VMD-L Mailing List

From: Rogan Carr (rogan_at_ks.uiuc.edu)
Date: Fri Oct 31 2008 - 11:22:55 CDT

Hi Benjamin,

You should check out the Images and Movies Tutorial. It has a section
on drawing per-frame graphics, as well as tcl example code.

http://www.ks.uiuc.edu/Training/Tutorials/

Cheers,
Rogan

On Fri, 2008-10-31 at 16:46 +0100, Benjamin Bouvier wrote:
> Hi all,
>
> I'd like to make a movie out of a set of custom representations that are
> built using the 'graphics' low-level call.
>
> It seems, however, that 'graphics' calls affect all frames of a trajectory
> simultaneously rather than one at a time... Since the computation of the
> representations (ie, the generation of the Tcl code that draws them) is
> time-consuming, on-the-fly recalculation at each frame change is out of
> the question. My initial idea would be to store the Tcl code for each
> frame in a list or array, and have it execute at each frame change; not
> very elegant, and also not very fast, since parsing the (rather lengthy)
> Tcl code for each frame takes a couple of seconds...
>
> Any ideas?
>
> Cheers,
> --
> Benjamin