piecewise (6)

NAME

piecewise - lots of moving circles intersecting in interesting ways.

SYNOPSIS

piecewise [-display host:display.screen] [-visual visual] [-window] [-root] [-delay number] [-count number] [-ncolors number] [-colorspeed number] [-minradius number] [-maxradius number] [-no-db] [-fps]

DESCRIPTION

This draws a bunch of moving circles which switch from visibility to invisibility when they intersect.

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.

-delay number

Per-frame delay, in microseconds. Default: 5000 (0.01 seconds.).

-count number

Number of circles. Default: 32.

-ncolors number

Number of colors, only one of which is used at a time. Default: 256.

-colorspeed number

How fast the color changes (0 - 100). Default: 10.

-minradius number

Minimum circle radius (as a proportion of screen height). Default: 0.05.

-maxradius number

Maximum circle radius (as a proportion of screen height). Default: 0.2.

-db | -no-db

Whether to double buffer.

-fps

Display the current frame rate and CPU load.

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 © 2003 by Geoffrey Irving. 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

Geoffrey Irving.