Method WriteComposite

IO/ParallelXML/vtkXMLPMultiBlockDataWriter.cxx:159–243

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//------------------------------------------------------------------------------
int vtkXMLPMultiBlockDataWriter::WriteComposite(
  vtkCompositeDataSet* compositeData, vtkXMLDataElement* parentXML, int& currentFileIndex)
{
  if (!(compositeData->IsA("vtkMultiBlockDataSet") || compositeData->IsA("vtkMultiPieceDataSet")))
  {
    vtkErrorMacro("Unsupported composite dataset type: " << compositeData->GetClassName() << ".");
    return 0;
  }

  // Write each input.
  vtkSmartPointer<vtkDataObjectTreeIterator> iter;
  iter.TakeReference(vtkDataObjectTreeIterator::SafeDownCast(compositeData->NewIterator()));
  iter->VisitOnlyLeavesOff();
  iter->TraverseSubTreeOff();
  iter->SkipEmptyNodesOff();

  int retVal = 0;
  int indexCounter = 0;
  for (iter->InitTraversal(); !iter->IsDoneWithTraversal(); iter->GoToNextItem(), indexCounter++)
  {
    vtkDataObject* curDO = iter->GetCurrentDataObject();
    const char* name = nullptr;
    if (iter->HasCurrentMetaData())
    {
      name = iter->GetCurrentMetaData()->Get(vtkCompositeDataSet::NAME());
    }

    if (curDO && curDO->IsA("vtkCompositeDataSet"))
    {
      // if node is a supported composite dataset
      // note in structure file and recurse.
      vtkXMLDataElement* tag = vtkXMLDataElement::New();

      if (curDO->IsA("vtkMultiPieceDataSet"))
      {
        tag->SetName("Piece");
        tag->SetIntAttribute("index", indexCounter);

        if (name)
        {
          tag->SetAttribute("name", name);
        }
      }
      else if (curDO->IsA("vtkMultiBlockDataSet"))
      {
        tag->SetName("Block");
        tag->SetIntAttribute("index", indexCounter);

        if (name)
        {
          tag->SetAttribute("name", name);
        }
      }
      vtkCompositeDataSet* curCD = vtkCompositeDataSet::SafeDownCast(curDO);
      if (this->WriteComposite(curCD, tag, currentFileIndex))
      {
        parentXML->AddNestedElement(tag);
        retVal = 1;