1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
2 | |
3 | // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. |
4 | // Copyright (c) 2008-2012 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_CORE_COORDINATE_TYPE_HPP |
15 | #define BOOST_GEOMETRY_CORE_COORDINATE_TYPE_HPP |
16 | |
17 | |
18 | #include <boost/mpl/assert.hpp> |
19 | |
20 | #include <boost/geometry/core/tag.hpp> |
21 | #include <boost/geometry/core/point_type.hpp> |
22 | #include <boost/geometry/util/bare_type.hpp> |
23 | #include <boost/geometry/util/promote_floating_point.hpp> |
24 | |
25 | |
26 | namespace boost { namespace geometry |
27 | { |
28 | |
29 | namespace traits |
30 | { |
31 | |
32 | /*! |
33 | \brief Traits class which indicate the coordinate type (double,float,...) of a point |
34 | \ingroup traits |
35 | \par Geometries: |
36 | - point |
37 | \par Specializations should provide: |
38 | - typedef T type; (double,float,int,etc) |
39 | */ |
40 | template <typename Point, typename Enable = void> |
41 | struct coordinate_type |
42 | { |
43 | BOOST_MPL_ASSERT_MSG |
44 | ( |
45 | false, NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE, (types<Point>) |
46 | ); |
47 | }; |
48 | |
49 | } // namespace traits |
50 | |
51 | #ifndef DOXYGEN_NO_DISPATCH |
52 | namespace core_dispatch |
53 | { |
54 | |
55 | template <typename GeometryTag, typename Geometry> |
56 | struct coordinate_type |
57 | { |
58 | typedef typename point_type<GeometryTag, Geometry>::type point_type; |
59 | |
60 | // Call its own specialization on point-tag |
61 | typedef typename coordinate_type<point_tag, point_type>::type type; |
62 | }; |
63 | |
64 | template <typename Point> |
65 | struct coordinate_type<point_tag, Point> |
66 | { |
67 | typedef typename traits::coordinate_type |
68 | < |
69 | typename geometry::util::bare_type<Point>::type |
70 | >::type type; |
71 | }; |
72 | |
73 | |
74 | } // namespace core_dispatch |
75 | #endif // DOXYGEN_NO_DISPATCH |
76 | |
77 | |
78 | /*! |
79 | \brief \brief_meta{type, coordinate type (int\, float\, double\, etc), \meta_point_type} |
80 | \tparam Geometry \tparam_geometry |
81 | \ingroup core |
82 | |
83 | \qbk{[include reference/core/coordinate_type.qbk]} |
84 | */ |
85 | template <typename Geometry> |
86 | struct coordinate_type |
87 | { |
88 | typedef typename core_dispatch::coordinate_type |
89 | < |
90 | typename tag<Geometry>::type, |
91 | typename geometry::util::bare_type<Geometry>::type |
92 | >::type type; |
93 | }; |
94 | |
95 | template <typename Geometry> |
96 | struct fp_coordinate_type |
97 | { |
98 | typedef typename promote_floating_point |
99 | < |
100 | typename coordinate_type<Geometry>::type |
101 | >::type type; |
102 | }; |
103 | |
104 | |
105 | }} // namespace boost::geometry |
106 | |
107 | |
108 | #endif // BOOST_GEOMETRY_CORE_COORDINATE_TYPE_HPP |
109 | |