1 files changed, 96 insertions, 0 deletions
diff --git a/boost/geometry/algorithms/detail/turns/print_turns.hpp b/boost/geometry/algorithms/detail/turns/print_turns.hpp
new file mode 100644
index 0000000000..b339e11c94
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+++ b/boost/geometry/algorithms/detail/turns/print_turns.hpp
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+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2014, Oracle and/or its affiliates.
+
+// Licensed under the Boost Software License version 1.0.
+// http://www.boost.org/users/license.html
+
+// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
+
+#ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_TURNS_PRINT_TURNS_HPP
+#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_TURNS_PRINT_TURNS_HPP
+
+#include <iostream>
+
+#include <boost/foreach.hpp>
+#include <boost/range.hpp>
+
+#include <boost/geometry/algorithms/detail/overlay/traversal_info.hpp>
+#include <boost/geometry/algorithms/detail/overlay/turn_info.hpp>
+#include <boost/geometry/algorithms/detail/overlay/debug_turn_info.hpp>
+#include <boost/geometry/io/wkt/write.hpp>
+#include <boost/geometry/io/dsv/write.hpp>
+
+namespace boost { namespace geometry
+{
+
+namespace detail { namespace turns
+{
+
+
+
+template <typename Geometry1, typename Geometry2, typename Turns>
+static inline void print_turns(Geometry1 const& g1,
+                               Geometry2 const& g2,
+                               Turns const& turns)
+{
+    typedef typename boost::range_value<Turns>::type turn_info;
+
+    std::cout << geometry::wkt(g1) << std::endl;
+    std::cout << geometry::wkt(g2) << std::endl;
+    int index = 0;
+    BOOST_FOREACH(turn_info const& turn, turns)
+    {
+        std::ostream& out = std::cout;
+        out << index
+            << ": " << geometry::method_char(turn.method);
+
+        if ( turn.discarded )
+            out << " (discarded)\n";
+        else if ( turn.blocked() )
+            out << " (blocked)\n";
+        else
+            out << '\n';
+
+        double fraction[2];
+
+        fraction[0] = turn.operations[0].fraction.numerator()
+            / turn.operations[0].fraction.denominator();
+
+        out << geometry::operation_char(turn.operations[0].operation)
+            <<": seg: " << turn.operations[0].seg_id.source_index
+            << ", m: " << turn.operations[0].seg_id.multi_index
+            << ", r: " << turn.operations[0].seg_id.ring_index
+            << ", s: " << turn.operations[0].seg_id.segment_index << ", ";
+        out << ", fr: " << fraction[0];
+        out << ", col?: " << turn.operations[0].is_collinear;
+        out << ' ' << geometry::dsv(turn.point) << ' ';
+
+        out << '\n';
+
+        fraction[1] = turn.operations[1].fraction.numerator()
+            / turn.operations[1].fraction.denominator();
+
+        out << geometry::operation_char(turn.operations[1].operation)
+            << ": seg: " << turn.operations[1].seg_id.source_index
+            << ", m: " << turn.operations[1].seg_id.multi_index
+            << ", r: " << turn.operations[1].seg_id.ring_index
+            << ", s: " << turn.operations[1].seg_id.segment_index << ", ";
+        out << ", fr: " << fraction[1];
+        out << ", col?: " << turn.operations[1].is_collinear;
+        out << ' ' << geometry::dsv(turn.point) << ' ';
+
+        ++index;
+        std::cout << std::endl;
+    }
+}
+
+
+
+
+}} // namespace detail::turns
+
+}} // namespace boost::geometry
+
+
+#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_TURNS_PRINT_TURNS_HPP