[JAVA3D] RotPosPathInterpolator

[bh ahn]

hi   I have tried to display object using RotPosPathInterpolator, but I can't program interactive(eg. key interactive).   I have intended to coding program which is a keyinteractive.   For example, press 'A' key, then rotate and translate with RotPosPathInterpolator.   My program source code is below.   please. give a advice..   thanks   ----------------------------------------------------------------------------   public class ObjAni4 extends Applet {       private boolean spin = false;     private boolean noTriangulate = false;     private boolean noStripify = false;     private double creaseAngle = 60.0;     private String filename = "man.obj";   // KEY EVENT PROCESS ####################################          public class SimpleBehavior extends Behavior {           private TransformGroup targetTG;         private Transform3D rotation = new Transform3D();         private double angle = 0.0;         private WakeupCondition keyCriterion ;         // create SimpleBehavior         SimpleBehavior(TransformGroup targetTG){             this.targetTG = targetTG;         }                  public void initialize(){        WakeupCriterion[] keyEvents = new WakeupCriterion[3];          keyEvents[0] = new WakeupOnAWTEvent( KeyEvent.KEY_PRESSED );        keyEvents[1] = new WakeupOnAWTEvent( KeyEvent.KEY_RELEASED );        keyEvents[2] = new WakeupOnAWTEvent( KeyEvent.KEY_TYPED );        keyCriterion = new WakeupOr( keyEvents );        wakeupOn( keyCriterion );           }           // behave         // called by Java 3D when appropriate stimulus occures         public void processStimulus(Enumeration criteria){             // decode event                     WakeupCriterion wakeup;        AWTEvent[] event;          while( criteria.hasMoreElements() )        {        wakeup = (WakeupCriterion) criteria.nextElement();        if( !(wakeup instanceof WakeupOnAWTEvent) )        continue;          event = ((WakeupOnAWTEvent)wakeup).getAWTEvent();        for( int i = 0; i < event.length; i++ )        {        if( event[i].getID() == KeyEvent.KEY_PRESSED )        {        processKeyEvent((KeyEvent)event[i]);        }    } }                              wakeupOn( keyCriterion );     }       public void processKeyEvent(KeyEvent event)     {       int keycode = event.getKeyCode();                 if (keycode == KeyEvent.VK_A) {            System.out.println("A key press");                 <  I intend to insert RosPosPathInterpolator part here for key intercative, how can i do it? >       }       } } // end of key process     public BranchGroup createSceneGraph(String args[]) {        BranchGroup objRoot = new BranchGroup();           TransformGroup targetTG = new TransformGroup();         Alpha alpha = new Alpha(-1, 7000);         Transform3D rotation = new Transform3D();         float[] knots = {0.0f, 0.5f ,1.0f};         Quat4f[] quats = new Quat4f[3];         Point3f[] positions = new Point3f[3];                 Quat4f[] quats1 = new Quat4f[3];         Point3f[] positions1 = new Point3f[3];                 Quat4f[] quats2 = new Quat4f[3];         Point3f[] positions2 = new Point3f[3];                 Quat4f[] quats3 = new Quat4f[3];         Point3f[] positions3 = new Point3f[3];           // Create a Transformgroup to scale all objects so they         // appear in the scene.         TransformGroup objScale = new TransformGroup();         Transform3D t3d = new Transform3D();         t3d.setScale(0.7);         objScale.setTransform(t3d);         objRoot.addChild(objScale);    // Create the transform group node and initialize it to the  // identity.  Enable the TRANSFORM_WRITE capability so that  // our behavior code can modify it at runtime.  Add it to the  // root of the subgraph.          TransformGroup objTrans = new TransformGroup();          objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);          objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);          objScale.addChild(objTrans);            int flags = ObjectFile.RESIZE;          if (!noTriangulate) flags |= ObjectFile.TRIANGULATE;          if (!noStripify) flags |= ObjectFile.STRIPIFY;          ObjectFile f = new ObjectFile(flags,            (float)(creaseAngle * Math.PI / 180.0));          Scene s = null;              try {                    s = f.load(filename);              }              catch (FileNotFoundException e) {                System.err.println(e);                System.exit(1);              }              catch (ParsingErrorException e) {                System.err.println(e);                System.exit(1);              }              catch (IncorrectFormatException e) {                System.err.println(e);                System.exit(1);              }                  BranchGroup sGroup = s.getSceneGroup();              objTrans.addChild(sGroup);                  