xscreensaver(1)
NAME
grav - draws a simple orbital simulation
SYNOPSIS
grav [-display host:display.screen] [-foreground color] [-background color] [-window] [-root] [-mono] [-install] [-visual visual] [-ncolors integer] [-delay microseconds] [-count integer] [-decay] [-no-decay] [-trail] [-no-trail]
DESCRIPTION
The grav program draws a simple orbital simulation
OPTIONS
grav 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 are chosen randomly. - -count integer
- Default 12.
- -decay
- -no-ecay
- Whether orbits should decay.
- -trail
- -no-trail
- Whether the objects should leave trails behind
them (makes it look vaguely like a cloud-chamber.
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_MAN
AGER property.
SEE ALSO
X(1), xscreensaver(1), xlock(1)
COPYRIGHT
Copyright © 1993 by Greg Bowering.
Permission to use, copy, modify, and distribute this soft
ware 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
Greg Bowering <gb@pobox.com>, 1993.
- Ability to run standalone or with xscreensaver added by
Jamie Zawinski <jwz@jwz.org>, 10-May-97.