336 lines
8.5 KiB
JavaScript
336 lines
8.5 KiB
JavaScript
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/**
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* 地图配置文件
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* 包含高德地图配置、权限管理、地图工具函数等
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*/
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const config = require('../config/config.js');
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// 高德地图配置
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const MAP_CONFIG = {
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// 高德地图Key - 需要在高德开放平台申请
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amapKey: config.amapKey || '9281427fb1b9c4e1c2acf097a3194781',
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// 地图默认设置
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defaults: {
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latitude: 39.908823, // 北京天安门
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longitude: 116.39747,
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scale: 16,
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minScale: 3,
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maxScale: 20,
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showLocation: true,
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showScale: true,
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showCompass: true,
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enableOverlooking: false,
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enableZoom: true,
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enableScroll: true,
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enableRotate: false,
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enable3D: false
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},
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// 定位配置
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location: {
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type: 'gcj02', // 坐标系类型：wgs84、gcj02
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isHighAccuracy: true,
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highAccuracyExpireTime: 4000,
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timeout: 10000,
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cacheTimeout: 60000 // 位置缓存时间
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},
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// 标记点配置
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markers: {
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// 当前用户标记 - 使用默认样式
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currentUser: {
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width: 30,
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height: 30,
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anchor: { x: 0.5, y: 1 }
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},
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// 好友标记 - 使用默认样式
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friend: {
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width: 25,
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height: 25,
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anchor: { x: 0.5, y: 1 }
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},
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// 陌生人标记 - 使用默认样式
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stranger: {
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width: 20,
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height: 20,
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anchor: { x: 0.5, y: 1 }
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}
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},
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// 地图样式
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style: {
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normal: 'normal', // 普通地图
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satellite: 'satellite', // 卫星地图
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traffic: 'traffic' // 交通地图
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}
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};
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// 权限配置
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const PERMISSION_CONFIG = {
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// 位置权限
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location: {
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scope: 'scope.userLocation',
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name: '位置信息',
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description: '用于获取您的位置信息，实现定位和附近功能'
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},
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// 其他权限
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camera: {
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scope: 'scope.camera',
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name: '摄像头',
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description: '用于拍照和扫码功能'
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},
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album: {
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scope: 'scope.album',
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name: '相册',
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description: '用于选择图片功能'
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}
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};
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/**
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* 地图工具类
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*/
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class MapUtils {
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/**
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* 检查位置权限
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*/
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static checkLocationPermission() {
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return new Promise((resolve, reject) => {
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wx.getSetting({
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success: (res) => {
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console.log('权限设置:', res.authSetting);
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if (res.authSetting['scope.userLocation'] === false) {
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// 用户拒绝过位置权限
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reject({
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type: 'denied',
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message: '位置权限被拒绝，请在设置中开启'
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});
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} else if (res.authSetting['scope.userLocation'] === true) {
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// 用户已授权
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resolve(true);
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} else {
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// 用户未授权，需要请求授权
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resolve(false);
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}
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},
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fail: (error) => {
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console.error('获取权限设置失败:', error);
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reject({
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type: 'error',
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message: '获取权限设置失败'
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});
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}
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});
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});
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}
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/**
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* 请求位置权限
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*/
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static requestLocationPermission() {
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return new Promise((resolve, reject) => {
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wx.authorize({
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scope: 'scope.userLocation',
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success: () => {
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console.log('位置权限授权成功');
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resolve(true);
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},
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fail: (error) => {
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console.warn('位置权限授权失败:', error);
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// 引导用户去设置页面
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wx.showModal({
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title: '位置权限申请',
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content: 'FindMe需要访问您的位置信息，请在设置中开启位置权限',
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confirmText: '去设置',
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cancelText: '取消',
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success: (res) => {
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if (res.confirm) {
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wx.openSetting({
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success: (settingRes) => {
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if (settingRes.authSetting['scope.userLocation']) {
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resolve(true);
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} else {
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reject({
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type: 'denied',
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message: '位置权限被拒绝'
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});
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}
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},
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fail: () => {
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reject({
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type: 'error',
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message: '打开设置页面失败'
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});
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}
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});
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} else {
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reject({
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type: 'cancelled',
