1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Extreme_points_traits_adapter_3.h>
#include <CGAL/convex_hull_3.h>
#include <vector>
#include <fstream>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef K::Point_3 Point_3;
typedef CGAL::Surface_mesh<Point_3> Mesh;
int main(int argc, char* argv[])
{
const std::string filename = (argc>1) ? argv[1] : CGAL::data_file_path("meshes/star.off");
Mesh sm;
if(!CGAL::IO::read_polygon_mesh(filename, sm))
{
std::cerr<< "Cannot open input file." <<std::endl;
return 1;
}
//This will contain the extreme vertices
std::vector<Mesh::Vertex_index> extreme_vertices;
//call the function with the traits adapter for vertices
CGAL::extreme_points_3(vertices(sm), std::back_inserter(extreme_vertices),
CGAL::make_extreme_points_traits_adapter(sm.points()));
//print the number of extreme vertices
std::cout << "There are " << extreme_vertices.size() << " extreme vertices in this mesh." << std::endl;
return 0;
}
|
