1 .TH XScreenSaver 1 "" "X Version 11"
3 flow - strange attractors.
6 [\-display \fIhost:display.screen\fP]
7 [\-visual \fIvisual\fP]
10 [\-count \fInumber\fP]
11 [\-cycles \fInumber\fP]
12 [\-periodic|\-no\-periodic]
13 [\-search|\-no\-search]
14 [\-rotate|\-no\-rotate]
18 [\-ncolors \fInumber\fP]
19 [\-delay \fInumber\fP]
21 Strange attractors formed of flows in a 3D differential equation phase
22 space. Features the popular attractors described by \fBLorentz\fP,
23 \fBRössler\fP, \fBBirkhoff\fP and \fBDuffing\fP, and can now discover
24 entirely new attractors by itself.
27 .B \-visual \fIvisual\fP
28 Specify which visual to use. Legal values are the name of a visual class,
29 or the id number (decimal or hex) of a specific visual.
32 Draw on a newly-created window. This is the default.
35 Draw on the root window.
37 .B \-count \fInumber\fP
38 Number of particles in the flow. Default: 3000
40 .B \-size \fInumber\fP
41 Length of particle trails. Negative values indicate
42 randomness. The computational load of a given flow depends on
43 (particle count) * (trail length). Default: -10
45 .B \-cycles \fInumber\fP
46 Timeout before changing objects. 0 - 800000. Default: 10000.
51 turn on/off periodic attractors. These are flows in 2 dependent
52 variables, with a periodic dependence on a third independent variable
53 (eg time). Flow will sometimes choose to start all the particles in
54 the same phase to illustrate the flow's cross-section. Default:
60 turn on/off search for new attractors. If this is enabled, a fraction
61 of the computing cycles is directed to searching a 60-dimensional
62 parameter space for new strange attractors. If periodic flows are
63 enabled, these can be searched too. Watch carefully - you are quite
64 likely to see mathematical objects that have never been seen before,
65 and since the parameters are not recorded, you'll probably never see
66 them again! Default: on
71 turn on/off rotating around attractor. Default: on
76 turn on/off ride in the flow. Default: on
78 If both -rotate and -ride are enabled the viewpoint will occasionally
79 fly between the two views.
84 turn on/off bounding box. Default: on
89 turn on/off double buffering. If Flow runs slowly in full screen, but
90 fast in a smaller window (eg on old graphics cards with too little
91 memory), try turning this option off. Default: on
93 .B \-ncolors \fInumber\fP
94 Number of Colors. Default: 200.
96 .B \-delay \fInumber\fP
97 Per-frame delay, in microseconds. Default: 10000 (0.01 seconds.).
102 to get the default host and display number.
105 to get the name of a resource file that overrides the global resources
106 stored in the RESOURCE_MANAGER property.
111 Copyright (c) 1996 by Tim Auckland <Tim.Auckland@Procket.com>
112 Incorporating some code from Stephen Davies Copyright (c) 2000
114 Search code based on techniques described in "Strange Attractors:
115 Creating Patterns in Chaos" by Julien C. Sprott
117 Permission to use, copy, modify, and distribute this software and its
118 documentation for any purpose and without fee is hereby granted,
119 provided that the above copyright notice appear in all copies and that
120 both that copyright notice and this permission notice appear in
121 supporting documentation.
123 This file is provided AS IS with no warranties of any kind. The author
124 shall have no liability with respect to the infringement of copyrights,
125 trade secrets or any patents by this file or any part thereof. In no
126 event will the author be liable for any lost revenue or profits or
127 other special, indirect and consequential damages.
129 Adapted from swarm.c Copyright (c) 1991 by Patrick J. Naughton.
131 Adapted from xswarm by Jeff Butterworth. (butterwo@ncsc.org).