Chris@16: // Boost.Geometry (aka GGL, Generic Geometry Library)
Chris@16: 
Chris@16: // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
Chris@16: // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
Chris@16: // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
Chris@16: 
Chris@16: // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
Chris@16: // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
Chris@16: 
Chris@16: // Use, modification and distribution is subject to the Boost Software License,
Chris@16: // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_GEOMETRY_STRATEGIES_DEFAULT_AREA_RESULT_HPP
Chris@16: #define BOOST_GEOMETRY_STRATEGIES_DEFAULT_AREA_RESULT_HPP
Chris@16: 
Chris@16: 
Chris@16: #include <boost/geometry/core/cs.hpp>
Chris@16: #include <boost/geometry/core/coordinate_type.hpp>
Chris@16: #include <boost/geometry/strategies/area.hpp>
Chris@16: #include <boost/geometry/util/select_most_precise.hpp>
Chris@16: 
Chris@16: 
Chris@16: namespace boost { namespace geometry
Chris@16: {
Chris@16: 
Chris@16: /*!
Chris@16: \brief Meta-function defining return type of area function, using the default strategy
Chris@16: \ingroup area
Chris@16: \note The strategy defines the return-type (so this situation is different
Chris@16:     from length, where distance is sqr/sqrt, but length always squared)
Chris@16:  */
Chris@16: 
Chris@16: template <typename Geometry>
Chris@16: struct default_area_result
Chris@16: {
Chris@16:     typedef typename point_type<Geometry>::type point_type;
Chris@16:     typedef typename strategy::area::services::default_strategy
Chris@16:         <
Chris@16:             typename cs_tag<point_type>::type,
Chris@16:             point_type
Chris@16:         >::type strategy_type;
Chris@16: 
Chris@16:     typedef typename strategy_type::return_type type;
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: }} // namespace boost::geometry
Chris@16: 
Chris@16: 
Chris@16: #endif // BOOST_GEOMETRY_STRATEGIES_DEFAULT_AREA_RESULT_HPP