Re: [actionstep-core] Animation implementation changes

[Zaba Z. <se...@gm...>]

sx? dx? im not familiar with AS-animations at all, can you explain?
Also, toes the framework itself use animation? will the code be updated
then?

On 9/4/06, Ray Chuan <rc...@gm...> wrote:
>
> Hi,
> I've made some changes to NSAnimation and related classes.
>
> There are now 2 main classes to use: ASAnimation and NSAnimation. No,
> that's not a typo, there are 2 such classes. What ASAnimation does is
> allow the delegate with the method animationDidAdvance, which is not
> part of the Cocoa specs.
>
> This is an alternative to what Apple recommends: subclassing
> NSAnimation and overriding the setCurrentProgress method. I find this
> too cumbersome, so the framework now contains ASAnimation which saves
> you the trouble of subclassing NSAnimation.
>
> I've also added more constants to NSAnimationCurve and removed methods
> like setBegin/setChange such that full Cocoa-spec compliance is
> ensured in NSAnimation.
>
> See /trunk/test/org.actionstep.test.ASTestAnimation for an example.
>
> To animate in the RP(Robert Penner)-style, you would do this previously:
> >>>
> anim.setBegin(sx);
> anim.setChange(dx);
> anim.setFrameRate(30);
> anim.setDelegate({
>   animationDidAdvance:function(foo:NSAnimation):Void {
>     mc._x = foo.currentValue();
>   }
> });
> <<<
> Now you to do the same thing, you will do:
> >>>
> // no more setBegin/Change
> anim.setFrameRate(1/30);  //note change in frame rate
> anim.setDelegate({
>   animationDidAdvance:function(foo:NSAnimation):Void {
>     mc._x = sx + foo.currentValue() * dx;
>   }
> });
> <<<
>
> -currentValue is always between 0 and 1, so you can think of it as a
> fraction of the value to animate. Do not confuse this with
> -currentProgress which tells you how much of the animation has
> completed.
>
> --
> Cheers,
> Ray Chuan
>
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-- 
Zaba

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