projections/proj/cc.hpp

0001 // Boost.Geometry - gis-projections (based on PROJ4)
0002
0003 // Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands.
0004
0005 // This file was modified by Oracle on 2017, 2018, 2019.
0006 // Modifications copyright (c) 2017-2019, Oracle and/or its affiliates.
0007 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle.
0008
0009 // Use, modification and distribution is subject to the Boost Software License,
0010 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0011 // http://www.boost.org/LICENSE_1_0.txt)
0012
0013 // This file is converted from PROJ4, http://trac.osgeo.org/proj
0014 // PROJ4 is originally written by Gerald Evenden (then of the USGS)
0015 // PROJ4 is maintained by Frank Warmerdam
0016 // PROJ4 is converted to Boost.Geometry by Barend Gehrels
0017
0018 // Last updated version of proj: 5.0.0
0019
0020 // Original copyright notice:
0021
0022 // Permission is hereby granted, free of charge, to any person obtaining a
0023 // copy of this software and associated documentation files (the "Software"),
0024 // to deal in the Software without restriction, including without limitation
0025 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
0026 // and/or sell copies of the Software, and to permit persons to whom the
0027 // Software is furnished to do so, subject to the following conditions:
0028
0029 // The above copyright notice and this permission notice shall be included
0030 // in all copies or substantial portions of the Software.
0031
0032 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
0033 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0034 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
0035 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
0036 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
0037 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
0038 // DEALINGS IN THE SOFTWARE.
0039
0040 #ifndef BOOST_GEOMETRY_PROJECTIONS_CC_HPP
0041 #define BOOST_GEOMETRY_PROJECTIONS_CC_HPP
0042
0043 #include <boost/geometry/util/math.hpp>
0044
0045 #include <boost/geometry/srs/projections/impl/base_static.hpp>
0046 #include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
0047 #include <boost/geometry/srs/projections/impl/projects.hpp>
0048 #include <boost/geometry/srs/projections/impl/factory_entry.hpp>
0049
0050 namespace boost { namespace geometry
0051 {
0052
0053 namespace projections
0054 {
0055     #ifndef DOXYGEN_NO_DETAIL
0056     namespace detail { namespace cc
0057     {
0058
0059             static const double epsilon10 = 1.e-10;
0060
0061             template <typename T, typename Parameters>
0062             struct base_cc_spheroid
0063             {
0064                 // FORWARD(s_forward)  spheroid
0065                 // Project coordinates from geographic (lon, lat) to cartesian (x, y)
0066                 inline void fwd(Parameters const& , T const& lp_lon, T const& lp_lat, T& xy_x, T& xy_y) const
0067                 {
0068                     static const T half_pi = detail::half_pi<T>();
0069
0070                     if (fabs(fabs(lp_lat) - half_pi) <= epsilon10) {
0071                         BOOST_THROW_EXCEPTION( projection_exception(error_tolerance_condition) );
0072                     }
0073                     xy_x = lp_lon;
0074                     xy_y = tan(lp_lat);
0075                 }
0076
0077                 // INVERSE(s_inverse)  spheroid
0078                 // Project coordinates from cartesian (x, y) to geographic (lon, lat)
0079                 inline void inv(Parameters const& , T const& xy_x, T const& xy_y, T& lp_lon, T& lp_lat) const
0080                 {
0081                     lp_lat = atan(xy_y);
0082                     lp_lon = xy_x;
0083                 }
0084
0085                 static inline std::string get_name()
0086                 {
0087                     return "cc_spheroid";
0088                 }
0089
0090             };
0091
0092             // Central Cylindrical
0093             template <typename Parameters>
0094             inline void setup_cc(Parameters& par)
0095             {
0096                 par.es = 0.;
0097             }
0098
0099     }} // namespace detail::cc
0100     #endif // doxygen
0101
0102     /*!
0103         \brief Central Cylindrical projection
0104         \ingroup projections
0105         \tparam Geographic latlong point type
0106         \tparam Cartesian xy point type
0107         \tparam Parameters parameter type
0108         \par Projection characteristics
0109          - Cylindrical
0110          - Spheroid
0111         \par Example
0112         \image html ex_cc.gif
0113     */
0114     template <typename T, typename Parameters>
0115     struct cc_spheroid : public detail::cc::base_cc_spheroid<T, Parameters>
0116     {
0117         template <typename Params>
0118         inline cc_spheroid(Params const& , Parameters & par)
0119         {
0120             detail::cc::setup_cc(par);
0121         }
0122     };
0123
0124     #ifndef DOXYGEN_NO_DETAIL
0125     namespace detail
0126     {
0127
0128         // Static projection
0129         BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_cc, cc_spheroid)
0130
0131         // Factory entry(s)
0132         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_FI(cc_entry, cc_spheroid)
0133
0134         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(cc_init)
0135         {
0136             BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(cc, cc_entry);
0137         }
0138
0139     } // namespace detail
0140     #endif // doxygen
0141
0142 } // namespace projections
0143
0144 }} // namespace boost::geometry
0145
0146 #endif // BOOST_GEOMETRY_PROJECTIONS_CC_HPP
0147