CGAL 5.3 - 2D Movable Separability of Sets
Set_movable_separability_2/is_pullout_direction_single_mold_trans_cast.cpp
#include <fstream>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Set_movable_separability_2/Single_mold_translational_casting/is_pullout_direction.h>
typedef Kernel::Vector_2 Vector_2;
typedef Kernel::Point_2 Point_2;
typedef Kernel::Direction_2 Direction_2;
typedef CGAL::Polygon_2<Kernel> Polygon_2;
namespace casting = SMS::Single_mold_translational_casting;
// The main program:
int main(int argc, char* argv[])
{
Polygon_2 polygon;
const char* filename = (argc > 1) ? argv[1] : "polygon.dat";
std::ifstream input_file(filename);
if (! input_file.is_open()) {
std::cerr << "Failed to open the " << filename << std::endl;
return -1;
}
input_file >> polygon;
input_file.close();
// Example for is_pullout_direction_single_mold_translational_casting_2 that
// accepts the edge
size_t index(0);
for (auto e_it = polygon.edges_begin(); e_it != polygon.edges_end(); ++e_it,
++index)
{
auto orientation = polygon.orientation();
auto segment_outer_circle =
SMS::internal::get_segment_outer_circle<Kernel>(*e_it, orientation);
auto d = segment_outer_circle.first;
d = d.perpendicular(CGAL::CLOCKWISE);
auto res = casting::is_pullout_direction(polygon, e_it, d);
std::cout << "The polygon is " << (res ? "" : "not ")
<< "castable using edge "
<< index << " in vartical translation (" << d << ")" << std::endl;
}
std::cout << "-----------------------------------"<< std::endl;
// Example for is_pullout_direction_single_mold_translational_casting_2 that
// do not accepts the edge
{
Vector_2 v (Point_2(0,0), Point_2(1,0));
Direction_2 d(v);
auto res = casting::is_pullout_direction(polygon, d);
if (res != polygon.edges_end()) {
std::cout << "The polygon is castable in direction d (" << d
<< ") using edge "<< *res << std::endl;
}
else {
std::cout << "The polygon is not castable in direction d (" << d << ")"
<< std::endl;
}
}
return 0;
}