Method loadGroupNode

tutorials/common/scenegraph/xml_loader.cpp:1699–1705

  }

  Ref<SceneGraph::Node> XMLLoader::loadGroupNode(const Ref<XML>& xml) 
  {
    Ref<SceneGraph::GroupNode> group = new SceneGraph::GroupNode;
    for (size_t i=0; i<xml->size(); i++)
      group->add(loadNode(xml->children[i]));
    return group.cast<SceneGraph::Node>();
  }
  
  Ref<SceneGraph::Node> XMLLoader::loadNode(const Ref<XML>& xml)
  {