add boost on mac

macx64/include/boost/geometry/policies/relate/intersection_ratios.hpp

@@ -0,0 +1,127 @@
+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands.
+
+// Use, modification and distribution is subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_GEOMETRY_GEOMETRY_POLICIES_RELATE_INTERSECTION_RATIOS_HPP
+#define BOOST_GEOMETRY_GEOMETRY_POLICIES_RELATE_INTERSECTION_RATIOS_HPP
+
+
+#include <algorithm>
+#include <string>
+
+#include <boost/concept_check.hpp>
+#include <boost/numeric/conversion/cast.hpp>
+
+#include <boost/geometry/algorithms/detail/assign_indexed_point.hpp>
+#include <boost/geometry/core/access.hpp>
+#include <boost/geometry/strategies/side_info.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+namespace policies { namespace relate
+{
+
+
+/*!
+\brief Policy returning segment ratios
+\note Template argument FractionType should be a fraction_type<SegmentRatio>
+ */
+template
+<
+    typename FractionType
+>
+struct segments_intersection_ratios
+{
+    typedef FractionType return_type;
+
+    template
+    <
+        typename Segment1,
+        typename Segment2,
+        typename SegmentIntersectionInfo
+    >
+    static inline return_type segments_crosses(side_info const&,
+                    SegmentIntersectionInfo const& sinfo,
+                    Segment1 const& , Segment2 const& )
+    {
+        return_type result;
+        result.assign(sinfo);
+        return result;
+    }
+
+    template <typename Segment1, typename Segment2, typename Ratio>
+    static inline return_type segments_collinear(
+        Segment1 const& , Segment2 const& ,
+        Ratio const& ra_from_wrt_b, Ratio const& ra_to_wrt_b,
+        Ratio const& rb_from_wrt_a, Ratio const& rb_to_wrt_a)
+    {
+        // We have only one result, for (potentially) two IP's,
+        // so we take a first one
+        return_type result;
+
+        if (ra_from_wrt_b.on_segment())
+        {
+            result.assign(Ratio::zero(), ra_from_wrt_b);
+        }
+        else if (rb_from_wrt_a.in_segment())
+        {
+            result.assign(rb_from_wrt_a, Ratio::zero());
+        }
+        else if (ra_to_wrt_b.on_segment())
+        {
+            result.assign(Ratio::one(), ra_to_wrt_b);
+        }
+        else if (rb_to_wrt_a.in_segment())
+        {
+            result.assign(rb_to_wrt_a, Ratio::one());
+        }
+
+        return result;
+    }
+
+    static inline return_type disjoint()
+    {
+        return return_type();
+    }
+    static inline return_type error(std::string const&)
+    {
+        return return_type();
+    }
+
+    template <typename Segment>
+    static inline return_type degenerate(Segment const& segment, bool)
+    {
+        return return_type();
+    }
+
+    template <typename Segment, typename Ratio>
+    static inline return_type one_degenerate(Segment const& ,
+            Ratio const& ratio, bool a_degenerate)
+    {
+        return_type result;
+        if (a_degenerate)
+        {
+            // IP lies on ratio w.r.t. segment b
+            result.assign(Ratio::zero(), ratio);
+        }
+        else
+        {
+            result.assign(ratio, Ratio::zero());
+        }
+        return result;
+    }
+
+};
+
+
+}} // namespace policies::relate
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_GEOMETRY_POLICIES_RELATE_INTERSECTION_RATIOS_HPP