frechet_distance.h

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#ifndef GIS__FRECHET_DISTANCE_H_INCLUDED
#define GIS__FRECHET_DISTANCE_H_INCLUDED
 
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/// @file
///
/// This file declares the interface to calculate the discrete Frechet distance
/// between linestrings.
 
#include "sql/dd/types/spatial_reference_system.h"  // dd::Spatial_reference_system
#include "sql/gis/geometries.h"
 
namespace gis {
/// Computes the discrete Frechet distance between linestrings
///
/// @param[in] srs The spatial reference system, common to both geometries.
/// @param[in] g1 First geometry.
/// @param[in] g2 Second geometry.
/// @param[in] func_name Function name used in error reporting.
/// @param[out] frechet_distance The Frechet distance between g1 and g2 in the
/// SRS' linear unit.
/// @param[out] null True if the return value is NULL.
///
/// @retval false Success.
/// @retval true An error has occurred. The error has been reported with
/// my_error().
bool frechet_distance(const dd::Spatial_reference_system *srs,
                      const Geometry *g1, const Geometry *g2,
                      const char *func_name, double *frechet_distance,
                      bool *null) noexcept;
 
}  // namespace gis
 
#endif  // GIS__FRECHET_DISTANCE_H_INCLUDED