1flow(6x) XScreenSaver manual flow(6x)
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6 flow - strange attractors.
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9 flow [--display host:display.screen] [--visual visual] [--window]
10 [--root] [--window-id number] [--count number] [--cycles number] [--pe‐
11 riodic|--no-periodic] [--search|--no-search] [--rotate|--no-rotate]
12 [--ride|--no-ride] [--box|--no-box] [--dbuf|--no-dbuf] [--ncolors num‐
13 ber] [--delay number] [--fps]
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16 Strange attractors formed of flows in a 3D differential equation phase
17 space. Features the popular attractors described by Lorentz, Roessler,
18 Birkhoff and Duffing, and can discover entirely new attractors by it‐
19 self.
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22 --visual visual
23 Specify which visual to use. Legal values are the name of a
24 visual class, or the id number (decimal or hex) of a specific
25 visual.
26 --window
28 Draw on a newly-created window. This is the default.
29 --root Draw on the root window.
31 --window-id number
33 Draw on the specified window.
34 --count number
36 Number of particles in the flow. Default: 3000
37 --size number
39 Length of particle trails. Negative values indicate random‐
40 ness. The computational load of a given flow depends on (par‐
41 ticle count) * (trail length). Default: -10
42 --cycles number
44 Timeout before changing objects. 0 - 800000. Default: 10000.
45 --periodic
47 --no-periodic
49 turn on/off periodic attractors. These are flows in 2 depen‐
50 dent variables, with a periodic dependence on a third indepen‐
51 dent variable (eg time). Flow will sometimes choose to start
52 all the particles in the same phase to illustrate the flow's
53 cross-section. Default: on
54 --search
56 --no-search
58 turn on/off search for new attractors. If this is enabled, a
59 fraction of the computing cycles is directed to searching a
60 60-dimensional parameter space for new strange attractors. If
61 periodic flows are enabled, these can be searched too. Watch
62 carefully - you are quite likely to see mathematical objects
63 that have never been seen before, and since the parameters are
64 not recorded, you'll probably never see them again! Default:
65 on
66 --rotate
68 --no-rotate
70 turn on/off rotating around attractor. Default: on
71 --ride
73 --no-ride
75 turn on/off ride in the flow. Default: on
76 If both -rotate and -ride are enabled the viewpoint will occa‐
78 sionally fly between the two views.
79 --box
81 --no-box
83 turn on/off bounding box. Default: on
84 --dbuf
86 --no-dbuf
88 turn on/off double buffering. If Flow runs slowly in full
89 screen, but fast in a smaller window (eg on old graphics cards
90 with too little memory), try turning this option off. Default:
91 on
92 --ncolors number
94 Number of Colors. Default: 200.
95 --delay number
97 Per-frame delay, in microseconds. Default: 10000 (0.01 sec‐
98 onds.).
99 --fps Display the current frame rate and CPU load.
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103 DISPLAY to get the default host and display number.
104 XENVIRONMENT
106 to get the name of a resource file that overrides the global
107 resources stored in the RESOURCE_MANAGER property.
108 XSCREENSAVER_WINDOW
110 The window ID to use with --root.
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113 X(1), xscreensaver(1)
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116 Copyright (c) 1996 by Tim Auckland <Tim.Auckland@Procket.com> Incorpo‐
117 rating some code from Stephen Davies Copyright (c) 2000
118 Search code based on techniques described in "Strange Attractors: Cre‐
120 ating Patterns in Chaos" by Julien C. Sprott
121 Permission to use, copy, modify, and distribute this software and its
123 documentation for any purpose and without fee is hereby granted, pro‐
124 vided that the above copyright notice appear in all copies and that
125 both that copyright notice and this permission notice appear in sup‐
126 porting documentation.
127 This file is provided AS IS with no warranties of any kind. The author
129 shall have no liability with respect to the infringement of copyrights,
130 trade secrets or any patents by this file or any part thereof. In no
131 event will the author be liable for any lost revenue or profits or
132 other special, indirect and consequential damages.
133 Adapted from swarm.c Copyright (c) 1991 by Patrick J. Naughton.
135 Adapted from xswarm by Jeff Butterworth. (butterwo@ncsc.org).
137
139 Tim Auckland
140X Version 11 6.08-1.fc39 (17-Oct-2023) flow(6x)