length.h

Go to the documentation of this file.

#ifndef GIS__LENGTH_H_INCLUDED
#define GIS__LENGTH_H_INCLUDED
 
// Copyright (c) 2017, 2023, 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 also distributed 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 included with MySQL.
//
// 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 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