// Coding in the Cabana

// The Coding Train / Daniel Shiffman

// https://thecodingtrain.com/CodingInTheCabana/004-worley-noise.html

// https://youtu.be/4066MndcyCk

// p5 port: https://editor.p5js.org/codingtrain/sketches/QsiCWVczZ

​

let points = [];

​

function setup() {

  createCanvas(300, 300);

  pixelDensity(1);

  for (let i = 0; i < 20; i++) {

    points[i] = createVector(random(width), random(height), random(width));

  }

}

​

function draw() {

  loadPixels();

  for (let x = 0; x < width; x++) {

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

​

      let distances = [];

      for (let i = 0; i < points.length; i++) {

        let v = points[i];

        let z = frameCount % width;

        let d = dist(x, y, z, v.x, v.y, v.z);

        distances[i] = d;

      }

      let sorted = sort(distances);

      let r = map(sorted[0], 0, 150, 0, 255);

      let g = map(sorted[1], 0, 50, 255, 0);

      let b = map(sorted[2], 0, 200, 255, 0);

      let index = (x + y * width) * 4;

      pixels[index + 0] = r;

      pixels[index + 1] = g;

      pixels[index + 2] = b;

      pixels[index + 3] = 255;

    }

  }

  updatePixels();

}

​