Method RequestInformation

IO/NetCDF/vtkNetCDFCAMReader.cxx:288–380

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

//------------------------------------------------------------------------------
int vtkNetCDFCAMReader::RequestInformation(vtkInformation* vtkNotUsed(reqInfo),
  vtkInformationVector** vtkNotUsed(inputVector), vtkInformationVector* outputVector)
{
  if (this->FileName == nullptr)
  {
    vtkWarningMacro("Missing a file name.");
    return 0;
  }

  if (this->CurrentFileName != nullptr && strcmp(this->CurrentFileName, this->FileName) != 0)
  {
    this->Internals->closePoints();
    this->PointDataArraySelection->RemoveAllArrays();
    this->SetCurrentFileName(nullptr);
  }
  if (this->Internals->nc_points == -1)
  {
    if (!this->Internals->openPoints(this->FileName))
    {
      vtkErrorMacro(<< "Can't read file " << this->FileName);
      return 0;
    }
    this->SetCurrentFileName(this->FileName);
    this->BuildVarArray();
    int dimid;
    if (!this->Internals->nc_err(nc_inq_dimid(this->Internals->nc_points, "lev", &dimid), false))
    {
      size_t size;
      if (this->Internals->nc_err(nc_inq_dimlen(this->Internals->nc_points, dimid, &size)))
      {
        return 0;
      }
      this->MidpointLayersRange[1] = static_cast<int>(size - 1);
    }
    if (!this->Internals->nc_err(nc_inq_dimid(this->Internals->nc_points, "ilev", &dimid), false))
    {
      size_t size;
      if (this->Internals->nc_err(nc_inq_dimlen(this->Internals->nc_points, dimid, &size)))
      {
        return 0;
      }
      this->InterfaceLayersRange[1] = static_cast<int>(size - 1);
    }
  }
  int dimid;
  if (this->Internals->nc_err(nc_inq_dimid(this->Internals->nc_points, "time", &dimid)))
  {
    vtkErrorMacro("Cannot find the number of time steps (time dimension).");
    return 0;
  }
  size_t size;
  if (this->Internals->nc_err(nc_inq_dimlen(this->Internals->nc_points, dimid, &size)))
  {
    return 0;
  }
  this->NumberOfTimeSteps = size;
  vtkInformation* outInfo = outputVector->GetInformationObject(0);