1julia(6x)                     XScreenSaver manual                    julia(6x)
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NAME

6       julia - draws spinning, animating julia-set fractals
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SYNOPSIS

9       julia  [--display  host:display.screen]  [--foreground  color] [--back‐
10       ground color] [--window] [--root] [--window-id  number][--mono]  [--in‐
11       stall]  [--visual  visual]  [--ncolors  integer] [--delay microseconds]
12       [--cycles integer] [--count integer]
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14       [--fps]
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DESCRIPTION

17       The julia program draws spinning, animating julia-set fractals.
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19       It uses ifs {w0 = sqrt(x-c), w1 = -sqrt(x-c)} with random iteration  to
20       plot  the  julia  set, and sinusoidially varied parameters for the set,
21       and plots parameters with a circle.
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23       One thing to note is that count is the depth of the search tree, so the
24       number  of points computed is (2^count)-1.  I use 8 or 9 on a dx266 and
25       it looks okay.  The sinusoidal variation of the parameter might not  be
26       as interesting as it could, but it still gives an idea of the effect of
27       the parameter.
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29       Dragging the mouse in the window uses the mouse's position as the  con‐
30       trol point for the generation of ths set.
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OPTIONS

33       julia accepts the following options:
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35       --window
36               Draw on a newly-created window.  This is the default.
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38       --root  Draw on the root window.
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40       --window-id number
41               Draw on the specified window.
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43       --mono  If on a color display, pretend we're on a monochrome display.
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45       --install
46               Install a private colormap for the window.
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48       --visual visual
49               Specify  which  visual  to use.  Legal values are the name of a
50               visual class, or the id number (decimal or hex) of  a  specific
51               visual.
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53       --ncolors integer
54               How  many  colors  should  be used (if possible).  Default 200.
55               The colors used cycle through the hue, making  N  stops  around
56               the color wheel.
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58       --cycles integer
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61       --count integer
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63       --fps   Display the current frame rate and CPU load.
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ENVIRONMENT

66       DISPLAY to get the default host and display number.
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68       XENVIRONMENT
69               to  get  the  name of a resource file that overrides the global
70               resources stored in the RESOURCE_MANAGER property.
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72       XSCREENSAVER_WINDOW
73               The window ID to use with --root.
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SEE ALSO

76       X(1), xscreensaver(1), xlock(1)
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79       Copyright © 1995 by Sean McCullough.
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81       Permission to use, copy, modify, and distribute this software  and  its
82       documentation  for  any purpose and without fee is hereby granted, pro‐
83       vided that the above copyright notice appear in  all  copies  and  that
84       both  that  copyright  notice and this permission notice appear in sup‐
85       porting documentation.
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AUTHOR

88       Sean McCullough <bankshot@mailhost.nmt.edu>, 1995.
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90       Ability to run standalone or with xscreensaver added by Jamie  Zawinski
91       <jwz@jwz.org>, 10-May-97.
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95X Version 11               6.08-1.fc39 (17-Oct-2023)                 julia(6x)
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