// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
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// This file was modified by Oracle on 2015-2020.
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// Modifications copyright (c) 2015-2020, Oracle and/or its affiliates.
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// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
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// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
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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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// Distributed under the Boost Software License, Version 1.0.
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// (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_ALGORITHMS_DETAIL_ENVELOPE_INTERFACE_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_INTERFACE_HPP
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#include <boost/variant/apply_visitor.hpp>
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#include <boost/variant/static_visitor.hpp>
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#include <boost/variant/variant_fwd.hpp>
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#include <boost/geometry/algorithms/dispatch/envelope.hpp>
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#include <boost/geometry/core/coordinate_system.hpp>
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#include <boost/geometry/core/tag.hpp>
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#include <boost/geometry/core/tags.hpp>
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#include <boost/geometry/geometries/concepts/check.hpp>
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#include <boost/geometry/strategies/default_strategy.hpp>
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#include <boost/geometry/strategies/detail.hpp>
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#include <boost/geometry/strategies/envelope/services.hpp>
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#include <boost/geometry/strategy/envelope.hpp>
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#include <boost/geometry/util/select_most_precise.hpp>
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namespace boost { namespace geometry
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{
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namespace resolve_strategy
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{
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template
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<
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typename Strategy,
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bool IsUmbrella = strategies::detail::is_umbrella_strategy<Strategy>::value
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>
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struct envelope
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{
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template <typename Geometry, typename Box>
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static inline void apply(Geometry const& geometry,
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Box& box,
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Strategy const& strategy)
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{
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dispatch::envelope<Geometry>::apply(geometry, box, strategy);
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}
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};
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template <typename Strategy>
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struct envelope<Strategy, false>
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{
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template <typename Geometry, typename Box>
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static inline void apply(Geometry const& geometry,
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Box& box,
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Strategy const& strategy)
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{
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using strategies::envelope::services::strategy_converter;
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return dispatch::envelope
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<
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Geometry
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>::apply(geometry, box, strategy_converter<Strategy>::get(strategy));
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}
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};
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template <>
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struct envelope<default_strategy, false>
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{
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template <typename Geometry, typename Box>
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static inline void apply(Geometry const& geometry,
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Box& box,
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default_strategy)
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{
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typedef typename strategies::envelope::services::default_strategy
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<
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Geometry, Box
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>::type strategy_type;
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dispatch::envelope<Geometry>::apply(geometry, box, strategy_type());
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}
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};
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} // namespace resolve_strategy
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namespace resolve_variant
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{
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template <typename Geometry>
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struct envelope
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{
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template <typename Box, typename Strategy>
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static inline void apply(Geometry const& geometry,
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Box& box,
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Strategy const& strategy)
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{
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concepts::check<Geometry const>();
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concepts::check<Box>();
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resolve_strategy::envelope<Strategy>::apply(geometry, box, strategy);
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}
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};
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template <BOOST_VARIANT_ENUM_PARAMS(typename T)>
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struct envelope<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
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{
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template <typename Box, typename Strategy>
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struct visitor: boost::static_visitor<void>
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{
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Box& m_box;
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Strategy const& m_strategy;
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visitor(Box& box, Strategy const& strategy)
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: m_box(box)
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, m_strategy(strategy)
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{}
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template <typename Geometry>
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void operator()(Geometry const& geometry) const
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{
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envelope<Geometry>::apply(geometry, m_box, m_strategy);
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}
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};
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template <typename Box, typename Strategy>
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static inline void
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apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry,
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Box& box,
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Strategy const& strategy)
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{
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boost::apply_visitor(visitor<Box, Strategy>(box, strategy), geometry);
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}
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};
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} // namespace resolve_variant
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/*!
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\brief \brief_calc{envelope (with strategy)}
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\ingroup envelope
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\details \details_calc{envelope,\det_envelope}.
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\tparam Geometry \tparam_geometry
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\tparam Box \tparam_box
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\tparam Strategy \tparam_strategy{Envelope}
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\param geometry \param_geometry
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\param mbr \param_box \param_set{envelope}
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\param strategy \param_strategy{envelope}
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\qbk{distinguish,with strategy}
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\qbk{[include reference/algorithms/envelope.qbk]}
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\qbk{
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[heading Example]
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[envelope] [envelope_output]
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}
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*/
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template<typename Geometry, typename Box, typename Strategy>
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inline void envelope(Geometry const& geometry, Box& mbr, Strategy const& strategy)
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{
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resolve_variant::envelope<Geometry>::apply(geometry, mbr, strategy);
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}
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/*!
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\brief \brief_calc{envelope}
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\ingroup envelope
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\details \details_calc{envelope,\det_envelope}.
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\tparam Geometry \tparam_geometry
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\tparam Box \tparam_box
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\param geometry \param_geometry
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\param mbr \param_box \param_set{envelope}
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\qbk{[include reference/algorithms/envelope.qbk]}
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\qbk{
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[heading Example]
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[envelope] [envelope_output]
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}
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*/
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template<typename Geometry, typename Box>
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inline void envelope(Geometry const& geometry, Box& mbr)
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{
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resolve_variant::envelope<Geometry>::apply(geometry, mbr, default_strategy());
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}
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/*!
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\brief \brief_calc{envelope}
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\ingroup envelope
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\details \details_calc{return_envelope,\det_envelope}. \details_return{envelope}
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\tparam Box \tparam_box
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\tparam Geometry \tparam_geometry
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\tparam Strategy \tparam_strategy{Envelope}
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\param geometry \param_geometry
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\param strategy \param_strategy{envelope}
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\return \return_calc{envelope}
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\qbk{distinguish,with strategy}
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\qbk{[include reference/algorithms/envelope.qbk]}
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\qbk{
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[heading Example]
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[return_envelope] [return_envelope_output]
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}
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*/
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template<typename Box, typename Geometry, typename Strategy>
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inline Box return_envelope(Geometry const& geometry, Strategy const& strategy)
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{
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Box mbr;
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resolve_variant::envelope<Geometry>::apply(geometry, mbr, strategy);
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return mbr;
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}
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/*!
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\brief \brief_calc{envelope}
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\ingroup envelope
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\details \details_calc{return_envelope,\det_envelope}. \details_return{envelope}
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\tparam Box \tparam_box
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\tparam Geometry \tparam_geometry
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\param geometry \param_geometry
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\return \return_calc{envelope}
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\qbk{[include reference/algorithms/envelope.qbk]}
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\qbk{
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[heading Example]
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[return_envelope] [return_envelope_output]
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}
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*/
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template<typename Box, typename Geometry>
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inline Box return_envelope(Geometry const& geometry)
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{
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Box mbr;
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resolve_variant::envelope<Geometry>::apply(geometry, mbr, default_strategy());
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return mbr;
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}
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_INTERFACE_HPP
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