import * as mars3d from "mars3d"
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export let map // mars3d.Map三维地图对象
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export let graphicLayer // 矢量图层对象
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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: 31.760749, lng: 117.247058, alt: 3824, heading: 359, pitch: -33 }
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}
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}
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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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map.basemap = 2017 // 蓝色底图
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map.fixedLight = true // 固定光照，避免gltf模型随时间存在亮度不一致。
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// 创建Graphic图层
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graphicLayer = new mars3d.layer.GraphicLayer()
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map.addLayer(graphicLayer)
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// 在layer上绑定监听事件
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graphicLayer.on(mars3d.EventType.click, function (event) {
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const pickedItem = event.pickedObject?.data
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// let attr = event.graphic.attr
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console.log("单击了合并对象中的单个值为", pickedItem)
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// 测试修改model
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// let instance = event.pickedObject
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// let scaleMatrix = Cesium.Matrix4.fromUniformScale(1.1)
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// let modelMatrix = Cesium.Matrix4.multiply(instance.modelMatrix, scaleMatrix, new Cesium.Matrix4())
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// instance.modelMatrix = modelMatrix
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})
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bindLayerPopup() // 在图层上绑定popup,对所有加到这个图层的矢量数据都生效
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createCollection(1000)
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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 addDemoGraphic(count) {
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graphicLayer.clear()
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showLoading()
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const startTime = new Date().getTime()
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createCollection(count)
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hideLoading()
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const endTime = new Date().getTime()
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// 两个时间戳相差的毫秒数
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const usedTime = (endTime - startTime) / 1000
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globalMsg("共耗时" + usedTime.toFixed(2) + "秒")
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}
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// 在图层绑定Popup弹窗
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export function bindLayerPopup() {
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graphicLayer.bindPopup(function (event) {
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const attr = event.graphic.attr || {}
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attr["类型"] = event.graphic.type
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attr["来源"] = "我是layer上绑定的Popup"
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attr["备注"] = "我支持鼠标交互"
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return mars3d.Util.getTemplateHtml({ title: "矢量图层", template: "all", attr: attr })
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})
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}
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// 合并渲染
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function createCollection(count) {
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const arrData = []
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for (let j = 0; j < count; ++j) {
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arrData.push({
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position: randomPoint(),
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style: {
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heading: 270,
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scale: 30
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// scaleZ: 50
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},
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attr: {
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name: "第" + j + "个模型",
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time: new Date().toLocaleTimeString()
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}
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})
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}
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const modelCombine = new mars3d.graphic.ModelCombine({
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url: "//data.mars3d.cn/gltf/mars/fengche.gltf",
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instances: arrData
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})
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graphicLayer.addGraphic(modelCombine)
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// 测试定时更新
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// setInterval(() => {
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// for (let j = 0, len = arrData.length; j < len; ++j) {
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// const item = arrData[j]
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// item.position = randomPoint()// 随机坐标
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// item.attr.time = new Date().toLocaleTimeString()
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// }
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// modelCombine.instances = arrData
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// }, 5000)
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}
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// 取区域内的随机点
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function randomPoint() {
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const jd = random(117.184644 * 1000, 117.307163 * 1000) / 1000
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const wd = random(31.783595 * 1000, 31.87024 * 1000) / 1000
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return Cesium.Cartesian3.fromDegrees(jd, wd, 50)
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}
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function random(min, max) {
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return Math.floor(Math.random() * (max - min + 1) + min)
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}
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