Another solution: http://groups.google.com/group/grasshopper3d/web/flipplanes.jpg
-- David Rutten da...@mcneel.com Robert McNeel & Associates On Mar 31, 6:20 am, Andrew <and...@heumann.com> wrote: > http://grasshopper3d.googlegroups.com/web/flip_negative_planes.jpg > > This is what I came up with - there might be an easier way without > resorting to boolean/integer manipulation, but it works. > > On Mar 30, 7:24 pm, mentuccia <corsi.mariaang...@gmail.com> wrote: > > > Hi! > > How can I reverse the Z axe of a serie of plans only when this is > > negative? > > Thank you for your consideration