Added thirdparty: boost library

2026-08-17 12:48:11 +00:00 · 2024-01-06 19:55:56 +02:00
parent bf49f439e1
commit bccd1e7051
15683 changed files with 3239840 additions and 0 deletions
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+// Boost.Geometry
+
+// Copyright (c) 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_CENTROID_CARTESIAN_HPP
+#define BOOST_GEOMETRY_STRATEGIES_CENTROID_CARTESIAN_HPP
+
+
+#include <boost/geometry/strategies/cartesian/centroid_average.hpp>
+#include <boost/geometry/strategies/cartesian/centroid_bashein_detmer.hpp>
+#include <boost/geometry/strategies/cartesian/centroid_weighted_length.hpp>
+
+#include <boost/geometry/strategies/detail.hpp>
+#include <boost/geometry/strategies/centroid/services.hpp>
+
+#include <boost/geometry/util/type_traits.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+namespace strategies { namespace centroid
+{
+
+template <typename CalculationType = void>
+struct cartesian
+    : public strategies::detail::cartesian_base
+{
+    template <typename Geometry>
+    static auto centroid(Geometry const&,
+                         std::enable_if_t
+                            <
+                                util::is_pointlike<Geometry>::value
+                            > * = nullptr)
+    {
+        return strategy::centroid::average<>();
+    }
+
+    template <typename Geometry>
+    static auto centroid(Geometry const&,
+                         std::enable_if_t
+                            <
+                                util::is_polylinear<Geometry>::value
+                            > * = nullptr)
+    {
+        return strategy::centroid::weighted_length<void, void, CalculationType>();
+    }
+
+    template <typename Geometry>
+    static auto centroid(Geometry const&,
+                         std::enable_if_t
+                            <
+                                util::is_polygonal<Geometry>::value
+                             // TODO: This condition was used for the legacy default strategy
+                             // && geometry::dimension<Geometry>::value == 2
+                            > * = nullptr)
+    {
+        return strategy::centroid::bashein_detmer<void, void, CalculationType>();
+    }
+
+    // TODO: Box and Segment should have proper strategies.
+    template <typename Geometry, typename Point>
+    static auto centroid(Geometry const&, Point const&,
+                         std::enable_if_t
+                            <
+                                util::is_segment<Geometry>::value
+                             || util::is_box<Geometry>::value
+                            > * = nullptr)
+    {
+        return strategy::centroid::not_applicable_strategy();
+    }
+};
+
+
+namespace services
+{
+
+template <typename Geometry>
+struct default_strategy<Geometry, cartesian_tag>
+{
+    using type = strategies::centroid::cartesian<>;
+};
+
+
+template <typename PC, typename PG>
+struct strategy_converter<strategy::centroid::average<PC, PG> >
+{
+    static auto get(strategy::centroid::average<PC, PG> const&)
+    {
+        return strategies::centroid::cartesian<>();
+    }
+};
+
+template <typename PC, typename PG>
+struct strategy_converter<strategy::centroid::weighted_length<PC, PG> >
+{
+    static auto get(strategy::centroid::weighted_length<PC, PG> const&)
+    {
+        return strategies::centroid::cartesian<>();
+    }
+};
+
+template <typename PC, typename PG, typename CT>
+struct strategy_converter<strategy::centroid::bashein_detmer<PC, PG, CT> >
+{
+    static auto get(strategy::centroid::bashein_detmer<PC, PG, CT> const&)
+    {
+        return strategies::centroid::cartesian<CT>();
+    }
+};
+
+} // namespace services
+
+}} // namespace strategies::centroid
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_STRATEGIES_CENTROID_CARTESIAN_HPP