CGAL 5.6.3 - 3D Triangulations

Loading...
Searching...
No Matches
Triangulation_3/parallel_insertion_and_removal_in_regular_3.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Regular_triangulation_3.h>
#include <CGAL/point_generators_3.h>
#include <iostream>
#include <fstream>
#include <vector>
int main()
{
#ifdef CGAL_LINKED_WITH_TBB
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
// Regular T3
typedef CGAL::Triangulation_data_structure_3<
CGAL::Regular_triangulation_vertex_base_3<K>,
CGAL::Regular_triangulation_cell_base_3<K>,
CGAL::Parallel_tag> Tds;
typedef CGAL::Regular_triangulation_3<K, Tds> Rt;
typedef Rt::Bare_point Bare_point;
typedef Rt::Weighted_point Weighted_point;
typedef Rt::Vertex_handle Vertex_handle;
const int NUM_INSERTED_POINTS = 5000;
CGAL::Random_points_in_cube_3<Bare_point> rnd(1.);
// Construction from a vector of 1,000,000 points
std::vector<Weighted_point> V;
V.reserve(NUM_INSERTED_POINTS);
for (int i = 0; i != NUM_INSERTED_POINTS; ++i)
V.push_back(Weighted_point(*rnd++));
// Construct the locking data-structure, using the bounding-box of the points
Rt::Lock_data_structure locking_ds(
CGAL::Bbox_3(-1., -1., -1., 1., 1., 1.), 50);
// Construct the triangulation in parallel
std::cerr << "Construction and insertion" << std::endl;
Rt rtr(V.begin(), V.end(), &locking_ds);
assert(rtr.is_valid());
std::cerr << "Remove" << std::endl;
// Remove the first 1/10 vertices
std::vector<Vertex_handle> vertices_to_remove;
Rt::Finite_vertices_iterator vit = rtr.finite_vertices_begin();
for (int i = 0 ; i < NUM_INSERTED_POINTS/10 ; ++i)
vertices_to_remove.push_back(vit++);
// Parallel remove
rtr.remove(vertices_to_remove.begin(), vertices_to_remove.end());
assert(rtr.is_valid());
#endif //CGAL_LINKED_WITH_TBB
return 0;
}
CGAL::Bbox_3
CGAL::Exact_predicates_inexact_constructions_kernel
CGAL::Regular_triangulation_3
Let be a set of weighted points in .
Definition: Regular_triangulation_3.h:60
CGAL::Regular_triangulation_cell_base_3
The class Regular_triangulation_cell_base_with_weighted_circumcenter_3 derives from Cb,...
Definition: Regular_triangulation_cell_base_3.h:29
CGAL::Regular_triangulation_vertex_base_3
The class Regular_triangulation_vertex_base_3 is a model of the concept RegularTriangulationVertexBas...
Definition: Regular_triangulation_vertex_base_3.h:35
CGAL::Triangulation_data_structure_3
CGAL::Parallel_tag