1twang(6x)                     XScreenSaver manual                    twang(6x)
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NAME

6       twang - pluck pieces of the screen
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SYNOPSIS

9       twang  [-display  host:display.screen] [-foreground color] [-background
10       color] [-window] [-root] [-mono]  [-install]  [-visual  visual]  [-shm]
11       [-no-shm]  [-delay usecs] [-duration secs] [-border-color color] [-bor‐
12       der-width  integer]  [-event-chance  fraction]   [-friction   fraction]
13       [-springiness  fraction]  [-tile-size integer] [-transference fraction]
14       [-fps]
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DESCRIPTION

17       Twang divides the screen into equal-sized tiles, and then  plucks  them
18       in various ways. Tiles are affected by their neighbors, so waves of mo‐
19       tion flow through the grid. This manpage describes v1.3 of the program.
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OPTIONS

22       twang accepts the following options:
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24       -window Draw on a newly-created window.  This is the default.
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26       -root   Draw on the root window.
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28       -mono   If on a color display, pretend we're on a monochrome display.
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30       -install
31               Install a private colormap for the window.
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33       -visual visual
34               Which visual to use.  Legal values are the  name  of  a  visual
35               class, or the id number (decimal or hex) of a specific visual.
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37       -shm
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39       -no-shm Use  the  shared  memory  extension  (or not, respectively), if
40               available.  This may speed things up a bit, but probably  won't
41               make  that much difference. If available, defaults to true, re‐
42               source useSHM.
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44       -delay microseconds
45               The interframe delay, in microseconds. Defaults to  10000,  re‐
46               source delay.
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48       -duration seconds
49               How  long  to run before loading a new image.  Default 120 sec‐
50               onds.
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52       -border-color color
53               Color of the border surrounding each tile.  Defaults  to  blue,
54               resource borderColor.
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56       -border-width integer
57               Width  of  the border surrounding each tile. Defaults to 3, re‐
58               source borderWidth.
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60       -event-chance fraction
61               The chance, per iteration, for  an  event  to  occur  (such  as
62               tweaking  the  orientation  of  a tile), in the range 0..1. De‐
63               faults to 0.01, resource eventChance.
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65       -friction fraction
66               How much friction there is in the system, in  the  range  0..1.
67               This  is  the  amount by which velocities are damped per itera‐
68               tion.  Defaults to 0.05, resource friction.
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70       -springiness fraction
71               How springy the tiles are, in the  range  0..1.   This  is  the
72               fraction of an orientation that gets turned into a velocity to‐
73               wards the center (resting point).  Defaults  to  0.1,  resource
74               springiness.
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76       -tile-size integer
77               Size  (width  and height) of each tile, not including the outer
78               edge of the border. Defaults to 120, resource tileSize.
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80       -transference fraction
81               How much a tile's neighbors affect it, in the range 0..1.  This
82               is  the  fraction  of  an  orientation  of a neighbor that gets
83               turned into a velocity in the same direction Defaults to 0.025,
84               resource transference.
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86       -fps    Display the current frame rate and CPU load.
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ENVIRONMENT

89       DISPLAY to get the default host and display number.
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91       XENVIRONMENT
92               to  get  the  name of a resource file that overrides the global
93               resources stored in the RESOURCE_MANAGER property.
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X RESOURCES

96       There are resource equivalents for each option, noted above.
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BUGS

99       twang should have more interesting events.
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101       Ways of speeding it up need to be investigated. It's kinda sluggish,
102               especially on hugeass displays.
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SEE ALSO

105       xscreensaver(1)
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108       Copyright © 2002 by Dan Bornstein. All rights reserved.
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110       Permission to use, copy, modify, distribute, and sell this software and
111       its  documentation  for any purpose is hereby granted without fee, pro‐
112       vided that the above copyright notice appear in  all  copies  and  that
113       both  that  copyright  notice and this permission notice appear in sup‐
114       porting documentation. No representations are made about the  suitabil‐
115       ity  of  this  software for any purpose. It is provided "as is" without
116       express or implied warranty.
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AUTHOR

119       Dan Bornstein <danfuzz@milk.com>.
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123X Version 11               6.02-4.fc35 (09-Nov-2021)                 twang(6x)
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