MySQL
8.0.28
Source Code Documentation
distance.h
Go to the documentation of this file.
1
#ifndef SQL_GIS_DISTANCE_H_INCLUDED
2
#define SQL_GIS_DISTANCE_H_INCLUDED
3
4
// Copyright (c) 2017, 2021, Oracle and/or its affiliates.
5
//
6
// This program is free software; you can redistribute it and/or modify
7
// it under the terms of the GNU General Public License, version 2.0,
8
// as published by the Free Software Foundation.
9
//
10
// This program is also distributed with certain software (including
11
// but not limited to OpenSSL) that is licensed under separate terms,
12
// as designated in a particular file or component or in included license
13
// documentation. The authors of MySQL hereby grant you an additional
14
// permission to link the program and your derivative works with the
15
// separately licensed software that they have included with MySQL.
16
//
17
// This program is distributed in the hope that it will be useful,
18
// but WITHOUT ANY WARRANTY; without even the implied warranty of
19
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20
// GNU General Public License, version 2.0, for more details.
21
//
22
// You should have received a copy of the GNU General Public License
23
// along with this program; if not, write to the Free Software
24
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
25
26
/// @file
27
///
28
/// This file declares the interface to calculate distance between two
29
/// geometries.
30
31
#include "
sql/dd/types/spatial_reference_system.h
"
// dd::Spatial_reference_system
32
#include "
sql/gis/geometries.h
"
33
34
namespace
gis
{
35
36
/// Computes the distance between two geometries.
37
///
38
/// Both geometries must be in the same coordinate system (Cartesian or
39
/// geographic), and the coordinate system of the geometries must match
40
/// the coordinate system of the SRID. It is the caller's responsibility
41
/// to guarantee this.
42
///
43
/// @param[in] srs The spatial reference system, common to both geometries.
44
/// @param[in] g1 First geometry.
45
/// @param[in] g2 Second geometry.
46
/// @param[out] distance The shortest distance between g1 and g2 in the SRS'
47
/// linear unit.
48
/// @param[out] is_null True if the return value is NULL.
49
///
50
/// @retval false Success.
51
/// @retval true An error has occurred. The error has been reported with
52
/// my_error().
53
bool
distance
(
const
dd::Spatial_reference_system
*srs,
const
Geometry
*g1,
54
const
Geometry
*g2,
double
*
distance
,
bool
*is_null) noexcept;
55
56
}
// namespace gis
57
58
#endif
// SQL_GIS_DISTANCE_H_INCLUDED
Geometry
Definition:
spatial.h:214
dd::Spatial_reference_system
Definition:
spatial_reference_system.h:52
geometries.h
This file declares the geometry class hierarchy used by the server as the internal representation of ...
gis
Definition:
area.cc:46
gis::distance
bool distance(const dd::Spatial_reference_system *srs, const Geometry *g1, const Geometry *g2, double *distance, bool *is_null) noexcept
Computes the distance between two geometries.
Definition:
distance.cc:39
spatial_reference_system.h
sql
gis
distance.h
Generated by
1.9.1