Start recording a journal, start the studio spline command, change the option to through points, pick enough points to complete a spline, OK the dialog, stop recording the journal, and examine the resulting journal code. In this case, NX will use a StudioSplineBuild...
So the one and only spline is the input. And the output should be a polyline consisting of small linear lines of a defined length (e.g. 0.1 mm) which follow the shape of that spline. Is this what you related to? Because I get a bit confused when you propose to use the points of...
// and those smart points cannot be used as input for any current features like Line, Spline, etc. (see PR-6736402) // If we delete the SO parent data from the points, it won't be associative any more: // theUFSession.So.DeleteParms(tPoin...