Scott,
* Scott Classen <[email protected]> [2003-02-04 20:08] wrote:
> I was wondering if anybody has some scene settings for povray that
> produce nice depth-cued images. In particular I am making figures with
> a white background and I would like to try povray instead of the built
> in raytracer of PyMol, which appears to be quite slow, although it
> does produce very nice rendered images. I have successfully rendered a
> myimage.pov file produced from PyMol, but the lighting was very harsh
> and there was no depth-cueing (fog in povray?). Any help would be
> greatly appreciated.
I typically use the following script (I call it make_pov.py) and
"run" it from pymol once to load the function, and then I do
"make_pov('povray.inp')" to create the povray.inp file.
Then I edit that file to insert some lines like:
fog {
distance 10
fog_type 2
fog_alt 10.
fog_offset -160.
up <0.,1.,.4>
colour rgbt<1.0, 1.0, 1.0, 0.1>
turbulence 0.8
}
In this case I'm not really doing depth-cueing but adding fog at the
lower background edge (there were two planes defining the background and
a surface below the molecule) rising up towards the front upper edge of
the scene.
"fog_type 2" means a "rising fog" along the "up" vector. fog_type 1 is
a constant fog. To get pure depth cueing, you would want "up" to be along
the <0., 0., 1.> vector (I think!). You'll need to play around with the
distance and fog_offset parameters.
You wouldn't necessarily want the "turbulence" parameter in there
either.
Check out "Atmospheric Effects" in the povray documentation for many
more details:
http://www.povray.org/documentation/view/201/
Cheers,
Robert
--
Robert L. Campbell, Ph.D. [email protected]
Senior Research Associate phone: 613-533-6821
Dept. of Biochemistry, Queen's University, fax: 613-633-2497
Kingston, ON K7L 3N6 Canada
PGP Fingerprint: 9B49 3D3F A489 05DC B35C 8E33 F238 A8F5 F635 C0E2
(out of date web site:http://biophysics.med.jhmi.edu/rlc)
