XScreenSaver(1)                                                XScreenSaver(1)


       nerverot - induces edginess in the viewer


       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]


       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 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

       -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

       -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.


       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, 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.


       Dan Bornstein <>.

X Version 11                      20-Mar-2001                  XScreenSaver(1)

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