[vtkusers] question about vtkSpline class

[medo abdelmonem]

Plz anybody know what this method exactly do....i mean what is left constraint and what are modes of setting for it....i know this is mentioned in documentation....but i need further explaination cause i really can't get the idea from the breif documentation
   
        vtkSpline::SetLeftConstraint   (   int      )     
   
   
  Thanks
  Mohamed

 
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