NAME

       gflux - rippling surface graphics hack

SYNOPSIS

       gflux  [--display  host:display.screen]  [--window]  [--root]  [--window-id  number][--install] [--visual
       visual] [--delay microseconds] [--squares num] [--resolution num] [--mode  mode]  [--flat  num]  [--speed
       num] [--rotationx num] [--rotationy num] [--rotationz num] [--waves num] [--waveChange num] [--waveHeight
       num] [--waveFreq num] [--zoom num] [--wireframe] [--fps]

DESCRIPTION

       The gflux program draws a colourfull animated rippling square rotating in 3D space.

OPTIONS

       gflux accepts the following options:

       --window
               Draw on a newly-created window.  This is the default.

       --root  Draw on the root window.

       --window-id number
               Draw on the specified window.

       --install
               Install a private colormap for the window.

       --visual visual
               Specify which visual to use.  Legal values are the name of a  visual  class,  or  the  id  number
               (decimal or hex) of a specific visual.

       --squares num
               Specifies the size of the grid in squares. default 19

       --resolution num
               Specifies the wireframe detail of the squares. default 4

       --mode mode
               Specifies  the  draw  method:  wireframe; solid (meaning a solid colored surface); light (same as
               solid, but with lighting effects); checker  (a  texture-mapped  checkerboard  pattern);  or  grab
               (meaning grab an image to manipulate.)

               When  grabbing  images,  the  image will be grabbed from the portion of the screen underlying the
               window, or from the system's video input, or from a random file on  disk,  as  indicated  by  the
               grabDesktopImages,  grabVideoFrames,  and chooseRandomImages options in the ~/.xscreensaver file;
               see xscreensaver-settings(1) for more details.

       --wireframe
               Same as "-mode wire".

       --flat num
               0 for smooth shading 1 for flat. default 0

       --speed num
               Specifies speed of ripples flowing over the surface. default 0.05

       --rotationx num --rotationy num --rotationz num
               Specifies the speed of rotation of the surface in these axis

       --waves num
               Specifies the number of ripple centres at any  one  time.   Values  should  be  greater  than  1.
               default 3

       --waveChange num
               Specifies the duration of a ripple centre.  after this they fade away to be reborn elsewhere with
               a different frequency. default 50

       --waveHeight num
               Specifies the height of ripples on the surface. default 1.0

       --waveFreq num
               Specifies the maximum frequency of ripples. default 3.0

       --zoom num
               Specifies the size of the viewport. Smaller values fill the screen with rippling surface. default
               1.0

       --delay microseconds
               How long to pause between frames.  Default is 20000, or 0.02 second.

       --fps   Display the current frame rate, CPU load, and polygon count.

ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
               to  get  the  name  of  a  resource  file  that  overrides  the  global  resources  stored in the
               RESOURCE_MANAGER property.

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

SEE ALSO

       X(1), xscreensaver(1) xscreensaver-settings(1), xscreensaver-getimage(6x)

COPYRIGHT

       Copyright © 2000 by Josiah Pease.  Permission to use, copy, modify, distribute, and  sell  this  software
       and  its  documentation  for any purpose is hereby granted without fee, provided that the above copyright
       notice appear in all copies and that both that copyright notice and  this  permission  notice  appear  in
       supporting  documentation.   No  representations  are made about the suitability of this software for any
       purpose.  It is provided "as is" without express or implied warranty.

AUTHOR

       Josiah Pease <gflux@jpease.force9.co.uk>, 10-Jun-2000.