message: Parse root node as rapidjson object
diff: @@ -885,7 +885,14 @@ void load_vsnray(std::vector<std::string> const& filenames, model& mod)
  rapidjson::Document doc;
  doc.ParseStream(frs);
  - root = parse_node(doc);
  + if (doc.IsObject())
  + {
  + root = parse_node(doc.GetObject());
  + }
  + else
  + {
  + throw std::runtime_error("");
  + }
  }
  if (mod.scene_graph == nullptr)
  