前端学习openLayers配合vue3（修改地图样式）

这一块的东西非常简单，基于上一步的继续操作

关键代码,当然对应的对象需要进行相关的引入，为了方便理解，把背景色和边框放在了一起

//填充颜色
          style:new Style({
            fill:new Fill({
              color: "rgba(255, 0, 0, 0.5)",
            })
          })

//边框
stroke: new Stroke({
              color: "black",
              width: 1,
            })

 

效果

 

 完整代码

<script setup>
import { onMounted, reactive, ref } from "vue";
import { Map, View } from "ol";
import TileLayer from "ol/layer/Tile";
import { OSM, XYZ } from "ol/source";
import { fromLonLat } from "ol/proj";
import VectorLayer from "ol/layer/Vector";
import VectorSource from "ol/source/Vector";
import GeoJSON from "ol/format/GeoJSON";
import Style from "ol/style/Style";
import Fill from "ol/style/Fill";
import Stroke from "ol/style/Stroke";
defineProps({
  msg: String,
});
let map = reactive("");
let view = reactive("");
let count=ref(0)
onMounted(() => {
  initMap();
});
let initMap = () => {
  (view = new View({
    center: [114.305469, 30.592876],
    zoom: 5,
    projection: "EPSG:4326",
  })),
    (map = new Map({
      target: "map", //挂载视图的容器
      layers: [
        //瓦片图层source第三方，或者自带的,地图的底层
        new TileLayer({
          // source: new OSM(),//内置的国外地址，需要代理
          source: new XYZ({
            url: "http://wprd0{1-4}.is.autonavi.com/appmaptile?x={x}&y={y}&z={z}&lang=zh_cn&size=1&scl=1&style=7",
          }), //国内第三方数据源
        }),
        // 矢量图层
        new VectorLayer({
          source: new VectorSource({
            url: "https://geo.datav.aliyun.com/areas_v3/bound/100000_full.json",
            format: new GeoJSON(),
          }),
          //填充颜色
          style: new Style({
            fill: new Fill({
              color: "rgba(255, 0, 0, 0.5)",
            }),
            stroke: new Stroke({
              color: "black",
              width: 1,
            })
          }),
        }),
      ],


      //视图
      view: view,
    }));



  map
    .getLayers()//获取所有图层
    .item(1)//获取矢量图层
    .getSource()
    .on("change", function () {
      // 获取图层的 features
      count=this.getFeatures().length
    });
};
let move = () => {
  // 设置北京的经纬度
  const beijing = [116.46, 39.92];
  const view = map.getView();
  view.animate({
    center: beijing,
    zoom: 10,
    projection: "EPSG:4356",
  });
};
</script>



<template>
  <div id="map">
    <div class="btns">
      <button @click="move">中国有{{ count }}个省份</button>
    </div>
  </div>
</template>



<style scoped>
.btns {
  display: flex;
  position: fixed;
  left: 20px;
  bottom: 20px;



  z-index: 999;
}
.btns div {
  width: 100px;
  height: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}
.read-the-docs {
  color: #888;
}
#map {
  margin: 0;
  width: 100vw;
  height: 100vh;
}
</style>