百度GL地圖實現某一段路的路況（new BMapGL.DrivingRouteLine）

功能描述：

1.百度地圖實現點擊地圖出現起點，再次點擊出現終點（起點終點能拖動）繪制完終點后獲取該路的路況并且起點和終點可以拖動實現實時更新（新繪制的路段的）路況

2.地點搜索

效果如下：?

?關鍵代碼：

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);},});

完整代碼：

<!--* @Description: 百度地圖自動獲取路段點位 頁面* @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="輸入關鍵字查詢"></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> 沒有搜索結果... </em></div></div></div><lineH /><div class="dialog-footer"><el-button @click="hideDialog">取 消</el-button><el-button type="primary" @click="submitPoints">確 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, // 經度lat: 30.748406263284365,}, // 地圖中心點mapZoom: 14, // 地圖縮放級別startPoint: {lng: 120.72532015906316,lat: 30.747761317225542,},endPoint: {lng: 120.73105566952,lat: 30.74805738479023,},drivingTime: 0, // 駕駛時間 分鐘drivingDistance: 0, // 行駛距離 公里pointsArr: [// {//   lat: 30.748406263284365,//   lng: 120.73957130336815// },// {//   lat: 30.748406263284365,//   lng: 120.73957130336815// },// {//   lat: 30.748406263284365,//   lng: 120.73957130336815// }], // 最終保存的點位信息 （路段中的所有點位[包含：起點，終點]）mapClickListener: null, // 地圖點擊事件監聽器searchText: undefined, // 查詢的關鍵字searchPoint: {}, // 查找到的點位searchRes: [], // 查到結果};},methods: {showDialog(data) {this.dialogVisible = true;this.title = data.title;if (data.data) {// 回顯線段和起點終點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.$message.warning("請先繪制線路");this.$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) {// 新增則繪制起點和終點this.drawMarker();} else {// 編輯或者詳情則回顯繪制的路線this.drawRouteLine();}setTimeout(() => {this.setViewport([this.startPoint, this.endPoint]);}, 500);});},/*** @Event 繪制路線* @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); //獲取時間drivingDistance = plan.getDistance(true); //獲取距離pointsArr = that.makePointsArr(plan._lines); // 路段中所有的點位數組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 調整地圖到最佳視野* @param: portArr 點位數組 [pot1, pot2, pot3]* @description:* @author: mhf* @time: 2024-02-01 10:12:24**/setViewport(portArr) {this.bdMap.setViewport(portArr);},/*** @Event 將路徑單位統一成千米* @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 繪制點位* @param: obj 點位對象,* @param: myIcon 自定義圖標,*  @param: customObj 自定義參數,* @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); // 創建點let marker = new BMapGL.Marker(point, {icon: myIcon ? myIcon : null,}); // 創建標注marker.customObj = customObj;this.bdMap.addOverlay(marker);marker.addEventListener("click", (e) => {});},/*** @Event 將指定數組嵌套的數據轉成扁平化的點位數據* @description:* @author: mhf* @time: 2024-02-01 13:57:20**/makePointsArr(arr) {return arr.flatMap((item) => item.points);},/*** @Event: 點擊地圖繪制點位* @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 移除點位* @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]); // 移除指定點位}}// this.bdMap.clearOverlays() // 移除所有點位},/*** @Event 輸入關鍵字查詢地點* @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>

圖標：

示例數據(點擊保存之后的數據)

