128 lines
5.0 KiB
C++
128 lines
5.0 KiB
C++
// 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.
|
|
|
|
#include "wkb_visitor.h"
|
|
|
|
#include <cstdint>
|
|
|
|
#include "my_byteorder.h" // float8store, int4store
|
|
|
|
namespace gis {
|
|
|
|
bool Wkb_visitor::visit_enter(Linestring *ls) {
|
|
*m_wkb_current_position = '\x01'; // Little-endian
|
|
m_wkb_current_position++;
|
|
int4store(m_wkb_current_position, static_cast<uint32>(ls->type()));
|
|
m_wkb_current_position += sizeof(std::uint32_t);
|
|
int4store(m_wkb_current_position, ls->size());
|
|
m_wkb_current_position += sizeof(std::uint32_t);
|
|
|
|
if (m_srs != nullptr && m_srs->is_geographic()) {
|
|
for (size_t i = 0; i < ls->size(); i++) {
|
|
float8store(m_wkb_current_position,
|
|
m_srs->from_normalized_longitude((*ls)[i].x()));
|
|
m_wkb_current_position += sizeof(double);
|
|
float8store(m_wkb_current_position,
|
|
m_srs->from_normalized_latitude((*ls)[i].y()));
|
|
m_wkb_current_position += sizeof(double);
|
|
}
|
|
} else {
|
|
for (size_t i = 0; i < ls->size(); i++) {
|
|
float8store(m_wkb_current_position, (*ls)[i].x());
|
|
m_wkb_current_position += sizeof(double);
|
|
float8store(m_wkb_current_position, (*ls)[i].y());
|
|
m_wkb_current_position += sizeof(double);
|
|
}
|
|
}
|
|
DBUG_ASSERT(m_wkb + m_wkb_size >= m_wkb_current_position);
|
|
return true;
|
|
}
|
|
|
|
bool Wkb_visitor::visit_enter(Polygon *py) {
|
|
*m_wkb_current_position = '\x01'; // Little-endian
|
|
m_wkb_current_position++;
|
|
int4store(m_wkb_current_position, static_cast<uint32>(py->type()));
|
|
m_wkb_current_position += sizeof(std::uint32_t);
|
|
int4store(m_wkb_current_position, py->size());
|
|
m_wkb_current_position += sizeof(std::uint32_t);
|
|
|
|
for (size_t i = 0; i < py->size(); i++) {
|
|
Linearring &lr = i == 0 ? py->exterior_ring() : py->interior_ring(i - 1);
|
|
int4store(m_wkb_current_position, lr.size());
|
|
m_wkb_current_position += sizeof(std::uint32_t);
|
|
if (m_srs != nullptr && m_srs->is_geographic()) {
|
|
for (size_t i = 0; i < lr.size(); i++) {
|
|
float8store(m_wkb_current_position,
|
|
m_srs->from_normalized_longitude(lr[i].x()));
|
|
m_wkb_current_position += sizeof(double);
|
|
float8store(m_wkb_current_position,
|
|
m_srs->from_normalized_latitude(lr[i].y()));
|
|
m_wkb_current_position += sizeof(double);
|
|
}
|
|
} else {
|
|
for (size_t i = 0; i < lr.size(); i++) {
|
|
float8store(m_wkb_current_position, lr[i].x());
|
|
m_wkb_current_position += sizeof(double);
|
|
float8store(m_wkb_current_position, lr[i].y());
|
|
m_wkb_current_position += sizeof(double);
|
|
}
|
|
}
|
|
}
|
|
DBUG_ASSERT(m_wkb + m_wkb_size >= m_wkb_current_position);
|
|
return true;
|
|
}
|
|
|
|
bool Wkb_visitor::visit_enter(Geometrycollection *gc) {
|
|
*m_wkb_current_position = '\x01'; // Little-endian
|
|
m_wkb_current_position++;
|
|
int4store(m_wkb_current_position, static_cast<uint32>(gc->type()));
|
|
m_wkb_current_position += sizeof(std::uint32_t);
|
|
int4store(m_wkb_current_position, gc->size());
|
|
m_wkb_current_position += sizeof(std::uint32_t);
|
|
DBUG_ASSERT(m_wkb + m_wkb_size >= m_wkb_current_position);
|
|
return false;
|
|
}
|
|
|
|
bool Wkb_visitor::visit(Point *pt) {
|
|
*m_wkb_current_position = '\x01'; // Little-endian
|
|
m_wkb_current_position++;
|
|
int4store(m_wkb_current_position, static_cast<uint32>(pt->type()));
|
|
m_wkb_current_position += sizeof(std::uint32_t);
|
|
if (m_srs != nullptr && m_srs->is_geographic()) {
|
|
float8store(m_wkb_current_position,
|
|
m_srs->from_normalized_longitude(pt->x()));
|
|
m_wkb_current_position += sizeof(double);
|
|
float8store(m_wkb_current_position,
|
|
m_srs->from_normalized_latitude(pt->y()));
|
|
m_wkb_current_position += sizeof(double);
|
|
} else {
|
|
float8store(m_wkb_current_position, pt->x());
|
|
m_wkb_current_position += sizeof(double);
|
|
float8store(m_wkb_current_position, pt->y());
|
|
m_wkb_current_position += sizeof(double);
|
|
}
|
|
DBUG_ASSERT(m_wkb + m_wkb_size >= m_wkb_current_position);
|
|
return false;
|
|
}
|
|
|
|
} // namespace gis
|