On Tue, 21 May 2002, Daniel Selman wrote: > Noah, > > Lots of info! Some questions for you. > > 1. What is your front and back clip distance set to? How big are your maps?
FrontClipping distance: 5000.0 meters BackClipping distance: (default for SimpleUniverse) 0.1 meters The maps used in the images is: 4200m x 2000m (Max Elev. is 200m) > 2. Have you updated you video driver? I believe I have the most up to date driver for my development hardware. Additionally I've tried on multiple machines, one with ATI hardware (a laptop), another with a GeForce4. The results are the same. I've even tried using different version of Java3D. > 3. Why apply a TextureAttributes to the Map, when it is not transparent? I apply TransparencyAttributes to the Map (even when its not transparent) because I can't seem to get the MapOverlay to show up at all without doing so. Both objects seem to require have a TransparencyAttribute Object in order for the MapOverlay to show up. Perhaps this is a clue? > The fact that the MapOverlap is not rendered looks like a depth sorting > issue, which would possibly point to a depth buffer precision problem. Have > you experimented with varying the Z-offset or using a PolygonAttributes > offset? I have put the MapOverlay and the Map in an ordered group. Using the settings discussed in the previous e-mail, there appeared to be no change regardless of render order. I haven't player with the Z-offset using the PolygonAttributes yet. I play with both of these things more and get back to you. > How about an OrderedGroup? Do you know that you cannot render > overlayed transparent objects with any certainty without using the > transparency depth sorting feature (1.3)? > I am unable to see either the Map or the MapOverlay in Java 1.3 by default. I haven't looked into this further yet. > 4. Have you tried this on other machines / video cards / OSes? > I haven't tried different OS's but I have tried different Machines, and different Video Cards, and different version of Java 1.2.1 including the _03 and _04 versions for both OpenGL and DirectX. > Sincerely, > > Daniel Selman > > Author - "Java 3D Programming" > http://www.manning.com/selman > Noah Ternullo =========================================================================== 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".
