[vtkusers] vtkPolydataAlgorithm v/s vtkPolydataToPolydataFilter

[kshivann at engineering.uiowa.edu]

hi all,
     i am writing a filter which has both input and output as  
polydata. in VTK 5.0 all the filters have been derived from  
vtkPolydataAlgorithm. Should i derive my filter from  
vtkPolydataAlgorithm or should i use vtkPolydataToPolydataFilter which  
seems to have same characteristics as that of vtkPolydataAlgorithm.

kiran