halo



XScreenSaver(1)                                                XScreenSaver(1)




NAME

       halo - draw circular patterns


SYNOPSIS

       halo  [-display  host:display.screen]  [-foreground color] [-background
       color] [-window] [-root] [-mono] [-install]  [-visual  visual]  [-count
       int]  [-delay usecs] [-mode seuss | ramp | random ] [-animate] [-colors
       integer] [-cycle] [-no-cycle] [-cycle-delay usecs]


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.

       -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.

       -cycle

       -no-cycle
               Whether to do colormap cycling.  Default is to cycle.

       -cycle-delay
               Number  of microseconds between shifts of the colormap; default
               100000, or 1/10th second.


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  ©  1993 by Jamie Zawinski.  Permission to use, copy, modify,
       distribute, and sell this software and its documentation for  any  pur-
       pose  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 repre-
       sentations are made about the suitability of this software for any pur-
       pose.  It is provided "as is" without express or implied warranty.


AUTHOR

       Jamie Zawinski <jwz@jwz.org>, 6-jul-93.



X Version 11                       12-Jun-97                   XScreenSaver(1)

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