"jr" <cre### [at] gmailcom> wrote:

> hey, thanks!  does look like a good start[*].  now wondering how to make cones a
> little more valve-stem shape :-), SOR or lathe.

http://news.povray.org/povray.binaries.images/message/%3Cweb.5e67f167b0bd80624eec112d0%40news.povray.org%3E/#%3Cweb.5e6
7f167b0bd80624eec112d0%40news.povray.org%3E


Well, you could do one of those, or just append a flattened sphere onto the end
of the cone.

You could also go with:
http://www.f-lohmueller.de/pov_tut/all_shapes/shapes3_70e.htm
or
http://www.f-lohmueller.de/pov_tut/objects/obj_350e.htm
or an isosurface with non-linear scaling
(like I did with the vortex)
http://www.econym.demon.co.uk/isotut/substitute.htm
or something like what I did here:
http://news.povray.org/povray.binaries.images/thread/%3Cweb.5a31dcc89a8d03875cafe28e0%40news.povray.org%3E/?ttop=429971
&toff=300

The key with any of those would be that you'd have to define a base object
(likely at the y-axis pole) and then _rotate_ that into position.

IIRC, the "spikes" are trimers, and then there are some kind of smaller pentamer
pores on the surface of the protein capsule.

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