2009

of latitude and longitude are different. The parent transformation space that
this sphere is to be placed in is called the Swivel Angle Parent Space, or Parent
Space when the context is clear.
The parent space has to be invariant with regard to the IK parameters. Right
now, we provide two choices:
■ Start Joint The Swivel Angle Parent Space is the same as the parent space
of the Start Joint.
■ IK Goal The Swivel Angle Parent Space is the parent space of the IK Goal.
Example 1
If both the start joint and the goal are rooted directly at the world, the choice
of Parent Space does not give rise to any difference. In the following example,
the start joint is parented to object A.
The IK chain is parented (via the start joint) at
object A.
Inverse Kinematics (IK) | 3403