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julia(6)                      XScreenSaver manual                     julia(6)

NAME
       julia - draws spinning, animating julia-set fractals

SYNOPSIS
       julia [-display host:display.screen] [-foreground color] [-background
       color] [-window] [-root] [-mono] [-install] [-visual visual] [-ncolors
       integer] [-delay microseconds] [-cycles integer] [-count integer]

       [-fps]

DESCRIPTION
       The julia program draws spinning, animating julia-set fractals.

       It uses ifs {w0 = sqrt(x-c), w1 = -sqrt(x-c)} with random iteration to
       plot the julia set, and sinusoidially varied parameters for the set,
       and plots parameters with a circle.

       One thing to note is that count is the depth of the search tree, so the
       number of points computed is (2^count)-1.  I use 8 or 9 on a dx266 and
       it looks okay.  The sinusoidal variation of the parameter might not be
       as interesting as it could, but it still gives an idea of the effect of
       the parameter.

       Dragging the mouse in the window uses the mouse's position as the
       control point for the generation of ths set.

OPTIONS
       julia 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.

       -ncolors integer
               How many colors should be used (if possible).  Default 200.
               The colors used cycle through the hue, making N stops around
               the color wheel.

       -cycles integer

       -count integer

       -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), xlock(1)

COPYRIGHT
       Copyright (C) 1995 by Sean McCullough.

       Permission to use, copy, modify, and distribute this software and its
       documentation for any purpose and without fee is hereby granted,
       provided that the above copyright notice appear in all copies and that
       both that copyright notice and this permission notice appear in
       supporting documentation.

AUTHOR
       Sean McCullough <bankshot@mailhost.nmt.edu>, 1995.

       Ability to run standalone or with xscreensaver added by Jamie Zawinski
       <jwz@jwz.org>, 10-May-97.

X Version 11                  5.34 (24-Oct-2015)                      julia(6)