// Boost.Geometry (aka GGL, Generic Geometry Library) // Copyright (c) 2010 Alfredo Correa // Copyright (c) 2010-2012 Barend Gehrels, Amsterdam, the Netherlands. // Copyright (c) 2016 Norbert Wenzel // Use, modification and distribution is subject to the Boost Software License, // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) #ifndef BOOST_GEOMETRY_GEOMETRIES_ADAPTED_STD_ARRAY_HPP #define BOOST_GEOMETRY_GEOMETRIES_ADAPTED_STD_ARRAY_HPP #include <boost/config.hpp> #ifndef BOOST_NO_CXX11_HDR_ARRAY #define BOOST_GEOMETRY_ADAPTED_STD_ARRAY_TAG_DEFINED #include <cstddef> #include <boost/type_traits/is_arithmetic.hpp> #include <boost/geometry/core/access.hpp> #include <boost/geometry/core/cs.hpp> #include <boost/geometry/core/coordinate_dimension.hpp> #include <boost/geometry/core/coordinate_type.hpp> #include <boost/geometry/core/tags.hpp> #include <array> namespace boost { namespace geometry { #ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS namespace traits { #ifndef DOXYGEN_NO_DETAIL namespace detail { // Create class and specialization to indicate the tag // for normal cases and the case that the type of the std-array is arithmetic template <bool> struct std_array_tag { typedef geometry_not_recognized_tag type; }; template <> struct std_array_tag<true> { typedef point_tag type; }; } // namespace detail #endif // DOXYGEN_NO_DETAIL // Assign the point-tag, preventing arrays of points getting a point-tag template <typename CoordinateType, std::size_t DimensionCount> struct tag<std::array<CoordinateType, DimensionCount> > : detail::std_array_tag<boost::is_arithmetic<CoordinateType>::value> {}; template <typename CoordinateType, std::size_t DimensionCount> struct coordinate_type<std::array<CoordinateType, DimensionCount> > { typedef CoordinateType type; }; template <typename CoordinateType, std::size_t DimensionCount> struct dimension<std::array<CoordinateType, DimensionCount> >: boost::mpl::int_<DimensionCount> {}; template <typename CoordinateType, std::size_t DimensionCount, std::size_t Dimension> struct access<std::array<CoordinateType, DimensionCount>, Dimension> { static inline CoordinateType get(std::array<CoordinateType, DimensionCount> const& a) { return a[Dimension]; } static inline void set(std::array<CoordinateType, DimensionCount>& a, CoordinateType const& value) { a[Dimension] = value; } }; } // namespace traits #endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS }} // namespace boost::geometry #define BOOST_GEOMETRY_REGISTER_STD_ARRAY_CS(CoordinateSystem) \ namespace boost { namespace geometry { namespace traits { \ template <class T, std::size_t N> \ struct coordinate_system<std::array<T, N> > \ { \ typedef CoordinateSystem type; \ }; \ }}} #else #warning "This file requires compiler and library support for the ISO C++ 2011 standard." #endif // BOOST_NO_CXX11_HDR_ARRAY #endif // BOOST_GEOMETRY_GEOMETRIES_ADAPTED_STD_ARRAY_HPP