\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)
CGAL 5.0 - Triangulated Surface Mesh Approximation
Surface_mesh_approximation/vsa_approximation_2_example.cpp
#include <iostream>
#include <fstream>
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Surface_mesh_approximation/approximate_triangle_mesh.h>
typedef boost::graph_traits<Mesh>::face_descriptor face_descriptor;
typedef Mesh::Property_map<face_descriptor, std::size_t> Face_proxy_pmap;
int main()
{
// read input surface triangle mesh
Mesh mesh;
std::ifstream file("data/bear.off");
file >> mesh;
// output indexed triangle mesh
std::vector<Kernel::Point_3> anchors;
std::vector<std::array<std::size_t, 3> > triangles; // triplets of indices
// output face proxy index property map
Face_proxy_pmap fpxmap =
mesh.add_property_map<face_descriptor, std::size_t>("f:proxy_id", 0).first;
// output planar proxies
std::vector<Kernel::Vector_3> proxies;
// free function interface with named parameters
CGAL::parameters::min_error_drop(0.05). // seeding with minimum error drop
number_of_iterations(40). // set number of clustering iterations after seeding
subdivision_ratio(0.3). // set chord subdivision ratio threshold when meshing
face_proxy_map(fpxmap). // get face partition map
proxies(std::back_inserter(proxies)). // output proxies
anchors(std::back_inserter(anchors)). // output anchor points
triangles(std::back_inserter(triangles))); // output indexed triangles
return EXIT_SUCCESS;
}