//
// Pisano mod 7 and 12 as 4th notes and triplet eigth notes respectively
// Notes are descending and Pisano zero terms are taken as the tonic
//
// It doesn't sound... good. But spiralesque, and hypnotic
//

ditty.bpm = 60;
fibo = [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657];
p7notes  = [12, 11, 9, 7, 5, 4, 2]                  // C to B descending (white keys), Pisano 0 is the tonic
p12notes = [12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1]  // C to B descending,              "

p7notesasc  = [0, 2, 4, 5, 7, 9, 11]                  // C to B ascending
p12notesasc = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]  // C to B ascending

loop( () => {

    for (let i=0; i<24; i++) {
        sine.play(p12notes[fibo[i] % 12] + 48, { attack: 0.01, release: 0.25,  duration: 0.125, pan: ((i + 1) / 24) * 2 - 1, amp: 1.0 });
        
        if(i % 3 == 0){
            sine.play(p7notes[fibo[i] % 7] + 36, { attack: 0.01, release: 0.25,  duration: 0.375, pan: (25 - (i + 1) / 24) * 2 - 1, amp: 1.0 });
        }
        sleep( tick_to_second(1 / 3));
    }

}, { name: 'Pisano 7 & 12' });