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26beta2
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1996-08-19
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Release notes for RasMol 2.6beta2
NOTE: RasMol's built-in help, and the RasMol Manual, document the last
full-release, version 2.5. To have all documented changes since then,
you need this document ('26beta2') plus the document '26beta1'.
This file is a slighly abbreviated and modified version (i.e. it covers
only the changes relevant for the RISC OS release) of a message sent to
the RasMol mailing list by Roger Sayle.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[...] I've decided to release a rushed RasMol version 2.6beta2.
This fixes many of the bugs and problems that people have encountered,
adds some more functionality and increases performance. A complete list
of changes is given below, but to summarise an acceptable side-by-side
stereo is now working and the documentation still hasn't been updated.
I'm still not happy with stereo and so this will probably change before
v2.6final.
Changes between RasMol v2.6beta1 and RasMol v2.6beta2
o RasMol now allows a numeric parameter to the "trace" command that
allows the specification of the width of the "backbone" worm. This
both fixes a bug in machine generated scripts containing cartoons,
but also allows functionality such as the new "trace temperature"
command which displays the backbone as a wider cylinder at high
temperature factors and thinner at lower. This representation
should be useful to x-ray crystallographers and NMR spectroscopists.
o Side-by-side stereo is now implemented as well as the "set stereo"
command to control the separation between the left and right images.
Note that stereo support is not implemented through out RasMol, for
example, Vector PostScript probably shouldn't be generated whilst
stereo is on, the RasMol "write script" command probably doesn't
save the stereo state of the current image, turning stereo on and
off doesn't reposition the center of the molecule and finally the
performance isn't as good as it could be.
o Significantly increased the performance of ribbons and cartoons on
all platforms, but especially on Macintoshes and PCs without hardware
accelleration. All floating point calculations have been removed
from the RasMol polygon rendering code which is now integer only.
[This also has a strong impact on the RISC OS version].
o The RasMol "write gif <filename>" command has been modified to allow
generation of transparent GIFs. This may be controlled by the "set
transparent on" and "set transparent off" commands.
o RasMol will now display double and triple bonds automatically for any
file containing bond order information, rather than require the user
type "set bonds true".
o Strands, ribbons and cartoons can now be drawn through protein
residues that are not standard amino acids (i.e. UNK) provided that
the residues contain the appropriate N-CA-C-O atom backbone.
o Vector PostScript output now also contains RasMol distance monitors.
o The RasMol "write mdl <filename>" command to write out an MDL Mol
file now only writes out the currently selected atoms.
o RasMol can now perform shading to an arbitrary background colour,
rather than just black. This is controlled by the commands "set
backfade on" and "set backfade off". For example, this may be used
to generate depth-cued wireframe images that fade to white, rather
than black.
o The RasMol PDB file parser has been modified to correctly handle
the new "MOL_ID:" molecule names.
And probably have a dozen other things that I've forgotten. Alas I've
become very lazy at keeping the RasMol "ChangeLog" upto date. My
apologies for all those features that were requested but didn't quite
make it into this interim release.
[...]
Roger
--
Roger Sayle INTERNET: ras32425@ggr.co.uk
Glaxo Wellcome Medicines Research Centre, rasmol@ggr.co.uk
Gunnels Wood Road, Stevenage, Tel: +44 (0)1438 763246 (direct line)
Hertfordshire, SG1 2NY, U.K. Fax: +44 (0)1438 763082