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<div class="progress pink">
<div class="indeterminate white"></div>
</div>
<div class="app" style="display: none;">
<div class="sequencer">
<div class="steps"></div>
</div>
<a class="regenerate btn-floating btn-large waves-effect waves-light pink darken-2 pulse">
<i class="material-icons">refresh</i>
</a>
<div class="controls">
<div class="control">
<a class="playpause btn-floating btn-large waves-effect waves-light blue">
<i class="material-icons play-icon">play_arrow</i>
<i class="material-icons pause-icon" style="display: none">pause</i>
</a>
</div>
<div class="control">
<p class="range-field grey-text">
<input type="range" id="density" min="0" max="0.75" value="0.5" step="0.05"> Density
</p>
</div>
<div class="control">
<p class="range-field grey-text">
<input type="range" id="tempo" min="20" max="240" value="120" step="1"> Tempo
</p>
</div>
<div class="control">
<p class="range-field grey-text">
<input type="range" id="swing" min="0.5" max="0.7" value="0.55" step="0.05"> Swing
</p>
</div>
<div class="control">
<p class="range-field grey-text">
<input type="range" id="temperature" class="tooltipped" min="0.5" max="2" value="1.1" step="0.1" data-tooltip="Higher temperatures will make the neural network generates wilder patterns"
data-delay="500"> Temperature
</p>
</div>
</div>
</div>
<div class="info">
<p class="webmidi-enabled" style="display: none;">
Output:
<select class="midi-output"></select>
</p>
<p>This is an experimental drum machine powered by a deep neural network. To use it, define a seed pattern on the left,
and use the “generate” button. A neural network will dream up a continuation to your seed pattern.</p>
<p>Using the
<a href="https://github.com/tensorflow/magenta/tree/master/magenta/models/drums_rnn">Drums RNN</a> and <a href="https://github.com/tensorflow/magenta/tree/master/magenta/models/music_vae">MusicVAE</a> (pretrained) models from
<a href="https://magenta.tensorflow.org/">Google Magenta</a>, and
<a href="https://goo.gl/magenta/js">Magenta.js</a> +
<a href="https://js.tensorflow.org/">TensorFlow.js</a> +
<a href="https://tonejs.github.io/">Tone.js</a>.</p>
<p>A pen by
<a href="https://twitter.com/teropa">@teropa</a>.</p>
</div>
html,
body,
.app {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
background-color: #112;
color: white;
}
.progress {
max-width: 30%;
margin: 45vh auto 55vh auto;
}
.app {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
background: linear-gradient(to right, #010315, #131526);
}
.sequencer,
.controls {
width: 80vw;
}
.controls {
display: flex;
flex-direction: row;
justify-content: space-around;
}
.control {
text-align: center;
}
.control input {
margin-bottom: 20px;
}
.select-wrapper span.caret {
color: inherit; /* Override materialize.css black */
}
.select-wrapper input.select-dropdown {
margin-bottom: 10px;
}
.input-field {
margin-top: 0;
}
input[type='range'] {
border: 0;
}
input[type='range'] + .thumb {
background-color: #2196f3;
}
input[type='range']::-webkit-slider-thumb {
background-color: #2196f3;
}
input[type='range']::-moz-range-thumb {
background-color: #2196f3;
}
input[type='range']::-ms-thumb {
background-color: #2196f3;
}
.control .share {
margin-top: 10px;
}
.midi-output {
max-width: 200px;
margin: 0 auto;
}
.sequencer {
position: relative;
height: 70vh;
margin: 20px 0;
display: flex;
flex-direction: row;
perspective: 1000px;
transform-style: preserve-3d;
}
.sequencer .legend {
flex: 0.75;
