Re: Rotation from 4 points

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> How to extract one of these informations:
> 
> 1 - A quaternion representing the rotation

Hi there,

Just form the basis vectors and you have a matrix right away. Convert to 
quat. Done :)

I.e. Subtract your corner points from the 'central' point, and those are 
your basis vectors.

row 0 = D-A
row 1 = B-A
row 2 = C-A

Cheers, Paul.
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