Behavior Class

Most of the work in typical Java 3D program is writing Behavior classes

A Behavior class changes the scenegraph in response to a stimulus

Possible stimuli:
  user(ie mouse, keyboard, exotic input device ...)
  collisions   time
  View location

Possible objects of change:
  TransformGroup
  Geometry
  Scenegraph
  View

Our example, MorphBehavior, wakes up immediately, then uses an alpha value (= number between 0 and 1) to change the weights in our Morph object

The alpha value we feed it comes from an Alpha class that changes it as function of time