grav - Man Page

draws a simple orbital simulation

Synopsis

grav [--display host:display.screen] [--foreground color] [--background color] [--window] [--root] [--window-id number][--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.

--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 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.

XSCREENSAVER_WINDOW

The window ID to use with --root.

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

6.05-3.fc38 (06-Nov-2022) X Version 11 XScreenSaver manual