[vtkusers] surface expansion

[mbcx9rb9]

I've seen this asked a few times, but I haven't seen an answer for what seems
like a relatively simple task.

How do I go about expanding a surface by a given value (adding the value as
opposed to multiplying a scaling factor). 

Is there a class for this?

The logic seems pretty straightforward:
for each point
     new point = point + distance*normal
end for

Thanks in advance for any help,
Richard



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