import * as mars3d from "mars3d"
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export let map // mars3d.Map三维地图对象
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export let graphicLayer // 矢量图层对象
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let arrData
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// 需要覆盖config.json中地图属性参数（当前示例框架中自动处理合并）
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export const mapOptions = {
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scene: {
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center: { lat: 24.688611, lng: 119.260277, alt: 1673759, heading: 348, pitch: -69 }
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}
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}
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/**
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* 初始化地图业务，生命周期钩子函数（必须）
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* 框架在地图初始化完成后自动调用该函数
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* @param {mars3d.Map} mapInstance 地图对象
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* @returns {void} 无
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*/
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export function onMounted(mapInstance) {
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map = mapInstance // 记录map
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// 创建矢量数据图层
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graphicLayer = new mars3d.layer.GraphicLayer({
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// 点的聚合配置
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clustering: {
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enabled: true,
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pixelRange: 20
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// opacity: 1,
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// getImage: function (count) { //getImage是完全自定义方式
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// let colorIn
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// if (count < 10) {
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// colorIn = 'rgba(110, 204, 57, 0.6)'
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// } else if (count < 100) {
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// colorIn = 'rgba(240, 194, 12, 0.6)'
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// } else {
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// colorIn = 'rgba(241, 128, 23, 0.6)'
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// }
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// return mars3d.Util.getCircleImage(count, {
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// color: colorIn,
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// radius: 30,
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// })
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// },
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}
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// tooltip: '{text}',
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})
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map.addLayer(graphicLayer)
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// 访问后端接口，取数据
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mars3d.Util.fetchJson({ url: "//data.mars3d.cn/file/apidemo/mudi.json" })
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.then(function (res) {
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arrData = res.data
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addFeature(graphicLayer, arrData)
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})
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.catch(function (error) {
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console.log("加载JSON出错", error)
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})
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}
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/**
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* 释放当前地图业务的生命周期函数
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* @returns {void} 无
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*/
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export function onUnmounted() {
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map = null
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graphicLayer.remove()
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graphicLayer = null
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}
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function addFeature(graphicLayer, arr) {
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graphicLayer.bindPopup(function (event) {
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const item = event.graphic?.attr
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if (!item) {
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return false
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}
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const inthtml = `<table style="width: auto;">
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<tr>
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<th scope="col" colspan="2" style="text-align:center;font-size:15px;">${item.text} </th>
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</tr>
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<tr>
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<td>省：</td><td>${item.province}</td>
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</tr>
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<tr>
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<td>市：</td> <td>${item.city}</td>
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</tr>
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<tr>
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<td>县/区：</td> <td>${item.district}</td>
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</tr>
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<tr>
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<td>地址：</td> <td>${item.address}</td>
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</tr>
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<tr>
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<td>视频：</td> <td><video src='http://data.mars3d.cn/file/video/lukou.mp4' controls autoplay style="width: 300px;" ></video></td>
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</tr>
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</table>`
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return inthtml
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})
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// 单击事件
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graphicLayer.on(mars3d.EventType.click, function (event) {
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console.log("你单击了", event)
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if (map.camera.positionCartographic.height > 90000) {
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const graphic = event.graphic
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// graphic.closePopup()
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if (graphic) {
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// 单击了具体的点对象
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const position = graphic.positionShow
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map.flyToPoint(position, {
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radius: 5000, // 距离目标点的距离
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duration: 4,
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complete: function (e) {
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// 飞行完成回调方法
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// graphic.openPopup()
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}
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})
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} else {
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// 单击了聚合的点
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const arrEntity = event.pickedObject.id
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map.flyTo(arrEntity)
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}
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}
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})
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for (let i = 0, len = arr.length; i < len; i++) {
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const item = arr[i]
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const graphic = new mars3d.graphic.BillboardEntity({
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position: new mars3d.LngLatPoint(item.lng, item.lat, item.z || 0),
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style: {
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image: "img/marker/mark3.png",
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horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
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verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
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scaleByDistance: new Cesium.NearFarScalar(1000, 0.7, 5000000, 0.3),
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label: {
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text: item.text,
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font_size: 19,
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color: Cesium.Color.AZURE,
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outline: true,
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outlineColor: Cesium.Color.BLACK,
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outlineWidth: 2,
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horizontalOrigin: Cesium.HorizontalOrigin.LEFT,
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verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
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pixelOffset: new Cesium.Cartesian2(10, 0), // 偏移量
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distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0.0, 80000)
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}
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},
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attr: item
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})
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graphicLayer.addGraphic(graphic)
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}
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}
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// 计算贴地高度示例代码，可以将获取到的高度更新到数据库内，后续不用重复计算。
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export function getDataSurfaceHeight() {
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if (!arrData) {
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globalMsg("数据尚未加载成功！")
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return
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}
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const lonCol = "lng"
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const latCol = "lat"
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const heightCol = "z"
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const positions = []
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for (let i = 0, len = arrData.length; i < len; i++) {
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const item = arrData[i]
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// 所在经纬度坐标及海拔高度
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const longitude = Number(item[lonCol])
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const latitude = Number(item[latCol])
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const height = Number(item[heightCol] || 0)
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const position = Cesium.Cartesian3.fromDegrees(longitude, latitude, height)
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positions.push(position)
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}
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showLoading()
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mars3d.PolyUtil.computeSurfacePoints({
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map: map,
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positions: positions
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}).then((result) => {
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hideLoading()
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if (result.noHeight) {
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console.log("部分数据未获取到高度值，贴地高度计算存在误差")
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}
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for (let i = 0, len = arrData.length; i < len; i++) {
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const item = arrData[i]
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const point = mars3d.LngLatPoint.fromCartesian(result.positions[i])
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item[lonCol] = point.lng
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item[latCol] = point.lat
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item[heightCol] = point.alt // 得到计算的高度值
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}
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mars3d.Util.downloadFile("point.json", JSON.stringify({ data: arrData }))
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})
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}
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export function enabledAggressive(val) {
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graphicLayer.clustering = val
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}
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