On Sep 16, 2010, at 12:13 PM, Alan wrote: > I think you may have misunderstood the first suggestion I made, about > keeping (shape, color) pairs in your atomic vector. I really meant > java.awt.Shape and java.awt.Color objects, rather than a symbol > (keyword is better as Christophe suggests) and a bunch of numbers. > Like so: > (defn render-shape [g shape color] > (doto g > (.setColor color) > (.fill shape))) > > (draw-shape (Rectangle. 50 50 200 100) (Color. 0 0 255 75)) > > Java already has the "multi-method" Christophe suggests, in the form > of Graphics.fill(Shape); you don't have to implement it yourself.
Ah -- I didn't misunderstand, but I also didn't know about Graphics.fill(Shape) so I didn't see the full picture or the real benefit. This should indeed help to neaten things up a bit. (And thanks Christophe for the keyword advice -- my use of symbols is another old Lisp habit, which wasn't great even there.) I guess the main remaining issue is just the code to create the window and panel, which is still pretty big and cumbersome to be part of the sort of ultra-simple graphical "hello world" that I had in mind. But if there's no simpler way to do that with the built-in java libraries then I guess I'm stuck with that. Thanks, -Lee -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
