Method GetInternalAnnotationOutputPort

Views/Core/vtkDataRepresentation.cxx:195–222

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//------------------------------------------------------------------------------
vtkAlgorithmOutput* vtkDataRepresentation::GetInternalAnnotationOutputPort(int port, int conn)
{
  if (port >= this->GetNumberOfInputPorts() || conn >= this->GetNumberOfInputConnections(port))
  {
    vtkErrorMacro(
      "Port " << port << ", connection " << conn << " is not defined on this representation.");
    return nullptr;
  }

  // Create a new filter in the cache if necessary.
  std::pair<int, int> p(port, conn);
  if (this->Implementation->ConvertDomainInternal.find(p) ==
    this->Implementation->ConvertDomainInternal.end())
  {
    this->Implementation->ConvertDomainInternal[p] =
      vtkSmartPointer<vtkConvertSelectionDomain>::New();
  }

  // Set up the inputs to the cached filter.
  vtkConvertSelectionDomain* domain = this->Implementation->ConvertDomainInternal[p];
  domain->SetInputConnection(0, this->GetAnnotationLink()->GetOutputPort(0));
  domain->SetInputConnection(1, this->GetAnnotationLink()->GetOutputPort(1));
  domain->SetInputConnection(2, this->GetInternalOutputPort(port, conn));

  // Output port 0 of the convert domain filter is the linked
  // annotation(s) (the vtkAnnotationLayers object).
  return domain->GetOutputPort();
}

//------------------------------------------------------------------------------
vtkAlgorithmOutput* vtkDataRepresentation::GetInternalSelectionOutputPort(int port, int conn)