VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Fri Apr 30 2010 - 12:58:46 CDT

Hi,
  The darkening you see there isn't due to "shadows" but rather due to lack
of direct lighting. One way you can get an image that doesn't contain any
shading would be to change the material properties so that it is rendered
with 100% ambient and 0% diffuse and specular:
  material change ambient Opaque 1.000000
  material change diffuse Opaque 0.000000
  material change specular Opaque 0.000000

Try doing that and re-rendering with Tachyon and let me know if you
get the kind of image you're looking for.

What did you want to change in the plot.dat file?

Cheers,
  John Stone
  vmd_at_ks.uiuc.edu

On Thu, Apr 29, 2010 at 11:36:05AM -0400, Fatemesadat Emami wrote:
> Dear John,
> I am using your rendering tool "Tachyon" in vmd to produce a high quality
> image. I want to make a picture of thousands of the same peptides (related
> to different snap shots) on top of each other (I attached one picture to
> get an idea). Although I turned the shadow off (display shadow off > I did
> this just before rendering), I still can see shadows in the image!
> Therefore, the picture is a bit blurry when it is zoomed out. Is there
> anyway to make the colors shiny?
> My other question is that, peptides seems to have "Licorice" drawing
> method in the picture while they are loaded in vmd in Lines" format. Can I
> render them with line format? ( I am just looking a way to make them
> brighter)
> Is there any user's guide for changing the script file "plot.dat"?
> Also I was wondering if I can align these molecule according to one
> residue (e.g. first residue) rather than the backbone, is that possible?
> Many Thanks
>
> Fatima
>
> Yours Sincerely,
> Fateme Sadat Emami
> Nano Scale Laboratory
> Polymer Engineering Department
> The University of Akron 

-- 
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