   document.body.appendChild(this.ui.element);
            }

            static initControllers() {
                const { renderer, scene, camera } = WorldController;

                SceneController.init(this.view);
                RenderManager.init(renderer, scene, camera);
            }

            static initPanel() {
                const { renderer, scene, camera } = WorldController;

                PanelController.init(renderer, scene, camera, this.view, this.ui);
            }

            sta