RDB 2: rdb-example-10-attribute-groups.cpp

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rdb-example-10-attribute-groups.cpp
/*
*******************************************************************************
*
* Copyright 2026 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-10-attribute-groups.cpp
* \author RIEGL LMS GmbH, Austria
* \brief RDB example 10: Attribute groups
* \version 2019-04-17/AW: Initial version
*
* This example shows how to open an existing database and output the
* point attribute group names and the point attributes in each group.
*
* Example output:
*
* Coordinates/Vectors:
* - XYZ (riegl.xyz)
* Time:
* - Timestamp (riegl.timestamp)
* Primary Attributes:
* - Reflectance (riegl.reflectance)
* - Amplitude (riegl.amplitude)
* - Deviation (riegl.deviation)
* - True Color (riegl.rgba)
* - Target Index (riegl.target_index)
* - Target Count (riegl.target_count)
* Secondary Attributes:
* - Mirror Facet (riegl.mirror_facet)
* - PID (riegl.id)
* Other Attributes:
* - Selected (riegl.selected)
* - Visible (riegl.visible)
*
* Build instructions see "interface/cpp/riegl/README.TXT".
*
*******************************************************************************
*/
#include <vector>
#include <iostream>
#include <exception>
#include <riegl/rdb.hpp>
int main()
{
try
{
// Access existing database
riegl::rdb::Context context;
riegl::rdb::Pointcloud rdb(context);
riegl::rdb::pointcloud::OpenSettings settings;
rdb. open("pointcloud.rdbx", settings);
// Get list of point attributes
const std::vector<std::string> attributes(rdb. pointAttribute().list());
for (auto it = attributes.cbegin(); it != attributes.cend(); it++)
{
// Query point attribute group
static std::string current_group;
std::string group; uint32_t index(0);
rdb.pointAttribute().group(*it, group, index);
if (current_group != group) // print name of new group:
{
std::cout << group << ":" << std::endl;
current_group = group;
}
// Query and print point attribute details
const riegl::rdb::pointcloud::PointAttribute details(
rdb.pointAttribute().get(*it)
);
std::cout << " -"
<< " " << details. title << " "
<< "(" << details.name << ")"
<< std::endl;
}
// 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
}
}