How to find foldover numbers in mesh

[JihoKang24]

hello devs
i'm trying to find foldover regions number
how can I find this area? thank you for your helps

[Grantim]

Hello!

Could you please provide some examples of what area do you want to calculate?

We have such function, but I am not sure that it is the one you are looking for:
https://github.com/MeshInspector/MeshLib/blob/master/source/MRMesh/MROverlappingTris.h

[JihoKang24]

and also I want to clustering multiple intersect lines to seperate

[Grantim]

Could you please provide more details, it is not clear from the images what are you trying to achieve. If possible please attach your data (if don't want to share it publicly you can send it to our email: support@meshinspector.com)

[JihoKang24]

I want to know how to specify this area. Since there is a left face on the mesh, I found that it cannot be determined alone. So, I tried to solve it by determining the collision area, but is there another way?

thank you for your helps

[Grantim]

As I can see from the image, the area you are pointing is actually tunnel. So it has no area because it has no mesh as far as it is absence of material.

You can try to find nearby vertices with functions from this header https://github.com/MeshInspector/MeshLib/blob/master/source/MRMesh/MRMeshThickness.h

Or you can try to find tunnels with this https://github.com/MeshInspector/MeshLib/blob/master/source/MRMesh/MRTunnelDetector.h