// Creates a field of vectors that flow in a random direction

// Changes direction when the mic input is loud (try clapping)

// Field is empty when the mic is quiet (try being silent)

// Changes color of vectors depending on amplitude

// Best way to see this is by playing a song

​

let particles = [];

const num = 1000;

let seed = 0.01;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  colorMode(HSB);

}

​

function draw() {

  background(color(0, 0.05));

  stroke(200, 200, 200);

  if (particles.length == 0) {

    newArray();

  }

  for (let i = 0; i < num; i++) {

    let p = particles[i];

    point(p.x, p.y);

    let a = TAU;

    p.x += cos(mouseX * 1000);

    p.y += sin(mouseY * 1000);

    if (!onScreen(p)) {

      p.x = random(width);

      p.y = random(height);

    }

  }

}

​

function onScreen(p) {

  return p.x > 0 && p.x < width && p.y > 0 && p.y < height;

}

​

function newArray() {

  for (let i = 0; i < num; i++) {

    particles.push(createVector(random(width), random(height)));

  }

}

​