2009

Results of animating the box and IK structure
Behavior of Objects in IK Mode
As you move and rotate objects using interactive IK you notice that some
objects might not be able to move or rotate about all axes. This is because the
objects are constrained by the joint parameters you have set. If the joint
parameters specify that motion cannot occur in a certain axis, the end of the
chain will not move.
Behavior of Root Objects in IK Mode
An option on the
Inverse Kinematics panel on page 7776 of the Preference
Settings dialog enables the special case of moving and rotating root objects
when IK mode is on. The name of this control is Always Transform Children
Of The World.
While you are transforming an end effector using IK mode, the settings for
the root object’s joint parameters are used and the root object does not move
with respect to the World. If you select the root object, its joint parameters
are released and you can transform the root object.
Inverse Kinematics (IK) | 3461