Provided by: xscreensaver-gl-extra_5.08-0ubuntu3_i386 bug


        cubicgrid - rotating 3D lattice seen from inside


        cubicgrid  [-display  host:display.screen]  [-visual  visual] [-window]
        [-root] [-install] [-delay microseconds] [-mono] [-speed number] [-zoom
        number] [-ticks number] [-bigdots] [-fps]


        This  program  shows  the  view  of an observer located inside a set of
        points arranged to a 3D lattice.  As the lattice rotates, various view-
        throughs appear and evolve.  A simple idea with interesting results.


        cubicgrid 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
        -mono   Draw in black and white.  If not used, a fixed all-color scheme
                is chosen.
        -speed number
                The  maximum  speed of the rotation.  The actual speed and axis
                change smoothly for better effect.  0.5 - 10.  The  default  is
        -zoom number
                Size  of  the  lattice.  Ideally it should fill all the screen,
                but one may find other values also interesting.  5 -  50.   The
                default of 20 should do for common screen aspect ratios.
        -ticks number
                The  count  of  points  drawn along every axis.  10 - 100.  The
                default is 30.
                Draw the points twice as big.
        -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  (C) 2007 by Vasek Potocek.  Permission to use, copy, modify,
        distribute, and sell this software and its documentation for  any  pur-
        pose  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 repre-
        sentations are made about the suitability of this software for any pur-
        pose.  It is provided "as is" without express or implied warranty.


        Vasek Potocek <>, Dec-28-07.