VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Thu Mar 03 2016 - 12:59:50 CST

Hi,
  Aside from what Axel mentioned, I'm not sure what your usage of the TkPNG
is intended for, but I have recently added PNG support to developmental
versions of VMD 1.9.3 to allow the "Snapshot" and various internal
ray tracing engines to save images directly to PNG format.
If you need PNG capabilities specifically within Tk that's interesting
and something I want to know more about. I haven't looked at the TkPNG
package, but I would be concerned about whatever library dependencies it
might carry with it. If it is possible to build it and the rest of VMD
against the same PNG library, then this might be relatively straightforward.

Cheers,
  John

On Thu, Mar 03, 2016 at 01:52:12PM -0500, Axel Kohlmeyer wrote:
> On Thu, Mar 3, 2016 at 12:19 PM, Nuno Sousa Cerqueira
> <nscerqueira_at_gmail.com> wrote:
> > Tcl/Tk 8.6 already allows the use of png fie format but not in version 8.5.
> >
> > That???s why I was asking for the version 8.6 in VMD
> >
> > Another way to do this involves the used of the TkPNG package. When I
> > compile it under macOS it works perfectly and wish8.5 behaves like wish8.6.
> > However when I run the same code in VMD it gives the following error:
> >
> > dlopen(/Library/Tcl/lib/tkpng0.9/libtkpng0.9.dylib, 6): no suitable image
> > found. Did find:
> > /Library/Tcl/lib/tkpng0.9/libtkpng0.9.dylib: mach-o, but wrong architecture
> >
> >
> > Any workaround for this issue ?
>
> use a suitable netpbm tool to convert the image into a format
> supported with older version?
>
> axel.
>
> >
> >
> > Regards,
> >
> > Nuno
> > ______________________________________________
> >
> > Nuno M. F. Sousa A. Cerqueira
> > Chemistry Department
> > Faculty of Sciences
> > University of Porto
> > Rua do Campo Alegre, s/n
> > 4169-007 Porto
> > Portugal
> > Tel: +351 220402501
> > Fax: +351 220 402 009
> > email: nscerque_at_fc.up.pt
> > website: http://www.fc.up.pt/pessoas/nscerque
> >
> >
> >
> >
> > On 03 Mar 2016, at 16:28, Nuno Sousa Cerqueira <nscerqueira_at_gmail.com>
> > wrote:
> >
> > Hello to all,
> >
> > Is there any version of VMD compiled with tcl and tk 8.6 ?
> >
> >
> > Regards,
> >
> > nuno
> > ______________________________________________
> >
> > Nuno M. F. Sousa A. Cerqueira
> > Chemistry Department
> > Faculty of Sciences
> > University of Porto
> > Rua do Campo Alegre, s/n
> > 4169-007 Porto
> > Portugal
> > Tel: +351 220402501
> > Fax: +351 220 402 009
> > email: nscerque_at_fc.up.pt
> > website: http://www.fc.up.pt/pessoas/nscerque
> >
> >
> >
> >
> >
>
>
>
> --
> Dr. Axel Kohlmeyer akohlmey_at_gmail.com http://goo.gl/1wk0
> College of Science & Technology, Temple University, Philadelphia PA, USA
> International Centre for Theoretical Physics, Trieste. Italy. 

-- 
NIH Center for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
http://www.ks.uiuc.edu/~johns/           Phone: 217-244-3349
http://www.ks.uiuc.edu/Research/vmd/