[Tweener] Tween around circular path

[Zeh Fernando]

That's a way, but personally I believe it's way too wacky.

Personally, independently of the tweening engine used, I'd create a function
that allowed you to project an object on the ellipse then create a
getter/setter and just tween it. Something like


protected var _objectAngle:Number

public function get objectAngle(): Number {
    return _objectAngle;
}

public function set angle(__value:Number): void {
    if (_objectAngle!= __value) {
        _objectAngle= __value;

        // Redraw object
        var radiusX:Number = 10;
        var radiusY:Number = 20;
        var px:Number = Math.cos((_objectAngle / 180) * Math.PI) * radiusX;
        var py:Number = Math.sin((_objectAngle / 180) * Math.PI) * radiusY;
        myObject.x = px;
        myObject.y = py;
    }
}


Something like that. You may need additional transformation if you want to
rotate the ellipsis itself instead of using simple x/y radius.

Zeh

On Mon, Nov 2, 2009 at 2:09 PM, Fred Naude <info at headspacemedia.co.za>wrote:

>  HI there list,
>
>
>
> How would I go about tweening an object around an ellipse with tweener?
>
> Is using Bezier points the only way?
>
>
>
> Thanks,
>
>
>
> Fred
>
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