+enum VisibilityState
+{
+ ShownState, //!< Object is shown in viewer
+ HiddenState, //!< Object is hidden in viewer
+ UnpresentableState //!< Unpresentable object
+};
+
+enum Axis {
+ yLeft = QwtPlot::yLeft,
+ yRight = QwtPlot::yRight,
+ xBottom = QwtPlot::xBottom,
+ xTop = QwtPlot::xTop,
+};
+