void GDALParceling::split_left(Point_2 & p3, Pwh_list_2 & ress, Point_2 & p2, Point_2 & p4, Point_2 & p1, Vector_2 & v1)
{
Polygon_with_holes_2 split_left;
split_left.outer_boundary().push_back(p1);
split_left.outer_boundary().push_back(p1+v1);
split_left.outer_boundary().push_back(p4+v1);
split_left.outer_boundary().push_back(p4);
ress.push_back(split_left);
//Right
Polygon_with_holes_2 split_right;
split_right.outer_boundary().push_back(p2-v1);
split_right.outer_boundary().push_back(p2);
split_right.outer_boundary().push_back(p3);
split_right.outer_boundary().push_back(p3-v1);
ress.push_back(split_right);
}
void GDALParceling::split_up(Pwh_list_2 & ress, Point_2 & p3, Point_2 & p1, Point_2 & p4, Vector_2 & v2, Point_2 & p2)
{
Polygon_with_holes_2 split_left_1;
split_left_1.outer_boundary().push_back(p1);
split_left_1.outer_boundary().push_back(p2);
split_left_1.outer_boundary().push_back(p2+v2);
split_left_1.outer_boundary().push_back(p1+v2);
ress.push_back(split_left_1);
//Right
Polygon_with_holes_2 split_right_1;
split_right_1.outer_boundary().push_back(p3-v2);
split_right_1.outer_boundary().push_back(p3);
split_right_1.outer_boundary().push_back(p4);
split_right_1.outer_boundary().push_back(p4-v2);
ress.push_back(split_right_1);
}
void
arrangement::admissible_configuration(Op2_it pgn, std::vector<Offset_polygon_with_holes_2> &off,Pwh_list_2 &adm)
{
Offset_polygon_with_holes_2 poly(*pgn);
std::vector<Offset_polygon_with_holes_2> polys;
polys.push_back(poly);
for (int i =0; i< (int) polys.size(); ++i)
if (polys[i].outer_boundary().orientation() == -1)
polys[i].outer_boundary().reverse_orientation();
for (int i =0; i< (int)polys.size(); ++i)
{
int before;
bool flag = false;
for (int k = 0; k < (int)off.size(); ++k)
{
if (off[k].outer_boundary().orientation() == -1)
off[k].outer_boundary().reverse_orientation();
if (CGAL::do_intersect(polys[i], off[k]))
{
flag = true;
before = (int) adm.size();
CGAL::difference(polys[i], off[k],std::back_inserter(adm));
polys.pop_back();
int cpt_tmp = (int)adm.size();
for (int j = before; j < cpt_tmp; ++j)
{
polys.push_back(adm.back());
adm.pop_back();
}
}
}
if (flag)
--i;
}
for (int k = 0; k < (int)polys.size(); ++k)
adm.push_back(polys[k]);
}