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Diffstat (limited to 'boost/geometry/srs/projections/proj/eck2.hpp')
| -rw-r--r-- | boost/geometry/srs/projections/proj/eck2.hpp | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/boost/geometry/srs/projections/proj/eck2.hpp b/boost/geometry/srs/projections/proj/eck2.hpp new file mode 100644 index 0000000000..737057bfcd --- /dev/null +++ b/boost/geometry/srs/projections/proj/eck2.hpp @@ -0,0 +1,184 @@ +#ifndef BOOST_GEOMETRY_PROJECTIONS_ECK2_HPP +#define BOOST_GEOMETRY_PROJECTIONS_ECK2_HPP + +// Boost.Geometry - extensions-gis-projections (based on PROJ4) +// This file is automatically generated. DO NOT EDIT. + +// Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands. + +// This file was modified by Oracle on 2017. +// Modifications copyright (c) 2017, Oracle and/or its affiliates. +// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle. + +// Use, modification and distribution is subject to the Boost Software License, +// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) + +// This file is converted from PROJ4, http://trac.osgeo.org/proj +// PROJ4 is originally written by Gerald Evenden (then of the USGS) +// PROJ4 is maintained by Frank Warmerdam +// PROJ4 is converted to Boost.Geometry by Barend Gehrels + +// Last updated version of proj: 4.9.1 + +// Original copyright notice: + +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the "Software"), +// to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, +// and/or sell copies of the Software, and to permit persons to whom the +// Software is furnished to do so, subject to the following conditions: + +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. + +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +// DEALINGS IN THE SOFTWARE. + +#include <boost/geometry/util/math.hpp> + +#include <boost/geometry/srs/projections/impl/base_static.hpp> +#include <boost/geometry/srs/projections/impl/base_dynamic.hpp> +#include <boost/geometry/srs/projections/impl/projects.hpp> +#include <boost/geometry/srs/projections/impl/factory_entry.hpp> + +namespace boost { namespace geometry +{ + +namespace srs { namespace par4 +{ + struct eck2 {}; + +}} //namespace srs::par4 + +namespace projections +{ + #ifndef DOXYGEN_NO_DETAIL + namespace detail { namespace eck2 + { + + static const double FXC = 0.46065886596178063902; + static const double FYC = 1.44720250911653531871; + //static const double C13 = 0.33333333333333333333; + static const double ONEEPS = 1.0000001; + + // template class, using CRTP to implement forward/inverse + template <typename CalculationType, typename Parameters> + struct base_eck2_spheroid : public base_t_fi<base_eck2_spheroid<CalculationType, Parameters>, + CalculationType, Parameters> + { + + typedef CalculationType geographic_type; + typedef CalculationType cartesian_type; + + + inline base_eck2_spheroid(const Parameters& par) + : base_t_fi<base_eck2_spheroid<CalculationType, Parameters>, + CalculationType, Parameters>(*this, par) {} + + // FORWARD(s_forward) spheroid + // Project coordinates from geographic (lon, lat) to cartesian (x, y) + inline void fwd(geographic_type& lp_lon, geographic_type& lp_lat, cartesian_type& xy_x, cartesian_type& xy_y) const + { + xy_x = FXC * lp_lon * (xy_y = sqrt(4. - 3. * sin(fabs(lp_lat)))); + xy_y = FYC * (2. - xy_y); + if ( lp_lat < 0.) xy_y = -xy_y; + } + + // INVERSE(s_inverse) spheroid + // Project coordinates from cartesian (x, y) to geographic (lon, lat) + inline void inv(cartesian_type& xy_x, cartesian_type& xy_y, geographic_type& lp_lon, geographic_type& lp_lat) const + { + static const CalculationType HALFPI = detail::HALFPI<CalculationType>(); + static const CalculationType C13 = detail::THIRD<CalculationType>(); + + lp_lon = xy_x / (FXC * ( lp_lat = 2. - fabs(xy_y) / FYC) ); + lp_lat = (4. - lp_lat * lp_lat) * C13; + if (fabs(lp_lat) >= 1.) { + if (fabs(lp_lat) > ONEEPS) + BOOST_THROW_EXCEPTION( projection_exception(-20) ); + else + lp_lat = lp_lat < 0. ? -HALFPI : HALFPI; + } else + lp_lat = asin(lp_lat); + if (xy_y < 0) + lp_lat = -lp_lat; + } + + static inline std::string get_name() + { + return "eck2_spheroid"; + } + + }; + + // Eckert II + template <typename Parameters> + inline void setup_eck2(Parameters& par) + { + par.es = 0.; + } + + }} // namespace detail::eck2 + #endif // doxygen + + /*! + \brief Eckert II projection + \ingroup projections + \tparam Geographic latlong point type + \tparam Cartesian xy point type + \tparam Parameters parameter type + \par Projection characteristics + - Pseudocylindrical + - Spheroid + \par Example + \image html ex_eck2.gif + */ + template <typename CalculationType, typename Parameters> + struct eck2_spheroid : public detail::eck2::base_eck2_spheroid<CalculationType, Parameters> + { + inline eck2_spheroid(const Parameters& par) : detail::eck2::base_eck2_spheroid<CalculationType, Parameters>(par) + { + detail::eck2::setup_eck2(this->m_par); + } + }; + + #ifndef DOXYGEN_NO_DETAIL + namespace detail + { + + // Static projection + BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION(srs::par4::eck2, eck2_spheroid, eck2_spheroid) + + // Factory entry(s) + template <typename CalculationType, typename Parameters> + class eck2_entry : public detail::factory_entry<CalculationType, Parameters> + { + public : + virtual base_v<CalculationType, Parameters>* create_new(const Parameters& par) const + { + return new base_v_fi<eck2_spheroid<CalculationType, Parameters>, CalculationType, Parameters>(par); + } + }; + + template <typename CalculationType, typename Parameters> + inline void eck2_init(detail::base_factory<CalculationType, Parameters>& factory) + { + factory.add_to_factory("eck2", new eck2_entry<CalculationType, Parameters>); + } + + } // namespace detail + #endif // doxygen + +} // namespace projections + +}} // namespace boost::geometry + +#endif // BOOST_GEOMETRY_PROJECTIONS_ECK2_HPP + |