// Debussy Timbre Thingy

​

const c_width = 600;

const c_height = 400;

​

let active = false;

let oscillators;

let num_oscillators = 7;

​

let tremolo = new Tone.Tremolo(7, 0.95).start();

tremolo.type = 'triangle';

tremolo.spread = 100;

let reverb = new Tone.JCReverb(0.1);

let reverb_vol = new Tone.Volume(-8);

let master_vol = new Tone.Volume(0);

​

// Debussy Chords

let c0 = ['A2', 'D#3', 'A3', 'C#4', 'F#4', 'C#5', 'F#5'];

let c1 = ['G#2', 'F#3', 'C#4', 'E4', 'A4', 'E5', 'A5'];

let c2 = ['B2', 'A3', 'D#4', 'F#4', 'B4', 'F#5', 'B5'];

let c3 = ['G#2', 'E3', 'G#3', 'B3', 'E4', 'B4', 'E5'];

let c4 = ['G#2', 'G#3', 'B3', 'D#4', 'G4', 'D#5', 'G5'];

let c5 = ['A2', 'D#3', 'A3', 'C#4', 'G#4', 'C#5', 'G#5'];

let line_one = [c0, c1, c2, c3, c4, c5];

let score = [];

​

function setup() {

    createCanvas(c_width, c_height);

    oscillators = build_oscillators(num_oscillators, tremolo, reverb, reverb_vol, master_vol);

    cursor = new Cursor();

}

​

function draw() {

    map_cursor_position(cursor.getPos());

}

​

function mousePressed() {

    active = true;

    tremolo.start();

    let new_chord = get_new_chord();

​

    for (let i=0; i<oscillators.length; i++) {

        oscillators[i].pitch = new_chord[i];

        oscillators[i].oscillator.triggerAttack(oscillators[i].pitch);

    }

​

    return false;

}

​

function mouseReleased() {

    active = false;

    oscillators.forEach(function(o) {

        o.oscillator.triggerRelease();

    });

​

    return false;

}

​

function map_cursor_position(pos) {

    let ramp_val = 0.1;

​

    // Tremolo Mapping

    let t_control = map(pos, 0, height, 0.1, 1.0, true)

    tremolo.depth.rampTo(t_control, ramp_val);

​

    // Volume Mapping

    let m_vol_control = map(pos, 0, height, -20, 0, true);

    master_vol.volume.rampTo(m_vol_control, ramp_val);

​

    // Reverb Mapping

    let r_control = map(pos, 0, height, 0.95, 0.1, true);

    reverb.roomSize.rampTo(r_control, ramp_val);

​

    // Individual Instrument Mapping

    let o_vol_control = map(pos, 0, height, -40, -12, true)

    oscillators[0].panner.volume.rampTo(o_vol_control, ramp_val);

    oscillators[oscillators.length-1].panner.volume.rampTo(o_vol_control, ramp_val);

​

}

​

//

function build_oscillators(num_oscillators, tremolo, reverb, reverb_vol, master_vol) {

    let new_oscillators = [];

    let pan_max = 0.8;

​

    for (i=0; i<num_oscillators; i++) {

        let new_oscillator = build_oscillator();

        let new_panner = new Tone.PanVol(map(i, 0, num_oscillators, -0.8, 0.8), -12);

​

        new_oscillator.chain(new_panner, tremolo, reverb, reverb_vol, master_vol, Tone.Master);

        new_oscillator.chain(new_panner, tremolo, master_vol, Tone.Master);

​

        new_oscillators.push({

            oscillator: new_oscillator,

            panner: new_panner,

            pitch: c0[i]  // This should be overwritten on first mouse click

        });

    }

​

    return new_oscillators;

}

​

// Swap out code here for new oscillator.

// Must return some Tone synth object

function build_oscillator() {

    return new Tone.Synth({

        'oscillator': {

            type: ['sine', 'triangle'][floor(random(2))]

        },

        'envelope': {

            attack: 1,

            decay: 0.0,

            sustain: 1,

            release: 1

        }

    });

}

​

// Relies on global variables, line_one and score

function get_new_chord() {

    if (!(score.length)) {

        score = shuffle_array(line_one);

    }

    return score.shift();

}

​

function shuffle_array(arr) {

    let cpy = arr.slice(0);

    for (var i = cpy.length - 1; i > 0; i--) {

        var j = Math.floor(Math.random() * (i + 1));

        var temp = cpy[i];

        cpy[i] = cpy[j];

        cpy[j] = temp;

    }

​

    return cpy;

}

​

function Cursor() {

    this.y = mouseY;

    this.getPos = function() {

        return (height - this.y)

    }

}