1 // Boost.Geometry - gis-projections (based on PROJ4)
3 // Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands.
5 // This file was modified by Oracle on 2017, 2018, 2019.
6 // Modifications copyright (c) 2017-2019, Oracle and/or its affiliates.
7 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle.
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)
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
18 // Last updated version of proj: 5.0.0
20 // Original copyright notice:
22 // Purpose: Stub projection implementation for lat/long coordinates. We
23 // don't actually change the coordinates, but we want proj=latlong
24 // to act sort of like a projection.
25 // Author: Frank Warmerdam, warmerdam@pobox.com
26 // Copyright (c) 2000, Frank Warmerdam
28 // Permission is hereby granted, free of charge, to any person obtaining a
29 // copy of this software and associated documentation files (the "Software"),
30 // to deal in the Software without restriction, including without limitation
31 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
32 // and/or sell copies of the Software, and to permit persons to whom the
33 // Software is furnished to do so, subject to the following conditions:
35 // The above copyright notice and this permission notice shall be included
36 // in all copies or substantial portions of the Software.
38 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
39 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
40 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
41 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
42 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
43 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
44 // DEALINGS IN THE SOFTWARE.
46 #ifndef BOOST_GEOMETRY_PROJECTIONS_LATLONG_HPP
47 #define BOOST_GEOMETRY_PROJECTIONS_LATLONG_HPP
49 #include <boost/geometry/srs/projections/impl/base_static.hpp>
50 #include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
51 #include <boost/geometry/srs/projections/impl/projects.hpp>
52 #include <boost/geometry/srs/projections/impl/factory_entry.hpp>
55 namespace boost { namespace geometry
60 #ifndef DOXYGEN_NO_DETAIL
61 namespace detail { namespace latlong
64 /* very loosely based upon DMA code by Bradford W. Drew */
66 template <typename T, typename Parameters>
67 struct base_latlong_other
70 // Project coordinates from geographic (lon, lat) to cartesian (x, y)
71 inline void fwd(Parameters const& par, T const& lp_lon, T const& lp_lat, T& xy_x, T& xy_y) const
73 // TODO: in the original code a is not used
74 // different mechanism is probably used instead
75 xy_x = lp_lon / par.a;
76 xy_y = lp_lat / par.a;
80 // Project coordinates from cartesian (x, y) to geographic (lon, lat)
81 inline void inv(Parameters const& par, T const& xy_x, T const& xy_y, T& lp_lon, T& lp_lat) const
83 // TODO: in the original code a is not used
84 // different mechanism is probably used instead
85 lp_lat = xy_y * par.a;
86 lp_lon = xy_x * par.a;
89 static inline std::string get_name()
91 return "latlong_other";
96 // Lat/long (Geodetic)
97 template <typename Parameters>
98 inline void setup_latlong(Parameters& par)
105 }} // namespace detail::latlong
109 \brief Lat/long (Geodetic) projection
111 \tparam Geographic latlong point type
112 \tparam Cartesian xy point type
113 \tparam Parameters parameter type
115 \image html ex_latlong.gif
117 template <typename T, typename Parameters>
118 struct latlong_other : public detail::latlong::base_latlong_other<T, Parameters>
120 template <typename Params>
121 inline latlong_other(Params const& , Parameters & par)
123 detail::latlong::setup_latlong(par);
127 #ifndef DOXYGEN_NO_DETAIL
132 BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_lonlat, latlong_other)
133 BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_latlon, latlong_other)
134 BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_latlong, latlong_other)
135 BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_longlat, latlong_other)
138 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_FI(latlong_entry, latlong_other)
140 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(latlong_init)
142 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(lonlat, latlong_entry)
143 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(latlon, latlong_entry)
144 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(latlong, latlong_entry)
145 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(longlat, latlong_entry)
148 } // namespace detail
151 } // namespace projections
153 }} // namespace boost::geometry
155 #endif // BOOST_GEOMETRY_PROJECTIONS_LATLONG_HPP