grav(6x) XScreenSaver manual grav(6x)
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]
[-fps]
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 64. The
colors are chosen randomly.
-count integer
Default 12.
-decay
-no-decay
Whether orbits should decay.
-trail
-no-trail
Whether the objects should leave trails behind them (makes it
look vaguely like a cloud-chamber.
-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
resources stored in the RESOURCE_MANAGER property.
SEE ALSO
X(1), xscreensaver(1), xlock(1)
COPYRIGHT
Copyright © 1993 by Greg Bowering.
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
Greg Bowering <gb@pobox.com>, 1993.
Ability to run standalone or with xscreensaver added by Jamie Zawinski
<jwz@jwz.org>, 10-May-97.
X Version 11 5.45 (08-Dec-2020) grav(6x)
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