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RuView/v2/crates/ruview-offaxis/Cargo.toml
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

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TOML

[package]
name = "ruview-offaxis"
version.workspace = true
edition.workspace = true
authors.workspace = true
license.workspace = true
repository.workspace = true
description = "Clean-room generalized off-axis (head-coupled) perspective projection for RuView demos (ADR-324)"
readme = "README.md"
[lib]
# cdylib for the wasm32 build (ADR-324 demo surface); rlib for native reuse.
crate-type = ["cdylib", "rlib"]
# The native core is dependency-free by design (ADR-324 §2.3): the wasm-bindgen
# surface exists only when compiling for wasm32, so the workspace test gate
# (`cargo test --workspace --no-default-features`) never pulls JS-interop deps.
[target.'cfg(target_arch = "wasm32")'.dependencies]
wasm-bindgen = "0.2"
[dev-dependencies]
criterion = { workspace = true }
[[bench]]
name = "offaxis"
harness = false