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108 lines
3.8 KiB
108 lines
3.8 KiB
// 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 length functor and function.
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#include <cmath> // std::isfinite
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#include <boost/geometry.hpp>
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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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#include "sql/dd/types/spatial_reference_system.h" // dd::Spatial_reference_system
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#include "sql/gis/geometries.h"
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#include "sql/gis/geometries_traits.h"
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#include "sql/gis/length.h"
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#include "sql/gis/length_functor.h"
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#include "sql/sql_exception_handler.h" // handle_gis_exception
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namespace bg = boost::geometry;
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namespace bgs = boost::geometry::srs;
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namespace bgsd = boost::geometry::strategy::distance;
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namespace gis {
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Length::Length(double major, double minor)
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: m_geographic_strategy(new bgsd::andoyer<bgs::spheroid<double>>(
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bgs::spheroid<double>(major, minor))) {}
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double Length::operator()(const Geometry &g1) const { return apply(*this, g1); }
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double Length::eval(const Geometry &) const {
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DBUG_ASSERT(false); /* purecov: inspected */
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throw std::exception();
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}
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double Length::eval(const Geographic_linestring &g1) const {
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return bg::length(g1, *m_geographic_strategy);
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}
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double Length::eval(const Cartesian_linestring &g1) const {
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return bg::length(g1);
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}
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/////////////////////////////////////////////////////////////////////////////
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double Length::eval(const Geographic_multilinestring &g1) const {
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return bg::length(g1, *m_geographic_strategy);
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}
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double Length::eval(const Cartesian_multilinestring &g1) const {
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return bg::length(g1);
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}
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/////////////////////////////////////////////////////////////////////////////
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bool length(const dd::Spatial_reference_system *srs, const Geometry *g1,
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double *length, bool *null) noexcept {
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try {
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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 ((*null = (g1->is_empty()))) return false;
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if ((g1->type() != Geometry_type::kLinestring) &&
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(g1->type() != Geometry_type::kMultilinestring)) {
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*null = true;
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return false;
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}
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Length len(srs ? srs->semi_major_axis() : 0.0,
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srs ? srs->semi_minor_axis() : 0.0);
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*length = len(*g1);
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} catch (...) {
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handle_gis_exception("st_length");
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return true;
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}
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if (!std::isfinite(*length) || *length < 0.0) {
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my_error(ER_DATA_OUT_OF_RANGE, MYF(0), "Length", "st_length");
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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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