70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
// Boost.Geometry
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// Copyright (c) 2021-2023, Oracle and/or its affiliates.
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// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
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// Licensed under the Boost Software License version 1.0.
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// http://www.boost.org/users/license.html
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#ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_CLOSEST_POINTS_UTILITIES_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_CLOSEST_POINTS_UTILITIES_HPP
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#include <boost/geometry/algorithms/detail/assign_indexed_point.hpp>
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#include <boost/geometry/util/algorithm.hpp>
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#include <boost/geometry/strategies/distance.hpp>
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namespace boost { namespace geometry
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{
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namespace detail { namespace closest_points
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{
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struct set_segment_from_points
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{
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template <typename Point1, typename Point2, typename Segment>
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static inline void apply(Point1 const& p1, Point2 const& p2, Segment& segment)
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{
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assign_point_to_index<0>(p1, segment);
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assign_point_to_index<1>(p2, segment);
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}
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};
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struct swap_segment_points
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{
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template <typename Segment>
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static inline void apply(Segment& segment)
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{
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geometry::detail::for_each_dimension<Segment>([&](auto index)
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{
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auto temp = get<0,index>(segment);
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set<0,index>(segment, get<1,index>(segment));
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set<1,index>(segment, temp);
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});
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}
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};
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template <typename Geometry1, typename Geometry2, typename Strategies>
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using distance_strategy_t = decltype(
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std::declval<Strategies>().distance(std::declval<Geometry1>(), std::declval<Geometry2>()));
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template <typename Geometry1, typename Geometry2, typename Strategies>
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using creturn_t = typename strategy::distance::services::return_type
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<
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typename strategy::distance::services::comparable_type
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<
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distance_strategy_t<Geometry1, Geometry2, Strategies>
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>::type,
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typename point_type<Geometry1>::type,
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typename point_type<Geometry2>::type
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>::type;
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}} // namespace detail::closest_points
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}} // namespace boost::geometry
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#endif //BOOST_GEOMETRY_ALGORITHMS_DETAIL_CLOSEST_POINTS_UTILITIES_HPP
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