Added thirdparty: boost library

thirdparty/include/boost/geometry/policies/predicate_based_interrupt_policy.hpp

@@ -0,0 +1,110 @@
+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2014-2023, Oracle and/or its affiliates.
+
+// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
+// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
+// 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_ALGORITHMS_POLICIES_PREDICATE_BASED_INTERRUPT_POLICY_HPP
+#define BOOST_GEOMETRY_ALGORITHMS_POLICIES_PREDICATE_BASED_INTERRUPT_POLICY_HPP
+
+#include <algorithm>
+
+#include <boost/range/begin.hpp>
+#include <boost/range/empty.hpp>
+#include <boost/range/end.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+
+#ifndef DOXYGEN_NO_DETAIL
+namespace detail { namespace overlay
+{
+
+
+template
+<
+    typename IsAcceptableTurnPredicate,
+    bool AllowEmptyTurnRange = true // by default, allow an empty turn range
+>
+struct stateless_predicate_based_interrupt_policy
+{
+    static bool const enabled = true;
+    bool has_intersections; // set to true if there is at least one
+                            // unacceptable turn
+
+    inline stateless_predicate_based_interrupt_policy()
+        : has_intersections(false)
+    {}
+
+    template <typename Range>
+    inline bool apply(Range const& range)
+    {
+        // if there is at least one unacceptable turn in the range, return true
+        bool const has_unacceptable_turn = std::any_of(boost::begin(range), boost::end(range),
+            [](auto const& turn) {
+                return ! IsAcceptableTurnPredicate::apply(turn);
+            });
+
+        has_intersections = has_unacceptable_turn
+                && !(AllowEmptyTurnRange && boost::empty(range));
+
+        return has_intersections;
+    }
+};
+
+
+
+
+template
+<
+    typename IsAcceptableTurnPredicate,
+    bool AllowEmptyTurnRange = true // by default, allow an empty turn range
+>
+struct predicate_based_interrupt_policy
+{
+    static bool const enabled = true;
+    bool has_intersections; // set to true if there is at least one
+                            // unacceptable turn
+    IsAcceptableTurnPredicate const& m_predicate;
+
+    inline
+    predicate_based_interrupt_policy(IsAcceptableTurnPredicate const& predicate)
+        : has_intersections(false)
+        , m_predicate(predicate)
+    {}
+
+    template <typename Range>
+    inline bool apply(Range const& range)
+    {
+        // if there is at least one unacceptable turn in the range, return true
+        bool const has_unacceptable_turn = std::any_of(boost::begin(range),
+                                                       boost::end(range),
+                                                       [&]( auto const& turn ) {
+                                                           return ! m_predicate.apply(turn);
+                                                       });
+
+        has_intersections = has_unacceptable_turn
+            && !(AllowEmptyTurnRange && boost::empty(range));
+
+        return has_intersections;
+    }
+};
+
+
+
+
+}} // namespace detail::overlay
+#endif // DOXYGEN_NO_DETAIL
+
+
+}} // namespace boost::geometry
+
+
+#endif // BOOST_GEOMETRY_ALGORITHMS_POLICIES_PREDICATE_BASED_INTERRUPT_POLICY_HPP