let total = 0;

let circle = 0;

let recordPI = 0;

let amount = 10000; //config

​

function setup() {

  createCanvas(402, 402);

  background(0);

  translate(width / 2, height / 2);

  stroke(255);

  strokeWeight(2);

  noFill();

  ellipse(0, 0, r * 2, r * 2);

  rectMode(CENTER);

  rect(0, 0, r * 2, r * 2);

}

​

function draw() {

  translate(width / 2, height / 2);

​

  for (let i = 0; i < amount; i++) {

    let x = random(-r, r);

    let y = random(-r, r);

    total++;

​

    let d = (x * x) + (y * y);

    if (d < (r * r)) {

      circle++;

      stroke(100, 255, 0, 100);

    } else {

      stroke(0, 100, 255, 100);

    }

    strokeWeight(1);

    point(x, y);

​

    let pi = 4 * (circle / total);

    let recordDiff = Math.abs(Math.PI - recordPI);

    let diff = Math.abs(Math.PI - pi);

    if (diff < recordDiff) {

      recordDiff = diff;

      recordPI = pi;

      //print(recordPI);

    }

  }

​

  //tekst na ekranie

  setTimeout(function() {

    noLoop();

    background(0);

    stroke(255);

    textAlign(CENTER);

    textSize(32);

    text(recordPI, 0, 0);

  }, 5000);

​

}