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- // Boost.Geometry (aka GGL, Generic Geometry Library)
- // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
- // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
- // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
- // This file was modified by Oracle on 2013, 2014, 2017, 2018.
- // Modifications copyright (c) 2013-2018 Oracle and/or its affiliates.
- // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
- // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
- // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
- // 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_WITHIN_INTERFACE_HPP
- #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_WITHIN_INTERFACE_HPP
- #include <boost/concept_check.hpp>
- #include <boost/variant/apply_visitor.hpp>
- #include <boost/variant/static_visitor.hpp>
- #include <boost/variant/variant_fwd.hpp>
- #include <boost/geometry/algorithms/not_implemented.hpp>
- #include <boost/geometry/core/tag.hpp>
- #include <boost/geometry/core/tag_cast.hpp>
- #include <boost/geometry/geometries/concepts/check.hpp>
- #include <boost/geometry/strategies/concepts/within_concept.hpp>
- #include <boost/geometry/strategies/default_strategy.hpp>
- #include <boost/geometry/strategies/within.hpp>
- namespace boost { namespace geometry
- {
- #ifndef DOXYGEN_NO_DISPATCH
- namespace dispatch
- {
- template
- <
- typename Geometry1,
- typename Geometry2,
- typename Tag1 = typename tag<Geometry1>::type,
- typename Tag2 = typename tag<Geometry2>::type
- >
- struct within
- : not_implemented<Tag1, Tag2>
- {};
- } // namespace dispatch
- #endif // DOXYGEN_NO_DISPATCH
- namespace resolve_strategy
- {
- struct within
- {
- template <typename Geometry1, typename Geometry2, typename Strategy>
- static inline bool apply(Geometry1 const& geometry1,
- Geometry2 const& geometry2,
- Strategy const& strategy)
- {
- concepts::within::check<Geometry1, Geometry2, Strategy>();
- return dispatch::within<Geometry1, Geometry2>::apply(geometry1, geometry2, strategy);
- }
- template <typename Geometry1, typename Geometry2>
- static inline bool apply(Geometry1 const& geometry1,
- Geometry2 const& geometry2,
- default_strategy)
- {
- typedef typename strategy::within::services::default_strategy
- <
- Geometry1,
- Geometry2
- >::type strategy_type;
- return apply(geometry1, geometry2, strategy_type());
- }
- };
- } // namespace resolve_strategy
- namespace resolve_variant
- {
- template <typename Geometry1, typename Geometry2>
- struct within
- {
- template <typename Strategy>
- static inline bool apply(Geometry1 const& geometry1,
- Geometry2 const& geometry2,
- Strategy const& strategy)
- {
- concepts::check<Geometry1 const>();
- concepts::check<Geometry2 const>();
- assert_dimension_equal<Geometry1, Geometry2>();
- return resolve_strategy::within::apply(geometry1,
- geometry2,
- strategy);
- }
- };
- template <BOOST_VARIANT_ENUM_PARAMS(typename T), typename Geometry2>
- struct within<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)>, Geometry2>
- {
- template <typename Strategy>
- struct visitor: boost::static_visitor<bool>
- {
- Geometry2 const& m_geometry2;
- Strategy const& m_strategy;
- visitor(Geometry2 const& geometry2, Strategy const& strategy)
- : m_geometry2(geometry2)
- , m_strategy(strategy)
- {}
- template <typename Geometry1>
- bool operator()(Geometry1 const& geometry1) const
- {
- return within<Geometry1, Geometry2>::apply(geometry1,
- m_geometry2,
- m_strategy);
- }
- };
- template <typename Strategy>
- static inline bool
- apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry1,
- Geometry2 const& geometry2,
- Strategy const& strategy)
- {
- return boost::apply_visitor(visitor<Strategy>(geometry2, strategy),
- geometry1);
- }
- };
- template <typename Geometry1, BOOST_VARIANT_ENUM_PARAMS(typename T)>
- struct within<Geometry1, boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
- {
- template <typename Strategy>
