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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
-