I have a vtkBox with a transform set.
However, the transform never seems to be applied to the input points. Here is the code so you can see for yourself:
import vtk box_origin = [420, 69, 420.69] T = vtk.vtkTransform() T.Translate(box_origin) box = vtk.vtkBox() box.SetXMin([0,0,0]) box.SetXMax([1,1,1]) box.SetTransform(T.GetInverse()) # implicit function should now be translated to box_origin # input points should now be translated before evaluating the function pt = [420, 69, 420.69] # pt should be translated to origin, resulting in function value of 0 val = box.EvaluateFunction(pt) # val != 0 # val ends up being as if the transform was never applied to the points. # i.e. val = norm(pt - 1) != 0 print(val)