NAME

       gflux - rippling surface graphics hack

SYNOPSIS

       gflux [-display host:display.screen] [-window] [-root] [-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.

       -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-demo(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.

SEE ALSO

       X(1), xscreensaver(1) xscreensaver-demo(1), xscreensaver-getimage(1)

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.