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#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/random_simplify_point_set.h>
#include <CGAL/IO/read_xyz_points.h>
#include <vector>
#include <fstream>
// types
typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef Kernel::Point_3 Point;
int main(void)
{
// Reads a .xyz point set file in points[].
std::vector<Point> points;
std::ifstream stream("data/oni.xyz");
if (!stream ||
!CGAL::read_xyz_points(stream, std::back_inserter(points)))
{
std::cerr << "Error: cannot read file data/oni.xyz" << std::endl;
return EXIT_FAILURE;
}
// Randomly simplifies using erase-remove idiom
const double removed_percentage = 75.0; // percentage of points to remove
points.erase(CGAL::random_simplify_point_set(points.begin(), points.end(), removed_percentage),
points.end());
// Optional: after erase(), use Scott Meyer's "swap trick" to trim excess capacity
std::vector<Point>(points).swap(points);
return EXIT_SUCCESS;
}
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