Re: [actionstep-core] Animating views

[Ray C. <rc...@gm...>]

Hi,

On 9/4/06, thomas mery <tho...@gm...> wrote:
> hi all,
>
> I'm in the process of animating views and I was looking at NSAnimation and
> NSAnimationCurve
>
> I also noticed the in ASAnimatedTabView the animation process is done with a
> timer without resorting to NSAnimation

I'm working on making it use A/NSAnimation, so that it can be
standardised. NSAnimation uses a timer internally too, by the way.

> Also there is only one NSAnimationCurve available and the constructor of
> this class is private (from which I deduce that the class needs to be
> augented with other curves types or subclassed since NSAnimation requires an
> instance of NSAnimationCurve and cannot use ASDraw functions that returns an
> easing equation)

Please update your working copy. I've added a ton of easing functions.

> Also I noticed the NSanimation instance can have a delegate, what would I
> typically use it for ?

You *must* use the delegate to update/animate, unless you prefer
subclassing. Please see the test file
/trunk/test/org.actionstep.test.ASTestAnimation for an example.

> It would really help me if someone would comment on the best way to go about
> animating views.

You shouldn't face much difficulty, because views use movieclips
anyway. Say you want to move a window accross the screen:

animationDidAdvance:function(anim:NSAnimation):Void {
  win.setFrameOrigin(win.frameOrigin().translate(
    foo.currentValue() * dx + sx, 0));
  // force update
  win.displayIfNeeded();
}

> Thnaks in advance
>
> Thomas
>
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-- 
Cheers,
Ray Chuan