WIP: USD: add velocity to USD importer #104462
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Reference: blender/blender#104462
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Delete Branch "SonnyCampbell_Unity/blender:unity/T96182-usd-reader-velocity"
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Depends on #104459
Velocity is already handled in the usd exporter implementation, and for the alembic importer/exporter. I copied the existing alembic importer implementation.
This was raised because a user noticed that motion blur was not working for a fluid sim when imported with USD.
Original reviews and comments are here:
https://archive.blender.org/developer/D15430
Fixes #96182
T96182: Add velocity to usd importerto USD: add velocity to USD importerUSD: add velocity to USD importerto WIP: USD: add velocity to USD importerI marked this PR as 'WIP' as it contains the commits of #104459 as well, making it hard to review.
I'll hand over the review to @makowalski , as I'm no longer directly involved with USD development.
@SonnyCampbell_Unity if you want to get this reviewed, please remove the 'WIP:' prefix -- that's an indicator that says "this is not ready for review yet".
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