fix 完善定位精确度问题

@@ -2,7 +2,7 @@
  * @Author: hookehuyr hookehuyr@gmail.com
  * @Date: 2022-05-26 23:52:36
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2024-12-25 14:49:43
+ * @LastEditTime: 2024-12-25 16:00:31
  * @FilePath: /data-table/src/App.vue
  * @Description:
 -->
@@ -169,7 +169,7 @@ onMounted(async () => {
           const targetLng = form_setting.geofence_center_longitude;
           const radius = form_setting.geofence_circle_radius; // 半径 1000 米
           wx.getLocation({
-            type: 'wgs84', // 默认为wgs84的gps坐标，如果要返回直接给openLocation用的火星坐标，可传入'gcj02'
+            type: 'gcj02', // 默认为wgs84的gps坐标，如果要返回直接给openLocation用的火星坐标，可传入'gcj02'
             success: function (res) {
               let currentLat = res.latitude; // 纬度，浮点数，范围为90 ~ -90
               let currentLng = res.longitude; // 经度，浮点数，范围为180 ~ -180。

 /*
  * @Date: 2024-07-31 17:19:25
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2024-12-25 15:09:33
+ * @LastEditTime: 2024-12-25 16:02:17
  * @FilePath: /data-table/src/utils/tools.js
  * @Description: 文件描述
  */
@@ -225,16 +225,21 @@ const isInViewport = (el) => { // 判断元素是否在可视区域
 //   return distance <= radius;
 // }
 
-const isWithinRadius = (currentLat, currentLng, targetLat, targetLng, radius) => {
-  const earthRadius = 6371; // 地球平均半径，单位为千米
-  const toRadians = (angle) => angle * (Math.PI / 180);
-  let dLat = toRadians(targetLat - currentLat);
-  let dLng = toRadians(targetLng - currentLng);
-  let a = Math.sin(dLat / 2) * Math.sin(dLat / 2) +
-          Math.cos(toRadians(currentLat)) * Math.cos(toRadians(targetLat)) *
-          Math.sin(dLng / 2) * Math.sin(dLng / 2);
-  let c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
-  let distance = earthRadius * c;
+function calculateDistance(lat1, lng1, lat2, lng2) {
+  var that = this;
+  let rad1 = lat1 * Math.PI / 180.0;
+  let rad2 = lat2 * Math.PI / 180.0;
+  let a = rad1 - rad2;
+  let b = lng1 * Math.PI / 180.0 - lng2 * Math.PI / 180.0;
+  let s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(rad1) * Math.cos(
+    rad2) * Math.pow(
+    Math.sin(b / 2), 2)));
+  s = s * 6378137; // 地球半径改为米
+  s = Math.round(s); // 四舍五入取整，直接返回米
+  return s; // 返回距离，单位为米
+}
+function isWithinRadius(currentLat, currentLng, targetLat, targetLng, radius) {
+  const distance = calculateDistance(currentLat, currentLng, targetLat, targetLng);
   return distance <= radius;
 }