When animating rigid props, like a box for example, there is a strong need for something like a dynamic pivot. If the box needs to roll end-over-end, or down a flight of stairs, having the pivot in the center of the box, makes animation difficult.
Placing a pivot at the edge or corner of the box helps keep contact with the ground or the other elements in the scene. But what if you wanted to keep animating the box end-over-end? This is where something like having dynamic pivots comes in.
A dynamic pivot will allow the animator to choose where the center of rotation for the object will be. A dynamic pivot can be moved while animation is taking place. Here, Jan Matt hows how you can rig a simple box, the smart way. Jan offers an overview of classic rigging controls, pivots and dynamic pivots, and incorporates a Python script for snapping the object to its pivot.