- From: L. David Baron <dbaron@dbaron.org>
- Date: Thu, 6 May 2010 00:05:43 -0700
- To: Simon Fraser <smfr@me.com>
- Cc: Erik Arvidsson <arv@chromium.org>, Alex Meiburg <timeroot.alex@gmail.com>, www-style@w3.org
On Wednesday 2010-05-05 23:46 -0700, Simon Fraser wrote: > We modeled transition/animation timing functions after SVG keySplines: > http://www.w3.org/TR/2001/REC-smil-animation-20010904/#KeySplinesAttribute > > which limit the values between 0 and 1. > > We'd be OK lifting this restriction for CSS (assuming people are > happy with the divergence from SVG), but we'd have to make some > rules about how properties like color get clamped when you go > outside the 0->1 range. There is a relationship between this discussion and the discussion about reversing transitions. I currently have an unlanded patch that vastly simplifies (by avoiding dependence on distance computation) Gecko's handling of reversing of transitions using inversion of the transform timing function. Then again, we need the distance computation for SMIL, so I could perhaps leave it as-is, although I really don't want to figure out how to write a distance computation function for transforms. -David -- L. David Baron http://dbaron.org/ Mozilla Corporation http://www.mozilla.com/
Received on Thursday, 6 May 2010 07:06:17 UTC