exporting all midi notes... add pedal tone option

3 files changed, 65 insertions, 16 deletions

diff --git a/client/index.js b/client/index.js
index 3f48bd3..fef9b0c 100644
--- a/client/index.js
+++ b/client/index.js
@@ -30,6 +30,8 @@ const DEFAULT_BPM = 60
 
 let recorder = null
 let recording = false
+let paused = false
+let playTimeout
 
 midi_init()
 
@@ -44,7 +46,8 @@ const mass_fields = [
   return a
 }, {})
 
-let i = 0, mass_i = 0, datasets = {}, dataset = {}, bounds = {}, diff = []
+let i = 0, max_i = 0, mass_i = 0
+let datasets = {}, dataset = {}, bounds = {}, diff = []
 let play_fn = play_sequence
 data.load().then(lists => {
   console.log(lists)
@@ -63,12 +66,15 @@ data.load().then(lists => {
   datasets["Mass Shootings"].name = "Mass Shootings"
   datasets["Mass Shootings"].play_fn = play_mass_shootings
   const lines = datasets["Mass Shootings"].lines.reverse()
-  const [min_y, ...rest] = lines[0][mass_fields.date].split('/')
+  const [min_y, ...rest_a] = lines[0][mass_fields.date].split('/')
+  const [max_y, ...rest_b] = lines[lines.length-1][mass_fields.date].split('/')
 
   datasets["Mass Shootings"].dates = lines.map(row => {
     const [y, m, d] = row[mass_fields.date].split('/')
     return (parseInt(y) - parseInt(min_y)) * 12 + parseInt(m)
   })
+  max_i = (parseInt(max_y) - parseInt(min_y)) * 12 + parseInt(12)
+  console.log('max i', max_i)
   datasets["Mass Shootings"].data = lines
   datasets["Mass Shootings"].lines = [lines.map(row => row[mass_fields.total_victims])]
   requestAudioContext(ready)
@@ -102,7 +108,7 @@ function play_mass_shootings(i, bounds, diff, note_time, channel="all", exportin
   const n = rows[y][x]
   const total = dataset.dates.length
   let notes = [], midi_notes = [], cases = [], timings
-  console.log(i, mass_i, dataset.dates[mass_i])
+  console.log(i, mass_i, dataset.dates[mass_i], channel, exporting)
   while (i >= dataset.dates[mass_i] && mass_i < total) {
     notes.push(dataset.lines[0][mass_i])
     cases.push(dataset.data[mass_i][mass_fields.date] + ' ' + dataset.data[mass_i][mass_fields.case] +
@@ -148,7 +154,9 @@ function play_mass_shootings(i, bounds, diff, note_time, channel="all", exportin
   } else {
     i += 1
   }
-  kalimba.play(220, -12)
+
+  const pedal_freq = scales.current().index(nx.pedal_tone.value, nx.octave.value)
+  kalimba.play(pedal_freq, -12)
   if (notes.length) {
     mass_rest = 0
     return [i, midi_notes, timings, mass_rest]
@@ -160,8 +168,10 @@ function play_mass_shootings(i, bounds, diff, note_time, channel="all", exportin
 /* play next note according to sonification */
 
 function play_next(){
+  if (paused) return
   let note_time = 120000 / Tone.Transport.bpm.value * note_values[nx.timing.active][0]
-  setTimeout(play_next, note_time)
+  clearTimeout(playTimeout)
+  playTimeout = setTimeout(play_next, note_time)
   let [new_i, notes, timings] = play_fn(i, bounds, diff, note_time)
   i = new_i
   if (recording) {
@@ -171,6 +181,16 @@ function play_next(){
   }
 }
 
+function play() {
+  i = 0
+  mass_i = 0
+  paused = false
+  play_next()
+}
+function pause() {
+  paused = true
+}
+
 /* bind selects */
 
 function pick_dataset(key){
@@ -254,9 +274,28 @@ function ready() {
   })
   update_value_on_change(nx.interval, '#interval', true)
 
