Feb. 03, 2001
- Little news to tell I'm still alive and also very busy - but who cares ?
- Minor changes of the website design (graphics and internal stuffs). The new
Gallery section will be filled when I'll have time... Well, don't know when.
- I guess most of the benchmarks in the
grasp_surface examples page are
up to date now. Also you may have noticed new entries on this page that were
already online last year.
Nov. 14, 2000
- Added a new item in the Tutorial section to
help producing GRASP surfaces of better quality.
Oct. 12, 2000
- Pov4Grasp 1.31 - New enhancements
- Added a persistent option to the grasp_surface
object for use in "rigid-body" animations (translate/rotate/scaling). Object
data, including any property, are parsed only once at the beginning of the
animation. Useful for big surfaces and long animations. Note this is a very
limited feature derived from the
code. An example page will be available soon. Meanwhile, check the
text document to know the current
- Added a fog_start keyword to replace fog_offset
that was defining a starting offset from the camera in constant fog. Now this
feature also works for ground fog where the previous keyword has a different
meaning. For more details, please visit the
- Fixed a missing test for removing vista buffer when using camera
motion blur. This is now compatible with focal blur behaviour while the effect
- This will be the last Pov4Grasp update for a while since I'm currently
writing my thesis. I won't have time even to correct bugs, but you're welcome
to do if you find ones
Happy Pov4grasp'ing !
Sep. 22, 2000
- A few sections of this site are under reconstruction/updating so you may
have trouble surfing for a couple of days. I'm preparing the next version of
Pov4Grasp which will be released soon (minor upgrade).
- I was at the Understanding Protein Electrostatics conference in
Stockholm (Sep. 15-18) and had a nice discussion with Ansgar Philippsen (author
of the cool
) about a possible GRASP surface support in DINO. If implemented, it would
actually lead to an indirect support for
surface files in Pov4Grasp. MSMS produces much better quality surfaces than
any other software around. Also the molecular structures written by DINO could
use a GRASP format. I hope it's on the way !
Aug. 01, 2000
distributions of Pov4Grasp in the
The source archive is much smaller compared to gzip compression; executables
are almost the same size (could be compressed more through the RAR archiver,
but it's $hareware and not available for any UNIX-flavour). Bzip2 is
distributed under a BSD-style license.
- If you experience downloading problems with any version, you are
welcome to drop me a line so I'll try
to fix it.
Jul. 12, 2000
- This site has moved to a new server.
Please note its new URL: http://pov4grasp.free.fr. The previous server
) had technical problems for about one
month, and finally stopped free web hosting due to a french law, voted in late
June 2000, which requires every webmaster to be identified. This new server
has support for PHP3, so I've finally migrated from PHP/FI
- Pov4Grasp 1.3 - grasp_surface enhancements
- Added a preview mode to save parsing time and memory
for big molecular surfaces. It is based on a crude mesh simplification method
and should not be used for final rendering. Preview level 1 to 4 may be set
depending on the surface complexity. See the
grasp_surface examples and benchmarks
page for overview.
- Added a smooth flag to make the surface triangles
smooth or flat. May be used mainly in preview mode.
- Worked again on the object syntax. I hope it is "fully relaxed"
now, say it allows to write options in any order and gives warnings instead of
errors. gradient and colors_file should replace the
with sub-option, which is now devoted to template surface calls.
- Direct filter and transmit statements are now
available for every properties. Don't use with a gradient definition
as it may be ambiguous.
- See the updated tutorials section
and features page for more
- Grasp2pov 2.2a - Minor fix
- The mesh2 block has been removed when invoquing
-megapov command-line switch.
Jun. 21, 2000
- This is Summer Day - and in France, also the "Music Day"
- Ooops ! I've fixed a broken link for the source distribution of
- Some other links (as the 2 images given in old news below) may be
"forbidden". For now I can't correct this due to server setup.
Jun. 16, 2000
- Back to the new server again ! (seems not yet stable)
- A new tutorial section is open.
- Pov4Grasp 1.22 - grasp_surface bug fixes and enhancements
- The object syntax now accepts several spellings in its property
names. For instance, discretecolors should replace the ambiguous
- This discretecolors property has been improved. Object
transparency is now available for this property through dedicated
filter and/or transmit statements. Fixed misreading of the
optional color description file (defcol.dat), whose RGB components are actually
inverted. Filter and transmit values can be manually assigned to any color of
this file and will supersede the object transparency if defined.
- Changed again the texture handling so that a property will
never be overlayed by other textures. This now behaves as standard mesh where
each triangle has its own texture definition.
- A new verbose option must be used to display useful
messages while parsing the object. The default is verbose off since
standard POV-Ray objects give only warning or error messages, so you may add
this option to get the same behaviour as previous releases. Note this is
different from the +V command line option.
- See the features
page for details on these changes.
- Grasp2pov 2.2 - Continuing...
- Output mesh statement has been removed for better
control of the object textures. Now you have to #include the file
within either mesh or union block.
- Added a MegaPOV support (0.3 or later) called by the
-megapov option. The file must be included within the mesh2
object only. It seems that there's a MegaPov problem when the object is rotated
or translated, textures don't follow the move. See the
README file for details.
- The -vertexcolor property as been updated to comply
with some of the changes described above in the Pov4Grasp patch. Fixed the
-use option (reading of a color description file) that has been broken
since version 2.0 (oops). Added a global transparency through the
May. 27, 2000
- Server problems ! The
administrator has some trouble with the new server he installed, and has
switched back to the old one until a solution is found. Since my last
updates were not on this old server, I've uploaded all the things again.
I hope this story will finish soon... Sorry for the inconvenience !
May. 24, 2000
- Pov4Grasp 1.21
- The grasp_surface object texture handling has been improved
and is now supposed to have exactly the same behaviour as mesh object.
Multi-layered textures, materials, pigments, normals and finishes statements
should work fine. For instance, transparent surfaces are now able to cast both
correct shadows and those faster
dark shadows which were the only ones
allowed in the previous release.
- Some code reorganized, but not much; one minor bug fix; added makefile
- Added more informational and warning messages while parsing
grasp_surface objects, especially when dealing with template surfaces
and property mapping.
- Grasp2pov 2.1
- On Linux platforms, the macros defined in the grasp2pov
output could lead to an incredible memory leak of POV-Ray 3.1g. Their syntax
has been changed; now it seems to work quite normally.
- Fixed another possible POV-Ray problem with #ifdef directive
that did not work when the surface_texture parameter was actually
- The -special switch is now compatible with POV-Ray 3.1g and
uses macros also. I suppose I'm the only one who cares...
- Finally the tool has been moved to the
download page for consistency.
Apr. 25, 2000
- The server seems to be OK now, I've uploaded the DEC and SGI executables.
Get it from the download page.
Apr. 19, 2000
- Finally the Pov4Grasp website is officially open !
- As usual, it may be constantly under construction, and a few sections
should be reorganized. Also most of the example scripts and
benchmarks are not up to date
according to the current release (e.g. POV-ray syntax).
- The first online versions are Pov4Grasp 1.2 (POV-Ray patch)
and Grasp2pov 2.0 (console conversion tool).
- Hope to get some feedback from You, Pov4Grasp User !