NAME

       blocktube - draws a swirling, falling tunnel of reflective slabs

SYNOPSIS

       blocktube  [--display  host:display.screen]  [--visual  visual]  [--window] [--root] [--window-id number]
       [--delay number]  [--holdtime  number]  [--changetime  number]  [--no-texture]  [--no-fog]  [--wireframe]
       [--fps]

DESCRIPTION

       Blocktube draws a swirling, falling tunnel of reflective slabs. They fade from hue to hue.

OPTIONS

       --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.

       --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.

       --delay number
               Per-frame delay, in microseconds.  Default: 40000 (0.04 seconds.).

       --holdtime number
               How long to stay on the same color.  Default: 1000 frames.

       --changetime number
               How long it takes to fade to a new color.  Default: 200 frames.

       --no-texture
               Draw solid blocks intstead of reflective blocks.

       --no-fog
               Do not make blocks in the distance be darker.

       --wireframe
               Only draw outlines.

       --fps   Display the current frame rate, CPU load, and polygon count.

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  ©  2003  by Lars Damerow.  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

       Lars Damerow <lars@oddment.org>