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 // 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:
29 // The above copyright notice and this permission notice shall be included
30 // in all copies or substantial portions of the Software.
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.
40 #ifndef BOOST_GEOMETRY_PROJECTIONS_MILL_HPP
41 #define BOOST_GEOMETRY_PROJECTIONS_MILL_HPP
43 #include <boost/geometry/srs/projections/impl/base_static.hpp>
44 #include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
45 #include <boost/geometry/srs/projections/impl/projects.hpp>
46 #include <boost/geometry/srs/projections/impl/factory_entry.hpp>
48 namespace boost { namespace geometry
53 #ifndef DOXYGEN_NO_DETAIL
54 namespace detail { namespace mill
56 template <typename T, typename Parameters>
57 struct base_mill_spheroid
59 // FORWARD(s_forward) spheroid
60 // Project coordinates from geographic (lon, lat) to cartesian (x, y)
61 inline void fwd(Parameters const& , T const& lp_lon, T const& lp_lat, T& xy_x, T& xy_y) const
63 static const T fourth_pi = detail::fourth_pi<T>();
66 xy_y = log(tan(fourth_pi + lp_lat * .4)) * 1.25;
69 // INVERSE(s_inverse) spheroid
70 // Project coordinates from cartesian (x, y) to geographic (lon, lat)
71 inline void inv(Parameters const& , T const& xy_x, T const& xy_y, T& lp_lon, T& lp_lat) const
73 static const T fourth_pi = detail::fourth_pi<T>();
76 lp_lat = 2.5 * (atan(exp(.8 * xy_y)) - fourth_pi);
79 static inline std::string get_name()
81 return "mill_spheroid";
87 template <typename Parameters>
88 inline void setup_mill(Parameters& par)
93 }} // namespace detail::mill
97 \brief Miller Cylindrical projection
99 \tparam Geographic latlong point type
100 \tparam Cartesian xy point type
101 \tparam Parameters parameter type
102 \par Projection characteristics
106 \image html ex_mill.gif
108 template <typename T, typename Parameters>
109 struct mill_spheroid : public detail::mill::base_mill_spheroid<T, Parameters>
111 template <typename Params>
112 inline mill_spheroid(Params const& , Parameters & par)
114 detail::mill::setup_mill(par);
118 #ifndef DOXYGEN_NO_DETAIL
123 BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_mill, mill_spheroid)
126 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_FI(mill_entry, mill_spheroid)
128 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(mill_init)
130 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(mill, mill_entry)
133 } // namespace detail
136 } // namespace projections
138 }} // namespace boost::geometry
140 #endif // BOOST_GEOMETRY_PROJECTIONS_MILL_HPP