百度GL地图实现某一段路的路况（new BMapGL.DrivingRouteLine）

功能描述：

1.百度地图实现点击地图出现起点，再次点击出现终点（起点终点能拖动）绘制完终点后获取该路的路况并且起点和终点可以拖动实现实时更新（新绘制的路段的）路况

2.地点搜索

效果如下：

关键代码：

javascript">new BMapGL.DrivingRouteLine(this.bdMap, {renderOptions: {map: this.bdMap,enableDragging: true,autoViewport: true,lineLayerStyle: {// strokeTextureUrl: null,showTraffic: true}},onSearchComplete: searchComplete,onPolylinesSet: () => {this.drivingTime = drivingTime;this.drivingDistance = this.convertDistance(drivingDistance);this.pointsArr = deepClone(pointsArr);},});

完整代码：

javascript"><!--* @Description: 百度地图自动获取路段点位 页面* @Author: mhf* @Date: 2024/2/21 11:55
-->
<template><el-dialogwidth="1300px"v-dialog-outdestroy-on-closeappend-to-bodyv-if="dialogVisible":title="title":visible.sync="dialogVisible":before-close="hideDialog":close-on-click-modal="false"><div class="dialog-body"><div id="map-container"></div><div class="dialog-body-search"><el-input@input="searchPlace"@clear="searchPlace"clearablev-model="searchText"size="small"placeholder="输入关键字查询"></el-input></div><div><div class="dialog-body-res" v-if="searchRes.length > 0"><divv-for="(item, index) in searchRes":key="index"@click="chooseIt(item)"><el-tooltipeffect="light":content="item.address + item.title"placement="right-end"overflow><span> {{ item.address + item.title }} </span></el-tooltip></div></div><divclass="dialog-body-none"v-else-if="searchRes.length === 0 && searchText"><em> 没有搜索结果... </em></div></div></div><lineH /><div class="dialog-footer"><el-button @click="hideDialog">取 消</el-button><el-button type="primary" @click="submitPoints">确 定</el-button></div></el-dialog>
</template><script>
import { deepClone } from "@/utils/deepClone";export default {name: "bdMapDrawLinesDialog",components: {},props: {},dicts: [],data() {return {dialogVisible: false,title: "",bdMap: null,mapCenter: {lng: 120.73957130336815, // 经度lat: 30.748406263284365,}, // 地图中心点mapZoom: 14, // 地图缩放级别startPoint: {lng: 120.72532015906316,lat: 30.747761317225542,},endPoint: {lng: 120.73105566952,lat: 30.74805738479023,},drivingTime: 0, // 驾驶时间 分钟drivingDistance: 0, // 行驶距离 公里pointsArr: [// {//   lat: 30.748406263284365,//   lng: 120.73957130336815// },// {//   lat: 30.748406263284365,//   lng: 120.73957130336815// },// {//   lat: 30.748406263284365,//   lng: 120.73957130336815// }], // 最终保存的点位信息 （路段中的所有点位[包含：起点，终点]）mapClickListener: null, // 地图点击事件监听器searchText: undefined, // 查询的关键字searchPoint: {}, // 查找到的点位searchRes: [], // 查到结果};},methods: {showDialog(data) {this.dialogVisible = true;this.title = data.title;if (data.data) {// 回显线段和起点终点let pointsArr = JSON.parse(data.data);this.pointsArr = pointsArr;this.startPoint = pointsArr[0];this.endPoint = pointsArr[pointsArr.length - 1];} else {}this.initBdMap(data.data);},hideDialog() {// this.mapCenter = {//   lng: 120.73957130336815,//   lat: 30.748406263284365// }this.bdMap.destroy();this.bdMap = null;removeEventListener("click", this.mapClickListener);this.mapClickListener = null;this.dialogVisible = false;this.removeSearch();},removeSearch() {// if (this.searchPoint) {//   this.removeMarker("searchPoint")// }this.searchPoint = {};this.searchText = undefined;this.searchRes = [];},submitPoints() {if (this.pointsArr.length < 2) this.$message.warning("请先绘制线路");this.$emit("on-response", {pointsArr: this.pointsArr,km: this.drivingDistance,});this.hideDialog();},initBdMap(flag) {this.$nextTick(() => {this.bdMap = new BMapGL.Map("map-container");this.bdMap.centerAndZoom(new BMapGL.Point(this.mapCenter.lng, this.mapCenter.lat),this.mapZoom,);this.bdMap.enableScrollWheelZoom(true);if (!flag) {// 新增则绘制起点和终点this.drawMarker();} else {// 编辑或者详情则回显绘制的路线this.drawRouteLine();}setTimeout(() => {this.setViewport([this.startPoint, this.endPoint]);}, 500);});},/*** @Event 绘制路线* @description:* @author: mhf* @time: 2024-02-01 11:41:40**/drawRouteLine() {let drivingTime = 0;let drivingDistance = 0;let pointsArr = [];let that = this;var searchComplete = function (results) {if (transit.getStatus() == BMAP_STATUS_SUCCESS) {var plan = results.getPlan(0);drivingTime = plan.getDuration(true); //获取时间drivingDistance = plan.getDistance(true); //获取距离pointsArr = that.makePointsArr(plan._lines); // 路段中所有的点位数组that.removeMarker();}};var transit = new BMapGL.DrivingRouteLine(this.bdMap, {renderOptions: {map: this.bdMap,enableDragging: true,autoViewport: true,lineLayerStyle: {// strokeTextureUrl: null,showTraffic: true}},onSearchComplete: searchComplete,onPolylinesSet: () => {this.drivingTime = drivingTime;this.drivingDistance = this.convertDistance(drivingDistance);this.pointsArr = deepClone(pointsArr);},});let start = new BMapGL.Point(this.startPoint.lng, this.startPoint.lat);let end = new BMapGL.Point(this.endPoint.lng, this.endPoint.lat);transit.search(start, end);},/*** @Event 调整地图到最佳视野* @param: portArr 点位数组 [pot1, pot2, pot3]* @description:* @author: mhf* @time: 2024-02-01 10:12:24**/setViewport(portArr) {this.bdMap.setViewport(portArr);},/*** @Event 将路径单位统一成千米* @description: 15.9公里 -> 15.9; 500米 -> 0.5* @author: mhf* @time: 2024-02-01 10:43:07**/convertDistance(distance) {let resKm = 0;if (distance.indexOf("公里") > -1) {resKm = distance.substring(0, distance.indexOf("公里"));} else if (distance.indexOf("米") > -1) {resKm = distance.substring(0, distance.indexOf("米")) / 1000;} else {resKm = distance;}return resKm;},/*** @Event 绘制点位* @param: obj 点位对象,* @param: myIcon 自定义图标,*  @param: customObj 自定义参数,* @description: this.makePoint({lng: 116.404, lat: 39.119})* @author: mhf* @time: 2024-02-01 13:43:13**/makePoint(obj, myIcon, customObj) {let point = new BMapGL.Point(obj.lng, obj.lat); // 创建点let marker = new BMapGL.Marker(point, {icon: myIcon ? myIcon : null,}); // 创建标注marker.customObj = customObj;this.bdMap.addOverlay(marker);marker.addEventListener("click", (e) => {});},/*** @Event 将指定数组嵌套的数据转成扁平化的点位数据* @description:* @author: mhf* @time: 2024-02-01 13:57:20**/makePointsArr(arr) {return arr.flatMap((item) => item.points);},/*** @Event: 点击地图绘制点位* @description:* @author: mhf* @time: 2024-02-01 17:24:04**/drawMarker() {let num = 0;this.mapClickListener = this.bdMap.addEventListener("click", (e) => {num++;let obj = {lng: e.latlng.lng,lat: e.latlng.lat,};if (num === 1) {this.startPoint = obj;var myIcon = new BMapGL.Icon("/img/startPoint.png",new BMapGL.Size(25, 40),);this.makePoint(obj, myIcon, { name: "startPoint" });} else if (num === 2) {this.endPoint = obj;this.drawRouteLine();}});},/*** @Event 移除点位* @description:* @author: mhf* @time: 2024-02-01 19:36:52**/removeMarker(name = "startPoint") {let makerArr = this.bdMap.getOverlays();for (let i = 0; i < makerArr.length; i++) {if (makerArr[i].customObj?.name === name) {this.bdMap.removeOverlay(makerArr[i]); // 移除指定点位}}// this.bdMap.clearOverlays() // 移除所有点位},/*** @Event 输入关键字查询地点* @description:* @author: mhf* @time: 2024-02-21 15:56:42**/searchPlace(e) {this.searchRes = [];if (e) {const myFun = () => {this.searchRes = local.getResults()._pois;};var local = new BMapGL.LocalSearch(this.bdMap, {onSearchComplete: myFun,});local.search(e);} else {this.removeMarker("searchPoint");}},chooseIt(item) {this.searchPoint = item.point;if (this.searchPoint) {this.removeMarker("searchPoint");}this.makePoint({ lng: this.searchPoint.lng, lat: this.searchPoint.lat },null,{ name: "searchPoint" },false,);this.bdMap.centerAndZoom(item.point, 18);},},created() {},mounted() {},
};
</script><style lang="scss" scoped>
::v-deep .el-dialog__body {padding: 20px 0 0 !important;
}.dialog-body {padding: 0 20px 20px;min-height: 60vh;max-height: 65vh;overflow-y: auto;position: relative;#map-container {min-height: 60vh;width: 100%;::v-deep .anchorBL img {display: none;}::v-deep .BMap_cpyCtrl span {display: none !important;}}&-search {width: 300px;position: absolute;top: 20px;left: 40px;z-index: 999 !important;}&-res {width: 300px;max-height: 400px;position: absolute;top: 50px;left: 40px;z-index: 999 !important;padding: 10px;background: #fff;border: 1px solid #eee;box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);overflow-y: auto;span {display: block;width: 278px;white-space: nowrap;overflow: hidden;text-overflow: ellipsis;line-height: 30px;&:hover {cursor: pointer;border: 1px solid #409eff;}}}&-none {width: 300px;position: absolute;top: 54px;left: 40px;z-index: 999 !important;padding: 10px;background: #fff;line-height: 40px;border: 1px solid #eee;box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);}
}.dialog-footer {text-align: center;padding: 10px 0 18px;
}
</style>

图标：

示例数据(点击保存之后的数据)

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