[vtkusers] trouble with vtkPoints

[jon n]

hi. I have a vtkPoints object along with a vtkCellArray and vtkPolyData 
representing a line in 3space made up of 2 vertices. but when I use 
SetPoint() on the vtkPoints object to change the vertices, the line doesn't 
change. Even if I re-tell the vtkPolyData where its getting the points from. 
So what i'm doing for now is creating a new temporary vtkPoints object each 
time the line changes and assigning that to the PolyData, but that tends to 
go quite slow. How can I get just using SetPoint() to work?


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