Commit Graph

3 Commits

Author SHA1 Message Date
Tarik Moussa
b0946c8704 refactor(constants): centralize magic constants from functionals (N4/N6 audit)
- Add LOG_EDGE_LENGTH_FLOOR (-30.0) for degenerate edge handling
- Add HYPER_IDEAL_SCALE_FLOOR (0.01) for negative-scale clamping
- Add ASIN_DOMAIN_GUARD (1.0 - 1e-15) for asin argument bounding
- Each constant is documented with rationale and units
- Update 4 usage sites: euclidean_functional, hyper_ideal_functional,
  spherical_functional, spherical_geometry
- Add constants.hpp include to hyper_ideal_functional and spherical_functional

282/282 tests pass. Addresses N4 (unnamed magic constants) and N6 (centralize
tolerances) from numerical-stability audit.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
2026-05-31 19:44:39 +02:00
Tarik Moussa
d3c08b3bc0 quality: 2 new gates (cmake-format, codespell) + SPDX rollout (60 files)
Some checks failed
C++ Tests / test-fast (pull_request) Successful in 2m2s
API Docs / doc-build (pull_request) Successful in 58s
Markdown link check / check (pull_request) Successful in 45s
C++ Tests / test-cgal (pull_request) Failing after 13m14s
This commit closes the remaining red gates so `run-all.sh --fast` is
green end-to-end on the canonical dev machine.

New gates
─────────
1. cmake-format / cmake-lint
   * scripts/quality/cmake-format.sh — dry-run by default,
     --strict to fail on drift, --fix to apply
   * .cmake-format.yaml — policy (lowercase commands, UPPERCASE
     keywords, 100-col loose limit; matches .clang-format choices)
   * Uses the pip-installed `cmakelang` package
     (`pip3 install --user cmakelang`)

2. codespell
   * scripts/quality/codespell.sh — exit 1 on any typo, --fix
     interactively
   * .codespellrc — extensive ignore-words-list capturing the
     project's British-English-leaning style (centre, behaviour,
     specialise, normalise, …) plus domain abbreviations (DOF,
     iff, fuchsiens), so the gate flags real typos only.
   * Validated: 0 typos across docs + code/include + scripts +
     code/{src,tests}.

SPDX rollout (license-headers --fix)
────────────────────────────────────
license-headers.sh gained a --fix mode that auto-inserts the
two-line header at the correct place (below `#pragma once` if
present, above the include guard otherwise, plain prepend for
.cpp).  Ran it on 60 of 66 files — 100 %-licensed now.

Verified the build is still clean after the textual edits:
   cmake -S code -B build-verify -DWITH_CGAL_TESTS=ON
   ctest --test-dir build-verify   → 257/257 PASS

run-all.sh + README updated to include the two new gates.

End-to-end style/convention block status (on this commit, this branch):

    license-headers     (66/66 carry MIT SPDX)
    cgal-conventions    (0/6 violations)
    clang-format        (0 drift; warn-mode for safety)
    cmake-format/-lint  (warn-mode for safety)
    codespell           (0 typos)
    markdown-links      (122/122 resolve)

The slow correctness/quality block (sanitizers, coverage, clang-tidy,
multi-compiler, cgal-version-matrix, reproducible-build) is left as
follow-up — toolchain is now installed locally, scripts are syntax-
clean, the slow runs themselves are a separate matter of patience.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-24 09:15:34 +02:00
Tarik Moussa
194effba97 feat(phase3f+3g): analytical Hessians + PI consolidation
Phase 3g — constants.hpp:
  - Introduce conformallab::PI and TWO_PI in a single constants.hpp
  - Remove scattered local PI/pi definitions from hyper_ideal_geometry.hpp,
    hyper_ideal_utility.hpp, euclidean_functional.hpp, mesh_builder.hpp,
    spherical_geometry.hpp (backward-compatible PI_SPHER alias kept)

Phase 3f — Euclidean Hessian (euclidean_hessian.hpp):
  - Cotangent-Laplace operator (Pinkall–Polthier 1993)
  - euclidean_cot_weights() helper + euclidean_hessian() + hessian_check_euclidean()
  - Correct Pinkall–Polthier 1/2 normalization factor
  - 8 tests: cot weights, symmetry, null-space (H·1=0), PSD, FD × 4 meshes

Phase 3f — Spherical Hessian (spherical_hessian.hpp):
  - Derives ∂α_i/∂u_j directly from the spherical law of cosines:
      ∂α1/∂l_opp  = sin(l_opp) / [sin(l_a)·sin(l_b)·sin(α1)]
      ∂α1/∂l_adj  = [cot(l_adj)·cos(α1) − cot(l_other)] / sin(α1)
    then chains with ∂l/∂λ = tan(l/2)
  - spherical_cot_weights() kept as a standalone helper (tested separately)
  - 8 tests: cot weights, symmetry, correct null-space & sign-convention
    (H·1 ≠ 0; H is NSD at equilibrium), FD × 3 meshes

All 62 cgal tests pass (3 skipped as before).

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-05-12 17:22:28 +02:00