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 © 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.