Previous patch location: https://archive.blender.org/developer/D16545 This patch addresses https://projects.blender.org/blender/blender/issues/102376 A new writer is added, the usd_writer_curves.cc to handle transforming the new curves system into USD. The goal was to enable export of the new curves type, but @HooglyBoogly mentioned there is a `curve_legacy_to_curves` utility function that could also handle converting legacy curves to the new Curves type. This very trivially enables the legacy curves for export too so I have included that change in this patch. Co-authored-by: DESKTOP-ON14TH5\Sonny Campbell <sonny.campbell@unity3d.com> Pull Request: https://projects.blender.org/blender/blender/pulls/105375