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92f5a8d4 | 1 | // Boost.Geometry - gis-projections (based on PROJ4) |
11fdf7f2 TL |
2 | |
3 | // Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands. | |
4 | ||
92f5a8d4 TL |
5 | // This file was modified by Oracle on 2017, 2018, 2019. |
6 | // Modifications copyright (c) 2017-2019, Oracle and/or its affiliates. | |
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7 | // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle. |
8 | ||
9 | // Use, modification and distribution is subject to the Boost Software License, | |
10 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
11 | // http://www.boost.org/LICENSE_1_0.txt) | |
12 | ||
13 | // This file is converted from PROJ4, http://trac.osgeo.org/proj | |
14 | // PROJ4 is originally written by Gerald Evenden (then of the USGS) | |
15 | // PROJ4 is maintained by Frank Warmerdam | |
16 | // PROJ4 is converted to Boost.Geometry by Barend Gehrels | |
17 | ||
92f5a8d4 | 18 | // Last updated version of proj: 5.0.0 |
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19 | |
20 | // Original copyright notice: | |
21 | ||
22 | // Permission is hereby granted, free of charge, to any person obtaining a | |
23 | // copy of this software and associated documentation files (the "Software"), | |
24 | // to deal in the Software without restriction, including without limitation | |
25 | // the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
26 | // and/or sell copies of the Software, and to permit persons to whom the | |
27 | // Software is furnished to do so, subject to the following conditions: | |
28 | ||
29 | // The above copyright notice and this permission notice shall be included | |
30 | // in all copies or substantial portions of the Software. | |
31 | ||
32 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
33 | // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
34 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
35 | // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
36 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
37 | // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
38 | // DEALINGS IN THE SOFTWARE. | |
39 | ||
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40 | #ifndef BOOST_GEOMETRY_PROJECTIONS_WAG3_HPP |
41 | #define BOOST_GEOMETRY_PROJECTIONS_WAG3_HPP | |
42 | ||
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43 | #include <boost/geometry/srs/projections/impl/base_static.hpp> |
44 | #include <boost/geometry/srs/projections/impl/base_dynamic.hpp> | |
11fdf7f2 | 45 | #include <boost/geometry/srs/projections/impl/factory_entry.hpp> |
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46 | #include <boost/geometry/srs/projections/impl/pj_param.hpp> |
47 | #include <boost/geometry/srs/projections/impl/projects.hpp> | |
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48 | |
49 | namespace boost { namespace geometry | |
50 | { | |
51 | ||
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52 | namespace projections |
53 | { | |
54 | #ifndef DOXYGEN_NO_DETAIL | |
55 | namespace detail { namespace wag3 | |
56 | { | |
57 | template <typename T> | |
58 | struct par_wag3 | |
59 | { | |
60 | T C_x; | |
61 | }; | |
62 | ||
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63 | template <typename T, typename Parameters> |
64 | struct base_wag3_spheroid | |
11fdf7f2 | 65 | { |
92f5a8d4 | 66 | par_wag3<T> m_proj_parm; |
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67 | |
68 | // FORWARD(s_forward) spheroid | |
69 | // Project coordinates from geographic (lon, lat) to cartesian (x, y) | |
92f5a8d4 | 70 | inline void fwd(Parameters const& , T const& lp_lon, T const& lp_lat, T& xy_x, T& xy_y) const |
11fdf7f2 | 71 | { |
92f5a8d4 | 72 | static const T two_thirds = detail::two_thirds<T>(); |
11fdf7f2 | 73 | |
92f5a8d4 | 74 | xy_x = this->m_proj_parm.C_x * lp_lon * cos(two_thirds * lp_lat); |
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75 | xy_y = lp_lat; |
76 | } | |
77 | ||
78 | // INVERSE(s_inverse) spheroid | |
79 | // Project coordinates from cartesian (x, y) to geographic (lon, lat) | |
92f5a8d4 | 80 | inline void inv(Parameters const& , T const& xy_x, T const& xy_y, T& lp_lon, T& lp_lat) const |
11fdf7f2 | 81 | { |
92f5a8d4 | 82 | static const T two_thirds = detail::two_thirds<T>(); |
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83 | |
84 | lp_lat = xy_y; | |
92f5a8d4 | 85 | lp_lon = xy_x / (this->m_proj_parm.C_x * cos(two_thirds * lp_lat)); |
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86 | } |
87 | ||
88 | static inline std::string get_name() | |
89 | { | |
90 | return "wag3_spheroid"; | |
91 | } | |
92 | ||
93 | }; | |
94 | ||
95 | // Wagner III | |
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96 | template <typename Params, typename Parameters, typename T> |
97 | inline void setup_wag3(Params const& params, Parameters& par, par_wag3<T>& proj_parm) | |
11fdf7f2 | 98 | { |
92f5a8d4 | 99 | T const ts = pj_get_param_r<T, srs::spar::lat_ts>(params, "lat_ts", srs::dpar::lat_ts); |
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100 | proj_parm.C_x = cos(ts) / cos(2.*ts/3.); |
101 | par.es = 0.; | |
102 | } | |
103 | ||
104 | }} // namespace detail::wag3 | |
105 | #endif // doxygen | |
106 | ||
107 | /*! | |
108 | \brief Wagner III projection | |
109 | \ingroup projections | |
110 | \tparam Geographic latlong point type | |
111 | \tparam Cartesian xy point type | |
112 | \tparam Parameters parameter type | |
113 | \par Projection characteristics | |
114 | - Pseudocylindrical | |
115 | - Spheroid | |
116 | \par Projection parameters | |
117 | - lat_ts: Latitude of true scale (degrees) | |
118 | \par Example | |
119 | \image html ex_wag3.gif | |
120 | */ | |
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121 | template <typename T, typename Parameters> |
122 | struct wag3_spheroid : public detail::wag3::base_wag3_spheroid<T, Parameters> | |
11fdf7f2 | 123 | { |
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124 | template <typename Params> |
125 | inline wag3_spheroid(Params const& params, Parameters & par) | |
11fdf7f2 | 126 | { |
92f5a8d4 | 127 | detail::wag3::setup_wag3(params, par, this->m_proj_parm); |
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128 | } |
129 | }; | |
130 | ||
131 | #ifndef DOXYGEN_NO_DETAIL | |
132 | namespace detail | |
133 | { | |
134 | ||
135 | // Static projection | |
92f5a8d4 | 136 | BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_wag3, wag3_spheroid) |
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137 | |
138 | // Factory entry(s) | |
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139 | BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_FI(wag3_entry, wag3_spheroid) |
140 | ||
141 | BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(wag3_init) | |
11fdf7f2 | 142 | { |
92f5a8d4 | 143 | BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(wag3, wag3_entry) |
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144 | } |
145 | ||
146 | } // namespace detail | |
147 | #endif // doxygen | |
148 | ||
149 | } // namespace projections | |
150 | ||
151 | }} // namespace boost::geometry | |
152 | ||
153 | #endif // BOOST_GEOMETRY_PROJECTIONS_WAG3_HPP | |
154 |