Strange problem when using BondingVolume

Troubleshooting General Help
1

I get a strange problem when using BondingVolume.



When adding a bonding volume with this code:


ThredSaftyManeger.beginEditing();
Box ne =new Box("newBox",new Vector3f(0,0,0),1,1,1);   
ne.setWorldBound(new BoundingSphere());
ne.updateWorldBound();
((Node)top).attachChild(ne);



I get this exception:


java.lang.NullPointerException
        at com.jme.bounding.BoundingSphere.merge(BoundingSphere.java:354)
        at com.jme.bounding.BoundingSphere.mergeLocal(BoundingSphere.java:340)
        at com.jme.scene.Node.updateWorldBound(Node.java:279)
        at com.jme.scene.Spatial.updateGeometricState(Spatial.java:384)
        at com.jme.scene.Node.updateWorldData(Node.java:218)
        at com.jme.scene.Spatial.updateGeometricState(Spatial.java:383)
        at com.jme.scene.Node.updateWorldData(Node.java:218)
        at com.jme.scene.Spatial.updateGeometricState(Spatial.java:383)
        at com.jme.scene.Node.updateWorldData(Node.java:218)
        at com.jme.scene.Spatial.updateGeometricState(Spatial.java:383)
        at jmetest.editer.EditerMain.update(EditerMain.java:133)
        at com.jme.app.VariableTimestepGame.start(VariableTimestepGame.java:95)
        at jmetest.editer.EditerMain$1.run(EditerMain.java:108)


Hear:

 main.updateGeometricState(interpolation, true);


when called in update.
2

shouldn’t you do:



Box ne = new Box(...);
ne.setModelBounds(new BoundingSphere()); // <--- Model Bounds
//......etc



??
3

Right, you need to set model bounds, not world bounds.