Inverse Kinematic (IK) for an arm (or leg) consisting of upper arm, middle arm, lower arm, and hand.

Inverse Kinematic (IK) for an arm (or leg) consisting of upper arm, lower arm, and hand.

The expression automatically calculates the rotation of all the arm segments such that the arm points to the desired goal point (which is represented by a null layer).

This expression links a pin from the puppet tool to a layer.

The pin automatically follows all the animation of the layer. The layer may also have parents.

With this iExpression you can connect a property to its own keyframes in an elastic way, as if the property would be connected to its keyframes by a rubber band.

With this iExpression you can connect a property to another one in an elastic way. This is like a linking expression, but the property followes the linked property not directly, but in a delayed, elastic way.