demo源码运行环境以及配置
- 运行环境:依赖Node安装环境,demo本地Node版本:14.19.1。
- 运行工具:vscode或者其他工具。
- 配置方式:下载demo源码,vscode打开,然后顺序执行以下命令: (1)下载demo环境依赖包命令:npm i (2)启动demo命令:npm run dev (3)打包demo命令: npm run build:release
示例效果
本篇主要利用 leaflet 的插件 leaflet.vectorgrid 实现两种不同数据源的矢量瓦片渲染加载效果:
调用 geoserver 发布的 pbf 矢量瓦片服务
加载 geojson 数据源渲染矢量瓦片
leaflet.vectorgrid 插件 github 地址:https://github.com/Leaflet/Leaflet.VectorGrid
- 实现方式1:调用geoserver发布的pbf矢量瓦片服务
- geoserver 安装矢量瓦片插件,用来拓展支持发布矢量瓦片服务,具体可以参考以下资料:
https://www.jianshu.com/p/6d0cb4d0e432
https://blog.youkuaiyun.com/qq_36061233/article/details/84751073
https://blog.youkuaiyun.com/qq_28418387/article/details/82823725 - geoserver安装好矢量瓦片以及发布矢量瓦片服务之后,可以利用leaflet.vectorgrid插件来调用矢量瓦片服务渲染加载
- 实现方式2:加载geojson数据源渲染矢量瓦片
- 核心源码
<template>
<div id="map"></div>
<div class="titleContainer center">
<span>vue+leaflet示例:矢量瓦片展示</span>
</div>
</template>
<script setup>
import { onMounted, reactive, ref } from "vue";
import L from "leaflet";
import "leaflet.vectorgrid"; //引用矢量瓦片插件
import config from "../config";
let map = null;
let myConfig = {};
let spothighlight = null;
let geojsonData = null; // demo由于数据保密性,模拟geojson数据源需要自己去构造
//矢量瓦片高亮样式符号style
const highlightstyle = {
fillColor: "#e6d933",
fillOpacity: 0.1,
stroke: true,
fill: true,
color: "#00bfff",
opacity: 1,
weight: 3,
dashArray: "5",
};
onMounted(() => {
initMap();
});
const initMap = () => {
// 创建地图对象
map = L.map("map", {
attributionControl: false,
}).setView(config.mapInitParams.center, config.mapInitParams.zoom);
//创建底图切换数据源
const baseLayer2 = L.tileLayer(config.baseMaps[1].Url); //ArcGIS影像图
map.addLayer(baseLayer2);
//加载项目红线矢量瓦片
loadGeojsonVectorLayer();
//加载扰动图斑矢量瓦片
loadVectorPbfLayer();
//清空图斑高亮效果
map.on('click', clearSpotHighlight);
};
//设置图斑的样式
const getSpotVectorStyles = async (layerName) => {
let style = {};
style[layerName] = function (properties, zoom) {
const symbol = {
color: "#ffd700",
fillColor: "#e6d933",
fillOpacity: 0.1,
fill: true,
opacity: 1,
weight: 3,
dashArray: "5",
};
return symbol;
};
return style;
};
//清空扰动图斑高亮效果
const clearSpotHighlight = async () => {
if (spothighlight) {
myConfig.spotPbfLayer.resetFeatureStyle(spothighlight);
}
spothighlight = null;
};
//加载Pbf形式矢量瓦片函数
const loadVectorPbfLayer = async () => {
// var localUrl = "http://localhost:8080/geoserver/gwc/service/wmts?" +
// "REQUEST=GetTile&SERVICE=WMTS&VERSION=1.0.0&LAYER=ZKYGIS:bs_spot_t" +
// "&STYLE=&TILEMATRIX=EPSG:900913:{z}&TILEMATRIXSET=EPSG:900913&" +
// "FORMAT=application/x-protobuf;type=mapbox-vector&TILECOL={x}&TILEROW={y}";
var localUrl =
"http://localhost:8080/geoserver/gwc/service/tms/1.0.0/ZKYGIS:bs_spot_t@EPSG:900913@pbf/{z}/{x}/{-y}.pbf";
var localVectorTileOptions = {
rendererFactory: L.canvas.tile, //渲染方式 canvas
//rendererFactory: L.svg.tile,
interactive: true, //设置true,允许鼠标交互事件
getFeatureId: function (f) {
return f.properties.map_num;
},
vectorTileLayerStyles: getSpotVectorStyles("bs_spot_t"), //设置矢量渲染的样式符号
};
};
……
</script>
<style scoped>
#map {
width: 100vw;
height: 100vh;
}
.titleContainer {
position: absolute;
top: 0;
background: rgba(0, 0, 0, 0.45);
height: 50px;
width: 100vw;
z-index: 999;
font-size: 14px;
color: #fff;
font-size: 28px;
}
.center {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
}
</style>