qix(6) XScreenSaver manual qix(6)

NAME

qix - bounce colored lines around a window

SYNOPSIS

qix [--display host:display.screen] [--foreground color]
[--background color] [--window] [--root] [--window-id number][--mono]
[--install] [--visual visual] [--segments int] [--spread pixels]
[--size pixels] [--count int] [--color-shift degrees] [--delay usecs]
[--random] [--linear] [--solid] [--hollow] [--xor] [--no-xor]
[--transparent] [--non-transparent] [--additive] [--subtractive]
[--poly int] [--gravity] [--no-gravity] [--fps]

DESCRIPTION

The qix program bounces a series of line segments around its window.
This is truly the swiss army chainsaw of qix programs. If you know
of one with more display modes, I want to know about it.

OPTIONS

qix accepts the following options:

--window
Draw on a newly-created window. This is the default.

--root Draw on the root window.

--window-id number
Draw on the specified window.

--mono If on a color display, pretend we're on a monochrome display.

--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.

--segments integer
How many line segments should be drawn. Default 50.

--spread integer
How far apart the endpoints of one segment should be from the
next. Default 8.

--size integer
The maximum distance one endpoint of a segment is allowed to
be from the opposite end of that segment. Default 0, meaning
unlimited.

--count integer
How many qixes to draw. Default 1.

--color-shift degrees
If on a color display, the color of the line segments will
cycle through the spectrum. This specifies how far the hue
of each segment should be from the next, in degrees on the
HSV wheel. Default 3.

--delay microseconds
How much of a delay should be introduced between steps of the
animation. Default 10000, or about 0.01 seconds.

--random
The qix will wander around the screen semi-randomly. This is
the default.

--linear
The opposite of --random: the qix will travel in straight
lines until it reaches a wall, and then it will bounce.

--solid If this is specified, then the area between the line segments
will be filled in with the appropriate color, instead of the
qix simply being composed of one-pixel-wide line segments.
This option looks really good in color.

--hollow
The opposite of --solid; this is the default.

--xor If this is specified, then qix segments will be drawn and
erased with xor, instead of being drawn in some color and
erased in the background color. This implies --mono, in that
only two colors can be used.

--transparent
If this is specified, and --count is greater than 1, then
each qix will be drawn in one color, and when they overlap,
the colors will be mixed. This looks best in conjunction
with --solid.

--non-transparent
Turns off --transparent.

--additive
If --transparent is specified, then this option means that
the colors will be mixed using an additive color model, as if
the qixes were projected light. This is the default.

--subtractive
If --transparent is specified, then this option means that
the colors will be mixed using a subtractive color model, as
if the qixes were translucent filters.

--poly int
How many vertices each qix-line should have: the default is
2, meaning the traditional qix line shape. Three will yield
triangles, and so on.

--gravity

--no-gravity
Whether there should be downward attraction. For example,
the options --gravity --linear will make everything move in
nice smooth parabolas. Gravity is off by default.

--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.

XSCREENSAVER_WINDOW
The window ID to use with --root.

SEE ALSO

X(1), xscreensaver(1)

COPYRIGHT

Copyright (C) 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

Jamie Zawinski <jwz@jwz.org>, 13-aug-92.

Thanks to Ariel Scolnicov for the --poly and --gravity options.

X Version 11 6.09 (07-Jun-2024) qix(6)