I tried to add something else above the preamble, but either Celeste
screwed up or I did.

What didn't show up was a request for the critical eyes of anyone on
the list who understands quaternions.

G'Night,
Joshua


On Thu, Jun 20, 2002 at 01:18:28AM -0400, schwa at cc.gatech.edu wrote:
> from preamble:
> 
> "Change Set:		B3DRotationFix
> Date:			20 June 2002
> Author:			Joshua Gargus
> 
> Before this fix, the following erroneous behavior was observed:
> 
> (B3DRotation from: 0 at 0@1 to: 0 at 1@0) angle => 0.0
> (B3DRotation from: 0 at 0@1 to: (0 at 1@1) normalized) angle => 180.0
> 
> This changeset fixes the problem, also addressing the special cases of
> rotating between parallel vectors with both the same and opposite
> orientations.
> "!