CGAL 6.2 - 3D Simplicial Mesh Data Structures

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SMDS_3/c3t3_example.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Triangulation_3.h>
#include <CGAL/Triangulation_data_structure_3.h>
#include <CGAL/Simplicial_mesh_cell_base_3.h>
#include <CGAL/Simplicial_mesh_vertex_base_3.h>
#include <CGAL/Mesh_complex_3_in_triangulation_3.h>
#include <CGAL/tetrahedral_remeshing.h>
#include <CGAL/tags.h>
#include <CGAL/IO/File_medit.h>
#include <fstream>
using K = CGAL::Exact_predicates_inexact_constructions_kernel;
using Subdomain_index = int;
using Surface_patch_index = unsigned char;
using Curve_index = char;
using Corner_index = short;
using Cb = CGAL::Simplicial_mesh_cell_base_3<K, Subdomain_index, Surface_patch_index>;
using Vb = CGAL::Simplicial_mesh_vertex_base_3<K, Subdomain_index, Surface_patch_index,
Curve_index, Corner_index>;
using Tds = CGAL::Triangulation_data_structure_3<Vb, Cb, CGAL::Sequential_tag>;
using Triangulation = CGAL::Triangulation_3<K, Tds>;
using C3t3 = CGAL::Mesh_complex_3_in_triangulation_3<Triangulation>;
int main(int argc, char* argv[])
{
std::cout.precision(17);
std::cerr.precision(17);
std::string filename = (argc > 1) ? std::string(argv[1])
: CGAL::data_file_path("meshes/elephant.mesh");
Triangulation tr;
std::ifstream is(filename, std::ios_base::in);
if(!CGAL::IO::read_MEDIT(is, tr))
{
std::cerr << "Failed to read" << std::endl;
return EXIT_FAILURE;
}
// [call a remeshing algorithm]
std::ofstream os("after_remeshing.mesh");
CGAL::IO::write_MEDIT(os, tr, CGAL::parameters::all_vertices(true));
os.close();
Triangulation tr2;
std::ifstream is2("after_remeshing.mesh");
if(!CGAL::IO::read_MEDIT(is2, tr2))
{
std::cerr << "Failed to read (#2)" << std::endl;
return EXIT_FAILURE;
}
std::cout << "Done" << std::endl;
return EXIT_SUCCESS;
}
CGAL::Exact_predicates_inexact_constructions_kernel
CGAL::Mesh_complex_3_in_triangulation_3
A data structure to represent and maintain a 3D complex embedded in a 3D triangulation.
Definition: Mesh_complex_3_in_triangulation_3.h:190
CGAL::Simplicial_mesh_cell_base_3
The class Simplicial_mesh_cell_base_3 is a model of the concept SimplicialMeshCellBase_3.
Definition: Simplicial_mesh_cell_base_3.h:76
CGAL::Simplicial_mesh_vertex_base_3
The class Simplicial_mesh_vertex_base_3 is a model of the concept SimplicialMeshVertexBase_3.
Definition: Simplicial_mesh_vertex_base_3.h:103
CGAL::Triangulation_3
CGAL::Triangulation_data_structure_3
CGAL::IO::write_MEDIT
void write_MEDIT(std::ostream &os, const T3 &t3, const NamedParameters &np=parameters::default_values())
outputs a mesh complex to the medit (.mesh) file format.
Definition: File_medit.h:780
CGAL::IO::read_MEDIT
bool read_MEDIT(std::istream &in, T3 &t3, const NamedParameters &np=parameters::default_values())
reads a mesh complex written in the medit (.mesh) file format.
Definition: File_medit.h:910