VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Wed Feb 23 2005 - 15:54:48 CST

Alex,
  This is interesting, I haven't encountered the behavior you're describing
before. Can you package up the file(s) and a VMD script that
illustrate this and either email it to me or post it for me to download?
I think that with the files and a script to reproduce what you're seeing,
I should be able to help you get the results you want much more quickly.

  John Stone
  vmd_at_ks.uiuc.edu

On Wed, Feb 23, 2005 at 04:45:26PM -0500, apeyser_at_newssun.med.miami.edu wrote:
> John,
>
> Yes, with internal tachyon I get the same results. Another feature of this
> behavior is that the gray zone appears to have a sharp cutoff. For some range
> around 0.5, it is exactly gray, and on either side of that range the normal
> behavior appears to take over sharply.
>
> Thanks,
> Alex
>
> >Alex,
> > Do you have a similar problem if you render the image with Tachyon, or
> >is this specific to just POV-Ray?
> >
> >Thanks,
> > John Stone
> > vmd_at_ks.uiuc.edu
>
> >On Tue, Feb 22, 2005 at 07:34:47PM -0000, apeyser_at_newssun.med.miami.edu wrote:
> >>
> >>
> >>
> >> I'm attempting to render a vmd scene composed of spheres colored with the User
> >> method, in pov-ray.
> >>
> >> When rendered in OpenGL, I get the proper mapping of User values to Color, a
> >> smooth mapping from red for min, green for mid and blue for max. However, the
> >> .pov file produced by vmd is mapping the mid colors to
> >> rgbt<0.350,0.350,0.350,0.7>, which is gray instead of green. The min and max
> >> colors are mapped properly to red and blue, respectively.
> >>
> >> I have been able to test with 1.8.3 and 1.8.3b.
> >>
> >> Thanks,
> >> Alex Peyser
>
> >--
> >NIH Resource for Macromolecular Modeling and Bioinformatics
> >Beckman Institute for Advanced Science and Technology
> >University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
> >Email: johns_at_ks.uiuc.edu Phone: 217-244-3349
> > WWW: http://www.ks.uiuc.edu/~johns/ Fax: 217-244-6078
>
>
>
>
>
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-- 
NIH Resource for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
Email: johns_at_ks.uiuc.edu                 Phone: 217-244-3349              
  WWW: http://www.ks.uiuc.edu/~johns/      Fax: 217-244-6078