let index = 0;

let synth;

​

// scales to try

// minor pentatonic

//[0, 3, 5, 7, 10]

// whole tone

// [0, 2, 4, 6, 8, 10]

let myScale;

​

function setup() {

  createCanvas(400, 400);

  osc = new p5.Oscillator();

  osc.setType('triangle');

  osc.freq(440);

  // osc.start();

  masterVolume(0.3);

  myScale = shiftScale([ 0, 3, 5, 7, 10 ], 60);

  synth = new p5.PolySynth();

}

​

function draw() {

  background(220);

  text("Press any key to play a random note", width/2, height/2);

}

​

function keyPressed() {

  // any note on the keyboard

  //let note = random(60, 72);

  // any note within a range of the keyboard

  // let note = random(60, 72);

  // any random note within Cm pentatonic

  // let myScale = [60, 63, 65, 67, 70]

  // index = int(random(myScale.length));

  // let note = myScale[index];

  // ascending notes within Cm pentatonic

  // let myScale = [60, 63, 65, 67, 70]

  // index = (index + 1) % myScale.length;

  // play any scale

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

  // index = int(random(myScale.length));

  // let note = myScale[index];

  // play a chord

  // let chord = [0, 3, 7, 10, 14];

  // let shiftedChord = shiftScale(chord, int(random(60, 65)));

  // console.log(shiftedChord);

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

  //   console.log(shiftedChord[i]);

  //   synth.play(midiToFreq(shiftedChord[i]), 0.8, 0, 0.5);

  // }

}