470 lines
16 KiB
C++
470 lines
16 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 2014-2022.
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// Modifications copyright (c) 2014-2022 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_IMPLEMENTATION_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_EQUALS_IMPLEMENTATION_HPP
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#include <cstddef>
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#include <type_traits>
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#include <vector>
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#include <boost/range/size.hpp>
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#include <boost/geometry/core/access.hpp>
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#include <boost/geometry/core/tags.hpp>
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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/algorithms/detail/equals/point_point.hpp>
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#include <boost/geometry/algorithms/detail/equals/collect_vectors.hpp>
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#include <boost/geometry/algorithms/detail/equals/interface.hpp>
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#include <boost/geometry/algorithms/detail/relate/implementation.hpp>
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#include <boost/geometry/algorithms/detail/relate/relate_impl.hpp>
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#include <boost/geometry/strategies/relate/cartesian.hpp>
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#include <boost/geometry/strategies/relate/geographic.hpp>
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#include <boost/geometry/strategies/relate/spherical.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/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 point_point
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{
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template <typename Point1, typename Point2, typename Strategy>
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static inline bool apply(Point1 const& point1, Point2 const& point2,
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Strategy const& strategy)
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{
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typedef decltype(strategy.relate(point1, point2)) strategy_type;
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return strategy_type::apply(point1, point2);
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}
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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, typename Strategy>
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static inline bool apply(Box1 const& box1, Box2 const& box2, Strategy const& strategy)
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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, strategy);
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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, typename Strategy>
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static inline bool apply(Box1 const& , Box2 const& , Strategy 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, typename Strategy>
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static inline bool apply(Segment1 const& segment1, Segment2 const& segment2,
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Strategy const& strategy)
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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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strategy)
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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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strategy)
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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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strategy)
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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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strategy)
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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, 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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return geometry::math::equals(geometry::area(geometry1, strategy),
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geometry::area(geometry2, strategy));
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}
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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, 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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return geometry::math::equals(geometry::length(geometry1, strategy),
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geometry::length(geometry2, strategy));
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}
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};
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*/
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// Small helper structure do decide to use collect_vectors, or not
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template <typename Strategy, typename CsTag>
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struct use_collect_vectors
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{
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static constexpr bool value = false;
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};
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template <typename Strategy>
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struct use_collect_vectors<Strategy, cartesian_tag>
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{
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static constexpr bool value = true;
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template <typename T, typename Point>
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using type = collected_vector_cartesian<T>;
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};
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template <typename CV>
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struct use_collect_vectors<strategy::side::spherical_side_formula<CV>, spherical_tag>
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{
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static constexpr bool value = true;
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template <typename T, typename Point>
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using type = collected_vector_spherical<T, Point>;
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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, 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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if (! TrivialCheck::apply(geometry1, geometry2, strategy))
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{
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return false;
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}
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using calculation_type = 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;
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using collected_vector_type = typename use_collect_vectors
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<
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decltype(std::declval<Strategy>().side()),
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typename Strategy::cs_tag
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>::template type
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<
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calculation_type,
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typename geometry::point_type<Geometry1>::type
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>;
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std::vector<collected_vector_type> 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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// 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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// Use either collect_vectors or relate
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// NOTE: the result could be conceptually different for invalid
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// geometries in different coordinate systems because collect_vectors
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// and relate treat invalid geometries differently.
