/**
* Returns the <code>model</code> displayed by this component.
*/
public BranchGroup getModel() {
TransformGroup modelTransformGroup = (TransformGroup)this.sceneTree.getChild(0);
if (modelTransformGroup.numChildren() > 0) {
return (BranchGroup)modelTransformGroup.getChild(0);
} else {
return null;
}
}