iNode.setForceCull(useModel); iNode2.setForceCull(!useModel);
iNode.setCullMode(useModel ? Spatial.CULL_ALWAYS : Spatial.CULL_DYNAMIC); iNode2.setCullMode(useModel ? Spatial.CULL_DYNAMIC : Spatial.CULL_ALWAYS);
  protected void simpleUpdate() {    if (KeyBindingManager        .getKeyBindingManager()        .isValidCommand("switch_models", false)) {      useModel = !useModel;      iNode.setForceCull(useModel);      iNode2.setForceCull(!useModel);    }  }