Three 查看平均频率 - W3xue在线HTML/CSS/JS运行工具

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>Three 查看平均频率</title>
  <style>
    body {
      margin: 0;
      overflow: hidden;
      /* 隐藏body窗口区域滚动条 */
    }
  </style>
  <script src="/js/threejs/threer92.js"></script>
  <script src="/example/threejs/solarsystem/files/OrbitControls.js"></script>
</head>

<body>
	  <div id="app">
    <div class="block" style="display:inline;width:500px">
      <el-slider v-model="time" show-input :max=1 :step=0.01></el-slider>
    </div>
  </div>
	
  <script>
    /**
     * 创建场景对象Scene
     */
    var scene = new THREE.Scene();
    var geometry = new THREE.BoxGeometry(100, 100, 100); //创建一个立方体几何对象Geometry
    var material = new THREE.MeshLambertMaterial({
      color: 0x0000ff
    }); //材质对象Material
    var mesh = new THREE.Mesh(geometry, material); //网格模型对象Mesh
    scene.add(mesh); //网格模型添加到场景中
	
	
    //三维坐标系辅助显示
    var AxesHelper = new THREE.AxesHelper(600);
    scene.add(AxesHelper);
    /**
     * 光源设置
     */
    //点光源
    var point = new THREE.PointLight(0xffffff);
    point.position.set(400, 200, 300); //点光源位置
    scene.add(point); //点光源添加到场景中
    //环境光
    var ambient = new THREE.AmbientLight(0x444444);
    scene.add(ambient);
    /**
     * 相机设置
     */
    var width = window.innerWidth; //窗口宽度
    var height = window.innerHeight; //窗口高度
    var k = width / height; //窗口宽高比
    var s = 150; //三维场景显示范围控制系数，系数越大，显示的范围越大
    //创建相机对象
    var camera = new THREE.OrthographicCamera(-s * k, s * k, s, -s, 1, 1000);
    camera.position.set(200, 300, 200); //设置相机位置
    camera.lookAt(scene.position); //设置相机方向(指向的场景对象)
	  
    /**
     * 创建渲染器对象
     */
    var renderer = new THREE.WebGLRenderer();
    renderer.setSize(width, height); //设置渲染区域尺寸
    renderer.setClearColor(0xb9d3ff, 1); //设置背景颜色
    document.body.appendChild(renderer.domElement); //body元素中插入canvas对象
	  
	  
var analyser = null; // 声明一个分析器变量
// 渲染函数
function render() {
  renderer.render(scene, camera); //执行渲染操作
  requestAnimationFrame(render); //请求再次执行渲染函数render，渲染下一帧
  if (analyser) {
    // getAverageFrequency()返回平均音频
    var frequency = analyser.getAverageFrequency();
    mesh.scale.y = 5 * frequency / 256;
    mesh.material.color.r = 3 * frequency / 256;
    // 返回傅里叶变换得到的所有频率
    // console.log(analyser.getFrequencyData())
  }
}
render();

var listener = new THREE.AudioListener() //监听者
var audio = new THREE.Audio(listener); //非位置音频对象
var audioLoader = new THREE.AudioLoader(); //音频加载器
// 加载音频文件
audioLoader.load('/img/song.mp3', function(AudioBuffer) {
  audio.setBuffer(AudioBuffer); // 音频缓冲区对象关联到音频对象audio
  audio.setLoop(true); //是否循环
  audio.setVolume(0.5); //音量
  audio.play(); //播放
  // 音频分析器和音频绑定，可以实时采集音频时域数据进行快速傅里叶变换
  analyser = new THREE.AudioAnalyser(audio);
});
	  
  </script>

</body>

</html>

​x
 
<!DOCTYPE html>
<html lang="en">
​
<head>
  <meta charset="UTF-8">
  <title>Three 查看平均频率</title>
  <style>
    body {
      margin: 0;
      overflow: hidden;
      /* 隐藏body窗口区域滚动条 */
    }
  </style>
  <script src="/js/threejs/threer92.js"></script>
  <script src="/example/threejs/solarsystem/files/OrbitControls.js"></script>
</head>
​
<body>
      <div id="app">
    <div class="block" style="display:inline;width:500px">
      <el-slider v-model="time" show-input :max=1 :step=0.01></el-slider>
    </div>
  </div>
    
  <script>
    /**
     * 创建场景对象Scene
     */
    var scene = new THREE.Scene();
    var geometry = new THREE.BoxGeometry(100, 100, 100); //创建一个立方体几何对象Geometry
    var material = new THREE.MeshLambertMaterial({
      color: 0x0000ff
    }); //材质对象Material
    var mesh = new THREE.Mesh(geometry, material); //网格模型对象Mesh
    scene.add(mesh); //网格模型添加到场景中
    
    
    //三维坐标系辅助显示
    var AxesHelper = new THREE.AxesHelper(600);
    scene.add(AxesHelper);
    /**
     * 光源设置
     */
    //点光源
    var point = new THREE.PointLight(0xffffff);
    point.position.set(400, 200, 300); //点光源位置
    scene.add(point); //点光源添加到场景中
    //环境光