[Fluxus] nurbs problems

[gabor papp]

i encountered some problems with nurbs shapes.

build-nurbs-plane generates funny shapes sometimes:

(clear)
(hint-none)
(hint-wire)

(for* ([x (in-range 3 11)]
        [y (in-range 3 11)])
     (identity)
     (translate (vector x 0 y))
     (build-nurbs-plane x y))

http://www.flickr.com/photos/gaborpapp/2676541153/sizes/o/


nurbs-sphere pdata-size differs from the expected value. a 10x10 sphere 
is supposed to have 100 pdata elements, but it has 130 instead.

(clear)
(define p (build-nurbs-sphere 10 10))
(with-primitive p
     (display (pdata-size))(newline))

are these bugs or am i doing something wrong?

dave, do you have any idea why these happen or should i look into the 
nurbs functions?

best,
gabor