On Mon, 2004-02-23 at 18:37, bob wrote: > Hi, > > I am fairly new at j3d myself, but I think normal are defined per vertex and you > defined them per side of the cube. Also if you use the same normal for a vertex > shared by several polygons, you get the smooth gouraud shading effect (gouraud is on > by default), while when you use different normal for the same vertex for each > polygon you get a hard edges. I don't know how to enter the normals, for the time > being I use a function (in class GeometryInfo, if memory serves) that generates > normals automatically. You can give a maximal angle (between normals of polynoms) > for which shared normals will be generated. I think it takes the average of the > normals of each of the polygons that share the vertex. Normals and the function are > explained in one of the standard guides on sun.com (7 chapters, pretty clear)
I think I have the normals defined correctly...I based how I added them on the Box primitive (although they do some geometry caching that's different). Normals are discussed in chapter 6 of the Sun tutorial...if you saw my last mail, I think I have actually defined them correctly (because Box behaves the same way), but my lights or appearance isn't correct. thanks for the clarification, kddubb =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
