+ vtkPlanes *_planes;
+ vtkProp *_actor;
+
+ vtkAlgorithm *_mCubes;
+ vtkAlgorithm *_tissueStripper;
+ vtkAlgorithm *_tissueClipper;
+#if (VTK_MAJOR_VERSION <= 7)
+ vtkVolumeRayCastMapper *_vtkVolumeRayCastMapper;
+#else
+ vtkFixedPointVolumeRayCastMapper *_vtkVolumeRayCastMapper;
+#endif