TransformGroup humanTG = new TransformGroup();              TransformGroup bodyTG = new TransformGroup();              TransformGroup headTG = new TransformGroup();              TransformGroup rarmTG = new TransformGroup();              TransformGroup larmTG = new TransformGroup();              TransformGroup lthighTG = new TransformGroup();              TransformGroup rthighTG = new TransformGroup();              TransformGroup lcalfTG = new TransformGroup();              TransformGroup rcalfTG = new TransformGroup();                Shape3D head = new Shape3D();              Shape3D body = new Shape3D();              Shape3D rarm = new Shape3D();              Shape3D larm = new Shape3D();              Shape3D rhand = new Shape3D();              Shape3D lhand = new Shape3D();              Shape3D rthigh = new Shape3D();              Shape3D lthigh = new Shape3D();              Shape3D rcalf = new Shape3D();              Shape3D lcalf = new Shape3D();              Shape3D rfoot = new Shape3D();              Shape3D lfoot = new Shape3D();                      if (s.getNamedObjects() != null)              {                   Hashtable objs = new Hashtable();                   objs = s.getNamedObjects();                      for (Enumeration e = objs.elements() ; e.hasMoreElements() ;) {              }                head = (Shape3D) objs.get("head");            body = (Shape3D) objs.get("body");            rarm = (Shape3D) objs.get("rarm");            larm = (Shape3D) objs.get("larm");            rhand = (Shape3D) objs.get("rhand");            lhand = (Shape3D) objs.get("lhand");            rthigh = (Shape3D) objs.get("rthigh");            lthigh = (Shape3D) objs.get("lthigh");            rcalf = (Shape3D) objs.get("rcalf");            lcalf = (Shape3D) objs.get("lcalf");            rfoot = (Shape3D) objs.get("rfoot");            lfoot = (Shape3D) objs.get("lfoot");               }    // remove from previous parent          int i = 0;           for (Enumeration e = sGroup.getAllChildren() ; e.hasMoreElements() ;) {              System.out.println(e.nextElement());    i++ ;         }         for ( int j=0; j<i; j++)       {      sGroup.removeChild(0);       }   // attach each part     objTrans.addChild(humanTG);      humanTG.addChild(bodyTG);   humanTG.addChild(headTG);   humanTG.addChild(rarmTG);   humanTG.addChild(larmTG);   humanTG.addChild(rthighTG);   humanTG.addChild(lthighTG);   humanTG.addChild(rcalfTG);   humanTG.addChild(lcalfTG);      bodyTG.addChild(body);     headTG.addChild(head);      rarmTG.addChild(rarm);   rarmTG.addChild(rhand);       larmTG.addChild(lhand);   larmTG.addChild(larm);       rthighTG.addChild(rthigh);   rcalfTG.addChild(rcalf);   rcalfTG.addChild(rfoot);      lthighTG.addChild(lthigh);   lcalfTG.addChild(lcalf);   lcalfTG.addChild(lfoot);      AxisAngle4f axis = new AxisAngle4f(0.0f, 0.0f,0.0f, 0.0f);   rotation.set(axis);      quats[0] = new Quat4f(0.0f, 0.0f, 0.0f, 1.0f);   quats[1] = new Quat4f(-0.25881904f, 0.0f, 0.0f, 0.9659258f);   quats[2] = new Quat4f(-0.4226182f, 0.0f, 0.0f, 0.90630776f);   positions[0] = new Point3f(0.0f, 0.0f, 0.0f);   positions[1] = new Point3f(0.0f, 0.08f, 0.17f);   positions[2] = new Point3f(0.0f, 0.16f, 0.33f);   quats1[0] = new Quat4f(0.0f, 0.0f, 0.0f, 1.0f);   quats1[1] = new Quat4f(0.25881904f, 0.0f, 0.0f, 0.9659258f);   quats1[2] = new Quat4f(0.4226182f, 0.0f, 0.0f, 0.90630776f);   positions1[0] = new Point3f(0.0f, 0.0f, 0.0f);   positions1[1] = new Point3f(0.0f, 0.08f, -0.17f);   positions1[2] = new Point3f(0.0f, 0.16f, -0.33f);   quats2[0] = new Quat4f(0.0f, 0.0f, 0.0f, 1.0f);   quats2[1] = new Quat4f(0.08715574f, 0.0f, 0.0f, 0.9961947f);   quats2[2] = new Quat4f(0.17364818f, 0.0f, 0.0f, 0.99848077f);   positions2[0] = new Point3f(0.0f, 0.0f, 0.0f);   positions2[1] = new Point3f(0.0f, 0.04f, 0.0f);   positions2[2] = new Point3f(0.0f, 0.08f, 0.0f);   quats3[0] = new Quat4f(0.0f, 0.0f, 0.0f, 1.0f);   quats3[1] = new Quat4f(0.25881904f, 0.0f, 0.0f, 0.9659258f);   quats3[2] = new Quat4f(0.4226182f, 0.0f, 0.0f, 0.90630776f);   positions3[0] = new Point3f(0.0f, 0.0f, 0.0f);   positions3[1] = new Point3f(0.0f, 0.0f, 0.1f);   positions3[2] = new Point3f(0.0f, 0.0f, 0.18f);            rarmTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);   larmTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);   rthighTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);   rcalfTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);      RotPosPathInterpolator rotPosPath = new RotPosPathInterpolator ( alpha, rarmTG, rotation, knots, quats, positions);   RotPosPathInterpolator rotPosPath1 = new RotPosPathInterpolator ( alpha, larmTG, rotation, knots, quats1, positions1);   RotPosPathInterpolator rotPosPath2 = new RotPosPathInterpolator ( alpha, rthighTG, rotation, knots, quats2, positions2);   RotPosPathInterpolator rotPosPath3 = new