DrawArcExt(from_x, from_y, to_x2, to_y2, element, change_level);
DrawArcExt(from_x, from_y, mirror_to_x2, to_y2, element, change_level);
DrawArcExt(from_x, from_y, to_x2, mirror_to_y2, element, change_level);
DrawArcExt(from_x, from_y, to_x2, to_y2, element, change_level);
DrawArcExt(from_x, from_y, mirror_to_x2, to_y2, element, change_level);
DrawArcExt(from_x, from_y, to_x2, mirror_to_y2, element, change_level);