Brice,
> What I need it's to manipulate a lot the view origin
> (change the position, rotation, zoom, translation...).
> I would like to know if it's better to use the
> SimpleUniverse utility to build this 3D environment
> or if I should create all the entities by myself.
Well - my personal preference was to build things
myself. It definitely deepened my understanding of
how behaviors work. But if you are interested in
getting your project running quickly, you should
start with the utility classes covered in the Java3D
tutorial mentioned in an earlier message. If,
later, you want to write your own methods you can.
This might allow you to customize things to a
greater extent, or your version might perform
better than Sun's very general version. And, with
the understanding gained from working with Java3D
and the sun utility classes first, you will have
a much easier time of it than if you started by
roling your own from scratch.
So start with the Sun utility classes. They don't
lock you into anything, and they'll get you started
working in Java3D quickly.
If you want to see an example of Java3D without
the Sun utility classes you might check out one
of my experiments:
http://uts.cc.utexas.edu/~kluge/logo.java
It flys you around a stereo view of our logo.
(you have to back up a bit to bring it into view)
But it will work fine on a non stereo system.
The ViewPlatform's transformation group is
manipulated by the processStimulus method of
the ViewBehavior class. Using the Sun utility
classes lets you get going without getting
too bogged down in that sort of thing.
Alex Kluge
The Center for Instructional Technologies
The University of Texas at Austin
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