Canvas3D JPanel and Behavior

Question

Hello,
I am a student’s geomatic and I do my memory on 3D object implementation in a data base.
To do that, I have a 3D graphic interface. I use Java 3D and Swing.
Now, my program load only 3D points. There are 3 parts:
- a 3D viewer,
- a table,
- buttons for the actions.
I would like to get the 3D mouse coordinates in my 3D world.
I succeed in a first program’s version. There were two windows JFrame, one included the Canevas3D and the other the table with the buttons.
For the mouse’s action, I modify this source code :
http://deven3d.free.fr/telechargements/fichiers/java3d/chap07/SimpleBehavior/SimpleBehavior.java
Then, I put the Canevas3D in a JPanel (and neither in a separate window). And I add this JPanel to the JFram (those contain the table and the buttons for the actions).
And after that my class Behavior don’t work.
I think it’s due to my ActionListener (it’s use to catch the buttons’ press) who intercept the mouse action.
This is my class Behavior :
import java.awt.AWTEvent;
import java.awt.Point;
import java.awt.event.*;
import java.util.Enumeration;
import javax.media.j3d.*;
import javax.vecmath.Point3d;
public class InterGraph3d extends Behavior {
       // Condition qui va declencher le stimulus
       private WakeupCondition wakeupCondition =
            new WakeupOnAWTEvent(MouseEvent.MOUSE_PRESSED);
       private Canvas3D caneva;
       InterGraph3d (Canvas3D cane){
               this.caneva = cane;
     public void initialize() {
         this.wakeupOn(wakeupCondition);
     public void processStimulus(Enumeration criteria) {
          WakeupCriterion critere;
         AWTEvent[] events;
         MouseEvent evt;
         // On boucle sur les critères ayant declenche le comportement
         while (criteria.hasMoreElements()) {
           // On recupere le premier critere de l'enumeration
           critere = (WakeupCriterion)criteria.nextElement();
           // On ne traite que les criteres correspondant a un evenement AWT
           if (critere instanceof WakeupOnAWTEvent) {
             // On récupère le tableau des evements AWT correspondant au critere
             events = ((WakeupOnAWTEvent)critere).getAWTEvent();
             if (events.length > 0) {
               // On récupère l'événement
               evt = (MouseEvent)events[events.length-1];
               // Traitement au cas par cas selon la touche pressée
               switch(evt.getButton()) {
               // Obtenir les coordonnées 3D du point cliqué
                 case MouseEvent.BUTTON1: // clic gauche
                 // pour avoir les coordonnées du point cliqué dans l'univers en 3D
                 // on déclare un point 3D
                 Point3d ptSourie = new Point3d();
                 // on utilise la fonction pour avoir les coordonnées de la sourie en 3D.
                 ptSourie = obtenirPointSourieCaneva(caneva, evt.getPoint());
                 // ici faire une liaison avec l'interface graphique
                 System.out.println("Coor sourie");
                   System.out.println(ptSourie.x);
                   System.out.println(ptSourie.y);
                   System.out.println(ptSourie.z);
                   break;
          // Une fois le stimulus traite, on réinitialise le comportement
         this.wakeupOn(wakeupCondition);
     // fonction pour récupérer les coordonnées de la sourie dans le
     public Point3d obtenirPointSourieCaneva(Canvas3D myCanvas, Point clickPos)
          Point3d mousePos = new Point3d();
          //pixel value in image-plate coordinates and copies that value into the object provided.
         myCanvas.getPixelLocationInImagePlate(clickPos.x, clickPos.y, mousePos);
          //This block of code converts our image plate coordinates out to virtual world coordinates
          Transform3D motion = new Transform3D();
          myCanvas.getImagePlateToVworld(motion);
          //We do this convertion the mouse position.
          motion.transform(mousePos);
          return mousePos;
}

Answer 1

The ScrollDemo uses the column and row header as well as the corner to create the rulerIt adds a component to the colum and row header and the corner. That component may or may not be a JPanel, or JComponent which they have used for custom painting.
Can I change the ScrollDemo to use a JPanel instead?Makes no sense. There are 9 areas to add a Component. Any of those 9 areas can hold a JPanel.
Does a JPanel provide the same elements A panel uses a LayoutManager to place components. Check the scroll pane source code to see what LayoutManager it uses.