geometry/util/closure_as_bool.hpp

0001 // Boost.Geometry (aka GGL, Generic Geometry Library)
0002
0003 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
0004 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
0005 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
0006
0007 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
0008 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
0009
0010 // Use, modification and distribution is subject to the Boost Software License,
0011 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0012 // http://www.boost.org/LICENSE_1_0.txt)
0013
0014 #ifndef BOOST_GEOMETRY_UTIL_CLOSURE_AS_BOOL_HPP
0015 #define BOOST_GEOMETRY_UTIL_CLOSURE_AS_BOOL_HPP
0016
0017 #include <boost/geometry/core/closure.hpp>
0018
0019
0020 namespace boost { namespace geometry
0021 {
0022
0023
0024 template<closure_selector Closure>
0025 struct closure_as_bool
0026 {};
0027
0028
0029 template<>
0030 struct closure_as_bool<closed>
0031 {
0032     static const bool value = true;
0033 };
0034
0035
0036 template<>
0037 struct closure_as_bool<open>
0038 {
0039     static const bool value = false;
0040 };
0041
0042
0043 }} // namespace boost::geometry
0044
0045
0046 #endif // BOOST_GEOMETRY_UTIL_CLOSURE_AS_BOOL_HPP