Point_set_3/point_set.cpp

#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;
 
void print_point_set (const Point_set& point_set)
{
  std::cerr << "Content of point set:" << std::endl;
  for (Point_set::const_iterator it = point_set.begin();
       it != point_set.end(); ++ it)
    std::cerr << "* Point " << *it
              << ": " << point_set.point(*it) // or point_set[it]
              << " with normal " << point_set.normal(*it)
              << std::endl;
}
 
int main (int, char**)
{
  Point_set point_set;
 
  // Add points
  point_set.insert (Point (0., 0., 0.));
  point_set.insert (Point (0., 0., 1.));
  point_set.insert (Point (0., 1., 0.));
 
  point_set.add_normal_map();
 
  print_point_set(point_set); // Normals have default values
 
  // Change normal values
  Point_set::iterator it = point_set.begin();
  point_set.normal(*(it++)) = Vector (1., 0., 0.);
  point_set.normal(*(it++)) = Vector (0., 1., 0.);
  point_set.normal(*(it++)) = Vector (0., 0., 1.);
 
  // Add point + normal
  point_set.insert (Point (1., 2., 3.), Vector (4., 5., 6.));
 
  print_point_set(point_set);
 
  // Add new item
  Point_set::iterator new_item = point_set.insert(Point (7., 8., 9.));
  point_set.normal(*new_item) = Vector (10., 11., 12.);
 
  print_point_set(point_set); // New item has default values
 
  point_set.remove (point_set.begin() + 2,
                    point_set.begin() + 4);
 
  print_point_set(point_set); // New item has default values
 
  // Display information
  std::cerr << "Number of removed points: " <<point_set.number_of_removed_points() << std::endl;
 
  point_set.collect_garbage();
 
  // Display information (garbage should be gone)
  std::cerr << "After garbage collection: " <<point_set.number_of_removed_points() << std::endl;
 
  return 0;
}