Transform any skeleton pose into t-pose

#1

Gathering information about the bone rotations I then thought if it’s possible to transform any skeleton pose into specific reference pose or t-pose.

say from this pose:

or this: https://i.pinimg.com/564x/0c/08/a7/0c08a7c8e80282e4090d46b4637c0afb.jpg

into this:

#2

are there any thoughts guys?

#3

simplest way would be to use the skinpose interface

-- run this on the control rig ONCE
for s in selection do s.setSkinPose() 

--set any tools etc to call
for s in selection do s.assumeSkinPose()

skin pose help