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[web-animations-1] "origin time" is not a very good name #2079

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birtles opened this issue Dec 5, 2017 · 8 comments
Open

[web-animations-1] "origin time" is not a very good name #2079

birtles opened this issue Dec 5, 2017 · 8 comments

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@birtles
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@birtles birtles commented Dec 5, 2017

@birtles birtles changed the title [web-animations-1] Thing of a better name for than "origin time" for offset of a timeline from its time origin [web-animations-1] Think of a better name for than "origin time" for offset of a timeline from its time origin Dec 5, 2017
@birtles birtles changed the title [web-animations-1] Think of a better name for than "origin time" for offset of a timeline from its time origin [web-animations-1] "origin time" is not a very good name Dec 5, 2017
@verbessern
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@verbessern verbessern commented Aug 2, 2020

How about, "elapsed time"?

@birtles
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@birtles birtles commented Aug 10, 2020

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
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@verbessern verbessern commented Aug 11, 2020

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
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@birtles birtles commented Aug 11, 2020

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

@verbessern
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@verbessern verbessern commented Aug 12, 2020

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

@verbessern
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@verbessern verbessern commented Aug 12, 2020

Maybe "relative time"?

@birtles
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@birtles birtles commented Aug 12, 2020

Oh, I like origin offset. Thank you!

@nigelmegitt
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@nigelmegitt nigelmegitt commented Aug 18, 2020

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.

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