2009

Sliding and Rotational Joints Rollouts (HD Solver)
Make a selection. > Hierarchy panel > IK > Sliding and Rotational Joints rollouts
In inverse kinematics, joints operate by allowing motion on one or more axes
and restricting motion on the remaining axes. You set whether an object can
move (slide) on or rotate about a given axis with the Active check box in the
joint rollouts. Joints have a maximum of six possible axes: three for position
and three for rotation. You constrain the motion of a joint by setting which
axes are active.
The setting of IK joint axes overrides any Inherit and Lock settings in
Link
Info
on page 3500.
Procedures
To activate or deactivate an axis:
1 Select an object.
2 On the Hierarchy panel, click IK.
3 Expand the rollout for a joint type.
4 Turn on Active for any available axis.
■ When on, the axis is active and the object can move or rotate about
that axis.
■ When off, the axis is inactive and the object cannot move or rotate
about that axis.
To limit a joint:
1 Select an object.
2 Click IK in the Hierarchy panel.
3 Turn on Limited for any active axis. If an axis is inactive the limits settings
are ignored.
■ When on, the axis is limited and the object can move or rotate within
the range set by the From and To fields.
■ When off, the axis is not limited and the object moves or rotates freely
about that axis. If you turn on Limited, specify limit values in the
From and To fields. When setting limits, the object transforms to the
position or rotation defined by the From or To field. When you exit
Hierarchy Panel Commands | 3495