import flash.display.Sprite;

import flash.events.Event;

import flash.events.TimerEvent;

import flash.utils.Timer;

 

 var _sprite:Sprite;

 var _angle:Number = 135;

 var _speed:Number = 4;

 var _timer:Timer;

 

 function AngularVelocity() {

        _sprite = new Sprite();

        _sprite.graphics.beginFill(0x0000ff, 100);

        _sprite.graphics.drawCircle(0,0,25);

        _sprite.graphics.endFill();

        _sprite.x = 200;

        _sprite.y = 100;

        addChild(_sprite);

        _timer = new Timer(30);

        _timer.addEventListener("timer", onTimer);

        _timer.start();

}

 function onTimer(event:TimerEvent):void {

        var radians:Number = _angle * Math.PI / 180;

        var vx:Number = Math.cos(radians) * _speed;

        var vy:Number = Math.sin(radians) * _speed;

        _sprite.x += vx;

        _sprite.y += vy;

 

}

  AngularVelocity();