NAME

       interference - decaying sinusoidal waves

SYNOPSIS

       interference  [-display  host:display.screen]  [-visual  visual] [-window] [-root] [-count
       number] [-gridsize number] [-delay number]  [-speed  number]  [-radius  number]  [-ncolors
       number] [-color-shift number] [-hue number] [-no-db] [-fps]

DESCRIPTION

       Another  color-field  hack,  this  one  works  by computing decaying sinusoidal waves, and
       allowing them to interfere with each other as their origins move.

OPTIONS

       -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.

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

       -root   Draw on the root window.

       -count number
               Number of Waves.  0 - 20.  Default: 3.

       -gridsize number
               Magnification. 1 - 20.  Default: 2.

       -delay number
               Per-frame delay, in microseconds.  Default: 30000 (0.03 seconds.).

       -speed number
               Wave Speed.  1 - 100.  Default: 30.

       -radius number
               Wave Size.  50 - 1500.   Default: 800.

       -ncolors number
               Number of Colors.  Default: 192.

       -color-shift number
               Color Contrast.  0 - 100.  Default: 60.

       -hue number
               Hue of the base color (0-360, as in HSV space.)  Default 0, meaning random.

       -db | -no-db
               Whether to double buffer.

       -fps    Display the current frame rate and CPU load.

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)

COPYRIGHT

       Copyright © 2002 by Hannu Mallat.  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

       Hannu Mallat.