Export
Like we do for Mesh and PointCloud, export any "velocity" attribute on
the Point domain as native USD "velocities". While testing, a few
additional blender-internal attributes were discovered being exported
which are now excluded during export.
Import
Add the cache modifier as appropriate when we detect that UsdBasisCurve
data is animated. This includes time-varying positions, widths,
velocities, and general attribute values. Before this PR, only the
positions were considered. And like Export, the native USD "velocities"
attribute is now processed.
Adds test coverage as well.
Pull Request: https://projects.blender.org/blender/blender/pulls/133027
Jesse Yurkovich
49ae7ffc9c