Method SetupOutputData

IO/XML/vtkXMLDataReader.cxx:236–343

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

//------------------------------------------------------------------------------
void vtkXMLDataReader::SetupOutputData()
{
  this->Superclass::SetupOutputData();

  vtkDataSet* output = vtkDataSet::SafeDownCast(this->GetCurrentOutput());
  vtkPointData* pointData = output->GetPointData();
  vtkCellData* cellData = output->GetCellData();

  // Get the size of the output arrays.
  vtkIdType pointTuples = this->GetNumberOfPoints();
  vtkIdType cellTuples = this->GetNumberOfCells();

  // Allocate the arrays in the output.  We only need the information
  // from one piece because all pieces have the same set of arrays.
  vtkXMLDataElement* ePointData = this->PointDataElements[0];
  vtkXMLDataElement* eCellData = this->CellDataElements[0];

  this->NumberOfPointArrays = 0;
  this->PointDataTimeStep->clear();
  this->PointDataOffset->clear();
  if (ePointData)
  {
    this->MarkIdTypeArrays(ePointData);
    std::vector<vtkXMLDataElement*> elementsToRemove;
    for (int i = 0; i < ePointData->GetNumberOfNestedElements(); ++i)
    {
      vtkXMLDataElement* eNested = ePointData->GetNestedElement(i);
      const char* ename = eNested->GetAttribute("Name");
      if (this->PointDataArrayIsEnabled(eNested))
      {
        if (!pointData->HasArray(ename))
        {
          this->NumberOfPointArrays++;
          (*this->PointDataTimeStep)[ename] = -1;
          (*this->PointDataOffset)[ename] = -1;
          vtkAbstractArray* array = this->CreateArray(eNested);
          if (array)
          {
            array->SetNumberOfTuples(pointTuples);
            pointData->AddArray(array);
            array->Delete();
          }
          else
          {
            this->DataError = 1;
          }
        }
        else
        {
          vtkWarningMacro(
            "Another point data array named " << ename << " already exists. Ignoring.");
          elementsToRemove.push_back(eNested);
        }
      }
    }
    for (const auto& elem : elementsToRemove)
    {
      ePointData->RemoveNestedElement(elem);