312 lines
9.4 KiB
C++
312 lines
9.4 KiB
C++
// 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) 2008-2012 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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// Copyright (c) 2014 Samuel Debionne, Grenoble, France.
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// This file was modified by Oracle on 2014-2020.
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// Modifications copyright (c) 2014-2020 Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
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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_CROSSES_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_CROSSES_HPP
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#include <cstddef>
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#include <boost/variant/apply_visitor.hpp>
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#include <boost/variant/static_visitor.hpp>
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#include <boost/variant/variant_fwd.hpp>
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#include <boost/geometry/algorithms/relate.hpp>
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#include <boost/geometry/algorithms/detail/relate/relate_impl.hpp>
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#include <boost/geometry/core/access.hpp>
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#include <boost/geometry/geometries/concepts/check.hpp>
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#include <boost/geometry/strategies/default_strategy.hpp>
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#include <boost/geometry/strategies/detail.hpp>
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#include <boost/geometry/strategies/relate/services.hpp>
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namespace boost { namespace geometry
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{
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#ifndef DOXYGEN_NO_DISPATCH
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namespace dispatch
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{
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template
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<
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typename Geometry1,
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typename Geometry2,
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typename Tag1 = typename tag<Geometry1>::type,
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typename Tag2 = typename tag<Geometry2>::type
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>
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struct crosses
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: detail::relate::relate_impl
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<
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detail::de9im::static_mask_crosses_type,
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Geometry1,
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Geometry2
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>
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{};
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} // namespace dispatch
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#endif // DOXYGEN_NO_DISPATCH
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namespace resolve_strategy
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{
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template
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<
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typename Strategy,
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bool IsUmbrella = strategies::detail::is_umbrella_strategy<Strategy>::value
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>
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struct crosses
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{
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template <typename Geometry1, typename Geometry2>
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static inline bool apply(Geometry1 const& geometry1,
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Geometry2 const& geometry2,
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Strategy const& strategy)
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{
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concepts::check<Geometry1 const>();
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concepts::check<Geometry2 const>();
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return dispatch::crosses
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<
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Geometry1, Geometry2
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>::apply(geometry1, geometry2, strategy);
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}
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};
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template <typename Strategy>
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struct crosses<Strategy, false>
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{
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template <typename Geometry1, typename Geometry2>
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static inline bool apply(Geometry1 const& geometry1,
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Geometry2 const& geometry2,
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Strategy const& strategy)
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{
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//using strategies::crosses::services::strategy_converter;
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using strategies::relate::services::strategy_converter;
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return crosses
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<
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decltype(strategy_converter<Strategy>::get(strategy))
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>::apply(geometry1, geometry2,
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strategy_converter<Strategy>::get(strategy));
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}
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};
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template <>
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struct crosses<default_strategy, false>
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{
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template <typename Geometry1, typename Geometry2>
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static inline bool apply(Geometry1 const& geometry1,
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Geometry2 const& geometry2,
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default_strategy)
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{
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//typedef typename strategies::crosses::services::default_strategy
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typedef typename strategies::relate::services::default_strategy
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<
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Geometry1,
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Geometry2
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>::type strategy_type;
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return crosses
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<
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strategy_type
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>::apply(geometry1, geometry2, strategy_type());
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}
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};
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} // namespace resolve_strategy
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namespace resolve_variant
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{
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template <typename Geometry1, typename Geometry2>
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struct crosses
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{
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template <typename Strategy>
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static inline bool apply(Geometry1 const& geometry1,
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Geometry2 const& geometry2,
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Strategy const& strategy)
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{
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return resolve_strategy::crosses
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<
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Strategy
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>::apply(geometry1, geometry2, strategy);
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}
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};
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template <BOOST_VARIANT_ENUM_PARAMS(typename T), typename Geometry2>
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struct crosses<variant<BOOST_VARIANT_ENUM_PARAMS(T)>, Geometry2>
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{
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template <typename Strategy>
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struct visitor: static_visitor<bool>
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{
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Geometry2 const& m_geometry2;
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Strategy const& m_strategy;
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visitor(Geometry2 const& geometry2, Strategy const& strategy)
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: m_geometry2(geometry2)
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, m_strategy(strategy)
