]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
2 | ||
3 | // Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands. | |
4 | // Copyright (c) 2008-2015 Bruno Lalande, Paris, France. | |
5 | // Copyright (c) 2009-2015 Mateusz Loskot, London, UK. | |
6 | ||
7 | // This file was modified by Oracle on 2015. | |
8 | // Modifications copyright (c) 2015, Oracle and/or its affiliates. | |
9 | ||
10 | // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle | |
11 | ||
12 | // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library | |
13 | // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. | |
14 | ||
15 | // Use, modification and distribution is subject to the Boost Software License, | |
16 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
17 | // http://www.boost.org/LICENSE_1_0.txt) | |
18 | ||
19 | ||
20 | #ifndef BOOST_GEOMETRY_CORE_RADIAN_ACCESS_HPP | |
21 | #define BOOST_GEOMETRY_CORE_RADIAN_ACCESS_HPP | |
22 | ||
23 | ||
24 | #include <cstddef> | |
25 | ||
26 | #include <boost/numeric/conversion/cast.hpp> | |
27 | ||
28 | #include <boost/geometry/core/access.hpp> | |
29 | #include <boost/geometry/core/cs.hpp> | |
30 | #include <boost/geometry/core/coordinate_type.hpp> | |
31 | ||
32 | ||
33 | #include <boost/geometry/util/math.hpp> | |
34 | ||
35 | ||
36 | ||
37 | namespace boost { namespace geometry | |
38 | { | |
39 | ||
40 | ||
41 | #ifndef DOXYGEN_NO_DETAIL | |
42 | namespace detail | |
43 | { | |
44 | ||
45 | template<std::size_t Dimension, typename Geometry> | |
46 | struct degree_radian_converter | |
47 | { | |
48 | typedef typename fp_coordinate_type<Geometry>::type coordinate_type; | |
49 | ||
50 | static inline coordinate_type get(Geometry const& geometry) | |
51 | { | |
52 | return boost::numeric_cast | |
53 | < | |
54 | coordinate_type | |
55 | >(geometry::get<Dimension>(geometry) | |
56 | * math::d2r<coordinate_type>()); | |
57 | } | |
58 | ||
59 | static inline void set(Geometry& geometry, coordinate_type const& radians) | |
60 | { | |
61 | geometry::set<Dimension>(geometry, boost::numeric_cast | |
62 | < | |
63 | coordinate_type | |
64 | >(radians * math::r2d<coordinate_type>())); | |
65 | } | |
66 | ||
67 | }; | |
68 | ||
69 | ||
70 | // Default, radian (or any other coordinate system) just works like "get" | |
71 | template <std::size_t Dimension, typename Geometry, typename DegreeOrRadian> | |
72 | struct radian_access | |
73 | { | |
74 | typedef typename fp_coordinate_type<Geometry>::type coordinate_type; | |
75 | ||
76 | static inline coordinate_type get(Geometry const& geometry) | |
77 | { | |
78 | return geometry::get<Dimension>(geometry); | |
79 | } | |
80 | ||
81 | static inline void set(Geometry& geometry, coordinate_type const& radians) | |
82 | { | |
83 | geometry::set<Dimension>(geometry, radians); | |
84 | } | |
85 | }; | |
86 | ||
87 | // Specialize, any "degree" coordinate system will be converted to radian | |
88 | // but only for dimension 0,1 (so: dimension 2 and heigher are untouched) | |
89 | ||
90 | template | |
91 | < | |
92 | typename Geometry, | |
93 | template<typename> class CoordinateSystem | |
94 | > | |
95 | struct radian_access<0, Geometry, CoordinateSystem<degree> > | |
96 | : degree_radian_converter<0, Geometry> | |
97 | {}; | |
98 | ||
99 | ||
100 | template | |
101 | < | |
102 | typename Geometry, | |
103 | template<typename> class CoordinateSystem | |
104 | > | |
105 | struct radian_access<1, Geometry, CoordinateSystem<degree> > | |
106 | : degree_radian_converter<1, Geometry> | |
107 | {}; | |
108 | ||
109 | ||
110 | } // namespace detail | |
111 | #endif // DOXYGEN_NO_DETAIL | |
112 | ||
113 | ||
114 | /*! | |
115 | \brief get coordinate value of a point, result is in Radian | |
116 | \details Result is in Radian, even if source coordinate system | |
117 | is in Degrees | |
118 | \return coordinate value | |
119 | \ingroup get | |
120 | \tparam Dimension dimension | |
121 | \tparam Geometry geometry | |
122 | \param geometry geometry to get coordinate value from | |
123 | \note Only applicable to coordinate systems templatized by units, | |
124 | e.g. spherical or geographic coordinate systems | |
125 | */ | |
126 | template <std::size_t Dimension, typename Geometry> | |
127 | inline typename fp_coordinate_type<Geometry>::type get_as_radian(Geometry const& geometry) | |
128 | { | |
129 | return detail::radian_access<Dimension, Geometry, | |
130 | typename coordinate_system<Geometry>::type>::get(geometry); | |
131 | } | |
132 | ||
133 | ||
134 | /*! | |
135 | \brief set coordinate value (in radian) to a point | |
136 | \details Coordinate value will be set correctly, if coordinate system of | |
137 | point is in Degree, Radian value will be converted to Degree | |
138 | \ingroup set | |
139 | \tparam Dimension dimension | |
140 | \tparam Geometry geometry | |
141 | \param geometry geometry to assign coordinate to | |
142 | \param radians coordinate value to assign | |
143 | \note Only applicable to coordinate systems templatized by units, | |
144 | e.g. spherical or geographic coordinate systems | |
145 | */ | |
146 | template <std::size_t Dimension, typename Geometry> | |
147 | inline void set_from_radian(Geometry& geometry, | |
148 | typename fp_coordinate_type<Geometry>::type const& radians) | |
149 | { | |
150 | detail::radian_access<Dimension, Geometry, | |
151 | typename coordinate_system<Geometry>::type>::set(geometry, radians); | |
152 | } | |
153 | ||
154 | ||
155 | }} // namespace boost::geometry | |
156 | ||
157 | ||
158 | #endif // BOOST_GEOMETRY_CORE_RADIAN_ACCESS_HPP |