2008年3月25日 @ 11:15

AS3 carousel

Flash动画

看到了一个不错的运动标志3D效果,可惜是as2的,我把它改成了as3的,有需要的就拿去吧.
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/**
* ...
* @author 杜增强 2008-03-25 10:16
* @link
* @version 0.1
*/

package {
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.events.*;

public class carousel extends Sprite {

/**
* ball 的数目
*/
private var numOfBalls:Number = 10;
/**
* X轴半径
*/
private var radiusX:Number = 250;
/**
* Y轴半径
*/
private var radiusY:Number = 75;
/**
* X轴中心
*/
private var centerX:Number ;
/**
* Y轴中心
*/
private var centerY:Number;
/**
* 旋转速度
*/
private var speed:Number = 0.05;

public function carousel() {
centerX = this.stage.stageWidth / 2;
centerY = this.stage.stageHeight / 2;
for(var i=0;i<numOfBalls;i++)
{
var t:MovieClip = new ball();
t.name = 'ball' + i;
this.addChild(t);
t.data = i * ((Math.PI * 2) / numOfBalls);
t.addEventListener(Event.ENTER_FRAME, onEnter);
}
this.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
}
/**
* ENTER_FRAME事件
* @param e
*/
private function onEnter(e:Event):void {
var t:MovieClip = e.target as MovieClip;
//设置坐标
t.x = Math.cos(t.data) * radiusX + centerX;
t.y = Math.sin(t.data) * radiusY + centerY;
//设置scaleX和scaleY
var s = t.y / (centerY + radiusY);
s = (s > 1)?1:s;
t.scaleX = t.scaleY = s;
t.alpha = s;
t.data += speed;
}
/**
* MouseMove事件
* @param e
*/
private function onMouseMove(e:MouseEvent):void {
//速度随鼠标坐标改变而改变
speed = (e.stageX - centerX) / 100;
//radiusX和radiusY随鼠标坐标改变而改变
radiusY = e.stageY - centerY;
radiusX = e.stageX - centerX;
}
}

}