http://davefry.net/journal/2008-04/04-02/ Photojournal for April 2nd, 2008 04-02-01-skybridge.jpg 04-02-02-view1.jpg 04-02-03-view2.jpg 04-02-04-view3.jpg 04-02-05-parkinggarage.jpg 04-02-06-quadtrees1.jpg 04-02-07-quadtrees2.jpg 04-02-08-quadtrees3.jpg 04-02-09-quadtrees4.jpg 04-02-10-quad.jpg 04-02-11-towardredsquare.jpg