matrixd. It was returning the values of the diagonal
of the matrix, which only returns the scale if there
is not a rotation. I fixed this by returning the
length of the vectors that form the basis.
I also added a function to orthonormalize the
rotation component of the matrix. I seem to always run
into situations where non uniform (or even uniform)
scale complicate my calculations, and I thought other
members of the community could use this function as
well."
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