Datasheet

20  Chapter 1: Character Skeletons
Click Play to see the constraints working. Figure1.24 shows that the two skeleton
roots are nicely aligned.
To check your work so far, you can compare it to mocap_v02.ma on the DVD.
Let’s take a moment to review what you’ve just done. You point-constrained Jack’s root
node to the motion-capture root node. You only point-constrained the root node; none of
the other joints are directly constrained. en, you created an SC IK handle from Jack’s
root to his rst spine joint. You point-constrained the SC handle to the motion capture’s
second spine joint, upperback. Doing this locked the Y and Z rotation of Jack’s root
joint to the pitch and yaw of the motion-capture skeleton. Next, you applied an orient
constraint to the SC handle, eectively locking the X rotation to the twist of the motion-
capture skeleton. e formula is to point-constrain the SC handle to the top of the bone
and orient the handle to the root of the bone. Figure1.25 illustrates.
Figure1.24
The captured char-
acter squats down
with Jack’s root
node connected and
perfectly aligned.
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