​

const order = 2;

​

let slider;

let paragraph;

​

const nGrams = {};

let original;

let fileContent;

​

function preload() {

  fileContent = loadStrings('cicero.txt');

}

​

function setup() {

  noCanvas();

  original = fileContent.join('');

  generateNGrams();

  slider = createSlider(0, 2000, 500);

  paragraph = createP(generateText())

}

​

function draw() {

  if (slider.value() != length) {

    length = slider.value();

    paragraph.remove()

    paragraph = createP(generateText())

  }

}

​

function generateNGrams() {

  for (let i = 0; i < original.length - order + 1; i++) {

    const gram = original.substring(i, i + order);

    if (!nGrams[gram]) {

      nGrams[gram] = [];

    }

    nGrams[gram].push(original.substring(i + order, i + order + 1));

  }

}

​

function generateText() {

  let txt = random(original.split(' ')).substring(0, order);

  for (let i = 0; i < length; i++) {

    const gram = txt.substring(txt.length - order, txt.length);

    let newChar = random(nGrams[gram] || ['']);

    if (newChar.length == 0) newChar = " ";

    txt += newChar;

  }

  return txt;

}