[{"lng":112.318041,"lat":32.43625},{"lng":112.321216,"lat":32.43549},{"lng":112.322844,"lat":32.435137},{"lng":112.322844,"lat":32.435137},{"lng":112.322534,"lat":32.434416},{"lng":112.322334,"lat":32.433945},{"lng":112.322184,"lat":32.433594},{"lng":112.321984,"lat":32.433123},{"lng":112.321864,"lat":32.432823},{"lng":112.321695,"lat":32.432432},{"lng":112.321675,"lat":32.432402},{"lng":112.321395,"lat":32.431731},{"lng":112.321145,"lat":32.431129},{"lng":112.321025,"lat":32.430889},{"lng":112.321025,"lat":32.430889},{"lng":112.321055,"lat":32.430629},{"lng":112.321045,"lat":32.430529},{"lng":112.320725,"lat":32.428517},{"lng":112.320495,"lat":32.427496},{"lng":112.320114,"lat":32.425573},{"lng":112.319914,"lat":32.424242},{"lng":112.319914,"lat":32.424242},{"lng":112.319743,"lat":32.422991},{"lng":112.319713,"lat":32.422771},{"lng":112.319543,"lat":32.421839},{"lng":112.319503,"lat":32.421279},{"lng":112.319503,"lat":32.421279},{"lng":112.319652,"lat":32.42127},{"lng":112.319682,"lat":32.42127},{"lng":112.321639,"lat":32.42116},{"lng":112.323108,"lat":32.421076},{"lng":112.323467,"lat":32.421057},{"lng":112.324716,"lat":32.420989},{"lng":112.325616,"lat":32.420941},{"lng":112.325866,"lat":32.420921},{"lng":112.326286,"lat":32.420891},{"lng":112.327006,"lat":32.420841},{"lng":112.327606,"lat":32.42079},{"lng":112.329307,"lat":32.420657},{"lng":112.333542,"lat":32.420308},{"lng":112.33704,"lat":32.42002},{"lng":112.337712,"lat":32.419964},{"lng":112.342698,"lat":32.419576},{"lng":112.347669,"lat":32.419163},{"lng":112.348653,"lat":32.419088},{"lng":112.351527,"lat":32.41884},{"lng":112.355014,"lat":32.41855},{"lng":112.356984,"lat":32.418395},{"lng":112.361145,"lat":32.418023},{"lng":112.365686,"lat":32.417648},{"lng":112.365937,"lat":32.417624},{"lng":112.368237,"lat":32.41742},{"lng":112.370245,"lat":32.417242},{"lng":112.372091,"lat":32.417068},{"lng":112.372292,"lat":32.417056},{"lng":112.375782,"lat":32.416648},{"lng":112.376264,"lat":32.416594},{"lng":112.377186,"lat":32.416486},{"lng":112.377186,"lat":32.416486},{"lng":112.377146,"lat":32.416176},{"lng":112.377095,"lat":32.415837},{"lng":112.376964,"lat":32.414867},{"lng":112.376964,"lat":32.414677},{"lng":112.377054,"lat":32.414186},{"lng":112.377184,"lat":32.413855},{"lng":112.377274,"lat":32.413704},{"lng":112.377424,"lat":32.413473},{"lng":112.377704,"lat":32.413171},{"lng":112.377975,"lat":32.412949},{"lng":112.378375,"lat":32.412716},{"lng":112.378485,"lat":32.412605},{"lng":112.378616,"lat":32.412564},{"lng":112.379337,"lat":32.412329},{"lng":112.380539,"lat":32.411971},{"lng":112.380829,"lat":32.41193},{"lng":112.381119,"lat":32.411848},{"lng":112.3816,"lat":32.411706},{"lng":112.38198,"lat":32.411594},{"lng":112.38198,"lat":32.411594},{"lng":112.382671,"lat":32.411392},{"lng":112.385042,"lat":32.410685},{"lng":112.385802,"lat":32.410505},{"lng":112.386362,"lat":32.410414},{"lng":112.388041,"lat":32.410235},{"lng":112.393126,"lat":32.409744},{"lng":112.393126,"lat":32.409744},{"lng":112.395311,"lat":32.409538},{"lng":112.398492,"lat":32.409237},{"lng":112.398632,"lat":32.409229},{"lng":112.401771,"lat":32.408945},{"lng":112.403674,"lat":32.40877},{"lng":112.404162,"lat":32.408737},{"lng":112.405217,"lat":32.408642},{"lng":112.405715,"lat":32.40859},{"lng":112.406631,"lat":32.408513},{"lng":112.410264,"lat":32.408192},{"lng":112.41108,"lat":32.408036},{"lng":112.411587,"lat":32.407894},{"lng":112.412223,"lat":