> Here's some crude and simple code to explain the basic idea. The
> algorithm is simpler than I remembered. Just use the VPerp_Adjust()
> macro to make the last up-vector perpendicular to the current
> forward-vector and then use that as the current up-vector... The code
> here just aligns boxes and does not create a tunnel out of a mesh, but
> the basic idea is the same.

Hm. I can see that it works, but I don't understand why and how. I can't
visualize what that VPerp_Adjust actually does, and why it works for
generating a proper new matrix for the new box. Care to elaborate and
enlighten me? :-)

Regards,
Tim

-- 
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de

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