Google maps api 3 google.maps.DirectionsRenderer：如何在一张地图中渲染所有停止点

嗨，我有一张显示航天飞机方向的地图，下面是地图和方向初始化代码

var centerLatlng = new google.maps.LatLng(-34.942799,138.553365);
  var myOptions = {
  zoom: 13,
  center: centerLatlng,

    mapTypeId: google.maps.MapTypeId.ROADMAP,
  zoomControl: true,
  zoomControlOptions: {
    style: google.maps.ZoomControlStyle.LARGE
  },
  panControl:true,
  streetViewControl: false,
    OverviewMapControlOptions:
    {
      opened: true
    }
  };
  var map = new google.maps.Map(document.getElementById("map-guide-google-map"),  myOptions);

以下是显示方向

function DisplayDirection(directionList){
    var directionsService = new google.maps.DirectionsService();

    var directionsDisplay = new google.maps.DirectionsRenderer({
      markerOptions: {
        visible:false
      }
    });

    directionsDisplay.setMap(map);

    //Request 0
    var increaseSize = 7;
    var index =0;
    var theoryCurrentEndIndex = index + increaseSize;
    var maxmimumIndex = directionList.length-1;
    var origin = directionList[index];
    var destination = theoryCurrentEndIndex < maxmimumIndex?directionList[theoryCurrentEndIndex]:directionList[maxmimumIndex];
    var actualCurrentEndIndex = theoryCurrentEndIndex < maxmimumIndex?theoryCurrentEndIndex: maxmimumIndex;
    var waypoints = new Array();
    if(actualCurrentEndIndex-index>1) {
      for(var i=index+1;i<actualCurrentEndIndex;i++) {
        waypoints.push(

            {
              location:directionList[i],
              stopover:true}

        );
      }
    }

    var request = {
      origin: origin,
      destination: destination,
      waypoints : waypoints,
      provideRouteAlternatives:false,
      travelMode: google.maps.TravelMode.WALKING,
      unitSystem: google.maps.UnitSystem.METRIC
    }

    directionsService.route(request, function(result, status) {
      if(status == google.maps.DirectionsStatus.OK) {
        directionsDisplay.setDirections(result);
      }
    }) ;
}

函数显示方向（方向列表）{
var directionsService=new google.maps.directionsService（）；
var directionsDisplay=新建google.maps.DirectionsRenderer({
标记选项：{
可见：假
}
});
方向显示.setMap（地图）；
//请求0
var increaseSize=7；
var指数=0；
var Theory CurrentedIndex=指数+增量大小；
var maxmimumIndex=directionList.length-1；
变量来源=方向列表[索引]；
var destination=TheoryCurrentIndex1）{
对于（var i=index+1；iI）在您的代码中没有看到任何LatLongBounds对象。您想“重置”什么？我没有使用LatLongBounds，因为它似乎不起作用。我所要做的就是让所有的停止点出现在一个地图屏幕中