Quaternions and Some Questions

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Tom
 #1
Try this

QuatAngleDifference# = acos(q1\x*q2\x + q1\y*q2\y + q1\z*q2\z + q1\w*q2\w)

b.t.w, I don't think quaternions contain a regular vector, else why would quat.w have any bearing on the vector as it does in the above dotproduct code?