AudioVisualizerAutomota/index.html at master · AidanMM/AudioVisualizerAutomota · GitHub

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<html>
  <head>
  <title>Living Visualizer</title>
  <link href='https://fonts.googleapis.com/css?family=Orbitron:900' rel='stylesheet' type='text/css'>
    <style>
	body {
        background: #000000;
         font-family: tahoma, verdana, sans serif;

		margin: 0 0 0 0;
	}

	h1
	{
		font-family: 'Orbitron' , sans-serif;
		text-align: center;
		color: #ffffff;
	}
	div{
		text-align:center;
		color: #ffffff;
	}
	controls{
		margin-left:10px;
		margin-top:10px;
	}
	canvas{
		background: black;
		padding-left: 0;
		padding-right: 0;
		margin-left: auto;
		margin-right: auto;
		display: block;
	}


    </style>

  </head>

  <body>
  <h1>Living Visualizer</h1>
    <canvas></canvas>
	<div id="controls">
		<audio controls loop></audio>
		<br/>
		<label>Track:
			<select id="trackSelect" >
				<option value="media/17Years.mp3">17 Years</option>
				<option value="media/XP_Sounds.mp3">XP Song</option>
				<option value="media/Skrillex.mp3">Skrillex</option>
				<option value="media/OneWingedAngel.mp3">One Winged Angel</option>
				<option value="media/Lamprey.mp3">Lamprey</option>
				<option value="media/New Adventure Theme.mp3">New Adventure Theme</option>
				<option value="media/Peanuts Theme.mp3">Peanuts Theme</option>
				<option value="media/The Picard Song.mp3">The Picard Song</option>
			</select>
		</label>
		<br/>
		<span>
			<label for="lineCheck">Draw Lines</label>
			<input type="checkbox" id="lineCheck" checked = "checked" >
		</span>
			<select id ="lineSelect">
				<option value ="straight">Straight Lines</option>
				<option value ="quadratic" selected>Quadratic Lines</option>
				<option value ="cubic">Cubic Lines</option>
				<option value = "random">Random</option>
			</select>
		<br/>
		<span>
			<label for="circleCheck">Draw Cells</label>
			<input type="checkbox" id="circleCheck" checked >
		</span>

		<span>
			<label for="filterCheck">Pixel Filter</label>
			<input type="checkbox" id="filterCheck">
		</span>
		<br/>
		Audio Effect:
		<select id ="audioSelect">
			<option value ="none">No Audio Effect</option>
			<option value ="reverb">Reverb Effect</option>
			<option value ="filter">Lowpass Filter Effect</option>
		</select>
		<br/>
		Waveform Generation
		<input type="checkbox" id="waveformGen">

		<div>
			<label for="lineWidthSlider">Line Width</label>
			<input id="lineWidthSlider" type ="range" min ="0.1" max="5.0" step ="0.1" value ="1.0"/>
		</div>

		<div>
			<label for="radiusSlider">Cell Size</label>
			<input id="radiusSlider" type ="range" min ="0.75" max="5.0" step ="0.1" value ="1.0"/>
		</div>

		<div>
			<label for="reverbSlider">Reverb Strength</label>
			<input id="reverbSlider" type ="range" min ="0.01" max="1.0" step ="0.05" value =".2"/>
		</div>

		<div>
			<label for="audioFilterSlider">Filter Frequency</label>
			<input id="audioFilterSlider" type ="range" min ="100" max="1000" step ="020" value ="440"/>
		</div>

