Ruview/examples/three.js/demos
Claude 3161af52da
feat(offaxis): clean-room Kooima off-axis projection in Rust/WASM (ADR-324)
New leaf crate v2/crates/ruview-offaxis implementing ADR-324's projection
core from the published math only (Kooima 2008 generalized perspective
projection; Casiez 2012 one-euro filter) — no code from the unlicensed
prior-art repo. Dependency-free native core; wasm-bindgen surface gated to
wasm32 (cdylib+rlib, ~54 KB wasm after bindgen).

- projection: Screen (3 corners, any orientation) + off_axis() -> typed
  errors, never NaN matrices; column-major f64 (three.js Matrix4 layout).
  Tests pin the defining invariants: screen corners -> NDC corners for a
  grid of eye positions and tilted screens; screen-plane points are
  eye-invariant; centered eye reduces to the symmetric frustum; near/far
  map to NDC -1/+1.
- filter: one-euro with injected timestamps (no clock in crate);
  monotonicity/convergence/NaN-rejection tests.
- rf: field-peak extraction mirroring field_localize.rs constants
  (X_SCALE 0.6, Z_SCALE 0.5, PEAK_THRESHOLD 0.35) and the Tier B
  coarse-parallax stage (deadband, gain, hard clamp) so over-claiming is
  impossible at the API level. No accuracy numbers asserted.
- wasm: OffAxisCamera + RfParallax bindgen classes; per-frame updates hold
  last good state instead of throwing.
- benches (criterion): full Tier B frame ~598 ns; argmax scan optimized
  -18%/-33% (20x20/100x100). MEASURED table + reproducer in README.
- examples/three.js/demos/07-off-axis-window.html: demo with SYNTHETIC
  mouse simulator and labeled RF Tier B mode ('coarse body parallax - not
  head tracking'), physical calibration panel, /ws/sensing input, and a
  build-instructions overlay when the local pkg/ output is missing
  (generated artifacts stay uncommitted; .gitignore entry added).
- Validated 23 unit tests + doctest, clippy clean, wasm32 release build,
  Node smoke test of the bindgen output, and a headless-Chromium run of
  the demo (engine load, eye response, mode labels, ws failure path).
- ADR-324: header + section 2.5 amendment recording the Rust/WASM core.

Co-Authored-By: claude-flow <ruv@ruv.net>
Claude-Session: https://claude.ai/code/session_01BU3NcEgTpAVvu5QGtw4czT
2026-08-16 23:52:43 +00:00
..
01-helpers.html feat(examples/three.js): cinematic skinned realtime pose demo + folder reorg (#584) 2026-05-17 17:01:02 -04:00
02-cinematic.html feat(examples/three.js): cinematic skinned realtime pose demo + folder reorg (#584) 2026-05-17 17:01:02 -04:00
03-skinned.html feat(examples/three.js): cinematic skinned realtime pose demo + folder reorg (#584) 2026-05-17 17:01:02 -04:00
04-skinned-fbx.html fix(three.js): graceful banner when X Bot.fbx 404s on gh-pages (#651) 2026-05-19 18:43:21 -04:00
05-skinned-realtime.html fix(three.js): graceful banner when X Bot.fbx 404s on gh-pages (#651) 2026-05-19 18:43:21 -04:00
07-off-axis-window.html feat(offaxis): clean-room Kooima off-axis projection in Rust/WASM (ADR-324) 2026-08-16 23:52:43 +00:00