vue项目中openlayers绘制行政区划

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服务器之家。

原文链接：https://blog.csdn.net/qq_34893937/article/details/108519026