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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
// Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
// This file was modified by Oracle on 2015.
// Modifications copyright (c) 2015, Oracle and/or its affiliates.
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_INTERFACE_HPP
#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_INTERFACE_HPP
#include <boost/variant/apply_visitor.hpp>
#include <boost/variant/static_visitor.hpp>
#include <boost/variant/variant_fwd.hpp>
#include <boost/geometry/geometries/concepts/check.hpp>
#include <boost/geometry/algorithms/dispatch/envelope.hpp>
namespace boost { namespace geometry
{
namespace resolve_variant
{
template <typename Geometry>
struct envelope
{
template <typename Box>
static inline void apply(Geometry const& geometry, Box& box)
{
concept::check<Geometry const>();
concept::check<Box>();
dispatch::envelope<Geometry>::apply(geometry, box);
}
};
template <BOOST_VARIANT_ENUM_PARAMS(typename T)>
struct envelope<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
{
template <typename Box>
struct visitor: boost::static_visitor<void>
{
Box& m_box;
visitor(Box& box): m_box(box) {}
template <typename Geometry>
void operator()(Geometry const& geometry) const
{
envelope<Geometry>::apply(geometry, m_box);
}
};
template <typename Box>
static inline void
apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry,
Box& box)
{
boost::apply_visitor(visitor<Box>(box), geometry);
}
};
} // namespace resolve_variant
/*!
\brief \brief_calc{envelope}
\ingroup envelope
\details \details_calc{envelope,\det_envelope}.
\tparam Geometry \tparam_geometry
\tparam Box \tparam_box
\param geometry \param_geometry
\param mbr \param_box \param_set{envelope}
\qbk{[include reference/algorithms/envelope.qbk]}
\qbk{
[heading Example]
[envelope] [envelope_output]
}
*/
template<typename Geometry, typename Box>
inline void envelope(Geometry const& geometry, Box& mbr)
{
resolve_variant::envelope<Geometry>::apply(geometry, mbr);
}
/*!
\brief \brief_calc{envelope}
\ingroup envelope
\details \details_calc{return_envelope,\det_envelope}. \details_return{envelope}
\tparam Box \tparam_box
\tparam Geometry \tparam_geometry
\param geometry \param_geometry
\return \return_calc{envelope}
\qbk{[include reference/algorithms/envelope.qbk]}
\qbk{
[heading Example]
[return_envelope] [return_envelope_output]
}
*/
template<typename Box, typename Geometry>
inline Box return_envelope(Geometry const& geometry)
{
Box mbr;
resolve_variant::envelope<Geometry>::apply(geometry, mbr);
return mbr;
}
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_INTERFACE_HPP
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