[Chimera-users] Rendering solid objects and POVRAY

Greg Couch gregc at cgl.ucsf.edu
Wed Jun 16 10:47:08 PDT 2010

FYI, if you haven't done it already, the simplest way to resample your 
volume to a higher resolution is to change the step size in the step 
menu to 1.

     - Greg

On 06/16/2010 10:39 AM, Tom Goddard wrote:
> Hi Mario,
>   This is a limitation.  The solid style volume display is not 
> exported by Chimera to povray.  I think povray supports volumetric 
> rendering
>     http://local.wasp.uwa.edu.au/~pbourke/miscellaneous/df3/
> but we do not export the needed data.
>   I don't know if povray would be able to lessen the pixelation 
> artifacts.  They come from the volume data voxel size.  You could 
> minimize those artifacts by resampling your volume on a finer grid, 
> displaying in Chimera, and using the non-povray Chimera image save.  
> Here is some info about how to do that resampling in Chimera
> http://www.cgl.ucsf.edu/chimera/tutorials/volumetour/volumetour.html#resample 
> Those instructions talk about resampling on a rotated grid, but you 
> can just leave the grid unrotated.
>     Tom
>> Hi,
>> I am trying to render an image that includes a difference map density
>> displayed as a solid object. When I try to get the image directly from
>> the screen it shows patterns of pixelation. I then tried POVRAY and the
>> solid object data does not show up. Is there anything that I am missing?
>> Thanks
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