How to draw arrows on the reslicer using vtk?

How to draw an arrow like the 3D slicer?

Something like you would need to use an arrowSource and then a GlyphSource oriented by the eigenvectors filter. You can check out how it’s done in Slicer:
I guess this is what you’d like to see:

thanks! I have not read code of 3D slicer. So thanks for your suggestion!