On Sun, Mar 4, 2012 at 10:07 AM, Antonio Recio <[email protected]> wrote:
> How I can use proxy to set the AddObserver?
I'm not sure what you mean, sorry, but I'll take a guess.
If for some reason you want to use proxy rather than fn, it's
possible. Also note, there's nothing magic about using IFn here, any
interface that provides a method that takes no arguments could
potentially work.
To me, proxy seems a little less likely to actually work than my first
example. I have no idea what vtk is doing under the hood, but in all
likelihood they're using reflection, and reflection tends to have some
issues with proxy.
(def myCallback
(proxy [clojure.lang.IFn] []
(invoke []
(let [t (vtkTransform.)]
(.GetTransform t)
(-> boxWidget .GetProp3D (.SetUserTransform t)))))
; AddObserver is looking for a no-args method, and fns with no args
qualify. Their method is named "invoke" from the IFn interface
(.AddObserver boxWidget "interactionEvent" myCallback "invoke")
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