I'm a newbie myself, but if you go to Sun and do a search of the archive for
this mail list, you will find a link to a FAQ for quaternions. It has very
useful formulas for conversions ( in both directions ). The way I am using
these is a little roundabout: the viewpoint is moved from the center of a
square determined by sculptures in each corner to each sculpture. I found a
little program ( orient.exe, not sure where to get it ) that calculates the
VRML key values to use when starting from one point and rotating and moving
to another. The person I work under made a little program that then
converts these values to quaternions, and I just plug them in.
Hope that helps,
Dustin
-----Original Message-----
From: Discussion list for Java 3D API
[mailto:[EMAIL PROTECTED]]On Behalf Of Jennifer Evans
Sent: Wednesday, August 04, 1999 11:41 AM
To: [EMAIL PROTECTED]
Subject: [JAVA3D] RotPosPathInterpolator
Hi,
Bit of a newbie question, I don't have any prior knowledge of graphics, and
I'm trying to use a RotPosPathInterpolator, I am having problems
understanding the use of a Quat4f to specify orientation.
I have look at the Computer Graphics Principles and Practice book
recommended in a previous e-mail on this subject but still can't really
understand how I might calculate what numbers to put in my Quat4fs.
If anyone can think of a simple way to explain this or point me towards some
resource on the subject I would be very grateful.
Jenni.
P.S. goal is to get spheres rotating on an arbitrary axis
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