本地音频播放的3D可视化

3D可视化本地音频播放效果. 单击左上角的按钮以选择本地音频. 加载几秒钟后音频可视化效果音频可视化效果，将出现3D立体音频播放效果. 这是非常酷，非常漂亮. 如果您未重新选择“音频文件将循环播放”，请选择接受.

类别: html5>音频难度: 基本

查看演示下载资源: 34个下载资源下载点: 30点

* {
  margin: 0;
  padding: 0;
}
body {
  /*   background: linear-gradient(-135deg, #FC656C, #11879E); */
  overflow: hidden;
  width: 100%;
  height: 100%;
}
.color {
  background: linear-gradient(-45deg, #48dfda, #20a0a4);
}
.black {
  background: #000;
}
.wrapper .file {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 10px;
  box-sizing: border-box;
  border: 2px solid #fff;
  letter-spacing: 0.01em;
  color: #fff;
  cursor: pointer;
  transition: opacity .4s;
  z-index: 2;
}
.wrapper .file:hover {
  opacity: .8;
}
.wrapper .file input {
  display: none;
}
.wrapper canvas {
  vertical-align: bottom;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

<div class="wrapper" id="wrapper">
  <label class="file" for="file">
    请选择本地音频文件
    <input id="file" type="file">
  </label>
</div>

this.update = function () {
	var offset = new THREE.Vector3();
	// so camera.up is the orbit axis
	var quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) );
	var quatInverse = quat.clone().inverse();
	var lastPosition = new THREE.Vector3();
	var lastQuaternion = new THREE.Quaternion();
	return function update() {
		var position = scope.object.position;
		offset.copy( position ).sub( scope.target );
		// rotate offset to "y-axis-is-up" space
		offset.applyQuaternion( quat );
		// angle from z-axis around y-axis
		spherical.setFromVector3( offset );
		if ( scope.autoRotate && state === STATE.NONE ) {
			rotateLeft( getAutoRotationAngle() );
		}
		spherical.theta += sphericalDelta.theta;
		spherical.phi += sphericalDelta.phi;
		// restrict theta to be between desired limits
		spherical.theta = Math.max( scope.minAzimuthAngle, Math.min( scope.maxAzimuthAngle, spherical.theta ) );
		// restrict phi to be between desired limits
		spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );
		spherical.makeSafe();
		spherical.radius *= scale;
		// restrict radius to be between desired limits
		spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );
		// move target to panned location
		scope.target.add( panOffset );
		offset.setFromSpherical( spherical );
		// rotate offset back to "camera-up-vector-is-up" space
		offset.applyQuaternion( quatInverse );
		position.copy( scope.target ).add( offset );
		scope.object.lookAt( scope.target );
		if ( scope.enableDamping === true ) {
			sphericalDelta.theta *= ( 1 - scope.dampingFactor );
			sphericalDelta.phi *= ( 1 - scope.dampingFactor );
		} else {
			sphericalDelta.set( 0, 0, 0 );
		}
		scale = 1;
		panOffset.set( 0, 0, 0 );
		// update condition is:
		// min(camera displacement, camera rotation in radians)^2 > EPS
		// using small-angle approximation cos(x/2) = 1 - x^2 / 8
		if ( zoomChanged ||
			lastPosition.distanceToSquared( scope.object.position ) > EPS ||
			8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {
			scope.dispatchEvent( changeEvent );
			lastPosition.copy( scope.object.position );
			lastQuaternion.copy( scope.object.quaternion );
			zoomChanged = false;
			return true;
		}
		return false;
	};
}();

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本地音频播放的3D可视化

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本地音频播放的3D可视化

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