MySQL 8.0.31
Source Code Documentation
area.h
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1/* Copyright (c) 2018, 2022, Oracle and/or its affiliates.
2
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5 as published by the Free Software Foundation.
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12 separately licensed software that they have included with MySQL.
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License, version 2.0, for more details.
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19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
22
23/* @file
24
25 Interface for obtaining area of geometry. */
26
27#ifndef SQL_GIS_AREA_H_INCLUDED
28#define SQL_GIS_AREA_H_INCLUDED
29
30#include "sql/dd/types/spatial_reference_system.h" // dd::Spatial_reference_system
31#include "sql/gis/geometries.h" // gis::Geometry
32
33namespace gis {
34
35/* Calculate the area of a geometry.
36
37 The coordinate system of the geometry must match the coordinate system of
38 the SRID. It is the caller's responsibility to guarantee this.
39
40 @param[in] srs The spatial reference system.
41 @param[in] g Input geometry.
42 @param[in] func_name Function name used in error reporting.
43 @param[out] result Result. Invalid if `result_null`.
44 @param[out] result_null Whether result is `NULL` instead of `result`.
45
46 @retval false Success.
47 @retval true An error has occurred. The error has been reported with
48 my_error(). */
49
50bool area(const dd::Spatial_reference_system *srs, const Geometry *g,
51 const char *func_name, double *result, bool *result_null) noexcept;
52
53} // namespace gis
54
55#endif // SQL_GIS_AREA_H_INCLUDED
Definition: spatial.h:214
Definition: spatial_reference_system.h:52
This file declares the geometry class hierarchy used by the server as the internal representation of ...
Definition: area.cc:46
bool area(const dd::Spatial_reference_system *srs, const Geometry *g, const char *func_name, double *result, bool *result_null) noexcept
Definition: area.cc:78
Definition: result.h:29