1 // Boost.Geometry - gis-projections (based on PROJ4) 2 3 // Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands. 4 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. 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 18 // Last updated version of proj: 5.0.0 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 40 #ifndef BOOST_GEOMETRY_PROJECTIONS_CRAST_HPP 41 #define BOOST_GEOMETRY_PROJECTIONS_CRAST_HPP 42 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> 47 48 namespace boost { namespace geometry 49 { 50 51 namespace projections 52 { 53 #ifndef DOXYGEN_NO_DETAIL 54 namespace detail { namespace crast 55 { 56 57 static const double XM = 0.97720502380583984317; 58 static const double RXM = 1.02332670794648848847; 59 static const double YM = 3.06998012383946546542; 60 static const double RYM = 0.32573500793527994772; 61 //static const double third = 0.333333333333333333; 62 63 template <typename T, typename Parameters> 64 struct base_crast_spheroid 65 { 66 // FORWARD(s_forward) spheroid 67 // Project coordinates from geographic (lon, lat) to cartesian (x, y) fwdboost::geometry::projections::detail::crast::base_crast_spheroid68 inline void fwd(Parameters const& , T const& lp_lon, T lp_lat, T& xy_x, T& xy_y) const 69 { 70 static const T third = detail::third<T>(); 71 72 lp_lat *= third; 73 xy_x = XM * lp_lon * (2. * cos(lp_lat + lp_lat) - 1.); 74 xy_y = YM * sin(lp_lat); 75 } 76 77 // INVERSE(s_inverse) spheroid 78 // Project coordinates from cartesian (x, y) to geographic (lon, lat) invboost::geometry::projections::detail::crast::base_crast_spheroid79 inline void inv(Parameters const& , T const& xy_x, T const& xy_y, T& lp_lon, T& lp_lat) const 80 { 81 static const T third = detail::third<T>(); 82 83 lp_lat = 3. * asin(xy_y * RYM); 84 lp_lon = xy_x * RXM / (2. * cos((lp_lat + lp_lat) * third) - 1); 85 } 86 get_nameboost::geometry::projections::detail::crast::base_crast_spheroid87 static inline std::string get_name() 88 { 89 return "crast_spheroid"; 90 } 91 92 }; 93 94 // Craster Parabolic (Putnins P4) 95 template <typename Parameters> setup_crast(Parameters & par)96 inline void setup_crast(Parameters& par) 97 { 98 par.es = 0.; 99 } 100 101 }} // namespace detail::crast 102 #endif // doxygen 103 104 /*! 105 \brief Craster Parabolic (Putnins P4) projection 106 \ingroup projections 107 \tparam Geographic latlong point type 108 \tparam Cartesian xy point type 109 \tparam Parameters parameter type 110 \par Projection characteristics 111 - Pseudocylindrical 112 - Spheroid 113 \par Example 114 \image html ex_crast.gif 115 */ 116 template <typename T, typename Parameters> 117 struct crast_spheroid : public detail::crast::base_crast_spheroid<T, Parameters> 118 { 119 template <typename Params> crast_spheroidboost::geometry::projections::crast_spheroid120 inline crast_spheroid(Params const& , Parameters & par) 121 { 122 detail::crast::setup_crast(par); 123 } 124 }; 125 126 #ifndef DOXYGEN_NO_DETAIL 127 namespace detail 128 { 129 130 // Static projection BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_crast,crast_spheroid)131 BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_crast, crast_spheroid) 132 133 // Factory entry(s) 134 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_FI(crast_entry, crast_spheroid) 135 136 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(crast_init) 137 { 138 BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(crast, crast_entry); 139 } 140 141 } // namespace detail 142 #endif // doxygen 143 144 } // namespace projections 145 146 }} // namespace boost::geometry 147 148 #endif // BOOST_GEOMETRY_PROJECTIONS_CRAST_HPP 149 150