Your Python code would seem to define 'strokes' but then access
'stroke1'. Unless 'stroke1' is defined somewhere else I should suspect
this to be problematic. (I could be missing something as I never use
Python.)
Your Scheme code looks fine except for the fact that
'gimp-vectors-stroke-get-length' returns a list containing just a
single item, the length. Use 'car' instead of 'caddr' and your code
should work.
(let* (
(count 0)
(vector (car(gimp-image-get-active-vectors img)))
(strokes (cadr(gimp-vectors-get-strokes vector)))
(len (car(gimp-vectors-stroke-get-length vector
(aref strokes count)
100.0))))
(print (list len vector))
)
Quoting dorai iyer <[EMAIL PROTECTED]>:
> Hi,
> I am trying to draw a vector ( as a single polygonal line) and then stroke
> it and measure its length using
> gimp-vectors-stroke-get-length.
>
> So I first used python to try to do it. Here is the script
> def vector_length(image, drawable):
> vectors = pdb.gimp_image_get_active_vectors(image)
> strokes = pdb.gimp_vectors_get_strokes(vectors)
> len1 = pdb.gimp_vectors_stroke_get_length(vectors, stroke1, 100.0)
> the vectors and strokes went fine but I could not get the length
>
> I then thought maybe I should try using tinyscheme and tried the following
> (let* (
> (count 0)
> (vector (car(gimp-image-get-active-vectors img)))
> (strokes (cadr(gimp-vectors-get-strokes vector)))
> (len (caddr(gimp-vectors-stroke-get-length vector (aref strokes
> count) 100.0)))
> )
> (print (list len vector))
> I still get an unbound variable error. a search fo previous implementations
> did not show much. Has anyone used
> gimp-vectors-stroke-get-length
> in either scm or python successfully and can help resolve my problem. I am
> more familaiar with python then tinyscheme but not adept at either which is
> probably clearly reflected in my programming.
> Thanks for the help.
>
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