Method Initialize

Filters/CellGrid/vtkUnstructuredGridToCellGrid.cxx:36–67

vtkStandardNewMacro(vtkUnstructuredGridToCellGrid::TranscribeQuery);

bool vtkUnstructuredGridToCellGrid::TranscribeQuery::Initialize()
{
  bool ok = this->Superclass::Initialize();
  if (!this->Input)
  {
    return false;
  }
  switch (this->Phase)
  {
    case VTK_TRANSCRIBE_CELLGRID_PHASE_CLAIM:
    {
      // Reset all claims (erasing the number of cells, but preserving any
      // preferred cell-type and priority value.
      for (auto& entry : this->CellTypeMap)
      {
        entry.second.NumberOfCells =
          -1; // TODO: If the input dataset has not been modified, do nothing?
      }
      // Populate the CellTypeMap with numbers of cells of each cell type present.
      auto it = vtk::TakeSmartPointer(this->Input->NewCellIterator());
      for (it->InitTraversal(); !it->IsDoneWithTraversal(); it->GoToNextCell())
      {
        int cellType = it->GetCellType();
        ++(this->CellTypeMap[cellType].NumberOfCells);
      }
    }
    break;
    case VTK_TRANSCRIBE_CELLGRID_PHASE_CONVERT:
      break;
  }
  return ok;
}

bool vtkUnstructuredGridToCellGrid::TranscribeQuery::Finalize()
{