@dgobbi thank you, this helped me to solve similar problem.
I’m interpolating custom object inherited from vtkDataSet and I’m wondering is it possible to somehow tell the interpolator that it should look for the points in some order?
My dataset has some partly predictable structure and I would like to experiment with perfomance (the dataset may take pretty much of memory).
Is it vtkPointLocator I should try to look at and probably inherit from it? Or vtkDataSet::GetPoint()/GetCell() are the only methods I should improve?