\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)

CGAL 4.8 - Polygon Mesh Processing

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Polygon_mesh_processing/stitch_borders_example.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/boost/graph/graph_traits_Polyhedron_3.h>
#include <CGAL/IO/Polyhedron_iostream.h>
#include <CGAL/Polygon_mesh_processing/stitch_borders.h>
#include <iostream>
#include <fstream>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Polyhedron_3<K> Polyhedron;
int main(int argc, char* argv[])
{
const char* filename = (argc > 1) ? argv[1] : "data/full_border_quads.off";
std::ifstream input(filename);
Polyhedron mesh;
if (!input || !(input >> mesh) || mesh.is_empty()) {
std::cerr << "Not a valid off file." << std::endl;
return 1;
}
std::cout << "Before stitching : " << std::endl;
std::cout << "\t Number of vertices :\t" << mesh.size_of_vertices() << std::endl;
std::cout << "\t Number of halfedges :\t" << mesh.size_of_halfedges() << std::endl;
std::cout << "\t Number of facets :\t" << mesh.size_of_facets() << std::endl;
CGAL::Polygon_mesh_processing::stitch_borders(mesh);
std::cout << "Stitching done : " << std::endl;
std::cout << "\t Number of vertices :\t" << mesh.size_of_vertices() << std::endl;
std::cout << "\t Number of halfedges :\t" << mesh.size_of_halfedges() << std::endl;
std::cout << "\t Number of facets :\t" << mesh.size_of_facets() << std::endl;
return 0;
}