屏幕旋转计算，有什么好的方案？

import sensor from '@ohos.sensor'; 
import base from '@ohos.base'; 
 
export function onDegree(callback: base.Callback<string>): void { 
  sensor.on(sensor.SensorId.GRAVITY, (data: sensor.GravityResponse) => { 
    let degree: number = -1; 
    let rotation: string = 'INVALID'; 
    degree = CalDegree(data.x, data.y, data.z) 
    console.log(degree + "  zzz") 
    if (degree >= 0 && (degree <= 30 || degree >= 330)) { 
      rotation = "ROTATION_0"; 
    } else if (degree >= 60 && degree <= 120) { // Use ROTATION_90 when degree range is [60, 120] 
      rotation = "ROTATION_90"; 
    } else if (degree >= 150 && degree <= 210) { // Use ROTATION_180 when degree range is [150, 210] 
      rotation = "ROTATION_180"; 
    } else if (degree >= 240 && degree <= 300) { // Use ROTATION_270 when degree range is [240, 300] 
      rotation = "ROTATION_270"; 
    } 
    callback(rotation); 
  }); 
} 
 
function CalDegree(x: number, y: number, z: number): number { 
  let degree: number = -1; 
  // 3 为 有效_增量_角度_阈值_系数 
  if ((x * x + y * y) * 3 < z * z) { 
    return degree; 
  } 
  degree = 90 - (Number)(Math.round(Math.atan2(y, -x) / Math.PI * 180)); 
  return degree >= 0 ? degree % 360 : degree % 360 + 360; 
}