2009

reference between the selected's limb relative orientation and the rollout's
Twist value of 0 (which means no twist). When more than one reference pose
are set for a rotated limb, the limb's twisting is calculated based on the nearest
pose.
TIP It is suggested that you add twist poses for all major limb rotated poses. This
ensures that rotating your biped's limb produces well-calibrated twisting.
NOTE You don't technically have to enable twist links on page 4430 to use the Twist
Poses rollout toolset. However, if your biped does not contain twist links, the Twist
and Bias settings are not used.
The Twist Poses rollout tools only affect limbs with three degrees of freedom
(DOF), such as upper arms and thighs, because you can control their twist
links by rotating them. Two-DOF limbs (forearms and calves, for instance)
differ due to the fact that you can only control their twist links if you rotate
their child limb.
The upper arm can twist itself while the forearm needs the wrist to twist it.
NOTE If you select a two-DOF limb, the only available setting is the Bias value;
you can change it to adjust the rotation distribution along the twist links.
4358 | Chapter 17 character studio