Imported Upstream version 1.64.0

[platform/upstream/boost.git] / boost / geometry / algorithms / detail / is_simple / interface.hpp

diff --git a/boost/geometry/algorithms/detail/is_simple/interface.hpp b/boost/geometry/algorithms/detail/is_simple/interface.hpp
index 6d42523..af0127d 100644 (file)
--- a/boost/geometry/algorithms/detail/is_simple/interface.hpp
+++ b/boost/geometry/algorithms/detail/is_simple/interface.hpp
@@ -1,8 +1,9 @@
 // Boost.Geometry (aka GGL, Generic Geometry Library)
 
-// Copyright (c) 2014, Oracle and/or its affiliates.
+// Copyright (c) 2014-2017, Oracle and/or its affiliates.
 
 // 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
@@ -17,46 +18,106 @@
 #include <boost/geometry/geometries/concepts/check.hpp>
 
 #include <boost/geometry/algorithms/dispatch/is_simple.hpp>
+#include <boost/geometry/core/cs.hpp>
+#include <boost/geometry/strategies/default_strategy.hpp>
+#include <boost/geometry/strategies/intersection.hpp>
 
 
 namespace boost { namespace geometry
 {
 
+namespace resolve_strategy
+{
+
+struct is_simple
+{
+    template <typename Geometry, typename Strategy>
+    static inline bool apply(Geometry const& geometry,
+                             Strategy const& strategy)
+    {
+        return dispatch::is_simple<Geometry>::apply(geometry, strategy);
+    }
+
+    template <typename Geometry>
+    static inline bool apply(Geometry const& geometry,
+                             default_strategy)
+    {
+        // NOTE: Currently the strategy is only used for Linear geometries
+        typedef typename strategy::intersection::services::default_strategy
+            <
+                typename cs_tag<Geometry>::type
+            >::type strategy_type;
+
+        return dispatch::is_simple<Geometry>::apply(geometry, strategy_type());
+    }
+};
 
-namespace resolve_variant {
+} // namespace resolve_strategy
+
+namespace resolve_variant
+{
 
 template <typename Geometry>
 struct is_simple
 {
-    static inline bool apply(Geometry const& geometry)
+    template <typename Strategy>
+    static inline bool apply(Geometry const& geometry, Strategy const& strategy)
     {
         concepts::check<Geometry const>();
-        return dispatch::is_simple<Geometry>::apply(geometry);
+
+        return resolve_strategy::is_simple::apply(geometry, strategy);
     }
 };
 
 template <BOOST_VARIANT_ENUM_PARAMS(typename T)>
 struct is_simple<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
 {
+    template <typename Strategy>
     struct visitor : boost::static_visitor<bool>
     {
+        Strategy const& m_strategy;
+
+        visitor(Strategy const& strategy)
+            : m_strategy(strategy)
+        {}
+
         template <typename Geometry>
         bool operator()(Geometry const& geometry) const
         {
-            return is_simple<Geometry>::apply(geometry);
+            return is_simple<Geometry>::apply(geometry, m_strategy);
         }
     };
 
+    template <typename Strategy>
     static inline bool
-    apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry)
+    apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry,
+          Strategy const& strategy)
     {
-        return boost::apply_visitor(visitor(), geometry);
+        return boost::apply_visitor(visitor<Strategy>(strategy), geometry);
     }
 };
 
 } // namespace resolve_variant
 
 
+/*!
+\brief \brief_check{is simple}
+\ingroup is_simple
+\tparam Geometry \tparam_geometry
+\tparam Strategy \tparam_strategy{Is_simple}
+\param geometry \param_geometry
+\param strategy \param_strategy{is_simple}
+\return \return_check{is simple}
+
+\qbk{distinguish,with strategy}
+\qbk{[include reference/algorithms/is_simple.qbk]}
+*/
+template <typename Geometry, typename Strategy>
+inline bool is_simple(Geometry const& geometry, Strategy const& strategy)
+{
+    return resolve_variant::is_simple<Geometry>::apply(geometry, strategy);
+}
+
 
 /*!
 \brief \brief_check{is simple}
@@ -70,7 +131,7 @@ struct is_simple<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
 template <typename Geometry>
 inline bool is_simple(Geometry const& geometry)
 {
-    return resolve_variant::is_simple<Geometry>::apply(geometry);
+    return resolve_variant::is_simple<Geometry>::apply(geometry, default_strategy());
 }