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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export const mapOptions = {
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scene: {
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center: { lat: 31.255881, lng: 117.271026, alt: 60133, heading: 0, pitch: -46 }
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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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randomPoints()
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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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// 颜色
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let index = 0
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const colors = ["#99CCCC", "#66FF66", "#FF6666", "#00CCFF", "#00FF33", "#CC0000", "#CC00CC", "#CCFF00", "#0000FF"]
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function getColor() {
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const i = index++ % colors.length
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return colors[i]
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}
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const bbox = [116.984788, 31.625909, 117.484068, 32.021504]
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export function randomPoints() {
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graphicLayer.clear()
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const points = turf.randomPoint(100, { bbox: bbox })
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points.features.forEach((e, index) => {
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const position = e.geometry.coordinates
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const primitive = new mars3d.graphic.BillboardPrimitive({
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position: position,
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style: {
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image: "img/marker/mark3.png",
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scale: 1,
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horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
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verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
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scaleByDistance: new Cesium.NearFarScalar(10000, 1.0, 500000, 0.1)
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},
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popup: "第" + index + "个"
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})
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graphicLayer.addGraphic(primitive)
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})
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}
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export function randomPolylines() {
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graphicLayer.clear()
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let numVertices = parseInt(Math.random() * 10)
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numVertices = numVertices < 3 ? 3 : numVertices
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const polylines = turf.randomLineString(100, {
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bbox: bbox,
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num_vertices: numVertices, // 每个 LineString 将包含多少个坐标。
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max_length: 0.01 // 大小
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})
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polylines.features.forEach((e, index) => {
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const positions = e.geometry.coordinates
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const primitive = new mars3d.graphic.PolylinePrimitive({
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positions: positions,
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style: {
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width: 4,
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color: getColor(),
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opacity: 0.8,
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clampToGround: true
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},
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popup: "第" + index + "个"
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})
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graphicLayer.addGraphic(primitive)
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})
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}
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export function randomPolygons() {
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graphicLayer.clear()
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let numVertices = parseInt(Math.random() * 10)
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numVertices = numVertices < 3 ? 3 : numVertices
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const polygons = turf.randomPolygon(100, {
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bbox: bbox,
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num_vertices: numVertices, // 坐标个数,必须多于或等于四个
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max_radial_length: 0.01 // 大小
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})
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polygons.features.forEach((e, index) => {
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const positions = e.geometry.coordinates
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const primitive = new mars3d.graphic.PolygonPrimitive({
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positions: positions,
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style: {
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color: getColor(),
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opacity: 0.6,
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clampToGround: true
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},
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popup: "第" + index + "个"
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})
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graphicLayer.addGraphic(primitive)
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})
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}
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export function clearAll() {
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graphicLayer.clear()
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}
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