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• 构造函数
• 特性
• 方法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

RelativeOrientationSensor 接口的 Sensor APIs describes the device's physical orientation without regard to the Earth's reference coordinate system.

To use this sensor, the user must grant permission to the 'accelerometer' ，和 'gyroscope' device sensors through the 权限 API。

If a feature policy blocks use of a feature it is because your code is inconsistent with the policies set on your server. This is not something that would ever be shown to a user. See Feature-Policy for implementation instructions.

构造函数

RelativeOrientationSensor.RelativeOrientationSensor()

创建新的 RelativeOrientationSensor 对象。

特性

No specific properties; inherits methods from its ancestors OrientationSensor and 传感器 .

事件处理程序

No specific event handlers; inherits methods from its ancestor, 传感器 .

方法

No specific methods; inherits methods from its ancestors OrientationSensor and 传感器 .

范例

基本范例

The following example, which is loosely based on Intel's Orientation Phone demo ,  instantiates an RelativeOrientationSensor with a frequency of 60 times a second.

Note that the Intel demo this is based on uses the AbsoluteOreintationSensor . On each reading it uses OrientationSensor.quaternion to rotate a visual model of a phone.

const options = { frequency: 60, referenceFrame: 'device' };
const sensor = new RelativeOrientationSensor(options);
sensor.addEventListener('reading', () => {
  // model is a Three.js object instantiated elsewhere.
  model.quaternion.fromArray(sensor.quaternion).inverse();
});
sensor.addEventListener('error', error => {
  if (event.error.name == 'NotReadableError') {
    console.log("Sensor is not available.");
  }
});
sensor.start();
					

Permissions Example

Using orientation sensors requires requsting permissions for multiple device sensors. Becuase the 权限 uses promises, a good way to request permissions is to use Promise.all .

const sensor = new RelativeOrientationSensor();
Promise.all([navigator.permissions.query({ name: "accelerometer" }),
             navigator.permissions.query({ name: "gyroscope" })])
       .then(results => {
         if (results.every(result => result.state === "granted")) {
           sensor.start();
           ...
         } else {
           console.log("No permissions to use RelativeOrientationSensor.");
         }
   });
					

规范

规范	状态	注释
Orientation Sensor The definition of 'RelativeOrientationSensor' in that specification.	候选推荐	初始定义。

浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
RelativeOrientationSensor	Chrome 69	Edge ≤79	Firefox ?	IE ?	Opera 56	Safari ?	WebView Android 69	Chrome Android 69	Firefox Android ?	Opera Android 48	Safari iOS ?	Samsung Internet Android 10.0
RelativeOrientationSensor() 构造函数	Chrome 69	Edge ≤79	Firefox ?	IE ?	Opera 56	Safari ?	WebView Android 69	Chrome Android 69	Firefox Android ?	Opera Android 48	Safari iOS ?	Samsung Internet Android 10.0

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

元数据

• 最后修改： Dec 4, 2019

相关话题

1. RelativeOrientationSensor
2. 构造函数

   1. RelativeOrientationSensor()
3. 继承：

   1. OrientationSensor
   2. 传感器
   3. EventTarget