Heya, > There is Guile-Cairo if you just want a basic canvas. > http://www.nongnu.org/guile-cairo/ > See also: https://www.cairographics.org/
Which you can use from Guile-Clutter [1], a must. I maintain a personal toolbox,
called grip, which as some guile-clutter examples [2], some using cairo (the
spline, the clock ...)
https://www.gnu.org/software/guile-gnome/clutter/ [1]
http://www.nongnu.org/grip/examples.html [2]
> The problem is their level is not as high as I'd like. The course I'm
> following is
> for beginner programmers, so they use higher level libraries for drawing and
> animating. For example, you can write a checker pattern function like this:
> (define (checker-pattern color-a color-b)
> (above (beside (square 20 "solid" color-a) (square 20 "solid" color-b))
> (beside (square 20 "solid" color-b) (square 20 "solid" color-a))))
> The functions "above", "beside", and "square" come with a Racket's image
> library.
> Guile cairo's interface is lower level, it feels like reading the SVG
> specification, but without the geometric shapes.
I'm working on Guile-CV, a computer vision functional programming library for
Guile,
which provides a high level API. I uploaded a tarball here (for GNU
evaluators),
here:
http://download.savannah.gnu.org/releases/grip/guile-cv/guile-cv-0.1.0.tar.gz
http://download.savannah.gnu.org/releases/grip/guile-cv/guile-cv-0.1.0.tar.gz.sig
[ GPG Key: A3057AD7
[ gpg --keyserver keys.gnupg.net --recv-keys A3057AD7
[ I will upload a new version within the next few days, stay tuned...
Chers,
David
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