(编辑:jimmy 日期: 2024/12/23 浏览:2)
vue项目中openlayers画行政区划(区域范围),供大家参考,具体内容如下
原理
在地图上画需要的范围,实际上就是在地图上打上一圈点,然后依次将这些点用线连接,就形成了范围
引用相应的ol模块
import VectorLayer from 'ol/layer/Vector' import VectorSource from 'ol/source/Vector' import { Map, View, Feature } from 'ol' import { Style, Icon, Stroke } from 'ol/style' import { Point, LineString, Polygon } from 'ol/geom'
获取范围点
这里我将点放在json文件中,然后通过axios读取
json文件截图:
axios.get('static/常德市.json').then((res) => { let arr = res.data.coordinates let polygonFeature = new Feature({ type: 'polygon', geometry: new Polygon(arr[0]) }) polygonFeature.setStyle(new Style({ stroke: new Stroke({ width: 2, color: [255, 255, 0, 0.8] }), fill: new Fill({ color: [248, 172, 166, 0.2] }) // text: new Text({ // text: '这是区域' // }) })) let polygonLayer = new VectorLayer({ source: new VectorSource({ features: [polygonFeature] }) }) this.gmap.addLayer(polygonLayer) }) axios.get('static/怀化市沅陵县.json').then((res) => { let arr = res.data.coordinates let polygonFeature = new Feature({ type: 'polygon', geometry: new Polygon(arr[0]) }) polygonFeature.setStyle(new Style({ stroke: new Stroke({ width: 2, color: [255, 255, 0, 0.8] }), fill: new Fill({ color: [248, 172, 166, 0.2] }) // text: new Text({ // text: '这是区域' // }) })) let polygonLayer = new VectorLayer({ source: new VectorSource({ features: [polygonFeature] }) }) this.gmap.addLayer(polygonLayer) })
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。