Genuary 17: What happens if pi=4?

let simplex

let colors=["#52140b","#a90103","#b25300","#dba708","#c4c550","#008ba7","#201214"]

let newPI=4

let newTAU=8

​

function preload(){

font= loadFont('FamiljenGrotesk-VariableFont_wght.ttf')

}

​

function setup() {

  createCanvas(400, 400); 

  simplex= new openSimplexNoise(Date.now())

}

​

function draw(){

  background('#f4f1de') 

let shift=0

for(let a=0; a<newTAU*newPI; a+=newPI*0.1){

  let adjR= map(a, 0, newTAU*newPI, 0, 200)

  swirl(200+cos(a)*adjR, 200+sin(a)*adjR, adjR*0.5, shift)

  shift+=newPI

}

blendMode(BLEND)

  fill('#f4f1de')

  noStroke()

  rect(0, 0, width, 60)

  rect(0, 0, 60, height)

  rect(340, 0, 60, height)

  rect(0, 340, width, 60)

  noFill()

  stroke(100)

  textFont(font)

   fill(100)

  strokeWeight(1)

  stroke(100)

  text('1.17', 20, 380)  

}

function swirl(x, y, r, offset){

  push()

  translate(x, y)

  rotate(offset)

  blendMode(BLEND)

  beginShape()

noStroke()  

fill(colorMixer(x, y, offset, colors, 255))

for(let a=0; a<newTAU; a+=0.1){

  let adjR= map(simplex.noise2D(a/5, frameCount/50), -1, 1, r*0.2, r*0.6)

  vertex(cos(a)*adjR,sin(a)*adjR)

}

  endShape(CLOSE)

  blendMode(MULTIPLY)

for(let a=0; a<newTAU; a+=0.1){

  let adjR= map(simplex.noise2D(a/newTAU, frameCount/50), -1, 1, r*0.1, r*0.6)

  fill(colorMixer(x, y, a, colors, 255))

  noStroke()

  beginShape()

  vertex(0, 0)

  vertex(cos(a)*adjR,sin(a)*adjR)

  vertex(cos(a+0.05)*adjR, sin(a+0.05)*adjR)

  endShape(CLOSE)

}

  pop()

}

​

​

function colorMixer(x,y, a,colorArray, alpha) {

  let c = noise((x+y)/100, a) * colorArray.length

  let c1 = floor(c)

  let c2 = floor(c + 1) % colorArray.length

  let color1 = colorArray[c1]

  let color2 = colorArray[c2]

  let mix = fract(c)

  let coloring = color(spectral.mix(color1, color2, mix))

  coloring.setAlpha(alpha)

  return coloring

}

​