Re: [PyMOL] Using cmd.png with ray=False still ray traces the image

[Thomas Holder]

Hi João, Pete & Jason,

I think pml vs. py or 1.4 vs. 1.5 will make no difference. But I see two 
other things here:

1) renderer=2 is a "dry-run" according to the documentation, so it will 
not actually render a image.

2) if running in batch mode, there is no opengl window to capture from 
and PyMOL will always fall back to ray tracing, since it is the only way 
to obtain a figure in this mode.

Cheers,
   Thomas

Pete Meyer wrote, On 04/18/12 01:00:
> It may be worth trying pymol 1.4 (instead of 1.5) - although this 
> shouldn't make a difference, it might provide some more information (you 
> also mentioned that you've got a large scene - depending on composition 
> 1.4 may use less memory than 1.5).
> 
> You may also want to try using a pml script vs python (start pymol with 
> "-q -c your_raytrace_script.pml" arguments) and see if that helps, or at 
> least breaks in different ways.
> 
> Pete
> 
> João Rodrigues wrote:
>> Hi Jason,
>>
>> I've tried a lot of stuff, thus the renderer=2.. (i installed povray and 
>> tried to use it). With the default option the result is the same.
>>
>> cmd.png(default_name+'.png', width, height, dpi, ray=0)
>>
>> Doing what you wrote still causes the renderer to kick in.. I'm a bit out of 
>> ideas..
>>
>> Cheers,
>>
>> João [...] Rodrigues
>> http://nmr.chem.uu.nl/~joao
>>
>>
>>
>> No dia 17 de Abril de 2012 22:33, Jason Vertrees 
>> <jason.vertr...@schrodinger.com<mailto:jason.vertr...@schrodinger.com>> 
>> escreveu:
>> João,
>>
>> I'm not sure why this is giving you problems. Why do you have
>> renderer=2? Why not the default? Are you counting primitives? If so, I
>> suggest:
>>
>> cmd.set("ray_default_renderer", 2)
>>
>> # snapshot
>>
>> cmd.png(myFile, width=w, height=h, dpi=d, ray=0)
>>
>> # this will ray trace
>>
>> cmd.png(myFile, width=w, height=h, dpi=d, ray=1)
>>
>> Cheers,
>>
>> -- Jason
>>
>>
>> On Tue, Apr 17, 2012 at 1:21 PM, João Rodrigues 
>> <anar...@gmail.com<mailto:anar...@gmail.com>> wrote:
>>> Same result Jason, i also tried =false...
>>>
>>> No dia 17 de Abr de 2012 20:45, "Jason Vertrees"
>>> <jason.vertr...@schrodinger.com<mailto:jason.vertr...@schrodinger.com>> 
>>> escreveu:
>>>
>>>> Hi João,
>>>>
>>>> What about
>>>>
>>>> cmd.png(default_name+'.png', dpi=300, ray=0)
>>>>
>>>> Cheers,
>>>>
>>>> -- Jason
>>>>
>>>>
>>>> On Tue, Apr 17, 2012 at 11:18 AM, João Rodrigues 
>>>> <anar...@gmail.com<mailto:anar...@gmail.com>>
>>>> wrote:
>>>>> Hello all,
>>>>>
>>>>> I'm using Pymol v1.5 (from fink, so open source version) to trace large
>>>>> scene that I have. To that end, I'm avoiding having PyMOL open and I
>>>>> wrote a
>>>>> small python script to do the rendering for me. All goes well, except
>>>>> this
>>>>> last part (don't mind the obvious variable names):
>>>>>
>>>>>> cmd.ray(width, height, renderer=2)
>>>>>> cmd.png(default_name+'.png', dpi=300, ray=False)
>>>>> This actually renders my scene twice. I've tried cmd.do and it does the
>>>>> same.. am I missing something or is this not supposed to happen?
>>>>>
>>>>> Thanks and cheers,
>>>>>
>>>>> João [...] Rodrigues
>>>>> http://nmr.chem.uu.nl/~joao
>>>>
>>>> --
>>>> Jason Vertrees, PhD
>>>> PyMOL Product Manager
>>>> Schrödinger, LLC
>>>>
>>>> (e) jason.vertr...@schrodinger.com<mailto:jason.vertr...@schrodinger.com>
>>>> (o) +1 (603) 374-7120<tel:%2B1%20%28603%29%20374-7120>
>>
>>
>> --
>> Jason Vertrees, PhD
>> PyMOL Product Manager
>> Schrödinger, LLC
>>
>> (e) jason.vertr...@schrodinger.com<mailto:jason.vertr...@schrodinger.com>
>> (o) +1 (603) 374-7120<tel:%2B1%20%28603%29%20374-7120>

-- 
Thomas Holder
MPI for Developmental Biology
Spemannstr. 35
D-72076 Tübingen

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