我在开放层(5.2.0)中有一个简单的2d地图,它来自以下URL:https://services.arcgisonline.com/arcgis/rest/services/NatGeo_World_Map/MapServer。当我切换到ol-铯时,地图不再显示,我只看到一个黑色圆圈(地球)。这是代码:
它与OpenStreetMap可以很好地工作,问题是当我尝试使用来自arcgisonline.com的地图时
<!doctype html>
<html lang="en">
<head>
<style>
.map {
height: 400px;
width: 400px;
}
</style>
<link type="text/css" rel="stylesheet" href="/csiaps/webjars/openlayers/5.2.0/ol.css" />
<link type="text/css" rel="stylesheet" href="/csiaps/js/olcesium/olcs.css" />
<script type="text/javascript" src="/csiaps/webjars/openlayers/5.2.0/ol.js"></script>
<script type="text/javascript" src="/csiaps/js/cesium/Build/CesiumUnminified/Cesium.js"></script>
<script type="text/javascript" src="/csiaps/js/olcesium/olcesium.js"></script>
<script>
var ol3d = null;
var baseLayerGroup;
function createArcGISCacheLayer(name, url, layerInfoParam) {
name = 'NatGeo_World_Map';
url = 'https://services.arcgisonline.com/arcgis/rest/services/NatGeo_World_Map/MapServer';
layerInfoParam = <NEVER MIND, not include for this post>;
var wrapDateLineOption = true;
var layer = new ol.layer.Image({
visible : true,
source : new ol.source.ImageArcGISRest({
url : url,
params : {
"layerInfo" : layerInfoParam,
"wrapDateLine" : wrapDateLineOption
}
})
});
layer.set('title', name);
return layer;
}
</script>
</head>
<body>
<h2>My Map</h2>
<div id="map" class="map"></div>
<script type="text/javascript">
var layer = createArcGISCacheLayer(null, null, null);
var map = new ol.Map({
target : 'map',
layers : [ layer ],
view : new ol.View({
center : ol.proj.fromLonLat([ 37.41, 8.82 ]),
zoom : 4
})
});
function showHideMap() {
if (!ol3d || !ol3d.getEnabled()){
ol3d = new olcs.OLCesium({
map : map,
});
}
ol3d.setEnabled(!ol3d.getEnabled());
}
</script>
<a href="javascript:showHideMap();">3d</a>
</body>
</html>
我希望ol-celium可以在3d中格式化已经加载的2d地图,并显示它们而不是黑色地图
答案 0 :(得分:1)
这是一个瓷砖层
var layer = new ol.layer.Tile({
source: new ol.source.TileArcGISRest({
url: 'https://services.arcgisonline.com/arcgis/rest/services/NatGeo_World_Map/MapServer'
})
});
由于它是EPSG:3857并使用标准网格,因此它也可以设置为XYZ源,并且打开速度更快(请注意,与大多数XYZ源相比,x和y方向相反)
var layer = new ol.layer.Tile({
source: new ol.source.XYZ({
url: 'https://services.arcgisonline.com/arcgis/rest/services/NatGeo_World_Map/MapServer/tile/{z}/{y}/{x}'
})
});