Openlayers zIndex用于标记和向量 [英] Openlayers zIndex for markers and vectors

问题描述

我正在使用OSM渲染地图，并且在为页面元素设置zIndex时遇到了一些严重的问题.

I'm rendering map with OSM and I have some serious problem with setting zIndex for page elements.

JS的一部分如下所示:

Part of JS looks like this:

var userRoute = new OpenLayers.Layer.Vector( "KML", {
    sphericalMercator : true,
    styleMap: styleMap,
    rendererOptions: { zIndexing: true }
} );

var markers = new OpenLayers.Layer.Markers( "Markers", {
    sphericalMercator : true,
    rendererOptions: { zIndexing: true }
} );

markers.setZIndex( 500 );
userRoute.setZIndex( 200 );

现在在解析我设置的第一个元素的KML文件时

Now while parsing KML file for first element I set

var startFlag = new OpenLayers.Icon( '/start_flag_2.png', new OpenLayers.Size( 23, 22 ) );
markers.addMarker( new OpenLayers.Marker( latlon, startFlag ) )

最后一个元素一样. :

Same goes for last elem. :

var stopFlag = new OpenLayers.Icon( '/stop_flag_2.png', new OpenLayers.Size( 23, 22 ) );
markers.addMarker( new OpenLayers.Marker( latlon, stopFlag ) )

脚本完全忽略了设置zIndex的原因，知道为什么吗?

Setting zIndex is simply ignored by script, any idea why?

推荐答案

如果有人感兴趣，则需要在添加图层到地图后指定zIndex

If anyone is intrested, you need to specify zIndex AFTER adding layers to map

map.addLayers( [userRoute, markers] ); 
markers.setZIndex( 1001 ); 
userRoute.setZIndex( 1000 ); 

它可以正常工作:)

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