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353 lines
10 KiB
C++
353 lines
10 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
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// Copyright (c) 2014-2015 Adam Wulkiewicz, Lodz, Poland.
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// This file was modified by Oracle on 2014-2021.
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// Modifications copyright (c) 2014-2021 Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Contributed and/or modified by Menelaos Karavelas, 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_DETAIL_EQUALS_INTERFACE_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_EQUALS_INTERFACE_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/core/coordinate_dimension.hpp>
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#include <boost/geometry/core/reverse_dispatch.hpp>
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#include <boost/geometry/core/tag.hpp>
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#include <boost/geometry/core/tag_cast.hpp>
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#include <boost/geometry/geometries/concepts/check.hpp>
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#include <boost/geometry/algorithms/not_implemented.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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typename CastedTag1 = typename tag_cast<Tag1, pointlike_tag, linear_tag, areal_tag>::type,
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typename CastedTag2 = typename tag_cast<Tag2, pointlike_tag, linear_tag, areal_tag>::type,
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std::size_t DimensionCount = dimension<Geometry1>::type::value,
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bool Reverse = reverse_dispatch<Geometry1, Geometry2>::type::value
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>
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struct equals: not_implemented<Tag1, Tag2>
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{};
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// If reversal is needed, perform it
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template
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<
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typename Geometry1, typename Geometry2,
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typename Tag1, typename Tag2,
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typename CastedTag1, typename CastedTag2,
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std::size_t DimensionCount
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>
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struct equals<Geometry1, Geometry2, Tag1, Tag2, CastedTag1, CastedTag2, DimensionCount, true>
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: equals<Geometry2, Geometry1, Tag2, Tag1, CastedTag2, CastedTag1, DimensionCount, false>
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{
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template <typename Strategy>
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static inline bool apply(Geometry1 const& g1, Geometry2 const& g2, Strategy const& strategy)
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{
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return equals
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<
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Geometry2, Geometry1,
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Tag2, Tag1,
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CastedTag2, CastedTag1,
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DimensionCount,
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false
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>::apply(g2, g1, strategy);
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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 equals
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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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return dispatch::equals
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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 equals<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::relate::services::strategy_converter;
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return dispatch::equals
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<
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Geometry1, Geometry2
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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 equals<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::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 dispatch::equals
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<
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Geometry1, Geometry2
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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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template <typename Geometry1, typename Geometry2>
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struct equals
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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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concepts::check_concepts_and_equal_dimensions
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<
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Geometry1 const,
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Geometry2 const
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>();
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return resolve_strategy::equals
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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 equals<boost::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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inline bool operator()(Geometry1 const& geometry1) const
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{
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return equals<Geometry1, 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(
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boost::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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{
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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 equals<Geometry1, boost::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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inline bool operator()(Geometry2 const& geometry2) const
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{
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return equals<Geometry1, 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(
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Geometry1 const& geometry1,
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boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry2,
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Strategy const& strategy
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)
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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 <
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BOOST_VARIANT_ENUM_PARAMS(typename T1),
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BOOST_VARIANT_ENUM_PARAMS(typename T2)
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>
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struct equals<
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boost::variant<BOOST_VARIANT_ENUM_PARAMS(T1)>,
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boost::variant<BOOST_VARIANT_ENUM_PARAMS(T2)>
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>
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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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inline bool operator()(Geometry1 const& geometry1,
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Geometry2 const& geometry2) const
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{
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return equals<Geometry1, 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(
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boost::variant<BOOST_VARIANT_ENUM_PARAMS(T1)> const& geometry1,
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boost::variant<BOOST_VARIANT_ENUM_PARAMS(T2)> const& geometry2,
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Strategy const& strategy
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)
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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_check{are spatially equal}
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\details \details_check12{equals, is spatially equal}. Spatially equal means
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that the same point set is included. A box can therefore be spatially equal
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to a ring or a polygon, or a linestring can be spatially equal to a
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multi-linestring or a segment. This only works theoretically, not all
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combinations are implemented yet.
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\ingroup equals
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\tparam Geometry1 \tparam_geometry
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\tparam Geometry2 \tparam_geometry
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\tparam Strategy \tparam_strategy{Equals}
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\param geometry1 \param_geometry
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\param geometry2 \param_geometry
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\param strategy \param_strategy{equals}
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\return \return_check2{are spatially equal}
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\qbk{distinguish,with strategy}
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\qbk{[include reference/algorithms/equals.qbk]}
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*/
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template <typename Geometry1, typename Geometry2, typename Strategy>
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inline bool equals(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::equals
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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_check{are spatially equal}
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\details \details_check12{equals, is spatially equal}. Spatially equal means
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that the same point set is included. A box can therefore be spatially equal
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to a ring or a polygon, or a linestring can be spatially equal to a
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multi-linestring or a segment. This only works theoretically, not all
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combinations are implemented yet.
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\ingroup equals
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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{are spatially equal}
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\qbk{[include reference/algorithms/equals.qbk]}
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*/
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template <typename Geometry1, typename Geometry2>
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inline bool equals(Geometry1 const& geometry1, Geometry2 const& geometry2)
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{
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return resolve_variant::equals<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_DETAIL_EQUALS_INTERFACE_HPP
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