[vtkusers] How to find specific point's normal....?

[renlishen]

David, thanks again~
I try to use ComputePointId function but it doesn't exist in my VTK
(I'm use VTK 5.4.2)

I find another function can solve this question
int location[3] = {236,236,236};
vtkIdType id = mCubes->GetOutput()->FindPoint(location);

thanks your suggestion to help me to find right answer that I want~
thanks again ^^~

RenLi
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