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XScreenSaver(6x)                                              XScreenSaver(6x)



NAME
       nerverot - induces edginess in the viewer

SYNOPSIS
       nerverot  [-display  host:display.screen]  [-foreground  color] [-back-
       ground 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 inte-
       ger] [-max-radius integer] [-min-scale fraction] [-max-scale fraction]

DESCRIPTION
       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.

OPTIONS
       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
               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 doubleBuffer.

       -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 ran-
               dom 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 min-
               imum 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 minRadius.

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

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

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

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.

X RESOURCES
       There are resource equivalents for each option, noted above.

BUGS
       nerverot should have more models.

       XDBE should be detected and used, if available.

SEE ALSO
       xscreensaver(1)

COPYRIGHT
       Copyright (C) 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,  pro-
       vided  that  the  above  copyright notice appear in all copies and that
       both that copyright notice and this permission notice  appear  in  sup-
       porting  documentation. No representations are made about the suitabil-
       ity of this software for any purpose. It is provided  "as  is"  without
       express or implied warranty.

AUTHOR
       Dan Bornstein <danfuzzATmilk.com>.



X Version 11                  4.21 (01-Mar-2005)              XScreenSaver(6x)