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 // Copyright (c) 2003, 2006 Gerald I. Evenden
24 // Permission is hereby granted, free of charge, to any person obtaining a
25 // copy of this software and associated documentation files (the "Software"),
26 // to deal in the Software without restriction, including without limitation
27 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
28 // and/or sell copies of the Software, and to permit persons to whom the
29 // Software is furnished to do so, subject to the following conditions:
31 // The above copyright notice and this permission notice shall be included
32 // in all copies or substantial portions of the Software.
34 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
35 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
37 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
38 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
39 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
40 // DEALINGS IN THE SOFTWARE.
42 #ifndef BOOST_GEOMETRY_PROJECTIONS_ROUSS_HPP
43 #define BOOST_GEOMETRY_PROJECTIONS_ROUSS_HPP
45 #include <boost/geometry/srs/projections/impl/base_static.hpp>
46 #include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
47 #include <boost/geometry/srs/projections/impl/projects.hpp>
48 #include <boost/geometry/srs/projections/impl/factory_entry.hpp>
49 #include <boost/geometry/srs/projections/impl/proj_mdist.hpp>
51 namespace boost { namespace geometry
56 #ifndef DOXYGEN_NO_DETAIL
57 namespace detail { namespace rouss
63 T A1, A2, A3, A4, A5, A6;
64 T B1, B2, B3, B4, B5, B6, B7, B8;
65 T C1, C2, C3, C4, C5, C6, C7, C8;
66 T D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11;
70 template <typename T, typename Parameters>
71 struct base_rouss_ellipsoid
73 par_rouss<T> m_proj_parm;
75 // FORWARD(e_forward) ellipsoid
76 // Project coordinates from geographic (lon, lat) to cartesian (x, y)
77 inline void fwd(Parameters const& par, T const& lp_lon, T const& lp_lat, T& xy_x, T& xy_y) const
79 T s, al, cp, sp, al2, s2;
83 s = proj_mdist(lp_lat, sp, cp, this->m_proj_parm.en) - this->m_proj_parm.s0;
85 al = lp_lon * cp / sqrt(1. - par.es * sp * sp);
87 xy_x = par.k0 * al*(1.+s2*(this->m_proj_parm.A1+s2*this->m_proj_parm.A4)-al2*(this->m_proj_parm.A2+s*this->m_proj_parm.A3+s2*this->m_proj_parm.A5
88 +al2*this->m_proj_parm.A6));
89 xy_y = par.k0 * (al2*(this->m_proj_parm.B1+al2*this->m_proj_parm.B4)+
90 s*(1.+al2*(this->m_proj_parm.B3-al2*this->m_proj_parm.B6)+s2*(this->m_proj_parm.B2+s2*this->m_proj_parm.B8)+
91 s*al2*(this->m_proj_parm.B5+s*this->m_proj_parm.B7)));
94 // INVERSE(e_inverse) ellipsoid
95 // Project coordinates from cartesian (x, y) to geographic (lon, lat)
96 inline void inv(Parameters const& par, T const& xy_x, T const& xy_y, T& lp_lon, T& lp_lat) const
98 T s, al, x = xy_x / par.k0, y = xy_y / par.k0, x2, y2;
102 al = x*(1.-this->m_proj_parm.C1*y2+x2*(this->m_proj_parm.C2+this->m_proj_parm.C3*y-this->m_proj_parm.C4*x2+this->m_proj_parm.C5*y2-this->m_proj_parm.C7*x2*y)
103 +y2*(this->m_proj_parm.C6*y2-this->m_proj_parm.C8*x2*y));
104 s = this->m_proj_parm.s0 + y*(1.+y2*(-this->m_proj_parm.D2+this->m_proj_parm.D8*y2))+
105 x2*(-this->m_proj_parm.D1+y*(-this->m_proj_parm.D3+y*(-this->m_proj_parm.D5+y*(-this->m_proj_parm.D7+y*this->m_proj_parm.D11)))+
106 x2*(this->m_proj_parm.D4+y*(this->m_proj_parm.D6+y*this->m_proj_parm.D10)-x2*this->m_proj_parm.D9));
