Provided by: xscreensaver-data-extra_5.08-0ubuntu3_i386 bug


        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.
        -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 (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.


        Dan Bornstein <>.