Re: Rats! Guile raytracer

Interesting curly infix syntax in the math equations of ray tracer.


On Tue, Jul 28, 2026 at 2:05=E2=80=AFAM Matt Wette <[email protected]> w=
rote:

> On 7/13/26 5:47 PM, Felipe Tavares wrote:
> > Hi all,
> >
> > https://git.sr.ht/~felipetavares/rats
> >
> > I wrote a raytracer in Guile over this past weekend, and week prior
> that, really. Thought it might interest some of you.
> >
> > It contains a simple Wayland client, largely based on the work from
> Philippe Gaultier (
> https://gaultier.github.io/blog/wayland_from_scratch.html). It is mostly
> self-contained in the wayland/ subdirectory, and depends only on libc for
> some syscalls.
> >
> > Other than that it's just a standard basic raytracer, mostly built out
> of guess work and Wikipedia. These are the pages I had open after finishi=
ng:
> >
> >
> > -   https://en.wikipedia.org/wiki/Ray_tracing_(graphics)
> > -   https://en.wikipedia.org/wiki/Reflection_(mathematics)
> > -   https://en.wikipedia.org/wiki/Snell's_law#Vector_form
> > -   https://en.wikipedia.org/wiki/Specular_reflection
> > -   https://en.wikipedia.org/wiki/Line%E2%80%93plane_intersection
> > -   https://en.wikipedia.org/wiki/Line%E2%80%93sphere_intersection
> > -   https://en.wikipedia.org/wiki/Matrix_multiplication
> > -   https://simple.wikipedia.org/wiki/Dot_product
> >
> >
> > Of course, coupled with the Guile reference manual itself:
> https://doc.guix.gnu.org/guile/latest/en/guile.html.
> >
> >
> > Best,
> > Felipe
> >
>
> If you are interested, I wrote similar project.
> The only C code is to implement mmap, sendmsg and recvmsg in guile.
>
> https://github.com/mwette/guile-wl-play
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