const radius = 1

const maxDist = 40

​

const dim = 400

const particles = []

​

function setup() {

  createCanvas(dim, dim)

​

  const r = 70

  const cx = dim / 2

  const cy = dim / 2

​

  for (let i = 0; i < n; ++i) {

    const rad = TWO_PI / n * i

    particles[i] = {

      x: cx + cos(rad) * r,

      y: cy + sin(rad) * r,

      vx: 0,

      vy: 0,

    }

  }

}

​

function draw() {

  noFill()

  stroke(0, 10)

​

  for (let i = 0; i < n; ++i) {

    const p = particles[i]

    p.x += p.vx

    p.y += p.vy

​

    p.vx += 0.2 * (Math.random() - 0.5)

    p.vy += 0.2 * (Math.random() - 0.5)

​

    circle(p.x, p.y, radius)

  }

}