voronoi(6) XScreenSaver manual voronoi(6)

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 (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 6.09 (07-Jun-2024) voronoi(6)