echidna@ecr.mu.oz.au (Eric H. Echidna) (06/14/91)
Recently it came to our attention that someone might have attempted developing an SGI GL compatible library using an early version of VOGLE, and while not only giving very little credit to the large amount of VOGLE code contained in it, even suggesting that VOGLE was derivative work. While we hope that any rumor concerning people grossly misrepresenting work which was done by us will prove to be untrue (and this will be looked into), it did seem like an interesting idea to find out how difficult it would be to convert VOGLE to an SGI GL compatible library. As it turned out it took about 60 marsupial hours spread over a period of four weeks to do it. Although there are several SGI GL compatible libraries already available, we believe this to be the only one that provides some support for things like double buffering and backfacing, as well as running on a variety of PC's in addition to X11, sunview, etc... Consequently we have decided to make the result of our efforts (now called VOGL) available and we would like to offer it as an example of what can be done when the people who did the original work on one problem address another problem of a similar nature, using the original work, and their understanding of it, as the basis for finding a solution. If there is sufficient interest, we will try to ensure that bugs, enhancements, etc... are dealt with as they are sent to us. The README is attached below. We have also included a hershey library which is written in SGI GL, but will also run with VOGL. It is available via anonymous ftp from: gondwana.ecr.mu.oz.au:pub/vogl.tar.Z [128.250.1.63] ---------------------cut here------------------cut here----------------- The directories in this directory contain the source for the VOGL library and the library hershey which is for manipulating the Hershey font data. They are as follows: docs contains the documentation such as there is. drivers contains the source to a variety of device drivers, currently restricted to: postcript, sun workstation, apollo workstations, X11 (R2, R3 & R4), tektronix (401x), hpgl, dxy, and the ibm pc cards: hercules mono, cga, ega, vga and sigma. examples contains some C and FORTRAN programs useful both in testing and (hopefully) learning how to use it. hershey contains the source for the hershey library plus the source for generating fonts and the hershey data for the occidental and oriental character sets. Note: as with VOGL this library is callable in C and FORTRAN. src contains the source for the C VOGL interface, and the source for the FORTRAN interfaces where available. VOGL is a device portable graphics library that tries to be Silicon Graphics Iris GL compatible. Our intention is that any VOGL program will compile unchanged on a machine running SGI GL (the examples do). VOGL is based entirely on our other graphics library VOGLE. While we still regard VOGLE as our main library (it is, and probably will be for some time to come, the one that gets the most use around here), we will gratefully accept any bug fixes or enhancements. As always suggestions are also welcome. This software may be used for any purpose commercial or otherwise. It is offered without any guarantee as to its suitability for any purpose or as to the sanity of its writers. We do ask that the source is passed on to anyone that requests a copy, and that people who get copies don't go round claiming they wrote it (that is why this one has a copyright notice in it, see file COPYRIGHT). Although VOGL is free we will drink any quantity of Beer you send to us. Regards, Eric H. Echidna Snail mail correspondance and alcoholic beverages should be directed to: The Software Support Programmer Department Of Engineering Computer Resources Faculty Of Engineering University Of Melbourne Vic 3052 Australia email to echidna@munnari.OZ.AU echidna@ecr.mu.OZ.AU
mccalpin@perelandra.cms.udel.edu (John D. McCalpin) (06/15/91)
>>>>> On 14 Jun 91 07:37:57 GMT, echidna@ecr.mu.oz.au (Eric H. Echidna) said:
Eric> Although there are several SGI GL compatible libraries already
Eric> available, we believe this to be the only one that provides some
Eric> support for things like double buffering and backfacing, as well
Eric> as running on a variety of PC's in addition to X11, sunview,
Eric> etc... Consequently we have decided to make the result of our
Eric> efforts (now called VOGL) available [...]
Eric> It is available via anonymous ftp from:
Eric> gondwana.ecr.mu.oz.au:pub/vogl.tar.Z [128.250.1.63]
For North American sites, the vogl library is now available by
anonymous ftp from perelandra.cms.udel.edu in Graphics/vogl.tar.Z.
--
John D. McCalpin mccalpin@perelandra.cms.udel.edu
Assistant Professor mccalpin@brahms.udel.edu
College of Marine Studies, U. Del. J.MCCALPIN/OMNETmccalpin@perelandra.cms.udel.edu (John D. McCalpin) (06/15/91)
>>>>> On 14 Jun 91 07:37:57 GMT, echidna@ecr.mu.oz.au (Eric H. Echidna) said:
Eric> Although there are several SGI GL compatible libraries already
Eric> available, we believe this to be the only one that provides some
Eric> support for things like double buffering and backfacing, as well
Eric> as running on a variety of PC's in addition to X11, sunview,
Eric> etc... Consequently we have decided to make the result of our
Eric> efforts (now called VOGL) available [....]
Eric> It is available via anonymous ftp from:
Eric> gondwana.ecr.mu.oz.au:pub/vogl.tar.Z [128.250.1.63]
The VOGL library is now available for North American users by
anonymous ftp from perelandra.cms.udel.edu in the file
~ftp/src/Graphics/vogl.tar.Z.
--
John D. McCalpin mccalpin@perelandra.cms.udel.edu
Assistant Professor mccalpin@brahms.udel.edu
College of Marine Studies, U. Del. J.MCCALPIN/OMNET