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[kukanani]

Hi again.  I'm using OBJ, and i get this error:

Exception in thread "main" java.lang.NullPointerException
   at org.xith3d.scenegraph.GroupNode.addChild(GroupNode.java:141)
   at exodus.tests.XithTest.<init>(XithTest.java:65)
   at exodus.tests.XithTest.main(XithTest.java:76)

Here's the key part of my code:

Code:

        ExtXith3DEnvironment env = new ExtXith3DEnvironment(eyePosition,
        viewFocus, vecUp, this);
       
        BranchGroup bg = new BranchGroup();
        OBJModel model = null;
        try {
        model = new OBJLoader().loadModel( new URL("file:test.obj") );
        }
        catch(Exception e) {System.out.println("An Exception Occurred.");}
        bg.addChild(model);
        env.addBranchGraph(bg);

I get the same problem with MD2 loaders.  Any ideas?

[Marvin Fröhlich]

I get the same problem with MD2 loaders.  Any ideas?

Yes. The URL you're using is invalid. You should either use the loadModel(String filename) method or build the URL correctly by

Code:

new URL("file://test.obj")

Another way is to use the ResourceLocator class like this:

Code:

ResourceLocator rl = ResourceLocator.create( "./" );
model = new OBJLoader().loadModel( rl.getResource( "test.obj" ) );

Marvin

[kukanani]

Ahh, I got it.  That was my problem, but I also had another one - no MTL file.  The problem was that I was using a simple System.out.println() for errors, instead of using printStackTrace(), so I didn't know what the actual loader error was.

Thanks for the help.

[kukanani]

I'm currentlytrying to find a loader I like...I don't really care for OBJ and MTL. However, when I try DAE, I get this:

An Exception Occurred.org.xith3d.loaders.models.ParsingErrorException
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadGraph(DaeLoader.java:294)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadModel(DaeLoader.java:314)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadModel(DaeLoader.java:1)

   at org.xith3d.loaders.models.base.ModelLoader.loadModel(ModelLoader.java:474)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadModel(DaeLoader.java:328)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadModel(DaeLoader.java:338)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadModel(DaeLoader.java:1)
   at org.xith3d.loaders.models.base.ModelLoader.loadModel(ModelLoader.java:507)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadModel(DaeLoader.java:350)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadModel(DaeLoader.java:364)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadModel(DaeLoader.java:1)
   at org.xith3d.loaders.models.base.ModelLoader.loadModel(ModelLoader.java:534)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadModel(DaeLoader.java:383)
   at exodus.tests.XithTest.<init>(XithTest.java:67)
   at exodus.tests.XithTest.main(XithTest.java:82)
Caused by: java.lang.RuntimeException
   at org.xith3d.loaders.models.impl.dae.DaeImporter.convertVerticesType(DaeImporter.java:4307)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.convertMeshType(DaeImporter.java:2346)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.convertGeometryType(DaeImporter.java:1328)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.convertInstanceGeometryType(DaeImporter.java:1580)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.convertNodeType(DaeImporter.java:2501)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.convertVisualSceneType(DaeImporter.java:4346)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.convertInstanceWithExtra(DaeImporter.java:1892)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.convertColladaSceneType(DaeImporter.java:890)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.convertColladaType(DaeImporter.java:803)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.doImport(DaeImporter.java:215)
   at org.xith3d.loaders.models.impl.dae.DaeImporter.importColladaScene(DaeImporter.java:157)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.createScene(DaeLoader.java:497)
   at org.xith3d.loaders.models.impl.dae.DaeLoader.loadGraph(DaeLoader.java:290)
   ... 14 more
Exception in thread "main" java.lang.NullPointerException
   at org.xith3d.scenegraph.GroupNode.addChild(GroupNode.java:141)
   at exodus.tests.XithTest.<init>(XithTest.java:71)
   at exodus.tests.XithTest.main(XithTest.java:82)

[Marvin Fröhlich]

Well, unfortunately Croft hasn't left us any test case, nor a (definitely working) test model. I modified the DAE loader in some points, but I couldn't test it.

So if you could send me your DAE file, I could track the problem.

Marvin

['n ddrylliog]

@kukanani : look at this : http://www.xith.org/forum/index.php?topic=107.msg768#msg768
I made a document on OBJ-Blender3D-Xith3D.

Hope it's useful.

Amos

[kukanani]

OK, I'll do that.