Math类中的简单应用

this.addEventListener(Event.ENTER_FRAME,onframehandler);
var angle0:Number = 1;
var angle1:Number = 2;
var angle2:Number = 3;
var angle3:Number = 4;
var angle4:Number = 5;
var angle5:Number = 6;
var r1:Number = 200;
var r2:Number = 50;


function onframehandler(e:Event):void
{
	
		ball0.x = r1 * Math.cos(angle0) + 250;
		ball0.y = r2 * Math.sin(angle0) + 200;
		angle0 +=  0.05;
		ball1.x = r1 * Math.cos(angle1) + 250;
		ball1.y = r2 * Math.sin(angle1) + 200;
		angle1 +=  0.05;
		ball2.x = r1 * Math.cos(angle2) + 250;
		ball2.y = r2 * Math.sin(angle2) + 200;
		angle2 +=  0.05;
		ball3.x = r1 * Math.cos(angle3) + 250;
		ball3.y = r2 * Math.sin(angle3) + 200;
		angle3 +=  0.05;
		ball4.x = r1 * Math.cos(angle4) + 250;
		ball4.y = r2 * Math.sin(angle4) + 200;
		angle4 +=  0.05;
		ball5.x = r1 * Math.cos(angle5) + 250;
		ball5.y = r2 * Math.sin(angle5) + 200;
		angle5 +=  0.05;
	
	
}

　　

     今天学习了一些Math类的一些基本用法，有个例子：五个小球围绕一个中心旋转，代码如上。