// Boost.Geometry (aka GGL, Generic Geometry Library) // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. // This file was modified by Oracle on 2018-2020. // Modifications copyright (c) 2018-2020, Oracle and/or its affiliates. // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle // Use, modification and distribution is subject to the Boost Software License, // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_CONVERT_RING_HPP #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_CONVERT_RING_HPP #include #include #include #include #include #include #include namespace boost { namespace geometry { #ifndef DOXYGEN_NO_DETAIL namespace detail { namespace overlay { template struct convert_ring { BOOST_GEOMETRY_STATIC_ASSERT_FALSE( "Not or not yet implemented for this geometry Tag.", Tag); }; template<> struct convert_ring { template static inline void apply(Destination& destination, Source const& source, bool append, bool reverse) { if (! append) { geometry::convert(source, destination); if (reverse) { boost::reverse(destination); } } } }; template<> struct convert_ring { template static inline void apply(Destination& destination, Source const& source, bool append, bool reverse) { if (! append) { geometry::convert(source, exterior_ring(destination)); if (reverse) { boost::reverse(exterior_ring(destination)); } } else { // Avoid adding interior rings which are invalid // because of its number of points: std::size_t const min_num_points = core_detail::closure::minimum_ring_size < geometry::closure::value >::value; if (geometry::num_points(source) >= min_num_points) { // TODO: resize and .size() and .back() should not be called here interior_rings(destination).resize( interior_rings(destination).size() + 1); geometry::convert(source, interior_rings(destination).back()); if (reverse) { boost::reverse(interior_rings(destination).back()); } } } } }; }} // namespace detail::overlay #endif // DOXYGEN_NO_DETAIL }} // namespace boost::geometry #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_CONVERT_RING_HPP