Method GetOutputPortInformation

Common/ExecutionModel/vtkAlgorithm.cxx:1087–1112

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
vtkInformation* vtkAlgorithm::GetOutputPortInformation(int port)
{
  if (!this->OutputPortIndexInRange(port, "get information object for"))
  {
    return nullptr;
  }

  // Get the output port information object.
  vtkInformation* info = this->OutputPortInformation->GetInformationObject(port);

  // Fill it if it has not yet been filled.
  if (!info->Has(PORT_REQUIREMENTS_FILLED()))
  {
    if (this->FillOutputPortInformation(port, info))
    {
      info->Set(PORT_REQUIREMENTS_FILLED(), 1);
    }
    else
    {
      info->Clear();
    }
  }

  // Return the information object.
  return info;
}

//------------------------------------------------------------------------------
int vtkAlgorithm::FillInputPortInformation(int, vtkInformation*)