DISPLAY
to get the default host and display number.
grav6
Draws a simple orbital simulation
Usage
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]
Overview
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
-
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.