32.407645},{"lng":112.412631,"lat":32.407442},{"lng":112.413029,"lat":32.407219},{"lng":112.413625,"lat":32.406789},{"lng":112.417751,"lat":32.403011},{"lng":112.41954,"lat":32.401372},{"lng":112.423258,"lat":32.397945},{"lng":112.424034,"lat":32.397258},{"lng":112.42476,"lat":32.39677},{"lng":112.425496,"lat":32.396401},{"lng":112.427029,"lat":32.395895},{"lng":112.427567,"lat":32.395733},{"lng":112.428542,"lat":32.395427},{"lng":112.428901,"lat":32.395322},{"lng":112.429498,"lat":32.39514},{"lng":112.430145,"lat":32.394939},{"lng":112.430345,"lat":32.394872},{"lng":112.432596,"lat":32.394179},{"lng":112.434968,"lat":32.393445},{"lng":112.439626,"lat":32.391953},{"lng":112.439706,"lat":32.391933},{"lng":112.440205,"lat":32.391766},{"lng":112.441383,"lat":32.391392},{"lng":112.442541,"lat":32.391017},{"lng":112.44343,"lat":32.390739},{"lng":112.44343,"lat":32.390739},{"lng":112.44369,"lat":32.39111},{"lng":112.44382,"lat":32.3913},{"lng":112.44432,"lat":32.392032},{"lng":112.44447,"lat":32.392242},{"lng":112.444931,"lat":32.392913},{"lng":112.445721,"lat":32.394044},{"lng":112.446362,"lat":32.394954},{"lng":112.446662,"lat":32.395384},{"lng":112.447333,"lat":32.396344},{"lng":112.450169,"lat":32.400389},{"lng":112.451843,"lat":32.402783},{"lng":112.452676,"lat":32.403949},{"lng":112.452786,"lat":32.404118},{"lng":112.452786,"lat":32.404118},{"lng":112.452946,"lat":32.404347},{"lng":112.452946,"lat":32.404347},{"lng":112.453619,"lat":32.405183},{"lng":112.45423,"lat":32.405819},{"lng":112.454882,"lat":32.406415},{"lng":112.455554,"lat":32.40694},{"lng":112.455795,"lat":32.407128},{"lng":112.45735,"lat":32.408364},{"lng":112.459147,"lat":32.409776},{"lng":112.460965,"lat":32.411216},{"lng":112.463807,"lat":32.413459},{"lng":112.465757,"lat":32.414982},{"lng":112.465837,"lat":32.415041},{"lng":112.466581,"lat":32.415619},{"lng":112.468883,"lat":32.417414},{"lng":112.470884,"lat":32.418981},{"lng":112.471175,"lat":32.419206},{"lng":112.47204,"lat":32.419872},{"lng":112.47371,"lat":32.421283},{"lng":112.475128,"lat":32.422699},{"lng":112.475188,"lat":32.422768},{"lng":112.47559,"lat":32.423221},{"lng":112.476405,"lat":32.424196},{"lng":112.477411,"lat":32.425419},{"lng":112.479573,"lat":32.428022},{"lng":112.480287,"lat":32.428879},{"lng":112.481413,"lat":32.43026},{"lng":112.483684,"lat":32.433102},{"lng":112.484127,"lat":32.433635},{"lng":112.486678,"lat":32.436775},{"lng":112.488646,"lat":32.439206},{"lng":112.490654,"lat":32.441659},{"lng":112.491617,"lat":32.442796},{"lng":112.492078,"lat":32.44343},{"lng":112.492439,"lat":32.444146},{"lng":112.49295,"lat":32.44525},{"lng":112.493221,"lat":32.445177},{"lng":112.494034,"lat":32.444928},{"lng":112.494175,"lat":32.444886},{"lng":112.496552,"lat":32.444163},{"lng":112.505896,"lat":32.441478},{"lng":112.506616,"lat":32.441268},{"lng":112.507536,"lat":32.441008},{"lng":112.515655,"lat":32.439135},{"lng":112.520611,"lat":32.438025},{"lng":112.524467,"lat":32.437186},{"lng":112.524835,"lat":32.437111},{"lng":112.52602,"lat":32.436848},{"lng":112.526518,"lat":32.436746},{"lng":112.527424,"lat":32.43683},{"lng":112.529076,"lat":32.436977},{"lng":112.529256,"lat":32.43564},{"lng":112.529246,"lat":32.435289},{"lng":112.529226,"lat":32.435109},{"lng":112.529962,"lat":32.434991},{"lng":112.530957,"lat":32.434898},{"lng":112.530838,"lat":32.434166},{"lng":112.530718,"lat":32.431144}]

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