[SOLVED] Properly taper the ends of PolyExpand?

[bentraje 2]

Hi, 

Is there a way to properly taper a PolyExpand node?
I'm planning to have a pseudo procedural ornament and I need the ends to tapered.

I'm using the local attribute "offsetscale" to have variable width/offset but when I set it to zero, it just offsets unexpectedly.  

You can check the illustration of the problem here

spline.abc

taper_polyexpand.hipnc

taper_polyexpand_illustration.mp4

Edited March 25 by bentraje

[Librarian 627]

@bentraje Have Fun. In mine Collection I have This..I think I found those tricks in Asia Forums like Always .

 

Od_SplineMUSICKROVmodel.hiplc

[bentraje 2]

Thanks for the file @Librarian. That is some high level set-up right there.
Lucky Dee from the tech-artist slack group also provided a file on just a simple sweep rather than the poly expand.
 

taper_polyexpand_sweep.hipnc