Just to clarify, I not looking for an orthogonal plane cut, it is just a simple example to illustrate and show it does not work as I built the chain. I try to do something more general, so the initial image volume (and it is associated isosurface) could be located and orientated in ay possible way, an the implicit cutting function too.
I tried to do this task in more complicated ways, but I was not able to make it work even in this simpler scenario.
Thank you in advance for any clue !