Provided by: xscreensaver-data-extra_5.34-2ubuntu1_amd64 bug


       nerverot - induces edginess in the viewer


       nerverot  [-display host:display.screen] [-foreground color] [-background color] [-window]
       [-root] [-mono] [-install] [-visual  visual]  [-db]  [-no-db]  [-colors  integer]  [-delay
       microseconds]  [-count  integer] [-line-width integer] [-event-chance fraction] [-iter-amt
       fraction]  [-nervousness  fraction]  [-max-nerve-radius  fraction]  [-min-radius  integer]
       [-max-radius integer] [-min-scale fraction] [-max-scale fraction] [-fps]


       The  goal  of nerverot is to be interesting and compelling to watch, yet induce a state of
       nervous edginess in the viewer. This manpage describes v1.3 of the program.


       nerverot accepts the following options:

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

       -root   Draw on the root window.

       -mono   If on a color display, pretend we're on a monochrome display.

               Install a private colormap for the window.

       -visual visual
               Which visual to use.  Legal values are the name of  a  visual  class,  or  the  id
               number (decimal or hex) of a specific visual.

       -db     -no-db  Use  double-buffering  (or  not,  respectively). Double-buffering may make
               things look better for larger line widths and/or  larger  numbers  of  blots,  but
               "better"  may  equate  to  yielding less of the desired edginess effect. You'll be
               calmer after watching the double-buffered variant; you're more likely to  go  into
               epileptic  fits  with  it  off.  Hence,  it  is  off  (false) by default, resource

       -colors integer
               How many colors should be used (if  possible).  The  colors  form  a  smooth  ramp
               between two randomly-chosen colors. Defaults to 4, resource colors.

       -delay microseconds
               The interframe delay, in microseconds. Defaults to 10000, resource delay.

       -max-iters integer
               The  maximum  number  of  iterations (frames) before a new model is generated. The
               actual number of iterations per model is a random number between 1 and this value.
               Defaults to 1200, resource maxIters.

       -count integer
               How  many  "blots"  to  draw at a time. This number may be rounded down to fit the
               particularly chosen model, and has a fixed minimum per-model.   Defaults  to  250,
               resource count.

       -line-width integer
               The  width  of the lines to draw. 0 means an optimized pixel-thick line.  Defaults
               to 0, resource lineWidth.

       -event-chance fraction
               The chance, per iteration, for a life-altering event to occur (such as  picking  a
               new rotation target), in the range 0..1. Defaults to 0.2, resource eventChance.

       -iter-amt fraction
               The  fraction  of movement towards a target (such as rotation angle or scale) that
               happens per iteration, in the range 0..1. Defaults to 0.01, resource iterAmt.

       -nervousness fraction
               How nervous the drawing is, in the range 0..1. This is how  jumpy  the  points  on
               each blot are. Defaults to 0.3, resource nervousness.

       -max-nerve-radius fraction
               The  maximum  radius of blot nervousness, as a fraction of the radius of the blot,
               in the range 0..1. Defaults to 0.7, resource maxNerveRadius.

       -min-radius integer
               The minimum radius for a blot, in  the  range  1..100.  Defaults  to  3,  resource

       -max-radius integer
               The  maximum  radius  for  a  blot,  in the range 1..100. Defaults to 25, resource

       -min-scale fraction
               The    minimum    overall    scale    of    drawing,    as    a    fraction     of
               min(windowHeight,windowWidth),  in  the  range  0..10.  Defaults  to 0.6, resource

       -max-scale fraction
               The    maximum    overall    scale    of    drawing,    as    a    fraction     of
               min(windowHeight,windowWidth),  in  the  range  0..10.  Defaults to 1.75, resource

       -fps    Display the current frame rate and CPU load.


       DISPLAY to get the default host and display number.

               to get the name of a resource file that overrides the global resources  stored  in
               the RESOURCE_MANAGER property.


       There are resource equivalents for each option, noted above.


       nerverot should have more models.

       XDBE should be detected and used, if available.




       Copyright © 2000-2001 by Dan Bornstein. All rights reserved.

       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 notice 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.


       Dan Bornstein <>.