display: flex;
flex-direction: column;
}
.drum-class {
display: flex;
align-items: center;
justify-content: flex-start;
margin: 2.5px;
font-size: 12px;
color: #999;
}
.sequencer .steps {
flex: 9;
display: flex;
flex-direction: row;
}
.step {
flex: 1;
display: flex;
flex-direction: column;
transform-style: preserve-3d;
}
.steps {
transform-style: preserve-3d;
}
.gutter {
width: 5px;
}
.gutter.seed-marker {
background-color: #aaa;
margin: 0 10px;
cursor: move;
}
.gutter.seed-marker:hover {
background-color: white;
}
.cell {
margin: 2.5px 0;
background-color: rgba(100, 100, 100, 0.1);
border: 1px solid rgba(100, 100, 100, 0.2);
border-radius: 3px;
z-index: 0;
transition: background-color 0.3s ease;
}
.cell:hover {
background-color: rgba(100, 100, 100, 0.5);
}
.step:not(.regenerating) .cell.on {
background-color: #64b5f6;
opacity: 1;
}
.step.seed .cell.on {
background-color: #e91e63;
}
.regenerate {
position: absolute;
visibility: hidden;
font-size: 30px;
line-height: 56px;
}
.kick {
flex: 2;
margin-bottom: 10px;
}
.snare {
flex: 1;
margin-top: 10px;
margin-bottom: 10px;
}
.hi-hat-closed {
flex: 1;
margin-top: 10px;
}
.hi-hat-open {
flex: 1;
margin-bottom: 10px;
}
.tom-low {
flex: 1;
margin-top: 10px;
}
.tom-mid {
flex: 1;
}
.tom-high {
flex: 1;
margin-bottom: 10px;
}
.clap {
flex: 1;
margin-top: 10px;
}
.rim {
flex: 1;
}
.info {
max-width: 50%;
margin: 100px auto;
text-align: center;
}
const DRUM_CLASSES = [
'Kick',
'Snare',
'Hi-hat closed',
'Hi-hat open',
'Tom low',
'Tom mid',
'Tom high',
'Clap',
'Rim'
];
const TIME_HUMANIZATION = 0.01;
let sampleBaseUrl = 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/969699';
let reverb = new Tone.Convolver(
`${sampleBaseUrl}/small-drum-room.wav`
).toMaster();
reverb.wet.value = 0.35;
let snarePanner = new Tone.Panner().connect(reverb);
new Tone.LFO(0.13, -0.25, 0.25).connect(snarePanner.pan).start();
let drumKit = [
new Tone.Players({
high: `${sampleBaseUrl}/808-kick-vh.mp3`,
med: `${sampleBaseUrl}/808-kick-vm.mp3`,
low: `${sampleBaseUrl}/808-kick-vl.mp3`
}).toMaster(),
new Tone.Players({
high: `${sampleBaseUrl}/flares-snare-vh.mp3`,
med: `${sampleBaseUrl}/flares-snare-vm.mp3`,
low: `${sampleBaseUrl}/flares-snare-vl.mp3`
}).connect(snarePanner),
new Tone.Players({
high: `${sampleBaseUrl}/808-hihat-vh.mp3`,
med: `${sampleBaseUrl}/808-hihat-vm.mp3`,
low: `${sampleBaseUrl}/808-hihat-vl.mp3`
}).connect(new Tone.Panner(-0.5).connect(reverb)),
new Tone.Players({
high: `${sampleBaseUrl}/808-hihat-open-vh.mp3`,
med: `${sampleBaseUrl}/808-hihat-open-vm.mp3`,
low: `${sampleBaseUrl}/808-hihat-open-vl.mp3`
}).connect(new Tone.Panner(-0.5).connect(reverb)),
new Tone.Players({
high: `${sampleBaseUrl}/slamdam-tom-low-vh.mp3`,
med: `${sampleBaseUrl}/slamdam-tom-low-vm.mp3`,
low: `${sampleBaseUrl}/slamdam-tom-low-vl.mp3`
}).connect(new Tone.Panner(-0.4).connect(reverb)),
new Tone.Players({
high: `${sampleBaseUrl}/slamdam-tom-mid-vh.mp3`,
med: `${sampleBaseUrl}/slamdam-tom-mid-vm.mp3`,
low: `${sampleBaseUrl}/slamdam-tom-mid-vl.mp3`
}).connect(reverb),
new Tone.Players({
high: `${sampleBaseUrl}/slamdam-tom-high-vh.mp3`,
med: `${sampleBaseUrl}/slamdam-tom-high-vm.mp3`,
low: `${sampleBaseUrl}/slamdam-tom-high-vl.mp3`
}).connect(new Tone.Panner(0.4).connect(reverb)),
new Tone.Players({
high: `${sampleBaseUrl}/909-clap-vh.mp3`,
med: `${sampleBaseUrl}/909-clap-vm.mp3`,
low: `${sampleBaseUrl}/909-clap-vl.mp3`
}).connect(new Tone.Panner(0.5).connect(reverb)),
new Tone.Players({
