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#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
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