107 lp_lat=proj_inv_mdist(s, this->m_proj_parm.en);
109 lp_lon=al * sqrt(1. - par.es * s * s)/cos(lp_lat);
112 static inline std::string get_name()
114 return "rouss_ellipsoid";
119 // Roussilhe Stereographic
120 template <typename Parameters, typename T>
121 inline void setup_rouss(Parameters const& par, par_rouss<T>& proj_parm)
123 T N0, es2, t, t2, R_R0_2, R_R0_4;
125 if (!proj_mdist_ini(par.es, proj_parm.en))
126 BOOST_THROW_EXCEPTION( projection_exception(0) );
129 proj_parm.s0 = proj_mdist(par.phi0, es2, cos(par.phi0), proj_parm.en);
130 t = 1. - (es2 = par.es * es2 * es2);
132 R_R0_2 = t * t / par.one_es;
133 R_R0_4 = R_R0_2 * R_R0_2;
136 proj_parm.C1 = proj_parm.A1 = R_R0_2 / 4.;
137 proj_parm.C2 = proj_parm.A2 = R_R0_2 * (2 * t2 - 1. - 2. * es2) / 12.;
138 proj_parm.A3 = R_R0_2 * t * (1. + 4. * t2)/ ( 12. * N0);
139 proj_parm.A4 = R_R0_4 / 24.;
140 proj_parm.A5 = R_R0_4 * ( -1. + t2 * (11. + 12. * t2))/24.;
141 proj_parm.A6 = R_R0_4 * ( -2. + t2 * (11. - 2. * t2))/240.;
142 proj_parm.B1 = t / (2. * N0);
143 proj_parm.B2 = R_R0_2 / 12.;
144 proj_parm.B3 = R_R0_2 * (1. + 2. * t2 - 2. * es2)/4.;
145 proj_parm.B4 = R_R0_2 * t * (2. - t2)/(24. * N0);
146 proj_parm.B5 = R_R0_2 * t * (5. + 4.* t2)/(8. * N0);
147 proj_parm.B6 = R_R0_4 * (-2. + t2 * (-5. + 6. * t2))/48.;
148 proj_parm.B7 = R_R0_4 * (5. + t2 * (19. + 12. * t2))/24.;
149 proj_parm.B8 = R_R0_4 / 120.;
150 proj_parm.C3 = R_R0_2 * t * (1. + t2)/(3. * N0);
151 proj_parm.C4 = R_R0_4 * (-3. + t2 * (34. + 22. * t2))/240.;
152 proj_parm.C5 = R_R0_4 * (4. + t2 * (13. + 12. * t2))/24.;
153 proj_parm.C6 = R_R0_4 / 16.;
154 proj_parm.C7 = R_R0_4 * t * (11. + t2 * (33. + t2 * 16.))/(48. * N0);
155 proj_parm.C8 = R_R0_4 * t * (1. + t2 * 4.)/(36. * N0);
156 proj_parm.D1 = t / (2. * N0);
157 proj_parm.D2 = R_R0_2 / 12.;
158 proj_parm.D3 = R_R0_2 * (2 * t2 + 1. - 2. * es2) / 4.;
159 proj_parm.D4 = R_R0_2 * t * (1. + t2)/(8. * N0);
160 proj_parm.D5 = R_R0_2 * t * (1. + t2 * 2.)/(4. * N0);
161 proj_parm.D6 = R_R0_4 * (1. + t2 * (6. + t2 * 6.))/16.;
162 proj_parm.D7 = R_R0_4 * t2 * (3. + t2 * 4.)/8.;
163 proj_parm.D8 = R_R0_4 / 80.;
164 proj_parm.D9 = R_R0_4 * t * (-21. + t2 * (178. - t2 * 26.))/720.;
165 proj_parm.D10 = R_R0_4 * t * (29. + t2 * (86. + t2 * 48.))/(96. * N0);
166 proj_parm.D11 = R_R0_4 * t * (37. + t2 * 44.)/(96. * N0);
169 }} // namespace detail::rouss
173 \brief Roussilhe Stereographic projection
175 \tparam Geographic latlong point type
176 \tparam Cartesian xy point type
177 \tparam Parameters parameter type
178 \par Projection characteristics
182 \image html ex_rouss.gif
184 template <typename T, typename Parameters>
185 struct rouss_ellipsoid : public detail::rouss::base_rouss_ellipsoid<T, Parameters>
187 template <typename Params>
188 inline rouss_ellipsoid(Params const& , Parameters const& par)
190 detail::rouss::setup_rouss(par, this->m_proj_parm);
194 #ifndef DOXYGEN_NO_DETAIL
199 BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_rouss, rouss_ellipsoid)
202 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_FI(rouss_entry, rouss_ellipsoid)
204 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(rouss_init)
206 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(rouss, rouss_entry)
209 } // namespace detail
212 } // namespace projections
214 }} // namespace boost::geometry
216 #endif // BOOST_GEOMETRY_PROJECTIONS_ROUSS_HPP