Posted by gouessej on Oct 21, 2015; 7:56am
URL: https://forum.jogamp.org/Issue-with-shading-the-cubic-tp4035539p4035540.html

Hi

Maybe there is a problem with the orientation of the normals for a few triangles. What is the expecting result?

Edit.: Your program is incomplete (where are the import clauses?), it's not a SSCCE and you use some classes that aren't part of the public Java3D API, maybe your own code is to blame.