​

var song;

​

function preload () {

song = loadSound('/assets/song.mp3');

}

​

function setup() {

  song.loop();

  createCanvas(windowWidth, windowHeight);

  w = windowWidth;

  h = windowHeight;

  c = color(random(255), random(255), random(255));

  //mic stuff

  mic = new p5.AudioIn();

  mic.start();

  amplitude = new p5.Amplitude();

  amplitude.setInput(song);

  length = 3000;

  angleMode(DEGREES);

​

​

}

​

function draw() {

  translate(w / 2, h / 2);

  background(c, 10);

  level = amplitude.getLevel();

  levelMap = map(level, 0, 1, -5, w - w / 10);

  levelLerp = lerp(levelMap,plevelMap, 0.2);

  for (var i = 0; i < levelMap; i++) { 

    rotate(level);

    ellipse(w / 4 * cos(i * 15.1 * level), h / 4 * sin(i * 15), w / 10);

  }

  plevelMap = levelMap;

}