hello everyone:<br> I want to use vtkImagePlaneWidget to get a slice from a 3D actor,<br>so i used the method GetResliceOutput, I thinked this method can get the slice that cut by the plane. But it didn't work , the slice the method returned was not the slice the plane cut, actrally it returned the slice we see on the screen! like: when I move the actor presented the 3D image, but I did't move the plane, the slice woule be different.<br>anyone know how to get the slice cut by the plane?<br> thx~~~<br>