​

function setup() {

  createCanvas(windowWidth, windowHeight);

  colorMode(RGB);

  mic = new p5.AudioIn();

  mic.start();

}

​

function windowResized() {

  resizeCanvas(windowWidth, windowHeight);

}

​

function draw() {

  background("black")

  let vol = mic.getLevel();

  push();

  fill("lavender");

  star(width / 2, height / 2, vol * 5000, vol * 2500, 12);

  pop();

  console.log(vol);

}

​

function star(x, y, radius1, radius2, npoints) {

  let angle = TWO_PI / npoints;

  let halfAngle = angle / 2.0;

  beginShape();

  for (let a = 0; a < TWO_PI; a += angle) {

    let sx = x + cos(a) * radius2;

    let sy = y + sin(a) * radius2;

    vertex(sx, sy);

    sx = x + cos(a + halfAngle) * radius1;

    sy = y + sin(a + halfAngle) * radius1;

    vertex(sx, sy);

  }

  endShape(CLOSE);

}

​

​