Added thirdparty: boost library

thirdparty/include/boost/geometry/strategies/area/spherical.hpp

@@ -0,0 +1,107 @@
+// 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_SPHERICAL_HPP
+#define BOOST_GEOMETRY_STRATEGIES_AREA_SPHERICAL_HPP
+
+
+#include <boost/geometry/strategy/spherical/area.hpp>
+#include <boost/geometry/strategy/spherical/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 RadiusTypeOrSphere = double,
+    typename CalculationType = void
+>
+class spherical
+    : public strategies::detail::spherical_base<RadiusTypeOrSphere>
+{
+    using base_t = strategies::detail::spherical_base<RadiusTypeOrSphere>;
+
+public:
+    spherical()
+        : base_t()
+    {}
+
+    template <typename RadiusOrSphere>
+    explicit spherical(RadiusOrSphere const& radius_or_sphere)
+        : base_t(radius_or_sphere)
+    {}
+
+    template <typename Geometry>
+    auto area(Geometry const&,
+              std::enable_if_t<! util::is_box<Geometry>::value> * = nullptr) const
+    {
+        return strategy::area::spherical
+            <
+                typename base_t::radius_type, CalculationType
+            >(base_t::m_radius);
+    }
+
+    template <typename Geometry>
+    auto area(Geometry const&,
+              std::enable_if_t<util::is_box<Geometry>::value> * = nullptr) const
+    {
+        return strategy::area::spherical_box
+            <
+                typename base_t::radius_type, CalculationType
+            >(base_t::m_radius);
+    }
+};
+
+
+namespace services
+{
+
+template <typename Geometry>
+struct default_strategy<Geometry, spherical_tag>
+{
+    using type = strategies::area::spherical<>;
+};
+
+template <typename Geometry>
+struct default_strategy<Geometry, spherical_equatorial_tag>
+{
+    using type = strategies::area::spherical<>;
+};
+
+template <typename Geometry>
+struct default_strategy<Geometry, spherical_polar_tag>
+{
+    using type = strategies::area::spherical<>;
+};
+
+
+template <typename R, typename CT>
+struct strategy_converter<strategy::area::spherical<R, CT> >
+{
+    static auto get(strategy::area::spherical<R, CT> const& strategy)
+    {
+        return strategies::area::spherical<R, CT>(strategy.model());
+    }
+};
+
+
+} // namespace services
+
+}} // namespace strategies::area
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_STRATEGIES_AREA_SPHERICAL_HPP