upload project

libs/amap-wx.js

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+/**
+ * 高德地图微信小程序SDK - 纯定位版
+ * 只负责GPS定位，地址解析由后端处理
+ */
+
+class AMapWX {
+  constructor(options = {}) {
+    this.key = options.key || '';
+    this.version = '1.5.0';
+
+    if (this.key) {
+      console.log(`API Key: ${this.key.substring(0, 8)}...`);
+    }
+  }
+
+  /**
+   * 获取微信定位 - 主要功能
+   * @param {function} callback - 定位回调函数 callback(location, error)
+   * @param {object} options - 定位选项
+   */
+  getWxLocation(callback, options = {}) {
+    const defaultOptions = {
+      type: 'gcj02',
+      isHighAccuracy: true,
+      highAccuracyExpireTime: 4000,
+      ...options
+    };
+
+    wx.getLocation({
+      ...defaultOptions,
+      success: (res) => {
+
+        const location = {
+          longitude: res.longitude,
+          latitude: res.latitude,
+          accuracy: res.accuracy || 0,
+          altitude: res.altitude || 0,
+          speed: res.speed || 0,
+          horizontalAccuracy: res.horizontalAccuracy || 0,
+          verticalAccuracy: res.verticalAccuracy || 0
+        };
+
+        if (typeof callback === 'function') {
+          callback(location, null);
+        }
+      },
+      fail: (err) => {
+        console.error('[AMapWX] 微信定位失败:', err);
+
+        if (typeof callback === 'function') {
+          callback(null, err);
+        }
+      }
+    });
+  }
+
+  /**
+   * 计算两点间距离
+   * @param {object} point1 - 起点 {longitude, latitude}
+   * @param {object} point2 - 终点 {longitude, latitude}
+   * @returns {number} 距离（米）
+   */
+  calculateDistance(point1, point2) {
+    const R = 6371000; // 地球半径（米）
+    const lat1 = point1.latitude * Math.PI / 180;
+    const lat2 = point2.latitude * Math.PI / 180;
+    const deltaLat = (point2.latitude - point1.latitude) * Math.PI / 180;
+    const deltaLng = (point2.longitude - point1.longitude) * Math.PI / 180;
+
+    const a = Math.sin(deltaLat / 2) * Math.sin(deltaLat / 2) +
+              Math.cos(lat1) * Math.cos(lat2) *
+              Math.sin(deltaLng / 2) * Math.sin(deltaLng / 2);
+    const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+
+    return R * c;
+  }
+}
+
+// 创建单例实例
+let amapInstance = null;
+
+const AmapWX = {
+  /**
+   * 获取SDK实例
+   * @param {object} options - 配置选项
+   * @returns {AMapWX}
+   */
+  getInstance(options = {}) {
+    if (!amapInstance) {
+      amapInstance = new AMapWX(options);
+    }
+    return amapInstance;
+  },
+
+  /**
+   * 重置SDK实例
+   * @param {object} options - 配置选项
+   * @returns {AMapWX}
+   */
+  resetInstance(options = {}) {
+    amapInstance = new AMapWX(options);
+    return amapInstance;
+  }
+};
+
+// 导出模块
+module.exports = {
+  AMapWX,
+  AmapWX
+};