I'd say it really depends on the topic. There is a number of general 3d
topics that could be used in Java3D. Although you will need a lot less of
these when dealing with Java3D, some of them will probably low level or more
to do with OpenGL or d3d, then they anything else.
And for me in particular I know a lot of programming languages, and so it
does not matter to me what language some one uses to demonstraight something.
If you know C/C++, then you could use those example to help do them in Java3D.
As a matter of a fact, a couple of days ago I posted something that will
create outlines for non-photorealistic rendering (NPR) type of rendering, and
I got the idea from someone else who coded it in C++ with OpenGL. I didnt
even actual have to look at his source code though, I simply had to load an
object that was open and see the wireframe to figure out what he did.
Sometimes these kinds of things dont require you to look at that.
You can also for example use information about quadratic or bicubic surfaces
and use that in Java3D. I believe I read something a few days ago someone
doing something like this.
Or another example, if an article explains how transparency blending works
and uses C++ with OpenGL, many of the same things can be applied to the
TransparencyAttributes in Java3D.
Anyway, 3d is a large topic itself, and as flexible as Java3D is, it can only
cover so much, so there will always be areas to which having this kind of
knowledge will come in handy, but when reading this stuff you have to try to
figure out if its possible to do it in Java3D on a case by case basis, if its
not possible or if its too low level you can probably suggest such a feature
to the Java3D team.
Leyland Needham
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