high: `${sampleBaseUrl}/909-rim-vh.wav`,
med: `${sampleBaseUrl}/909-rim-vm.wav`,
low: `${sampleBaseUrl}/909-rim-vl.wav`
}).connect(new Tone.Panner(0.5).connect(reverb))
];
let midiDrums = [36, 38, 42, 46, 41, 43, 45, 49, 51];
let reverseMidiMapping = new Map([
[36, 0],
[35, 0],
[38, 1],
[27, 1],
[28, 1],
[31, 1],
[32, 1],
[33, 1],
[34, 1],
[37, 1],
[39, 1],
[40, 1],
[56, 1],
[65, 1],
[66, 1],
[75, 1],
[85, 1],
[42, 2],
[44, 2],
[54, 2],
[68, 2],
[69, 2],
[70, 2],
[71, 2],
[73, 2],
[78, 2],
[80, 2],
[46, 3],
[67, 3],
[72, 3],
[74, 3],
[79, 3],
[81, 3],
[45, 4],
[29, 4],
[41, 4],
[61, 4],
[64, 4],
[84, 4],
[48, 5],
[47, 5],
[60, 5],
[63, 5],
[77, 5],
[86, 5],
[87, 5],
[50, 6],
[30, 6],
[43, 6],
[62, 6],
[76, 6],
[83, 6],
[49, 7],
[55, 7],
[57, 7],
[58, 7],
[51, 8],
[52, 8],
[53, 8],
[59, 8],
[82, 8]
]);
let temperature = 1.2;
let outputs = {
internal: {
play: (drumIdx, velocity, time) => {
drumKit[drumIdx].get(velocity).start(time);
}
}
};
let rnn = new mm.MusicRNN(
'https://storage.googleapis.com/download.magenta.tensorflow.org/tfjs_checkpoints/music_rnn/drum_kit_rnn'
);
let vae = new mm.MusicVAE(
'https://storage.googleapis.com/download.magenta.tensorflow.org/tfjs_checkpoints/music_vae/drums_2bar_hikl_small'
);
Promise.all([
rnn.initialize(),
vae.initialize(),
new Promise(res => Tone.Buffer.on('load', res))
]).then(([vars]) => {
let state = {
patternLength: 32,
seedLength: 4,
swing: 0.55,
pattern: [[0], [], [2]].concat(_.times(32, i => [])),
tempo: 120
};
let stepEls = [],
hasBeenStarted = false,
sequence,
densityRange = null,
activeOutput = 'internal';
function generatePattern(seed, length) {
let seedSeq = toNoteSequence(seed);
return rnn
.continueSequence(seedSeq, length, temperature)
.then(r => seed.concat(fromNoteSequence(r, length)));
}
function getStepVelocity(step) {
if (step % 4 === 0) {
return 'high';
} else if (step % 2 === 0) {
return 'med';
} else {
return 'low';
}
}
function humanizeTime(time) {
return time - TIME_HUMANIZATION / 2 + Math.random() * TIME_HUMANIZATION;
}
function playPattern() {
sequence = new Tone.Sequence(
(time, { drums, stepIdx }) => {
let isSwung = stepIdx % 2 !== 0;
if (isSwung) {
time += (state.swing - 0.5) * Tone.Time('8n').toSeconds();
}
let velocity = getStepVelocity(stepIdx);
drums.forEach(d => {
let humanizedTime = stepIdx === 0 ? time : humanizeTime(time);
outputs[activeOutput].play(d, velocity, time);
visualizePlay(humanizedTime, stepIdx, d);
});
},
state.pattern.map((drums, stepIdx) => ({ drums, stepIdx })),
'16n'
).start();
}
function visualizePlay(time, stepIdx, drumIdx) {
Tone.Draw.schedule(() => {
if (!stepEls[stepIdx]) return;
let animTime = Tone.Time('2n').toMilliseconds();
let cellEl = stepEls[stepIdx].cellEls[drumIdx];
if (cellEl.classList.contains('on')) {
let baseColor = stepIdx < state.seedLength ? '#e91e63' : '#64b5f6';
cellEl.animate(
[
{
transform: 'translateZ(-100px)',
backgroundColor: '#fad1df'
},
{
transform: 'translateZ(50px)',
offset: 0.7
},
{ transform: 'translateZ(0)', backgroundColor: baseColor }
],
{ duration: animTime, easing: 'cubic-bezier(0.23, 1, 0.32, 1)' }
);
}
}, time);
}
function renderPattern(regenerating = false) {
let seqEl = document.querySelector('.sequencer .steps');
while (stepEls.length > state.pattern.length) {
let { stepEl, gutterEl } = stepEls.pop();
stepEl.remove();
if (gutterEl) gutterEl.remove();
}
for (let stepIdx = 0; stepIdx < state.pattern.length; stepIdx++) {
let step = state.pattern[stepIdx];
let stepEl, gutterEl, cellEls;
