Method RequestInformation

IO/AMR/vtkAMRBaseReader.cxx:224–259

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

//------------------------------------------------------------------------------
int vtkAMRBaseReader::RequestInformation(
  vtkInformation* rqst, vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
  if (this->LoadedMetaData)
  {
    return (1);
  }

  this->Superclass::RequestInformation(rqst, inputVector, outputVector);

  if (this->Metadata == nullptr)
  {
    this->Metadata = vtkOverlappingAMR::New();
  }
  else
  {
    this->Metadata->Initialize();
  }
  this->FillMetaData();
  vtkInformation* info = outputVector->GetInformationObject(0);
  assert("pre: output information object is nullptr" && (info != nullptr));
  info->Set(vtkCompositeDataPipeline::COMPOSITE_DATA_META_DATA(), this->Metadata);
  if (this->Metadata && this->Metadata->GetInformation()->Has(vtkDataObject::DATA_TIME_STEP()))
  {
    double dataTime = this->Metadata->GetInformation()->Get(vtkDataObject::DATA_TIME_STEP());
    info->Set(vtkStreamingDemandDrivenPipeline::TIME_STEPS(), &dataTime, 1);

    vtkTimerLog::MarkStartEvent("vtkAMRBaseReader::GenerateParentChildInformation");
    this->Metadata->GenerateParentChildInformation();
    vtkTimerLog::MarkEndEvent("vtkAMRBaseReader::GenerateParentChildInformation");
  }

  info->Set(CAN_HANDLE_PIECE_REQUEST(), 1);
  this->LoadedMetaData = true;
  return 1;
}

//------------------------------------------------------------------------------
void vtkAMRBaseReader::SetupBlockRequest(vtkInformation* outInf)