Re: [Algorithms] Zeroing a quaternion rotation axis

[George W. <ge...@ap...>]

On Sat, 17 Apr 2004 12:47:15 -0400, "Jonathan Blow" <jo...@nu...>
wrote:

>> This isn't a particularly useful answer - he may well have a perfectly valid
>> reason for doing what he's doing.  Maybe he's attempting to limit the
>> degrees of freedom of a ball joint in a physics engine?

Another perfectly valid reason might be for a camera that can change heading
and pitch but we don't want it to roll.

-- 
Enjoy,
George Warner,
Schizophrenic Optimization Scientists
Apple Developer Technical Support (DTS)