Ait

Ait - Concatenative language for making visual demos with Canvas

Ait by @mollerse is a web based concatenative language for creative programming: functional-art.org

It is very similar to the Joy programming language with a large vocabulary implemented in Javascript.

Resources:

• GitHub-Repo+Reference: mollerse/ait-lang
• Youtube Video: Revisting Concatenative Languages - Code Mesh 2017
• Try it out on the Ait Playground: mollerse.github.io/ait-playground

With the default example:

"canvas" createElement canvasContext
500 500 canvasDimensions

hsl: "hsl(%s, %s%, %s%)" replace3 ;

teal: 60 85 180 hsl ;
black: 0 0 0 hsl ;
pink: "#d36fc8" ;
blue: "#2347e6" ;

Y: 1 at ;
X: 0 at ;
withX: 0 ins ;
withY: 1 ins ;

toCarthX:
  -> P
  P X P Y cos * ;

toCarthY:
  -> P
  P X P Y sin * ;

toCarth:
  -> P
  P toCarthX
  P toCarthY
  P withY withX ;

toPolarR:
  -> P
  P X dup *
  P Y dup *
  + sqrt ;

toPolarPhi:
  -> P
  P X P Y atan2 ;

toPolar:
  -> P
  P toPolarR
  P toPolarPhi
  P withY withX ;

toRad: 180 / PI * ;

2deg: PI / 180 * ;

add2Y:
  swap
  -> P
  P Y + P withY ;
add2X:
  swap
  -> P
  P X + P withX ;

H: canvasHeight ;
W: canvasWidth ;
WMax: W 2 / ;
WMin: WMax neg ;
HMax: H 2 / ;
HMin: HMax neg ;
WindowMin: WMin HMin [] cons cons ;
WindowMax: WMax HMax [] cons cons ;

fillBackground:
  black fillStyle
  WindowMin W H fillRect ;

random25: -25 25 random2 ;

calcNextControlPoint:
  random25 add2X
  3 toRad add2Y ;

calcNextAlongCircle:
  6 toRad add2Y ;

circle:
  beginPath
  dup toCarth moveTo
  [ Y 2 PI * 6 toRad - <= ]
  [
    dup [ calcNextControlPoint toCarth ] dip
    calcNextAlongCircle dup
    [ toCarth quadraticCurveTo ] dip
  ]
  while
  pop
  closePath ;

tealStroke: teal strokeStyle ;
pinkStroke: pink strokeStyle ;
blueStroke: blue strokeStyle ;

config:
  WMax HMax translate
  2.5 lineWidth
  0.5 globalAlpha
  black fillStyle ;

config
10
[ fillBackground
  [175 0] circle tealStroke stroke [] unstack
  [125 0] circle pinkStroke stroke [] unstack
  [150 0] circle blueStroke stroke [] unstack ]
times