Polygon_2 CollisionDetector::translate_polygon_to(const Polygon_2& poly, const Point_2& new_ref_pt) const
{
m_translate_helper.resize(0);
const Point_2 &ref = *poly.left_vertex();
std::pair<double,double> diff(
//Vector_2 diff(
CGAL::to_double(ref.x().exact()) - CGAL::to_double(new_ref_pt.x().exact()),
CGAL::to_double(ref.y().exact()) - CGAL::to_double(new_ref_pt.y().exact())
);
for (Polygon_2::Vertex_const_iterator it = poly.vertices_begin(), it_end = poly.vertices_end(); it != it_end; ++it)
{
m_translate_helper.push_back( Point_2(CGAL::to_double(it->x()) + diff.first, CGAL::to_double(it->y()) + diff.second ) );
//translated.push_back( (*it) + diff );
}
Polygon_2 new_poly(m_translate_helper.begin(),m_translate_helper.end());
return new_poly;
}
