---
name: "nerverot"
section: "1"
platform: "linux"
package: "xscreensaver"
version: "3.34-3"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/nerverot"
---

# nerverot(1)

induces edginess in the viewer

## NAME

nerverot - induces edginess in the viewer

## SYNOPSIS

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

## 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 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 *terAmt*.

- **-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(windowHeight,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(windowHeight,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)](/xscreensaver/1.md)

## COPYRIGHT

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.

## AUTHOR

Dan Bornstein \<danfuzz@milk.com\>.