Martin Hagerup's Travelling Salesman 2-OPT Heuristic for Dummies . Source code is available. Fred Henle 's point-line duality demo illustrates three different duality maps. 2d convex hulls and 3d clustering by Dorit Hochbaum , from the RIOT project at Berkeley. Used in his Java-illustrated version of Euclid's Elements .
Information is currently available in German only.
Realizing a Delaunay Triangulation by Tim Lambert is the exact opposite of a Delaunay triangulator. Unfortunately, the demo doesn't include musical accompaniment. Pat Morin 's sorting algorithm demo . Source code is available. Not for use in hazardous environments.