1 // Boost.Geometry (aka GGL, Generic Geometry Library) 2 3 // Copyright (c) 2010 Alfredo Correa 4 // Copyright (c) 2010-2012 Barend Gehrels, Amsterdam, the Netherlands. 5 6 // Use, modification and distribution is subject to the Boost Software License, 7 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at 8 // http://www.boost.org/LICENSE_1_0.txt) 9 10 #ifndef BOOST_GEOMETRY_GEOMETRIES_ADAPTED_BOOST_ARRAY_HPP 11 #define BOOST_GEOMETRY_GEOMETRIES_ADAPTED_BOOST_ARRAY_HPP 12 13 14 #ifdef BOOST_GEOMETRY_ADAPTED_BOOST_ARRAY_TAG_DEFINED 15 #error Include either "boost_array_as_point" or \ 16 "boost_array_as_linestring" or "boost_array_as_ring" \ 17 or "boost_array_as_multi_point" to adapt a boost_array 18 #endif 19 20 #define BOOST_GEOMETRY_ADAPTED_BOOST_ARRAY_TAG_DEFINED 21 22 23 #include <cstddef> 24 25 #include <boost/type_traits/is_arithmetic.hpp> 26 27 #include <boost/geometry/core/access.hpp> 28 #include <boost/geometry/core/cs.hpp> 29 #include <boost/geometry/core/coordinate_dimension.hpp> 30 #include <boost/geometry/core/coordinate_type.hpp> 31 #include <boost/geometry/core/tags.hpp> 32 33 #include <boost/array.hpp> 34 35 namespace boost { namespace geometry 36 { 37 38 39 #ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS 40 namespace traits 41 { 42 43 44 #ifndef DOXYGEN_NO_DETAIL 45 namespace detail 46 { 47 48 49 // Create class and specialization to indicate the tag 50 // for normal cases and the case that the type of the c-array is arithmetic 51 template <bool> 52 struct boost_array_tag 53 { 54 typedef geometry_not_recognized_tag type; 55 }; 56 57 58 template <> 59 struct boost_array_tag<true> 60 { 61 typedef point_tag type; 62 }; 63 64 65 } // namespace detail 66 #endif // DOXYGEN_NO_DETAIL 67 68 69 // Assign the point-tag, preventing arrays of points getting a point-tag 70 template <typename CoordinateType, std::size_t DimensionCount> 71 struct tag<boost::array<CoordinateType, DimensionCount> > 72 : detail::boost_array_tag<boost::is_arithmetic<CoordinateType>::value> {}; 73 74 75 template <typename CoordinateType, std::size_t DimensionCount> 76 struct coordinate_type<boost::array<CoordinateType, DimensionCount> > 77 { 78 typedef CoordinateType type; 79 }; 80 81 82 template <typename CoordinateType, std::size_t DimensionCount> 83 struct dimension<boost::array<CoordinateType, DimensionCount> >: boost::mpl::int_<DimensionCount> {}; 84 85 86 template <typename CoordinateType, std::size_t DimensionCount, std::size_t Dimension> 87 struct access<boost::array<CoordinateType, DimensionCount>, Dimension> 88 { getboost::geometry::traits::access89 static inline CoordinateType get(boost::array<CoordinateType, DimensionCount> const& a) 90 { 91 return a[Dimension]; 92 } 93 setboost::geometry::traits::access94 static inline void set(boost::array<CoordinateType, DimensionCount>& a, 95 CoordinateType const& value) 96 { 97 a[Dimension] = value; 98 } 99 }; 100 101 102 } // namespace traits 103 #endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS 104 105 106 }} // namespace boost::geometry 107 108 109 #define BOOST_GEOMETRY_REGISTER_BOOST_ARRAY_CS(CoordinateSystem) \ 110 namespace boost { namespace geometry { namespace traits { \ 111 template <class T, std::size_t N> \ 112 struct coordinate_system<boost::array<T, N> > \ 113 { \ 114 typedef CoordinateSystem type; \ 115 }; \ 116 }}} 117 118 119 #endif // BOOST_GEOMETRY_GEOMETRIES_ADAPTED_BOOST_ARRAY_HPP 120 121