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1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
2 | ||
3 | // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. | |
4 | // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. | |
5 | // Copyright (c) 2009-2012 Mateusz Loskot, London, UK. | |
6 | ||
7 | // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library | |
8 | // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. | |
9 | ||
10 | // Use, modification and distribution is subject to the Boost Software License, | |
11 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
12 | // http://www.boost.org/LICENSE_1_0.txt) | |
13 | ||
14 | #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_NULL_HPP | |
15 | #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_NULL_HPP | |
16 | ||
17 | namespace boost { namespace geometry | |
18 | { | |
19 | ||
20 | #ifndef DOXYGEN_NO_DETAIL | |
21 | namespace detail | |
22 | { | |
23 | ||
24 | struct calculate_null | |
25 | { | |
26 | template<typename ReturnType, typename Geometry, typename Strategy> | |
27 | static inline ReturnType apply(Geometry const& , Strategy const&) | |
28 | { | |
29 | return ReturnType(); | |
30 | } | |
31 | }; | |
32 | ||
33 | } // namespace detail | |
34 | #endif // DOXYGEN_NO_DETAIL | |
35 | ||
36 | }} // namespace boost::geometry | |
37 | ||
38 | #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_CALCULATE_NULL_HPP |