Hi William You can do it, or something that's as close to a cone as you could wish for, by using a triangle fan. The apex of the fan is the top of the cone and then you just add points around the base of the cone at whatever granularity you like.
That would take some programming though, but it's not too difficult if you know some Python, as the CGO interface is very simple. I wrote a pymol plugin to do something similar: it takes an input specification file, parses it, and draws many CGO objects as a result. It works just fine. Making the resulting cones smoothly colored or transparent would be more, and harder, work though. Without doing that, your cones may not play nicely with the rest of the stuff drawn by pymol (which in my case is nothing at all :-)). Terry | Let's ask on the pymol mailing list... | | On Jan 10, 2007, at 11:02 AM, Martin.Laurberg wrote: | | > Damn, I can convert my 1969 CNS base pair restraints into what they call | > CGO drawn lines, and thereby display enforced hydrogen bonds, but I wish | > to draw cones for the base pair ladder as ribbons can do it. Oh well, .. | > | > On Wed, 10 Jan 2007, William Scott wrote: | >> | >> I think it is possible, but I don't know how. | >> | >> On Jan 10, 2007, at 9:24 AM, Martin.Laurberg wrote: | >>> Hi Bill, is it possible to draw a cone-shape in pymol?
