mirror of
https://github.com/Tonejs/Tone.js
synced 2024-12-27 03:53:07 +00:00
94 lines
2.7 KiB
HTML
94 lines
2.7 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>Analyser</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://cdnjs.cloudflare.com/ajax/libs/webcomponentsjs/2.4.3/webcomponents-bundle.js"></script>
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<link href="https://fonts.googleapis.com/css?family=Material+Icons&display=block" rel="stylesheet"/>
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<script src="../build/Tone.js"></script>
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<script src="./js/tone-ui.js"></script>
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<script src="./js/components.js"></script>
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</head>
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<body>
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<style type="text/css">
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#Notes{
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width: 100%;
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height: 20px;
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position: relative;
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margin-bottom: 10px;
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}
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.Note {
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width: 20%;
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height: 100%;
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position: relative;
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float: left;
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background-color: black;
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opacity: 0;
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transition: opacity 0.5s;
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}
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.Note.active {
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opacity: 1;
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transition-duration: 0.1s;
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}
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</style>
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<tone-example label="Synchronizing Visuals">
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<div slot="explanation">
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Audio scheduling and rendering visuals should always be kept separate. Instead of triggering visuals from within a scheduled event callback, schedule a 'deferred' callback using Tone.Draw which will be invoked on an animation frame at the exact moment of the scheduled event.
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<br><br>
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For more information see <a href="https://github.com/Tonejs/Tone.js/wiki/Performance">this wiki article</a>.
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</div>
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<div id="content">
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<div id="Notes">
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<div id="C4" class="Note"></div>
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<div id="E4" class="Note"></div>
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<div id="G4" class="Note"></div>
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<div id="B4" class="Note"></div>
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<div id="D5" class="Note"></div>
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</div>
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<tone-play-toggle></tone-play-toggle>
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</div>
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</tone-example>
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<script type="text/javascript">
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const piano = new Tone.Synth({
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oscillator: {
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type: "fmsine4",
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modulationType: "square"
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}
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}).toDestination();
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const loop = new Tone.Pattern(((time, note) => {
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piano.triggerAttackRelease(note, "16n", time);
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// Draw.schedule takes a callback and a time to invoke the callback
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Tone.Draw.schedule(() => {
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// the callback synced to the animation frame at the given time
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const noteElement = document.querySelector("#"+note);
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noteElement.classList.add("active");
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setTimeout(() => {
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noteElement.classList.remove("active");
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}, 100);
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}, time);
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}), ["C4", "E4", "G4", "B4", "D5"]).start(0);
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loop.interval = "16n";
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Tone.Transport.lookAhead = 0.5;
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drawer().add({
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tone: piano,
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title: "Piano",
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});
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// connect the UI with the components
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document.querySelector("tone-play-toggle").addEventListener("start", () => Tone.Transport.start());
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document.querySelector("tone-play-toggle").addEventListener("stop", () => Tone.Transport.stop());
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</script>
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</body>
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</html>
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