title: global transform to local transform?
body: <p>Related to this: <a href="https://stackoverflow.com/questions/11722391/apply-non-hierarchial-transforms-to-hierarchial-skeleton">apply non-hierarchial transforms to hierarchial skeleton?</a></p>
  
  <p>If an object is attached to another one and you need to set its position, rotation and scale in global space, what do you do to get the local versions of these values, knowing the same values for the "parent" object?</p>
  
  <p>(in the other thread I can do matrix.decompose() to get these values from a matrix)</p>