// The Chaos Game

// https://thecodingtrain.com/challenges/123-chaos-game

// Part 1: https://youtu.be/7gNzMtYo9n4

// Part 2: https://youtu.be/A0NHGTggoOQ

​

let ax, ay;

let bx, by;

let cx, cy;

let x, y;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  ax = width / 2;

  ay = 0;

  bx = 0;

  by = height;

  cx = width;

  cy = height;

  x = random(width);

  y = random(height);

  background(0);

  stroke(255);

  strokeWeight(8);

  point(ax, ay);

  point(bx, by);

  point(cx, cy);

}

​

function draw() {

​

  for (let i = 0; i < 100; i++) {

    strokeWeight(2);

    point(x, y);

​

    let r = floor(random(3));

    if (r == 0) {

      stroke(255, 0, 255);

      x = lerp(x, ax, 0.5);

      y = lerp(y, ay, 0.5);

​

    } else if (r == 1) {

      stroke(0, 255, 255);

      x = lerp(x, bx, 0.5);

      y = lerp(y, by, 0.5);

    } else if (r == 2) {

      stroke(255, 255, 0);

      x = lerp(x, cx, 0.5);

      y = lerp(y, cy, 0.5);

    }

  }

}