Since the rotate() method in my Vector Class is also using the basic formula of:

newX=cos(angle)*x-sin(angle)*y;
newY=cos(angle)*y+sin(angle)*x;

Thus, i tried to modify the previous Coordinate Rotation so that it look more simplifed. Do take note that due to the way i wrote my Vector Class, now the rotation will rotate in anti-clockwise direction if it a positive angle.


import Vector;

// angle to rotate in degrees
var a:Number=1;

// define center pts
var centerX:Number=cross._x;
var centerY:Number=cross._y;

this.onEnterFrame=function():Void{

rotate();

}

function rotate():Void{

// return ball position in vector form relative to center pt
var v:Vector=new Vector(ball._x-centerX,ball._y-centerY);

// rotate vector relative to center pt
v.rotate(a);

// add vector to center pt to get final position
ball._x=centerX+v.vx;
ball._y=centerY+v.vy;

}



suggestion