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#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Point_set_3.h>
#include <fstream>
#include <limits>
typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef Kernel::FT FT;
typedef Kernel::Point_3 Point;
typedef Kernel::Vector_3 Vector;
typedef CGAL::Point_set_3<Point> Point_set;
int main (int argc, char** argv)
{
const std::string fname = argc > 1 ? argv[1] : CGAL::data_file_path("points_3/oni.pwn");
// Reading input
Point_set point_set;
if(!CGAL::IO::read_XYZ(fname, point_set))
{
std::cerr << "Can't read input file " << std::endl;
return EXIT_FAILURE;
}
if (point_set.has_normal_map())
{
// Normalization + inversion of normal vectors
for (Point_set::iterator it = point_set.begin(); it != point_set.end(); ++ it)
{
Vector n = point_set.normal(*it);
n = - n / std::sqrt (n * n);
point_set.normal(*it) = n;
}
}
// Writing result in OFF format
if(!CGAL::IO::write_OFF("normalized_normals.off", point_set, CGAL::parameters::stream_precision(17)))
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
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