import * as mars3d from "mars3d"
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export let map // mars3d.Map三维地图对象
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let sightline
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let positionSXT
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let positionDM
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let positionJD // 与地面的交点
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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: 30.841574, lng: 116.18792, alt: 6828, heading: 215, pitch: -28 }
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}
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}
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export const eventTarget = new mars3d.BaseClass() // 事件对象，用于抛出事件到面板中
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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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creatTestData()
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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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// 创建测试数据
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function creatTestData() {
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sightline = new mars3d.thing.Sightline()
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map.addThing(sightline)
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sightline.on(mars3d.EventType.end, function (e) {
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positionJD = e.position
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})
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// 测试数据
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positionSXT = Cesium.Cartesian3.fromDegrees(116.144485, 30.744249, 1060)
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const graphicSXT = new mars3d.graphic.PointEntity({
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position: positionSXT,
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style: {
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color: "#ffff00",
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pixelSize: 8,
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label: {
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text: "摄像头",
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font_size: 20,
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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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}
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}
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})
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map.graphicLayer.addGraphic(graphicSXT)
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// 创建矢量数据图层
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const graphicLayer = new mars3d.layer.GraphicLayer()
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map.addLayer(graphicLayer)
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// 地面点
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const TargetGraphic = new mars3d.graphic.PointEntity({
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position: new Cesium.CallbackProperty(() => {
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return positionDM
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}, false),
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style: {
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color: "#0000ff",
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pixelSize: 7,
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outlineColor: "#ffffff",
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outlineWidth: 2,
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label: {
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text: "目标参考点",
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font_size: 18,
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color: "#ffffff",
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pixelOffsetY: -10,
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distanceDisplayCondition: true,
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distanceDisplayCondition_far: 500000,
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distanceDisplayCondition_near: 0
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}
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}
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})
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graphicLayer.addGraphic(TargetGraphic)
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const graphicJD = new mars3d.graphic.PointEntity({
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position: new Cesium.CallbackProperty(function (time) {
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return positionJD
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}, false),
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style: {
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color: "#00ff00",
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pixelSize: 8,
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outlineColor: "#ffffff",
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outlineWidth: 2
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}
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})
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graphicJD.bindTooltip("与地形地面的交点")
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graphicLayer.addGraphic(graphicJD)
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// 摄像头朝向的地面点连线
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const graphicLine = new mars3d.graphic.PolylineEntity({
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positions: new Cesium.CallbackProperty(function (time) {
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if (!positionSXT || !positionDM || positionJD != null) {
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return []
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}
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return [positionSXT, positionDM]
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}, false),
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style: {
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width: 2,
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arcType: Cesium.ArcType.NONE,
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color: "#ffff00"
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}
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})
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graphicLayer.addGraphic(graphicLine)
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map.on(mars3d.EventType.load, function (event) {
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analysisIntersection()
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})
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}
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// 计算与地面焦点
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export function analysisIntersection() {
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if (!positionSXT || !positionDM) {
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return []
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}
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sightline.clear()
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sightline.addAsync(positionSXT, positionDM)
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}
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// 设置摄像头位置
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export function sePoint() {
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map.graphicLayer.clear()
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map.graphicLayer.startDraw({
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type: "point",
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style: {
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pixelSize: 8,
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color: "#ffff00",
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label: {
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text: "摄像头",
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font_size: 20,
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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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}
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},
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success: function (graphic) {
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positionSXT = graphic.positionShow
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positionSXT = mars3d.PointUtil.addPositionsHeight(positionSXT, 5.0) // 增加杆子高度
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}
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})
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}
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export function testTerrain(val) {
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map.scene.globe.depthTestAgainstTerrain = val
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if (val) {
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globalMsg("深度监测打开后，您将无法看到地下或被地形遮挡的对象")
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}
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}
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// 更新模型数据
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export function updateModel(params) {
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if (!positionSXT) {
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return
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}
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const hpr = new Cesium.HeadingPitchRoll(
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Cesium.Math.toRadians(params.heading),
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Cesium.Math.toRadians(params.pitch),
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Cesium.Math.toRadians(params.roll)
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)
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positionDM = mars3d.PointUtil.getRayEarthPosition(positionSXT, hpr, true, map.scene.globe.ellipsoid)
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if (!positionDM) {
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// 与地面无交点时
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positionDM = mars3d.PointUtil.getPositionByHprAndLen(positionSXT, hpr, 5000)
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}
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sightline.clear()
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positionJD = null
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}
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