e958afbd19
Unified the codebase language to English throughout. German text appeared in code comments, test file headers, CI step names, and several markdown documents. All natural-language text is now English; proper nouns (Institut für Mathematik, Technische Universität Berlin) are unchanged. Files changed: - .gitea/workflows/cpp-tests.yml — CI step names and job comments - code/include/mesh_utils.hpp — inline comment - code/tests/cgal/CMakeLists.txt — section comment block - code/tests/cgal/test_geometry_utils.cpp — full file header + all test comments - doc/math/references.md — geometry-central section - doc/math/validation.md — Section 9 (geometry-central cross-validation) - doc/roadmap/phases.md — Optional geometry-central track (GC-1/2/3) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
#pragma once
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#include <CGAL/Surface_mesh.h>
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#include <Eigen/Dense>
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#include <CGAL/Polygon_mesh_processing/triangulate_faces.h>
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namespace mesh_utils {
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template <typename Kernel>
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void cgal_to_eigen(CGAL::Surface_mesh<typename Kernel::Point_3>& mesh,
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Eigen::MatrixXd& V, Eigen::MatrixXi& F) {
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CGAL::Polygon_mesh_processing::triangulate_faces(mesh);
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V.resize(mesh.num_vertices(), 3);
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F.resize(mesh.num_faces(), 3);
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for (auto v : mesh.vertices()) {
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auto p = mesh.point(v);
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V.row(v.idx()) << p.x(), p.y(), p.z();
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}
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Eigen::Index face_idx = 0;
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for (auto f : mesh.faces()) {
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int vertex_count = 0;
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for (auto h : CGAL::halfedges_around_face(mesh.halfedge(f), mesh)) {
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auto v = mesh.target(h);
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F(face_idx, vertex_count) = v.idx();
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++vertex_count;
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}
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face_idx++;
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}
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}
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template <typename Kernel>
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void simple_visualize_mesh(Eigen::MatrixXd& V, Eigen::MatrixXi& F) {
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igl::opengl::glfw::Viewer viewer;
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viewer.data().set_mesh(V, F);
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viewer.launch();
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}
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// Zero-copy map for V (optional)
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template <typename Kernel>
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Eigen::Map<Eigen::Matrix<double, Eigen::Dynamic, 3, Eigen::RowMajor>>
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get_vertex_map(CGAL::Surface_mesh<typename Kernel::Point_3>& mesh) {
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auto& points = mesh.points();
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double* data = reinterpret_cast<double*>(&points[0][0]);
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return {data, static_cast<Eigen::Index>(points.size()), 3};
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}
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} // namespace
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