1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
2 | |
3 | // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. |
4 | // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. |
5 | // Copyright (c) 2009-2012 Mateusz Loskot, London, UK. |
6 | |
7 | // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library |
8 | // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. |
9 | |
10 | // Use, modification and distribution is subject to the Boost Software License, |
11 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
12 | // http://www.boost.org/LICENSE_1_0.txt) |
13 | |
14 | #ifndef BOOST_GEOMETRY_GEOMETRIES_ADAPTED_C_ARRAY_HPP |
15 | #define BOOST_GEOMETRY_GEOMETRIES_ADAPTED_C_ARRAY_HPP |
16 | |
17 | #include <cstddef> |
18 | |
19 | #include <boost/type_traits/is_arithmetic.hpp> |
20 | |
21 | #include <boost/geometry/core/access.hpp> |
22 | #include <boost/geometry/core/cs.hpp> |
23 | #include <boost/geometry/core/coordinate_dimension.hpp> |
24 | #include <boost/geometry/core/coordinate_type.hpp> |
25 | #include <boost/geometry/core/tags.hpp> |
26 | |
27 | namespace boost { namespace geometry |
28 | { |
29 | |
30 | |
31 | #ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS |
32 | namespace traits |
33 | { |
34 | |
35 | |
36 | #ifndef DOXYGEN_NO_DETAIL |
37 | namespace detail |
38 | { |
39 | |
40 | |
41 | // Create class and specialization to indicate the tag |
42 | // for normal cases and the case that the type of the c-array is arithmetic |
43 | template <bool> |
44 | struct c_array_tag |
45 | { |
46 | typedef geometry_not_recognized_tag type; |
47 | }; |
48 | |
49 | |
50 | template <> |
51 | struct c_array_tag<true> |
52 | { |
53 | typedef point_tag type; |
54 | }; |
55 | |
56 | |
57 | } // namespace detail |
58 | #endif // DOXYGEN_NO_DETAIL |
59 | |
60 | |
61 | // Assign the point-tag, preventing arrays of points getting a point-tag |
62 | template <typename CoordinateType, std::size_t DimensionCount> |
63 | struct tag<CoordinateType[DimensionCount]> |
64 | : detail::c_array_tag<boost::is_arithmetic<CoordinateType>::value> {}; |
65 | |
66 | |
67 | template <typename CoordinateType, std::size_t DimensionCount> |
68 | struct coordinate_type<CoordinateType[DimensionCount]> |
69 | { |
70 | typedef CoordinateType type; |
71 | }; |
72 | |
73 | |
74 | template <typename CoordinateType, std::size_t DimensionCount> |
75 | struct dimension<CoordinateType[DimensionCount]>: boost::mpl::int_<DimensionCount> {}; |
76 | |
77 | |
78 | template <typename CoordinateType, std::size_t DimensionCount, std::size_t Dimension> |
79 | struct access<CoordinateType[DimensionCount], Dimension> |
80 | { |
81 | static inline CoordinateType get(CoordinateType const p[DimensionCount]) |
82 | { |
83 | return p[Dimension]; |
84 | } |
85 | |
86 | static inline void set(CoordinateType p[DimensionCount], |
87 | CoordinateType const& value) |
88 | { |
89 | p[Dimension] = value; |
90 | } |
91 | }; |
92 | |
93 | |
94 | } // namespace traits |
95 | #endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS |
96 | |
97 | |
98 | }} // namespace boost::geometry |
99 | |
100 | |
101 | #define BOOST_GEOMETRY_REGISTER_C_ARRAY_CS(CoordinateSystem) \ |
102 | namespace boost { namespace geometry { namespace traits { \ |
103 | template <typename T, std::size_t N> \ |
104 | struct coordinate_system<T[N]> \ |
105 | { \ |
106 | typedef CoordinateSystem type; \ |
107 | }; \ |
108 | }}} |
109 | |
110 | |
111 | #endif // BOOST_GEOMETRY_GEOMETRIES_ADAPTED_C_ARRAY_HPP |
112 | |