if (stepEls[stepIdx]) {
stepEl = stepEls[stepIdx].stepEl;
gutterEl = stepEls[stepIdx].gutterEl;
cellEls = stepEls[stepIdx].cellEls;
} else {
stepEl = document.createElement('div');
stepEl.classList.add('step');
stepEl.dataset.stepIdx = stepIdx;
seqEl.appendChild(stepEl);
cellEls = [];
}
stepEl.style.flex = stepIdx % 2 === 0 ? state.swing : 1 - state.swing;
if (!gutterEl && stepIdx < state.pattern.length - 1) {
gutterEl = document.createElement('div');
gutterEl.classList.add('gutter');
seqEl.insertBefore(gutterEl, stepEl.nextSibling);
} else if (gutterEl && stepIdx >= state.pattern.length) {
gutterEl.remove();
gutterEl = null;
}
if (gutterEl && stepIdx === state.seedLength - 1) {
gutterEl.classList.add('seed-marker');
} else if (gutterEl) {
gutterEl.classList.remove('seed-marker');
}
for (let cellIdx = 0; cellIdx < DRUM_CLASSES.length; cellIdx++) {
let cellEl;
if (cellEls[cellIdx]) {
cellEl = cellEls[cellIdx];
} else {
cellEl = document.createElement('div');
cellEl.classList.add('cell');
cellEl.classList.add(_.kebabCase(DRUM_CLASSES[cellIdx]));
cellEl.dataset.stepIdx = stepIdx;
cellEl.dataset.cellIdx = cellIdx;
stepEl.appendChild(cellEl);
cellEls[cellIdx] = cellEl;
}
if (step.indexOf(cellIdx) >= 0) {
cellEl.classList.add('on');
} else {
cellEl.classList.remove('on');
}
}
stepEls[stepIdx] = { stepEl, gutterEl, cellEls };
let stagger = stepIdx * (300 / (state.patternLength - state.seedLength));
setTimeout(() => {
if (stepIdx < state.seedLength) {
stepEl.classList.add('seed');
} else {
stepEl.classList.remove('seed');
if (regenerating) {
stepEl.classList.add('regenerating');
} else {
stepEl.classList.remove('regenerating');
}
}
}, stagger);
}
setTimeout(repositionRegenerateButton, 0);
}
function repositionRegenerateButton() {
let regenButton = document.querySelector('.regenerate');
let sequencerEl = document.querySelector('.sequencer');
let seedMarkerEl = document.querySelector('.gutter.seed-marker');
let regenLeft =
sequencerEl.offsetLeft +
seedMarkerEl.offsetLeft +
seedMarkerEl.offsetWidth / 2 -
regenButton.offsetWidth / 2;
let regenTop =
sequencerEl.offsetTop +
seedMarkerEl.offsetTop +
seedMarkerEl.offsetHeight / 2 -
regenButton.offsetHeight / 2;
regenButton.style.left = `${regenLeft}px`;
regenButton.style.top = `${regenTop}px`;
regenButton.style.visibility = 'visible';
}
function regenerate() {
let seed = _.take(state.pattern, state.seedLength);
renderPattern(true);
return generatePattern(seed, state.patternLength - seed.length).then(
result => {
state.pattern = result;
onPatternUpdated();
setDensityValue();
updateDensityRange();
}
);
}
function onPatternUpdated() {
if (sequence) {
sequence.dispose();
sequence = null;
}
renderPattern();
}
function toggleStep(cellEl) {
if (state.pattern && cellEl.classList.contains('cell')) {
let stepIdx = +cellEl.dataset.stepIdx;
let cellIdx = +cellEl.dataset.cellIdx;
let isOn = cellEl.classList.contains('on');
if (isOn) {
_.pull(state.pattern[stepIdx], cellIdx);
cellEl.classList.remove('on');
} else {
state.pattern[stepIdx].push(cellIdx);
cellEl.classList.add('on');
}
if (sequence) {
sequence.at(stepIdx, { stepIdx, drums: state.pattern[stepIdx] });
}
setDensityValue();
densityRange = null;
}
}
function setDensityValue() {
let totalCellCount = state.pattern.length * 9;
let activeCellCount = _.sum(state.pattern.map(p => p.length));
let density = activeCellCount / totalCellCount;
let roundedDensity = Math.round(density / 0.05) * 0.05;
document.querySelector('#density').value = roundedDensity;
