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• Interfaces based on OrientationSensor
• 特性
• 方法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

OrientationSensor 接口的 Sensor APIs is the base class for orientation sensors. This interface cannot be used directly. Instead it provides properties and methods accessed by interfaces that inherit from it.

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.

Interfaces based on OrientationSensor

Below is a list of interfaces based on the OrientationSensor interface.

• AbsoluteOrientationSensor
• RelativeOrientationSensor

特性

OrientationSensor.quaternion

Returns a four element 数组 whose elements contain the components of the unit quaternion representing the device's orientation.

方法

OrientationSensor.populateMatrix()

Populates the given object with the rotation matrix based on the latest sensor reading. The rotation maxtrix is shown below.

范例

基本范例

The following example, which is loosely based on Intel's Orientation Phone demo ,  instantiates an AbsoluteOrientationSensor with a frequency of 60 times a second. On each reading it uses OrientationSensor.quaternion to rotate a visual model of a phone.

const options = { frequency: 60, referenceFrame: 'device' };
const sensor = new AbsoluteOrientationSensor(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 AbsoluteOrientationSensor();
Promise.all([navigator.permissions.query({ name: "accelerometer" }),
             navigator.permissions.query({ name: "magnetometer" }),
             navigator.permissions.query({ name: "gyroscope" })])
       .then(results => {
         if (results.every(result => result.state === "granted")) {
           sensor.start();
           ...
         } else {
           console.log("No permissions to use AbsoluteOrientationSensor.");
         }
   });
					

规范

规范	状态	注释
Orientation Sensor The definition of 'OrientationSensor' 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
OrientationSensor	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
populateMatrix	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
quaternion	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： May 21, 2019

相关话题

1. OrientationSensor
2. 特性

   1. quaternion
3. 方法

   1. populateMatrix()
4. 继承：

   1. 传感器
   2. EventTarget