[JAVA3D] how to make a target function!

[alvaro zabala]

Hi everybody! I'm very interested in Java3d picking behaviors.   I want to move to a terrain point where a make a pick, but I pass through the terrain, like a liquid terrain. How can I resolve this?   I'm trying to do it with this code;    public void processStimulus(Enumeration e){       /*The behavior is activated with mouse clicks       WakeupCriterion mC = (WakeupCriterion)e.nextElement();     AWTEvent[] Eventos = ((WakeupOnAWTEvent)mC).getAWTEvent();     MouseEvent mE = (MouseEvent)Eventos[0];           PickCanvas pC = new PickCanvas(canvas3d,transformGroup);     pC.setMode(pC.GEOMETRY_INTERSECT_INFO);     pC.setTolerance(5f);     pC.setShapeLocation(mE);       PickResult resultado = pC.pickClosest();     if (resultado!=null){           System.out.println("Sucess!!");            PickIntersection pI = resultado.getIntersection(0);           Point3d [] array = pI.getPrimitiveCoordinates();            Transform3D trans = new Transform3D();           miPrincipal.rotatorTG.getTransform(trans);          miPrincipal.target = new Point3d(-array[0].x,-array[0].y,-array[0].z);// I go to the first point of the TriangleStripArray`s triangle where I made pick.   }else{       System.out.println("Failure!!");     } }   Target is a point3d (global property) of the main class. I use a listener where I run the next code:     JButton target = new JButton("target");       target.addActionListener(new ActionListener(){         public void actionPerformed(ActionEvent e){         miPrincipal is the main class         if (miPrincipal.target==null) System.out.println("There isn�t any target");         Transform3D t2 = new Transform3D();         double x = miPrincipal.target.x;         double y = miPrincipal.target.y;         double z = miPrincipal.target.z;           Matrix3f matriz = new Matrix3f();         Vector3d vector = new Vector3d();         rotatorTG is the main transformgroup         miPrincipal.rotatorTG.getTransform(t2);         t2.get(matriz,vector);           double x0 = vector.x;         double y0 = vector.y;         double z0 = vector.z;         System.out.println(x0+" "+y0+" "+z0);           for (double i=0.0d;i<1.00d;i+=0.01d){           This is the parametric line equation            x0 = x0 + (i*(x-x0));           y0 = y0 + (i*(y-y0));           z0 = z0 + (i*(z-z0));           System.out.println(i);           t2.setTranslation(new Vector3d(x0,y0,z0));           miPrincipal.rotatorTG.setTransform(t2);           try{             Thread.sleep(110);           }catch(Exception exc){             System.out.println("Error con el thread");             exc.printStackTrace();           }         }       }       });