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<link rel="stylesheet" href="./assets/css/main.css" />
<script src="./assets/js/prism.js" defer></script>
<script src="./assets/js/audioshowkit.js"></script>
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<h1>Visualizing Music</h1>
<p>This is the fun part. We can use a {@link VisualizedMusicPlayer} and a {@link MusicPlaylist} to create a music player that is like {@link MusicPlayer} but with the ability to automatically fetch the current {@link Visualizer}. On top of that, it then routes that visualizer data to {@link VisualizerUpdateManager} which can be to make much more refined mappings.</p>
This library comes with a variety of mapping tools:
<ul>
<li>Want to map ranges of frequency bins to a plethora of element style properties? Take a look at {@link module:mappings/numeric} and {@link module:mappings/dimensions}!</li>
<li>Check out {@link module:patterns/canvas} for built in canvas patterns.</li>
<li>We even do font size and color with the {@link module:mappings/text} module!</li>
</ul>
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<h2>Instantiation</h2>
<p>Exactly like when instantiating a normal music player, you will need a playlist. Other than that, it's simple.</p>
<pre><code class="language-js">
const ask = window.audioshowkit; // Get a reference to the audioshowkit stuff.
const playlist = previousPlaylist; // We are assuming you have a playlist ready.
const player = new ask.player.VisualizedMusicPlayer(playlist) // Creates a new music player with the playlist.
</code></pre>
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<h2>Playback</h2>
<p>Since the usage of playback is the same as a normal {@link module:player/MusicPlayer}, see [the MusicPlayer tutorial]{@tutorial MusicPlayer} for more information.</p>
<div id="playback-ctrls">
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<h2>Visualization</h2>
<p>The actual visualization can be performed in a variety of ways. We can use canvases, or even better, actual HTML elements!</p>
<h3>The first one here shows mapping the width.</h3>
<div class="result" style="width: 10rem;">
<div id="width-map-demo" style="height: 2rem; background-color: black;"></div>
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<p>Produced by the following code...</p>
<pre><code class="language-js">
const widthElem = document.getElementById("width-map-demo"); // selecting an element.
ask.mappings.dimensions.mapWidth({ // the mapping function for width.
element: widthElem, // the element to map.
growLower: 2, // the minimum width
growUpper: 8, // the maximum width
unit: "rem", // the units the minimum and maximum are described in.
lowerBin: 24, // the lower frequency bin.
upperBin: 80, // the upper frequency bin.
visUpdateRouter: player.visUpdateRouter, // the visualizer to use (we got ours from the VisMusicPlayer).
interpolator: ask.support.easings.createEaseLinear(2.5) // an interpolation function to make transitions between frames cleaner.
});
</code></pre>
<h3>This next one does the same, except with height.</h3>
<div class="result" style="height: 10rem;">
<div id="height-map-demo" style="height: 2rem; background-color: black;"></div>
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<p>Produced by the following code</p>
<pre><code class="language-js">
const heightElem = document.getElementById("height-map-demo"); // Only big difference is the function being called.
ask.mappings.dimensions.mapHeight({
element: heightElem,
growLower: 2, // height smallest can be 2 rem, tallest can be 8 rem.
growUpper: 8,
unit: "rem",
lowerBin: 80, // Changed the bin range just for fun.
upperBin: 120,
visUpdateRouter: player.visUpdateRouter,
interpolator: ask.support.easings.createEaseLinear(2.5)
});
</code></pre>
<h3>What's that? you want multiple mappings on one?</h3>
<p>Of course it's possible</p>
<div class="result" style="height: 10rem; min-width: 10rem;">
<div id="square-map-demo" style="height: 2rem; width: 2rem; background-color: black;"></div>
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<p>Produced by the following code</p>
<pre><code class="language-js">
const squareElem = document.getElementById("square-map-demo"); // Same stuff as before..
const squareElemConf = { // Use an object for commonly used mappings.
element: squareElem,
growLower: 0.5,
growUpper: 8,
unit: "rem",
lowerBin: 128,
upperBin: 160,
visUpdateRouter: player.visUpdateRouter,
interpolator: ask.support.easings.createEaseLinear(2.5)
}
ask.mappings.dimensions.mapWidth(squareElemConf); // Apply them easily!
ask.mappings.dimensions.mapHeight(squareElemConf);
</code></pre>
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<script>
const ask = window.audioshowkit;
const playlist = new ask.player.MusicPlaylist("Awesome Music");
playlist.add("./assets/audio/XXI.mp3", "XXI", "QR");
playlist.add("./assets/audio/moments.mp3", "Moments", "Lost Identities x Robbie Rosen");
const player = new ask.player.VisMusicPlayer(playlist);
const playbackCtrlsElem = document.getElementById("playback-ctrls");
const prevElem = player.generatePreviousElement();
const playElem = player.generatePlayElement();
const nextElem = player.generateNextElement();
playbackCtrlsElem.appendChild(prevElem);
playbackCtrlsElem.appendChild(playElem);
playbackCtrlsElem.appendChild(nextElem);
const widthElem = document.getElementById("width-map-demo");
ask.mappings.dimensions.mapWidth({
element: widthElem,
growLower: 2,
growUpper: 8,
unit: "rem",
lowerBin: 24,
upperBin: 60,
visUpdateRouter: player.visUpdateRouter,
interpolator: ask.support.easings.createEaseLinear(2.5)
});
const heightElem = document.getElementById("height-map-demo");
ask.mappings.dimensions.mapHeight({
element: heightElem,
growLower: 2,
growUpper: 8,
unit: "rem",
lowerBin: 80,
upperBin: 120,
visUpdateRouter: player.visUpdateRouter,
interpolator: ask.support.easings.createEaseLinear(2.5)
});
const squareElem = document.getElementById("square-map-demo");
const squareElemConf = {
element: squareElem,
growLower: 0.5,
growUpper: 8,
unit: "rem",
lowerBin: 128,
upperBin: 160,
visUpdateRouter: player.visUpdateRouter,
interpolator: ask.support.easings.createEaseLinear(2.5)
}
ask.mappings.dimensions.mapWidth(squareElemConf);
ask.mappings.dimensions.mapHeight(squareElemConf);
</script>
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