I seem to remember a Sun demo program (JCanyon?) that showed how to handle extrememly large terrain maps using the NIO. It didn't come with Java3D, but was released/demonstrated at SIGGRAPH maybe? I think that would be a great place to get strategies for handling the large campus map.
Maybe someone at Sun would remind us where to find that program. -Todd Alex Terrazas wrote: >Hey- > >I never heard back from anyone regarding >collaborating on some of these imposter >methods. Anyway, I am prepared to go on >and I hope others will join me or at least >correct me when I am wrong. There is some >possibility of making small academic money >for helping with this. > >A little background. I am studying spatial >memory and scanning peoples brains while they >navigate in virtual environments. The subject >will sit in an MRI machine and navigate the >MSU environment. We will also be looking >at transfer of memory across reality and >VR. Finally, the subject will be able to >drive a video equiped robot around campus >while lying in the scanner. The subject >will wear special goggles but we also want >to have subjects navigate over the internet >on flat screens, in our Immersadesk using >shutter glasses, etc... > >The Java 3D view model is really working nicely >in this regard-thanks to a lot of help from >Mark Hood at Sun--see his replies to my >questions on the archives if you are interested. > > >Project Goals: > >Making an accurate virtual MSU allows me to >perform accurate comparisons within/between >subjects. I may want to distort the virtual >envioronment later but I want to start from >the most realistic that is practical. > >I am having students model different buildings >using 3DStudio MAX. We started with Beaumont >Tower. In the HMD, this thing is really nice. >It's one of the only truly immersive experiences >of my life. We are teaching a class on VR and >I am going to have this project as a part of that. > >So, where to go next. I am making some progress >on loading the terrain as a whole. We are beginning >in the park area around Beaumont and working >our way outward. But this is where it gets tough. >How do I load the next terrain element--and how >do I break up my terrain into elements. Some >sort of data structure is necessary, right? >Also, is it best to go through the LOD mechanim >to load up the terrain and neighborhood? How >should I organize my terrain model? Sure, >someone will say just dynamically load and cache >the geometry--but I am not sure how to implement >that. Maybe it is best to deform a surface >dyanimically according to the position of the >viewer. For example, the terrain model for MSU >is in a .dwg format which I believe is a vector >format. The model gives 1 ft elevations for the >entire 7000 acres campus (MSU is huge). Could I >write a custom Java NIO to read the format, skip >the appropriate elements and update the terrain >model? > >Anybody have suggestions? > >Alex > >=========================================================================== >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".
