public interface TangibleListener
The listener interface for receiving tangible events (Tangible added,
updated, and removed).
The class that is interested in processing a tangible event implements this
interface (and all the methods it contains).
The listener object created from that class is then registered with your
application by using TUIOFX's addMouseListener method. A Tangible event is
generated when a Tangible is added, updated (i.e. moved or rotated), and
removed. When a Tangible event occurs, the relevant method in the listener
object is invoked, and the information of the state and the Tangible is
passed to it.