length.h

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#ifndef GIS__LENGTH_H_INCLUDED
#define GIS__LENGTH_H_INCLUDED
 
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/// @file
///
/// This file declares the interface to calculate the length of linestrings and
/// multilinestrings.
 
#include "sql/dd/types/spatial_reference_system.h"  // dd::Spatial_reference_system
#include "sql/gis/geometries.h"
 
namespace gis {
/// Computes the length of linestrings and multilinestrings.
///
/// @param[in] srs The spatial reference system.
/// @param[in] g1 linestring or multilinestring.
/// @param[out] distance The length of g1 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 length(const dd::Spatial_reference_system *srs, const Geometry *g1,
            double *distance, bool *null) noexcept;
 
}  // namespace gis
 
#endif  // GIS__LENGTH_H_INCLUDED