Hi Rodrigo, you have to somehow get an instance of an OnSurface or OnBrepFace class, then you can call evaluation functions on that. I sadly don't know python very well (Python for Grasshopper was developed by Steve Baer, who's also doing Python for Rhino5.)
I do know that computing curvature values is not easy. In fact, it is astoundingly difficult. There's a bunch of functions available in OnUtil and maybe RhUtil that do some of the work, but you'll have to ask this on the Rhino plugin newsgroup, where the McNeel math guys hang out. -- David Rutten Robert McNeel & Associates On Oct 3, 4:48 pm, Rodrigo Culagovski <[EMAIL PROTECTED]> wrote: > Have posted an example of using python (and the scripting beta > version, of course) to recursively subdivide a surface according to > its Gaussian curvature. Still kind of rough, and has some holes. > > http://groups.google.com/group/grasshopper3d/web/gauss.3dmhttp://groups.google.com/group/grasshopper3d/web/gaussian4.wrm > > Questions: How do you evaluate a point on a surface from python? > Gaussian curvature? What I'm doing here is evaluating the curvature > before going into the script, but it would be much more flexible if I > could do it from the script itself. > > Cheers, > > Rodrigo Culagovski > parametrica