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message: '用户取消授权'
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});
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}
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}
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});
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}
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});
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});
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}
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/**
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* 获取位置（带权限检查）
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*/
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static async getLocation(options = {}) {
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try {
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// 检查权限
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const hasPermission = await this.checkLocationPermission();
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if (!hasPermission) {
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// 请求权限
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await this.requestLocationPermission();
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}
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// 获取位置
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return new Promise((resolve, reject) => {
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const locationOptions = {
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...MAP_CONFIG.location,
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...options,
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success: (res) => {
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console.log('获取位置成功:', res);
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resolve({
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latitude: res.latitude,
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longitude: res.longitude,
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accuracy: res.accuracy || 0,
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altitude: res.altitude || 0,
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speed: res.speed || -1,
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timestamp: Date.now()
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});
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},
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fail: (error) => {
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console.error('获取位置失败:', error);
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reject({
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type: 'location_error',
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message: error.errMsg || '定位失败',
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error: error
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});
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}
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};
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wx.getLocation(locationOptions);
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});
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} catch (error) {
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console.error('位置获取流程失败:', error);
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throw error;
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}
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}
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/**
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* 计算两点距离
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*/
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static calculateDistance(point1, point2) {
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const lat1 = point1.latitude * Math.PI / 180;
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const lon1 = point1.longitude * Math.PI / 180;
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const lat2 = point2.latitude * Math.PI / 180;
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const lon2 = point2.longitude * Math.PI / 180;
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const R = 6371000; // 地球半径（米）
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const dLat = lat2 - lat1;
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const dLon = lon2 - lon1;
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const a = Math.sin(dLat/2) * Math.sin(dLat/2) +
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Math.cos(lat1) * Math.cos(lat2) *
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Math.sin(dLon/2) * Math.sin(dLon/2);
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const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
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return R * c;
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}
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/**
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* 格式化距离显示
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*/
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static formatDistance(distance) {
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if (distance < 1000) {
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return `${Math.round(distance)}米`;
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} else if (distance < 10000) {
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return `${(distance / 1000).toFixed(1)}公里`;
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} else {
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return `${Math.round(distance / 1000)}公里`;
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}
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}
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/**
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* 创建标记点
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*/
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static createMarker(data, type = 'friend') {
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const markerConfig = MAP_CONFIG.markers[type] || MAP_CONFIG.markers.friend;
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return {
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id: data.id || Date.now(),
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latitude: data.latitude,
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longitude: data.longitude,
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width: markerConfig.width,
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height: markerConfig.height,
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anchor: markerConfig.anchor,
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callout: data.showCallout ? {
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content: data.nickname || '用户',
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color: '#333333',
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fontSize: 12,
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borderRadius: 4,
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bgColor: '#ffffff',
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padding: 8,
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display: 'ALWAYS'
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} : null,
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customData: {
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userId: data.userId,
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nickname: data.nickname,
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avatar: data.avatar,
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distance: data.distance,
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lastUpdateTime: data.lastUpdateTime
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}
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};
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}
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/**
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* 获取地图区域
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*/
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static getMapRegion(centerPoint, markers = []) {
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if (markers.length === 0) {
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return {
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latitude: centerPoint.latitude,
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longitude: centerPoint.longitude,
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scale: MAP_CONFIG.defaults.scale
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};
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}
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// 计算包含所有标记点的区域
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let minLat = centerPoint.latitude;
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let maxLat = centerPoint.latitude;
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let minLng = centerPoint.longitude;
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let maxLng = centerPoint.longitude;
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markers.forEach(marker => {
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minLat = Math.min(minLat, marker.latitude);
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maxLat = Math.max(maxLat, marker.latitude);
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minLng = Math.min(minLng, marker.longitude);
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maxLng = Math.max(maxLng, marker.longitude);
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});
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// 添加边距
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const latPadding = (maxLat - minLat) * 0.3;
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const lngPadding = (maxLng - minLng) * 0.3;
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return {
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latitude: (minLat + maxLat) / 2,
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longitude: (minLng + maxLng) / 2,
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scale: Math.max(Math.min(18 - Math.log2(Math.max(maxLat - minLat + latPadding, maxLng - minLng + lngPadding) * 111000), 18), 8)
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};
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}
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}
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module.exports = {
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MAP_CONFIG,
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PERMISSION_CONFIG,
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MapUtils
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};
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