}
function updateDensityRange(
density = +document.querySelector('#density').value
) {
let stepsDown = density / 0.05;
let stepsUp = (0.75 - density) / 0.05;
let stepsBeyond = 0.25 / 0.05;
let emptySeq = toNoteSequence([]);
let fullSeq = toNoteSequence(
_.times(state.pattern.length, () => _.range(9))
);
let currentSeq = toNoteSequence(state.pattern);
densityRange = [];
let interpsUp = stepsDown > 0 ? vae.interpolate([emptySeq, currentSeq], stepsDown) : Promise.resolve([]);
let interpsDown = stepsUp > 0 ? vae.interpolate(
[currentSeq, fullSeq],
stepsUp + stepsBeyond
) : Promise.resolve([]);
interpsDown.then(interps => {
for (let noteSeq of interps) {
densityRange.push(fromNoteSequence(noteSeq, state.pattern.length));
}
}).then(() => densityRange.push(state.pattern))
.then(() => interpsUp)
.then(interps => {
for (let noteSeq of interps) {
if (stepsUp-- > 0) {
densityRange.push(fromNoteSequence(noteSeq, state.pattern.length));
}
}
});
}
function toNoteSequence(pattern) {
return mm.sequences.quantizeNoteSequence(
{
ticksPerQuarter: 220,
totalTime: pattern.length / 2,
timeSignatures: [
{
time: 0,
numerator: 4,
denominator: 4
}
],
tempos: [
{
time: 0,
qpm: 120
}
],
notes: _.flatMap(pattern, (step, index) =>
step.map(d => ({
pitch: midiDrums[d],
startTime: index * 0.5,
endTime: (index + 1) * 0.5
}))
)
},
1
);
}
function fromNoteSequence({ notes }, patternLength) {
let res = _.times(patternLength, () => []);
for (let { pitch, quantizedStartStep } of notes) {
res[quantizedStartStep].push(reverseMidiMapping.get(pitch));
}
return res;
}
function setSwing(newSwing) {
state.swing = newSwing;
renderPattern();
}
function setPatternLength(newPatternLength) {
if (newPatternLength < state.patternLength) {
state.pattern.length = newPatternLength;
} else {
for (let i = state.pattern.length; i < newPatternLength; i++) {
state.pattern.push([]);
}
}
let lengthRatio = newPatternLength / state.patternLength;
state.seedLength = Math.max(
1,
Math.min(newPatternLength - 1, Math.round(state.seedLength * lengthRatio))
);
state.patternLength = newPatternLength;
onPatternUpdated();
if (Tone.Transport.state === 'started') {
playPattern();
}
}
function updatePlayPauseIcons() {
if (Tone.Transport.state === 'started') {
document.querySelector('.playpause .pause-icon').style.display = null;
document.querySelector('.playpause .play-icon').style.display = 'none';
} else {
document.querySelector('.playpause .play-icon').style.display = null;
document.querySelector('.playpause .pause-icon').style.display = 'none';
}
}
function encodeState() {
return Object.keys(state)
.reduce((a, k) => {
a.push(k + '=' + JSON.stringify(state[k]));
return a;
}, [])
.join('&');
}
WebMidi.enable(err => {
if (err) {
console.error('WebMidi could not be enabled', err);
return;
}
document.querySelector('.webmidi-enabled').style.display = 'block';
let outputSelector = document.querySelector('.midi-output');
function onOutputsChange() {
while (outputSelector.firstChild) {
outputSelector.firstChild.remove();
}
let internalOption = document.createElement('option');
internalOption.value = 'internal';
internalOption.innerText = 'Internal drumkit';
outputSelector.appendChild(internalOption);
for (let output of WebMidi.outputs) {
let option = document.createElement('option');
option.value = output.id;
option.innerText = output.name;
outputSelector.appendChild(option);
}
onActiveOutputChange('internal');
}
function onActiveOutputChange(id) {
if (activeOutput !== 'internal') {
