Color Field II

let n

let center

​

function createPoint(n,radius) {

  let theta = 2.39996*n;

  let r=sqrt(n) * radius;

  let v = createVector(r*sin(theta),r*cos(theta));

  v.add(center)

  return v

}

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  center = createVector(windowWidth * 0.5,windowHeight * 0.5)

  colorMode(HSB)

  background(100);

  n = 0

}

​

function draw() {

  n += 1

  m  = n + random(200)

  let a = createPoint(m,10)

  let b = createPoint(m+1,10)

  let c = createPoint(m-1,10)

  if (n%3 == 0)  {

    let col = color(0,0, 100)

    col.setAlpha(0.05)

    noStroke();

    fill(col)

  }

  else {

    let hue = n % 360

    let col = color(hue,50 + random(50), 50 + random(50));

    col.setAlpha(0.2)

    stroke(col)

    noFill()

  }

  triangle(a.x,a.y,b.x,b.y,c.x,c.y)

  if(n>1000) {

    n = 0

  }

}