I have an object with a defined up (say the y-direction) and a defined
forward (say the x-direction).  I'd like to place this object at a new
location with a new orientation specified by given new up and forward
vectors.  Both vectors are unit vectors and they at perpendicular to each
other.  The translate part is easy but the rotations I need to apply to my
object are giving me trouble.  I'm sure I'm making things more complicated
then necessary.  Can someone help?

Thanks,
Carl

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