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.