Merge topic 'add_get_done'

e0c4a44 Add GetDone method to 3d Renderwindowinteractor

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !2798

Author: martinken

Rendering/Core/vtkRenderWindowInteractor3D.h

@@ -257,6 +257,11 @@ class VTKRENDERINGCORE_EXPORT vtkRenderWindowInteractor3D : public vtkRenderWind
   vtkGetVector3Macro(LastTranslation3D, double);
   //@}
 
+  /**
+   * Is the interactor loop done
+   */
+  vtkGetMacro(Done, bool);
+
 protected:
   vtkRenderWindowInteractor3D();
   ~vtkRenderWindowInteractor3D() VTK_OVERRIDE;