Nurbs surfaces can be periodic, but if you convert an OnRevSurface into an OnNurbsSurface you apparently get just a closed surface.
-- David Rutten [email protected] Robert McNeel & Associates On Mar 24, 12:45 am, joach <[email protected]> wrote: > Cau David > > It works fine, thank you. NurbsSurface cannot be a periodic?, or > better say why this function return false after convert brep into > onNurbsSurface? > > Your Czech is may be better then mine English:) > > Joach > > On Mar 24, 12:33 am, David Rutten <[email protected]> wrote: > > > Nazdar Joach, > > > what happens when you call IsPeriodic() directly on the m_F(0), rather > > than converting it to a Nurbs surface first? > > Right now you are comparing the original surface (which is probably an > > OnRevSurface (rotacni plocha = surface of revolution if my Czech > > serves me well)) with a nurbs surface conversion. > > > -- > > David Rutten > > [email protected] > > Robert McNeel & Associates > > > On Mar 24, 12:14 am, joach <[email protected]> wrote: > > > > Im not sure, I dont use this function so often, but i think a function > > > onNurbsSurface.isPeriodic doesnt work correctly. I used a cylinder as > > > onBrep (without caps) , in definition of Rhino is it like periodic in > > > V direction, but function return FALSE. Why? > > > > screen:http://grasshopper3d.googlegroups.com/web/VB.net%20Srf%20Periodic%20B... > > > > Is it my mistake or not? > > > Thx, Joach
