1rocks(6x) XScreenSaver manual rocks(6x)
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6 rocks - animation of flying through an asteroid field
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9 rocks [--display host:display.screen] [--foreground color] [--back‐
10 ground color] [--window] [--root] [--window-id number][--mono] [--ncol‐
11 ors n] [--install] [--visual visual] [--count integer] [--delay usecs]
12 [--speed integer] [--norotate] [--nomove] [-3d] [--fps]
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15 The rocks program draws an animation of an asteroid field moving past
16 the observer (or vice versa). Sometimes the observer picks up spin on
17 Z axis.
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20 rocks accepts the following options:
21 --window
23 Draw on a newly-created window. This is the default.
24 --root Draw on the root window.
26 --window-id number
28 Draw on the specified window.
29 --mono Make all the rocks the same color.
31 --ncolors colors
33 How many different colors to use. Default 5. Colors are cho‐
34 sen randomly.
35 --install
37 Install a private colormap for the window.
38 --visual visual
40 Specify which visual to use. Legal values are the name of a
41 visual class, or the id number (decimal or hex) of a specific
42 visual.
43 --count integer
45 Maximum number of rocks to draw on the screen at once. Default
46 100.
47 --speed integer
49 A measure of the speed with which the observer and the rocks
50 pass each other, from 1 to 100. Default 100, meaning ``very
51 fast.'' If you're on a slow display connection (the animation
52 looks jerky) then try making this number smaller, and/or de‐
53 creasing the number of rocks.
54 --delay microseconds
56 Number of microseconds to delay between each frame. Default
57 50000, meaning about 1/20th second. Compare and contrast with
58 --speed, above.
59 --norotate
61 Don't rotate the observer; just fly through the field on the
62 level.
63 --nomove
65 Don't turn the observer; just fly straight ahead through the
66 field.
67 -3d Do red/blue 3d separations: if you look at the screen with 3d
69 glasses, the rocks will be jumping right out at you. Oooooh,
70 scaaary!
71 --fps Display the current frame rate and CPU load.
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75 DISPLAY to get the default host and display number.
76 XENVIRONMENT
78 to get the name of a resource file that overrides the global
79 resources stored in the RESOURCE_MANAGER property.
80 XSCREENSAVER_WINDOW
82 The window ID to use with --root.
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85 X(1), xscreensaver(1)
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88 There should be an option to display doppler shift (a gravity rainbow.)
89 Speed of rotation should be settable.
91 Default speed of rotation should be relative to forward velocity.
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95 Copyright © 1992 by Jamie Zawinski. Permission to use, copy, modify,
96 distribute, and sell this software and its documentation for any pur‐
97 pose is hereby granted without fee, provided that the above copyright
98 notice appear in all copies and that both that copyright notice and
99 this permission notice appear in supporting documentation. No repre‐
100 sentations are made about the suitability of this software for any pur‐
101 pose. It is provided "as is" without express or implied warranty.
102
104 Based on Lisp Machine code copyright 1988 John Nguyen
105 <johnn@hx.lcs.mit.edu>.
106 Ported to C and X by Jamie Zawinski <jwz@jwz.org>, 13-aug-92.
108 Steering code by Jeremie Petit; 3D code by theiling@coli.uni-sb.de.
110X Version 11 6.08-1.fc39 (17-Oct-2023) rocks(6x)