scale retrieval

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From: Mark Evans (mrrevans++at++yahoo.com)
Date: 03/09/2001 03:19:03

Is it possible to retrieve the rotation, translation
and scale for a pfDCS ( or pfSCS) separately? You can
set separately the translation, rotation and scale for
a pfDCS (through pfDCSTrans, pfDCSRot, pfDCSScale,
pfDCSScaleXYZ), but you can only retrieve the matrix
of a pfDCS (pfGetDCSMat). Is it possible to retrieve,
from this matrix, the translation, rotation and scale?
I've tried to use pfGetOrthoMatCoord, but it would
only get me the translation and rotation, not the
scale.
Is there a unique solution, or could different
rotations+scales to give the same result?
Also, if I want to "animate" a pfDCS from pfMatrix m1
to pfMatrix m2 through linear interpolation, is it
correct to linearly interpolate each of the 16
coefficients of the matrix for the pfDCS between the
source and destination matrices? Is there a better (or
correct) way?

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