Tone.js/examples/stepSequencer.html
2020-07-18 17:20:19 -07:00

57 lines
2 KiB
HTML

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Step Sequencer</title>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link rel="icon" type="image/png" sizes="174x174" href="./favicon.png">
<script src="https://cdnjs.cloudflare.com/ajax/libs/webcomponentsjs/2.4.3/webcomponents-bundle.js"></script>
<link href="https://fonts.googleapis.com/css?family=Material+Icons&display=block" rel="stylesheet"/>
<script src="../build/Tone.js"></script>
<script src="./js/tone-ui.js"></script>
<script src="./js/components.js"></script>
<style type="text/css">
tone-transport {
margin-bottom: 10px;
}
</style>
</head>
<body>
<tone-example label="Step Sequencer">
<tone-loader></tone-loader>
<div slot="explanation">
<a href="https://tonejs.github.io/docs/Transport">Tone.Transport</a>
is the application-wide timekeeper. It's clock source enables sample-accurate scheduling as well as tempo-curves and automation. This example uses Tone.Sequence to invoke a callback every 16th note.
</div>
<div id="content">
<tone-play-toggle></tone-play-toggle>
<tone-slider label="tempo" units="bpm" min="60" max="240" value="120"></tone-slider>
<tone-step-sequencer></tone-step-sequencer>
</div>
</tone-example>
<script type="text/javascript">
const keys = new Tone.Players({
urls: {
0: "A1.mp3",
1: "Cs2.mp3",
2: "E2.mp3",
3: "Fs2.mp3",
},
fadeOut: "64n",
baseUrl: "https://tonejs.github.io/audio/casio/"
}).toDestination();
document.querySelector("tone-play-toggle").addEventListener("start", () => Tone.Transport.start());
document.querySelector("tone-play-toggle").addEventListener("stop", () => Tone.Transport.stop());
document.querySelector("tone-slider").addEventListener("input", (e) => Tone.Transport.bpm.value = parseFloat(e.target.value));
document.querySelector("tone-step-sequencer").addEventListener("trigger", ({ detail }) => {
keys.player(detail.row).start(detail.time, 0, "16t");
});
</script>
</body>
</html>