Mail to list (was Re: [FIX] B3DRotationFix)
Joshua 'Schwa' Gargus
schwa at cc.gatech.edu
Thu Jun 20 05:22:27 UTC 2002
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.
> "!
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