Provided by: xscreensaver-gl-extra_5.15-2ubuntu1_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  ©  2007  by Vasek 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


       Vasek Potocek <>, Dec-28-07.