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Diffstat (limited to 'boost/geometry/algorithms/detail/relation/interface.hpp')
| -rw-r--r-- | boost/geometry/algorithms/detail/relation/interface.hpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/boost/geometry/algorithms/detail/relation/interface.hpp b/boost/geometry/algorithms/detail/relation/interface.hpp new file mode 100644 index 0000000000..73737cf2c2 --- /dev/null +++ b/boost/geometry/algorithms/detail/relation/interface.hpp @@ -0,0 +1,186 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands. + +// This file was modified by Oracle on 2013, 2014, 2015. +// Modifications copyright (c) 2013-2015 Oracle and/or its affiliates. + +// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle + +// 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_RELATION_INTERFACE_HPP +#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_RELATION_INTERFACE_HPP + + +#include <boost/geometry/algorithms/detail/relate/interface.hpp> + + +namespace boost { namespace geometry +{ + +#ifndef DOXYGEN_NO_DETAIL +namespace detail { namespace relate +{ + +template <typename Geometry1, typename Geometry2> +struct result_handler_type<Geometry1, Geometry2, geometry::de9im::matrix, false> +{ + typedef matrix_handler<geometry::de9im::matrix> type; +}; + + +}} // namespace detail::relate +#endif // DOXYGEN_NO_DETAIL + + +namespace resolve_variant +{ + +template <typename Geometry1, typename Geometry2> +struct relation +{ + template <typename Matrix> + static inline Matrix apply(Geometry1 const& geometry1, + Geometry2 const& geometry2) + { + concept::check<Geometry1 const>(); + concept::check<Geometry2 const>(); + assert_dimension_equal<Geometry1, Geometry2>(); + + typename detail::relate::result_handler_type + < + Geometry1, + Geometry2, + Matrix + >::type handler; + + dispatch::relate + < + Geometry1, + Geometry2 + >::apply(geometry1, geometry2, handler); + + return handler.result(); + } +}; + +template <BOOST_VARIANT_ENUM_PARAMS(typename T), typename Geometry2> +struct relation<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)>, Geometry2> +{ + template <typename Matrix> + struct visitor : boost::static_visitor<Matrix> + { + Geometry2 const& m_geometry2; + + visitor(Geometry2 const& geometry2) + : m_geometry2(geometry2) {} + + template <typename Geometry1> + Matrix operator()(Geometry1 const& geometry1) const + { + return relation<Geometry1, Geometry2> + ::template apply<Matrix>(geometry1, m_geometry2); + } + }; + + template <typename Matrix> + static inline Matrix + apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry1, + Geometry2 const& geometry2) + { + return boost::apply_visitor(visitor<Matrix>(geometry2), geometry1); + } +}; + +template <typename Geometry1, BOOST_VARIANT_ENUM_PARAMS(typename T)> +struct relation<Geometry1, boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> > +{ + template <typename Matrix> + struct visitor : boost::static_visitor<Matrix> + { + Geometry1 const& m_geometry1; + + visitor(Geometry1 const& geometry1) + : m_geometry1(geometry1) {} + + template <typename Geometry2> + Matrix operator()(Geometry2 const& geometry2) const + { + return relation<Geometry1, Geometry2> + ::template apply<Matrix>(m_geometry1, geometry2); + } + }; + + template <typename Matrix> + static inline Matrix + apply(Geometry1 const& geometry1, + boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry2) + { + return boost::apply_visitor(visitor<Matrix>(geometry1), geometry2); + } +}; + +template +< + BOOST_VARIANT_ENUM_PARAMS(typename T1), + BOOST_VARIANT_ENUM_PARAMS(typename T2) +> +struct relation + < + boost::variant<BOOST_VARIANT_ENUM_PARAMS(T1)>, + boost::variant<BOOST_VARIANT_ENUM_PARAMS(T2)> + > +{ + template <typename Matrix> + struct visitor : boost::static_visitor<Matrix> + { + template <typename Geometry1, typename Geometry2> + Matrix operator()(Geometry1 const& geometry1, + Geometry2 const& geometry2) const + { + return relation<Geometry1, Geometry2> + ::template apply<Matrix>(geometry1, geometry2); + } + }; + + template <typename Matrix> + static inline Matrix + apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T1)> const& geometry1, + boost::variant<BOOST_VARIANT_ENUM_PARAMS(T2)> const& geometry2) + { + return boost::apply_visitor(visitor<Matrix>(), geometry1, geometry2); + } +}; + +} // namespace resolve_variant + + +/*! +\brief Calculates the relation between a pair of geometries as defined in DE-9IM. +\ingroup relation +\tparam Geometry1 \tparam_geometry +\tparam Geometry2 \tparam_geometry +\param geometry1 \param_geometry +\param geometry2 \param_geometry +\return The DE-9IM matrix expressing the relation between geometries. + +\qbk{[include reference/algorithms/relation.qbk]} + */ +template <typename Geometry1, typename Geometry2> +inline de9im::matrix relation(Geometry1 const& geometry1, + Geometry2 const& geometry2) +{ + return resolve_variant::relation + < + Geometry1, + Geometry2 + >::template apply<de9im::matrix>(geometry1, geometry2); +} + + +}} // namespace boost::geometry + +#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_RELATE_INTERFACE_HPP |