diff options
Diffstat (limited to 'boost/geometry/algorithms/detail/within/interface.hpp')
| -rw-r--r-- | boost/geometry/algorithms/detail/within/interface.hpp | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/boost/geometry/algorithms/detail/within/interface.hpp b/boost/geometry/algorithms/detail/within/interface.hpp new file mode 100644 index 0000000000..23263604c2 --- /dev/null +++ b/boost/geometry/algorithms/detail/within/interface.hpp @@ -0,0 +1,304 @@ +// 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. +// Modifications copyright (c) 2013-2017 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 + < + typename tag<Geometry1>::type, + typename tag<Geometry2>::type, + typename tag_cast<typename tag<Geometry2>::type, areal_tag>::type, + 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 |