diff options
Diffstat (limited to 'boost/geometry/algorithms/buffer.hpp')
| -rw-r--r-- | boost/geometry/algorithms/buffer.hpp | 256 |
1 files changed, 4 insertions, 252 deletions
diff --git a/boost/geometry/algorithms/buffer.hpp b/boost/geometry/algorithms/buffer.hpp index 4720c880e3..5fae384855 100644 --- a/boost/geometry/algorithms/buffer.hpp +++ b/boost/geometry/algorithms/buffer.hpp @@ -4,8 +4,8 @@ // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. // Copyright (c) 2009-2012 Mateusz Loskot, London, UK. -// This file was modified by Oracle on 2017-2021. -// Modifications copyright (c) 2017-2021 Oracle and/or its affiliates. +// This file was modified by Oracle on 2017-2022. +// Modifications copyright (c) 2017-2022 Oracle and/or its affiliates. // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library @@ -18,255 +18,7 @@ #ifndef BOOST_GEOMETRY_ALGORITHMS_BUFFER_HPP #define BOOST_GEOMETRY_ALGORITHMS_BUFFER_HPP -#include <cstddef> - -#include <boost/numeric/conversion/cast.hpp> - -#include <boost/range/value_type.hpp> - -#include <boost/variant/apply_visitor.hpp> -#include <boost/variant/static_visitor.hpp> -#include <boost/variant/variant_fwd.hpp> - -#include <boost/geometry/algorithms/clear.hpp> -#include <boost/geometry/algorithms/envelope.hpp> -#include <boost/geometry/algorithms/is_empty.hpp> -#include <boost/geometry/algorithms/not_implemented.hpp> -#include <boost/geometry/arithmetic/arithmetic.hpp> -#include <boost/geometry/geometries/concepts/check.hpp> -#include <boost/geometry/geometries/box.hpp> -#include <boost/geometry/util/math.hpp> - -#include <boost/geometry/algorithms/detail/buffer/buffer_box.hpp> -#include <boost/geometry/algorithms/detail/buffer/buffer_inserter.hpp> - -#include <boost/geometry/strategies/buffer/cartesian.hpp> -#include <boost/geometry/strategies/buffer/geographic.hpp> -#include <boost/geometry/strategies/buffer/spherical.hpp> - -namespace boost { namespace geometry -{ - -#ifndef DOXYGEN_NO_DISPATCH -namespace dispatch -{ - -template -< - typename Input, - typename Output, - typename TagIn = typename tag<Input>::type, - typename TagOut = typename tag<Output>::type -> -struct buffer: not_implemented<TagIn, TagOut> -{}; - - -template <typename BoxIn, typename BoxOut> -struct buffer<BoxIn, BoxOut, box_tag, box_tag> -{ - template <typename Distance> - static inline void apply(BoxIn const& box_in, Distance const& distance, - Distance const& , BoxOut& box_out) - { - detail::buffer::buffer_box(box_in, distance, box_out); - } -}; - -} // namespace dispatch -#endif // DOXYGEN_NO_DISPATCH - - -namespace resolve_variant { - -template <typename Geometry> -struct buffer -{ - template <typename Distance, typename GeometryOut> - static inline void apply(Geometry const& geometry, - Distance const& distance, - Distance const& chord_length, - GeometryOut& out) - { - dispatch::buffer<Geometry, GeometryOut>::apply(geometry, distance, chord_length, out); - } -}; - -template <BOOST_VARIANT_ENUM_PARAMS(typename T)> -struct buffer<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> > -{ - template <typename Distance, typename GeometryOut> - struct visitor: boost::static_visitor<void> - { - Distance const& m_distance; - Distance const& m_chord_length; - GeometryOut& m_out; - - visitor(Distance const& distance, - Distance const& chord_length, - GeometryOut& out) - : m_distance(distance), - m_chord_length(chord_length), - m_out(out) - {} - - template <typename Geometry> - void operator()(Geometry const& geometry) const - { - buffer<Geometry>::apply(geometry, m_distance, m_chord_length, m_out); - } - }; - - template <typename Distance, typename GeometryOut> - static inline void apply( - boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry, - Distance const& distance, - Distance const& chord_length, - GeometryOut& out - ) - { - boost::apply_visitor(visitor<Distance, GeometryOut>(distance, chord_length, out), geometry); - } -}; - -} // namespace resolve_variant - - -/*! -\brief \brief_calc{buffer} -\ingroup buffer -\details \details_calc{buffer, \det_buffer}. -\tparam Input \tparam_geometry -\tparam Output \tparam_geometry -\tparam Distance \tparam_numeric -\param geometry_in \param_geometry -\param geometry_out \param_geometry -\param distance The