NAME

       flow - strange attractors.

SYNOPSIS

       flow  [-display  host:display.screen] [-visual visual] [-window] [-root] [-count number] [-cycles number]
       [-periodic|-no-periodic]  [-search|-no-search]   [-rotate|-no-rotate]   [-ride|-no-ride]   [-box|-no-box]
       [-dbuf|-no-dbuf] [-ncolors number] [-delay number] [-fps]

DESCRIPTION

       Strange  attractors  formed  of  flows  in  a 3D differential equation phase space.  Features the popular
       attractors described by Lorentz, Roessler, Birkhoff and Duffing, and can discover entirely new attractors
       by itself.

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.

       -count number
               Number of particles in the flow.  Default: 3000

       -size number
               Length  of  particle  trails.   Negative values indicate randomness.  The computational load of a
               given flow depends on (particle count) * (trail length).  Default: -10

       -cycles number
               Timeout before changing objects.  0 - 800000.  Default: 10000.

       -periodic

       -no-periodic
               turn on/off periodic attractors.  These are flows in  2  dependent  variables,  with  a  periodic
               dependence  on  a  third independent variable (eg time).  Flow will sometimes choose to start all
               the particles in the same phase to illustrate the flow's cross-section.  Default: on

       -search

       -no-search
               turn on/off search for new attractors.  If this is enabled, a fraction of the computing cycles is
               directed to searching a 60-dimensional parameter space for new strange attractors.   If  periodic
               flows  are  enabled,  these  can  be searched too.  Watch carefully - you are quite likely to see
               mathematical objects that have never been seen before, and since the parameters are not recorded,
               you'll probably never see them again!  Default: on

       -rotate

       -no-rotate
               turn on/off rotating around attractor.  Default: on

       -ride

       -no-ride
               turn on/off ride in the flow.  Default: on

               If both -rotate and -ride are enabled the viewpoint will occasionally fly between the two views.

       -box

       -no-box turn on/off bounding box.  Default: on

       -dbuf

       -no-dbuf
               turn on/off double buffering.  If Flow runs slowly in full screen, but fast in a  smaller  window
               (eg on old graphics cards with too little memory), try turning this option off.  Default: on

       -ncolors number
               Number of Colors.  Default: 200.

       -delay number
               Per-frame delay, in microseconds.  Default: 10000 (0.01 seconds.).

       -fps    Display the current frame rate and CPU load.

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) 1996 by Tim Auckland <Tim.Auckland@Procket.com> Incorporating some code from Stephen Davies
       Copyright (c) 2000

       Search code based on techniques described in "Strange Attractors: Creating Patterns in Chaos"  by  Julien
       C. Sprott

       Permission  to  use, copy, modify, and distribute this software and its documentation for any purpose and
       without fee is hereby granted, provided that the above copyright notice appear in  all  copies  and  that
       both that copyright notice and this permission notice appear in supporting documentation.

       This  file  is  provided  AS  IS with no warranties of any kind.  The author shall have no liability with
       respect to the infringement of copyrights, trade secrets or any patents by this file or any part thereof.
       In no event will the author be liable for any lost revenue or profits  or  other  special,  indirect  and
       consequential damages.

       Adapted from swarm.c Copyright (c) 1991 by Patrick J. Naughton.

       Adapted from xswarm by Jeff Butterworth. (butterwo@ncsc.org).

AUTHOR

       Tim Auckland

X Version 11                                   5.45 (08-Dec-2020)                                       flow(6x)