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: 31.728284, lng: 117.274164, alt: 25061, heading: 358, pitch: -69 },
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fxaa: true
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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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const point = map.getCenter()
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point.format()
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eventTarget.fire("loadCenterPoint", { point })
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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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// 获取默认point点
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export function defultPoint() {
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const point = map.getCenter()
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point.format()
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return {
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lng: point.lng,
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lat: point.lat,
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alt: point.alt
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}
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}
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// 坐标转化的三种方法
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export function marsUtilFormtNum(item, num) {
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return mars3d.Util.formatNum(item, num)
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}
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export function marsPointTrans(item) {
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return mars3d.PointTrans.degree2dms(item)
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}
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export function marsProj4Trans(JD, WD, radio) {
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if (radio === "2") {
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return mars3d.PointTrans.proj4Trans([JD, WD], mars3d.CRS.EPSG4326, mars3d.CRS.CGCS2000_GK_Zone_6)
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} else {
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return mars3d.PointTrans.proj4Trans([JD, WD], mars3d.CRS.EPSG4326, mars3d.CRS.CGCS2000_GK_Zone_3)
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}
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}
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// 转换成十进制的方法
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export function marsDms2degree(du, fen, miao) {
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return mars3d.PointTrans.dms2degree(du, fen, miao)
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}
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export function marsZONEtoCRS(jd, wd, radio) {
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if (radio === "2") {
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return mars3d.PointTrans.proj4Trans([jd, wd], mars3d.CRS.CGCS2000_GK_Zone_6, mars3d.CRS.EPSG4326)
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} else {
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return mars3d.PointTrans.proj4Trans([jd, wd], mars3d.CRS.CGCS2000_GK_Zone_3, mars3d.CRS.EPSG4326)
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}
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}
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// 地图选点
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export function bindMourseClick() {
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map.setCursor(true)
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map.once(mars3d.EventType.click, function (event) {
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map.setCursor(false)
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const cartesian = event.cartesian
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const point = mars3d.LngLatPoint.fromCartesian(cartesian)
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point.format() // 经度、纬度、高度
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eventTarget.fire("clickMap", { point })
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})
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}
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let pointEntity
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export function updateMarker(hasCenter, jd, wd, alt) {
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const position = [jd, wd, alt]
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if (pointEntity == null) {
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pointEntity = new mars3d.graphic.PointEntity({
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position: position,
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style: {
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color: "#3388ff",
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pixelSize: 10,
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outlineColor: "#ffffff",
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outlineWidth: 2
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}
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})
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map.graphicLayer.addGraphic(pointEntity)
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} else {
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pointEntity.position = position
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}
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if (hasCenter) {
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pointEntity.flyTo({ radius: 1000 })
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}
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}
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