网站更改公司需要重新备案吗推广软文范文800字

目录

一、案例截图

二、安装OpenLayers库

三、代码实现

3.1、HTML页面

3.2、初始化变量

3.3、创建起始点位

3.4、遍历轨迹点

3.5、画折线

3.6、初始化弹窗信息

3.7、初始化地图上标点的点击事件

3.8、完整代码

四、Gitee源码

---

一、案例截图

二、安装OpenLayers库

npm install ol

三、代码实现

整体的实现思路：

1、创建开始、结束点位。

2、遍历轨迹点信息

3、画出轨迹折线

4、初始化弹窗样式

5、初始化地图上标点的点击事件。

3.1、HTML页面

关键代码：

<template><div><div id="map-container"></div><div id="popup-box" class="popup-box"><button id="close-button" class="close-button">&times;</button><div id="popup-content" class="popup-content"></div></div></div>
</template>

3.2、初始化变量

关键代码：

data() {return {map:null,overLay:null,// 定义路径坐标pointList: [[120.430070,31.938140],[120.428570,31.939100],[120.429530,31.941680],[120.431240,31.943580],[120.432410,31.944820],[120.433600,31.943970],],pointLayer: new VectorLayer({source: new VectorSource(),zIndex: 5}),}
},

3.3、创建起始点位

关键代码：

/*** 创建开始点位*/
createStartPoint(){// 创建feature要素，一个feature就是一个点坐标信息let feature = new Feature({geometry: new Point(this.pointList[0]),});// 设置要素的图标feature.setStyle(new Style({// 设置图片效果image: new Icon({src: 'http://lbs.tianditu.gov.cn/images/bus/start.png',// anchor: [0.5, 0.5],scale: 1,}),zIndex: 10,}),);this.pointLayer.getSource().addFeature(feature);
},

//创建结束点位
createEndPoint(){// 创建feature要素，一个feature就是一个点坐标信息let feature = new Feature({geometry: new Point(this.pointList[this.pointList.length-1]),});// 设置要素的图标feature.setStyle(new Style({// 设置图片效果image: new Icon({src: 'http://lbs.tianditu.gov.cn/images/bus/end.png',// anchor: [0.5, 0.5],scale: 1,}),zIndex: 10}),);this.pointLayer.getSource().addFeature(feature);
},

3.4、遍历轨迹点

先封装一个创建轨迹点的方法：

关键代码：

//创建轨迹点位
addPoint(coordinate) {// 创建feature要素，一个feature就是一个点坐标信息let feature = new Feature({geometry: new Point(coordinate),});// 设置要素的图标feature.setStyle(new Style({// 使用 Circle 图形image: new Circle({radius: 10, // 圆的半径fill: new Fill({color: 'white', // 内部颜色}),stroke: new Stroke({color: 'blue', // 外部颜色width: 3, // 外圈线宽}),}),zIndex: 5}),);return feature;
},

遍历轨迹点：

关键代码：

/*** 遍历点位*/
drawPoints(){this.createStartPoint();for(let i = 0 ; i < this.pointList.length ; i++){let feature = this.addPoint(this.pointList[i]);this.pointLayer.getSource().addFeature(feature);}this.createEndPoint();this.map.addLayer(this.pointLayer);
},

3.5、画折线

关键代码：

//画线
drawLine(){// 创建线特征const lineFeature = new Feature({geometry: new LineString(this.pointList),});// 设置线样式const lineStyle = new Style({stroke: new Stroke({color: '#25C2F2',width: 4,lineDash: [10, 8], // 使用点划线 数组的值来控制虚线的长度和间距}),});lineFeature.setStyle(lineStyle);// 创建矢量层并添加特征const vectorSource = new VectorSource({features: [lineFeature],});const vectorLayer = new VectorLayer({source: vectorSource,zIndex: 1});// 将矢量层添加到地图this.map.addLayer(vectorLayer);// 设置地图视图以适应路径this.map.getView().fit(lineFeature.getGeometry().getExtent(), {padding: [20, 20, 20, 20],maxZoom: 18,});
},

3.6、初始化弹窗信息

关键代码：

/*** 初始化弹窗信息*/
initPointWindow() {let popupBox = document.getElementById('popup-box');let closeButton = document.getElementById('close-button');//用于显示详情页面的窗口（根据经纬度来的，位置不固定）this.overlay = new Overlay({element: popupBox,autoPan: {animation: {duration: 250,},},offset:[0,-20],});this.map.addOverlay(this.overlay);// 关闭弹出框的事件处理let _that = this;closeButton.addEventListener('click', () => {_that.overlay.setPosition(undefined); // 关闭弹出框});
},

