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// Boost.Geometry (aka GGL, Generic Geometry Library) // Copyright (c) 2017-2017 Barend Gehrels, Amsterdam, the Netherlands. // Copyright (c) 2017 Adam Wulkiewicz, Lodz, Poland. // 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_IS_SELF_TURN_HPP #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_IS_SELF_TURN_HPP #include <boost/geometry/algorithms/detail/overlay/overlay_type.hpp> namespace boost { namespace geometry { #ifndef DOXYGEN_NO_DETAIL namespace detail { namespace overlay { template <overlay_type OverlayType> struct is_self_turn_check { template <typename Turn> static inline bool apply(Turn const& turn) { return turn.operations[0].seg_id.source_index == turn.operations[1].seg_id.source_index; } }; template <> struct is_self_turn_check<overlay_buffer> { template <typename Turn> static inline bool apply(Turn const& /*turn*/) { return false; } }; template <> struct is_self_turn_check<overlay_dissolve> { template <typename Turn> static inline bool apply(Turn const& /*turn*/) { return false; } }; template <overlay_type OverlayType, typename Turn> bool is_self_turn(Turn const& turn) { return is_self_turn_check<OverlayType>::apply(turn); } }} // namespace detail::overlay #endif // DOXYGEN_NO_DETAIL }} // namespace boost::geometry #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_IS_SELF_TURN_HPP
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