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#ifndef SQL_GIS_BUFFER_FUNCTOR_H_INCLUDED
#define SQL_GIS_BUFFER_FUNCTOR_H_INCLUDED
// Copyright (c) 2021, 2025, Oracle and/or its affiliates.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 2.0,
// as published by the Free Software Foundation.
//
// This program is designed to work with certain software (including
// but not limited to OpenSSL) that is licensed under separate terms,
// as designated in a particular file or component or in included license
// documentation. The authors of MySQL hereby grant you an additional
// permission to link the program and your derivative works with the
// separately licensed software that they have either included with
// the program or referenced in the documentation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License, version 2.0, for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
/// @file
///
/// This file declares the buffer functor interface.
///
/// The functor is not intended for use directly by MySQL code. It should be
/// used indirectly through the gis::buffer() function.
///
/// @see gis::buffer
#include <boost/geometry/strategies/strategies.hpp> // bg::strategy::buffer::*
#include <memory> // std::unique_ptr
#include "sql/dd/types/spatial_reference_system.h" // dd::Spatial_reference_system
#include "sql/gis/functor.h" // gis::Unary_functor
#include "sql/gis/geometries.h" // gis::Geometry
#include "sql/gis/geometries_cs.h" // gis::{Cartesian_*,Geographic_point}
namespace bg = boost::geometry;
namespace gis {
/// Buffer functor that calls boost::geometry::buffer with correct geometry
/// type and strategy combination.
///
/// The functor may throw exceptions. It is intended for implementing geographic
/// functions. It should not be used directly by other MySQL code.
class Buffer : public Unary_functor<std::unique_ptr<Geometry>> {
private:
const dd::Spatial_reference_system *m_srs;
const BufferStrategies &strats;
bg::strategy::buffer::distance_symmetric<double> d_symmetric;
bg::strategy::buffer::side_straight s_straight;
bg::strategy::buffer::join_round j_round;
bg::strategy::buffer::join_miter j_miter;
bg::strategy::buffer::end_round e_round;
bg::strategy::buffer::end_flat e_flat;
bg::strategy::buffer::point_circle p_circle;
bg::strategy::buffer::point_square p_square;
bg::strategy::buffer::geographic_point_circle<> geo_point_circle;
public:
explicit Buffer(const BufferStrategies &strats);
Buffer(const dd::Spatial_reference_system *srs,
const BufferStrategies &strats);
std::unique_ptr<Geometry> operator()(const Geometry &g) const override;
std::unique_ptr<Geometry> eval(const Geometry &g) const;
std::unique_ptr<Geometry> eval(const Cartesian_point &g) const;
std::unique_ptr<Geometry> eval(const Cartesian_multipoint &g) const;
std::unique_ptr<Geometry> eval(const Cartesian_linestring &g) const;
std::unique_ptr<Geometry> eval(const Cartesian_multilinestring &g) const;
std::unique_ptr<Geometry> eval(const Cartesian_polygon &g) const;
std::unique_ptr<Geometry> eval(const Cartesian_multipolygon &g) const;
std::unique_ptr<Geometry> eval(const Cartesian_geometrycollection &g) const;
std::unique_ptr<Geometry> eval(const Geographic_point &g) const;
template <class T>
std::unique_ptr<Geometry> typed_buffer(T &g) const;
};
} // namespace gis
#endif // SQL_GIS_BUFFER_FUNCTOR_H_INCLUDED
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