RenderedTarget: Add missing transformed hull dirty changes

Author: adazem009

src/renderedtarget.cpp

@@ -228,6 +228,7 @@ void RenderedTarget::setEngine(IEngine *newEngine)
     m_cpuTexture = Texture();
     m_penLayer = PenLayer::getProjectPenLayer(m_engine);
     m_convexHullDirty = true;
+    m_transformedHullDirty = true;
     clearGraphicEffects();
     m_hullPoints.clear();
 
@@ -814,6 +815,7 @@ const std::vector<QPointF> &RenderedTarget::transformedHullPoints() const
         m_transformedHullPoints.push_back(QPointF(x, y));
     }
 
+    m_transformedHullDirty = false;
     return m_transformedHullPoints;
 }
 

src/renderedtarget.h

@@ -174,7 +174,7 @@ class RenderedTarget : public IRenderedTarget
         qreal m_maximumHeight = std::numeric_limits<double>::infinity();
         bool m_convexHullDirty = true;
         std::vector<QPoint> m_hullPoints;
-        bool m_transformedHullDirty = true;
+        mutable bool m_transformedHullDirty = true;
         mutable std::vector<QPointF> m_transformedHullPoints; // NOTE: Use transformedHullPoints();
         bool m_clicked = false;                               // left mouse button only!
         double m_dragX = 0;