MaskType -> cast

GUI/View/Overlay/IOverlay.cpp

@@ -100,16 +100,13 @@ void IMaskOverlay::paint(QPainter* painter, const QStyleOptionGraphicsItem*, QWi
 
 QPainterPath IMaskOverlay::maskedShape() const
 {
-    static const QSet<MaskType> relevantMaskType = {MaskType::RECTANGLE, MaskType::POLYGON,
-                                                    MaskType::VERTICALLINE,
-                                                    MaskType::HORIZONTALLINE, MaskType::ELLIPSE};
-
     QPainterPath result = mapToScene(shape());
     for (const QGraphicsItem* item : scene()->items()) {
         const auto* overlay = dynamic_cast<const IOverlay*>(item);
         if (!overlay)
             continue;
-        if (!relevantMaskType.contains((MaskType)overlay->type()))
+        if (!(dynamic_cast<const IShapeOverlay*>(overlay)
+              || dynamic_cast<const ILineOverlay*>(overlay)))
             continue;
         if (itemMaskValue(overlay->parameterizedItem()))
             continue;