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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: 26.339073, lng: 118.495643, alt: 937783, heading: 355, pitch: -58 }
| }
| }
|
| /**
| * 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map
| map.basemap = 2017 // 蓝色底图
|
| addDemoGraphics()
| }
|
| /**
| * 释放当前地图业务的生命周期函数
| * @returns {void} 无
| */
| export function onUnmounted() {
| map = null
| }
|
| function addDemoGraphics() {
| const geoJsonLayer = new mars3d.layer.GeoJsonLayer({
| name: "安徽各市",
| url: "//data.mars3d.cn/file/geojson/areas/340000_full.json",
| symbol: {
| type: "polygon",
| styleOptions: {
| materialType: mars3d.MaterialType.PolyGradient, // 重要参数，指定材质
| color: "#3388cc",
| opacity: 0.7,
| alphaPower: 1.3,
| // 面中心点，显示文字的配置
| label: {
| text: "{name}", // 对应的属性名称
| opacity: 1,
| font_size: 25,
| color: "#fff",
| font_family: "楷体",
| outline: false,
| scaleByDistance: true,
| scaleByDistance_far: 20000000,
| scaleByDistance_farValue: 0.1,
| scaleByDistance_near: 1000,
| scaleByDistance_nearValue: 1
| }
| },
| callback: function (attr, styleOpt) {
| const randomHeight = attr.gdp * 5 // 测试的高度
| return {
| color: getColor(),
| diffHeight: randomHeight
| }
| }
| },
| popup: "{name}"
| })
| map.addLayer(geoJsonLayer)
|
| // 绑定事件
| geoJsonLayer.on(mars3d.EventType.load, function (event) {
| console.log("数据加载完成", event)
| })
| geoJsonLayer.on(mars3d.EventType.click, function (event) {
| console.log("单击了图层", event)
| })
| }
|
| const arrColor = ["rgb(15,176,255)", "rgb(18,76,154)", "#40C4E4", "#42B2BE", "rgb(51,176,204)", "#8CB7E5", "rgb(0,244,188)", "#139FF0"]
|
| let index = 0
| function getColor() {
| return arrColor[++index % arrColor.length]
| }
|
|
