javascript
/
three.js
mirrorاز https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webaudio - visualizer</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				background:#777;
				padding:0;
				margin:0;
				font-weight: bold;
				overflow:hidden;
			}

			#info {
				position: absolute;
				top: 0px;
				width: 100%;
				color: #ffffff;
				padding: 5px;
				font-family:Monospace;
				font-size:13px;
				text-align:center;
			}

			a {
				color: #ffffff;
			}
		</style>

		<script src="../build/three.js"></script>
		<script src="js/Detector.js"></script>

		<script id="vertexShader" type="x-shader/x-vertex">

			varying vec2 vUv;

			void main() {

				vUv = uv;

				gl_Position = vec4( position, 1.0 );

			}

		</script>

		<script id="fragmentShader" type="x-shader/x-fragment">

			uniform sampler2D tAudioData;
			varying vec2 vUv;

			void main() {

				vec3 backgroundColor = vec3( 0.125, 0.125, 0.125 );
				vec3 color = vec3( 1.0, 1.0, 0.0 );

				float f = texture2D( tAudioData, vec2( vUv.x, 0.0 ) ).r;

				float i = step( vUv.y, f ) * step( f - 0.0125, vUv.y );

				gl_FragColor = vec4( mix( backgroundColor, color, i ), 1.0 );

			}

		</script>

	</head>
	<body>

	<div id="container"></div>
	<div id="info">
		<a href="https://threejs.org" target="_blank" rel="noopener noreferrer">three.js</a> webaudio - visualizer<br/>
		music by <a href="http://www.newgrounds.com/audio/listen/376737" target="_blank" rel="noopener">skullbeatz</a>
	</div>

	<script>

	if ( ! Detector.webgl ) Detector.addGetWebGLMessage();

	var scene, camera, renderer, analyser, uniforms;

	init();
	animate();

	function init() {

		var fftSize = 128;

		//

		var container = document.getElementById( 'container' );

		renderer = new THREE.WebGLRenderer( { antialias: true } );
		renderer.setSize( window.innerWidth, window.innerHeight );
		renderer.setClearColor( 0x000000 );
		renderer.setPixelRatio( window.devicePixelRatio );
		container.appendChild( renderer.domElement );

		scene = new THREE.Scene();

		camera = new THREE.Camera();

		//

		var listener = new THREE.AudioListener();

		var audio = new THREE.Audio( listener );

		var mediaElement = new Audio( 'sounds/376737_Skullbeatz___Bad_Cat_Maste.mp3' );
		mediaElement.loop = true;
		mediaElement.play();

		audio.setMediaElementSource( mediaElement );

		analyser = new THREE.AudioAnalyser( audio, fftSize );

		//

		uniforms = {

			tAudioData: { value: new THREE.DataTexture( analyser.data, fftSize / 2, 1, THREE.LuminanceFormat ) }

		};

		var material = new THREE.ShaderMaterial( {

			uniforms: uniforms,
			vertexShader: document.getElementById( 'vertexShader' ).textContent,
			fragmentShader: document.getElementById( 'fragmentShader' ).textContent

		} );

		var geometry = new THREE.PlaneBufferGeometry( 1, 1 );

		var mesh = new THREE.Mesh( geometry, material );
		scene.add( mesh );

		//

		window.addEventListener( 'resize', onResize, false );

	}

	function onResize() {

		renderer.setSize( window.innerWidth, window.innerHeight );

	}

	function animate() {

		requestAnimationFrame( animate );

		render();

	}

	function render() {

		analyser.getFrequencyData();

		uniforms.tAudioData.value.needsUpdate = true;

		renderer.render( scene, camera );

	}

	</script>

	</body>
</html>