In 2011 Giovanni Danzi developed Graph Simulator, a Java tool for the visual simulation, test, understanding and debugging of algorithms for computing geometric graphs. The tool was included in his master thesis in Computer Engineering at Sapienza University of Rome, under the supervision of Fabrizio d'Amore (myself) and the support of Paolo Franciosa (thanks!).
As a courtesy to possibly interested students and researchers, a link to the tool is provided. The tool is no longer maintained and it is provided with an ISC license.
Graph Simulator. If your operating system does not support running jar files by just double-clicking them, use from the command line
java -jar GraphSimulatorNew.jar