NurbsSurface By Control Points

I cannot manage to make the tool of the title work.

The knot vector remains a mystery to me.

Here is the definition:
forum_surface.dyn (13.7 KB)

@Askbid Hope this helps, though I don’t really understand it too well either…

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Thanks, your example made me understand (List.Cycle bit) that without flatten the points have the right list arrangement to make the easier NurbsSurface.byControlPoints work:

With that working I don’t think anyone needs the .ByControlPointsWeightKnots …luckily :sweat_smile: