Has anyone developed Java Classes/Methods to do native OpenGL calls?
Anyone know of some documentation on this?
Although I like Java 3D, it often seems a big pain to use. For example,
no Java 3D on the Macs, needs additional plugin installed and I never got
good
performance when I try to display 20 or 30 spheres, all moving, all
partially transparent,
and almost filling the entire screen, and menus seem to blink badly/slowly
when there
is any motion going on in the scene. So, I hate to say it, but I am
looking for
alternative ways to do the 3D programs I want to do. I'd love
to have something that is more "portable". That is, something that runs in
default Browser's JVM. (Java 1.1 or are the new browsers up to 1.2?) So I
thought of defining a
basic set of OpenGL calls from some Java methods. Granted, for each
platform,
the native code might be different. But once written, one library for one
of the platforms
I am interested in (Macs, Windows, Linux) I would think this would be a
small choir to change to the other platforms.
On the other hand, I know nothing about OpenGL.....
Anyone have any ideas on what to look into?
Would anyone no of good performance tutorial for Java 3D? (The performance
issues might be from my bad programming. So how do I learn about getting
not just
good but fantastic performance from Java 3D? This wont solve the platform
issue
with Java 3D, but it would certainly make *me* feel better about Java 3D if
I could
get my programs to perform nicely. Anyone want to help me through my
performance
problems? I could write some code, do some timing measurements (with
someone's help)
and then maybe we could go through the code and see what's wrong. I'd do
the example
mentioned about of 20 to 30 spheres moving, rotating, while the users
selects various menu
options.)
To see the performance problems I am having, you can try out a program I
wrote at
http://www.rwgrayprojects.com/Java3D/ndcp/ndcp.html
<http://www.rwgrayprojects.com/Java3D/ndcp/ndcp.html>
click on "Start the program."
Then, once started, type the "F6" button a few time to add some spheres. I
think you'll
see the performance problem. And the flickering problem.....
Any suggestions will be appreciated.
Bob Gray
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