CGAL 6.2 - 3D Generalized Barycentric Coordinates: Barycentric_coordinates_3/mean_value_coordinates_3.cpp

CGAL 6.2 - 3D Generalized Barycentric Coordinates

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Barycentric_coordinates_3/mean_value_coordinates_3.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/boost/graph/generators.h>
#include <CGAL/Barycentric_coordinates_3/Mean_value_coordinates_3.h>
using Kernel = CGAL::Exact_predicates_inexact_constructions_kernel;
using Point_3 = Kernel::Point_3;
using Surface_mesh = CGAL::Surface_mesh<Point_3>;
using Computation_policy_3 = CGAL::Barycentric_coordinates::Computation_policy_3;
int main() {
Surface_mesh concave;
const Point_3 p0(0, 3, 0);
const Point_3 p1(1, 1, 0);
const Point_3 p2(3, 0, 0);
const Point_3 p3(0, 0, 0);
const Point_3 p4(0, 0, 3);
const Point_3 p5(0, 3, 3);
const Point_3 p6(1, 1, 3);
const Point_3 p7(3, 0, 3);
CGAL::make_hexahedron(p0, p1, p2, p3, p4, p5, p6, p7, concave,
CGAL::parameters::do_not_triangulate_faces(false));
std::vector<double> coords;
std::vector<Point_3> queries {
Point_3(0.5, 0.5, 1), Point_3(0.33, 0.33, 2), // Only points in the kernel
Point_3(1.33, 0.33, 1), Point_3(1.33, 0.33, 2),
Point_3(0.33, 1.33, 1), Point_3(0.33, 1.33, 2)};
std::cout << std::endl << "Mean value coordinates : " << std::endl << std::endl;
for (const auto& query : queries) {
coords.clear();
CGAL::Barycentric_coordinates::mean_value_coordinates_3(
concave, query, std::back_inserter(coords), CGAL::parameters::computation_policy(Computation_policy_3::FAST));
// Output mean value coordinates.
for (std::size_t i = 0; i < coords.size() -1; ++i)
std::cout << coords[i] << ", ";
std::cout << coords[coords.size() -1] << std::endl;
}
std::cout << std::endl;
return EXIT_SUCCESS;
}
CGAL::Exact_predicates_inexact_constructions_kernel
Kernel::Point_3
CGAL::make_hexahedron
boost::graph_traits< Graph >::halfedge_descriptor make_hexahedron(const P &p0, const P &p1, const P &p2, const P &p3, const P &p4, const P &p5, const P &p6, const P &p7, Graph &g, const NamedParameters &np=parameters::default_values())
CGAL::Barycentric_coordinates::mean_value_coordinates_3
OutputIterator mean_value_coordinates_3(const TriangleMesh &tmesh, const Point &query, OutputIterator oi, const NamedParameters &np=parameters::default_values())
computes 3D mean value barycentric coordinates with respect to a closed triangle mesh.
Definition: Mean_value_coordinates_3.h:446
CGAL::Barycentric_coordinates::Computation_policy_3
Computation_policy_3
Computation_policy_3 provides a way to choose an asymptotic time complexity of the algorithm and its ...
Definition: barycentric_enum_3.h:36
Kernel