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// Boost.Geometry
// Copyright (c) 2020-2021, Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Licensed under the Boost Software License version 1.0.
// http://www.boost.org/users/license.html
#ifndef BOOST_GEOMETRY_STRATEGIES_AREA_GEOGRAPHIC_HPP
#define BOOST_GEOMETRY_STRATEGIES_AREA_GEOGRAPHIC_HPP
#include <boost/geometry/strategy/geographic/area.hpp>
#include <boost/geometry/strategy/geographic/area_box.hpp>
#include <boost/geometry/strategies/area/services.hpp>
#include <boost/geometry/strategies/detail.hpp>
namespace boost { namespace geometry
{
namespace strategies { namespace area
{
template
<
typename FormulaPolicy = strategy::andoyer,
typename Spheroid = srs::spheroid<double>,
typename CalculationType = void
>
class geographic
: public strategies::detail::geographic_base<Spheroid>
{
using base_t = strategies::detail::geographic_base<Spheroid>;
public:
geographic() = default;
explicit geographic(Spheroid const& spheroid)
: base_t(spheroid)
{}
template <typename Geometry>
auto area(Geometry const&,
std::enable_if_t<! util::is_box<Geometry>::value> * = nullptr) const
{
return strategy::area::geographic
<
FormulaPolicy,
strategy::default_order<FormulaPolicy>::value,
Spheroid, CalculationType
>(base_t::m_spheroid);
}
template <typename Geometry>
auto area(Geometry const&,
std::enable_if_t<util::is_box<Geometry>::value> * = nullptr) const
{
return strategy::area::geographic_box
<
Spheroid, CalculationType
>(base_t::m_spheroid);
}
};
namespace services
{
template <typename Geometry>
struct default_strategy<Geometry, geographic_tag>
{
using type = strategies::area::geographic<>;
};
template <typename FP, std::size_t SO, typename S, typename CT>
struct strategy_converter<strategy::area::geographic<FP, SO, S, CT> >
{
struct altered_strategy
: strategies::area::geographic<FP, S, CT>
{
explicit altered_strategy(S const& spheroid)
: strategies::area::geographic<FP, S, CT>(spheroid)
{}
using strategies::area::geographic<FP, S, CT>::area;
template <typename Geometry>
auto area(Geometry const&,
std::enable_if_t<! util::is_box<Geometry>::value> * = nullptr) const
{
return strategy::area::geographic<FP, SO, S, CT>(this->m_spheroid);
}
};
static auto get(strategy::area::geographic<FP, SO, S, CT> const& strategy)
{
return altered_strategy(strategy.model());
}
};
} // namespace services
}} // namespace strategies::area
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_STRATEGIES_AREA_GEOGRAPHIC_HPP
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