Method updateData

app/src/UI/Widgets/Plot.cpp:517–576

* @brief Updates the plot data from the Dashboard. */

 * @brief Updates the plot data from the Dashboard.
 */
void Widgets::Plot::updateData()
{
  static thread_local DSP::DownsampleWorkspace ws;

  if (!isEnabled())
    return;

  if (!VALIDATE_WIDGET(SerialStudio::DashboardPlot, m_index))
    return;

  if (m_timeAxis && m_sweepEnabled) {
    double xLo = m_minX;
    double xHi = m_maxX;
    clampToVisibleX(xLo, xHi);
    const auto& ring = UI::Dashboard::instance().plotSweep(m_index).display(0);
    (void)DSP::downsampleWindowAbsolute(
      ring.time, ring.value, xLo, xHi, m_dataW, m_dataH, m_data, &ws);
    return;
  }

  if (m_timeAxis) {
    double xLo = m_minX;
    double xHi = m_maxX;
    clampToVisibleX(xLo, xHi);
    const auto& ring = UI::Dashboard::instance().plotTimeRing(m_index);
    (void)DSP::downsampleTimeWindow(ring.time, ring.value, xLo, xHi, m_dataW, m_dataH, m_data, &ws);
    return;
  }

  const auto& plotData = UI::Dashboard::instance().plotData(m_index);

  if (m_monotonicData) {
    (void)DSP::downsampleMonotonic(plotData, m_dataW, m_dataH, m_data, &ws);
    return;
  }

  const auto& X = *plotData.x;
  const auto& Y = *plotData.y;

  const qsizetype count = std::min(X.size(), Y.size());
  if (m_data.size() != count)
    m_data.resize(count);

  if (X.capacity() == 0 || Y.capacity() == 0)
    return;

  QPointF* out            = m_data.data();
  const auto* xData       = X.raw();
  const auto* yData       = Y.raw();
  const std::size_t xMask = X.storageMask();
  const std::size_t yMask = Y.storageMask();
  std::size_t xIdx        = X.frontIndex();
  std::size_t yIdx        = Y.frontIndex();
  for (qsizetype i = 0; i < count; ++i) {
    out[i].setX(xData[xIdx]);
    out[i].setY(yData[yIdx]);
    xIdx = (xIdx + 1) & xMask;
    yIdx = (yIdx + 1) & yMask;