XScreenSaver(1)XScreenSaver(1)NAMErocks - animation of flying through an asteroid field
SYNOPSISrocks [-display host:display.screen] [-foreground color]
[-background color] [-window] [-root] [-mono] [-ncolors n]
[-install] [-visual visual] [-count integer] [-delay
usecs] [-speed integer] [-norotate] [-nomove] [-3d]
DESCRIPTION
The rocks program draws an animation of an asteroid field
moving past the observer (or vice versa). Sometimes the
observer picks up spin on Z axis.
OPTIONSrocks accepts the following options:
-window Draw on a newly-created window. This is the
default.
-root Draw on the root window.
-mono Make all the rocks the same color.
-ncolors colors
How many different colors to use. Default 5.
Colors are chosen randomly.
-install
Install a private colormap for the window.
-visual visual
Specify which visual to use. Legal values are the
name of a visual class, or the id number (decimal
or hex) of a specific visual.
-count integer
Maximum number of rocks to draw on the screen at
once. Default 100.
-speed integer
A measure of the speed with which the observer and
the rocks pass each other, from 1 to 100. Default
100, meaning ``very fast.'' If you're on a slow
display connection (the animation looks jerky)
then try making this number smaller, and/or
decreasing the number of rocks.
-delay microseconds
Number of microseconds to delay between each
frame. Default 50000, meaning about 1/20th sec
ond. Compare and contrast with -speed, above.
-norotate
Don't rotate the observer; just fly through the
field on the level.
-nomove Don't turn the observer; just fly straight ahead
through the field.
-3d Do red/blue 3d separations: if you look at the
screen with 3d glasses, the rocks will be jumping
right out at you. Oooooh, scaaary!
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.
SEE ALSOX(1), xscreensaver(1)BUGS
There should be an option to display doppler shift (a
gravity rainbow.)
Speed of rotation should be settable.
Default speed of rotation should be relative to forward
velocity.
COPYRIGHT
Copyright 1992 by Jamie Zawinski. 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
Based on Lisp Machine code copyright 1988 John Nguyen
<johnn@hx.lcs.mit.edu>.
Ported to C and X by Jamie Zawinski <jwz@jwz.org>,
13-aug-92.
Steering code by Jeremie Petit; 3D code by theil
ing@coli.uni-sb.de.
X Version 11 13-aug-92 XScreenSaver(1)
