Actually, one last try before I build vtk and try it myself. The
problem seems to me that vtk is looking for a method that takes no
parameters and return void. "invoke" returns Object, let's use "run"
instead.
So try this:
(def myCallback
(fn []
(let [t (vtkTransform.)]
(.GetTransform t)
(-> boxWidget .GetProp3D (.SetUserTransform t)))))
; AddObserver is looking for a no-args method that return void, and
fns with no args
qualify. For fns, "run" should work.
(.AddObserver boxWidget "interactionEvent" myCallback "run")
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