I tried to generate a mesh from code in Unity. The problem is, that the edges are automatically smoothed. When I import a model into Unity, I can set the smoothing angle of the edges, but is something like this possible with a generated mesh?
I would like to have no smoothing at all.
The normal for a vertex is generated by taking the mean of the normals for each face that contains that vertex.
As such if a mesh contains two (or more) triangles that share vertices they will be displayed with a smoothed edge.
If you use separate vertices (they can have identical positions) then they will be displayed with a hard edge.
There is some coverage of this topic on Morten Nobel's blog post on procedurally generating meshes over here.
