CGAL 4.7 - 3D Surface Mesh Generation: Surface_mesher/polyhedron_remesher.cpp

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

CGAL 4.7 - 3D Surface Mesh Generation

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Surface_mesher/polyhedron_remesher.cpp
#include <CGAL/Surface_mesh_default_triangulation_3.h>
#include <CGAL/Complex_2_in_triangulation_3.h>
#include <CGAL/make_piecewise_smooth_surface_mesh.h>
#include <CGAL/Polyhedral_surface_3.h>
#include <fstream>
#include <CGAL/Surface_mesh_default_criteria_3.h>
#include <CGAL/Piecewise_smooth_surface_mesh_default_edges_criteria_3.h>
// default triangulation for Surface_mesher
typedef CGAL::Surface_mesh_default_triangulation_3 Tr;
// c2t3
typedef CGAL::Complex_2_in_triangulation_3<Tr> C2t3;
typedef Tr::Geom_traits GT;
typedef GT::Sphere_3 Sphere_3;
typedef GT::Point_3 Point_3;
typedef GT::FT FT;
typedef CGAL::Polyhedral_surface_3<GT> Polyhedral_surface;
int main() {
Tr tr; // 3D-Delaunay triangulation
C2t3 c2t3 (tr); // 2D-complex in 3D-Delaunay triangulation
// defining the surface
std::ifstream file_input("data/triceratops.off");
Polyhedral_surface surface(file_input);
// defining meshing criteria
CGAL::Surface_mesh_default_criteria_3<Tr>
facets_criteria(30., // angular bound
0.5, // radius bound
0.5); // distance bound
CGAL::Surface_mesh_default_edges_criteria_3<Tr>
edges_criteria(0.5, // radius bound
0.5); // distance bound
// meshing surface
CGAL::make_piecewise_smooth_surface_mesh(c2t3, surface,
facets_criteria, edges_criteria,
CGAL::Manifold_tag());
std::cout << "Final number of points: " << tr.number_of_vertices() << "\n";
}