		<p id="status">???</p>
	</div>

  </body>

  <script src='setup.js'></script>
  <script src='automota.js'></script>
  <script>
  (function(){
	"use strict";
  	Draw.init()
   	window.onload = init;
    	var colony;
	var NUM_SAMPLES = 256;
	var SOUND_6 = 'media/XP_Sounds.mp3', SOUND_4 = 'media/New Adventure Theme.mp3', SOUND_2 = 'media/Peanuts Theme.mp3';
	var SOUND_3 = 'media/The Picard Song.mp3', SOUND_5 = 'media/Skrillex.mp3', SOUND_1 = 'media/17Years.mp3';
	var SOUND_7 = 'media/OneWingedAngel.mp3', SOUND_8 = 'media/Lamprey.mp3';
	var audioElement,  analyserNode;
	var lineStyle = "quadratic", lineWidth = 1, radiusScale = 1;
	var drawLines = true, drawCircles = true, pixelFilter = false, waveFormData = false;
	var audioEffect = "none";
	var filter, filterFrequency = 440, reverbScale = .3;
	var audioCtx, analyserNode, sourceNode, convolver;
	function init() {
		// Initialize audio systems
		audioElement = document.querySelector('audio');
		analyserNode = createWebAudioContextWithAnalyserNode(audioElement);
		setupUI();
		playStream(audioElement,SOUND_1);
		colony = Colony.create(Draw.canvas.width, Draw.canvas.height, NUM_SAMPLES / 2, NUM_SAMPLES / 2);
		//colony.randomizeState();
		update();
	}

	function createWebAudioContextWithAnalyserNode(audioElement) {
		// create new AudioContext
		// The || is because WebAudio has not been standardized across browsers yet
		// http://webaudio.github.io/web-audio-api/#the-audiocontext-interface
		audioCtx = new (window.AudioContext || window.webkitAudioContext);

		// create an analyser node
		analyserNode = audioCtx.createAnalyser();

		// fft stands for Fast Fourier Transform
		analyserNode.fftSize = NUM_SAMPLES;

		// this is where we hook up the <audio> element to the analyserNode
		sourceNode = audioCtx.createMediaElementSource(audioElement);
		sourceNode.connect(analyserNode);


		//impulse responses from http://noisehack.com/custom-audio-effects-javascript-web-audio-api/
		convolver = audioCtx.createConvolver();
		var noiseBuffer =audioCtx.createBuffer(2, reverbScale * audioCtx.sampleRate, audioCtx.sampleRate);
		var left = noiseBuffer.getChannelData(0);
		var right = noiseBuffer.getChannelData(1);

		for (var i = 0; i < noiseBuffer.length; i++) {
			left[i] = Math.random() * 3 - 1;
			right[i] = Math.random() * 3 - 1;
		}
		convolver.buffer = noiseBuffer;

		//http://www.html5rocks.com/en/tutorials/webaudio/intro/
		filter = audioCtx.createBiquadFilter();
		filter.type='lowpass';
		filter.frequency.value = filterFrequency;
		switch(audioEffect) {
			case "none":
				analyserNode.connect(audioCtx.destination);
			break;

			case "reverb":
				analyserNode.connect(convolver);
				convolver.connect(audioCtx.destination);
			break;

			case "filter":
				analyserNode.connect(filter);
				filter.connect(audioCtx.destination);
			break;
		}

		return analyserNode;
	}
	function setupUI() {
		document.querySelector("#trackSelect").onchange = function(e) {
			playStream(audioElement,e.target.value);
			colony.clearState();
		};

		document.querySelector("#lineSelect").onchange = function(e) {
			lineStyle= e.target.value;
		};

		document.querySelector("#lineWidthSlider").oninput = function(e) {
			lineWidth = e.target.value;
		};

		document.querySelector("#radiusSlider").oninput = function(e) {
			radiusScale = e.target.value;
		};

		document.querySelector("#lineCheck").onchange = function(e) {
			drawLines = e.target.checked;

		};

		document.querySelector("#circleCheck").onchange = function(e) {
			drawCircles = e.target.checked;

		};

		document.querySelector("#waveformGen").onchange = function(e) {
			waveFormData = e.target.checked;
		};

		document.querySelector("#audioFilterSlider").oninput = function(e) {
			filterFrequency = e.target.value;

			filter = audioCtx.createBiquadFilter();
			filter.type='lowpass';
			filter.frequency.value=filterFrequency;
			if(audioEffect=="filter") {
				convolver.disconnect();
				analyserNode.disconnect();
				analyserNode.connect(filter);
				filter.connect(audioCtx.destination);
			}
		};

		document.querySelector("#radiusSlider").oninput = function(e) {
			radiusScale = e.target.value;
		};

