示例#1
0
int main(int argc, char* argv[])
{
  // Open the input file and read a polygon.
  const char* filename = (argc > 1) ? argv[1] : "tight.dat";
  std::ifstream in_file(filename);

  if (! in_file.is_open()) {
    std::cerr << "Failed to open the input file." << std::endl;
    return -1;
  }

  // Read the input polygon.
  Linear_polygon P;
  in_file >> P;
  in_file.close();

  std::cout << "Read an input polygon with " << P.size() << " vertices."
            << std::endl;

  // Approximate the offset polygon.
  std::list<Polygon_2> inset_polygons;
  boost::timer timer;
  approximated_inset_2(P, 1, 0.00001, std::back_inserter(inset_polygons));
  double secs = timer.elapsed();

  std::list<Polygon_2>::iterator it;
  std::cout << "The inset comprises " << inset_polygons.size()
            << " polygon(s)." << std::endl;
  for (it = inset_polygons.begin(); it != inset_polygons.end(); ++it)
    std::cout << "    Polygon with " << it->size() << " vertices." << std::endl;
  std::cout << "Inset computation took " << secs << " seconds." << std::endl;
  return 0;
}
示例#2
0
int main ()
{
  // Open the input file.
  std::ifstream    in_file ("tight.dat");

  if (! in_file.is_open())
  {
    std::cerr << "Failed to open the input file." << std::endl;
    return (1);
  }

  // Read the input polygon.
  Polygon_2        P;

  in_file >> P;
  in_file.close();

  std::cout << "Read an input polygon with "
            << P.size() << " vertices." << std::endl;

  // Approximate the offset polygon.
  const Number_type                      radius = 1;
  const double                           err_bound = 0.00001;
  std::list<Offset_polygon_2>            inset_polygons;
  std::list<Offset_polygon_2>::iterator  iit;
  CGAL::Timer                            timer;

  timer.start();
  approximated_inset_2 (P, radius, err_bound,
                        std::back_inserter (inset_polygons));
  timer.stop();

  std::cout << "The inset comprises " 
            << inset_polygons.size() << " polygon(s)." << std::endl;
  for (iit = inset_polygons.begin(); iit != inset_polygons.end(); ++iit)
  {
      std::cout << "    Polygon with "
                << iit->size() << " vertices." << std::endl;
  }
  std::cout << "Inset computation took "
            << timer.time() << " seconds." << std::endl;
  return (0);
}