XScreenSaver(1)

NAME
       halo - draw circular interference patterns

SYNOPSIS
       halo  [-display  host:display.screen]  [-foreground color]
       [-background color] [-window] [-root]  [-mono]  [-install]
       [-visual   visual]   [-delay  seconds]  [-random  boolean]
       [-ncolors int] [-offset int]

DESCRIPTION
       The moire program draws cool  circular  interference  pat-
       terns.

OPTIONS
       moire 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.

       -delay seconds
               How  long to wait before starting over.  Default 5
               seconds.

       -random boolean
               Whether to ignore the  foreground/background  col-
               ors, and pick them randomly instead.

       -offset integer
               The maximum random radius increment to use.

       -ncolors integer
               How  many  colors should be allocated in the color
               ramp (note that this value interacts with offset.)

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_MAN-
               AGER property.

SEE ALSO
       X(1) xscreensaver(1) 

COPYRIGHT
       Copyright  (C) 1997 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  lt;jwz@netscape.com,  27-Apr-97,  based on
       code by Michael D. Bayne lt;mdb@go2net.com.