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] [--window-id number][--mono] [--install] [--vi- sual 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 in- teresting as it could, but it still gives an idea of the effect of the pa- rameter. 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. --window-id number Draw on the specified 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 re- sources stored in the RESOURCE_MANAGER property. XSCREENSAVER_WINDOW The window ID to use with --root. 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 docu- mentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copy- right 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 6.15 (30-Mar-2026) julia(6)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | SEE ALSO | COPYRIGHT | AUTHOR
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=julia&sektion=6&manpath=FreeBSD+Ports+15.1.quarterly>