| // Boost.Geometry (aka GGL, Generic Geometry Library) |
| |
| // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. |
| |
| // This file was modified by Oracle on 2014. |
| // Modifications copyright (c) 2014, 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_INTERSECTION_INTERFACE_HPP |
| #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTION_INTERFACE_HPP |
| |
| |
| // TODO: those headers probably may be removed |
| #include <boost/geometry/core/coordinate_dimension.hpp> |
| #include <boost/geometry/algorithms/intersects.hpp> |
| |
| #include <boost/geometry/algorithms/detail/overlay/intersection_insert.hpp> |
| #include <boost/geometry/policies/robustness/get_rescale_policy.hpp> |
| |
| |
| namespace boost { namespace geometry |
| { |
| |
| |
| #ifndef DOXYGEN_NO_DISPATCH |
| namespace dispatch |
| { |
| |
| // By default, all is forwarded to the intersection_insert-dispatcher |
| template |
| < |
| typename Geometry1, typename Geometry2, |
| typename Tag1 = typename geometry::tag<Geometry1>::type, |
| typename Tag2 = typename geometry::tag<Geometry2>::type, |
| bool Reverse = reverse_dispatch<Geometry1, Geometry2>::type::value |
| > |
| struct intersection |
| { |
| template <typename RobustPolicy, typename GeometryOut, typename Strategy> |
| static inline bool apply(Geometry1 const& geometry1, |
| Geometry2 const& geometry2, |
| RobustPolicy const& robust_policy, |
| GeometryOut& geometry_out, |
| Strategy const& strategy) |
| { |
| typedef typename boost::range_value<GeometryOut>::type OneOut; |
| |
| intersection_insert |
| < |
| Geometry1, Geometry2, OneOut, |
| overlay_intersection |
| >::apply(geometry1, geometry2, robust_policy, std::back_inserter(geometry_out), strategy); |
| |
| return true; |
| } |
| |
| }; |
| |
| |
| // If reversal is needed, perform it |
| template |
| < |
| typename Geometry1, typename Geometry2, |
| typename Tag1, typename Tag2 |
| > |
| struct intersection |
| < |
| Geometry1, Geometry2, |
| Tag1, Tag2, |
| true |
| > |
| : intersection<Geometry2, Geometry1, Tag2, Tag1, false> |
| { |
| template <typename RobustPolicy, typename GeometryOut, typename Strategy> |
| static inline bool apply( |
| Geometry1 const& g1, |
| Geometry2 const& g2, |
| RobustPolicy const& robust_policy, |
| GeometryOut& out, |
| Strategy const& strategy) |
| { |
| return intersection< |
| Geometry2, Geometry1, |
| Tag2, Tag1, |
| false |
| >::apply(g2, g1, robust_policy, out, strategy); |
| } |
| }; |
| |
| |
| } // namespace dispatch |
| #endif // DOXYGEN_NO_DISPATCH |
| |
| |
| namespace resolve_variant |
| { |
| |
| template <typename Geometry1, typename Geometry2> |
| struct intersection |
| { |
| template <typename GeometryOut> |
| static inline bool |
| apply( |
| const Geometry1& geometry1, |
| const Geometry2& geometry2, |
| GeometryOut& geometry_out) |
| { |
| concept::check<Geometry1 const>(); |
| concept::check<Geometry2 const>(); |
| |
| typedef typename geometry::rescale_overlay_policy_type |
| < |
| Geometry1, |
| Geometry2 |
| >::type rescale_policy_type; |
| |
| rescale_policy_type robust_policy |
| = geometry::get_rescale_policy<rescale_policy_type>(geometry1, geometry2); |
| |
| typedef strategy_intersection |
| < |
| typename cs_tag<Geometry1>::type, |
| Geometry1, |
| Geometry2, |
| typename geometry::point_type<Geometry1>::type, |
| rescale_policy_type |
| > strategy; |
| |
| return dispatch::intersection |
| < |
| Geometry1, |
| Geometry2 |
| >::apply(geometry1, geometry2, robust_policy, geometry_out, strategy()); |
| } |
| }; |
| |
| |
| template <BOOST_VARIANT_ENUM_PARAMS(typename T), typename Geometry2> |
| struct intersection<variant<BOOST_VARIANT_ENUM_PARAMS(T)>, Geometry2> |
| { |
| template <typename GeometryOut> |
| struct visitor: static_visitor<bool> |
| { |
| Geometry2 const& m_geometry2; |
| GeometryOut& m_geometry_out; |
| |
| visitor(Geometry2 const& geometry2, |
| GeometryOut& geometry_out) |
| : m_geometry2(geometry2), |
| m_geometry_out(geometry_out) |
