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update examples to use Mesh_3

This commit is contained in:
Jane Tournois 2024-06-06 12:48:41 +02:00
parent eb1c10516a
commit 200aef0add
2 changed files with 56 additions and 46 deletions
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56
Poisson_surface_reconstruction_3/examples/Poisson_surface_reconstruction_3/poisson_reconstruction.cpp
View File

@ -14,17 +14,23 @@
#include <CGAL/AABB_traits_3.h>
#include <CGAL/AABB_face_graph_triangle_primitive.h>
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Timer.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/Surface_mesh_default_triangulation_3.h>
#include <CGAL/make_surface_mesh.h>
#include <CGAL/Mesh_triangulation_3.h>
#include <CGAL/Mesh_complex_3_in_triangulation_3.h>
#include <CGAL/Mesh_criteria_3.h>
#include <CGAL/Labeled_mesh_domain_3.h>
#include <CGAL/make_mesh_3.h>
#include <CGAL/facets_in_complex_3_to_triangle_mesh.h>
#include <CGAL/Poisson_implicit_surface_3.h>
#include <CGAL/IO/facets_in_complex_2_to_triangle_mesh.h>
#include <CGAL/Poisson_reconstruction_function.h>
#include <CGAL/IO/read_points.h>
#include <CGAL/compute_average_spacing.h>
#include <CGAL/Polygon_mesh_processing/compute_normal.h>
#include <CGAL/Timer.h>
#include <deque>
#include <cstdlib>
#include <fstream>
@ -51,10 +57,11 @@ typedef CGAL::Polyhedron_3<Kernel> Polyhedron;
// Poisson implicit function
typedef CGAL::Poisson_reconstruction_function<Kernel> Poisson_reconstruction_function;
// Surface mesher
typedef CGAL::Surface_mesh_default_triangulation_3 STr;
typedef CGAL::Surface_mesh_complex_2_in_triangulation_3<STr> C2t3;
typedef CGAL::Poisson_implicit_surface_3<Kernel, Poisson_reconstruction_function> Surface_3;
// Mesh_3
typedef CGAL::Labeled_mesh_domain_3<Kernel> Mesh_domain;
typedef typename CGAL::Mesh_triangulation_3<Mesh_domain>::type Tr;
typedef CGAL::Mesh_complex_3_in_triangulation_3<Tr> C3t3;
typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
// AABB tree
typedef CGAL::AABB_face_graph_triangle_primitive<Polyhedron> Primitive;
@ -309,32 +316,31 @@ int main(int argc, char * argv[])
// conservative bounding sphere centered at inner point.
FT sm_sphere_radius = 5.0 * radius;
FT sm_dichotomy_error = sm_distance*average_spacing/1000.0; // Dichotomy error must be << sm_distance
Surface_3 surface(function,
Sphere(inner_point,sm_sphere_radius*sm_sphere_radius),
sm_dichotomy_error/sm_sphere_radius);
// Defines surface mesh generation criteria
CGAL::Surface_mesh_default_criteria_3<STr> criteria(sm_angle, // Min triangle angle (degrees)
sm_radius*average_spacing, // Max triangle size
sm_distance*average_spacing); // Approximation error
// Defines generation criteria
Mesh_criteria criteria(CGAL::parameters::facet_angle = sm_angle,
CGAL::parameters::facet_size = sm_radius*average_spacing,
CGAL::parameters::facet_distance = sm_distance*average_spacing);
std::cerr << " make_surface_mesh(sphere center=("<<inner_point << "),\n"
std::cerr << " make_mesh_3 with sphere center=("<<inner_point << "),\n"
<< " sphere radius="<<sm_sphere_radius<<",\n"
<< " angle="<<sm_angle << " degrees,\n"
<< " triangle size="<<sm_radius<<" * average spacing="<<sm_radius*average_spacing<<",\n"
<< " distance="<<sm_distance<<" * average spacing="<<sm_distance*average_spacing<<",\n"
<< " dichotomy error=distance/"<<sm_distance*average_spacing/sm_dichotomy_error<<",\n"
<< " Manifold_with_boundary_tag)\n";
<< " manifold_with_boundary()\n";
// Generates surface mesh with manifold option
STr tr; // 3D Delaunay triangulation for surface mesh generation
C2t3 c2t3(tr); // 2D complex in 3D Delaunay triangulation
CGAL::make_surface_mesh(c2t3, // reconstructed mesh
surface, // implicit surface
criteria, // meshing criteria
CGAL::Manifold_with_boundary_tag()); // require manifold mesh
// Defines mesh domain
Mesh_domain domain = Mesh_domain::create_implicit_mesh_domain(function, bsphere,
CGAL::parameters::relative_error_bound(sm_dichotomy_error / sm_sphere_radius));
// Generates mesh with manifold option
C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria,
CGAL::parameters::no_exude().no_perturb()
.manifold_with_boundary());
// Prints status
const Tr& tr = c3t3.triangulation();
std::cerr << "Surface meshing: " << task_timer.time() << " seconds, "
<< tr.number_of_vertices() << " output vertices"
<< std::endl;
@ -345,7 +351,7 @@ int main(int argc, char * argv[])
// Converts to polyhedron
Polyhedron output_mesh;
CGAL::facets_in_complex_2_to_triangle_mesh(c2t3, output_mesh);
CGAL::facets_in_complex_3_to_triangle_mesh(c3t3, output_mesh);
// Prints total reconstruction duration
std::cerr << "Total reconstruction (implicit function + meshing): " << reconstruction_timer.time() << " seconds\n";

