Merge branch 'charts-top-right-axis-bug-rel' into release

Change-Id: I7e73ec8f46bb1530e5688709c16d9cbacc9091c1

Charts/vtkChartXY.cxx

@@ -1160,8 +1160,8 @@ bool vtkChartXY::MouseMoveEvent(const vtkContextMouseEvent &mouse)
     // Figure out how much the mouse has moved by in plot coordinates - pan
     vtkVector2d screenPos(mouse.GetScreenPos().Cast<double>().GetData());
     vtkVector2d lastScreenPos(mouse.GetLastScreenPos().Cast<double>().GetData());
-    vtkVector2d pos(0.0);
-    vtkVector2d last(0.0);
+    vtkVector2d pos(0.0, 0.0);
+    vtkVector2d last(0.0, 0.0);
 
     // Go from screen to scene coordinates to work out the delta
     vtkTransform2D *transform =
@@ -1188,6 +1188,11 @@ bool vtkChartXY::MouseMoveEvent(const vtkContextMouseEvent &mouse)
     if (this->ChartPrivate->PlotCorners.size() > 2)
       {
       // Go from screen to scene coordinates to work out the delta
+      screenPos = vtkVector2d(mouse.GetScreenPos().Cast<double>().GetData());
+      lastScreenPos =
+          vtkVector2d(mouse.GetLastScreenPos().Cast<double>().GetData());
+      pos = vtkVector2d(0.0, 0.0);
+      last = vtkVector2d(0.0, 0.0);
       transform = this->ChartPrivate->PlotCorners[2]->GetTransform();
       transform->InverseTransformPoints(screenPos.GetData(), pos.GetData(), 1);
       transform->InverseTransformPoints(lastScreenPos.GetData(), last.GetData(), 1);