<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title data-i18n="resources.title_getFeatureByBounds"></title>
</head>
<body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%;position: absolute;top: 0;">
<div id="map" style="margin:0 auto;width: 100%;height: 100%"></div>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.7.1/leaflet.css" />
<link rel="stylesheet" href="https://iclient.supermap.io/dist/leaflet/iclient-leaflet.min.css" />
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.7.1/leaflet.js"></script>
<script type="text/javascript" src="https://iclient.supermap.io/dist/leaflet/iclient-leaflet.js"></script>
<script type="text/javascript">
var host = window.isLocal ? window.server : "https://iserver.supermap.io";
var map, resultLayer,
baseUrl = host + "/iserver/services/map-world/rest/maps/World",
url = host + "/iserver/services/data-world/rest/data";
map = L.map('map', {
preferCanvas: true,
crs: L.CRS.EPSG4326,
center: {lon: 20, lat: -10},
maxZoom: 18,
zoom: 2
});
new L.supermap.TiledMapLayer(baseUrl).addTo(map);
query();
function query() {
var polygon = L.polygon([[-20, 20], [0, 20], [0, 40], [-20, 40], [-20, 20]], {color: 'red'});
polygon.addTo(map);
var boundsParam = new L.supermap.GetFeaturesByBoundsParameters({
datasetNames: ["World:Capitals"],
bounds: polygon.getBounds()
});
new L.supermap
.FeatureService(url)
.getFeaturesByBounds(boundsParam, function (serviceResult) {
resultLayer = L.geoJSON(serviceResult.result.features, {
onEachFeature: function (feature, layer) {
layer.bindPopup("首都"+"：" + feature.properties.CAPITAL);
}
}).addTo(map);
});
}
</script>
</body>
</html>
得出的结果是一个固定在地图上的矩形框架，那样子每次查询都需要重新定义。如何修改让他成为一个地图按钮，可以通过自定义范围来实现框选呢？
