// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2013 Adam Wulkiewicz, Lodz, Poland
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// This file was modified by Oracle on 2020.
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// Modifications copyright (c) 2020 Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_DO_REVERSE_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_DO_REVERSE_HPP
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#include <boost/geometry/core/point_order.hpp>
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namespace boost { namespace geometry
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{
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#ifndef DOXYGEN_NO_DETAIL
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namespace detail { namespace overlay
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{
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// Metafunction helper for intersection and union
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template <order_selector Selector, bool Reverse = false>
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struct do_reverse {};
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template <>
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struct do_reverse<clockwise, false> : std::false_type {};
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template <>
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struct do_reverse<clockwise, true> : std::true_type {};
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template <>
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struct do_reverse<counterclockwise, false> : std::true_type {};
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template <>
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struct do_reverse<counterclockwise, true> : std::false_type {};
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}} // namespace detail::overlay
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#endif // DOXYGEN_NO_DETAIL
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_DO_REVERSE_HPP
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