Xsis is an X frontend to the professional Stereograph renderer
(a fancy 3D stereogram renderer by Fabian Januszewski; see in the 
stereograph subdirectory for details).

Xsis is rather powerful since it has a builtin modeller to produce the
required depth images, and the current distribution includes also
samples of textures which can be used along with xsis/stereograph. 
The builtin modeller invoves some nice aspects of cartesian 3D 
geometry and can be seen as funny way of learning these mathematics...


REQUIREMENTS

1) You *MUST* have the following standard X libraries:
libX11, libXpm, libXaw, libXt, lipng, libz
It is very likely that they are already installed on your system.
We recommend anyway that you install further libXaw95 (although
this is optional), because libXaw95 provides much prettier widgets
than the plain libXaw ; libXaw3d could also be used for that purpose.

2) You *MUST* have compiled and installed the following *non standard*
X library: libsx, version 2.0+
libsx-2.01 can be found on ftp://ftp.ac-grenoble.fr/ge/Xlibraries
as well as the most recent Xaw95-1.1 library.
[Install  libsx.a  and  libsx.so  in /usr/lib or /usr/local/lib
and run `ldconfig'. These libraries are extremely small and won't
take up much disk space... They should compile in a minute!]

3) An image viewer. John Bradley's xv does it very well and is the default.
You can definitely use any other image viewer which supports PPM and PNG
formats. Modify according the first lines in xsis_src/xsis.c

4) (Included) The stereograph renderer by Fabian Januszewski.

5) A file pager. Default: xless. If you don't have xless, you can
replace xless by something like `xterm -e less` and modify
accordingly xsis.c. Note: xv and xless can also be found on
ftp://ftp.ac-grenoble.fr/ge/

The other requirements are needed only for being able to use the modeller.

6) The pnmtopng converter ( PPM->PNG ). This is included in the
netpbm package ( http://netpbm.sourceforge.net/ )

7) A text editor. Default: emacs. Everybody should know about it! If you 
machine is slow or has not enough RAM, any smaller text editor can be used 
instead.


AUTHOR:

Xsis is brought to you by Jean-Pierre Demailly

Email: demailly@ujf-grenoble.fr


COPYRIGHT (for xsis):

Universit de Grenoble I, France
Version 2.0, June 12, 2000
Licensed under the General Public Licence
GPL -- The Free Software Foundation

