArray.sortOn("y", Array.NUMERIC);         var i:int = depthArray.length;         while (i--) {                 menu.setChildIndex(depthArray[i], i);         } } function setProp(mc:MovieClip,prop:String,n1:Number = .5, n2:Number = 1):void {         mc[prop] = ((mc.y + 2 * disy) / disy - 1) / 2 * (n2 - n1) + n1; }

 

5、新建.as文檔，保存名為：Math2.as （這個文檔是進行三角函數的計算）

//角度轉弧度 function angleToRadian(angle:Number):Number {         return angle*(Math.PI/180); } //弧度轉角度 function radianToAngle(radian:Number):Number {         return radian*(180/Math.PI); } //計算正弦值 function sinD(angle:Number):Number {         return Math.sin(angleToRadian(angle)); } //計算余弦值 function cosD(angle:Number):Number {         return Math.cos(angleToRadian(angle)); } //計算反正切 function atan2D(y:Number, x:Number):Number {         return radianToAngle(Math.atan2(y, x)); }

 把fla文檔與Math2.as 文檔保存在同一目錄下，進行測試。

討論: http://www.missyuan.com/viewthread.php?tid=417566