『实践』百度地图同时显示多个路书

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function showallrecord(starttime,endtime){//显示多条开始结束时间之间的自行车路书
    var bikeId=null;
    $.getJSON("./GetBickIdServlet",function(json){
        bikeId = json;//所有自行车编号
    });
    var json={
            "StartTime":starttime,//开始时间
            "EndTime":endtime//结束时间
    };
    //创建二维数组，例如pointArray[i]中i自行车编号，pointArray[i][j]为编号为i的自行车的所有借还站点信息
    $.getJSON("./GetAllRecordServlet",{json:JSON.stringify(json)},function(json){
        var j = 0;
        var stationlonlist=new Array();
        var stationlatlist=new Array();
        var pointArray=new Array();
        var bikeIdlist = new Array();
        for(var i = 0; i < bikeId.length; i++){
            stationlonlist[i] = new Array();
            stationlatlist[i] = new Array();
            pointArray[i] = new Array();
            bikeIdlist[i] = bikeId[i].BikeId;
        }
        var tt = json.length < 200?json.length:200;//如果查询出来的自行车借还站点记录多于200条，则显示200条。（待完善）
        for (var row = 0; row < pointArray.length; row++) {
            while (j < tt) {
                var k = j;
                var p = 0;
                var stationlon = parseFloat(json[j].Stationlon);// String类型转换成float类型
                stationlonlist[row][p]=stationlon;// 将stationlon放到stationlonlist里
                var stationlat = parseFloat(json[j].Stationlat);
                stationlatlist[row][p]=stationlat;// 将stationlat放到stationlatlist里
                pointArray[row][p] = new BMap.Point(stationlon,stationlat);
                while (bikeIdlist[row] == json[k + 1].BikeId) {
                    k++;
                    p++;
                    stationlon= parseFloat(json[k].Stationlon);// String类型转换成float类型
                    stationlonlist[row][p]=stationlon;// 将stationlon放到stationlonlist里
                    stationlat= parseFloat(json[k].Stationlat);
                    stationlatlist[row][p] =stationlat;// 将stationlat放到stationlatlist里
                    pointArray[row][p] = new BMap.Point(stationlon, stationlat);
                }
                addMarkertest(pointArray,row);//添加标记点
                j = k + 1;
                break;
            }
            var bikespeedtest = speedtest(pointArray,row);//每辆自行车路书的速度
            polylinetest(pointArray,row,stationlonlist,stationlatlist);//每辆自行车借还站点间画折线
            lushutest(pointArray,bikespeedtest,row,stationlonlist,stationlatlist);//每辆自行车借还站点的路书路径
        }
        map.setViewport(pointArray);
    });
}

function speedtest(pointArray,row){//根据自行车的借还时间差来显示不同的路书速度（待完善）
    var distance = 0;//直行车走过的路径长度
    for(var i = 0; i < pointArray[row].length-1; i++){
        distance += (map.getDistance(pointArray[row][i],pointArray[row][i+1]));//自行车借还站点的路径长度
    }
    return distance/20;//速度=路径长度/时间（此处时间固定，可改为根据数据库读取的时间）
}

//
function polylinetest(pointArray,row,stationlonlist,stationlatlist){
    var points = new Array();
    for(var i = 0; i < pointArray[row].length; i++){
        points[i] = new BMap.Point(parseFloat(stationlonlist[row][i]), parseFloat(stationlatlist[row][i]));
    }
    //增加点与点之间的连线
    var polyline = new BMap.Polyline(points, {
        strokeColor : getColor(),
        strokeWeight : 2,
        strokeOpacity : 0.5
    }); // 创建折线
    map.addOverlay(polyline); // 绘制折线
}

//
function lushutest(pointArray,bikespeedtest,row,stationlonlist,stationlatlist){
    var points = new Array();
    for(var i = 0; i < pointArray[row].length; i++){
        points[i] = new BMap.Point(parseFloat(stationlonlist[row][i]), parseFloat(stationlatlist[row][i]));
    }
    var lushu = new BMapLib.LuShu(map, points, {
        defaultContent : "",
        autoView : true, // 是否开启自动视野调整，如果开启那么路书在运动过程中会根据视野自动调整
        icon : new BMap.Icon('photo/bike.png', new BMap.Size(22, 22), {
            anchor : new BMap.Size(10, 25)
        }),
        // enableRotation: true, //是否设置marker随着道路的走向进行旋转
        speed : bikespeedtest,
    });    
    lushu.start();
}

//生成折线的随机颜色
function sj16(){
    var sjshu=Math.round(Math.random()*10*2);
    do
    {
       sjshu=Math.round(Math.random()*10*2);
    }while (sjshu>=14);
    return sjshu;
}
function getColor(){
    var hex = ['1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'];
    var yanse="";
    for(i=0; i<6; i++){
        yanse+=hex[sj16()];
    }
    return "#"+yanse
}

效果图：