Method RequestData

IO/NetCDF/vtkNetCDFUGRIDReader.cxx:118–195

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

//--------------------------------------------------------------------------------------------------
int vtkNetCDFUGRIDReader::RequestData(
  vtkInformation*, vtkInformationVector**, vtkInformationVector* outputVector)
{
  this->UpdateProgress(0.0);

  if (!this->Open())
  {
    vtkErrorMacro("Can not open file.");
    return 0;
  }

  this->UpdateProgress(0.125);

  if (!this->ParseHeader())
  {
    vtkErrorMacro("Can not parse header.");
    this->Close();
    return 0;
  }

  vtkInformation* outInfo = outputVector->GetInformationObject(0);
  vtkUnstructuredGrid* output =
    vtkUnstructuredGrid::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));

  vtkInformationDoubleKey* timeKey =
    vtkInformationDoubleKey::SafeDownCast(vtkStreamingDemandDrivenPipeline::UPDATE_TIME_STEP());

  double time{};
  if (outInfo->Has(timeKey))
  {
    time = outInfo->Get(timeKey);
  }

  output->GetInformation()->Set(vtkDataObject::DATA_TIME_STEP(), time);

  std::size_t timeStep{};
  for (std::size_t step{}; step < this->TimeSteps.size(); step++)
  {
    if (this->TimeSteps[step] >= time)
    {
      timeStep = step;
      break;
    }
  }

  this->UpdateProgress(0.25);

  if (!this->FillPoints(output))
  {
    vtkErrorMacro("Failed to get point data");
    this->Close();
    return 0;
  }

  this->UpdateProgress(0.5);

  if (!this->FillCells(output))
  {