Method SetDataNode

Modules/QtWidgetsExt/src/QmitkTransferFunctionGeneratorWidget.cpp:308–354

}

void QmitkTransferFunctionGeneratorWidget::SetDataNode(mitk::DataNode *node, mitk::TimeStepType timestep)
{
  histoGramm = nullptr;

  if (node)
  {
    tfpToChange = dynamic_cast<mitk::TransferFunctionProperty *>(node->GetProperty("TransferFunction"));

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

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

    if (mitk::Image *image = dynamic_cast<mitk::Image *>(node->GetData()))
    {
      mitk::Image::Pointer inputImage = image;
      if (image->GetTimeSteps() > 1)
      {
        if (!image->GetTimeGeometry()->IsValidTimeStep(timestep))
        {
          return;
        }
        mitk::ImageTimeSelector::Pointer timeselector = mitk::ImageTimeSelector::New();
        timeselector->SetInput(image);
        timeselector->SetTimeNr(timestep);
        timeselector->UpdateLargestPossibleRegion();
        inputImage = timeselector->GetOutput();
      }

      mitk::ImageStatisticsHolder *statistics = inputImage->GetStatistics();
      histoMinimum = statistics->GetScalarValueMin();
      histoMaximum = statistics->GetScalarValueMax();
    }
    else
    {
      MITK_WARN << "QmitkTransferFunctonGeneratorWidget does not support " << node->GetData()->GetNameOfClass()
                << " instances";
    }

    thPos = (histoMinimum + histoMaximum) / 2.0;
  }
  else
  {
    tfpToChange = nullptr;
    m_Controls->m_InfoPreset->setText(QString(""));
  }
}