//参数常量

const Y_SPEED = 0.07; //y轴变化速度

const X_SPEED = 0.10; //x轴变化速度

const AMPLITUDE = 150.0; //最大振幅

const X_START = stage.stageWidth/2; //x轴的起始点

const Y_START = stage.stageHeight/2; //y轴的起始点

//变量

var ySpeed:Number = Y_SPEED;

var xSpeed:Number = X_SPEED;

var amplitude:Number = AMPLITUDE;

var angleX = 0;

var angleY = 0;

var b:Ball = new Ball();

addChild(b);

b.x = X_START;

b.y = Y_START;

graphics.moveTo(b.x,b.y);

addEventListener(Event.ENTER_FRAME,EnterFrameHandler);

function EnterFrameHandler(e:Event){

b.y = Y_START + Math.sin(angleY) * amplitude;

b.x = X_START + Math.sin(angleX) * amplitude;

angleX += xSpeed;

angleY += ySpeed;

//angleX += Math.random()/10;

//angleY += Math.random()/5;

graphics.lineStyle(1,0xefefef,1);

graphics.lineTo(b.x,b.y);

}