Method GetInputPortInformation

Common/ExecutionModel/vtkAlgorithm.cxx:1059–1084

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

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

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

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

  // Return the information object.
  return info;
}

//------------------------------------------------------------------------------
vtkInformation* vtkAlgorithm::GetOutputPortInformation(int port)