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template<typename TrivialCheck>
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struct equals_by_collection_or_relate
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{
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template <typename Strategy>
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using use_vectors = use_collect_vectors
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<
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decltype(std::declval<Strategy>().side()),
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typename Strategy::cs_tag
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>;
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template
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<
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typename Geometry1, typename Geometry2, typename Strategy,
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std::enable_if_t<use_vectors<Strategy>::value, int> = 0
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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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Strategy const& strategy)
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{
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return equals_by_collection<TrivialCheck>::apply(geometry1, geometry2, strategy);
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}
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template
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<
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typename Geometry1, typename Geometry2, typename Strategy,
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std::enable_if_t<! use_vectors<Strategy>::value, int> = 0
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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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Strategy const& strategy)
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{
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return equals_by_relate<Geometry1, Geometry2>::apply(geometry1, geometry2, strategy);
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}
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};
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struct equals_always_false
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{
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template <typename Geometry1, typename Geometry2, typename Strategy>
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static inline bool apply(Geometry1 const& , Geometry2 const& , Strategy const& )
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{
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return false;
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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 <typename P1, typename P2, std::size_t DimensionCount, bool Reverse>
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struct equals<P1, P2, point_tag, point_tag, pointlike_tag, pointlike_tag, DimensionCount, Reverse>
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: detail::equals::point_point<0, DimensionCount>
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{};
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template <typename MultiPoint1, typename MultiPoint2, std::size_t DimensionCount, bool Reverse>
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struct equals<MultiPoint1, MultiPoint2, multi_point_tag, multi_point_tag, pointlike_tag, pointlike_tag, DimensionCount, Reverse>
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: detail::equals::equals_by_relate<MultiPoint1, MultiPoint2>
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{};
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template <typename MultiPoint, typename Point, std::size_t DimensionCount, bool Reverse>
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struct equals<Point, MultiPoint, point_tag, multi_point_tag, pointlike_tag, pointlike_tag, DimensionCount, Reverse>
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: detail::equals::equals_by_relate<Point, MultiPoint>
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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, areal_tag, areal_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, areal_tag, areal_tag, 2, Reverse>
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: detail::equals::equals_by_collection_or_relate<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, areal_tag, areal_tag, 2, Reverse>
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: detail::equals::equals_by_collection_or_relate<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, areal_tag, areal_tag, 2, Reverse>
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: detail::equals::equals_by_collection_or_relate<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, areal_tag, areal_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, areal_tag, areal_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, linear_tag, linear_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, linear_tag, linear_tag, 2, Reverse>
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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, linear_tag, linear_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, linear_tag, linear_tag, 2, Reverse>
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: detail::equals::equals_by_relate<MultiLineString1, MultiLineString2>
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{};
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template <typename LineString, typename Segment, bool Reverse>
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struct equals<LineString, Segment, linestring_tag, segment_tag, linear_tag, linear_tag, 2, Reverse>
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: detail::equals::equals_by_relate<LineString, Segment>
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{};
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template <typename MultiLineString, typename Segment, bool Reverse>
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struct equals<MultiLineString, Segment, multi_linestring_tag, segment_tag, linear_tag, linear_tag, 2, Reverse>
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: detail::equals::equals_by_relate<MultiLineString, Segment>
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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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areal_tag, areal_tag,
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2,
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Reverse
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>
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: detail::equals::equals_by_collection_or_relate<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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areal_tag, areal_tag,
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2,
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Reverse
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>
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: detail::equals::equals_by_collection_or_relate<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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areal_tag, areal_tag,
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2,
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Reverse
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>
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: detail::equals::equals_by_collection_or_relate<detail::equals::area_check>
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{};
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// NOTE: degenerated linear geometries, e.g. segment or linestring containing
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// 2 equal points, are considered to be invalid. Though theoretically
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// degenerated segments and linestrings could be treated as points and
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// multi-linestrings as multi-points.
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// This reasoning could also be applied to boxes.
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template <typename Geometry1, typename Geometry2, typename Tag1, typename Tag2, std::size_t DimensionCount>
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struct equals<Geometry1, Geometry2, Tag1, Tag2, pointlike_tag, linear_tag, DimensionCount, false>
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: detail::equals::equals_always_false
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{};
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template <typename Geometry1, typename Geometry2, typename Tag1, typename Tag2, std::size_t DimensionCount>
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struct equals<Geometry1, Geometry2, Tag1, Tag2, linear_tag, pointlike_tag, DimensionCount, false>
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: detail::equals::equals_always_false
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{};
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template <typename Geometry1, typename Geometry2, typename Tag1, typename Tag2, std::size_t DimensionCount>
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struct equals<Geometry1, Geometry2, Tag1, Tag2, pointlike_tag, areal_tag, DimensionCount, false>
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: detail::equals::equals_always_false
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{};
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template <typename Geometry1, typename Geometry2, typename Tag1, typename Tag2, std::size_t DimensionCount>
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struct equals<Geometry1, Geometry2, Tag1, Tag2, areal_tag, pointlike_tag, DimensionCount, false>
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: detail::equals::equals_always_false
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{};
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template <typename Geometry1, typename Geometry2, typename Tag1, typename Tag2, std::size_t DimensionCount>
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struct equals<Geometry1, Geometry2, Tag1, Tag2, linear_tag, areal_tag, DimensionCount, false>
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: detail::equals::equals_always_false
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{};
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template <typename Geometry1, typename Geometry2, typename Tag1, typename Tag2, std::size_t DimensionCount>
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struct equals<Geometry1, Geometry2, Tag1, Tag2, areal_tag, linear_tag, DimensionCount, false>
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: detail::equals::equals_always_false
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{};
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} // namespace dispatch
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#endif // DOXYGEN_NO_DISPATCH
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_EQUALS_IMPLEMENTATION_HPP
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