Genuary 4: Black on Black - OpenProcessing

mySketch
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p5.disableFriendlyErrors = true
console.log = () => {}
​
let geom
​
function setup() {
  createCanvas(windowWidth, windowHeight, WEBGL)
}
​
function regenerate() {
  if (geom) {
    freeGeometry(geom)
  }
  geom = buildGeometry(() => {
    let n = round(random(5, 20))
    for (let i = 0; i <= n; i++) {
      push()
      translate(
        random(-1, 1)*width*0.05,
        map(i, 0, n, height*0.4, -height*0.4) + random(-1,1)*height*0.05
      )
      rotateX(PI/2 + random(-1, 1) * PI * 0.15)
      rotateZ(random(-1, 1) * PI * 0.15)
      torus(
        random(0.1, 0.3) * width,
        random(0.01, 0.05) * width,
        50,
        30
      )
      pop()
    }
  })
  geom.clearColors()
}
​
let lastScene = -1
function draw() {
  const period = 8000
  
  const ms = millis()
  const scene = floor(ms / period)
  if (scene !== lastScene) {
    regenerate()
    lastScene = scene
  }
  
  const t = (ms % period)/period
  background(0)
  orbitControl()
  s = map(t, 0, 0.2, 0, 1, true) * map(t, 0.8, 1, 1, 0, true)
  directionalLight(s*255, s*255, s*255, -0.4, 0, 1)
  directionalLight(s*255, s*255, s*255, 0.4, 0, 1)
  directionalLight(s*255, s*255, s*255, 0, -0.4, 1)
  directionalLight(s*255, s*255, s*255, 0, 0.4, 1)
  noStroke()
  fill(100)
  specularMaterial(255)
  shininess(400)
  scale(0.8)
  rotateY(millis() * 0.0001)
  model(geom)
}