- From: Jon Ronnenberg <jon.ronnenberg@gmail.com>
- Date: Sun, 23 Jun 2013 12:38:36 +0200
- To: Rik Cabanier <cabanier@gmail.com>
- Cc: Shane Stephens <shans@google.com>, www-style list <www-style@w3.org>
- Message-ID: <CAPEZGVs=U5-JrOdptdsfKawM55tQTPkUdmJym-1QaxbGnH5fdA@mail.gmail.com>
Thank you both. I didn't think of using scaleY but it's perfect in this use-case <http://jsfiddle.net/dotnetCarpenter/PhyQc/8/>. Still, I believe there exist further corner cases where it's desirable to animate to/from zero values, using a matrix. Shouldn't the spec matrix interpolation handle such cases? On Sun, Jun 23, 2013 at 4:58 AM, Rik Cabanier <cabanier@gmail.com> wrote: > yes, > in general it's much better to use the other transform function than a > matrix. Matrix interpolation was added for completeness but you shouldn't > really be using it. > > The current matrix decomposition logic also only matches Chrome at the > moment. Both Safari and Firefox will use different interpolation logic so > your animation might look different. > > > On Sat, Jun 22, 2013 at 7:32 PM, Shane Stephens <shans@google.com> wrote: > >> >> On Jun 23, 2013 11:48 AM, "Jon Ronnenberg" <jon.ronnenberg@gmail.com> >> wrote: >> > >> > According to Decomposing the Matrix, transitions from matrix(1, 0, 0, >> 0, 0, 0) to matrix(1, 0, 0, 1, 0, 0) is not possible. This simple transform >> is saying an element is zero units high and will become it's full height. >> Imagine a slide-down animation. >> > >> > Due to this, browser vendors can not "fix" this without violating the >> specs and web authors have to work around this limitation by using >> max-height transitions with guessed maximum height or revert to use >> javascript. >> >> That may be true with regards to browser vendors, but web authors can use >> the much simpler work around of transitioning scaleY. >> >> Cheers, >> - Shane >> >> > I'm not sure if this is a documentation bug or a spec omission. But I >> sincerely hope that this is not the intended behavior. >> > >> > It should be said that all browsers that supports transform transitions >> can animate from matrix(1, 0, 0, 0.0001, 0, 0) to matrix(1, 0, 0, 1, 0, 0). >> Webkit does however leave a 1px artifact instead of hiding the element >> completely. >> > >> > Cheers, Jon >> > >
Received on Sunday, 23 June 2013 10:39:03 UTC