Method RequestData

IO/Geometry/vtkFLUENTReader.cxx:465–538

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

//------------------------------------------------------------------------------
int vtkFLUENTReader::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** vtkNotUsed(inputVector), vtkInformationVector* outputVector)
{
  vtkInformation* outInfo = outputVector->GetInformationObject(0);

  vtkMultiBlockDataSet* output =
    vtkMultiBlockDataSet::SafeDownCast(outInfo->Get(vtkMultiBlockDataSet::DATA_OBJECT()));

  std::vector<unsigned int> disabledZones;
  bool areAllZonesDisabled = true;
  this->DisableZones(disabledZones, areAllZonesDisabled);

  if (this->ZoneSections.empty() || !areAllZonesDisabled)
  {
    bool areCellsEnabled = this->AreCellsEnabled();

    // Get all the information from the zones (dimensions, nodes, cells, faces,...).
    this->ParseZones(areCellsEnabled);
    //  Removes unnecessary faces from the cells.
    this->CleanCells();
    // Fill cells with corresponding nodes.
    try
    {
      this->PopulateCellNodes();
    }
    catch (std::runtime_error const& e)
    {
      vtkErrorMacro(<< e.what());
      return 0;
    }

    this->ParseDataZones(areCellsEnabled);
  }

  this->NumberOfCells = static_cast<vtkIdType>(this->Cells.size());

  this->GetArraysFromSubSections();

  // zone ID -> block idx lookup map
  std::vector<size_t> zoneIDToBlockIdx(this->CurrentZoneSections.size());

  // fast access to block UGs to avoid unnecessary SafeDowncast while looping over cells/faces
  std::vector<vtkSmartPointer<vtkUnstructuredGrid>> blockUGs(this->CurrentZoneSections.size());

  this->InitOutputBlocks(output, zoneIDToBlockIdx, blockUGs);

  this->DisableCellsAndFaces(disabledZones);

  this->FillMultiblock(disabledZones, zoneIDToBlockIdx, blockUGs);

  this->FillMultiblockData(disabledZones, zoneIDToBlockIdx, blockUGs);

  if (!this->CacheData)
  {
    this->IsFilePreParsed = false;
    this->Cells.clear();
    this->CurrentCells.clear();
    this->CurrentFaces.clear();