Method ProcessUnstructuredGrid

Filters/CellGrid/vtkUnstructuredGridToCellGrid.cxx:277–313

}

bool vtkUnstructuredGridToCellGrid::ProcessUnstructuredGrid(
  vtkUnstructuredGrid* input, vtkCellGrid* output)
{
  // Add every type of cell to the output (so the query
  // asks each one which input cells it can claim).
  output->Initialize();
  output->AddAllCellMetadata();

  // Now claim cells:
  this->Request->Input = input;
  this->Request->Output = output;
  this->Request->Phase = VTK_TRANSCRIBE_CELLGRID_PHASE_CLAIM;
  if (!output->Query(this->Request))
  {
    vtkErrorMacro("Cell-grid failed to claim input cells.");
    return false;
  }
  this->Request->Input = input;
  this->Request->Output = output;
  if (!this->Request->SumOutputCounts())
  {
    // TODO: Warn or error or ignore when unhandled input cells exist? Should be configurable.
    vtkWarningMacro("One or more unhandled input cells exist.");
  }
  this->Request->Phase = VTK_TRANSCRIBE_CELLGRID_PHASE_CONVERT;
  if (!output->Query(this->Request))
  {
    vtkErrorMacro("Cell-grid failed to transcribe some claimed input cells.");
    return false;
  }
  output->RemoveUnusedCellMetadata();

  // TODO: Will we ever copy schema/content information from the unstructured grid?
  output->SetSchema("dg leaf", 1);
  output->SetContentVersion(1);
  return true;
}

VTK_ABI_NAMESPACE_END