A better approach replicating 'Curves in Curves'

@da.fosk wrote:

Hi all,

I’m attempting to create a sort of ‘Curve In Curve’ operation. My approach however is not particularly efficient as it relies on an Area calc and ‘Point In Curves’ method.

Curve In Curve.png1625x698 80.2 KB

The Problem: I have several thousand (200K+) closed polylines some of which contain smaller polylines but not all. The goal is to assign a unique colour to all polylines however, I wish for these ‘Internal courtyards’ (inner polylines) to be assigned the same colour as its parent building outline (outer polyline).

The solution I have works but its extremely heavy with so many thousand curves to process. Can anyone advise on a more effective solution.

image.png1542x506 78.1 KB

Much appreciated.

Curve In Curve Test.gh (17.5 KB)

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