import * as mars3d from "mars3d"
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export let map // mars3d.Map三维地图对象
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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: 31.675177, lng: 117.323257, alt: 81193, heading: 0, pitch: -79 }
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},
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// 方式1：在创建地球前的参数中配置
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basemaps: [
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{
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name: "ArcGIS影像",
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icon: "img/basemaps/esriWorldImagery.png",
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type: "arcgis",
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layer: "img_d", // 使用layer时会自动用内部固定url "https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer"
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enablePickFeatures: false,
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show: true
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},
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{
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name: "ArcGIS电子街道",
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icon: "img/basemaps/google_vec.png",
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type: "arcgis",
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url: "https://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer",
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enablePickFeatures: false
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},
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{
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name: "ArcGIS NatGeo",
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icon: "img/basemaps/esriWorldStreetMap.png",
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type: "arcgis",
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url: "https://services.arcgisonline.com/ArcGIS/rest/services/NatGeo_World_Map/MapServer",
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enablePickFeatures: false
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},
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{
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name: "蓝色底图",
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icon: "img/basemaps/bd-c-midnight.png",
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type: "arcgis",
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url: "http://map.geoq.cn/arcgis/rest/services/ChinaOnlineStreetPurplishBlue/MapServer",
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enablePickFeatures: false,
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chinaCRS: mars3d.ChinaCRS.GCJ02
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},
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{
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name: "灰色底图",
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icon: "img/basemaps/bd-c-grayscale.png",
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type: "arcgis",
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url: "http://map.geoq.cn/arcgis/rest/services/ChinaOnlineStreetGray/MapServer",
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enablePickFeatures: false,
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chinaCRS: mars3d.ChinaCRS.GCJ02
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}
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]
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}
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export const eventTarget = new mars3d.BaseClass() // 事件对象，用于抛出事件到面板中
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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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eventTarget.fire("mapLoaded")
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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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}
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// 叠加的图层
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let tileLayer
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export function addLayer() {
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removeLayer()
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// 方式2：在创建地球后调用addLayer添加图层(直接new对应type类型的图层类)
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tileLayer = new mars3d.layer.ArcGisLayer({
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url: "http://map.geoq.cn/arcgis/rest/services/ChinaOnlineStreetGray/MapServer",
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enablePickFeatures: false
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// queryParameters: {
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// mosaicRule: `{"where":"t='20180525'"}`,
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// },
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})
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map.addLayer(tileLayer)
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}
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export function removeLayer() {
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if (tileLayer) {
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map.removeLayer(tileLayer, true)
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tileLayer = null
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}
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}
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