1unknownpleasures(6x) XScreenSaver manual unknownpleasures(6x)
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6 unknownpleasures - a waterfall graph of the signal from pulsar PSR
7 B1919+21.
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10 unknownpleasures [-display host:display.screen] [-visual visual] [-win‐
11 dow] [-root] [-delay number] [-count number] [-speed number] [-resolu‐
12 tion number] [-amplitude number] [-noise number] [-mask file] [-no-or‐
13 tho] [-buzz] [-wireframe] [-fps]
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16 PSR B1919+21 (AKA CP 1919) was the first pulsar ever discovered: a
17 spinning neutron star emitting a periodic lighthouse-like beacon. An
18 illustration of the signal received from it was published in Scientific
19 American in 1971, and later in The Cambridge Encyclopedia of Astronomy
20 in 1977, where it was seen by Stephen Morris, the drummer of Joy Divi‐
21 sion, and was consequently appropriated by Peter Saville for the cover
22 of the band's album "Unknown Pleasures".
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25 -visual visual
26 Specify which visual to use. Legal values are the name of a
27 visual class, or the id number (decimal or hex) of a specific
28 visual.
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30 -window Draw on a newly-created window. This is the default.
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32 -root Draw on the root window.
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34 -delay number
35 Per-frame delay, in microseconds. Default: 30000 (0.03 sec‐
36 onds).
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38 -speed number
39 Animation speed. 2 for twice as fast, 0.5 for half as fast.
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41 -count number
42 Scanlines (vertical resolution). Default: 80.
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44 -resolution number
45 Horizontal Resolution, Default: 100.
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47 -amplitude number
48 Height of the waves, 0 - 1.0. Default: 0.13.
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50 -noise number
51 How noisy the signal is. 2 for twice as noisy, 0.5 for half as
52 noisy.
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54 -mask file
55 Use the given image file as a clipping mask against the data.
56 A high contrast image of around 256x256 works best. Signal
57 peaks appear in the dark areas.
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59 -ortho | -no-ortho
60 Whether to use an orthographic projection.
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62 -buzz | -no-buzz
63 Whether each line should seethe with noise.
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65 -wireframe | -no-wireframe
66 Render in wireframe instead of solid.
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68 -fps | -no-fps
69 Whether to show a frames-per-second display at the bottom of
70 the screen.
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73 DISPLAY to get the default host and display number.
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75 XENVIRONMENT
76 to get the name of a resource file that overrides the global
77 resources stored in the RESOURCE_MANAGER property.
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80 X(1), xscreensaver(1)
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83 Copyright © 2013-2018 by Jamie Zawinski. Permission to use, copy, mod‐
84 ify, distribute, and sell this software and its documentation for any
85 purpose is hereby granted without fee, provided that the above copy‐
86 right notice appear in all copies and that both that copyright notice
87 and this permission notice appear in supporting documentation. No rep‐
88 resentations are made about the suitability of this software for any
89 purpose. It is provided "as is" without express or implied warranty.
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92 Jamie Zawinski.
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96X Version 11 6.02-4.fc35 (09-Nov-2021) unknownpleasures(6x)