Hello, I developed a small framework to model orientation (north, east, south, west). It defines some common operations that can be done on such objects (turning, getting the opposite orientation, moving on n steps on a discrete grid from a given position following certain orientation, etc…). Also, it supporte composed orientations (e.g. north-east). More details on GitHub [1].
To install it: Metacello new baseline: 'Orientation'; repository: 'github://juliendelplanque/Orientation/repository'; load This is not a lot but it is tested and I think it does its job well. So if you need to model orientation, consider to use it. :-) If any ideas of what I could add to this API, I’m interested. Regards, Julien [1]: https://github.com/juliendelplanque/Orientation --- Julien Delplanque Doctorant à l’Université de Lille 1 http://juliendelplanque.be/phd.html Equipe Rmod, Inria Bâtiment B 40, avenue Halley 59650 Villeneuve d'Ascq Numéro de téléphone: +333 59 35 86 40