MySQL
8.1.0
Source Code Documentation
area.h
Go to the documentation of this file.
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/* Copyright (c) 2018, 2023, Oracle and/or its affiliates.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/* @file
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Interface for obtaining area of geometry. */
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#ifndef SQL_GIS_AREA_H_INCLUDED
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#define SQL_GIS_AREA_H_INCLUDED
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#include "
sql/dd/types/spatial_reference_system.h
"
// dd::Spatial_reference_system
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#include "
sql/gis/geometries.h
"
// gis::Geometry
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namespace
gis
{
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/* Calculate the area of a geometry.
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The coordinate system of the geometry must match the coordinate system of
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the SRID. It is the caller's responsibility to guarantee this.
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@param[in] srs The spatial reference system.
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@param[in] g Input geometry.
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@param[in] func_name Function name used in error reporting.
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@param[out] result Result. Invalid if `result_null`.
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@param[out] result_null Whether result is `NULL` instead of `result`.
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@retval false Success.
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@retval true An error has occurred. The error has been reported with
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my_error(). */
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bool
area
(
const
dd::Spatial_reference_system
*srs,
const
Geometry
*g,
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const
char
*func_name,
double
*
result
,
bool
*result_null)
noexcept
;
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}
// namespace gis
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#endif
// SQL_GIS_AREA_H_INCLUDED
Geometry
Definition:
spatial.h:212
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::area
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
spatial_reference_system.h
result
Definition:
result.h:29
sql
gis
area.h
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