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Updates to animations.md #239

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Nov 5, 2018
Merged

Updates to animations.md #239

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Update animations.md
ehsan-karamad Oct 29, 2018
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Update animations.md
ehsan-karamad Oct 30, 2018
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9 changes: 6 additions & 3 deletions policies/animations.md
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Expand Up @@ -18,7 +18,7 @@ In order to support such animations, the browser has to constantly update the va
all of these properties, and then calculate all their effects on the page; ideally, this has
to has to be done sixty times per second.

When properties such as `size` or `position` are changed in an animation, many other
When properties affecting size or position are changed in an animation, many other
elements on the page to have to be moved around constantly (*layout and re-layout*), and
browsers can struggle to keep up. When that happens, the result is a potentially stuttering
animation and a poorly performing and non-responsive web page; sometimes even the entire *machine*
Expand Down Expand Up @@ -49,8 +49,11 @@ When properties are not interpolable -- there is no such thing as an
intermediate state -- and such properties are "animated" by simply jumping
from the initial to the final value at some point during the animation.

The proposed method for blocking animations is the same: the animation involves a
single jump at the midpoint of the animation interval.
The proposed method for blocking animations is similar to the concept of
[discrete animations](https://drafts.csswg.org/web-animations-1/#discrete)
(for noninterpolable animations) with
[linear timing function](https://drafts.csswg.org/css-easing-1/#linear-timing-function-section):
the animation involves a single jump at the midpoint of the animation interval.

A potential solution: `layout-animations` policy-controlled feature
------------
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