openlayers根据坐标在地图上划区域

 var styles = { 'Polygon': [new ol.style.Style({ stroke: new ol.style.Stroke({ color: '#ff3100', lineDash: [0], width: 1 }), fill: new ol.style.Fill({ color: 'rgba(0, 0, 255, 0.1)' }) })], }; var styleFunction = function(feature) { console.log(feature) return styles[feature.getGeometry().getType()]; }; var geojsonObject = { 'type': 'FeatureCollection', 'crs': { 'type': 'name', 'properties': { 'name': 'EPSG:3857' } }, 'features': [ { //区域 'type': 'Feature', 'geometry': { 'type': 'Polygon', 'coordinates': [ [ ......... ] ] } }, ] }; var vectorSource = new ol.source.Vector({ features: (new ol.format.GeoJSON()).readFeatures(geojsonObject) }); var vectorLayer = new ol.layer.Vector({ source: vectorSource, style: styleFunction, });

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