61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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// This file was modified by Oracle on 2018-2020.
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// Modifications copyright (c) 2018-2020, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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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_GEOMETRIES_VARIANT_GEOMETRY_HPP
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#define BOOST_GEOMETRY_GEOMETRIES_VARIANT_GEOMETRY_HPP
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#include <boost/variant/variant_fwd.hpp>
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#include <boost/geometry/core/point_type.hpp>
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namespace boost { namespace geometry
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{
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namespace detail
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{
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template <typename ...>
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struct parameter_pack_first_type {};
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template <typename T, typename ... Ts>
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struct parameter_pack_first_type<T, Ts...>
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{
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typedef T type;
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};
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} // namespace detail
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template <BOOST_VARIANT_ENUM_PARAMS(typename T)>
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struct point_type<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
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: point_type
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<
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typename detail::parameter_pack_first_type
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<
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BOOST_VARIANT_ENUM_PARAMS(T)
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>::type
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>
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{};
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_GEOMETRIES_VARIANT_GEOMETRY_HPP
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