Hello, I am working on a graph where the user can select two different sets of polylines and have dynamo extract the overlapping geometry. The graph will then insert a hatch/polyline into C3D for the overlapping geometry. The typical workflow for us where this graph would be applied is determining …

Here is a better version. I was running into issues the first time so I did a Overkill command but that set me back I think so I ran the script on your original dataset and almost got it but there were a couple of closed polys that Dynamo didn’t like so you kind of have to manually diagnose each nul…

Extract Geometry of Overlapping Polylines

Civil3D

mzjensen October 28, 2021, 3:27pm 2

Hi @hestingjj,

I haven’t looked closely at your setup, but here are a few thoughts. There was another similar post awhile ago, not sure if it helps or if you’ve looked at it already.

And then for this…

Have you tried the Geometry.IntersectAll node?

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Extract Geometry of Overlapping Polylines

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