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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fxaa: true,
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center: { lat: 33.588603, lng: 119.03174, alt: 406, heading: 3, pitch: -44 }
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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.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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const tiles3dLayer = new mars3d.layer.TilesetLayer({
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name: "文庙",
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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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})
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map.addLayer(tiles3dLayer)
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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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// 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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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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const arrModel = []
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// 加一些演示数据
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for (let i = 0; i < 20; i++) {
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const graphic = new mars3d.graphic.ModelEntity({
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style: {
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url: "//data.mars3d.cn/gltf/mars/qiche.gltf",
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scale: 0.1,
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minimumPixelSize: 10,
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label: {
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// 不需要文字时，去掉label配置即可
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text: "皖A000" + i,
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font_size: 16,
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color: "#ffffff",
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outline: true,
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outlineColor: "#000000",
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pixelOffsetY: -20,
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distanceDisplayCondition: true,
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distanceDisplayCondition_far: 50000,
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distanceDisplayCondition_near: 0,
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visibleDepth: false
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}
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},
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clampToTileset: true, // 贴模型，但效率不高，车多就卡
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frameRateHeight: 30 // 控制贴模型的效率，多少帧计算一次
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// objectsToExclude: [] // 排除的不进行贴模型计算的模型对象
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})
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graphicLayer.addGraphic(graphic)
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arrModel.push(graphic.czmObject)
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}
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// 排除的不进行贴模型计算的模型对象
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graphicLayer.eachGraphic((graphic) => {
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graphic.objectsToExclude = arrModel
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})
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// 设置动态位置
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graphicLayer.eachGraphic((graphic) => {
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graphic.addDynamicPosition(randomPoint()) // 首次出现的位置
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})
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graphicLayer.eachGraphic((graphic) => {
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graphic.addDynamicPosition(randomPoint(), 30) // 按30秒运动至指定位置
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})
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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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graphicLayer.eachGraphic((graphic) => {
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graphic.addDynamicPosition(randomPoint(), 30)
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})
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}, 30000)
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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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// 取区域内的随机点
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function randomPoint() {
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const jd = random(119.028631 * 1000, 119.034843 * 1000) / 1000
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const wd = random(33.589624 * 1000, 33.594783 * 1000) / 1000
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return Cesium.Cartesian3.fromDegrees(jd, wd, 0)
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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: "开始编辑对象",
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icon: "fa fa-edit",
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show: function (e) {
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const graphic = e.graphic
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if (!graphic || !graphic.startEditing) {
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return false
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}
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return !graphic.isEditing
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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 false
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}
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if (graphic) {
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graphicLayer.startEditing(graphic)
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}
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}
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},
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{
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text: "停止编辑对象",
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icon: "fa fa-edit",
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show: function (e) {
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const graphic = e.graphic
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if (!graphic) {
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return false
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}
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return graphic.isEditing
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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 false
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}
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if (graphic) {
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graphicLayer.stopEditing(graphic)
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}
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}
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},
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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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