lucasdinonolte/sol

Work in progress functional declarative 2D drawing programming language to combine two of my interests: Programming languages and conceptual art.

Sol

A declarative functional and reactive language for creative coding. Initially created to learn more about parsers and interpreters.

; const declares a constant
; cannot be changed
(const TL <0 0>)
(const TR <1 0>)
(const BL <0 1>)
(const BR <1 1>)
(const CENTER <0.5 0.5>)

; $ declares state
; state can be changed and will cause a re-render
($ s 1000)
($ c 100)
($ bgColor #121212)

; Lists need to be wrapped so they
; don't get mistaken for watched variable
($ positions ([ BL BR ]))

; You can also pass other state variables to watch
; will be re-calculated if s changes
($ SIZE [s] <s s>)
($ maxR [s] (* 2 s))

; def declares a named function
(def drawCircles [num origin] (
  (map (range num) (fn [n i] (
    (circle origin (* (+ 1 i) (/ maxR num)) { :stroke #f1f1f1 })
  )))
))

($ output [SIZE c positions bgColor] (draw [
  (rect <0 0> <s s> { :fill bgColor })
  (map positions (fn [pos] (
    (drawCircles c <(* s (vec/x pos)) (* s (vec/y pos))>)
  )))
]))

Usage

Should not yet be used for anything serious. But if you want to play with it, clone this repo and run.

npm run cli path/to/your/sketch.sol # or yarn or pnpm …

Why Sol?

Named after conceptual artist Sol LeWitt.

Is this a stupid idea?

Mostly yes, but also interesting.

Inspiration

• Jamie Kyle's Super tiny Compiler
• Mihai Bazon's: How to implement a programming language in JavaScript
• Clojure
• Dacein