Quaternions in Python
Andrew Dalke
dalke at dalkescientific.com
Sat Oct 6 02:30:54 EDT 2001
Paul Rubin:
>I think there's a simple way to represent quaternions as 3x3 matrices.
Thank you for giving me a chance to repeat one of my favorite
phrases from the movie "Apollo 13" -- "Gimbal lock". (Okay,
it isn't a widely popular quote, but I like it anyway!)
For an example of what that means and why 3x3 matricies don't
work, an "I'm feeling lucky" Google search for "Gimbal lock
quaternion" yields
http://www.anticz.com/eularqua.htm
and this link has more details,
http://www.gamasutra.com/features/19980703/quaternions_01.htm
Andrew
dalke at dalkescientific.com
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