Re: [csswg-drafts] [web-animations-1] Additive transform animations easily invoke undesirable matrix interpolation

Interestingly the test case for this issue, https://jsfiddle.net/flackr/1qj34byw/54/, works correctly for me in Firefox now. As does the original test case: http://jsbin.com/gazakifuma/1/edit?js,output .

I believe that is due to implementing the initial spec change for issue #927 in [Firefox 62](https://bugzilla.mozilla.org/show_bug.cgi?id=1464647). We have [yet to implement](https://bugzilla.mozilla.org/show_bug.cgi?id=1472917) the updated resolution to that issue, however.

I'm curious about this issue because I'm working on implementing [coalescing of forwards-filling animations in Firefox](1253476) and suddenly the "neutral value" idea is interesting again. That's because in order to collapse a series of forwards filling animations that fill part-way through an interpolation interval, we'd really like to be able to combine different values with a neutral value representing the underlying value, and then simply add that result to the underlying value when we come to composite.

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Received on Monday, 13 August 2018 06:57:12 UTC