mirror of https://github.com/CGAL/cgal
66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
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#include <CGAL/Polygon_mesh_processing/approximated_centroidal_Voronoi_diagram_remeshing.h>
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#include <CGAL/Polygon_mesh_processing/IO/polygon_mesh_io.h>
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#include <CGAL/Surface_mesh.h>
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#include <CGAL/Polyhedron_3.h>
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#include <CGAL/Polygon_mesh_processing/triangulate_faces.h>
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#include <CGAL/Polygon_mesh_processing/bbox.h>
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#include <CGAL/subdivision_method_3.h>
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#include <iostream>
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#include <filesystem>
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namespace PMP = CGAL::Polygon_mesh_processing;
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using K = CGAL::Exact_predicates_inexact_constructions_kernel;
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using Surface_mesh = CGAL::Surface_mesh<K::Point_3>;
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using Polyhedron = CGAL::Polyhedron_3<K>;
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namespace params = CGAL::parameters;
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template <class Mesh>
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void run_test(std::string fname, std::size_t genus, bool subdiv)
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{
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Mesh mesh;
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CGAL::IO::read_polygon_mesh(fname, mesh);
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PMP::triangulate_faces(mesh);
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if (subdiv)
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CGAL::Subdivision_method_3::Loop_subdivision(mesh, params::number_of_iterations(5));
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Mesh ref=mesh;
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CGAL::Bbox_3 bb_ref = PMP::bbox(ref);
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PMP::approximated_centroidal_Voronoi_diagram_remeshing(mesh, 1000);
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CGAL::Bbox_3 bb = PMP::bbox(ref);
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assert(-(vertices(mesh).size()-edges(mesh).size()+faces(mesh).size()-2)/2==genus);
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assert(vertices(mesh).size()>=1000);
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double dx = bb.xmax()-bb.xmin(),
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dy = bb.ymax()-bb.ymin(),
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dz = bb.zmax()-bb.zmin();
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assert(std::abs(bb.xmax()-bb_ref.xmax()) < 0.01 * dx);
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assert(std::abs(bb.ymax()-bb_ref.ymax()) < 0.01 * dy);
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assert(std::abs(bb.zmax()-bb_ref.zmax()) < 0.01 * dz);
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PMP::approximated_centroidal_Voronoi_diagram_remeshing(mesh, 4);
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assert(-(vertices(mesh).size()-edges(mesh).size()+faces(mesh).size()-2)/2==genus);
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}
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int main()
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{
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run_test<Surface_mesh>(CGAL::data_file_path("meshes/tetrahedron.off"), 0, true);
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run_test<Surface_mesh>(CGAL::data_file_path("meshes/tetrahedron.off"), 0, false);
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run_test<Polyhedron>(CGAL::data_file_path("meshes/torus_quad.off"), 1, true);
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run_test<Polyhedron>(CGAL::data_file_path("meshes/torus_quad.off"), 1, false);
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run_test<Surface_mesh>(CGAL::data_file_path("meshes/double-torus-example.off"), 2, true);
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run_test<Surface_mesh>(CGAL::data_file_path("meshes/double-torus-example.off"), 2, false);
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return 0;
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}
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