[Chimera-users] Visualisation in Headless Chimera

[Greg Couch]

The crash due to "set silhouette" is probably due to the ancient version 
of libOSMesa.so that is bundled with Chimera.  See my earlier response 
to you, that I mistakenly only sent to the mailing list: 
http://plato.cgl.ucsf.edu/pipermail/chimera-users/2019-March/015584.html.

And if you're going to use povray for the final image, then "set 
silhouette" doesn't help you, as that setting is not exported, so you 
could remove it and not crash :-).

     Bonne chance,

     Greg

On 4/2/2019 12:39 AM, James Starlight wrote:
> Thank you very much, Elaine!
> The only thing is to understand why "set silhouette" produces crush at
> the stage of the image rendering both with chimera-headless or pow-ray
> rendering ;o
>
> пн, 1 апр. 2019 г. в 20:10, Elaine Meng <meng at cgl.ucsf.edu>:
>> Hi James,
>> In my experience, i get much better images just using Chimera rendering, not POVray.  If you want shadows you can turn them on directly in Chimera (e.g. command: set shadows), and some Chimera settings are not relevant to POVray (silhouette edges, etc.).
>> <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/print.html#tips>
>>
>> However, if you really want to use it, you can set POV-Ray Options in the Preferences, save the preferences, and then copy that preferences file to the headless machine.  Still this is only a small subset of the things one could possibly change in povray, so if you’re a POVray expert you could fiddle with the POVray conf file (see Chimera Log for where this would be), and possibly re-run povray directly using the Chimera-generated .ini and .pov files (from the “copy” command with “raytrace”).
>> <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/copy.html>
>>
>> I hope this helps,
>> Elaine
>> -----
>> Elaine C. Meng, Ph.D.
>> UCSF Chimera(X) team
>> Department of Pharmaceutical Chemistry
>> University of California, San Francisco
>>
>>> On Apr 1, 2019, at 2:58 AM, James Starlight <jmsstarlight at gmail.com> wrote:
>>>
>>> P.S. could you also suggest me how it would be possible to change
>>> pov-ray options working in Headless Chimera?
>>>
>>> I am using it with a simple script:
>>>
>>> # make visualisation of b-factors
>>> rangecolor bfactor 2 dark red 20 firebrick 40 orange red 60 orange 100 yellow
>>>
>>> # make a png immage
>>> copy file ${output}/structure/${pdb_name}.png png width 800 height 600
>>> supersample 4 raytrace rtwait" > "${temp}/chimera.${pdb_name}.com"
>>>
>>> As the result I have an image with the alpha channel (although I
>>> indicated not to use it in my session via
>>> chimera-headless ${pdb} script.com --nobgopacity
>>>
>>> finally I would like to change some rendeting options using the same
>>> scripting work-flow like "Quality",  "Antialias depth"  etc
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