distance to be used for the buffer -\param chord_length (optional) The length of the chord's in the generated arcs around points or bends - -\qbk{[include reference/algorithms/buffer.qbk]} - */ -template <typename Input, typename Output, typename Distance> -inline void buffer(Input const& geometry_in, Output& geometry_out, - Distance const& distance, Distance const& chord_length = -1) -{ - concepts::check<Input const>(); - concepts::check<Output>(); - - resolve_variant::buffer<Input>::apply(geometry_in, distance, chord_length, geometry_out); -} - -/*! -\brief \brief_calc{buffer} -\ingroup buffer -\details \details_calc{return_buffer, \det_buffer}. \details_return{buffer}. -\tparam Input \tparam_geometry -\tparam Output \tparam_geometry -\tparam Distance \tparam_numeric -\param geometry \param_geometry -\param distance The distance to be used for the buffer -\param chord_length (optional) The length of the chord's in the generated arcs - around points or bends (RESERVED, NOT YET USED) -\return \return_calc{buffer} - */ -template <typename Output, typename Input, typename Distance> -Output return_buffer(Input const& geometry, Distance const& distance, Distance const& chord_length = -1) -{ - concepts::check<Input const>(); - concepts::check<Output>(); - - Output geometry_out; - - resolve_variant::buffer<Input>::apply(geometry, distance, chord_length, geometry_out); - - return geometry_out; -} - -/*! -\brief \brief_calc{buffer} -\ingroup buffer -\details \details_calc{buffer, \det_buffer}. -\tparam GeometryIn \tparam_geometry -\tparam MultiPolygon \tparam_geometry{MultiPolygon} -\tparam DistanceStrategy A strategy defining distance (or radius) -\tparam SideStrategy A strategy defining creation along sides -\tparam JoinStrategy A strategy defining creation around convex corners -\tparam EndStrategy A strategy defining creation at linestring ends -\tparam PointStrategy A strategy defining creation around points -\param geometry_in \param_geometry -\param geometry_out output multi polygon (or std:: collection of polygons), - will contain a buffered version of the input geometry -\param distance_strategy The distance strategy to be used -\param side_strategy The side strategy to be used -\param join_strategy The join strategy to be used -\param end_strategy The end strategy to be used -\param point_strategy The point strategy to be used - -\qbk{distinguish,with strategies} -\qbk{[include reference/algorithms/buffer_with_strategies.qbk]} - */ -template -< - typename GeometryIn, - typename MultiPolygon, - typename DistanceStrategy, - typename SideStrategy, - typename JoinStrategy, - typename EndStrategy, - typename PointStrategy -> -inline void buffer(GeometryIn const& geometry_in, - MultiPolygon& geometry_out, - DistanceStrategy const& distance_strategy, - SideStrategy const& side_strategy, - JoinStrategy const& join_strategy, - EndStrategy const& end_strategy, - PointStrategy const& point_strategy) -{ - typedef typename boost::range_value<MultiPolygon>::type polygon_type; - concepts::check<GeometryIn const>(); - concepts::check<polygon_type>(); - - typedef typename point_type<GeometryIn>::type point_type; - typedef typename rescale_policy_type - < - point_type, - typename geometry::cs_tag<point_type>::type - >::type rescale_policy_type; - - geometry_out.clear(); - - if (geometry::is_empty(geometry_in)) - { - // Then output geometry is kept empty as well - return; - } - - model::box<point_type> box; - geometry::envelope(geometry_in, box); - geometry::buffer(box, box, distance_strategy.max_distance(join_strategy, end_strategy)); - - typename strategies::buffer::services::default_strategy - < - GeometryIn - >::type strategies; - - rescale_policy_type rescale_policy - = boost::geometry::get_rescale_policy<rescale_policy_type>( - box, strategies); - - detail::buffer::buffer_inserter<polygon_type>(geometry_in, - range::back_inserter(geometry_out), - distance_strategy, - side_strategy, - join_strategy, - end_strategy, - point_strategy, - strategies, - rescale_policy); -} - - -}} // namespace boost::geometry +#include <boost/geometry/algorithms/detail/buffer/interface.hpp> +#include <boost/geometry/algorithms/detail/buffer/implementation.hpp> #endif // BOOST_GEOMETRY_ALGORITHMS_BUFFER_HPP |