+  nx.pedal_tone = new Nexus.Dial('#pedal_tone', {
+    size: dial_size,
+    min: -24,
+    max: 24,
+    step: 1,
+    value: -7,
+  })
+  update_value_on_change(nx.pedal_tone, '#pedal_tone', true)
+
+  const play_button = document.querySelector('#play')
+  play_button.addEventListener('click', () => {
+    play()
+  })
+
+  const pause_button = document.querySelector('#pause')
+  pause_button.addEventListener('click', () => {
+    pause()
+  })
+
   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)
+    export_pattern_as_midi(dataset.name, bounds, diff, nx.tempo.value, nx.timing.active, play_fn, max_i)
   })
 
   const record_midi_button = document.querySelector('#record_midi')
@@ -285,7 +324,7 @@ function ready() {
   document.querySelector('#scale').value = '14'
   scales.pick(14)
 
-  play_next()
+  // play_next()
 }
 
 /* keys */
diff --git a/client/lib/midi.js b/client/lib/midi.js
index d51aeff..449abc0 100644
--- a/client/lib/midi.js
+++ b/client/lib/midi.js
@@ -142,31 +142,34 @@ export function play_interval_sequence(i, bounds, diff, note_time, channel="all"
 
 /* generate a 1-track midi file by calling the play function repeatedly */
 
-export function export_pattern_as_midi(datasetName, bounds, diff, tempo, timingIndex, play_fn) {
+export function export_pattern_as_midi(datasetName, bounds, diff, tempo, timingIndex, play_fn, max_i) {
   // const behavior = document.querySelector('#behavior').value
   const { rows } = bounds
   // let count = behavior === 'sequence' ? rows[0].length * rows.length : rows.length
-  let count = rows[0].length
+  max_i = max_i || rows[0].length
   let notes, timings, wait
   let note_time
   // let timing = note_values[timingIndex][2]
   let midi_track = new MidiWriter.Track()
+  let next_i
   midi_track.setTempo(tempo)
-  for (let i = 0, len = count; i < len; i++) {
-    [i, notes, timings, wait] = play_fn(i, bounds, note_time, "all", true)
+  for (let i = 0, len = max_i; i < len; i++) {
+    [next_i, notes, timings, wait] = play_fn(i, bounds, diff, note_time, "all", true)
     // if (timing.length) {
     //   note_time = timing[i % timing.length]
     // } else {
     //   note_time = timing
     // }
     // midi_track.addEvent(new MidiWriter.NoteEvent({ pitch: notes, duration: 't' + note_time }))
-    console.log(i, notes, timings, wait)
+    // console.log(i, notes, timings, wait)
     for (let j = 0; j < notes.length; j++) {
+      console.log(i, j, notes[j], timings[j], wait)
       midi_track.addEvent(new MidiWriter.NoteEvent({
         pitch: notes[j],
         duration: 't' + timings[j],
-        wait: (j === 0) ? wait : 0,
+        wait,
       }))
+      wait = 0
     }
   }
   const writer = new MidiWriter.Writer([midi_track])
diff --git a/index.html b/index.html
index 8ea82b8..5aa9922 100644
--- a/index.html
+++ b/index.html
@@ -9,14 +9,16 @@
 <div class='tools'>
 	<div>
 		<h2>Sonification of gun violence</h2>
+		<div class='row'>
+			<div id='cases'></div>
+		</div>
 		<div class='buttons'>
+			<button id="play">Play</button>
+			<button id="pause">Pause</button>
 			<button id="export_midi">Export dataset as MIDI</button>
 			<button id="record_midi">Record MIDI</button>
 			<span id='recording_msg'>Recording</span>
 		</div>
-		<div class='row'>
-			<div id='cases'></div>
-		</div>
 		<label>
 			<span>scale</span>
 			<select id="scale"></select>
@@ -60,6 +62,11 @@
 				<span class='val'></span>
 				<span>Interval</span>
 			</div>
+			<div class='block'>
+				<div id="pedal_tone"></div>
+				<span class='val'></span>
+				<span>Pedal tone</span>
+			</div>
 		</div>
 	</div>
 </div>