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Changelog

All notable changes to this project will be documented in this file.

[Unreleased] - 2025-12-21

Fixed

  • Calibration System: Resolved a critical bug where the calibrate() function updated the state but failed to synchronize with the high-frequency tracking loop. The "Recenter" button now works instantly.
  • Z-Axis Tracking Logic: Switched from using nose.z (relative head rotation) to Iris Distance (1 / distance_between_irises). This allows for true physical depth tracking—leaning closer to the screen now correctly zooms the perspective.
  • Motion Smoothing: Replaced frame-rate dependent smoothing with Time-Based LERP. The tracking smooths consistently regardless of whether the app is running at 30, 60, or 120 FPS.
  • Z-Sensitivity Explosion: Fixed an issue where the new inverse-distance math caused the camera to fly to infinity. Tuned Z_SENSITIVITY in config.ts to 0.1 to map raw inputs to world units correctly.

Added

  • Debug UI: Added "Raw Z" readout to the HeadTracker debug overlay to visualize the raw inverse-iris-distance input.
  • Math Library: Added lerpTime helper for delta-time based interpolation.

Changed

  • Config: Updated src/lib/config.ts with new sensitivity defaults.