Thanks Thomas!

This is exactly what I was looking for.

-Yarrow


> Hi Yarrow and Patrice,
>
> PyMOL introduced ambient occlusion in version 1.5.0 for surface
> rendering. Try this:
>
> fetch 1rx1, async=0
> as surface
> set ambient_occlusion_mode
>
> If you are a pymol sponsor, visit this page:
> http://pymol.org/dsc/dokuwiki/doku.php?id=media:ambient_occlusion
>
> Hope that helps.
>
> Cheers,
>   Thomas
>
> Patrice Peterson wrote, On 05/29/13 13:37:
>> 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
>
> --
> Thomas Holder
> PyMOL Developer
> Schrödinger Contractor
>
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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




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