谷歌地图 API - 保存更改（标记）方向

Question

我正在使用谷歌地图 api v3。当我计算方式时（基于变量中保存的点），然后简单地移动一个标记（改变方式） - 我怎样才能保存这个改变？ 我需要那个，因为当我更改标记位置之后 - 更改旅行模式：新方法是在不更改标记的情况下进行计算...

我厌倦了这个：http://vikku.info/programming/google-maps-v3/draggable-directions/saving-draggable-directions-saving-waypoints-google-directions-google-maps-v3.htm

var new_waypoints = directionsDisplay.directions.routes[0].legs[0];
origin = new_waypoints.start_location;
destination = new_waypoints.end_location;
var wp = new_waypoints.via_waypoints;
var w = [];
alert(wp.length);
for(var i=0; i<wp.length; i++)
{
    w[i] = [wp[i].lat(),wp[i].lng()]
    alert('w');
}
waypoints = w;

但是 new_waypoints.via_waypoints 总是返回空数组...

Answer 1

我找到了解决办法！

var new_waypoints = directionsDisplay.directions.routes[0].legs[0];
        var waypoints_count = directionsDisplay.directions.routes[0].legs.length;
        var w = [];
        origin = new_waypoints.start_location;
        for(var i = 1; i<waypoints_count; ++i)
        {
            w.push({ location: directionsDisplay.directions.routes[0].legs[i].start_location, stopover: true });
        }    

        destination = directionsDisplay.directions.routes[0].legs[waypoints_count-1].end_location;
        waypoints = w;