mirror of
https://github.com/Tonejs/Tone.js
synced 2024-11-16 08:38:00 +00:00
75 lines
2.2 KiB
HTML
75 lines
2.2 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Step Sequencer</title>
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<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
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<link rel="icon" type="image/png" sizes="174x174" href="./favicon.png">
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<script src="https://unpkg.com/@webcomponents/webcomponentsjs@^2/webcomponents-bundle.js"></script>
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<script src="../build/Tone.js"></script>
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<script src="./js/tonejs-ui.js"></script>
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<style type="text/css">
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tone-transport {
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margin-bottom: 10px;
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}
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</style>
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</head>
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<body>
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<tone-example>
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<tone-loader></tone-loader>
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<tone-explanation label="Step Sequencer">
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<a href="https://tonejs.github.io/docs/Transport">Tone.Transport</a>
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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.
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</tone-explanation>
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<tone-content>
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<tone-transport></tone-transport>
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<tone-step-sequencer></tone-step-sequencer>
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</tone-content>
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</tone-example>
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<script type="text/javascript">
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//setup a polyphonic sampler
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var keys = new Tone.Players({
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"A" : "./audio/casio/A1.[mp3|ogg]",
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"C#" : "./audio/casio/Cs2.[mp3|ogg]",
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"E" : "./audio/casio/E2.[mp3|ogg]",
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"F#" : "./audio/casio/Fs2.[mp3|ogg]",
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}, {
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"volume" : -10,
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"fadeOut" : "64n",
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}).toMaster();
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//the notes
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var noteNames = ["F#", "E", "C#", "A"];
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var loop = new Tone.Sequence(function(time, col){
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var column = document.querySelector("tone-step-sequencer").currentColumn;
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column.forEach(function(val, i){
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if (val){
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//slightly randomized velocities
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var vel = Math.random() * 0.5 + 0.5;
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keys.get(noteNames[i]).start(time, 0, "32n", 0, vel);
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}
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});
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//set the columne on the correct draw frame
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Tone.Draw.schedule(function(){
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document.querySelector("tone-step-sequencer").setAttribute("highlight", col);
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}, time);
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}, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15], "16n").start(0);
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//bind the interface
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document.querySelector("tone-transport").bind(Tone.Transport);
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Tone.Transport.on("stop", () => {
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setTimeout(() => {
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document.querySelector("tone-step-sequencer").setAttribute("highlight", "-1");
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}, 100);
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});
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</script>
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</body>
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</html>
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