Zebra Stripe direction

I’m using Zebra to analyze a surface I’ve created by extruding several curves that have been modified using Match. I’m trying to visualize the curvature continuity using Zebra. I am trying to change the direction of the stripes. The Vertical and Horizontal options don’t seem to make the difference I am expecting. The stripes change a little, but not what I am expecting. To me Horizontal and Vertical would be 90 degrees to each other.

I’ve attached 2 screenshots of the surfaces and Zebra window.


Hello - I guess they are never going to align across the only curvature the surface has.


In a perspective view move the viewpoint around and the strip direction will change.