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128 lines
4.5 KiB
128 lines
4.5 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 covered_by functor and mbr_covered_by function.
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#include <boost/geometry.hpp>
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#include "sql/dd/types/spatial_reference_system.h" // dd::Spatial_reference_system
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#include "sql/gis/box.h"
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#include "sql/gis/box_traits.h"
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#include "sql/gis/covered_by_functor.h"
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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/mbr_utils.h"
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#include "sql/gis/relops.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 gis {
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Covered_by::Covered_by(double semi_major, double semi_minor)
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: m_semi_major(semi_major), m_semi_minor(semi_minor) {}
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bool Covered_by::operator()(const Geometry *g1, const Geometry *g2) const {
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return apply(*this, g1, g2);
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}
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bool Covered_by::operator()(const Box *b1, const Box *b2) const {
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DBUG_ASSERT(b1->coordinate_system() == b2->coordinate_system());
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switch (b1->coordinate_system()) {
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case Coordinate_system::kCartesian:
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return eval(down_cast<const Cartesian_box *>(b1),
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down_cast<const Cartesian_box *>(b2));
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case Coordinate_system::kGeographic:
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return eval(down_cast<const Geographic_box *>(b1),
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down_cast<const Geographic_box *>(b2));
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}
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DBUG_ASSERT(false);
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return false;
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}
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bool Covered_by::eval(const Geometry *g1, const Geometry *g2) const {
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// Currently only implemented for boxes (MBRs).
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DBUG_ASSERT(false);
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throw not_implemented_exception::for_non_projected(*g1, *g2);
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}
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//////////////////////////////////////////////////////////////////////////////
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// covered_by(Box, Box)
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bool Covered_by::eval(const Cartesian_box *b1, const Cartesian_box *b2) const {
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return bg::covered_by(*b1, *b2);
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}
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bool Covered_by::eval(const Geographic_box *b1,
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const Geographic_box *b2) const {
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return bg::covered_by(*b1, *b2);
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}
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//////////////////////////////////////////////////////////////////////////////
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bool mbr_covered_by(const dd::Spatial_reference_system *srs, const Geometry *g1,
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const Geometry *g2, const char *func_name, bool *covered_by,
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bool *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 ((*null = (g1->is_empty() || g2->is_empty()))) return false;
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Covered_by covered_by_func(srs ? srs->semi_major_axis() : 0.0,
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srs ? srs->semi_minor_axis() : 0.0);
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switch (g1->coordinate_system()) {
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case Coordinate_system::kCartesian: {
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Cartesian_box mbr1;
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box_envelope(g1, srs, &mbr1);
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Cartesian_box mbr2;
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box_envelope(g2, srs, &mbr2);
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*covered_by = covered_by_func(&mbr1, &mbr2);
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break;
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}
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case Coordinate_system::kGeographic: {
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Geographic_box mbr1;
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box_envelope(g1, srs, &mbr1);
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Geographic_box mbr2;
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box_envelope(g2, srs, &mbr2);
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*covered_by = covered_by_func(&mbr1, &mbr2);
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break;
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}
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}
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} catch (...) {
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handle_gis_exception(func_name);
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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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