[vtkusers] Inverse of vtkStructuredData::ComputeCellIdForExtent?

[David Doria]

There are functions to get a cell/point id from the structured grid location:

http://www.vtk.org/doc/nightly/html/classvtkStructuredData.html#a9bb9486010fa7aa394148bdc8b330cc8

vtkIdType vtkStructuredData::ComputeCellIdForExtent	(int extent[6],
int ijk[3] )

Are there inverse functions somewhere? Something like

void vtkStructuredData::ComputeStructuredIndexFromCellId(vtkIdType
cellId, int ijk[3] )

?

David