static SimulationParametersWindow()
 {
     if (_displayManager == null)
     {
         _displayManager = new SceneViewDisplayManager(null);
     }
 }
 void OnEnable()
 {
     if (_displayManager == null)
     {
         _displayManager = new SceneViewDisplayManager(null);
     }
 }
		void OnEnable() {
			if (_displayManager == null) {
				_displayManager = new SceneViewDisplayManager(null);
			}

		}
		static SimulationParametersWindow() {
			if (_displayManager == null) {
				_displayManager = new SceneViewDisplayManager(null);
			}
		}
 public SceneViewDisplayManager()
 {
     EditorApplication.update += StartupUpdate;
     Instance = this;
 }