LasWaveformSaver.cpp

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#include "LasWaveformSaver.h"
 
#include "LasDetails.h"
 
#include <ecvPointCloud.h>
 
LasWaveformSaver::LasWaveformSaver(const ccPointCloud& pointCloud) noexcept
    : m_array(29, '\0')
    , m_pointCloud(pointCloud)
{
}
 
void LasWaveformSaver::handlePoint(size_t index, laszip_point& point)
{
    assert(index < m_pointCloud.size());
    const ccWaveform& w = m_pointCloud.waveforms().at(index);
 
    {
        QDataStream stream(&m_array, QIODevice::WriteOnly);
        stream.setByteOrder(QDataStream::ByteOrder::LittleEndian);
        stream << w.descriptorID();
        stream << static_cast<quint64>(w.dataOffset() + LasDetails::EvlrHeader::SIZE);
        stream << w.byteCount();
        stream << w.echoTime_ps();
        stream << w.beamDir().x << w.beamDir().y << w.beamDir().z;
    }
 
    memcpy(point.wave_packet, m_array.constData(), 29);
}