trusty (6) voronoi.6x.gz

NAME

       voronoi - draws a randomly-colored Voronoi tessellation

SYNOPSIS

       voronoi [-display host:display.screen] [-visual visual] [-window] [-root] [-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.

       -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.

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.