void SetCutSlice(double slice);
/**Initialize the actor and set the inputs. If vf is not null, will use
**it to propagate the contour on all time frames */
- void Init(vvMesh::Pointer mesh,int time_slice, vvImage::Pointer vf=NULL);
+ void Init(vvMesh::Pointer mesh,int time_slice, vvImage::Pointer vf=ITK_NULLPTR);
///Set the time slice (only useful when using a 4D contour)
void SetTimeSlice(int time);
///Toggles between normal 4D mode and superposition mode