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: 31.756263, lng: 117.209077, alt: 7696, heading: 5, 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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// 创建矢量数据图层
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graphicLayer = new mars3d.layer.GraphicLayer()
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map.addLayer(graphicLayer)
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bindLayerEvent() // 对图层绑定相关事件
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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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bindLayerContextMenu() // 在图层绑定右键菜单,对所有加到这个图层的矢量数据都生效
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// 加一些演示数据
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addDemoGraphic1(graphicLayer)
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addDemoGraphic2(graphicLayer)
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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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graphicLayer.remove()
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graphicLayer = null
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}
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function addDemoGraphic1(graphicLayer) {
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const property = new Cesium.SampledPositionProperty()
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property.forwardExtrapolationType = Cesium.ExtrapolationType.HOLD
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let tempTime
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// 起点
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tempTime = map.clock.currentTime // 飞行开始时间
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property.addSample(tempTime, Cesium.Cartesian3.fromDegrees(117.172852, 31.862736, 50))
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// 移动到的第1个目标点
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tempTime = Cesium.JulianDate.addSeconds(tempTime, 120, new Cesium.JulianDate())
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property.addSample(tempTime, Cesium.Cartesian3.fromDegrees(117.251461, 31.856011, 50))
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// 移动到的第2个目标点
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tempTime = Cesium.JulianDate.addSeconds(tempTime, 120, new Cesium.JulianDate())
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property.addSample(tempTime, Cesium.Cartesian3.fromDegrees(117.265321, 31.876336, 50))
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tempTime = Cesium.JulianDate.addSeconds(tempTime, 600, new Cesium.JulianDate())
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property.addSample(tempTime, Cesium.Cartesian3.fromDegrees(117.160215, 31.890639, 50))
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const graphic = new mars3d.graphic.PathEntity({
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position: property,
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style: {
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width: 2,
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color: "#ffff00",
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opacity: 1.0,
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// 高亮时的样式（默认为鼠标移入，也可以指定type:'click'单击高亮），构造后也可以openHighlight、closeHighlight方法来手动调用
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highlight: {
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type: mars3d.EventType.click,
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color: "#ff0000"
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}
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},
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label: {
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text: "火星1号",
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font_size: 19,
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font_family: "楷体",
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color: Cesium.Color.AZURE,
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outline: true,
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outlineColor: Cesium.Color.BLACK,
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outlineWidth: 2,
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horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
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verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
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pixelOffset: new Cesium.Cartesian2(10, -25) // 偏移量
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},
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model: {
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url: "//data.mars3d.cn/gltf/mars/wrj.glb",
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scale: 0.5,
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minimumPixelSize: 40
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},
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attr: { remark: "示例1" }
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})
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graphicLayer.addGraphic(graphic) // 还可以另外一种写法: graphic.addTo(graphicLayer)
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}
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function addDemoGraphic2(graphicLayer) {
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const graphic = new mars3d.graphic.PathEntity({
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style: {
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width: 2,
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color: "#00ffff",
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opacity: 1.0,
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leadTime: 0, // 前方的路线不显示
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// 高亮时的样式（默认为鼠标移入，也可以指定type:'click'单击高亮），构造后也可以openHighlight、closeHighlight方法来手动调用
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highlight: {
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type: mars3d.EventType.click,
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color: "#ff0000"
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}
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},
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label: {
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text: "火星车",
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font_size: 18,
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font_family: "楷体",
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color: Cesium.Color.AZURE,
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outline: true,
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outlineColor: Cesium.Color.BLACK,
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outlineWidth: 2,
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horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
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verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
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pixelOffset: new Cesium.Cartesian2(10, -25) // 偏移量
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},
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model: {
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url: "//data.mars3d.cn/gltf/mars/qiche.gltf",
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scale: 0.5,
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minimumPixelSize: 30
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},
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attr: { remark: "示例2" }
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})
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graphicLayer.addGraphic(graphic)
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graphic.addDynamicPosition(randomPoint(), 0)
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graphic.addDynamicPosition(randomPoint(), 20)
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// 定时更新动态位置（setInterval为演示）
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setInterval(() => {
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graphic.addDynamicPosition(randomPoint(), 20)
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}, 20000)
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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(117.207666 * 1000, 117.287241 * 1000) / 1000
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const wd = random(31.817099 * 1000, 31.876848 * 1000) / 1000
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return Cesium.Cartesian3.fromDegrees(jd, wd, 30)
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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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// 在图层级处理一些事物
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function bindLayerEvent() {
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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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/* graphicLayer.on(mars3d.EventType.mouseOver, function (event) {
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console.log("监听layer，鼠标移入了矢量对象", event)
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})
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graphicLayer.on(mars3d.EventType.mouseOut, function (event) {
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console.log("监听layer，鼠标移出了矢量对象", event)
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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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// 绑定右键菜单
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export function bindLayerContextMenu() {
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graphicLayer.bindContextMenu([
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{
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text: "删除对象",
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icon: "fa fa-trash-o",
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show: (event) => {
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const graphic = event.graphic
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if (!graphic || graphic.isDestroy) {
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return false
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} else {
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return true
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}
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},
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callback: function (e) {
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const graphic = e.graphic
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if (!graphic) {
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return
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}
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const parent = graphic._parent // 右击是编辑点时
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graphicLayer.removeGraphic(graphic)
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if (parent) {
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graphicLayer.removeGraphic(parent)
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}
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}
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}
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])
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}
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