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Diffstat (limited to 'boost/geometry/srs/projections/proj/ortho.hpp')
| -rw-r--r-- | boost/geometry/srs/projections/proj/ortho.hpp | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/boost/geometry/srs/projections/proj/ortho.hpp b/boost/geometry/srs/projections/proj/ortho.hpp new file mode 100644 index 0000000000..4510f9dab9 --- /dev/null +++ b/boost/geometry/srs/projections/proj/ortho.hpp @@ -0,0 +1,257 @@ +#ifndef BOOST_GEOMETRY_PROJECTIONS_ORTHO_HPP +#define BOOST_GEOMETRY_PROJECTIONS_ORTHO_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, 2018. +// Modifications copyright (c) 2017-2018, 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/config.hpp> +#include <boost/geometry/util/math.hpp> +#include <boost/math/special_functions/hypot.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 ortho {}; + +}} //namespace srs::par4 + +namespace projections +{ + #ifndef DOXYGEN_NO_DETAIL + namespace detail { namespace ortho + { + + static const double EPS10 = 1.e-10; + static const int N_POLE = 0; + static const int S_POLE = 1; + static const int EQUIT = 2; + static const int OBLIQ = 3; + + template <typename T> + struct par_ortho + { + T sinph0; + T cosph0; + int mode; + }; + + // template class, using CRTP to implement forward/inverse + template <typename CalculationType, typename Parameters> + struct base_ortho_spheroid : public base_t_fi<base_ortho_spheroid<CalculationType, Parameters>, + CalculationType, Parameters> + { + + typedef CalculationType geographic_type; + typedef CalculationType cartesian_type; + + par_ortho<CalculationType> m_proj_parm; + + inline base_ortho_spheroid(const Parameters& par) + : base_t_fi<base_ortho_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 + { + static const CalculationType HALFPI = detail::HALFPI<CalculationType>(); + + CalculationType coslam, cosphi, sinphi; + + cosphi = cos(lp_lat); + coslam = cos(lp_lon); + switch (this->m_proj_parm.mode) { + case EQUIT: + if (cosphi * coslam < - EPS10) + BOOST_THROW_EXCEPTION( projection_exception(-20) ); + xy_y = sin(lp_lat); + break; + case OBLIQ: + if (this->m_proj_parm.sinph0 * (sinphi = sin(lp_lat)) + + this->m_proj_parm.cosph0 * cosphi * coslam < - EPS10) + BOOST_THROW_EXCEPTION( projection_exception(-20) ); + xy_y = this->m_proj_parm.cosph0 * sinphi - this->m_proj_parm.sinph0 * cosphi * coslam; + break; + case N_POLE: + coslam = - coslam; + BOOST_FALLTHROUGH; + case S_POLE: + if (fabs(lp_lat - this->m_par.phi0) - EPS10 > HALFPI) + BOOST_THROW_EXCEPTION( projection_exception(-20) ); + xy_y = cosphi * coslam; + break; + } + xy_x = cosphi * sin(lp_lon); + } + + // 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>(); + + CalculationType rh, cosc, sinc; + + if ((sinc = (rh = boost::math::hypot(xy_x, xy_y))) > 1.) { + if ((sinc - 1.) > EPS10) + BOOST_THROW_EXCEPTION( projection_exception(-20) ); + sinc = 1.; + } + cosc = sqrt(1. - sinc * sinc); /* in this range OK */ + if (fabs(rh) <= EPS10) { + lp_lat = this->m_par.phi0; + lp_lon = 0.0; + } else { + switch (this->m_proj_parm.mode) { + case N_POLE: + xy_y = -xy_y; + lp_lat = acos(sinc); + break; + case S_POLE: + lp_lat = - acos(sinc); + break; + case EQUIT: + lp_lat = xy_y * sinc / rh; + xy_x *= sinc; + xy_y = cosc * rh; + goto sinchk; + case OBLIQ: + lp_lat = cosc * this->m_proj_parm.sinph0 + xy_y * sinc * this->m_proj_parm.cosph0 /rh; + xy_y = (cosc - this->m_proj_parm.sinph0 * lp_lat) * rh; + xy_x *= sinc * this->m_proj_parm.cosph0; + sinchk: + if (fabs(lp_lat) >= 1.) + lp_lat = lp_lat < 0. ? -HALFPI : HALFPI; + else + lp_lat = asin(lp_lat); + break; + } + lp_lon = (xy_y == 0. && (this->m_proj_parm.mode == OBLIQ || this->m_proj_parm.mode == EQUIT)) + ? (xy_x == 0. ? 0. : xy_x < 0. ? -HALFPI : HALFPI) + : atan2(xy_x, xy_y); + } + } + + static inline std::string get_name() + { + return "ortho_spheroid"; + } + + }; + + // Orthographic + template <typename Parameters, typename T> + inline void setup_ortho(Parameters& par, par_ortho<T>& proj_parm) + { + if (fabs(fabs(par.phi0) - geometry::math::half_pi<T>()) <= EPS10) + proj_parm.mode = par.phi0 < 0. ? S_POLE : N_POLE; + else if (fabs(par.phi0) > EPS10) { + proj_parm.mode = OBLIQ; + proj_parm.sinph0 = sin(par.phi0); + proj_parm.cosph0 = cos(par.phi0); + } else + proj_parm.mode = EQUIT; + par.es = 0.; + } + + }} // namespace detail::ortho + #endif // doxygen + + /*! + \brief Orthographic projection + \ingroup projections + \tparam Geographic latlong point type + \tparam Cartesian xy point type + \tparam Parameters parameter type + \par Projection characteristics + - Azimuthal + - Spheroid + \par Example + \image html ex_ortho.gif + */ + template <typename CalculationType, typename Parameters> + struct ortho_spheroid : public detail::ortho::base_ortho_spheroid<CalculationType, Parameters> + { + inline ortho_spheroid(const Parameters& par) : detail::ortho::base_ortho_spheroid<CalculationType, Parameters>(par) + { + detail::ortho::setup_ortho(this->m_par, this->m_proj_parm); + } + }; + + #ifndef DOXYGEN_NO_DETAIL + namespace detail + { + + // Static projection + BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION(srs::par4::ortho, ortho_spheroid, ortho_spheroid) + + // Factory entry(s) + template <typename CalculationType, typename Parameters> + class ortho_entry : public detail::factory_entry<CalculationType, Parameters> + { + public : + virtual base_v<CalculationType, Parameters>* create_new(const Parameters& par) const + { + return new base_v_fi<ortho_spheroid<CalculationType, Parameters>, CalculationType, Parameters>(par); + } + }; + + template <typename CalculationType, typename Parameters> + inline void ortho_init(detail::base_factory<CalculationType, Parameters>& factory) + { + factory.add_to_factory("ortho", new ortho_entry<CalculationType, Parameters>); + } + + } // namespace detail + #endif // doxygen + +} // namespace projections + +}} // namespace boost::geometry + +#endif // BOOST_GEOMETRY_PROJECTIONS_ORTHO_HPP + |