		document.querySelector("#filterCheck").onchange = function(e) {
			pixelFilter = e.target.checked;
		};

		document.querySelector("#audioSelect").onchange = function(e) {
			audioEffect= e.target.value;

			switch(audioEffect)
			{
			case "none":
				convolver.disconnect();
				filter.disconnect();
				analyserNode.disconnect();
				analyserNode.connect(audioCtx.destination);
			break;

			case "reverb":
				filter.disconnect();
				analyserNode.disconnect();
				analyserNode.connect(convolver);
				convolver.connect(audioCtx.destination);
			break;

			case "filter":
				convolver.disconnect();
				analyserNode.disconnect();
				analyserNode.connect(filter);
				filter.connect(audioCtx.destination);
			break;
			}
		};


		document.querySelector("#reverbSlider").oninput = function(e) {
			reverbScale = e.target.value;

			var noiseBuffer =audioCtx.createBuffer(2, reverbScale * audioCtx.sampleRate, audioCtx.sampleRate);
			var left = noiseBuffer.getChannelData(0);
			var right = noiseBuffer.getChannelData(1);

			for (var i = 0; i < noiseBuffer.length; i++) {
				left[i] = Math.random() * 2 - 1;
				right[i] = Math.random() * 2 - 1;
			}
			convolver.buffer = noiseBuffer;

			if(audioEffect=="reverb") {
				analyserNode.disconnect();
				analyserNode.connect(convolver);
				convolver.connect(audioCtx.destination);
			}
		};
	}
	function playStream(audioElement,path) {
		audioElement.src = path;
		audioElement.play();
		audioElement.volume = 0.2;
		document.querySelector('#status').innerHTML = "Now playing: " + path;
	}
	function update() {
		var delay = 25;
		setTimeout(function() {
			requestAnimationFrame(update);
			Draw.ctx.fillStyle = "rgba(0,0,0,.1)";
			Draw.ctx.fillRect(0,0,Draw.canvas.width ,Draw.canvas.height );
			colony.draw(Draw.ctx, lineWidth, lineStyle, radiusScale, drawLines, drawCircles);
			colony.update();
			// create a new array of 8-bit integers (0-255)
			var data = new Uint8Array(NUM_SAMPLES);

			// populate the array with the frequency data
			// notice these arrays can be passed "by reference"
			if(!waveFormData) {
				analyserNode.getByteFrequencyData(data);
			} else {
				analyserNode.getByteTimeDomainData(data);
			}

			// loop through the data and draw!
			for(var i=0; i<NUM_SAMPLES / 4; i++) {
				Draw.ctx.fillStyle = 'rgba(0,255,0,0.6)';

				if(data[i] > 100) {
					colony.automota[i][Math.round(colony.ySize / 2)].nextState = Math.round(data[i] / 25);
				}
			}
			var extraCount = 0;
			for(var i=NUM_SAMPLES / 2 - 1; i > NUM_SAMPLES / 4; i--) {
				Draw.ctx.fillStyle = 'rgba(0,255,0,0.6)';

				if(data[extraCount] > 100) {
					colony.automota[i][Math.round(colony.ySize / 2)].nextState = Math.round(data[extraCount] / 25);
				}
				extraCount++;
			}
			if(pixelFilter) {
				manipulatePixels();
			}
		}, delay);
	}
	function manipulatePixels() {
		var imageData = Draw.ctx.getImageData(0, 0, Draw.canvas.width, Draw.canvas.height);
		var data = imageData.data;
		var length = data.length;
		var width = imageData.width;
		for(var i = 0; i < length; i += 4) {
			if(data[i] != 0 || data[1 + 1] != 0) {
				data[i] = Math.round(Math.random() * data[i] * 2 );
				data[i + 1] = 0;
				data[i + 2] = Math.round(Math.random() * data[i + 2] * 2 );
			}

		}
		Draw.ctx.putImageData(imageData, 0, 0);
	}

		// HELPER
	function makeColor(red, green, blue, alpha) {
   		var color='rgba('+red+','+green+','+blue+', '+alpha+')';
   		return color;
	}
  }());

  </script>

</html>