Provided by: xscreensaver-data-extra_5.07-0ubuntu3_i386
rocks - animation of flying through an asteroid field
rocks [-display host:display.screen] [-foreground color] [-background
color] [-window] [-root] [-mono] [-ncolors n] [-install] [-visual
visual] [-count integer] [-delay usecs] [-speed integer] [-norotate]
[-nomove] [-3d] [-fps]
The rocks program draws an animation of an asteroid field moving past
the observer (or vice versa). Sometimes the observer picks up spin on
rocks accepts the following options:
-window Draw on a newly-created window. This is the default.
-root Draw on the root window.
-mono Make all the rocks the same color.
How many different colors to use. Default 5. Colors are
Install a private colormap for the window.
Specify which visual to use. Legal values are the name of a
visual class, or the id number (decimal or hex) of a specific
Maximum number of rocks to draw on the screen at once. Default
A measure of the speed with which the observer and the rocks
pass each other, from 1 to 100. Default 100, meaning ‘‘very
fast.’’ If you’re on a slow display connection (the animation
looks jerky) then try making this number smaller, and/or
decreasing the number of rocks.
Number of microseconds to delay between each frame. Default
50000, meaning about 1/20th second. Compare and contrast with
Don’t rotate the observer; just fly through the field on the
-nomove Don’t turn the observer; just fly straight ahead through the
-3d Do red/blue 3d separations: if you look at the screen with 3d
glasses, the rocks will be jumping right out at you. Oooooh,
-fps Display the current frame rate and CPU load.
DISPLAY to get the default host and display number.
to get the name of a resource file that overrides the global
resources stored in the RESOURCE_MANAGER property.
There should be an option to display doppler shift (a gravity rainbow.)
Speed of rotation should be settable.
Default speed of rotation should be relative to forward velocity.
Copyright © 1992 by Jamie Zawinski. Permission to use, copy, modify,
distribute, and sell this software and its documentation for any
purpose is hereby granted without fee, provided that the above
copyright notice appear in all copies and that both that copyright
notice and this permission notice appear in supporting documentation.
No representations are made about the suitability of this software for
any purpose. It is provided "as is" without express or implied
Based on Lisp Machine code copyright 1988 John Nguyen
Ported to C and X by Jamie Zawinski <firstname.lastname@example.org>, 13-aug-92.
Steering code by Jeremie Petit; 3D code by email@example.com.