Hello everyone,
I think that a picture worth 1000 words, so this is my situation now:



And this is what I would like to obtain (picture taken from a 3d renderer coded from my university prof.):


As you can see every edge is lit and you can recognize it.. in the first picture even if I move the camera I can't recognize a vertex from another one.
Actually I use a default global light + a simple light positioned in the same place of my camera.
I hope you have understood me

Have a nice day,
A.