Another product of the Gordon Research Conference:
The next version of Jmol will include the option:
write IDTF "filename.idtf"
This is a human-readable format that can be transformed into the binary U3D
format that then can be inserted into PDB files
using a simple command-line utility IDFConverter.exe (Windows only). The end
result is a stunning PDF file with a mouse-manipulatable model as a
"figure."
I am VERY happy to report that the file size is quite small. Early tests
(last week) using DeepExploration indicated that the file size
would be enormous, but it turns out that is because that program's algorithm
for convertign VRML to IDTF to U3D
does not reuse objects. But with proper reuse of objects (there are, for
example, only a few basic defined objects --
sphere, circle, cylinder, and cone -- the file size can be greatly reduced
(like by a factor of at least 10).
Still testing, but it looks pretty good already. I think it is quite
possible that we will be able to bypass IDTF completely
and go straight to U3D, but I still haven't quite figured out the
compression algorithm.
Bob
version=11.8.RC5_dev
# new feature: preliminary VERY COMPACT IDTF export (for U3D conversion)
# * after
# *
# * write t.idtf
# *
# * using IDTFConverter.exe, on Windows one can turn these files into VERY
COMPACT U3D files.
# *
# * IDTFConverter.exe -input t.idtf -output t.u3d
# *
# * see http://sourceforge.net/projects/u3d/
# * see http://en.wikipedia.org/wiki/Universal_3D
# * see
http://www.ecma-international.org/publications/standards/Ecma-363.htm
# * in the downloadable zip file, see docs/IntermediateFormat/IDTF Format
Description.pdf
#
--
Robert M. Hanson
Professor of Chemistry
St. Olaf College
1520 St. Olaf Ave.
Northfield, MN 55057
http://www.stolaf.edu/people/hansonr
phone: 507-786-3107
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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