Find an edge shared by two specific triangles


How could I flag visible or not an edge shared by two specific triangles?

Does it depends on the structure of my objects…

I have a simple structure: object[3][x]

Many thanks

autoedgeing… there is something about into foley/van dam computer graphics PnP.

basically you have to make a edge list, each node should have references to the faces it uses.
make a cycle and check the dot product between the two normals of the faces: if it is > than a threshold value, make it visible or invisible.


Thanks for the answer…

How do I do an edge list?

Many thanks