Problem to "repaint" the 3D screen

Question

Hi everyone, I wrote an application that moves some geometrical objects when the user click on them, using Picking. The situation was supposed to happens like this: after the user clicks on an object i translate it to a distant position in order to hide it, so the place where the objects were stays empty, then i wait for some seconds and other configurations (i mean other positions) of the objects appear.
The problem is that the place does not stays empty it keep the old frame (i mean the old positions configuration) during all time i wait and just after that the frame show the new configuration. I guess it something related to Thread.sleep() the method i use to wait some seconds.
So my question is: Is there other strategy to do this such thing i intend? Maybe something like �Repaint�. Since now thanks a lot. I hope to have made myself to understand due my poor English writing.
�der.

Answer 1

messengers, i'm writing the Behavior class but i got a doubt, how can i get the action that wakeup the Thread.sleep in order to pass to wakeuponBehaviorPost class?
The code i found is like this:
  public class MyBehaviorTranslation extends Behavior{
      MyBehaviorTranslation(Group root, Bounds bounds) {
        this.setSchedulingBounds(bounds);
        BranchGroup branchGroup = new BranchGroup();
        branchGroup.addChild(this);
        root.addChild(branchGroup);
      public void initialize(){
          // set initial wakeup condition
          this.wakeupOn(new WakeupOnBehaviorPost(???, 0));
          // set someIntegerValue to your specific value
          // null can be replaced by an specific Behavior Object to send this value
      // called by Java 3D when appropriate stimulus occures
      public void processStimulus(Enumeration criteria){
        // do what is necessary
        // resetup Behavior
         this.wakeupOn(new WakeupOnBehaviorPost(????, 0));
  }Thanks a lot since now.
�der.