This commit adds extensive testing and documentation for TinyUSDZ's timeSamples
evaluation to ensure compatibility with OpenUSD's behavior.
## Added Tests
- Single timeSample behavior (held constant for all times)
- Default value vs timeSamples coexistence
- Multiple timeSamples with linear interpolation
- Attribute::get() API with various time codes
- Held vs linear interpolation modes
- Edge cases and boundary conditions
## Key Behaviors Verified
- Default values and time samples exist in separate value spaces
- TimeCode::Default() always returns the default value (e.g., 7,8,9)
- Numeric time codes use time samples with interpolation
- Values are held constant before/after sample range (no extrapolation)
- Linear interpolation between samples when multiple samples exist
## Documentation
- doc/timesamples.md: Complete guide with Python test scripts and insights
- doc/timesamples-tinyusdz-tests.md: Test results and verification summary
- OpenUSD test scripts demonstrating expected behavior
All 896 test assertions pass, confirming TinyUSDZ correctly implements OpenUSD's
timeSamples evaluation semantics.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
