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Create a layer for the hip and shoulder motion:

1 Select any part of the quadruped, go to the Motion

panel, and open the Layers rollout.

2 On the Layers rollout, click Create Layer. Name the new layer

Center of Mass & Spine.

3 Also on the Layers rollout, in the

Retargeting group, turn on the retargeting buttons for all four legs. Turn

on IK Only as well.

These controls preserve the IK constraints from the animation on the

base layer. Without them, moving the quadruped’s center of mass (COM)

would simply translate the entire quadruped, disregarding the sliding

keys you created earlier to control the feet.

4 Click Update.

If you select a foot, you can see that the sliding keys now appear in the

Track Bar for this layer.

1018 | Chapter 5 Character-Animation Tutorials