​

let Particle = function(position, direction, r,g,b){

  this.position = createVector(width/2, height/2)

  this.speed = 1

  this.color = [r + random(-32,32),g+ random(-32,32),b+ random(-32,32)]

  this.direction = direction

  this.draw = function(){

    circle(this.position.x, this.position.y, this.diameter)

    fill(this.color)

  }

  this.update = function(energy){

    this.speed = energy

    this.diameter = random(5, 7) + energy * 50

    this.position.x += this.speed * 10 * Math.sin(this.direction)

    this.position.y += this.speed * 10 * Math.cos(this.direction)

    if (this.position.y > width || this.position.x > height || this.position.y < 0 || this.position.x < 0) { 

      this.position = createVector(width/2, height/2)   

    }

  }

}

​

function setup(){

  createCanvas(windowWidth, windowHeight)

  noStroke()

  let mic = new p5.AudioIn()

  mic.start()

  fft = new p5.FFT()

  fft.setInput(mic)

  positionParticles()

}

​

function draw(){

  background(0, 0, 0)

  let spectrum = fft.analyze()

  updateParticles(spectrum)

}

​

​