<!DOCTYPE html>
<html>
<head>
<title>WKT</title>
<link rel="stylesheet" href="https://openlayers.org/en/v5.3.0/css/ol.css" type="text/css">
<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
<script type="text/javascript" src="https://openlayers.org/en/v5.3.0/build/ol.js"></script>
</head>
<body>
<div id="map" class="map"></div>
<script>
// 底图
var raster = new ol.layer.Tile({
source: new ol.source.OSM()
});
var wkt = 'POLYGON((10.689 -25.092, 34.595 ' +
'-20.170, 38.814 -35.639, 13.502 ' +
'-39.155, 10.689 -25.092))';
var format = new ol.format.WKT();
// wkt转feature
var feature = format.readFeature(wkt, {
dataProjection: 'EPSG:4326', // 目标坐标系
featureProjection: 'EPSG:3857'// 当前坐标系
});
// wkt转feature构建矢量图
var vector = new ol.layer.Vector({
source: new ol.source.Vector({
features: [feature]
})
});
// 将两个图层加到地图对象
var map = new ol.Map({
layers: [raster, vector],
target: 'map',
view: new ol.View({
center: [2952104.0199, -3277504.823],
zoom: 4
})
});
</script>
</body>
</html>