Files
ConformalLabpp/code/tests/test_hyper_ideal_visualization_utility.cpp
Tarik Moussa d3c08b3bc0
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
quality: 2 new gates (cmake-format, codespell) + SPDX rollout (60 files)
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

54 lines
2.3 KiB
C++

// Copyright (c) 2024-2026 Tarik Moussa.
// SPDX-License-Identifier: MIT
// Port of de.varylab.discreteconformal.plugin.HyperIdealVisualizationPluginTest (Java/JUnit).
//
// Tests the conversion from a hyperbolic circle (hyperboloid model)
// to its Euclidean representation (Poincaré disk model).
//
// Java test: static method HyperIdealVisualizationPlugin
// .getEuclideanCircleFromHyperbolic(double[] center, double radius)
// C++ port: conformallab::getEuclideanCircleFromHyperbolic(Vector4d, double)
// in hyper_ideal_visualization_utility.hpp
#include "hyper_ideal_visualization_utility.hpp"
#include <gtest/gtest.h>
#include <cmath>
using namespace conformallab;
// Corresponds to Java testGetEuclideanCircleFromHyperbolic_Centered()
//
// A hyperbolic circle centered at the origin (0,0,0,1) with radius 1.
// In the Poincaré disk this maps to a Euclidean circle centered at (0,0)
// with radius sinh(1) / (cosh(1) + 1).
TEST(HyperIdealVisualizationUtilityTest, EuclideanCircleFromHyperbolic_Centered)
{
Eigen::Vector4d center(0.0, 0.0, 0.0, 1.0);
const double radius = 1.0;
auto result = getEuclideanCircleFromHyperbolic(center, radius);
const double expected_r = std::sinh(1.0) / (std::cosh(1.0) + 1.0);
EXPECT_NEAR(0.0, result[0], 1E-12) << "Euclidean cx should be 0";
EXPECT_NEAR(0.0, result[1], 1E-12) << "Euclidean cy should be 0";
EXPECT_NEAR(expected_r, result[2], 1E-12) << "Euclidean radius mismatch";
}
// Corresponds to Java testGetEuclideanCircleFromHyperbolic_OffCenter()
//
// A hyperbolic circle centered at (sinh(1),0,0,cosh(1)) with radius 1.
// By symmetry (center is on the x-axis, circle is symmetric about it):
// • the Euclidean center lies on the x-axis → cy = 0
// • the Euclidean center equals the radius → cx = r (the circle passes through the Poincaré origin)
TEST(HyperIdealVisualizationUtilityTest, EuclideanCircleFromHyperbolic_OffCenter)
{
Eigen::Vector4d center(std::sinh(1.0), 0.0, 0.0, std::cosh(1.0));
const double radius = 1.0;
auto result = getEuclideanCircleFromHyperbolic(center, radius);
EXPECT_NEAR(result[0], result[2], 1E-12) << "cx should equal Euclidean radius";
EXPECT_NEAR(0.0, result[1], 1E-12) << "cy should be 0 (x-axis symmetry)";
}