// The Coding Train / Daniel Shiffman

// https://thecodingtrain.com/challenges/134-heart-curve

// https://youtu.be/oUBAi9xQ2X4

// I <3 you

​

// Code from Challenge: https://editor.p5js.org/codingtrain/sketches/egvieHyt0

​

const heart = [];

let a = 0;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

}

​

​

function draw() {

  background(0);

  translate(width/2, height/2);

​

  stroke(255);

  strokeWeight(2);

  fill(150, 0, 100);

  beginShape();

  for (let v of heart) {

    vertex(v.x, v.y);

  }

  endShape();

​

  const r = height/40;

  const x = r * 16 * pow(sin(a), 3);

  const y = -r*(13 * cos(a) - 5*cos(2*a) - 2*cos(3*a)- cos(4*a));

  heart.push(createVector(x, y));

  // So that it stops

  if (a > TWO_PI) {

    noLoop();

  }

​

  a += 0.1;

}