[JAVA3D] Mouse wheel behavior

[Rob Bosman]

Hi all,

I have a question: does class WakeupOnAWTEvent support event id 
java.awt.event.MouseEvent.MOUSE_WHEEL?

I created a simple MouseWheelBehavior class and added it both as a Behavior and as a 
EventListener, like this:

 MouseWheelBehavior mouseWheelBehavior = new MouseWheelBehavior();
 mouseWheelBehavior.setSchedulingBounds(
   new BoundingSphere( new Point3d(), 1000.0 ) );
 objRoot.addChild( mouseWheelBehavior );
 canvas3D.addMouseWheelListener( mouseWheelBehavior );

Here is the class definition:

 public class MouseWheelBehavior extends Behavior
   implements MouseWheelListener
 {
   private WakeupCriterion mouseWheelCriterion
     = new WakeupOnAWTEvent( MouseEvent.MOUSE_WHEEL );
   public void initialize()
   {
     wakeupOn( mouseWheelCriterion );
   }
   public void processStimulus( Enumeration criteria )
   {
     System.out.println( "MouseWheelBehavior.processStimulus()" );
     wakeupOn( mouseWheelCriterion );
   }
   public void mouseWheelMoved( MouseWheelEvent aMouseWheelEvent )
   {
     System.out.println( "MouseWheelBehavior.mouseWheelMoved()" );
   }
 }

My problem is that only the mouseWheelMoved() method is called on mouse wheel events, 
while I expected processStimulus() to be invoked too.
After changing MouseEvent.MOUSE_WHEEL into MouseEvent.MOUSE_MOVED the method 
processStimulus() is invoked correctly when moving the mouse over the Canvas3D.

I use JDK 1.4.1_02 and Java3D 1.3.1-beta (OpenGL) SDK.
Any clue?

Thanks,
Rob

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