Author USD Physics for ovphysx

This skill explains how to author a USD scene so that ovphysx can load and simulate it. ovphysx consumes pre-authored USD: you build the scene first, then populate an ovstage.Stage, call advance_write_floor() to seal the ordinal, and attach with attach_ovstage(). Drain later edits with update_from_ovstage(), and clear the stage with reset_stage(). See basic-workflow and docs/ovstage_integration.md for the populate/seal/attach sequence.

When to Use

Use this skill when you need to create or edit USD content that defines physics: a rigid body, a collider, mass properties, or the physics scene itself.

Do not use this skill for the runtime API (creating an instance, stepping, reading or writing tensors). Those are covered by basic-workflow, tensor-bindings-cpu, tensor-bindings-gpu, and clone-environments.