\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)
CGAL 5.0.1 - 3D Mesh Generation
Mesh_3/mesh_3D_image_with_custom_initialization.cpp
#include "random_labeled_image.h"
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Mesh_triangulation_3.h>
#include <CGAL/Mesh_complex_3_in_triangulation_3.h>
#include <CGAL/Mesh_criteria_3.h>
#include <CGAL/Mesh_3/initialize_triangulation_from_labeled_image.h>
#include <CGAL/Labeled_mesh_domain_3.h>
#include <CGAL/make_mesh_3.h>
#include <CGAL/Image_3.h>
#include <CGAL/Mesh_3/Dump_c3t3.h>
// Domain
typedef CGAL::Labeled_mesh_domain_3<K> Mesh_domain;
#ifdef CGAL_CONCURRENT_MESH_3
typedef CGAL::Parallel_tag Concurrency_tag;
#else
typedef CGAL::Sequential_tag Concurrency_tag;
#endif
// Triangulation
// Criteria
typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
// To avoid verbose function and named parameters call
using namespace CGAL::parameters;
int main()
{
CGAL::Image_3 image = random_labeled_image();
// Domain
Mesh_domain domain = Mesh_domain::create_labeled_image_mesh_domain(image);
// Mesh criteria
Mesh_criteria criteria(facet_angle=30, facet_size=3, facet_distance=1,
cell_radius_edge_ratio=3, cell_size=3);
C3t3 c3t3;
initialize_triangulation_from_labeled_image(c3t3,
domain,
image,
criteria,
(unsigned char)0);
CGAL::refine_mesh_3(c3t3, domain, criteria);
// Output
CGAL::dump_c3t3(c3t3, "out");
return 0;
}