VMD-L Mailing List

From: Schreiner Eduard (eschrein_at_ks.uiuc.edu)
Date: Wed Mar 25 2009 - 23:53:49 CDT

Hi Leandro,

if you set your display to "perspective", you can zoom
inside the molecule, so very close.
At least it works for me.

eddi

On Mar 20, 2009, at 2:53 PM, John Stone wrote:

>
> 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

=====================================================
Eduard Schreiner
Theoretical and Computational Biophysics Group
NIH Resource for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave., Urbana, IL 61801
Phone: 217-244-4361
Fax: 217-244-6078
http://www.ks.uiuc.edu/~eschrein/
=============================================