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67 lines
2.5 KiB
67 lines
2.5 KiB
3 months ago
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// Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
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//
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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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//
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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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//
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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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//
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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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///
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/// This file implements the distance function.
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#include "sql/gis/distance.h"
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#include "sql/gis/distance_functor.h"
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#include <cmath> // std::isfinite
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#include "sql/sql_exception_handler.h" // handle_gis_exception
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#include "my_inttypes.h" // MYF
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#include "my_sys.h" // my_error
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#include "mysqld_error.h" // Error codes
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namespace gis {
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bool distance(const dd::Spatial_reference_system *srs, const Geometry *g1,
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const Geometry *g2, double *distance, bool *is_null) noexcept {
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try {
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DBUG_ASSERT(g1->coordinate_system() == g2->coordinate_system());
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DBUG_ASSERT(srs == nullptr ||
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((srs->is_cartesian() &&
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g1->coordinate_system() == Coordinate_system::kCartesian) ||
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(srs->is_geographic() &&
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g1->coordinate_system() == Coordinate_system::kGeographic)));
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if ((*is_null = (g1->is_empty() || g2->is_empty()))) return false;
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Distance dist(srs ? srs->semi_major_axis() : 0.0,
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srs ? srs->semi_minor_axis() : 0.0);
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*distance = dist(g1, g2);
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} catch (...) {
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handle_gis_exception("st_distance");
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return true;
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}
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if (!std::isfinite(*distance) || *distance < 0.0) {
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my_error(ER_GIS_INVALID_DATA, MYF(0), "st_distance");
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return true;
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}
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return false;
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}
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} // namespace gis
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