DragonFly On-Line Manual Pages

voronoi(6)                    XScreenSaver manual                   voronoi(6)

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 (C) 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.

X Version 11                  5.34 (24-Oct-2015)                    voronoi(6)