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: 29.851048, lng: 117.477098, alt: 1294279, heading: 358, pitch: -87 }
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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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// 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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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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// 加载气象
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mars3d.Util.fetchJson({ url: "//data.mars3d.cn/file/apidemo/windpoint.json" })
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.then(function (res) {
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showWindLine(res.data)
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})
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.catch(function () {
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globalMsg("实时查询气象信息失败，请稍候再试")
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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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// 流场线
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function showWindLine(arr) {
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const arrData = []
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const radius = 12000
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const lineMaterial = mars3d.MaterialUtil.createMaterial(mars3d.MaterialType.LineFlow, {
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image: "img/textures/line-arrow-right.png",
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color: "#00ff00",
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speed: 30
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})
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for (let i = 0, len = arr.length; i < len; i++) {
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const item = arr[i]
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const position = Cesium.Cartesian3.fromDegrees(item.x, item.y, 0)
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const angle = 180 - item.dir
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let pt1 = mars3d.PointUtil.getPositionByDirectionAndLen(position, angle, radius)
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pt1 = mars3d.PointUtil.setPositionsHeight(pt1, 0)
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arrData.push({
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positions: [position, pt1],
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style: {
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width: 8,
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material: lineMaterial // 动画线材质
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},
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attr: item
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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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// 按单个线渲染，效率差些
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/* function showWindLine(arr) {
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// 创建Graphic图层
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let graphicLayer = new mars3d.layer.GraphicLayer()
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map.addLayer(graphicLayer)
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let lineMaterial = mars3d.MaterialUtil.createMaterial(mars3d.MaterialType.LineFlow, {
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image: "img/textures/line-arrow-right.png",
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color: "#00ff00",
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speed: 30
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})
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let radius = 12000
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for (let i = 0, len = arr.length; i < len; i++) {
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const item = arr[i]
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let position = Cesium.Cartesian3.fromDegrees(item.x, item.y, 0)
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let angle = 180 - item.dir
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let pt1 = mars3d.PointUtil.getPositionByDirectionAndLen(position, angle, radius)
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pt1 = mars3d.PointUtil.setPositionsHeight(pt1, 0)
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let primitive = new mars3d.graphic.PolylinePrimitive({
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positions: [position, pt1],
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style: {
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width: 8,
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material: lineMaterial // 动画线材质
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}
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})
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primitive.bindPopup(`${angle}`)
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graphicLayer.addGraphic(primitive)
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}
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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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