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 kgUtil = window.kgUtil
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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: 31.516143, lng: 117.282937, alt: 46242, heading: 2, pitch: -49 }
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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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// 创建矢量数据图层
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graphicLayer = new mars3d.layer.GraphicLayer({
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hasEdit: true,
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isAutoEditing: true // 绘制完成后是否自动激活编辑
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})
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map.addLayer(graphicLayer)
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bindLayerEvent() // 对图层绑定相关事件
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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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}
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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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// 绘制
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export function drawPolygon(type) {
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graphicLayer.startDraw({
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type: type,
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edittype: "polygon",
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style: {
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color: "#ff0000",
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opacity: 0.6,
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outline: true,
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outlineWidth: 3,
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outlineColor: "#ffffff",
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clampToGround: true
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}
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})
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}
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// 绘制(带高度)
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export function drawExtrudedPolygon(type) {
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graphicLayer.startDraw({
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type: type,
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edittype: "polygon",
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style: {
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color: "#ffd500",
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opacity: 0.4,
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diffHeight: 300
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}
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})
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}
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// 在图层级处理一些事物
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function bindLayerEvent() {
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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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/* graphicLayer.on(mars3d.EventType.mouseOver, function (event) {
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console.log("监听layer，鼠标移入了矢量对象", event)
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})
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graphicLayer.on(mars3d.EventType.mouseOut, function (event) {
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console.log("监听layer，鼠标移出了矢量对象", event)
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}) */
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// 数据编辑相关事件，用于属性弹窗的交互
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graphicLayer.on(mars3d.EventType.drawCreated, function (e) {
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if (graphicLayer.hasEdit) {
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eventTarget.fire("graphicEditor-start", e)
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}
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})
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graphicLayer.on(
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[mars3d.EventType.editStart, mars3d.EventType.editMovePoint, mars3d.EventType.editStyle, mars3d.EventType.editRemovePoint],
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function (e) {
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eventTarget.fire("graphicEditor-update", e)
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}
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)
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graphicLayer.on([mars3d.EventType.editStop, mars3d.EventType.removeGraphic], function (e) {
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eventTarget.fire("graphicEditor-stop", e)
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})
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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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text: "计算周长",
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icon: "fa fa-medium",
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callback: function (e) {
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const graphic = e.graphic
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const strDis = mars3d.MeasureUtil.formatDistance(graphic.distance)
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globalAlert("该对象的周长为:" + strDis)
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}
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},
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{
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text: "计算面积",
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icon: "fa fa-reorder",
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callback: function (e) {
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const graphic = e.graphic
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const strArea = mars3d.MeasureUtil.formatArea(graphic.area)
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globalAlert("该对象的面积为:" + strArea)
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}
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}
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])
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}
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export function updateLayerHasEdit(val) {
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graphicLayer.hasEdit = val
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}
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// 保存GeoJSON
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export function downloadJsonFile() {
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const geojson = graphicLayer.toGeoJSON()
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mars3d.Util.downloadFile("我的标注.json", JSON.stringify(geojson))
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}
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/**
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* 打开geojson文件
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*
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* @export
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* @param {FileInfo} file 文件
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* @returns {void} 无
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*/
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export function openGeoJSON(file) {
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const fileName = file.name
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const fileType = fileName?.substring(fileName.lastIndexOf(".") + 1, fileName.length).toLowerCase()
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if (fileType === "json" || fileType === "geojson") {
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const reader = new FileReader()
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reader.readAsText(file, "UTF-8")
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reader.onloadend = function (e) {
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let geojson = this.result
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geojson = simplifyGeoJSON(geojson) // 简化geojson的点
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graphicLayer.loadGeoJSON(geojson, {
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flyTo: true
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})
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}
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} else if (fileType === "kml") {
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const reader = new FileReader()
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reader.readAsText(file, "UTF-8")
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reader.onloadend = function (e) {
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const strkml = this.result
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kgUtil.toGeoJSON(strkml).then((geojson) => {
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geojson = simplifyGeoJSON(geojson) // 简化geojson的点
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console.log("kml2geojson", geojson)
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graphicLayer.loadGeoJSON(geojson, {
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flyTo: true
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})
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})
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}
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} else if (fileType === "kmz") {
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// 加载input文件控件的二进制流
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kgUtil.toGeoJSON(file).then((geojson) => {
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geojson = simplifyGeoJSON(geojson) // 简化geojson的点
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console.log("kmz2geojson", geojson)
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graphicLayer.loadGeoJSON(geojson, {
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flyTo: true
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})
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})
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} else {
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globalMsg("暂不支持 " + fileType + " 文件类型的数据！")
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}
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}
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// 简化geojson的坐标
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function simplifyGeoJSON(geojson) {
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try {
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geojson = turf.simplify(geojson, { tolerance: 0.000001, highQuality: true, mutate: true })
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} catch (e) {
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console.log("加载出错", e)
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}
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return geojson
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}
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