Incomplete work for using Boost.Polygon to compute medial axis

xs/src/boost/swap.hpp

@@ -0,0 +1,12 @@
+// Copyright (C) 2007 Joseph Gauterin
+//
+// Distributed under 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_SWAP_HPP
+#define BOOST_SWAP_HPP
+
+#include "boost/utility/swap.hpp"
+
+#endif