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
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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: 39.564004, lng: 116.394499, alt: 55751, heading: 0, pitch: -56 }
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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 = "黑色底图"
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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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console.log("监听layer，单击了矢量对象", event)
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})
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// 在layer上绑定Popup弹窗
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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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Cesium.Resource.fetchJson("//data.mars3d.cn/file/apidemo/bjgj.json").then(function (data) {
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const busLines = []
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data.forEach(function (busLine, idx) {
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let prevPt
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const points = []
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for (let i = 0; i < busLine.length; i += 2) {
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let pt = [busLine[i], busLine[i + 1]]
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if (i > 0) {
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pt = [prevPt[0] + pt[0], prevPt[1] + pt[1]]
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}
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prevPt = pt
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const longitude = pt[0] / 1e4
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const latitude = pt[1] / 1e4
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const cart = Cesium.Cartesian3.fromDegrees(longitude, latitude, 100.0)
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points.push(cart)
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}
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busLines.push({
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positions: points,
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color: new Cesium.Color(Math.random() * 0.5 + 0.5, Math.random() * 0.8 + 0.2, 0.0, 1.0),
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speed: 2 + 1.0 * Math.random()
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})
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})
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createLines(busLines)
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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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function createLines(arr) {
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const arrData = []
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arr.forEach(function (item, index) {
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arrData.push({
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positions: item.positions,
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style: {
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width: 2.0,
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material: mars3d.MaterialUtil.createMaterial(mars3d.MaterialType.ODLine, {
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color: item.color,
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speed: item.speed,
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startTime: Math.random()
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})
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},
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attr: { index: index }
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})
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})
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// 多个线对象的合并渲染。
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const primitive = new mars3d.graphic.PolylineCombine({
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instances: arrData
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})
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graphicLayer.addGraphic(primitive)
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}
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