10BC0 [web-animations-2] Specify Animation progress API by DavMila · Pull Request #9937 · w3c/csswg-drafts · GitHub
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[web-animations-2] Specify Animation progress API #9937

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merged 3 commits into from
Feb 29, 2024
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[web-animations-2] Specify Animation progress API #9937

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[web-animations-2] Specify Animation progress API
DavMila Feb 12, 2024
85ccce9
Link progress to algorithm and make infinite duration progres zero
DavMila Feb 13, 2024
d89d8b8
[web-animations-2] Specify Animation progress API
DavMila Feb 21, 2024
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[web-animations-2] Specify Animation progress API 
-Clamp progress to [0,1].
-Zero duration depends on nonegativity of currentTime.
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@DavMila
DavMila committed Feb 21, 2024
commit d89d8b8c7ca7082f228b795fc8cef195126ec3df
11 changes: 9 additions & 2 deletions web-animations-2/Overview.bs
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Expand Up @@ -981,16 +981,23 @@ Add the following sentence:

: If <em>any</em> of the following are true:
* |animation| does not have an [=animation/associated effect=], or
* |animation|'s [=associated effect end=] is zero, or
* |animation|'s [=animation/current time=] is an [=unresolved=] time value,
::
|animation|'s [=animation/progress=] is null.
: If |animation|'s [=associated effect end=] is zero,
::
: If |animation|'s [=animation/current time=] is negative,
:: |animation|'s [=animation/progress=] is zero.

: Otherwise,
:: |animation|'s [=animation/progress=] is one.
: If |animation|'s [=associated effect end=] is infinite,
::
|animation|'s [=animation/progress=] is zero.
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Can the author tell if we're active (after the start time) or inactive (before the start time)?

: Otherwise,
::
<blockquote>
<code><a for="animation">progress</a> = [=animation/current time=] / |animation|'s [=associated effect end=]
<code><a for="animation">progress</a> = min(max([=animation/current time=] / |animation|'s [=associated effect end=], 0), 1)
</code>
</blockquote>

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