46
Poisson_surface_reconstruction_3/examples/Poisson_surface_reconstruction_3/poisson_reconstruction_example.cpp
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@ -3,11 +3,15 @@
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/Surface_mesh_default_triangulation_3.h>
#include <CGAL/make_surface_mesh.h>
#include <CGAL/Implicit_surface_3.h>
#include <CGAL/IO/facets_in_complex_2_to_triangle_mesh.h>
#include <CGAL/Poisson_reconstruction_function.h>
#include <CGAL/Mesh_triangulation_3.h>
#include <CGAL/Mesh_complex_3_in_triangulation_3.h>
#include <CGAL/Mesh_criteria_3.h>
#include <CGAL/Labeled_mesh_domain_3.h>
#include <CGAL/make_mesh_3.h>
#include <CGAL/facets_in_complex_3_to_triangle_mesh.h>
#include <CGAL/property_map.h>
#include <CGAL/IO/read_points.h>
#include <CGAL/compute_average_spacing.h>
@ -31,9 +35,10 @@ typedef Kernel::Sphere_3 Sphere;
typedef std::vector<Point_with_normal> PointList;
typedef CGAL::Polyhedron_3<Kernel> Polyhedron;
typedef CGAL::Poisson_reconstruction_function<Kernel> Poisson_reconstruction_function;
typedef CGAL::Surface_mesh_default_triangulation_3 STr;
typedef CGAL::Surface_mesh_complex_2_in_triangulation_3<STr> C2t3;
typedef CGAL::Implicit_surface_3<Kernel, Poisson_reconstruction_function> Surface_3;
typedef CGAL::Labeled_mesh_domain_3<Kernel> Mesh_domain;
typedef CGAL::Mesh_triangulation_3<Mesh_domain>::type Tr;
typedef CGAL::Mesh_complex_3_in_triangulation_3<Tr> C3t3;
typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
int main(void)
{
@ -80,30 +85,29 @@ int main(void)
// conservative bounding sphere centered at inner point.
FT sm_sphere_radius = 5.0 * radius;
FT sm_dichotomy_error = sm_distance*average_spacing/1000.0; // Dichotomy error must be << sm_distance
Surface_3 surface(function,
Sphere(inner_point,sm_sphere_radius*sm_sphere_radius),
sm_dichotomy_error/sm_sphere_radius);
// Defines surface mesh generation criteria
CGAL::Surface_mesh_default_criteria_3<STr> criteria(sm_angle, // Min triangle angle (degrees)
sm_radius*average_spacing, // Max triangle size
sm_distance*average_spacing); // Approximation error
Mesh_criteria criteria(CGAL::parameters::facet_angle = sm_angle,
CGAL::parameters::facet_size = sm_radius*average_spacing,
CGAL::parameters::facet_distance = sm_distance*average_spacing);
// Generates surface mesh with manifold option
STr tr; // 3D Delaunay triangulation for surface mesh generation
C2t3 c2t3(tr); // 2D complex in 3D Delaunay triangulation
CGAL::make_surface_mesh(c2t3, // reconstructed mesh
surface, // implicit surface
criteria, // meshing criteria
CGAL::Manifold_with_boundary_tag()); // require manifold mesh
// Defines mesh domain
Mesh_domain domain = Mesh_domain::create_implicit_mesh_domain(function, bsphere,
CGAL::parameters::relative_error_bound(sm_dichotomy_error / sm_sphere_radius));
// Generates mesh with manifold option
C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria,
CGAL::parameters::no_exude().no_perturb()
.manifold_with_boundary());
const Tr& tr = c3t3.triangulation();
if(tr.number_of_vertices() == 0)
return EXIT_FAILURE;
// saves reconstructed surface mesh
std::ofstream out("kitten_poisson-20-30-0.375.off");
Polyhedron output_mesh;
CGAL::facets_in_complex_2_to_triangle_mesh(c2t3, output_mesh);
CGAL::facets_in_complex_3_to_triangle_mesh(c3t3, output_mesh);
out << output_mesh;