Tarik Moussa
a4c2a89e7e
feat(phase3c): port SphericalFunctional onto ConformalMesh; update README
...
New headers:
- spherical_geometry.hpp: spherical arc length l(λ) and half-angle formula
for interior angles of a spherical triangle (SphericalFaceAngles struct)
- spherical_functional.hpp: SphericalMaps bundle, setup/assign DOF helpers,
compute_lambda0_from_mesh(), gradient (Θ_v − Σα_v; Schläfli edge formula),
energy via 10-point Gauss-Legendre path integral, gradient_check_spherical()
Updated:
- mesh_builder.hpp: add make_spherical_tetrahedron() (vertices on unit sphere)
and make_octahedron_face() (single right-angled spherical triangle)
- tests/cgal/CMakeLists.txt: enable test_spherical_functional.cpp
- README.md: rewrite for CGAL-package goal, two test targets, all headers,
updated project tree, Phase progress table, key design decisions
Tests (cgal.SphericalFunctional.*): 8 active + 1 skip
- OctaFaceAnglesAreRightAngles, SpherTetAngleSumExceedsPi
- GradientCheck_{OctaFaceVertex, SpherTetVertex, SpherTetAllDofs,
SpherFan4Vertex, MixedPinnedVertices}
- AnglesFiniteAtKnownPoint
All 30 cgal.* tests pass (2 @Ignore skips).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com >
2026-05-12 00:01:24 +02:00
Tarik Moussa
516ac89bd8
feat(phase3b): port HyperIdealFunctional energy + gradient onto ConformalMesh
...
Implements the hyper-ideal discrete conformal map functional on
CGAL::Surface_mesh. The energy and analytic gradient are ported directly
from HyperIdealFunctional.java; correctness is verified via a
finite-difference gradient check (same eps=1E-5 / tol=1E-4 as Java).
New files:
include/hyper_ideal_geometry.hpp — ζ, ζ₁₃, ζ₁₄, ζ₁₅, lij, αij, σi, σij
include/hyper_ideal_functional.hpp — HyperIdealMaps, evaluate_hyper_ideal,
gradient_check
tests/cgal/test_hyper_ideal_functional.cpp — 6 tests (1 skipped @Ignore)
Test results (local, -DWITH_CGAL=ON):
conformallab_cgal_tests: 21 registered | 20 passed | 1 skipped | 0 failed
- GradientCheck_AllHyperIdealTriangle ✓
- GradientCheck_ExtendedDomain ✓
- GradientCheck_TetrahedronAllVariable ✓
- EnergyFiniteAtTestPoint ✓
- GradientCheck_MixedIdealHyperIdeal ✓
- GradientCheck_Fan6AllVariable ✓
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com >
2026-05-11 23:10:23 +02:00
Tarik Moussa
bf9c323d60
feat(phase3a): introduce CGAL Surface_mesh as ConformalMesh foundation
...
Replaces the Java CoHDS with CGAL::Surface_mesh<Point3> (Simple_cartesian
kernel). Adds domain-specific property maps for lambda/theta/idx/alpha and
face geometry type — the direct C++ equivalent of CoVertex/CoEdge adapters.
New files:
include/conformal_mesh.hpp — ConformalMesh type + property-map helpers
include/mesh_builder.hpp — mesh factories (triangle, tetrahedron,
quad-strip, fan) for tests and examples
tests/cgal/ — second test executable (conformallab_cgal_tests)
built only with -DWITH_CGAL=ON
Test results (local, -DWITH_CGAL=ON):
conformallab_tests: 36 registered | 23 passed | 13 skipped | 0 failed
conformallab_cgal_tests: 14 registered | 14 passed | 0 skipped | 0 failed
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com >
2026-05-11 18:36:21 +02:00
