百度地图利用DrivingRoute做轨迹回放

 




body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}

// 百度地图API功能       var map = new BMap.Map("allmap");  // 创建Map实例 map.centerAndZoom("哈尔滨",15);      // 初始化地图,用城市名设置地图中心点 map.setMapStyle({ //可以自己定义地图底图 http://developer.baidu.com/map/custom/ styleJson:[           {                     "featureType": "water",                     "elementType": "all",                     "stylers": {                               "color": "#72b8fe"                     }           },           {                     "featureType": "road",                     "elementType": "geometry.fill",                     "stylers": {                               "color": "#ffffff"                     }           },           {                     "featureType": "road",                     "elementType": "geometry.stroke",                     "stylers": {                               "color": "#bababa"                     }           },           {                     "featureType": "road",                     "elementType": "labels.text.fill",                     "stylers": {                               "color": "#767676"                     }           },           {                     "featureType": "road",                     "elementType": "labels.text.stroke",                     "stylers": {                               "color": "#ffffff"                     }           },           {                     "featureType": "land",                     "elementType": "all",                     "stylers": {                               "color": "#b8cb93"                     }           } ]     });     map.addControl(new BMap.NavigationControl());             map.addControl(new BMap.ScaleControl({anchor: BMAP_ANCHOR_TOP_LEFT}));     map.enableScrollWheelZoom(true); var pts = [     new BMap.Point(126.618398,45.721217),     new BMap.Point(126.62081,45.713008),     new BMap.Point(126.654694,45.732086),     new BMap.Point(126.675481,45.738471)  ];    var polyline ;    var options = { onSearchComplete: function(results){ if (driving.getStatus() == BMAP_STATUS_SUCCESS){ // 获取第一条方案 var plan = results.getPlan(0); // 获取方案的驾车线路 var route = plan.getRoute(0); //返回路线的地理坐标点数组。（自 1.2 新增） var points = route.getPath(); polyline = new BMap.Polyline(points); //alert(points.length); map.addOverlay(polyline);          //增加折线 } } //, //renderOptions:{map: map, autoViewport: true} };    var driving = new BMap.DrivingRoute(map, options);             i=0; function playLine(i){ if(i==0){//第一个点 直接添加 var marker = new BMap.Marker(pts[i]);  // 创建标注 map.addOverlay(marker);  marker.setLabel(new BMap.Label("我是第"+(i+1)+"个点",{offset:new BMap.Size(20,-10)})); map.panTo(pts[i]); i++; setTimeout(function(){ playLine(i); },2000) }else{//获取PolyLine并添加 添加点 if(i<=pts.length){ driving.search(pts[i-1], pts[i]);  map.addOverlay(polyline); var marker = new BMap.Marker(pts[i]);  // 创建标注     map.addOverlay(marker); marker.setLabel(new BMap.Label("我是第"+(i+1)+"个点",{offset:new BMap.Size(20,-10)})); map.panTo(pts[i]); i++; setTimeout(function(){ playLine(i); },2000) } } }     playLine(i);

需求：手机上报的GPS坐标，需要在网页上做动态路径回放
问题：直接用上报的GPS坐标构造PolyLine，与实际路径差别太大。
解决办法：利用DrivingRoute获取到两个坐标点直接的优化路径。
补充说明：此DEMO没有做大数据量的测试。仅提供思路以供参考。