let y;

let offset = 0;

let perlinY;

let previousX = 0;

let previousY = 0;

​

function setup() {

  createCanvas(400, 400);

  strokeWeight(2);

  x = 0;

}

​

function draw() {

  perlinY = noise(offset);           // between 0-1

  y = map(perlinY, 0, 1, 50, height-50); // between 0-width

  // y = random(0, height);

  // point(x, y);

  line (previousX, previousY, x, y);

  offset = offset + 0.05;

  x = x + 1;

  if (x > width) {

    x = 0;

    background(255);

  }

  previousX = x;

  previousY = y;

}

​

​

​

​

​

​

​

​

​

​