import * as mars3d from "mars3d"
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export let map // mars3d.Map三维地图对象
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let shadows
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export const mapOptions = {
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scene: {
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center: { lat: 33.596051, lng: 119.031383, alt: 359, heading: 180, pitch: -43 },
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fxaa: true,
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globe: {
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baseColor: "#000"
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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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globalNotify("已知问题提示", `模型上日照阴影可能存在锯齿。`)
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// let imageryLayer = map.scene.imageryLayers.get(0)
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// imageryLayer.dayAlpha = 0.1 //白天图层透明值
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// imageryLayer.nightAlpha = 1.0 //夜晚图层透明值
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// 加个模型
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const tilesetLayer = new mars3d.layer.TilesetLayer({
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url: "//data.mars3d.cn/3dtiles/qx-simiao/tileset.json",
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position: { alt: 80.6 },
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maximumScreenSpaceError: 1,
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maximumMemoryUsage: 1024,
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shadows: Cesium.ShadowMode.ENABLED
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})
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map.addLayer(tilesetLayer)
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shadows = new mars3d.thing.Shadows({
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multiplier: 1600
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})
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map.addThing(shadows)
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shadows.on(mars3d.EventType.change, function () {
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const shadowTime = shadows.time
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eventTarget.fire("changeShadows", { shadowTime })
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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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}
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export function stopPlay() {
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if (shadows && shadows.isStart) {
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shadows.pause()
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}
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}
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/**
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* 开始播放
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*
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* @export
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* @param {*} date 年月日
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* @param {number} hours 小时
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* @param {number} minutes 分钟
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*/
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export function startPlay(date, hours, minutes) {
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const currentTime = setShadows(date, hours, minutes)
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const startDate = new Date(date + " 00:00:00")
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const endDate = new Date(date + " 23:59:59")
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shadows.start(startDate, endDate, currentTime)
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}
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/**
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* 修改shadows 当前时间
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*
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* @export
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* @param {*} date 年月日
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* @param {number} hours 小时
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* @param {number} minutes 分钟
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*/
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export function setShadows(date, hours, minutes) {
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const dateTime = new Date(`${date} ${hours}:${minutes}:00`)
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shadows.time = dateTime
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return dateTime
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}
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