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| import * as mars3d from "mars3d"
|
| export let map // mars3d.Map三维地图对象
|
| // 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）
| export const mapOptions = {
| scene: {
| center: { lat: 27.689337, lng: 118.112448, alt: 762174, heading: 358, pitch: -62 }
| }
| }
|
| /**
| * 初始化地图业务，生命周期钩子函数（必须）
| * 框架在地图初始化完成后自动调用该函数
| * @param {mars3d.Map} mapInstance 地图对象
| * @returns {void} 无
| */
| export function onMounted(mapInstance) {
| map = mapInstance // 记录首次创建的map
| mars3d.Util.fetchJson({ url: "//data.mars3d.cn/file/geojson/areas/340000_full.json" })
| .then(function (geojson) {
| showBJXLine(geojson.features[0])
| })
| .catch(function () {
| globalAlert("Json文件加载失败！")
| })
|
| mars3d.Util.fetchJson({ url: "//data.mars3d.cn/file/geojson/areas/340000_full.json" })
| .then(function (geojson) {
| showGeoJsonVectorTile(geojson)
| })
| .catch(function () {
| globalAlert("Json文件加载失败！")
| })
| }
|
| /**
| * 释放当前地图业务的生命周期函数
| * @returns {void} 无
| */
| export function onUnmounted() {
| map = null
| }
|
| /**
| * API文档，参考lib\mars3d\thirdParty\weiVectorTile\Document.rar（解压Document.rar）
| *
| * @param {Array} geojson 获取得到的数据 数组对象
| * @returns {void} 无
| */
| function showGeoJsonVectorTile(geojson) {
| const tileLayer = new mars3d.layer.WeiVectorTileLayer({
| source: geojson,
| zIndex: 2,
| removeDuplicate: false,
| allowPick: true, // 允许单击
| defaultStyle: {
| // 参考api文档的Cesium.VectorStyle类
| tileCacheSize: 200,
|
| fill: true, // 是否填充，仅面数据有效。
| fillColor: "rgba(0,255,255,0.1)",
|
| outline: true, // 是否显示边，仅面数据有效。
| outlineColor: "rgba(138,138,138,1)",
| lineWidth: 2,
|
| showMaker: false,
|
| showCenterLabel: true, // 是否显示文本，仅对线和面数据有效
| centerLabelPropertyName: "name",
| fontColor: "rgba(255,255,255,1)",
| fontSize: 23,
| fontFamily: "楷体",
| labelOffsetX: -10,
| labelOffsetY: -5
| },
| minimumLevel: 1,
| maximumLevel: 20,
| simplify: false,
| styleFilter: function (feature, style, x, y, level) {
| if (level < 6) {
| style.fontSize = level * 2
| } else {
| style.fontSize = 23
| }
|
| if (feature.properties && feature.properties.name && feature.properties.name === "合肥市") {
| style.fillColor = Cesium.Color.YELLOW.withAlpha(0.2)
| }
| return style
| },
| // 以下为mars3d参数,API参考http://mars3d.cn/api/BaseTileLayer.html#.ConstructorOptions
| maxLength: -1,
| popup: "all"
| })
| map.addLayer(tileLayer)
|
| tileLayer.on(mars3d.EventType.click, function (event) {
| console.log("单击了图层", event)
| })
| }
|
| function showBJXLine(feature) {
| // 缓冲区
| let bufferedOuter = turf.buffer(feature, 2000, {
| units: "meters"
| })
| let bufferedInner = turf.buffer(feature, 1000, {
| units: "meters"
| })
|
| bufferedInner = turf.difference(bufferedInner, feature)
|
| bufferedOuter = turf.difference(bufferedOuter, bufferedInner)
|
| bufferedInner = turf.featureCollection([bufferedInner])
| bufferedOuter = turf.featureCollection([bufferedOuter])
|
| const tileLayer = new mars3d.layer.WeiVectorTileLayer({
| source: bufferedOuter,
| zIndex: 99,
| removeDuplicate: false,
| defaultStyle: {
| outlineColor: "rgba(209,204,226,1)",
| lineWidth: 2,
| outline: true,
| fill: true,
| fillColor: "rgba(209,204,226,1)",
| tileCacheSize: 200,
| showMaker: false,
| showCenterLabel: false
| },
| maximumLevel: 20,
| minimumLevel: 5,
| simplify: false
| })
| map.addLayer(tileLayer)
|
| const tileLayer2 = new mars3d.layer.WeiVectorTileLayer({
| source: bufferedInner,
| zIndex: 99,
| removeDuplicate: false,
| defaultStyle: {
| outlineColor: "rgba(185,169,199,1)",
| lineWidth: 2,
| outline: true,
| fill: true,
| fillColor: "rgba(185,169,199,1)",
| tileCacheSize: 200,
| showMaker: false,
| showCenterLabel: false
| },
| maximumLevel: 20,
| minimumLevel: 5,
| simplify: false
| })
| map.addLayer(tileLayer2)
| }
|
|
