Help Please I can't get my .wrl into a Geometry array

Question

Hello, I was hoping to get a quick fix for the problem I have with my code.
              Loader loader = new Loader(Loader.LOAD_ALL) ;
              // get the file names
              String[] srrFilenamen = null ;
              srrFilenamen = new String[]{ ("src/CarParts.WRL"), ("src/CarFlip.WRL"), ("src/CarShat.WRL")} ;
                // Several transform groops to put the objects where they should be
                TransformGroup objTrans[] = new TransformGroup[4] ;
                for (int i = 0 ; i < 4 ; i++)
                        objTrans[i] = new TransformGroup() ;
                        objScale.addChild(objTrans) ;
Transform3D tr = new Transform3D() ;
Transform3D rotX90 = new Transform3D() ;
rotX90.rotX(90.0 * Math.PI / 180.0) ;
objTrans[0].getTransform(tr) ;
tr.setTranslation(new Vector3d( -2.0, 1.5, -2.0)) ;
tr.mul(rotX90) ;
objTrans[0].setTransform(tr) ;
objTrans[1].getTransform(tr) ;
tr.setTranslation(new Vector3d(0.0, 1.5, -2.0)) ;
tr.mul(rotX90) ;
objTrans[1].setTransform(tr) ;
objTrans[2].getTransform(tr) ;
tr.setTranslation(new Vector3d(2.0, 1.5, -2.0)) ;
tr.mul(rotX90) ;
objTrans[2].setTransform(tr) ;
objTrans[3].getTransform(tr) ;
tr.setTranslation(new Vector3d(0.0, -2.0, -2.0)) ;
tr.mul(rotX90) ;
objTrans[3].setTransform(tr) ;
// Now load the object files
Scene srrMorpScene[] = new Scene[3] ;
GeometryArray g[] = new GeometryArray[3] ;
Shape3D shape[] = new Shape3D[3] ;
for (int i = 0 ; i < 3 ; i++)
srrMorpScene[i] = null ;
g[i] = null ;
shape[i] = null ;
for (int i = 0 ; i < 3 ; i++)
srrMorpScene[i] = loader.load(srrFilenamen[i]) ;
Group b = srrMorpScene[i].getSceneGroup() ;
objTrans[i].addChild(b) ;
// error
shape[i] = (Shape3D) objTrans[i].getChild(0); // this is where the problem lies
// the rest should be ok
g[i] = (GeometryArray) shape[i].getGeometry() ;
shape[i].setGeometry(g[i]) ;
Some of you might recognise this from the well used hand morph demo, however that demo works with .obj files.
.obj files are not loaded in the same way as .wrl files, there for I've had to change the loader a little, however they still load into scene.
But the error produced is:
java.lang.ClassCastException
     at SCU.<init>(SCU.java:207)
     at WMP_Quicktime.<init>(WMP_Quicktime.java:67)
     at WMP_Quicktime.main(WMP_Quicktime.java:33)
" A 'ClassCastException' means that I'm trying to type cast something as something it isn't.
I've been looking in the web, and on this site my findings have made me change           
            BranchGroup b = s.getSceneGroup();
     shape[i] = (Shape3D) b.getChild(0);
into:
            TransformGroup objTrans.addChild(b) ;
shape[i] = (Shape3D) objTrans[i].getChild(0);
Because someone on this site used it that that way(from a transformgroup) and had no problems converting to Shape3D apperantly.
Also I've tried
            Group b = s.getSceneGroup();
     shape[i] = (Shape3D) b.getChild(0);
Because I usually load a sene into a Group, not a branchgroup.
And I've tried.
            BranchGroup b = s.getSceneGroup();
     shape[i] = (Shape3D) b.cloneTree();
Because The input should and could only be a node, right?
In all cases
java.lang.ClassCastException
     at SCU.<init>(SCU.java:207)
     at WMP_Quicktime.<init>(WMP_Quicktime.java:67)
     at WMP_Quicktime.main(WMP_Quicktime.java:33)
"my .wrl files are a little on the larger side, as they are a car(in 3 states of destruction) and have quite a few triangles.
I'm using JDK 1.3 on Jbuilder 2005, this because as my laptop is broken thus I am forced to use the somewhat outdated software(not alowed to install programs).
I hope I've supplied enough information to get help.
Other wise could somone inform me of a alternate way to use the J3D morph function, or a function with similar effect.
(not making a each step a file and showing them 1 after another, that would take to much loading and memory time, I'm already strangeling the CPU at 89%)
Thank you in davance for your help.
Aditionally here is the original code with the .obj files.
  private java.net.URL[] objFiles = null;
     // Create the transform group nodes for the 3 original objects
     // and the morphed object.  Add them to the root of the
     // branch graph.
     TransformGroup objTrans[] = new TransformGroup[4];
     for(int i=0; i<4; i++) {
         objTrans[i] = new TransformGroup();
         objScale.addChild(objTrans);
     Transform3D tr = new Transform3D();
     Transform3D rotX90 = new Transform3D();
     rotX90.rotX(90.0 * Math.PI / 180.0);
     objTrans[0].getTransform(tr);
     tr.setTranslation(new Vector3d(-2.0, 1.5, -2.0));
     tr.mul(rotX90);
     objTrans[0].setTransform(tr);
     objTrans[1].getTransform(tr);
     tr.setTranslation(new Vector3d(0.0, 1.5, -2.0));
     tr.mul(rotX90);
     objTrans[1].setTransform(tr);
     objTrans[2].getTransform(tr);
     tr.setTranslation(new Vector3d(2.0, 1.5, -2.0));
     tr.mul(rotX90);
     objTrans[2].setTransform(tr);
     objTrans[3].getTransform(tr);
     tr.setTranslation(new Vector3d(0.0, -2.0, -2.0));
     tr.mul(rotX90);
     objTrans[3].setTransform(tr);
     // Now load the object files
     Scene s[] = new Scene[3];
     GeometryArray g[] = new GeometryArray[3];
     Shape3D shape[] = new Shape3D[3];
     ObjectFile loader = new ObjectFile(ObjectFile.RESIZE);
     for(int i=0; i<3; i++) {
     s[i] = null;
     g[i] = null;
     shape[i] = null;
     for(int i=0; i<3;i++) {
     try {
          s[i] = loader.load(objFiles[i]);
     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 b = s[i].getSceneGroup();
     shape[i] = (Shape3D) b.cloneTree();
     g[i] = (GeometryArray) shape[i].getGeometry();
     shape[i].setGeometry(g[i]);
     objTrans[i].addChild(b);
public void init() {
if (objFiles == null) {
     objFiles = new java.net.URL[3];
     // the path to the image for an applet
     String path = getCodeBase().toString();
     try {
     objFiles[0] = new java.net.URL(path + "hand1.obj");
          objFiles[1] = new java.net.URL(path + "hand2.obj");
          objFiles[2] = new java.net.URL(path + "hand3.obj");
     catch (java.net.MalformedURLException ex) {
     System.out.println(ex.getMessage());
          System.exit(1);
Message was edited by:
System_Crush
[EDIT] made the error mesages a little more eye catching
null

Answer 1

I'd suggest installing any available updates for your computer. To ensure the drivers are up to date.