Connecting vtk plane widget to a ctk slider

Hi Asheu,

you may have a look here:

Essentially I have a value from a slider in my module GUI and i use the value to rotate the a slice in the XY plane. You don’t need to set the center of the slice (i.e. 4 colomun of the slice matrix yellowSliceToRAS, https://github.com/Punzo/SlicerAstro/blob/master/AstroModeling/qSlicerAstroModelingModuleWidget.cxx#L2848-L2855).