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 linePositions
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let graphicPath
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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: 20.803452, lng: 116.629014, alt: 1734203, heading: 3, pitch: -57 }
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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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addDemoGraphics()
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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 addDemoGraphics() {
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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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// 半球
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const graphicQiu = new mars3d.graphic.EllipsoidEntity({
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position: new mars3d.LngLatPoint(117.276726, 31.864175, -10000.0),
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style: {
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radii: new Cesium.Cartesian3(200000.0, 200000.0, 200000.0),
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maximumConeDegree: 90,
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material: mars3d.MaterialUtil.createMaterialProperty(mars3d.MaterialType.EllipsoidWave, {
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color: "#ff0000",
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speed: 5.0
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}),
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outline: false
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}
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})
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graphicLayer.addGraphic(graphicQiu)
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// 计算圆圈线
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linePositions = mars3d.PolyUtil.getEllipseOuterPositions({
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position: Cesium.Cartesian3.fromDegrees(117.276726, 31.864175),
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radius: 500000,
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count: 60 // 共返回count*4个点
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})
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linePositions = mars3d.PointUtil.setPositionsHeight(linePositions, 20000)
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linePositions.push(linePositions[0]) // 闭合圆
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// 圆圈线
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// let graphicLine = new mars3d.graphic.PolylineEntity({
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// positions: linePositions,
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// style: {
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// width: 8,
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// material: mars3d.MaterialUtil.createMaterialProperty(mars3d.MaterialType.PolylineGlow, {
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// glowPower: 0.2,
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// color: Cesium.Color.GREEN,
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// }),
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// },
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// });
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// graphicLayer.addGraphic(graphicLine);
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// 飞机path路径
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const property = new Cesium.SampledPositionProperty()
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property.forwardExtrapolationType = Cesium.ExtrapolationType.HOLD
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const start = map.clock.currentTime
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let alltimes = 0
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for (let i = 0, len = linePositions.length; i < len; i++) {
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alltimes += 1
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const time = Cesium.JulianDate.addSeconds(start, alltimes, new Cesium.JulianDate())
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property.addSample(time, linePositions[i])
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}
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const stop = Cesium.JulianDate.addSeconds(start, alltimes, new Cesium.JulianDate())
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// This is where it becomes a smooth path.
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property.setInterpolationOptions({
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interpolationDegree: 5,
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interpolationAlgorithm: Cesium.LagrangePolynomialApproximation
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})
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graphicPath = new mars3d.graphic.PathEntity({
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position: property,
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orientation: new Cesium.VelocityOrientationProperty(property),
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style: {
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width: 2,
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color: "#ffff00",
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opacity: 0.9
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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/zhanji.glb",
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scale: 0.1,
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minimumPixelSize: 90
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}
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})
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graphicLayer.addGraphic(graphicPath)
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// Make sure viewer is at the desired time.
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map.clock.startTime = start.clone()
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map.clock.stopTime = stop.clone()
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map.clock.currentTime = start.clone()
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map.clock.clockRange = Cesium.ClockRange.LOOP_STOP // 到达终止时间后循环
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map.clock.multiplier = 1
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map.clock.shouldAnimate = true
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}
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// 顶视图
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export function viewSeeTop() {
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map.trackedEntity = undefined
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map.flyToPositions(linePositions, { pitch: -90 })
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}
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// 侧视图
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export function viewSeeCe() {
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map.trackedEntity = graphicPath
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graphicPath.flyToPoint({
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radius: 5000,
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heading: 0,
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duration: 0
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})
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}
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// 主视图
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export function viewSeeHome() {
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map.trackedEntity = graphicPath
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graphicPath.flyToPoint({
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radius: 5000,
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heading: 90,
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duration: 0
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})
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}
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