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Added thirdparty: boost library
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Viacheslav Demydiuk
+196
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// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2011-2015 Akira Takahashi
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// Copyright (c) 2011-2015 Barend Gehrels, Amsterdam, the Netherlands.
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// This file was modified by Oracle on 2015-2020.
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// Modifications copyright (c) 2015-2020, Oracle and/or its affiliates.
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// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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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_GEOMETRIES_ADAPTED_FUSION_HPP
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#define BOOST_GEOMETRY_GEOMETRIES_ADAPTED_FUSION_HPP
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#include <cstddef>
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#include <type_traits>
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#include <boost/fusion/include/is_sequence.hpp>
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#include <boost/fusion/include/size.hpp>
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#include <boost/fusion/include/tag_of.hpp>
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#include <boost/fusion/include/front.hpp>
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#include <boost/fusion/include/at.hpp>
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#include <boost/fusion/mpl.hpp>
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#include <boost/mpl/and.hpp>
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#include <boost/mpl/count_if.hpp>
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#include <boost/mpl/front.hpp>
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#include <boost/mpl/placeholders.hpp>
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#include <boost/mpl/pop_front.hpp>
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#include <boost/mpl/size.hpp>
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#include <boost/type_traits/is_same.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/coordinate_system.hpp>
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#include <boost/geometry/core/coordinate_type.hpp>
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#include <boost/geometry/core/point_type.hpp>
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#include <boost/geometry/core/tags.hpp>
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namespace boost { namespace geometry
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{
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namespace fusion_adapt_detail
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{
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template <class Sequence>
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struct all_same :
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std::integral_constant
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<
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bool,
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boost::mpl::count_if<
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Sequence,
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boost::is_same<
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typename boost::mpl::front<Sequence>::type,
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boost::mpl::_
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>
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>::value == boost::mpl::size<Sequence>::value
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>
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{};
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template <class Sequence>
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struct is_coordinate_size
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: std::integral_constant
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<
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bool,
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(boost::fusion::result_of::size<Sequence>::value == 2
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|| boost::fusion::result_of::size<Sequence>::value == 3)
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>
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{};
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template
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<
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typename Sequence,
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bool IsSequence = boost::fusion::traits::is_sequence<Sequence>::value
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>
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struct is_fusion_sequence
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: std::integral_constant
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<
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bool,
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(fusion_adapt_detail::is_coordinate_size<Sequence>::value
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&& fusion_adapt_detail::all_same<Sequence>::value)
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>
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{};
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template<typename Sequence>
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struct is_fusion_sequence<Sequence, false>
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: std::false_type
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{};
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} // namespace fusion_adapt_detail
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#ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
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namespace traits
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{
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// Boost Fusion Sequence, 2D or 3D
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template <typename Sequence>
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struct coordinate_type
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<
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Sequence,
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std::enable_if_t
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<
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fusion_adapt_detail::is_fusion_sequence<Sequence>::value
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>
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>
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{
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typedef typename boost::mpl::front<Sequence>::type type;
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};
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template <typename Sequence>
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struct dimension
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<
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Sequence,
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std::enable_if_t
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<
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fusion_adapt_detail::is_fusion_sequence<Sequence>::value
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>
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> : boost::mpl::size<Sequence>
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{};
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template <typename Sequence, std::size_t Dimension>
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struct access
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<
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Sequence,
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Dimension,
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std::enable_if_t
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<
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fusion_adapt_detail::is_fusion_sequence<Sequence>::value
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>
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>
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{
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typedef typename coordinate_type<Sequence>::type ctype;
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static inline ctype get(Sequence const& point)
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{
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return boost::fusion::at_c<Dimension>(point);
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}
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template <class CoordinateType>
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static inline void set(Sequence& point, CoordinateType const& value)
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{
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boost::fusion::at_c<Dimension>(point) = value;
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}
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};
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template <typename Sequence>
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struct tag
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<
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Sequence,
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std::enable_if_t
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<
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fusion_adapt_detail::is_fusion_sequence<Sequence>::value
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>
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>
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{
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typedef point_tag type;
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};
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} // namespace traits
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#endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS
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}} // namespace boost::geometry
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// Convenience registration macro to bind a Fusion sequence to a CS
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#define BOOST_GEOMETRY_REGISTER_BOOST_FUSION_CS(CoordinateSystem) \
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namespace boost { namespace geometry { namespace traits { \
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template <typename Sequence> \
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struct coordinate_system \
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< \
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Sequence, \
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std::enable_if_t \
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< \
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fusion_adapt_detail::is_fusion_sequence<Sequence>::value \
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> \
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> \
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{ typedef CoordinateSystem type; }; \
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}}}
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#endif // BOOST_GEOMETRY_GEOMETRIES_ADAPTED_FUSION_HPP
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