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       cube21 - animates the Cube 21 puzzle


       cube21   [-display   host:display.screen]  [-visual  visual]  [-window]
       [-root]  [-install]  [-delay  microseconds]  [-texture]   [-no-texture]
       [-mono]   [-wireframe]   [-spin]   [-no-spin]   [-wander]  [-no-wander]
       [-randomize] [-no-randomize]  [-spinspeed  number]  [-rotspeed  number]
       [-wanderspeed  number]  [-wait  number]  [-cubesize number] [-colormode
       arg] [-fps]


       This program animates a puzzle known as Cube 21 or Square-1.  Its moves
       are chosen randomly.

       Cube  21 is a Rubik-like puzzle invented in 1992.  Its specialities are
       that it can change its shape and even the number of possible moves.  It
       can  have  more  than  200  different  shapes  and  the total number of
       configurations (assuming colors) is several tens of billions.


       cube21 accepts the following options:

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

       -root   Draw on the root window.

               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

       -delay microseconds
               How long to pause between frames.  Default is  20000,  or  0.02

               Use texture maps.  This is the default.

               Use solid colors.

       -mono   Disable both texture maps and colors.

               Only draw outlines.  Outlines of all pieces, not only the whole
               object, are drawn.

       -spin   Spin the whole object around X, Y and  Z  axes.   This  is  the

               Do not spin, showing the same three faces all the time.

       -wander Move the object around the screen.  This is the default.

               Keep the object centered on the screen.

               Shuffle the puzzle randomly at startup.  This is the default.

               Do not shuffle at startup, begin at the shape of cube.

       -spinspeed number
               The relative speed of spinning.  Default is 1.0.

       -rotspeed number
               The relative speed of the moves.  Default is 3.0.  Setting to ≤
               0.0 makes the object stay at one configuration.

       -wanderspeed number
               The relative speed of wandering around the screen.  Default  is

       -wait number
               How  long  to  stay  at  ending  position after each move.  The
               meaning of the argument is again relative.  Default is 40.0.

       -cubesize number
               Size of the object.  Value of 3.0 fills roughly all the  screen
               (its height).  Default is 0.7.

       -colormode argument
               How  many  and which colors should the object have.  The colors
               are put on the piece faces so that the puzzle is solvable.  The
               inner faces are not influenced.

               se or silver
                       Simulate  the  "Silver  Edition" - white and one random

               2 or two
                       Two random colors.

               ce or classic
                       Simulate the "Classic Edition" - white, yellow, orange,
                       red, green and blue.

               6 or six
                       Six random colors.

               1 or random or rnd
                       One random color.

               Anything else
                       All faces white.

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


       DISPLAY to get the default host and display number.

               to  get  the  name of a resource file that overrides the global
               resources stored in the RESOURCE_MANAGER property.


       X(1), xscreensaver(1)


       Copyright © 2005 by Vaclav Potocek.  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


       Vaclav (Vasek) Potocek <>, 30-Aug-05.