CGAL 6.2 - Meshing and Remeshing of Polygonal Meshes: PMP_Remeshing/triangulate_faces_example.cpp

CGAL 6.2 - Meshing and Remeshing of Polygonal Meshes

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PMP_Remeshing/triangulate_faces_example.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Polygon_mesh_processing/triangulate_faces.h>
#include <CGAL/Polygon_mesh_processing/IO/polygon_mesh_io.h>
#include <CGAL/boost/graph/helpers.h>
#include <iostream>
#include <string>
typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef Kernel::Point_3 Point;
typedef CGAL::Surface_mesh<Point> Mesh;
namespace PMP = CGAL::Polygon_mesh_processing;
int main(int argc, char* argv[])
{
const std::string filename = (argc > 1) ? argv[1] : CGAL::data_file_path("meshes/P.off");
const char* outfilename = (argc > 2) ? argv[2] : "P_tri.off";
Mesh mesh;
if(!PMP::IO::read_polygon_mesh(filename, mesh))
{
std::cerr << "Error: Invalid input." << std::endl;
return EXIT_FAILURE;
}
if(is_empty(mesh))
{
std::cerr << "Warning: empty file?" << std::endl;
return EXIT_SUCCESS;
}
if(!CGAL::is_triangle_mesh(mesh))
std::cout << "Input mesh is not triangulated." << std::endl;
else
std::cout << "Input mesh is triangulated." << std::endl;
PMP::triangulate_faces(mesh);
// Confirm that all faces are triangles.
for(boost::graph_traits<Mesh>::face_descriptor f : faces(mesh))
{
if(!CGAL::is_triangle(halfedge(f, mesh), mesh))
std::cerr << "Error: non-triangular face left in mesh." << std::endl;
}
CGAL::IO::write_polygon_mesh(outfilename, mesh, CGAL::parameters::stream_precision(17));
return EXIT_SUCCESS;
}
CGAL::Exact_predicates_inexact_constructions_kernel
CGAL::Surface_mesh
Kernel::Point_3
CGAL::Polygon_mesh_processing::triangulate_faces
bool triangulate_faces(const FaceRange &face_range, PolygonMesh &pmesh, const NamedParameters &np=parameters::default_values())
triangulates given faces of a polygon mesh.
Definition: triangulate_faces.h:448
CGAL::is_triangle_mesh
bool is_triangle_mesh(const FaceGraph &g)
CGAL::is_triangle
bool is_triangle(typename boost::graph_traits< FaceGraph >::halfedge_descriptor hd, const FaceGraph &g)
CGAL::IO::write_polygon_mesh
bool write_polygon_mesh(const std::string &fname, Graph &g, const NamedParameters &np=parameters::default_values())
Kernel