Method RequestInformation

IO/Geometry/vtkOpenFOAMReader.cxx:11413–11452

------------------------------------------------------------------------------ RequestInformation

//------------------------------------------------------------------------------
// RequestInformation
int vtkOpenFOAMReader::RequestInformation(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** vtkNotUsed(inputVector), vtkInformationVector* outputVector)
{
#if VTK_OPENFOAM_TIME_PROFILING
  this->InitializeRequestInformation();
#endif
  if (!this->FileName || !*(this->FileName))
  {
    vtkErrorMacro("FileName has to be specified!");
    return 0;
  }

  if (this->Parent == this &&
    ((this->FileNameOld != this->FileName) || this->Refresh ||
      (this->ListTimeStepsByControlDict != this->GetListTimeStepsByControlDictOld()) ||
      (this->SkipZeroTime != this->GetSkipZeroTimeOld())))
  {
    // Retain selection status when just refreshing a case
    if (!this->FileNameOld.empty() && this->FileNameOld != this->FileName)
    {
      // Clear selections
      this->CellDataArraySelection->RemoveAllArrays();
      this->PointDataArraySelection->RemoveAllArrays();
      this->LagrangianDataArraySelection->RemoveAllArrays();
      this->PatchDataArraySelection->RemoveAllArrays();
    }

    // Reset NumberOfReaders here so that the variable will not be
    // reset unwantedly when MakeInformationVector() is called from
    // vtkPOpenFOAMReader
    this->Readers.clear();

    if (!this->MakeInformationVector(outputVector, {}) || !this->MakeMetaDataAtTimeStep(true))
    {
      return 0;
    }
    this->Refresh = false;
  }
  return 1;
}

//------------------------------------------------------------------------------
// RequestData