1 HOPALONG Draw real plane fractals SYNOPSIS $ hopalong [-display host:display.screen] [-foreground color] [-background color] [-window] [-root] [-mono] [-count integer] [-ncolors integer] [-timeout seconds] [-delay microseconds] 2 DESCRIPTION The hopalong program generates real plane fractals as described in the September 1986 issue of Scientific American. 2 OPTIONS hopalong 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. -count integer How many pixels should be drawn before a color change. Default 1000. -ncolors integer How many colors should be used (if possible). Default 100. The colors used cycle through the hue, making N stops around the color wheel. -timeout seconds How many seconds we should generate for before clearing the screen and starting over. Default 20. -delay microseconds How long we should wait between drawing each pixel. Default 0. 2 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. 2 COPYRIGHT Copyright (co 1988-91 by Patrick J. Naughton 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. 2 AUTHOR Patrick J. Naughton , 23-mar-88. Ability to run standalone or with xscreensaver added by Jamie Zawinski , 13-aug-92.