MarkerClusterer是群集中的标记？

Question

我将标记放入群集中:

var markerClusterer = new MarkerClusterer(map, markers, {
    zoomOnClick : false,
    maxZoom : 13,
    gridSize : 100
});

我有15个标记.其中10个在地图中成簇.如何确定标记是否在群集中.

var clusteredMarkers = markerClusterer.getTotalMarkers();
for(i = 0; i < clusteredMarkers.length; i++) {
    if(isInCluster((clusteredMarkers[i])) {
        clusteredMarkers[i].infobox.close();        
    }
}

如何定义像isInCluster(marker)这样的函数,信息框只​​在标记中打开,不在任何集群中(即5个信息框必须可见)？

Answer 1

该MarkerClusterer会设置一个标记的地图,null如果是在一个集群中,使得它在地图上不再显示.该MarkerClusterer遗嘱然后设置标记的地图回map任何时候只需在群集不再.您可以尝试检查每个标记:

var mapOptions = {            // Notice that mapZoom is not set
    center: new google.maps.LatLng( 19, 19 ),
    mapTypeId: google.maps.MapTypeId.ROADMAP };

map = new google.maps.Map( document.getElementById( "map_canvas" ), mapOptions );
var markerClusterer = new MarkerClusterer( map, markers, { ... });

//Whenever the map completes panning or zooming, the function will be called:
google.maps.event.addListener( map, "idle", function() {
    for ( var i = 0; i < markers.length; i++ ) {
        var mrkr = markers[i];
        if ( mrkr.getMap() != null ) {
            mrkr.infobox.open(); 
        }
        else {
            mrkr.infobox.close(); 
        }
    }
}

//Now that map, markerClusterer, and the "idle" event callback are in place,
//set the zoom, which will trigger the "idle" event callback 
//after the zoom activity completes,
map.setZoom( 19 ); //Or whatever is appropriate

//Thereafter, the callback will run after any pan or zoom...

显然,在放大,缩小或任何其他视口更改后,标记的状态可能会发生变化,因此您必须在视口更改后重新检查.