On 13-05-28 14:11, Yarrow Madrona wrote:
Hi,I saw a post on this sight a while back about how to move the lighting. However, I have not seen any information on how to change the lighting of an internal cavity. I want the internal cavity to appear darker as it would be more realistic. However, it is almost like there is a light source coming from inside the object that brightens it up.Does anyone know how to change the internal lighting of a cavity when shown in surface representation?Thanks.
Hey,What you probably want is some kind of ambient occlusion. The tachyon rendering library (which is used with VMD) can do that. However, you can get a similar effect in PyMOL using the POV-Ray renderer with appropriate radiosity settings. I'm using a modified make_pov.py script to do something similar [1], but the POV-Ray settings are not yet finalized (I'm very new to POV-Ray myself). I'd also suggest using POV-Ray 3.7 to allow the use of multiple cores, as radiosity can increase rendering time quite significantly.
The file I posted does not yet have the correct field of view. I'll update the Gist once I've found the correct value.
Cheers, Patrice [1] https://gist.github.com/runiq/5669624
-- Yarrow Madrona Graduate Student Molecular Biology and Biochemistry Dept. University of California, Irvine Natural Sciences I, Rm 2403 Irvine, CA 92697
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