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// Copyright (c) 2018, 2025, 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 designed to work 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 either included with
// the program or referenced in the documentation.
//
// 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
///
/// Implements the area functor and function.
#include "sql/gis/area.h"
#include "sql/gis/area_functor.h"
#include <assert.h>
#include <boost/geometry.hpp> // boost::geometry
#include <cmath> // isfinite
// assert
#include "my_inttypes.h" // MYF
#include "my_sys.h" // my_error
#include "mysqld_error.h" // ER_DATA_OUT_OF_RANGE
#include "sql/dd/types/spatial_reference_system.h" // dd::Spatial_reference_system
#include "sql/gis/geometries.h" // gis::{Geometry{,_type},Coordinate_system}
#include "sql/gis/geometries_cs.h" // gis::{Cartesian_*,Geographic_*}
#include "sql/gis/geometries_traits.h" // boost::geometry traits for gis types
#include "sql/sql_exception_handler.h" // handle_gis_exception
namespace bg = boost::geometry;
namespace gis {
Area::Area() = default;
Area::Area(double semi_major, double semi_minor)
: m_semi_major(semi_major),
m_semi_minor(semi_minor),
m_geographic_strategy(bg::srs::spheroid<double>(semi_major, semi_minor)) {
}
double Area::operator()(const Geometry &g) const { return apply(*this, g); }
double Area::eval(const Cartesian_polygon &g) const { return bg::area(g); }
double Area::eval(const Cartesian_multipolygon &g) const { return bg::area(g); }
double Area::eval(const Geographic_polygon &g) const {
return bg::area(g, m_geographic_strategy);
}
double Area::eval(const Geographic_multipolygon &g) const {
return bg::area(g, m_geographic_strategy);
}
double Area::eval(const Geometry &) const {
/* purecov: begin deadcode */
// Not implemented
assert(false);
throw std::exception();
/* purecov: end */
}
bool area(const dd::Spatial_reference_system *srs, const Geometry *g,
const char *func_name, double *result, bool *result_null) noexcept {
try {
assert(((srs == nullptr || srs->is_cartesian()) &&
g->coordinate_system() == Coordinate_system::kCartesian) ||
(srs != nullptr && srs->is_geographic() &&
g->coordinate_system() == Coordinate_system::kGeographic));
// Calling area on empty geometry results in NULL.
if (g->is_empty()) {
*result_null = true;
return false;
}
if (srs && srs->is_geographic())
*result = Area(srs->semi_major_axis(), srs->semi_minor_axis())(*g);
else
*result = Area()(*g);
if (!std::isfinite(*result)) {
my_error(ER_DATA_OUT_OF_RANGE, MYF(0), "Result", func_name);
return true;
}
*result_null = false;
return false;
} catch (...) {
/* purecov: begin inspected */
handle_gis_exception(func_name);
return true;
/* purecov: end */
}
}
} // namespace gis
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