Re #11422 Added virtual destructors to PowerScaleEngine

Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.cpp

@@ -28,7 +28,6 @@
  ***************************************************************************/
 
 #include "PowerScaleEngine.h"
-#include "ScaleEngine.h"
 
 /*!
   Return a dummy transformation
@@ -38,6 +37,8 @@ QwtScaleTransformation *PowerScaleEngine::transformation() const
     return new QwtScaleTransformation(QwtScaleTransformation::Other);
 }
 
+PowerScaleEngine::~PowerScaleEngine() {}
+
 /*!
     Align and divide an interval
 
@@ -245,6 +246,8 @@ QwtScaleTransformation *PowerScaleTransformation::copy() const
 	return new PowerScaleTransformation(d_engine);
 }
 
+PowerScaleTransformation::~PowerScaleTransformation() {}
+
 /*
  * Transform a value between 2 linear intervals
  *

Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.h

@@ -41,6 +41,7 @@ public:
 	virtual double xForm(double x, double, double, double p1, double p2) const;
 	virtual double invXForm(double x, double s1, double s2, double p1, double p2) const;
 	QwtScaleTransformation* copy() const;
+  virtual ~PowerScaleTransformation();
 private:
   double nth_power;
 };
@@ -61,6 +62,8 @@ public:
 
     virtual QwtScaleTransformation *transformation() const;
 
+    virtual ~PowerScaleEngine();
+
 protected:
     QwtDoubleInterval align(const QwtDoubleInterval&,
         double stepSize) const;