[Fluxus] extrusion, origin, unlit

[Kassen]

Dear all,

Build-extrusion has some sort of issue when being affected by both
hint-unlit and hint-normal. The code below demonstrates this; we'd
expect 3 cup shapes, two with a displayed origin and one being unlit.
Instead we get one normal one, one with a displayed origin and
-surprisingly- a blue one.

As far as bugs go this one of the more baffling ones to encounter as
I'm sure you'll agree if you first look at the example below, then run
it.

Yours,
Kas.


(clear)

(with-primitive
    (build-extrusion
        (build-circle-points 10 1)
        (list
            (vector 0 0 0)
            (vector 0 0 0)
            (vector 0 1.5 0)
            (vector 0 1.5 0))
        (list 0 1 .3 0)
        1
        (vector 1 0 0))
    (colour .5)
    (hint-wire))

(translate (vector 5 0 0))

(with-primitive
    (build-extrusion
        (build-circle-points 10 1)
        (list
            (vector 0 0 0)
            (vector 0 0 0)
            (vector 0 1.5 0)
            (vector 0 1.5 0))
        (list 0 1 .3 0)
        1
        (vector 1 0 0))
    (colour .5)
    (hint-wire)
    (hint-origin))

(translate (vector -10 0 0))

(with-primitive
    (build-extrusion
        (build-circle-points 10 1)
        (list
            (vector 0 0 0)
            (vector 0 0 0)
            (vector 0 1.5 0)
            (vector 0 1.5 0))
        (list 0 1 .3 0)
        1
        (vector 1 0 0))
    (colour .5)
    (hint-wire)
    (hint-origin)
    (hint-unlit))