xscreensaver(1)
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 inte_ ger] [-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, respec
- tively). Double-buffering may make things look
better for larger line widths and/or larger num
bers 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 randomlychosen 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 iter
ations 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 opti
mized 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 itera
tion, 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 frac
tion 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 frac
tion 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 frac
tion 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_MAN
AGER 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
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 suit
ability of this software for any purpose. It is provided
"as is" without express or implied warranty.
AUTHOR
- Dan Bornstein <danfuzz@milk.com>.