#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/pca_estimate_normals.h>
#include <CGAL/mst_orient_normals.h>
#include <CGAL/property_map.h>
#include <CGAL/IO/read_xyz_points.h>
#include <utility>
#include <list>
#include <fstream>
typedef std::pair<Point, Vector> PointVectorPair;
#ifdef CGAL_LINKED_WITH_TBB
#else
#endif
int main(int argc, char*argv[])
{
const char* fname = (argc>1)?argv[1]:"data/sphere_1k.xyz";
std::list<PointVectorPair> points;
std::ifstream stream(fname);
if (!stream ||
std::back_inserter(points),
{
std::cerr << "Error: cannot read file " << fname<< std::endl;
return EXIT_FAILURE;
}
const int nb_neighbors = 18;
CGAL::pca_estimate_normals<Concurrency_tag>
(points, nb_neighbors,
std::list<PointVectorPair>::iterator unoriented_points_begin =
points.erase(unoriented_points_begin, points.end());
return EXIT_SUCCESS;
}