As David have said, it's either a lighting problem or, more probable, a geometry construction problem.
I've tryied to play with your profile. There are two pictures attached, first contains two objects, the profile rotated first around y axis and second around x axis. The second picture shows the first object viewed from the +y direction. For me it looks ok. Isn't that what you're getting ? Cheers, Florin -----Urspr�ngliche Nachricht----- Von: Smith, David [mailto:[EMAIL PROTECTED] Gesendet: Freitag, 30. Mai 2003 20:27 An: [EMAIL PROTECTED] Betreff: Re: [JAVA3D] problem with axis of revolution Do the faces line up with the original profile? Sounds like a problem in geometry/face creation. This depends greatly on the algo/techniques you are using. You might be creating facets with the wrong surface normals/orientation. Also will depend on the lighting in your scene. May appear flat even though it's not. Also will depend on units. What is 1? meter, mm, inch. 0.5 mm is pretty close to 1 mm. however 50mm is not so close to 100mm. Nice "wine glass" btw, ;-) -DaveS > -----Original Message----- > From: McCormick, Brian [mailto:[EMAIL PROTECTED] > Sent: Friday, May 30, 2003 1:51 PM > To: [EMAIL PROTECTED] > Subject: [JAVA3D] problem with axis of revolution > > > Hello all, > > Essentially, I'm creating a surface of revolution by > revolving a 2d profile > around the profile's vertical axis. The problem I'm running > into is this. > Let's say I define a sample profile as shown below: > > (0.0, 0.5), (0.8, 1), (1, 1), (0.2, 0.5), (0.2, 0.0) > > The object should look roughly like a wine glass and when > viewed from the > side, it does. However, when I move the view platform to > look at it from > overhead, it looks like the object has a flat and solid top instead of > inside faces. Loosely speaking, it looks like there is a lid > on top of it. > > I've tried messing around with the crease angle, lighting, > transparency, and > the number of increments around the vertical axis. Nothing > has helped so > far. Anyone got any other ideas on what could be wrong? Thanks. > > best, > Brian M. > > ============================================================== > ============= > 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". > ==========================================================================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".
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