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import Tone from 'tone'
import Nexus from 'nexusui'
import { saveAs } from 'file-saver/FileSaver'
import keys from './lib/keys'
import scales from './lib/scales'
import {
midi_init,
play_note,
play_sequence,
play_interval_sequence,
export_pattern_as_midi,
note_values,
MidiWriter,
transpose,
} from './lib/midi'
import {
requestAudioContext, ftom, norm, dataURItoBlob,
get_bounds, get_diff_bounds,
} from './lib/util'
import {
update_value_on_change,
update_radio_value_on_change,
build_options,
nx
} from './lib/ui'
import * as data from './data'
const DEFAULT_BPM = 60
let recorder = null
let recording = false
midi_init()
/* initialization */
let i = 0, datasets = {}, dataset = {}, bounds = {}, diff = []
let play_fn = play_sequence
data.load().then(lists => {
// pick_dataset('mass shootings')
// requestAudioContext(ready)
console.log(lists)
transpose(lists.gun_violence_by_month.lines)
})
//
/* play next note according to sonification */
function play_next(){
let note_time = 120000 / Tone.Transport.bpm.value * note_values[nx.timing.active][0] * nx.duration.value
setTimeout(play_next, note_time)
let [new_i, notes] = play_fn(i, bounds, diff, note_time)
i = new_i
if (recording) {
let timing = note_values[nx.timing.active][2]
if (timing.length) timing = timing[i % timing.length]
recorder.addEvent(new MidiWriter.NoteEvent({ pitch: notes, duration: 't' + timing }))
}
}
/* bind selects */
function pick_dataset(key){
console.log('pick dataset:', key)
i = 0
dataset = datasets[key]
bounds = get_bounds(dataset)
diff = get_diff_bounds(bounds.rows)
}
var behaviors = {
sequence: { name: 'Sequence', fn: play_sequence },
interval: { name: 'Intervals', fn: play_interval_sequence },
}
function pick_behavior(name){
play_fn = behaviors[name].fn
}
/* build and bind the UI */
function ready() {
scales.build_options(document.querySelector('#scale'))
build_options(document.querySelector('#dataset'), datasets, pick_dataset)
build_options(document.querySelector('#behavior'), behaviors, pick_behavior)
// nx.colorize('#f4d142')
Tone.Transport.bpm.value = DEFAULT_BPM
nx.tempo = new Nexus.Dial('#tempo', {
min: 10,
max: 300,
step: 1,
value: DEFAULT_BPM,
})
update_value_on_change(nx.tempo, '#tempo', true, v => Tone.Transport.bpm.value = v)
nx.timing = new Nexus.RadioButton('#timing', {
size: [400,25],
numberOfButtons: note_values.length,
active: 6,
})
update_radio_value_on_change(nx.timing, '#timing', note_values)
nx.duration = new Nexus.Dial('#duration', {
min: 0,
max: 2,
step: 0.01,
value: 0.8,
})
update_value_on_change(nx.duration, '#duration', false)
nx.offset = new Nexus.Dial('#offset', {
min: -24,
max: 24,
step: 1,
value: 0,
})
update_value_on_change(nx.offset, '#offset', true)
nx.octave = new Nexus.Dial('#octave', {
min: -4,
max: 4,
step: 1,
value: 0,
})
update_value_on_change(nx.octave, '#octave', true)
nx.multiply = new Nexus.Dial('#multiply', {
min: -64,
max: 64,
step: 1,
value: 7,
})
update_value_on_change(nx.multiply, '#multiply', true)
nx.interval = new Nexus.Dial('#interval', {
min: -64,
max: 64,
step: 1,
value: 10,
})
update_value_on_change(nx.interval, '#interval', true)
const export_midi_button = document.querySelector('#export_midi')
export_midi_button.addEventListener('click', () => {
export_pattern_as_midi(dataset.name, bounds, diff, nx.tempo.value, nx.timing.active, play_fn)
})
const record_midi_button = document.querySelector('#record_midi')
record_midi_button.addEventListener('click', () => {
if (recording) {
record_midi_button.innerHTML = 'Record MIDI'
document.body.classList.remove('recording')
recording = false
const writer = new MidiWriter.Writer([recorder])
const blob = dataURItoBlob(writer.dataUri())
saveAs(blob, 'Recording - ' + dataset.name + '.mid')
} else {
record_midi_button.innerHTML = 'Save Recording'
document.body.classList.add('recording')
recording = true
recorder = new MidiWriter.Track()
recorder.setTempo(nx.tempo.value)
}
})
document.querySelector('.loading').classList.remove('loading')
play_next()
}
/* keys */
keys.listen(index => {
nx.offset.value = index
nx.offset.update(index)
})
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