buffer.h

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#ifndef SQL_GIS_BUFFER_H_INCLUDED
#define SQL_GIS_BUFFER_H_INCLUDED
 
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/// @file
///
/// This file declares the interface for calculating the buffer of a geometry.
 
#include <memory>                                   // std::unique_ptr
#include "sql/dd/types/spatial_reference_system.h"  // dd::Spatial_reference_system
#include "sql/gis/buffer_strategies.h"              // buffer_strategies
#include "sql/gis/geometries.h"                     // gis::Geometry
 
namespace gis {
 
/// Invalid buffer strategies exception.
///
/// Thrown when a buffer strategy is given as argument and the geometry is not
/// compatible: e.g. point strategy with a Linestring. Also thrown when
/// distance is negative and geometry is not Multi-/Polygon or GC.
struct invalid_buffer_argument_exception : public std::exception {};
 
/// Invalid buffer result exception.
///
/// Thrown when the result from buffer call to Boost is invalid.
struct invalid_buffer_result_exception : public std::exception {};
 
/// Creates the buffer of a geometry
///
/// @param[in] srs The spatial reference system.
/// @param[in] g Input geometry.
/// @param[in] strategies Struct holding strategy arguments for buffer creation
/// @param[in] func_name Function name used in error reporting.
/// @param[out] result The geometry that is the buffer of input geometry g
///
/// @retval false Success.
/// @retval true An error has occurred. The error has been reported with
/// my_error().
 
bool buffer(const dd::Spatial_reference_system *srs, const Geometry &g,
            const BufferStrategies &strategies, const char *func_name,
            std::unique_ptr<Geometry> *result) noexcept;
 
}  // namespace gis
 
#endif  // SQL_GIS_BUFFER_H_INCLUDED