Noise3D

let increment = 0.01;

let zoff = 0.0;

let zincrement = 0.02;

let n, s;

​

function setup() {

  createCanvas(600, 600);

  background(0);

  frameRate(30);

  noStroke();

  n = 100;

  s = width / n;

}

​

function draw() {

  background(0);

  let xoff = 0.0;

​

  for (let x = 0; x < n; x++) {

    xoff += increment;

    let yoff = 0.0;

​

    for (let y = 0; y < n; y++) {

      yoff += increment;

      let bright = noise(xoff, yoff, zoff);

      let colorScale = bright > 0.6 ? 1 : bright > 0.4 ? 0.75 : 0;

​

      let t = color(0, 150 * colorScale * bright, 255 * colorScale * bright);

​

      fill(t);

      rect(x * s, y * s, s - 1, s - 1);

    }

  }

​

  zoff += zincrement;

}

​