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QTVR API



Hi:
I realize that this may be the wrong place to post this, but perhaps 
someone knows someone, or could point me in the right direction.
I am building a Widows app that is for a Museum.  The application is 
written in C++.  It uses QuickTime pans, and allows the guest to control 
the rotation of the pan with a track ball.  To make it easy for the user, I 
have disabled the normal QTVR cursor and mouse down control.  My software 
reads the raw motion from the track ball and sends it on to the pan.
I have the app working OK, but I am still not happy with the motion.
I am using QTVRNudge() to move the pan.  But this had led to a bunch of 
questions that are not answered in the documentation (or I can't find the 
answer).
1) What controls the amount of movement that a "nudge" produces?
2) Is QTVRInteractionNudge() a better approach, and what specific steps do 
I have to do to make it work?
Right now the pan is "jumping" from place to place.  It seems that 
QTVRInteractionNudge() allows for motion between the steps, but I can't 
seem to get it to take.

Any help or suggestions would be most appreciated.
Thanks,
John G. SInger
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