487 lines
14 KiB
C++
487 lines
14 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, 2015, 2016.
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// Modifications copyright (c) 2014-2016 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_EQUALS_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_EQUALS_HPP
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#include <cstddef>
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#include <vector>
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#include <boost/range.hpp>
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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/access.hpp>
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#include <boost/geometry/core/coordinate_dimension.hpp>
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#include <boost/geometry/core/geometry_id.hpp>
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#include <boost/geometry/core/reverse_dispatch.hpp>
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#include <boost/geometry/core/tags.hpp>
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#include <boost/geometry/geometries/concepts/check.hpp>
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#include <boost/geometry/algorithms/detail/equals/point_point.hpp>
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#include <boost/geometry/algorithms/detail/not.hpp>
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#include <boost/geometry/algorithms/not_implemented.hpp>
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// For trivial checks
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#include <boost/geometry/algorithms/area.hpp>
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#include <boost/geometry/algorithms/length.hpp>
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#include <boost/geometry/util/math.hpp>
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#include <boost/geometry/util/select_coordinate_type.hpp>
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#include <boost/geometry/util/select_most_precise.hpp>
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#include <boost/geometry/algorithms/detail/equals/collect_vectors.hpp>
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#include <boost/geometry/algorithms/relate.hpp>
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#include <boost/geometry/algorithms/detail/relate/relate_impl.hpp>
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#include <boost/geometry/views/detail/indexed_point_view.hpp>
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namespace boost { namespace geometry
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{
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#ifndef DOXYGEN_NO_DETAIL
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namespace detail { namespace equals
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{
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template
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<
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std::size_t Dimension,
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std::size_t DimensionCount
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>
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struct box_box
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{
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template <typename Box1, typename Box2>
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static inline bool apply(Box1 const& box1, Box2 const& box2)
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{
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if (!geometry::math::equals(get<min_corner, Dimension>(box1), get<min_corner, Dimension>(box2))
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|| !geometry::math::equals(get<max_corner, Dimension>(box1), get<max_corner, Dimension>(box2)))
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{
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return false;
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}
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return box_box<Dimension + 1, DimensionCount>::apply(box1, box2);
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}
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};
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template <std::size_t DimensionCount>
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struct box_box<DimensionCount, DimensionCount>
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{
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template <typename Box1, typename Box2>
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static inline bool apply(Box1 const& , Box2 const& )
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{
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return true;
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}
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};
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struct segment_segment
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{
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template <typename Segment1, typename Segment2>
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static inline bool apply(Segment1 const& segment1, Segment2 const& segment2)
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{
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return equals::equals_point_point(
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indexed_point_view<Segment1 const, 0>(segment1),
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indexed_point_view<Segment2 const, 0>(segment2) )
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? equals::equals_point_point(
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indexed_point_view<Segment1 const, 1>(segment1),
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indexed_point_view<Segment2 const, 1>(segment2) )
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: ( equals::equals_point_point(
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indexed_point_view<Segment1 const, 0>(segment1),
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indexed_point_view<Segment2 const, 1>(segment2) )
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&& equals::equals_point_point(
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indexed_point_view<Segment1 const, 1>(segment1),
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indexed_point_view<Segment2 const, 0>(segment2) )
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);
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}
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};
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struct area_check
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{
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template <typename Geometry1, typename Geometry2>
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static inline bool apply(Geometry1 const& geometry1, Geometry2 const& geometry2)
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{
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return geometry::math::equals(
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geometry::area(geometry1),
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geometry::area(geometry2));
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}
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};
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struct length_check
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{
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template <typename Geometry1, typename Geometry2>
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static inline bool apply(Geometry1 const& geometry1, Geometry2 const& geometry2)
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{
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return geometry::math::equals(
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geometry::length(geometry1),
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geometry::length(geometry2));
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}
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};
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template <typename TrivialCheck>
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struct equals_by_collection
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{
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template <typename Geometry1, typename Geometry2>
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static inline bool apply(Geometry1 const& geometry1, Geometry2 const& geometry2)
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{
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if (! TrivialCheck::apply(geometry1, geometry2))
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{
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return false;
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}
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typedef typename geometry::select_most_precise
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<
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typename select_coordinate_type
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<
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Geometry1, Geometry2
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>::type,
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double
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>::type calculation_type;
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typedef geometry::collected_vector
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<
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calculation_type,
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Geometry1
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> collected_vector;
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std::vector<collected_vector> c1, c2;
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geometry::collect_vectors(c1, geometry1);
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geometry::collect_vectors(c2, geometry2);
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if (boost::size(c1) != boost::size(c2))
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{
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return false;
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}
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std::sort(c1.begin(), c1.end());
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std::sort(c2.begin(), c2.end());
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// Just check if these vectors are equal.