3.7、初始化地图上标点的点击事件

关键代码：

/*** 初始化地图上标点的点击事件*/
initPointEvent(){let _that = this;//给点初始化点击事件this.map.on("singleclick", (e) => {let pixel = this.map.getEventPixel(e.originalEvent);let feature = this.map.forEachFeatureAtPixel(pixel, function(feature) { return feature; });let coordinates = e.coordinate;if(feature){_that.overlay.setPosition(coordinates);let popupContent = document.getElementById('popup-content');popupContent.innerHTML = `<div>经度：${coordinates[0]}</div><div>纬度：${coordinates[1]}</div>`;}});
},

3.8、完整代码

<template><div><div id="map-container"></div><div id="popup-box" class="popup-box"><button id="close-button" class="close-button">&times;</button><div id="popup-content" class="popup-content"></div></div></div>
</template>
<script>
import { Map, View } from 'ol'
import {Tile as TileLayer} from 'ol/layer'
import Overlay from 'ol/Overlay';
import { get } from 'ol/proj';
import { getWidth, getTopLeft } from 'ol/extent'
import { WMTS } from 'ol/source'
import WMTSTileGrid from 'ol/tilegrid/WMTS'
import { defaults as defaultControls} from 'ol/control';
import 'ol/ol.css';
import OSM from 'ol/source/OSM';
import { Feature } from 'ol';
import LineString from 'ol/geom/LineString';
import VectorSource from 'ol/source/Vector';
import VectorLayer from 'ol/layer/Vector';
import Style from 'ol/style/Style';
import Stroke from 'ol/style/Stroke';
import {Circle, Fill, Icon} from "ol/style";
import CircleStyle from "ol/style/Circle";
import {Point} from "ol/geom";export const projection = get("EPSG:4326");
const projectionExtent = projection.getExtent();
const size = getWidth(projectionExtent) / 256;
const resolutions = [];
for (let z = 0; z < 19; ++z) {resolutions[z] = size / Math.pow(2, z);
}export default {data() {return {map:null,overLay:null,// 定义路径坐标pointList: [[120.430070,31.938140],[120.428570,31.939100],[120.429530,31.941680],[120.431240,31.943580],[120.432410,31.944820],[120.433600,31.943970],],pointLayer: new VectorLayer({source: new VectorSource(),zIndex: 5}),}},mounted(){this.initMap() // 加载矢量底图},methods:{initMap() {const KEY = '你申请的KEY'this.map = new Map({target: 'map-container',layers: [// 底图new TileLayer({source: new WMTS({url: `http://t{0-6}.tianditu.com/vec_c/wmts?tk=${KEY}`,layer: 'vec', // 矢量底图matrixSet: 'c', // c: 经纬度投影 w: 球面墨卡托投影style: "default",crossOrigin: 'anonymous', // 解决跨域问题 如无该需求可不添加format: "tiles", //请求的图层格式，这里指定为瓦片格式wrapX: true, // 允许地图在 X 方向重复（环绕）tileGrid: new WMTSTileGrid({origin: getTopLeft(projectionExtent),resolutions: resolutions,matrixIds: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15','16','17','18']})})}),// 标注new TileLayer({source: new WMTS({url: `http://t{0-6}.tianditu.com/cva_c/wmts?tk=${KEY}`,layer: 'cva', //矢量注记matrixSet: 'c',style: "default",crossOrigin: 'anonymous',format: "tiles",wrapX: true,tileGrid: new WMTSTileGrid({origin: getTopLeft(projectionExtent),resolutions: resolutions,matrixIds: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15','16','17','18']})})})],view: new View({center: [119.975000,31.809701],projection: projection,zoom: 12,maxZoom: 17,minZoom: 1}),//加载控件到地图容器中controls: defaultControls({zoom: false,rotate: false,attribution: false})});//画点this.drawPoints();//画线this.drawLine();//初始化窗体this.initPointWindow();//初始化标点点击事件this.initPointEvent();},/*** 创建开始点位*/createStartPoint(){// 创建feature要素，一个feature就是一个点坐标信息let feature = new Feature({geometry: new Point(this.pointList[0]),});// 设置要素的图标feature.setStyle(new Style({// 设置图片效果image: new Icon({src: 'http://lbs.tianditu.gov.cn/images/bus/start.png',// anchor: [0.5, 0.5],scale: 1,}),zIndex: 10,}),);this.pointLayer.getSource().addFeature(feature);},//创建结束点位createEndPoint(){// 创建feature要素，一个feature就是一个点坐标信息let feature = new Feature({geometry: new Point(this.pointList[this.pointList.length-1]),});// 设置要素的图标feature.setStyle(new Style({// 设置图片效果image: new Icon({src: 'http://lbs.tianditu.gov.cn/images/bus/end.png',// anchor: [0.5, 0.5],scale: 1,}),zIndex: 10}),);this.pointLayer.getSource().addFeature(feature);},//创建轨迹点位addPoint(coordinate) {// 创建feature要素，一个feature就是一个点坐标信息let feature = new Feature({geometry: new Point(coordinate),});// 设置要素的图标feature.setStyle(new Style({// 使用 Circle 图形image: new Circle({radius: 10, // 圆的半径fill: new Fill({color: 'white', // 内部颜色}),stroke: new Stroke({color: 'blue', // 外部颜色width: 3, // 外圈线宽}),}),zIndex: 5}),);return feature;},/*** 遍历点位*/drawPoints(){this.createStartPoint();for(let i = 0 ; i < this.pointList.length ; i++){let feature = this.addPoint(this.pointList[i]);this.pointLayer.getSource().addFeature(feature);}this.createEndPoint();this.map.addLayer(this.pointLayer);},//画线drawLine(){// 创建线特征const lineFeature = new Feature({geometry: new LineString(this.pointList),});// 设置线样式const lineStyle = new Style({stroke: new Stroke({color: '#25C2F2',width: 4,lineDash: [10, 8], // 使用点划线 数组的值来控制虚线的长度和间距}),});lineFeature.setStyle(lineStyle);// 创建矢量层并添加特征const vectorSource = new VectorSource({features: [lineFeature],});const vectorLayer = new VectorLayer({source: vectorSource,zIndex: 1});// 将矢量层添加到地图this.map.addLayer(vectorLayer);// 设置地图视图以适应路径this.map.getView().fit(lineFeature.getGeometry().getExtent(), {padding: [20, 20, 20, 20],maxZoom: 18,});},/*** 初始化地图上标点的点击事件*/initPointEvent(){let _that = this;//给点初始化点击事件this.map.on("singleclick", (e) => {let pixel = this.map.getEventPixel(e.originalEvent);let feature = this.map.forEachFeatureAtPixel(pixel, function(feature) { return feature; });let coordinates = e.coordinate;if(feature){_that.overlay.setPosition(coordinates);let popupContent = document.getElementById('popup-content');popupContent.innerHTML = `<div>经度：${coordinates[0]}</div><div>纬度：${coordinates[1]}</div>`;}});},/*** 初始化弹窗信息*/initPointWindow() {let popupBox = document.getElementById('popup-box');let closeButton = document.getElementById('close-button');//用于显示详情页面的窗口（根据经纬度来的，位置不固定）this.overlay = new Overlay({element: popupBox,autoPan: {animation: {duration: 250,},},offset:[0,-20],});this.map.addOverlay(this.overlay);// 关闭弹出框的事件处理let _that = this;closeButton.addEventListener('click', () => {_that.overlay.setPosition(undefined); // 关闭弹出框});},}
}
</script>
<style scoped>
#map-container {width: 100%;height: 100vh;
}
.popup-box {background: rgba(255, 255, 255, 0.95);border: 1px solid #ccc;border-radius: 8px;padding: 20px;z-index: 1000;box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);transition: all 0.3s ease;max-width: 300px;font-family: 'Arial', sans-serif;position: absolute;transform: translate(-50%, -100%); /* 使弹出框上移并居中 */
}/* 添加箭头样式 */
.popup-box::after {content: "";position: absolute;top: 100%; /* 箭头位于弹出框的底部 */left: 50%; /* 箭头横向居中 */margin-left: -6px; /* 调整箭头与弹出框的间距 */border-width: 6px; /* 箭头的大小 */border-style: solid;border-color: rgba(255, 255, 255, 0.95) transparent transparent transparent; /* 箭头的颜色 */
}.close-button {background: none;color: gray;border: none;font-size: 20px;position: absolute;top: 10px;right: 10px;cursor: pointer;
}.popup-content {width: 240px;margin-top: 10px;font-size: 16px;line-height: 1.5;
}
</style>

四、Gitee源码

地址：Vue2+OpenLayers实现折线绘制起始点标记和轨迹打点的完整功能