Function vtkTrimSelection

Filters/Extraction/vtkExtractSelection.cxx:209–226

---------------------------------------------------------------------------- Remove all selection nodes that their propId = vtkSelectionNode::PROCESS_ID() is not the same as the processId = vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER().

// Remove all selection nodes that their propId = vtkSelectionNode::PROCESS_ID()
// is not the same as the processId = vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER().
void vtkTrimSelection(vtkSelection* input, int processId)
{
  if (input)
  {
    unsigned int numNodes = input->GetNumberOfNodes();
    for (unsigned int cc = 0; cc < numNodes; cc++)
    {
      vtkSelectionNode* node = input->GetNode(cc);
      int propId = (node->GetProperties()->Has(vtkSelectionNode::PROCESS_ID()))
        ? node->GetProperties()->Get(vtkSelectionNode::PROCESS_ID())
        : -1;
      if (propId != -1 && processId != -1 && propId != processId)
      {
        input->RemoveNode(node);
      }
    }
  }
}
}

//------------------------------------------------------------------------------