halo(6)                       XScreenSaver manual                      halo(6)

NAME
       halo - draw circular patterns

SYNOPSIS
       halo [--display host:display.screen] [--foreground color] [--background
       color] [--window] [--root] [--window-id number][--mono] [--install]
       [--visual visual] [--count int] [--delay usecs] [--mode seuss | ramp |
       random ] [--animate] [--colors integer] [--fps]

DESCRIPTION
       The halo program draws cool patterns based on circles.

OPTIONS
       halo 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.

       --mono  If on a color display, pretend we're on a monochrome display.

       --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.

       --count integer
               How many circles to draw.  Default 0, meaning random.

       --mode seuss | ramp | random
               In seuss mode, alternating striped curves will be drawn.

               In ramp mode, a color ramp will be drawn.

               random means pick the mode randomly.

       --delay microseconds
               How much of a delay should be introduced between steps of the
               animation.  Default 100000, or about 0.1 second.

       --colors integer
               How many colors to use.  Default 100.

       --animate
               If specified, then the centerpoints of the circles will bounce
               around.  Otherwise, the circles will be drawn once, erased, and
               a new set of circles will be drawn.

       --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.

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

SEE ALSO
       X(1), xscreensaver(1)

COPYRIGHT
       Copyright (C) 1993 by Jamie Zawinski.  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
       Jamie Zawinski <jwz@jwz.org>, 6-jul-93.

X Version 11                  6.08 (10-Oct-2023)                       halo(6)