地图按照自己规定路线进行移动

//计算多点之间坐标点
function count(date) {
    var pts = [];
    var datelist = [];
    for (j = 1; j < date.length; j++) {
        var x1 = date[j].lng;
        var y1 = date[j].lat;
        var x2 = date[j - 1].lng;
        var y2 = date[j - 1].lat;
        var pt1 = new BMap.Point(x1, y1);
        var pt2 = new BMap.Point(x2, y2);
        datelist.push(pt1);
        datelist.push(pt2);
        var polyline = new BMap.Polyline(datelist);
        var chang = BMapLib.GeoUtils.getPolylineDistance(polyline);
        for (var i = 0; i < chang; i += 30) {
            var x3 = i / chang * (x1 - x2) + x2;
            var y3 = i / chang * (y1 - y2) + y2;
            var point = new BMap.Point(x3, y3);
            pts.push(point);
        }
    }
    clearCarMk();
    peoPleRun(pts)
    return pts;
}
//运动轨迹
var carMkList = []

//不规划直接运动
function peoPleRun(pts) {
    var myIcon = new BMap.Icon("图片地址", new BMap.Size(32, 70), {    //小车图片
        //offset: new BMap.Size(0, -5),    //相当于CSS精灵
        imageOffset: new BMap.Size(0, 0)    //图片的偏移量。为了是图片底部中心对准坐标点。
    });
    window.run = function () {
        var paths = pts.length;    //获得有几个点
        var carMk = new BMap.Marker(pts[1], {icon: myIcon});
        map.addOverlay(carMk);
        carMkList.push(carMk);
        i = 0;

        function resetMkPoint(i) {
            carMk.setPosition(pts[i]);
            if (i < paths) {
                setTimeout(function () {
                    i++;
                    resetMkPoint(i);
                }, 100);
            }
        }

        setTimeout(function () {
            resetMkPoint(1);
        }, 100)
    }
    //setTimeout(function(){
    run();
    //},1500);

}