Check out GL4Java at http://www.jausoft.com/
They've mapped the complete OpenGL 1.2 and GLU APIs to Java.
Pedro Estrada
----- Original Message -----
From: "Bob Gray" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, July 06, 2000 9:41 AM
Subject: [JAVA3D] Java Calls to OpenGL, performance, platforms
> 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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