You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
110 lines
3.9 KiB
110 lines
3.9 KiB
// Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
|
|
//
|
|
// 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
|
|
///
|
|
/// Implements the area functor and function.
|
|
|
|
#include "sql/gis/area.h"
|
|
#include "sql/gis/area_functor.h"
|
|
|
|
#include <boost/geometry.hpp> // boost::geometry
|
|
#include <cmath> // isfinite
|
|
|
|
#include "my_dbug.h" // DBUG_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
|
|
DBUG_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 {
|
|
DBUG_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
|
|
|