Re: [PyMOL] internal cavity lighting

[Yarrow M. <ama...@uc...>]

Thanks Patrice,

I have used VMD mostly to look at trajectories. I should delve into in a
bit more. I really like having a one stop-shop for illustration which is
why I like pymol. However, I have heard a lot about POV-ray and want to
explore it. I have also heard that it is a "black-hole" and very
difficult. Still maybe worth it.

-Yarrow


> 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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-- 
Yarrow Madrona

Graduate Student
Molecular Biology and Biochemistry Dept.
University of California, Irvine
Natural Sciences I, Rm 2403
Irvine, CA 92697