Method setAngle

src/tools/UBGraphicsProtractor.h:58–58

        qreal angle () { return mStartAngle; }
        qreal markerAngle () { return mCurrentAngle; }
        void  setAngle (qreal angle) { mStartAngle = angle; setStartAngle(mStartAngle * 16); }
        void  setMarkerAngle (qreal angle) { mCurrentAngle = angle; }

        virtual UBItem* deepCopy() const;