I have replaced jsmol in FirstGlance in Jmol with the 12/13 version.
Indeed the Chrome disaster seems fixed. And in a quick check,
FirstGlance appeared to work correctly.
Hurray for Bob! I am constantly in awe! (And yes Yay for Mighty Mouse to
the rescue!)
Mouse rotation in Chrome is still jerkier than in Firefox, but it is
acceptable. (Better than Internet Explorer or Edge.)
zoomto *1.3 # default 1 sec
in a large Jmol (as in FirstGlance) is slower, jerkier, and takes
several seconds in Chrome, but is smooth and fast in Firefox.
(At http://chemapps.stolaf.edu/jmol/jsmol/jsmol.htm, how about an option
to increase the size of JSmol by 2.5 fold?)
My impression is that the jerky rotation in Chrome (jerkiness that
remains in the 12/13 version of JSmol) has been present well before the
disastrous version 47 of Chrome released December 1.
I wonder if you can do anything further, Bob, to make rotation-via-mouse
smoother in Chrome, more like it is in Firefox? Just a thought. You've
already worked a miracle overnight!
-Eric
On 12/13/15 1:56 PM, Robert Hanson wrote:
This new version is now available at SourceForge:
*Download Jmol-14.4.1_2015.12.13-binary.zip (60.3 MB)
<https://sourceforge.net/projects/jmol/files/latest/download?source=files>*
*IMPORTANT*: A very recent modification of Chrome makes Chrome
unusable with all previous versions of JSmol, at least until sometime
in January. The WebGL version of JSmol is not impacted.
This appears to be the result of a well-meaning attempt by Chromium
developers to enhance smooth scrolling of pages by lowering the
priority of setTimeout calls. However, the unanticipated fallout of
that change results in extremely rough rotation of models. You can
follow the issue here:
https://code.google.com/p/chromium/issues/detail?id=568725 Note that
one of the last comments on Dec. 11 indicates that there indicates
this issue will not be addressed until sometime in January.
*But there is a workaround. *This release of Jmol 14.4.1 should
correct that problem and, at the same time, may improve performance
with Microsoft Edge.
I have put up two versions of JSmol that illustrate the problem and
the fix:
(original) http://chemapps.stolaf.edu/jmol/jsmol/jsmol.htm
(fixed) http://chemapps.stolaf.edu/jmol/jsmol2/jsmol.htm
Testing of that second site would be appreciated.
The work-around is simple, and if you want, you can implement this
yourself on your site. Really (in terms of this bug) it is just a
single coding change in jsmol/js/JSmol.js, where one "setTimeout(f)"
has been replaced with "requestAnimationFrame(f)". Thus, if you
prefer, you should be able to just swap in a new JSmol.min.js or
JSmol.min.nojq.js for the old one. I have not tried this. Of course,
if you do that, then the other bugs listed below will still be there.
If you want to try that, here is the link to that file specifically:
http://chemapps.stolaf.edu/jmol/jsmol2/JSmol.min.js
Bob
Jmol.___JmolVersion="14.4.1_2015.12.13"
bug fix: JavaScript Chrome/Edge fix for slow response due to
setTimeout issues; uses requestAnimationFrame instead in JSmol.js
bug fix: zoomTo not setting time to 0 in the case of scriptWait
bug fix: set selectAllModels should restrict action of display/hide as
well
bug fix: set selectAllModels not working appropriately
bug fix: set selectAllModels should not be saved in state
bug fix: JmolData.jar does not update atom screen positions upon
REFRESH or select {visible}
bug fix: JmolData.jar -p flag does not work properly
bug fix: model 0 issued when more than one PDB file is open does not
execute model *
--
Robert M. Hanson
Larson-Anderson Professor of Chemistry
Chair, Department of Chemistry
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr
If nature does not answer first what we want,
it is better to take what answer we get.
-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
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