2009

■ Set the transform managers to Parent coordinate system and Use Pivot
Point Center, while setting joint parameters. This helps you see the
orientation of the joint axes by displaying the parent axis icon at the
selected object’s pivot point.
■ When activating joint axes, drag the From spinner up and down. This
causes the object to move or rotate about the active axis and is a quick
check that you chose the right axis.
Activating Rotational Joints
1. Rotational links
When you turn on Active for one of the X, Y, Z axes of a rotational joint, the
object can rotate about that axis of its parent’s coordinate system.
Joints that rotate about multiple axes are very common. A ball joint, like your
shoulder, is a rotational joint active about all three axes. A pin joint, like your
elbow, is a rotational joint active on a single axis.
Inverse Kinematics (IK) | 3471