HarmonyOS 指南针功能实现？

Question

提供了地磁传感器接口，能拿到x，y，z磁场强度，怎么根据x，y，z的值获取指南针的方向和角度呢，有简易demo吗？

Answer 1

以下为方向传感器的三个值xyz获取的代码demo实例：

import sensor from "@kit.SensorServiceKit"
import { BusinessError } from '@kit.BasicServicesKit';
try {
  sensor.once(sensor.SensorId.ORIENTATION, (data: sensor.OrientationResponse) => {
    console.info('Succeeded in the device rotating at an angle around the X axis: ' + data.beta);
    console.info('Succeeded in the device rotating at an angle around the Y axis: ' + data.gamma);
    console.info('Succeeded in the device rotating at an angle around the Z axis: ' + data.alpha);
  });
} catch (error) {
  let e: BusinessError.BusinessError = error as BusinessError.BusinessError;
  console.error(`Failed to invoke once. Code: ${e.code}, message: ${e.message}`);
}