Method UpdateStepsGroup

IO/HDF/vtkHDFWriter.cxx:602–637

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

//------------------------------------------------------------------------------
bool vtkHDFWriter::UpdateStepsGroup(hid_t group, vtkUnstructuredGrid* input)
{
  if (!this->IsTemporal)
  {
    return true;
  }

  vtkDebugMacro("Update UG Steps group for file " << this->GetFileName());

  hid_t stepsGroup = this->Impl->GetStepsGroup(group);
  bool result = true;

  vtkIdType pointsOffset = 0;
  vtkIdType connectivitiesIdOffset = 0;

  if (this->HasGeometryChangedFromPreviousStep(input))
  {
    pointsOffset = input->GetNumberOfPoints();
    connectivitiesIdOffset = input->GetCells()->GetNumberOfConnectivityIds();
    result &= this->Impl->AddOrCreateSingleValueDataset(
      stepsGroup, "PointOffsets", pointsOffset, true, true);
    result &= this->Impl->AddOrCreateSingleValueDataset(
      stepsGroup, "ConnectivityIdOffsets", connectivitiesIdOffset, true, true);
  }
  // Don't write offsets for the last timestep
  if (this->CurrentTimeIndex < this->NumberOfTimeSteps - 1)
  {
    result &= this->Impl->AddOrCreateSingleValueDataset(stepsGroup, "PointOffsets", 0, true);
    result &= this->Impl->AddOrCreateSingleValueDataset(stepsGroup, "CellOffsets", 0, true);
    result &=
      this->Impl->AddOrCreateSingleValueDataset(stepsGroup, "ConnectivityIdOffsets", 0, true);
    result &= this->Impl->AddOrCreateSingleValueDataset(stepsGroup, "PartOffsets", 0, true);
  }

  return result;
}

//------------------------------------------------------------------------------
bool vtkHDFWriter::UpdateStepsGroup(hid_t group, vtkPolyData* input)