VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Fri Mar 20 2009 - 14:53:20 CDT

Leandro,
  No, by translate, I meant that you can press the "t" key, and
translate the molecule away from the viewer (not changing atom
coordinates), in the Z direction using the alternate mouse button

  John Stone
  vmd_at_ks.uiuc.edu

On Fri, Mar 20, 2009 at 04:28:53PM -0300, Leandro Martínez wrote:
> 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
> > 

-- 
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