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// Boost.Geometry
// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
// This file was modified by Oracle on 2014-2021.
// Modifications copyright (c) 2014-2021 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)
#ifndef BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_SIDE_HPP
#define BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_SIDE_HPP
#include <boost/geometry/core/cs.hpp>
#include <boost/geometry/core/access.hpp>
#include <boost/geometry/core/coordinate_promotion.hpp>
#include <boost/geometry/core/radian_access.hpp>
#include <boost/geometry/core/radius.hpp>
#include <boost/geometry/formulas/spherical.hpp>
#include <boost/geometry/srs/spheroid.hpp>
//#include <boost/geometry/strategies/concepts/side_concept.hpp>
#include <boost/geometry/strategies/geographic/disjoint_segment_box.hpp>
#include <boost/geometry/strategies/geographic/parameters.hpp>
#include <boost/geometry/strategies/side.hpp>
#include <boost/geometry/strategies/spherical/point_in_point.hpp>
#include <boost/geometry/strategy/geographic/envelope.hpp>
#include <boost/geometry/util/math.hpp>
#include <boost/geometry/util/select_calculation_type.hpp>
namespace boost { namespace geometry
{
namespace strategy { namespace side
{
/*!
\brief Check at which side of a segment a point lies
left of segment (> 0), right of segment (< 0), on segment (0)
\ingroup strategies
\tparam FormulaPolicy Geodesic solution formula policy.
\tparam Spheroid Reference model of coordinate system.
\tparam CalculationType \tparam_calculation
\qbk{
[heading See also]
[link geometry.reference.srs.srs_spheroid srs::spheroid]
}
*/
template
<
typename FormulaPolicy = strategy::andoyer,
typename Spheroid = srs::spheroid<double>,
typename CalculationType = void
>
class geographic
{
public:
typedef geographic_tag cs_tag;
geographic() = default;
explicit geographic(Spheroid const& model)
: m_model(model)
{}
template <typename P1, typename P2, typename P>
inline int apply(P1 const& p1, P2 const& p2, P const& p) const
{
typedef strategy::within::spherical_point_point equals_point_point_strategy_type;
if (equals_point_point_strategy_type::apply(p, p1)
|| equals_point_point_strategy_type::apply(p, p2)
|| equals_point_point_strategy_type::apply(p1, p2))
{
return 0;
}
typedef typename promote_floating_point
<
typename select_calculation_type_alt
<
CalculationType,
P1, P2, P
>::type
>::type calc_t;
typedef typename FormulaPolicy::template inverse
<calc_t, false, true, false, false, false> inverse_formula;
calc_t a1p = azimuth<calc_t, inverse_formula>(p1, p, m_model);
calc_t a12 = azimuth<calc_t, inverse_formula>(p1, p2, m_model);
return formula::azimuth_side_value(a1p, a12);
}
Spheroid const& model() const
{
return m_model;
}
private:
template <typename ResultType,
typename InverseFormulaType,
typename Point1,
typename Point2,
typename ModelT>
static inline ResultType azimuth(Point1 const& point1, Point2 const& point2,
ModelT const& model)
{
return InverseFormulaType::apply(get_as_radian<0>(point1),
get_as_radian<1>(point1),
get_as_radian<0>(point2),
get_as_radian<1>(point2),
model).azimuth;
}
Spheroid m_model;
};
}} // namespace strategy::side
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_SIDE_HPP
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