199 lines
6.0 KiB
C++
199 lines
6.0 KiB
C++
// 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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// Copyright (c) 2014-2015 Samuel Debionne, Grenoble, France.
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// This file was modified by Oracle on 2015, 2016, 2018.
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// Modifications copyright (c) 2015-2018, 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_EXPAND_INTERFACE_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_EXPAND_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/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/algorithms/dispatch/expand.hpp>
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#include <boost/geometry/strategies/default_strategy.hpp>
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#include <boost/geometry/strategies/expand.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 <typename Geometry>
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struct expand
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{
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template <typename Box, typename Strategy>
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static inline void apply(Box& box,
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Geometry const& geometry,
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Strategy const& strategy)
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{
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dispatch::expand<Box, Geometry>::apply(box, geometry, strategy);
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}
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template <typename Box>
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static inline void apply(Box& box,
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Geometry const& geometry,
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default_strategy)
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{
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typedef typename strategy::expand::services::default_strategy
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<
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typename tag<Geometry>::type,
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typename cs_tag<Geometry>::type
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>::type strategy_type;
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dispatch::expand<Box, Geometry>::apply(box, geometry, 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 expand
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{
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template <typename Box, typename Strategy>
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static inline void apply(Box& box,
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Geometry const& geometry,
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Strategy const& strategy)
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{
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concepts::check<Box>();
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concepts::check<Geometry const>();
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concepts::check_concepts_and_equal_dimensions<Box, Geometry const>();
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resolve_strategy::expand<Geometry>::apply(box, geometry, 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 expand<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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return expand<Geometry>::apply(m_box, geometry, m_strategy);
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}
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};
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template <class Box, typename Strategy>
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static inline void
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apply(Box& box,
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boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry,
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Strategy const& strategy)
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{
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return boost::apply_visitor(visitor<Box, Strategy>(box, strategy),
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geometry);
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}
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};
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} // namespace resolve_variant
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/***
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*!
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\brief Expands a box using the extend (envelope) of another geometry (box, point)
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\ingroup expand
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\tparam Box type of the box
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\tparam Geometry of second geometry, to be expanded with the box
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\param box box to expand another geometry with, might be changed
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\param geometry other geometry
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\param strategy_less
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\param strategy_greater
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\note Strategy is currently ignored
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*
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template
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<
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typename Box, typename Geometry,
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typename StrategyLess, typename StrategyGreater
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>
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inline void expand(Box& box, Geometry const& geometry,
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StrategyLess const& strategy_less,
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StrategyGreater const& strategy_greater)
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{
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concepts::check_concepts_and_equal_dimensions<Box, Geometry const>();
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dispatch::expand<Box, Geometry>::apply(box, geometry);
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}
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***/
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/*!
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\brief Expands (with strategy)
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\ingroup expand
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\tparam Box type of the box
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\tparam Geometry \tparam_geometry
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\tparam Strategy \tparam_strategy{expand}
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\param box box to be expanded using another geometry, mutable
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\param geometry \param_geometry geometry which envelope (bounding box)
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\param strategy \param_strategy{expand}
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will be added to the box
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\qbk{distinguish,with strategy}
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\qbk{[include reference/algorithms/expand.qbk]}
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*/
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template <typename Box, typename Geometry, typename Strategy>
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inline void expand(Box& box, Geometry const& geometry, Strategy const& strategy)
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{
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resolve_variant::expand<Geometry>::apply(box, geometry, strategy);
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}
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/*!
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\brief Expands a box using the bounding box (envelope) of another geometry
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(box, point)
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\ingroup expand
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\tparam Box type of the box
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\tparam Geometry \tparam_geometry
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\param box box to be expanded using another geometry, mutable
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\param geometry \param_geometry geometry which envelope (bounding box) will be
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added to the box
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\qbk{[include reference/algorithms/expand.qbk]}
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*/
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template <typename Box, typename Geometry>
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inline void expand(Box& box, Geometry const& geometry)
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{
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resolve_variant::expand<Geometry>::apply(box, geometry, default_strategy());
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}
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_EXPAND_INTERFACE_HPP
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