Generates fields of concentric circles or ovals, and combines the planes with various operations. The planes are moving independently of one another, causing the interference lines to spray. https://en.wikipedia.org/wiki/Moire_pattern Written by Jamie Zawinski; 1998.
Generates random mazes, with three different algorithms: Kruskal, Prim, and a depth-first recursive backtracker. It also solves them. Backtracking and look-ahead paths are displayed in different colors. https://en.wikipedia.org/wiki/Maze_generation_algorithm https://en.wikipedia.org/wiki/Maze_solving_algorithm Written by Martin Weiss, Dave Lemke, Jim Randell, Jamie Zawinski, Johannes Keukelaar, and Zack Weinberg; 1985.
repairs burn-in on LCD monitors. This saver is functional, rather than pretty. Believe it or not, screen burn is not a thing of the past. It can happen to LCD screens pretty easily, even in this modern age. However, leaving the screen on and displaying high contrast images can often repair the damage. That's what this screen saver does. See also: http://docs.info.apple.com/article.html?artnum=88343 http://toastycode.com/blog/2008/02/05/lcd-scrub/ Inspired by the like-named program by Daniel Sandler. Written by Jamie Zawinski; 2008.