i

src/utils/index.ts

@@ -0,0 +1,29 @@
+// 经纬度计算距离
+export function calculateDistance(
+    lat1: number,
+    lon1: number,
+    lat2: number,
+    lon2: number
+): string {
+    const R = 6371; // 地球平均半径（单位：千米）
+
+    const dLat = toRadians(lat2 - lat1);
+    const dLon = toRadians(lon2 - lon1);
+
+    const a =
+        Math.sin(dLat / 2) * Math.sin(dLat / 2) +
+        Math.cos(toRadians(lat1)) *
+            Math.cos(toRadians(lat2)) *
+            Math.sin(dLon / 2) *
+            Math.sin(dLon / 2);
+
+    const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+
+    const distance = R * c;
+    return distance.toFixed(2);
+}
+
+// 将角度转换为弧度
+function toRadians(degrees: number): number {
+    return (degrees * Math.PI) / 180;
+}