outputs[activeOutput] = null;
}
activeOutput = id;
if (activeOutput !== 'internal') {
let output = WebMidi.getOutputById(id);
outputs[id] = {
play: (drumIdx, velo, time) => {
let delay = (time - Tone.now()) * 1000;
let duration = Tone.Time('16n').toMilliseconds();
let velocity = { high: 1, med: 0.75, low: 0.5 };
output.playNote(midiDrums[drumIdx], 1, {
time: delay > 0 ? `+${delay}` : WebMidi.now,
velocity,
duration
});
}
};
}
for (let option of Array.from(outputSelector.children)) {
option.selected = option.value === id;
}
}
onOutputsChange();
WebMidi.addListener('connected', onOutputsChange);
WebMidi.addListener('disconnected', onOutputsChange);
$(outputSelector)
.on('change', evt => onActiveOutputChange(evt.target.value))
.material_select();
});
document.querySelector('.app').addEventListener('click', event => {
if (event.target.classList.contains('cell')) {
toggleStep(event.target);
}
});
document.querySelector('.regenerate').addEventListener('click', event => {
event.preventDefault();
event.currentTarget.classList.remove('pulse');
document.querySelector('.playpause').classList.remove('pulse');
regenerate().then(() => {
if (!hasBeenStarted) {
Tone.context.resume();
Tone.Transport.start();
updatePlayPauseIcons();
hasBeenStarted = true;
}
if (Tone.Transport.state === 'started') {
setTimeout(() => playPattern(), 0);
}
});
});
document.querySelector('.playpause').addEventListener('click', event => {
event.preventDefault();
document.querySelector('.playpause').classList.remove('pulse');
if (Tone.Transport.state !== 'started') {
Tone.context.resume();
Tone.Transport.start();
playPattern();
updatePlayPauseIcons();
hasBeenStarted = true;
} else {
if (sequence) {
sequence.dispose();
sequence = null;
}
Tone.Transport.pause();
updatePlayPauseIcons();
}
});
let draggingSeedMarker = false;
document.querySelector('.app').addEventListener('mousedown', evt => {
let el = evt.target;
if (
el.classList.contains('gutter') &&
el.classList.contains('seed-marker')
) {
draggingSeedMarker = true;
evt.preventDefault();
}
});
document.querySelector('.app').addEventListener('mouseup', () => {
draggingSeedMarker = false;
});
document.querySelector('.app').addEventListener('mouseover', evt => {
if (draggingSeedMarker) {
let el = evt.target;
while (el) {
if (el.classList.contains('step')) {
let stepIdx = +el.dataset.stepIdx;
if (stepIdx > 0) {
state.seedLength = stepIdx;
renderPattern();
}
break;
}
el = el.parentElement;
}
}
});
document.querySelector('#density').addEventListener('input', evt => {
let newDensity = +evt.target.value;
let patternIndex = Math.round(newDensity / 0.05);
if (_.isNull(densityRange)) {
updateDensityRange(newDensity);
}
if (
densityRange &&
patternIndex >= 0 &&
patternIndex < densityRange.length - 1
) {
state.pattern = densityRange[patternIndex];
renderPattern();
if (sequence) {
state.pattern.forEach((drums, stepIdx) =>
sequence.at(stepIdx, { stepIdx, drums })
);
}
}
});
document
.querySelector('#swing')
.addEventListener('input', evt => setSwing(+evt.target.value));
document
.querySelector('#temperature')
.addEventListener('input', evt =>
temperature = +evt.target.value
);
document
.querySelector('#tempo')
.addEventListener(
'input',
evt => (Tone.Transport.bpm.value = state.tempo = +evt.target.value)
);
window.addEventListener('resize', repositionRegenerateButton);
renderPattern();
setDensityValue();
document.querySelector('.progress').remove();
document.querySelector('.app').style.display = null;
});
Also see: Tab Triggers