[Chimera-users] Raytracing

Elaine Meng meng at cgl.ucsf.edu
Tue Feb 19 10:01:46 PST 2008

Hi Bernard,
What version of Chimera are you using?  I would probably try a fairly  
recent version such as the Feb 11 snapshot

because since the Nov 2007 production release, there have been  
lighting changes to improve povray results, and also a bug that  
generated "no pigment type" warnings and black areas in povray images  
has been fixed.

However, if you are already using a new version, it may be a  
different issue, and you could send us more information about the  
problem (see Help... Report a Bug in the Chimera menu).  That  
reporting  mechanism will automatically look up what hardware you  
have and what version you are using, and will let you attach extra  
files if desired.
Elaine C. Meng, Ph.D.                          meng at cgl.ucsf.edu
UCSF Computer Graphics Lab and Babbitt Lab
Department of Pharmaceutical Chemistry
University of California, San Francisco

On Feb 19, 2008, at 7:23 AM, Bernard Heymann wrote:

> Hi
> I'm trying to use povray directly from Chimera and everything works.
> However, the isosurface of my density comes out practically black,
> even though the clipping plane is rendered fine. I played a bit with
> lighting, but that does not seem to make a difference. Could you give
> me some guidance? I can send an output picture if needed.
> Bernard Heymann
> Rm 1515, 50 South Dr, NIH, Bethesda, 20892-8025
> Tel 301-451-8241, Fax 301-480-7629

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