​

function setup() {

  createCanvas(400, 400);

  osc = new p5.Oscillator();

  osc.start();

  colorMode(HSB);

}

​

function draw() {

  let c = map(mouseX, 0, width, 0, 360, true);

  background(0, 0, 66);

  let pitch = map(mouseX, 0, width, 200, 800, true);

  osc.freq(pitch);

  let siz = map(mouseY, height, 0, 10, 150, true);

  fill(c, 100, 100);

  ellipse(mouseX, mouseY, siz);

  let vol = map(mouseY, 0, height, 1, 0, true);

  osc.amp(vol);

}

​

​

​