51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2011 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2011 Mateusz Loskot, London, UK.
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// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_GEOMETRY_STRATEGIES_DEFAULT_DISTANCE_RESULT_HPP
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#define BOOST_GEOMETRY_STRATEGIES_DEFAULT_DISTANCE_RESULT_HPP
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#include <boost/geometry/core/cs.hpp>
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#include <boost/geometry/core/point_type.hpp>
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#include <boost/geometry/strategies/distance.hpp>
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namespace boost { namespace geometry
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{
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/*!
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\brief Meta-function defining return type of distance function
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\ingroup distance
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\note The strategy defines the return-type (so this situation is different
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from length, where distance is sqr/sqrt, but length always squared)
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*/
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template <typename Geometry1, typename Geometry2 = Geometry1>
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struct default_distance_result
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{
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typedef typename strategy::distance::services::return_type
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<
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typename strategy::distance::services::default_strategy
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<
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point_tag,
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typename point_type<Geometry1>::type,
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typename point_type<Geometry2>::type
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>::type
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>::type type;
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};
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_STRATEGIES_DEFAULT_DISTANCE_RESULT_HPP
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