VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Wed Sep 06 2017 - 21:48:06 CDT

James,
  I found this message caught in a spam filter I was about to blow away.
Sorry for the long delay! The .zip file attachment prevented it from
being delivered normally.

Something appears to be going quite wrong there, as the output code is
simple, and is just using fprintf() with "%g" format specifiers to
emit the floating point coordinates for the drawn geometry.

I looked up what might be causing "#IND" to be emitted, and this
is apparently an issue with how Windows treats a NaN. How did you
create the VRML scene you exported from VMD? It seems that windows
ran out of floating point precision, or something went wrong
with the arithmetic in one of the graphical representations.

Best regards,
  John Stone
  vmd_at_ks.uiuc.edu

On Thu, Apr 27, 2017 at 10:50:19AM -0400, James Kress wrote:
> Hi John,
>
>
>
> The VRML (1 and 2) rendering files created by VMD appear to be malformed.
> The VRML files are not recognized by any VRML viewer or converter I can
> find.
>
>
>
> The problem seems to be related to this error:
>
>
>
> file://C:\Program%20Files%20(x86)\University%20of%20Illinois\VMD\vmdscene.wrl(48)
> : float expected
>
>
>
> line 48 looks like this:
>
> translation -1.#IND -1.#IND -1.#IND
>
>
>
> I have never seen a construct like this in any VRML file I have used or
> created. Is it what you intended? What is the meaning of #IND?
>
>
>
> The file is attached (in the zip archive). How do I fix this?
>
>
>
> Thanks.
>
>
>
> Jim Kress
>
>
>
> 

-- 
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/