first commit

2024-09-27 01:09:52 +08:00
commit 0cf9eef5bf
149 changed files with 3476 additions and 0 deletions
--- a/socketEnd/utils/utils.js
+++ b/socketEnd/utils/utils.js
@@ -0,0 +1,34 @@
+class utils {
+
+    /**
+     * 计算两经纬度点之间的距离(单位：米)
+     * @param {*} lat1  纬度1
+     * @param {*} lng1 经度1
+     * 
+     * @param {*} lat2 纬度2
+     * @param {*} lng2 经度2
+     * @returns 
+     */
+     
+    caculateLL(lng1, lat1, lng2 = 117.325426, lat2 = 31.794477) {
+        var radLat1 = (lat1 * Math.PI) / 180.0;
+        var radLat2 = (lat2 * Math.PI) / 180.0;
+        var a = radLat1 - radLat2;
+        var b = (lng1 * Math.PI) / 180.0 - (lng2 * Math.PI) / 180.0;
+        var s =
+          2 *
+          Math.asin(
+            Math.sqrt(
+              Math.pow(Math.sin(a / 2), 2) +
+                Math.cos(radLat1) *
+                  Math.cos(radLat2) *
+                  Math.pow(Math.sin(b / 2), 2)
+            )
+          );
+        s = s * 6378.137;
+        s = Math.round(s * 10000) / 10;
+        return s;
+    }
+}
+
+module.exports = new utils();