C++ (Cpp) MultiPolygon::clear Examples

Example #1

File: intersection_pies.cpp Project: LancelotGHX/Simula

inline void holify_multi(MultiPolygon& multi_polygon)
{
    typedef typename bg::point_type<MultiPolygon>::type point_type;

    typename boost::range_value<MultiPolygon>::type p;

    bg::exterior_ring(p).push_back(bg::make<point_type>(0, 0));
    bg::exterior_ring(p).push_back(bg::make<point_type>(0, 5000));
    bg::exterior_ring(p).push_back(bg::make<point_type>(5000, 5000));
    bg::exterior_ring(p).push_back(bg::make<point_type>(5000, 0));
    bg::exterior_ring(p).push_back(bg::make<point_type>(0, 0));

    for (int i = 0; i < multi_polygon.size(); i++)
    {
        bg::interior_rings(p).push_back(bg::exterior_ring(multi_polygon[i]));
    }

    bg::correct(p);

    multi_polygon.clear();
    multi_polygon.push_back(p);
}