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 © 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.