Re: [css-transforms] transform interpolation rules should operate better on their own results

On Thursday 2014-02-27 15:49 +0000, Dirk Schulze wrote:
> You have the start and end value and know when you interrupted the animation. So you could reverse animation function and therefore the animation using the same algorithms as you started the animation.

You could, and that would address this case.  It would probably be a
good idea to change the spec to say this.

Though it still wouldn't address any case of this problem where the
intermediate value made a round-trip through Javascript code.

> Is it correct to assume that the interpolation values that you get by matrix interpolation can not be reversed correctly? If that is the case, do you have other suggestions?

I'm not quite sure what you mean, but I don't have other ideas other
than doing numerical interpolation for perspective(), as you
suggest:

> We could do a numerical interpolation for perspective() as well. I need to investigate why chose not to do this.

-David

-- 
𝄞   L. David Baron                         http://dbaron.org/   𝄂
𝄢   Mozilla                          https://www.mozilla.org/   𝄂
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