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{}
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template <typename Geometry1>
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result_type operator()(Geometry1 const& geometry1) const
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{
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return crosses
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<
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Geometry1,
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Geometry2
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>::apply(geometry1, m_geometry2, m_strategy);
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}
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};
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template <typename Strategy>
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static inline bool apply(variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry1,
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Geometry2 const& geometry2,
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Strategy const& strategy)
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{
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return boost::apply_visitor(visitor<Strategy>(geometry2, strategy), geometry1);
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}
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};
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template <typename Geometry1, BOOST_VARIANT_ENUM_PARAMS(typename T)>
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struct crosses<Geometry1, variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
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{
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template <typename Strategy>
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struct visitor: static_visitor<bool>
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{
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Geometry1 const& m_geometry1;
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Strategy const& m_strategy;
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visitor(Geometry1 const& geometry1, Strategy const& strategy)
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: m_geometry1(geometry1)
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, m_strategy(strategy)
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{}
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template <typename Geometry2>
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result_type operator()(Geometry2 const& geometry2) const
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{
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return crosses
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<
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Geometry1,
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Geometry2
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>::apply(m_geometry1, geometry2, m_strategy);
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}
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};
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template <typename Strategy>
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static inline bool apply(Geometry1 const& geometry1,
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variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry2,
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Strategy const& strategy)
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{
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return boost::apply_visitor(visitor<Strategy>(geometry1, strategy), geometry2);
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}
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};
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template <BOOST_VARIANT_ENUM_PARAMS(typename T1), BOOST_VARIANT_ENUM_PARAMS(typename T2)>
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struct crosses<variant<BOOST_VARIANT_ENUM_PARAMS(T1)>, variant<BOOST_VARIANT_ENUM_PARAMS(T2)> >
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{
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template <typename Strategy>
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struct visitor: static_visitor<bool>
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{
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Strategy const& m_strategy;
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visitor(Strategy const& strategy)
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: m_strategy(strategy)
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{}
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template <typename Geometry1, typename Geometry2>
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result_type operator()(Geometry1 const& geometry1,
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Geometry2 const& geometry2) const
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{
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return crosses
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<
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Geometry1,
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Geometry2
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>::apply(geometry1, geometry2, m_strategy);
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}
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};
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template <typename Strategy>
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static inline bool apply(variant<BOOST_VARIANT_ENUM_PARAMS(T1)> const& geometry1,
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variant<BOOST_VARIANT_ENUM_PARAMS(T2)> const& geometry2,
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Strategy const& strategy)
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{
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return boost::apply_visitor(visitor<Strategy>(strategy), geometry1, geometry2);
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}
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};
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} // namespace resolve_variant
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/*!
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\brief \brief_check2{crosses}
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\ingroup crosses
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\tparam Geometry1 \tparam_geometry
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\tparam Geometry2 \tparam_geometry
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\tparam Strategy \tparam_strategy{Crosses}
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\param geometry1 \param_geometry
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\param geometry2 \param_geometry
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\param strategy \param_strategy{crosses}
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\return \return_check2{crosses}
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\qbk{distinguish,with strategy}
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\qbk{[include reference/algorithms/crosses.qbk]}
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*/
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template <typename Geometry1, typename Geometry2, typename Strategy>
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inline bool crosses(Geometry1 const& geometry1,
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Geometry2 const& geometry2,
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Strategy const& strategy)
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{
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return resolve_variant::crosses
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<
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Geometry1, Geometry2
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>::apply(geometry1, geometry2, strategy);
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}
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/*!
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\brief \brief_check2{crosses}
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\ingroup crosses
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\tparam Geometry1 \tparam_geometry
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\tparam Geometry2 \tparam_geometry
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\param geometry1 \param_geometry
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\param geometry2 \param_geometry
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\return \return_check2{crosses}
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\qbk{[include reference/algorithms/crosses.qbk]}
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\qbk{
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[heading Examples]
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[crosses]
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[crosses_output]
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}
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*/
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template <typename Geometry1, typename Geometry2>
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inline bool crosses(Geometry1 const& geometry1, Geometry2 const& geometry2)
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{
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return resolve_variant::crosses
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<
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Geometry1, Geometry2
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>::apply(geometry1, geometry2, default_strategy());
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}
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_ALGORITHMS_CROSSES_HPP
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