RotPosPathInterpolator ( alpha, rcalfTG, rotation, knots, quats3, positions3);         rotPosPath.setSchedulingBounds(new BoundingSphere());   rotPosPath1.setSchedulingBounds(new BoundingSphere());   rotPosPath2.setSchedulingBounds(new BoundingSphere());   rotPosPath3.setSchedulingBounds(new BoundingSphere());      SimpleBehavior myRotationBehaviorarm = new SimpleBehavior(rarmTG);   myRotationBehaviorarm.setSchedulingBounds(new BoundingSphere());   objRoot.addChild(myRotationBehaviorarm);     objRoot.addChild(rotPosPath);   objRoot.addChild(rotPosPath1);      objRoot.addChild(rotPosPath2);   objRoot.addChild(rotPosPath3);       BoundingSphere bounds =    new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);            if (spin) {    Transform3D yAxis = new Transform3D();    Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,        0, 0,        4000, 0, 0,        0, 0, 0);      RotationInterpolator rotator =        new RotationInterpolator(rotationAlpha, objTrans, yAxis,            0.0f, (float) Math.PI*2.0f);    rotator.setSchedulingBounds(bounds);    objTrans.addChild(rotator);  } else {    // Create the rotate behavior node    MouseRotate behavior = new MouseRotate();    behavior.setTransformGroup(objTrans);    objTrans.addChild(behavior);    behavior.setSchedulingBounds(bounds);      // Create the zoom behavior node    MouseZoom behavior2 = new MouseZoom();    behavior2.setTransformGroup(objTrans);    objTrans.addChild(behavior2);    behavior2.setSchedulingBounds(bounds);      // Create the translate behavior node    MouseTranslate behavior3 = new MouseTranslate();    behavior3.setTransformGroup(objTrans);    objTrans.addChild(behavior3);    behavior3.setSchedulingBounds(bounds);  }           // Set up the background         Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f);         Background bgNode = new Background(bgColor);         bgNode.setApplicationBounds(bounds);         objRoot.addChild(bgNode);           // Set up the ambient light         Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);         AmbientLight ambientLightNode = new AmbientLight(ambientColor);         ambientLightNode.setInfluencingBounds(bounds);         objRoot.addChild(ambientLightNode);           // Set up the directional lights         Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);         Vector3f light1Direction  = new Vector3f(4.0f, -7.0f, -12.0f);         Color3f light2Color = new Color3f(0.3f, 0.3f, 0.4f);         Vector3f light2Direction  = new Vector3f(-6.0f, -2.0f, -1.0f);           DirectionalLight light1             = new DirectionalLight(light1Color, light1Direction);         light1.setInfluencingBounds(bounds);         objRoot.addChild(light1);           DirectionalLight light2             = new DirectionalLight(light2Color, light2Direction);         light2.setInfluencingBounds(bounds);         objRoot.addChild(light2);    return objRoot;     }       private void usage()     {       System.out.println(  "Usage: java ObjLoad [-s] [-n] [-t] [-c degrees] <.obj file>");       System.out.println("  -s Spin (no user interaction)");       System.out.println("  -n No triangulation");       System.out.println("  -t No stripification");       System.out.println(  "  -c Set crease angle for normal generation (default is 60 without");       System.out.println(  "     smoothing group info, otherwise 180 within smoothing groups)");       System.exit(0);     } // End of usage       public ObjAni4(String args[]) {            for (int i = 0 ; i < args.length ; i++) {      if (args[i].startsWith("-")) {        if (args[i].equals("-s")) {   spin = true;        } else if (args[i].equals("-n")) {   noTriangulate = true;        } else if (args[i].equals("-t")) {   noStripify = true;        } else if (args[i].equals("-c")) {   if (i < args.length - 1) {     creaseAngle = (new Double(args[++i])).doubleValue();   } else usage();        } else {   System.err.println("Argument '" + args[i] + "' ignored.");        }      } else {        filename = "man.obj";      }     }    if (filename == null) {    usage();  }    setLayout(new BorderLayout());         GraphicsConfiguration config =            SimpleUniverse.getPreferredConfiguration();           Canvas3D c = new Canvas3D(config);          add("Center", c);    // Create a simple scene and attach it to the virtual universe  BranchGroup scene = createSceneGraph(args);  SimpleUniverse u = new SimpleUniverse(c);         // This will move the ViewPlatform back a bit so the         // objects in the scene can be viewed.         u.getViewingPlatform().setNominalViewingTransform();  u.addBranchGraph(scene);     }           //     // The following allows ObjLoad to be run as an application     // as well as an applet     //     public static void main(String[] args) {             new MainFrame(new ObjAni4(args), 600, 600);           } }   thanks ;)