VMD-L Mailing List

From: Leandro Martínez (leandromartinez98_at_gmail.com)
Date: Fri Mar 20 2009 - 14:28:53 CDT

Thanks John,
That was more or less what I'm doing. The issue with
playing with the display distance is that the movement
controls become too sensitive, that is, when I reduce
the display distance, a small movement in the mouse
moves too much the molecules. This is nothing very
serious though. When you say "translate the molecule" and
then "scale it up", by "translate" you suggest actually
changing its coordinates with "move molecule"?
Thanks again,
Leandro.

On Fri, Mar 20, 2009 at 1:52 PM, John Stone <johns_at_ks.uiuc.edu> wrote:

>
> Hi,
> No, it is not possible. OpenGL requires a front and rear clipping
> plane at a hardware level, and they cannot be disabled, only set to
> nearly zero (near) and nearly infinity (far).
> If you want to get "closer" you can instead translate the molecule
> farther away and then scale it up, and you can also change the combination
> of display height/distance options to make the rendering look the
> way you want. Let us know if you need more help with this.
>
> Cheers,
> John
>
> On Fri, Mar 20, 2009 at 09:48:51AM -0300, Leandro Martínez wrote:
> > Hello,
> > Is it possible to fully deactivate the "near clipping"? Reducing
> > it to its minimum in the Display Settings is not enough sometimes.
> > One can zoom by changing the screen distance, but then the control
> > over translation becomes too sensitive.
> > Thanks,
> > Leandro.
>
> --
> 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/ <http://www.ks.uiuc.edu/%7Ejohns/>
> Fax: 217-244-6078
>