| {} |
| |
| template <typename Geometry1> |
| result_type operator()(Geometry1 const& geometry1) const |
| { |
| return intersection |
| < |
| Geometry1, |
| Geometry2 |
| >::template apply |
| < |
| GeometryOut |
| > |
| (geometry1, m_geometry2, m_geometry_out); |
| } |
| }; |
| |
| template <typename GeometryOut> |
| static inline bool |
| apply(variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry1, |
| Geometry2 const& geometry2, |
| GeometryOut& geometry_out) |
| { |
| return apply_visitor(visitor<GeometryOut>(geometry2, geometry_out), geometry1); |
| } |
| }; |
| |
| |
| template <typename Geometry1, BOOST_VARIANT_ENUM_PARAMS(typename T)> |
| struct intersection<Geometry1, variant<BOOST_VARIANT_ENUM_PARAMS(T)> > |
| { |
| template <typename GeometryOut> |
| struct visitor: static_visitor<bool> |
| { |
| Geometry1 const& m_geometry1; |
| GeometryOut& m_geometry_out; |
| |
| visitor(Geometry1 const& geometry1, |
| GeometryOut& geometry_out) |
| : m_geometry1(geometry1), |
| m_geometry_out(geometry_out) |
| {} |
| |
| template <typename Geometry2> |
| result_type operator()(Geometry2 const& geometry2) const |
| { |
| return intersection |
| < |
| Geometry1, |
| Geometry2 |
| >::template apply |
| < |
| GeometryOut |
| > |
| (m_geometry1, geometry2, m_geometry_out); |
| } |
| }; |
| |
| template <typename GeometryOut> |
| static inline bool |
| apply( |
| Geometry1 const& geometry1, |
| const variant<BOOST_VARIANT_ENUM_PARAMS(T)>& geometry2, |
| GeometryOut& geometry_out) |
| { |
| return apply_visitor(visitor<GeometryOut>(geometry1, geometry_out), geometry2); |
| } |
| }; |
| |
| |
| template <BOOST_VARIANT_ENUM_PARAMS(typename T1), BOOST_VARIANT_ENUM_PARAMS(typename T2)> |
| struct intersection<variant<BOOST_VARIANT_ENUM_PARAMS(T1)>, variant<BOOST_VARIANT_ENUM_PARAMS(T2)> > |
| { |
| template <typename GeometryOut> |
| struct visitor: static_visitor<bool> |
| { |
| GeometryOut& m_geometry_out; |
| |
| visitor(GeometryOut& geometry_out) |
| : m_geometry_out(geometry_out) |
| {} |
| |
| template <typename Geometry1, typename Geometry2> |
| result_type operator()( |
| Geometry1 const& geometry1, |
| Geometry2 const& geometry2) const |
| { |
| return intersection |
| < |
| Geometry1, |
| Geometry2 |
| >::template apply |
| < |
| GeometryOut |
| > |
| (geometry1, geometry2, m_geometry_out); |
| } |
| }; |
| |
| template <typename GeometryOut> |
| static inline bool |
| apply( |
| const variant<BOOST_VARIANT_ENUM_PARAMS(T1)>& geometry1, |
| const variant<BOOST_VARIANT_ENUM_PARAMS(T2)>& geometry2, |
| GeometryOut& geometry_out) |
| { |
| return apply_visitor(visitor<GeometryOut>(geometry_out), geometry1, geometry2); |
| } |
| }; |
| |
| } // namespace resolve_variant |
| |
| |
| /*! |
| \brief \brief_calc2{intersection} |
| \ingroup intersection |
| \details \details_calc2{intersection, spatial set theoretic intersection}. |
| \tparam Geometry1 \tparam_geometry |
| \tparam Geometry2 \tparam_geometry |
| \tparam GeometryOut Collection of geometries (e.g. std::vector, std::deque, boost::geometry::multi*) of which |
| the value_type fulfills a \p_l_or_c concept, or it is the output geometry (e.g. for a box) |
| \param geometry1 \param_geometry |
| \param geometry2 \param_geometry |
| \param geometry_out The output geometry, either a multi_point, multi_polygon, |
| multi_linestring, or a box (for intersection of two boxes) |
| |
| \qbk{[include reference/algorithms/intersection.qbk]} |
| */ |
| template |
| < |
| typename Geometry1, |
| typename Geometry2, |
| typename GeometryOut |
| > |
| inline bool intersection(Geometry1 const& geometry1, |
| Geometry2 const& geometry2, |
| GeometryOut& geometry_out) |
| { |
| return resolve_variant::intersection |
| < |
| Geometry1, |
| Geometry2 |
| >::template apply |
| < |
| GeometryOut |
| > |
| (geometry1, geometry2, geometry_out); |
| } |
| |
| |
| }} // namespace boost::geometry |
| |
| |
| #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTION_INTERFACE_HPP |
