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unknownpleasures(6)	      XScreenSaver manual	   unknownpleasures(6)

NAME
       unknownpleasures	 -  a  waterfall  graph	 of the	signal from pulsar PSR
       B1919+21.

SYNOPSIS
       unknownpleasures	[-display host:display.screen] [-visual	visual]	[-win-
       dow]  [-root] [-delay number] [-count number] [-speed number] [-resolu-
       tion number] [-amplitude	number]	[-noise	number]	[-mask file]  [-no-or-
       tho] [-buzz] [-wireframe] [-fps]

DESCRIPTION
       PSR  B1919+21  (AKA  CP	1919)  was the first pulsar ever discovered: a
       spinning	neutron	star emitting a	periodic  lighthouse-like  beacon.  An
       illustration of the signal received from	it was published in Scientific
       American	in 1971, and later in The Cambridge Encyclopedia of  Astronomy
       in  1977, where it was seen by Stephen Morris, the drummer of Joy Divi-
       sion, and was consequently appropriated by Peter	Saville	for the	 cover
       of the band's album "Unknown Pleasures".

OPTIONS
       -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.

       -window Draw on a newly-created window.	This is	the default.

       -root   Draw on the root	window.

       -delay number
	       Per-frame  delay,  in  microseconds.  Default: 30000 (0.03 sec-
	       onds).

       -speed number
	       Animation speed.	2 for twice as fast, 0.5 for half as fast.

       -count number
	       Scanlines (vertical resolution).	 Default: 80.

       -resolution number
	       Horizontal Resolution, Default: 100.

       -amplitude number
	       Height of the waves, 0 -	1.0.  Default: 0.13.

       -noise number
	       How noisy the signal is.	2 for twice as noisy, 0.5 for half  as
	       noisy.

       -mask file
	       Use  the	 given image file as a clipping	mask against the data.
	       A high contrast image of	around	256x256	 works	best.	Signal
	       peaks appear in the dark	areas.

       -ortho |	-no-ortho
	       Whether to use an orthographic projection.

       -buzz | -no-buzz
	       Whether each line should	seethe with noise.

       -wireframe | -no-wireframe
	       Render in wireframe instead of solid.

       -fps | -no-fps
	       Whether	to  show  a frames-per-second display at the bottom of
	       the screen.

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.

SEE ALSO
       X(1), xscreensaver(1)

COPYRIGHT
       Copyright  (C)  2013-2018  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  no-
       tice 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 warranty.

AUTHOR
       Jamie Zawinski.

X Version 11		      5.44 (20-Mar-2020)	   unknownpleasures(6)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | SEE ALSO | COPYRIGHT | AUTHOR

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