Cleaning up self intersecting polygons


I use Rhino’s check meshes and I use the cleanup tools quite alot. I The one thing I would dearly love to clean up, but I can’t find the command for is intersecting polys and tris. These happen a lot in the scans I’m working with.

(Brian James) #2

Do you have a simple example file?


They’re really big.

(Brian James) #4

Can you make one smaller by exploding and deleting polys or trimming? If we can see the exact ‘intersecting’ polygons, I might be able to offer an approach to cleaning it up now or can file a feature request.


This is a really bad mesh, but it’s the only thing I could find on my laptop that had the intersecting polys. I’ve included the check object summary in the zip. I can clean up almost everything mentioned either in Rhino or another program except the intersecting polys. I love your cleanup. I hope this get to you. I couldn’t figure out how to do an attachment in the forum.

kking problem (5.68 MB)

(Pascal Golay) #6

Yep, this comes up pretty regularly, actually and there is no good way to locate these yet, or fix them, even though we tell you about them.



That’s interesting. I thought I was sending this to BrianJ. HE’s the one who reqquested the file.

(Brian James) #8

I got it too but Pascal beat me to the punch… and I agree there isn’t a great way to deal with this in Rhino’s MeshRepair. I liked your site though and see that you have dabbled in ZBrush too for the bird sculpture. You might look at using a dynamesh there possibly after running the reducemesh and quadrangulate commands in Rhino.


Unfortunately Zbrush is really good at making intersecting polys. I usually double check zb objects in rhino. That’s how I got to know the repair mesh stuff. We’ll see if that changes this weekend.

Thanks for looking at my site. Wait til I get the photoscans up.

I hope you can come up with a way to correct intersecting polys sometime.