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| import * as mars3d from "mars3d"
|
| export let map // mars3d.Map三维地图对象
|
| // 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）
| export const mapOptions = {
| scene: {
| center: { lat: 28.348014, lng: 118.789746, alt: 840941, heading: 350, pitch: -66 }
| }
| }
|
| /**
| * 初始化地图业务，生命周期钩子函数（必须）
| * 框架在地图初始化完成后自动调用该函数
| * @param {mars3d.Map} mapInstance 地图对象
| * @returns {void} 无
| */
| export function onMounted(mapInstance) {
| map = mapInstance // 记录首次创建的map
|
| // 创建Echarts图层
| createEchartsLayer()
| }
|
| /**
| * 释放当前地图业务的生命周期函数
| * @returns {void} 无
| */
| export function onUnmounted() {
| map = null
| }
|
| function createEchartsLayer() {
| const options = getEchartsOption()
| options.clampToGround = true // 计算贴地高度
| const echartsLayer = new mars3d.layer.EchartsLayer(options)
| map.addLayer(echartsLayer)
|
| // 图表自适应
| window.addEventListener("resize", function () {
| echartsLayer.resize()
| })
| }
|
| /**
| *echart图层
| *
| * @return {option} echart图表的数据
| */
| function getEchartsOption() {
| const data = [
| {
| name: "六安市",
| value: 112,
| location: [116.3123, 31.8329]
| },
| {
| name: "安庆市",
| value: 424,
| location: [116.7517, 30.5255]
| },
| {
| name: "滁州市",
| value: 76,
| location: [118.1909, 32.536]
| },
| {
| name: "宣城市",
| value: 45,
| location: [118.8062, 30.6244]
| },
| {
| name: "阜阳市",
| value: 234,
| location: [115.7629, 32.9919]
| },
| {
| name: "宿州市",
| value: 110,
| location: [117.5208, 33.6841]
| },
| {
| name: "黄山市",
| value: 98,
| location: [118.0481, 29.9542]
| },
| {
| name: "巢湖市",
| value: 71,
| location: [117.7734, 31.4978]
| },
| {
| name: "亳州市",
| value: 165,
| location: [116.1914, 33.4698]
| },
| {
| name: "池州市",
| value: 12,
| location: [117.3889, 30.2014]
| },
| {
| name: "合肥市",
| value: 232,
| location: [117.29, 32.0581]
| },
| {
| name: "蚌埠市",
| value: 123,
| location: [117.4109, 33.1073]
| },
| {
| name: "芜湖市",
| value: 73,
| location: [118.3557, 31.0858]
| },
| {
| name: "淮北市",
| value: 16,
| location: [116.6968, 33.6896]
| },
| {
| name: "淮南市",
| value: 75,
| location: [116.7847, 32.7722]
| },
| {
| name: "马鞍山市",
| value: 45,
| location: [118.6304, 31.5363]
| },
| {
| name: "铜陵市",
| value: 93,
| location: [117.9382, 30.9375]
| }
| ]
|
| // 纬度做偏移处理,避免重叠
| if (data.length > 1) {
| data.sort(function (a, b) {
| return b.location[1] - a.location[1]
| })
| for (let i = 1; i < data.length; i++) {
| const thisItem = data[i].location
|
| let ispy = false
| for (let j = 0; j < i; j++) {
| const lastItem = data[j].location
| const offX = Math.abs(lastItem[0] - thisItem[0])
| const offY = Math.abs(lastItem[1] - thisItem[1])
| if (offX < 0.025 && offY < 0.005) {
| ispy = true
| break
| }
| }
|
| if (ispy) {
| thisItem[1] -= 0.006 // 偏移纬度
| }
| }
| }
|
| let sum = 0
| const dataVals = []
| for (let i = 0; i < data.length; i++) {
| sum += data[i].value
|
| dataVals.push({
| name: data[i].name,
| value: data[i].location.concat(data[i].value)
| })
| }
|
| const option = {
| animation: false,
| backgroundColor: "rgba(0, 0, 0, 0.4)",
|
| tooltip: {
| trigger: "item"
| },
| series: [
| {
| type: "effectScatter",
| coordinateSystem: "mars3dMap",
| data: dataVals,
| symbolSize: function (val) {
| if (sum === 0) {
| return 8
| }
|
| const num = (val[2] / sum) * 150
| return Math.max(num, 8)
| },
| showEffectOn: "render",
| rippleEffect: {
| brushType: "stroke"
| },
| hoverAnimation: true,
| label: {
| formatter: "{b}",
| position: "right",
| color: "inherit",
| fontSize: "18",
| show: true
| },
| tooltip: {
| formatter: function (params, ticket, callback) {
| if (params.value[2] <= 0) {
| return params.name
| } else {
| return params.name + " ： " + params.value[2]
| }
| }
| },
| itemStyle: {
| color: "#ffff00",
| shadowBlur: 60,
| shadowColor: "#cccccc"
| },
| zlevel: 1
| }
| ]
| }
| return option
| }
|
|
