| RDB 2

rdb-example-05-remove-points.cpp
/*
*******************************************************************************
*
* Copyright 2025 RIEGL Laser Measurement Systems
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*
*******************************************************************************
*/
/*!
*******************************************************************************
*
* \file rdb-example-05-remove-points.cpp
* \author RIEGL LMS GmbH, Austria
* \brief RDB example 4: Remove points
* \version 2015-10-14/AW: Initial version
* \version 2018-07-10/AW: Use new bindBuffer() instead of bind() function
*
* This example shows how to open an existing database and delete some points.
* This example is based on the database of rdb-example-1-create-database.
*
* Build instructions see "interface/cpp/riegl/README.TXT".
*
*******************************************************************************
*/
#include <vector>
#include <cstdint>
#include <iostream>
#include <exception>
#include <riegl/rdb.hpp>
#include <riegl/rdb/default.hpp>
int main()
{
try
{
// New RDB library context
riegl::rdb::Context context;
// Access existing database
riegl::rdb::Pointcloud rdb(context);
riegl::rdb::pointcloud::OpenSettings settings;
rdb.open("pointcloud.rdbx", settings);
// Before we can modify the database, we must start a transaction
riegl::rdb::pointcloud::TransactionScope transaction(
rdb, // database object
"Remove", // transaction title
"Point Filter v1.0" // software name
);
// Prepare point attribute buffers
const uint32_t BUFFER_SIZE = 10000;
std::vector< uint64_t > bufferIdentifier(BUFFER_SIZE);
// Start new select query to get point ids of points with point class of 7
riegl::rdb::pointcloud::QuerySelect select = rdb.select("riegl.class == 7");
select.bindBuffer(riegl::rdb::pointcloud::RDB_RIEGL_ID, bufferIdentifier);
// Start new remove query and define buffers
riegl::rdb::pointcloud::QueryRemove remove = rdb.remove();
remove.bindBuffer(riegl::rdb::pointcloud::RDB_RIEGL_ID, bufferIdentifier);
// Process all points block-wise
while (const uint32_t count = select.next(BUFFER_SIZE))
{
// Actually remove points
remove.next(count);
}
// Finally commit transaction
transaction.commit();
// Success
return 0;
}
catch(const riegl::rdb::Error &error)
{
std::cerr << error.what() << " (" << error.details() << ")" << std::endl;
return 1; // error
}
catch(const std::exception &error)
{
std::cerr << error.what() << std::endl;
return 1; // error
}
}