[Java3D] Evidenziare superficie cliccata

[som]

Magari può essere utili a qualcuno.

Ho gestito nel metodo mousePressed chiamo un mio metodo che mi va a modificare l'Appearance della superficie cliccata:

public void aggiornaScena(int xpos, int ypos) {
        PickInfo pickResult = null; 
        Shape3D shape = null;
        PickCanvas pickCanvas = new PickCanvas(JFrame01.canvas3D, branchGroupGeometry); 
        pickCanvas.setMode(PickInfo.PICK_GEOMETRY);
        pickCanvas.setFlags(PickInfo.NODE|PickInfo.ALL_GEOM_INFO|PickInfo.LOCAL_TO_VWORLD);
        pickCanvas.setTolerance(0.0f);
        pickCanvas.setShapeLocation(xpos,ypos);
        
        pickResult = pickCanvas.pickClosest();
        
    if (pickResult != null) {
        shape = (Shape3D) pickResult.getNode();
            JFrame01.PianoInLavorazione = (Shape3D) pickResult.getNode();
        }
        if (shape != null) {
           Appearance appearance = new Appearance();
           appearance = shape.getAppearance();
           if(appearance!=null){
               if (appearance==appearanceOld){ 
                 shape.setAppearance(createPolygonAppearance());
               }
               else  {
                   System.out.println(shape.getAppearance()+ "  " + shape);
                   shape.setAppearance(appearanceOld);
               }
           }
        }
    } 

e nella creazione delle facce abilito la modifica dell'appearance:

 shape.setCapability(shape.ALLOW_APPEARANCE_WRITE);
shape.setCapability(shape.ALLOW_APPEARANCE_OVERRIDE_WRITE ); 

quindi problema risolto.