queens - n queens screensaver

queens [-display host:display.screen] [-window] [-root] [-install] [-visual visual] [-delay microseconds] [-wireframe] [-fps]

The queens program solves the n-queens problem (where, in this program, N is between 5 and 10 queens) using a straightforward backtracking algorithm. The problem is: how may one place N queens on an NxN chessboard such that no queen can attack a sister?

queens accepts the following options:

-window

Draw on a newly-created window. This is the default.

-root

Draw on the root window.

-install

Install a private colormap for the window.

-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.

-wireframe

Render in wireframe instead of solid. -fps Display a running tally of how many frames per second are being rendered. In conjunction with -delay 0, this can be a useful benchmark of your GL performance.

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.

It's not unknown for this and other OpenGL hacks to fail under hardware accelaration (UtahGLX) and take the X server with them. Texture images must be 16x16 or 32x32 or 64x64 etc.

X(1), xscreensaver(1) xscreensaver-demo(1), xscreensaver-getimage(1)

Copyright © 2002 by Blair Tennessy. 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.

Blair Tennessy <tennessb@unbc.ca>, 20-April-2002.