geometry/algorithms/default_area_result.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 // Copyright (c) 2017 Adam Wulkiewicz, Lodz, Poland.
0007
0008 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
0009 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
0010
0011 // Use, modification and distribution is subject to the Boost Software License,
0012 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0013 // http://www.boost.org/LICENSE_1_0.txt)
0014
0015 #ifndef BOOST_GEOMETRY_ALGORITHMS_DEFAULT_AREA_RESULT_HPP
0016 #define BOOST_GEOMETRY_ALGORITHMS_DEFAULT_AREA_RESULT_HPP
0017
0018
0019 #include <boost/geometry/algorithms/area_result.hpp>
0020
0021
0022 namespace boost { namespace geometry
0023 {
0024
0025 /*!
0026 \brief Meta-function defining return type of area function, using the default strategy
0027 \ingroup area
0028 \note The strategy defines the return-type (so this situation is different
0029     from length, where distance is sqr/sqrt, but length always squared)
0030  */
0031
0032 template <typename Geometry>
0033 struct default_area_result
0034     : area_result<Geometry>
0035 {};
0036
0037
0038 }} // namespace boost::geometry
0039
0040
0041 #endif // BOOST_GEOMETRY_ALGORITHMS_DEFAULT_AREA_RESULT_HPP