On 04/19/2014 09:43 PM, Alexander D. Knauth wrote:
On Apr 19, 2014, at 10:44 PM, Neil Toronto <neil.toro...@gmail.com
<mailto:neil.toro...@gmail.com>> wrote:
That is weird. It works in the nightly build without annotating
anything but `sphere3d`, and likely in the next release as well.
Keyword arguments haven't been all that well-supported in the past, so
I'd try making the arguments to sphere3d positional instead.
Making ctr-posn and r positional arguments solved the problem:
(: sphere3d ((Vectorof Real) Nonnegative-Real [#:color Plot-Color] ->
renderer3d))
(define (sphere3d ctr.posn r #:color [color "black"])
(let: ([ctr.x : Real (vector-x ctr.posn)]
[ctr.y : Real (vector-y ctr.posn)]
[ctr.z : Real (vector-z ctr.posn)])
(isosurface3d (λ: ([x : Real] [y : Real] [z : Real])
(let: ([posn : (Vectorof Real) (vector x y z)])
(vmag^2 (v- posn ctr.posn))))
(ann (sqr r) Real)
(ann (- ctr.x r) (U Real False)) (ann (+ ctr.x r) (U
Real False))
(ann (- ctr.y r) (U Real False)) (ann (+ ctr.y r) (U
Real False))
(ann (- ctr.z r) (U Real False)) (ann (+ ctr.z r) (U
Real False))
#:line-style 'transparent
#:color color)))
So is it that it can handle optional keyword arguments but not mandatory
keyword arguments?
I think I remember something like that, yes. None of Plot's keyword
arguments are mandatory, so that would explain the difference.
Neil ⊥
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