​

function setup() {

  createCanvas(400, 400);

  background(220);

  synth = new p5.PolySynth();  

  masterVolume(0.5);

}

​

function mousePressed() {

//   let scale = shiftScale([ 0, 3, 5, 7, 10 ], 60);

//   let midiNote = scale[int(random(0, scale.length))];

//   let chord = shiftScale([ 0, 3, 7, 10, 14 ], int(random(60, 65)));

//   for (let i = 0; i < chord.length; i +=1) {

//     let note = midiToFreq(chord[i]);

    // synth.play(note, 1, 0, 0.5);

//   }

  // // let's talk about making a loop

  // let scaleLower = shiftScale([ 0, 3, 5, 7, 10 ], 60);

  // let scaleHigher = shiftScale([ 0, 3, 5, 7, 10 ], 72);

  // let scale = scaleLower.concat(scaleHigher);

  let scale = [60, undefined, 62, 64, undefined, 72];

  let loopIndex = 0;

  let looper = new p5.SoundLoop(function(timeFromNow) {

    let midiNote = scale[loopIndex];

    if (midiNote) {

      let note = midiToFreq(scale[loopIndex]);

      synth.play(note, 1, timeFromNow, 0.5);

    }

    loopIndex = (loopIndex + 1) % scale.length;

  }, 0.25);

  looper.maxIterations = scale.length;

  looper.start();

}

​

function draw() {

}

​

​