NAME

       voronoi - draws a randomly-colored Voronoi tessellation

SYNOPSIS

       voronoi  [--display  host:display.screen]  [--visual  visual]  [--window]  [--root]  [--window-id number]
       [--points int] [--point-size int] [--point-speed  ratio]  [--point-delay  seconds]  [--zoom-speed  ratio]
       [--zoom-delay seconds] [--fps]

DESCRIPTION

       Draws  a  randomly-colored  Voronoi  tessellation,  and  periodically  zooms in and adds new points.  The
       existing points also wander around.

       There are a set of control points on the plane, each at the center of a colored cell.  Every pixel within
       that  cell  is  closer  to  that  cell's  control  point  than  to any other control point.  That is what
       determines the cell's shapes.

       When running in a window, you can click  to insert a new point at the mouse  position.   Clicking  on  an
       existing point lets you drag it around.

       This  implementation takes advantage of the OpenGL depth buffer to compute the cells for us, by rendering
       the intersection of overlapping cones in an orthographic plane.

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.

       --points int
               How many points to add each time we zoom in.

       --point-size int
               How big to draw the stars, in pixels.  0 for no stars.

       --point-speed ratio
               How fast the points should wander.  Less than 1 for slower, greater than 1 for faster.

       --point-delay seconds
               How quickly to insert new points, when adding.

       --zoom-speed ratio
               How fast to zoom in.  Less than 1 for slower, greater than 1 for faster.

       --zoom-delay seconds
               Zoom in every this-many seconds.

       --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 © 2007 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.