How to get curves at the intersection of primitives?

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Hello!

I am using Labs Lot Subdivision to create simulated urban areas. The original curve was drawn by hand.

Screenshot 1 - Curve after Lot Subdivision

Screenshot 2 - Object structure after Lot Subdivision

Screenshot 3 - the desired result obtained by manually deleting points

The question is, how to get a similar result procedurally with an arbitrary input curve?

I've tried boolean (seams) and intersection stitch, but both results cannot be used.
Source file:

Attachments:
Screenshot_1.png (287.6 KB)
Screenshot_2.png (290.3 KB)
Screenshot_3.png (364.4 KB)
reassemblyCurve01.hip (168.2 KB)

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Im sure you probably have already solved this, but you can just use a polywire on the original edge and use that to group the boundry points of the lot subdivision. You can then group promote the boundry point group to a edge group and simply disolve the boundary group, this should leave you with the inside curves.
Edited by willh - Dec. 4, 2020 15:05:33

Attachments:
reassemblyCurve01_solve.hiplc (168.7 KB)

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