cc.hpp 5.1 KB

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  1. // Boost.Geometry - gis-projections (based on PROJ4)
  2. // Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands.
  3. // This file was modified by Oracle on 2017, 2018, 2019.
  4. // Modifications copyright (c) 2017-2019, Oracle and/or its affiliates.
  5. // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle.
  6. // Use, modification and distribution is subject to the Boost Software License,
  7. // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  8. // http://www.boost.org/LICENSE_1_0.txt)
  9. // This file is converted from PROJ4, http://trac.osgeo.org/proj
  10. // PROJ4 is originally written by Gerald Evenden (then of the USGS)
  11. // PROJ4 is maintained by Frank Warmerdam
  12. // PROJ4 is converted to Boost.Geometry by Barend Gehrels
  13. // Last updated version of proj: 5.0.0
  14. // Original copyright notice:
  15. // Permission is hereby granted, free of charge, to any person obtaining a
  16. // copy of this software and associated documentation files (the "Software"),
  17. // to deal in the Software without restriction, including without limitation
  18. // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  19. // and/or sell copies of the Software, and to permit persons to whom the
  20. // Software is furnished to do so, subject to the following conditions:
  21. // The above copyright notice and this permission notice shall be included
  22. // in all copies or substantial portions of the Software.
  23. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  24. // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  25. // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  26. // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  27. // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  28. // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  29. // DEALINGS IN THE SOFTWARE.
  30. #ifndef BOOST_GEOMETRY_PROJECTIONS_CC_HPP
  31. #define BOOST_GEOMETRY_PROJECTIONS_CC_HPP
  32. #include <boost/geometry/util/math.hpp>
  33. #include <boost/geometry/srs/projections/impl/base_static.hpp>
  34. #include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
  35. #include <boost/geometry/srs/projections/impl/projects.hpp>
  36. #include <boost/geometry/srs/projections/impl/factory_entry.hpp>
  37. namespace boost { namespace geometry
  38. {
  39. namespace projections
  40. {
  41. #ifndef DOXYGEN_NO_DETAIL
  42. namespace detail { namespace cc
  43. {
  44. static const double epsilon10 = 1.e-10;
  45. template <typename T, typename Parameters>
  46. struct base_cc_spheroid
  47. {
  48. // FORWARD(s_forward) spheroid
  49. // Project coordinates from geographic (lon, lat) to cartesian (x, y)
  50. inline void fwd(Parameters const& , T const& lp_lon, T const& lp_lat, T& xy_x, T& xy_y) const
  51. {
  52. static const T half_pi = detail::half_pi<T>();
  53. if (fabs(fabs(lp_lat) - half_pi) <= epsilon10) {
  54. BOOST_THROW_EXCEPTION( projection_exception(error_tolerance_condition) );
  55. }
  56. xy_x = lp_lon;
  57. xy_y = tan(lp_lat);
  58. }
  59. // INVERSE(s_inverse) spheroid
  60. // Project coordinates from cartesian (x, y) to geographic (lon, lat)
  61. inline void inv(Parameters const& , T const& xy_x, T const& xy_y, T& lp_lon, T& lp_lat) const
  62. {
  63. lp_lat = atan(xy_y);
  64. lp_lon = xy_x;
  65. }
  66. static inline std::string get_name()
  67. {
  68. return "cc_spheroid";
  69. }
  70. };
  71. // Central Cylindrical
  72. template <typename Parameters>
  73. inline void setup_cc(Parameters& par)
  74. {
  75. par.es = 0.;
  76. }
  77. }} // namespace detail::cc
  78. #endif // doxygen
  79. /*!
  80. \brief Central Cylindrical projection
  81. \ingroup projections
  82. \tparam Geographic latlong point type
  83. \tparam Cartesian xy point type
  84. \tparam Parameters parameter type
  85. \par Projection characteristics
  86. - Cylindrical
  87. - Spheroid
  88. \par Example
  89. \image html ex_cc.gif
  90. */
  91. template <typename T, typename Parameters>
  92. struct cc_spheroid : public detail::cc::base_cc_spheroid<T, Parameters>
  93. {
  94. template <typename Params>
  95. inline cc_spheroid(Params const& , Parameters & par)
  96. {
  97. detail::cc::setup_cc(par);
  98. }
  99. };
  100. #ifndef DOXYGEN_NO_DETAIL
  101. namespace detail
  102. {
  103. // Static projection
  104. BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_cc, cc_spheroid)
  105. // Factory entry(s)
  106. BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_FI(cc_entry, cc_spheroid)
  107. BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(cc_init)
  108. {
  109. BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(cc, cc_entry);
  110. }
  111. } // namespace detail
  112. #endif // doxygen
  113. } // namespace projections
  114. }} // namespace boost::geometry
  115. #endif // BOOST_GEOMETRY_PROJECTIONS_CC_HPP