DragonFly On-Line Manual Pages
nerverot(6) XScreenSaver manual nerverot(6)
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 (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,
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>.
X Version 11 5.34 (24-Oct-2015) nerverot(6)