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return std::equal(c1.begin(), c1.end(), c2.begin());
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}
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};
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template<typename Geometry1, typename Geometry2>
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struct equals_by_relate
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: detail::relate::relate_impl
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<
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detail::de9im::static_mask_equals_type,
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Geometry1,
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Geometry2
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>
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{};
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}} // namespace detail::equals
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#endif // DOXYGEN_NO_DETAIL
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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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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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std::size_t DimensionCount
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>
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struct equals<Geometry1, Geometry2, Tag1, Tag2, DimensionCount, true>
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: equals<Geometry2, Geometry1, Tag2, Tag1, DimensionCount, false>
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{
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static inline bool apply(Geometry1 const& g1, Geometry2 const& g2)
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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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DimensionCount,
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false
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>::apply(g2, g1);
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}
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};
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template <typename P1, typename P2, std::size_t DimensionCount, bool Reverse>
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struct equals<P1, P2, point_tag, point_tag, DimensionCount, Reverse>
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: geometry::detail::not_
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<
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detail::disjoint::point_point<P1, P2, 0, DimensionCount>
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>
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{};
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template <typename Box1, typename Box2, std::size_t DimensionCount, bool Reverse>
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struct equals<Box1, Box2, box_tag, box_tag, DimensionCount, Reverse>
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: detail::equals::box_box<0, DimensionCount>
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{};
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template <typename Ring1, typename Ring2, bool Reverse>
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struct equals<Ring1, Ring2, ring_tag, ring_tag, 2, Reverse>
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: detail::equals::equals_by_collection<detail::equals::area_check>
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{};
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template <typename Polygon1, typename Polygon2, bool Reverse>
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struct equals<Polygon1, Polygon2, polygon_tag, polygon_tag, 2, Reverse>
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: detail::equals::equals_by_collection<detail::equals::area_check>
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{};
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template <typename Polygon, typename Ring, bool Reverse>
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struct equals<Polygon, Ring, polygon_tag, ring_tag, 2, Reverse>
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: detail::equals::equals_by_collection<detail::equals::area_check>
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{};
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template <typename Ring, typename Box, bool Reverse>
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struct equals<Ring, Box, ring_tag, box_tag, 2, Reverse>
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: detail::equals::equals_by_collection<detail::equals::area_check>
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{};
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template <typename Polygon, typename Box, bool Reverse>
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struct equals<Polygon, Box, polygon_tag, box_tag, 2, Reverse>
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: detail::equals::equals_by_collection<detail::equals::area_check>
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{};
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template <typename Segment1, typename Segment2, std::size_t DimensionCount, bool Reverse>
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struct equals<Segment1, Segment2, segment_tag, segment_tag, DimensionCount, Reverse>
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: detail::equals::segment_segment
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{};
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template <typename LineString1, typename LineString2, bool Reverse>
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struct equals<LineString1, LineString2, linestring_tag, linestring_tag, 2, Reverse>
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//: detail::equals::equals_by_collection<detail::equals::length_check>
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: detail::equals::equals_by_relate<LineString1, LineString2>
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{};
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template <typename LineString, typename MultiLineString, bool Reverse>
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struct equals<LineString, MultiLineString, linestring_tag, multi_linestring_tag, 2, Reverse>
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: detail::equals::equals_by_relate<LineString, MultiLineString>
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{};
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template <typename MultiLineString1, typename MultiLineString2, bool Reverse>
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struct equals<MultiLineString1, MultiLineString2, multi_linestring_tag, multi_linestring_tag, 2, Reverse>
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: detail::equals::equals_by_relate<MultiLineString1, MultiLineString2>
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{};
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template <typename MultiPolygon1, typename MultiPolygon2, bool Reverse>
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struct equals
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<
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MultiPolygon1, MultiPolygon2,
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multi_polygon_tag, multi_polygon_tag,
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2,
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Reverse
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>
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: detail::equals::equals_by_collection<detail::equals::area_check>
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{};
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template <typename Polygon, typename MultiPolygon, bool Reverse>
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struct equals
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<
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Polygon, MultiPolygon,
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polygon_tag, multi_polygon_tag,
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2,
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Reverse
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>
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: detail::equals::equals_by_collection<detail::equals::area_check>
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{};
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template <typename MultiPolygon, typename Ring, bool Reverse>
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struct equals
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<
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MultiPolygon, Ring,
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multi_polygon_tag, ring_tag,
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2,
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Reverse
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>
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: detail::equals::equals_by_collection<detail::equals::area_check>
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{};
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} // namespace dispatch
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#endif // DOXYGEN_NO_DISPATCH
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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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static inline bool apply(Geometry1 const& geometry1,
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Geometry2 const& geometry2)
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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 dispatch::equals<Geometry1, Geometry2>
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::apply(geometry1, geometry2);
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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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struct visitor: static_visitor<bool>
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{
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Geometry2 const& m_geometry2;
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visitor(Geometry2 const& geometry2)
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: m_geometry2(geometry2)
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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);
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}
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};
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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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)
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{
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return boost::apply_visitor(visitor(geometry2), 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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struct visitor: static_visitor<bool>
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{
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Geometry1 const& m_geometry1;
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visitor(Geometry1 const& geometry1)
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: m_geometry1(geometry1)
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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);
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}
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};
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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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)
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{
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return boost::apply_visitor(visitor(geometry1), 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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struct visitor: static_visitor<bool>
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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);
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}
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};
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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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)
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{
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return boost::apply_visitor(visitor(), 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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\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);
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}
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_ALGORITHMS_EQUALS_HPP
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