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CSS Working Group Editor Drafts
https://drafts.csswg.org/
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[web-animations-1] "origin time" is not a very good name #2079

Open birtles opened 6 years ago

birtles commented 6 years ago

See: https://drafts.csswg.org/web-animations-1/#document-timelines

It's too similar to time origin.

verbessern commented 3 years ago

How about, "elapsed time"?

birtles commented 3 years ago

I'm not sure about elapsed time. It's not necessarily the case that any time has elapsed--it's merely an offset that can be set to any value. Perhaps just "time offset"?

verbessern commented 3 years ago

Elapsed time of zero is a valid elapsed time. The text in this paragraph is somehow unclear, I would assume that current_time = now - timeline.start_time, that for me is exactly the elapsed time, as its always >= 0. Negative can't be, in a well designed system.

birtles commented 3 years ago

It's reasonable for the "origin time" to be negative so perhaps "time offset" fits that better.

verbessern commented 3 years ago

It could be, but it sounds general, "origin offset time"?

verbessern commented 3 years ago

Maybe "relative time"?

birtles commented 3 years ago

Oh, I like origin offset. Thank you!

nigelmegitt commented 3 years ago

In my experience from TTML, it is massively helpful to have terminology distinguish between spatial and temporal coordinate systems, because it is extremely easy to get confused between the two. It is typical in English language usage for temporal concepts to be described in spatial terms.

For that reason, I would advocate for example "origin offset time" to "origin offset".

However I would also note that in temporal coordinates, an offset is typically a duration whereas a time is typically a specific moment.