- struct visitor: boost::static_visitor<bool>
- {
- Geometry1 const& m_geometry1;
- Strategy const& m_strategy;
- visitor(Geometry1 const& geometry1, Strategy const& strategy)
- : m_geometry1(geometry1)
- , m_strategy(strategy)
- {}
- template <typename Geometry2>
- bool operator()(Geometry2 const& geometry2) const
- {
- return within<Geometry1, Geometry2>::apply(m_geometry1,
- geometry2,
- m_strategy);
- }
- };
- template <typename Strategy>
- static inline bool
- apply(Geometry1 const& geometry1,
- boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry2,
- Strategy const& strategy)
- {
- return boost::apply_visitor(visitor<Strategy>(geometry1, strategy),
- geometry2
- );
- }
- };
- template <
- BOOST_VARIANT_ENUM_PARAMS(typename T1),
- BOOST_VARIANT_ENUM_PARAMS(typename T2)
- >
- struct within<
- boost::variant<BOOST_VARIANT_ENUM_PARAMS(T1)>,
- boost::variant<BOOST_VARIANT_ENUM_PARAMS(T2)>
- >
- {
- template <typename Strategy>
- struct visitor: boost::static_visitor<bool>
- {
- Strategy const& m_strategy;
- visitor(Strategy const& strategy): m_strategy(strategy) {}
- template <typename Geometry1, typename Geometry2>
- bool operator()(Geometry1 const& geometry1,
- Geometry2 const& geometry2) const
- {
- return within<Geometry1, Geometry2>::apply(geometry1,
- geometry2,
- m_strategy);
- }
- };
- template <typename Strategy>
- static inline bool
- apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T1)> const& geometry1,
- boost::variant<BOOST_VARIANT_ENUM_PARAMS(T2)> const& geometry2,
- Strategy const& strategy)
- {
- return boost::apply_visitor(visitor<Strategy>(strategy),
- geometry1,
- geometry2);
- }
- };
- }
- /*!
- \brief \brief_check12{is completely inside}
- \ingroup within
- \details \details_check12{within, is completely inside}.
- \tparam Geometry1 \tparam_geometry
- \tparam Geometry2 \tparam_geometry
- \param geometry1 \param_geometry which might be within the second geometry
- \param geometry2 \param_geometry which might contain the first geometry
- \return true if geometry1 is completely contained within geometry2,
- else false
- \note The default strategy is used for within detection
- \qbk{[include reference/algorithms/within.qbk]}
- \qbk{
- [heading Example]
- [within]
- [within_output]
- }
- */
- template<typename Geometry1, typename Geometry2>
- inline bool within(Geometry1 const& geometry1, Geometry2 const& geometry2)
- {
- return resolve_variant::within
- <
- Geometry1,
- Geometry2
- >::apply(geometry1, geometry2, default_strategy());
- }
- /*!
- \brief \brief_check12{is completely inside} \brief_strategy
- \ingroup within
- \details \details_check12{within, is completely inside}, \brief_strategy. \details_strategy_reasons
- \tparam Geometry1 \tparam_geometry
- \tparam Geometry2 \tparam_geometry
- \param geometry1 \param_geometry which might be within the second geometry
- \param geometry2 \param_geometry which might contain the first geometry
- \param strategy strategy to be used
- \return true if geometry1 is completely contained within geometry2,
- else false
- \qbk{distinguish,with strategy}
- \qbk{[include reference/algorithms/within.qbk]}
- \qbk{
- [heading Available Strategies]
- \* [link geometry.reference.strategies.strategy_within_winding Winding (coordinate system agnostic)]
- \* [link geometry.reference.strategies.strategy_within_franklin Franklin (cartesian)]
- \* [link geometry.reference.strategies.strategy_within_crossings_multiply Crossings Multiply (cartesian)]
- [heading Example]
- [within_strategy]
- [within_strategy_output]
- }
- */
- template<typename Geometry1, typename Geometry2, typename Strategy>
- inline bool within(Geometry1 const& geometry1,
- Geometry2 const& geometry2,
- Strategy const& strategy)
- {
- return resolve_variant::within
- <
- Geometry1,
- Geometry2
- >::apply(geometry1, geometry2, strategy);
- }
- }} // namespace boost::geometry
- #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_WITHIN_INTERFACE_HPP
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