mirror of
https://github.com/Tonejs/Tone.js
synced 2024-11-16 16:48:00 +00:00
91 lines
2.5 KiB
HTML
91 lines
2.5 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://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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</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>
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<tone-explanation label="Synchronizing Visuals">
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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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</tone-explanation>
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<tone-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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</tone-content>
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<tone-drawer>
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<tone-synth collapsed></tone-synth>
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</tone-drawer>
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</tone-example>
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<script type="text/javascript">
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var 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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}).toMaster();
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var loop = new Tone.Pattern(function(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(function(){
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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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//connect the UI with the components
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document.querySelector("tone-play-toggle").bind(Tone.Transport);
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document.querySelector("tone-synth").bind(piano);
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</script>
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</body>
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</html>
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