Method GetCellBounds

Common/DataModel/vtkPolyData.cxx:281–298

------------------------------------------------------------------------------ Fast implementation of GetCellBounds(). Bounds are calculated without constructing a cell. This method is expected to be thread-safe.

// Fast implementation of GetCellBounds().  Bounds are calculated without
// constructing a cell. This method is expected to be thread-safe.
void vtkPolyData::GetCellBounds(vtkIdType cellId, double bounds[6])
{
  if (!this->Cells)
  {
    this->BuildCells();
  }

  const TaggedCellId tag = this->Cells->GetTag(cellId);
  if (tag.IsDeleted())
  {
    std::fill_n(bounds, 6, 0.);
    return;
  }

  vtkCellArray* cells = this->GetCellArrayInternal(tag);
  const vtkIdType localCellId = tag.GetCellId();
  cells->Dispatch(ComputeCellBoundsVisitor{}, this->Points, localCellId, bounds);
}

//------------------------------------------------------------------------------
// This method only considers points that are used by one or more cells. Thus