redhat man page for julia

XScreenSaver(1) 					      General Commands Manual						   XScreenSaver(1)

NAME
       julia - draws spinning, animating julia-set fractals

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

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.

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

       -mouse

       -nomouse
	       If -mouse is specified, the control point of the Julia set will be derived from the position of the mouse in the window.  When  the
	       mouse is not in the window, the control point is chosen the normal way.

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, pro-
       vided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice  appear  in  sup-
       porting 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							     28-May-97							   XScreenSaver(1)