grav man page

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)

Author

Greg Bowering <gb@pobox.com>, 1993.

Ability to run standalone or with xscreensaver added by Jamie Zawinski <jwz@jwz.org>, 10-May-97.

Info

5.36-3.fc26 (21-Oct-2016) X Version 11 XScreenSaver manual