Method SetDataNode

Modules/QtWidgetsExt/src/QmitkTransferFunctionWidget.cpp:95–164

}

void QmitkTransferFunctionWidget::SetDataNode(mitk::DataNode *node, mitk::TimeStepType timestep, const mitk::BaseRenderer *renderer)
{
  if (node)
  {
    tfpToChange = dynamic_cast<mitk::TransferFunctionProperty *>(node->GetProperty("TransferFunction", renderer));
    if (!tfpToChange)
    {
      if (!dynamic_cast<mitk::Image *>(node->GetData()))
      {
        MITK_WARN << "QmitkTransferFunctionWidget::SetDataNode called with non-image node";
        goto turnOff;
      }

      node->SetProperty("TransferFunction", tfpToChange = mitk::TransferFunctionProperty::New());
    }

    mitk::TransferFunction::Pointer tf = tfpToChange->GetValue();

    if (mitk::Image *data = dynamic_cast<mitk::Image *>(node->GetData()))
    {
      mitk::SimpleHistogram *h = nullptr;
      if (data->GetTimeSteps() > 1)
      {
        if (!data->GetTimeGeometry()->IsValidTimeStep(timestep))
        {
          return;
        }
        mitk::ImageTimeSelector::Pointer timeselector = mitk::ImageTimeSelector::New();
        timeselector->SetInput(data);
        timeselector->SetTimeNr(timestep);
        timeselector->UpdateLargestPossibleRegion();
        auto inputImage = timeselector->GetOutput();
        h = histogramCache[inputImage];
      }
      else
      {
        h = histogramCache[data];
      }

      auto rangeSliderMin = h->GetMin();
      auto rangeSliderMax = h->GetMax();
      UpdateStepSize();

      m_Controls->m_RangeSlider->blockSignals(true);
      m_Controls->m_RangeSlider->setMinimum(rangeSliderMin);
      m_Controls->m_RangeSlider->setMaximum(rangeSliderMax);
      m_Controls->m_RangeSlider->setMinimumValue(rangeSliderMin);
      m_Controls->m_RangeSlider->setMaximumValue(rangeSliderMax);
      m_Controls->m_RangeSlider->blockSignals(false);

      m_Controls->m_ScalarOpacityFunctionCanvas->SetHistogram(h);
      m_Controls->m_GradientOpacityCanvas->SetHistogram(h);
      m_Controls->m_ColorTransferFunctionCanvas->SetHistogram(h);
    }

    OnUpdateCanvas();

    return;