Drawing Force-Directed Graphs Using Optigraph

Optigraph is an interactive, multi-threaded tool for forcedirected graph drawing. The interface allows a user to construct an arbitrary graph made of edges, free vertices and fixed vertices, and then apply circular and orthogonal spring forces to the graph to achieve an optimal graph layout. The user can step through simulations, transform the graph and vary forces at any time making the application highly interactive and educational.