[TD]expose dimension arrow position to Python

src/Mod/TechDraw/Gui/QGIViewDimension.cpp

@@ -1176,6 +1176,8 @@ void QGIViewDimension::drawArrows(int count, const Base::Vector2d positions[], d
     const int arrowCount = 2;
     QGIArrow *arrows[arrowCount] = { aHead1, aHead2 };
 
+    arrowPositionsToFeature(positions);
+
     for (int i = 0; i < arrowCount; ++i) {
         QGIArrow *arrow = arrows[i];
 
@@ -1198,6 +1200,15 @@ void QGIViewDimension::drawArrows(int count, const Base::Vector2d positions[], d
     }
 }
 
+void QGIViewDimension::arrowPositionsToFeature(const Base::Vector2d positions[]) const
+{
+    auto dim( dynamic_cast<TechDraw::DrawViewDimension*>(getViewObject()) );
+    if( dim == nullptr )
+        return;
+
+    dim->saveArrowPositions(positions);
+}
+
 void QGIViewDimension::drawSingleLine(QPainterPath &painterPath, const Base::Vector2d &lineOrigin, double lineAngle,
                                       double startPosition, double endPosition) const
 {

src/Mod/TechDraw/Gui/QGIViewDimension.h

@@ -260,6 +260,8 @@ protected:
     //QGICMark* centerMark
     double m_lineWidth;
 
+    void arrowPositionsToFeature(const Base::Vector2d positions[]) const;
+
 private:
     static inline Base::Vector2d fromQtApp(const Base::Vector3d &v) { return Base::Vector2d(v.x, -v.y); }
     static inline Base::BoundBox2d fromQtGui(const QRectF &r)