nerverot
Section: XScreenSaver manual (6)
Updated: 5.40 (12-Aug-2018)
Page Index
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]
[-fps]
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 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(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.
- -fps
-
Display the current frame rate and CPU load.
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 © 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>.