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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let road
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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: 31.808563, lng: 117.187762, alt: 234, heading: 95, pitch: -15 }
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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Graphic图层
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graphicLayer = new mars3d.layer.GraphicLayer()
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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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bindLayerPopup() // 在图层上绑定popup,对所有加到这个图层的矢量数据都生效
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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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// 加一些演示数据
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addDemoGraphic1(graphicLayer)
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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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graphicLayer.remove()
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graphicLayer = null
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}
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function addDemoGraphic1(graphicLayer) {
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road = new mars3d.graphic.Road({
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positions: [
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[117.181132, 31.814245, 45.95],
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[117.185542, 31.8125, 43.23],
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[117.190607, 31.810037, 38.95],
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[117.195048, 31.807351, 39.03],
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[117.198338, 31.804961, 39.86],
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[117.201378, 31.802543, 33.1],
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[117.204316, 31.80064, 34.33],
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[117.209094, 31.798011, 33.56],
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[117.212615, 31.796325, 33.75],
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[117.216706, 31.794731, 39.96]
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],
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style: {
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image: "./img/textures/road.jpg",
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width: 15,
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height: 1
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}
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})
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graphicLayer.addGraphic(road)
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}
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// 绘制道路
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export function drawLine(width, height, opacity) {
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map.graphicLayer.startDraw({
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type: "polyline",
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style: {
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color: "#55ff33",
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width: 3
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},
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success: (graphic) => {
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const points = graphic.points
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graphic.remove() // 删除绘制的线
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road = new mars3d.graphic.Road({
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positions: points,
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style: {
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image: "./img/textures/road.jpg",
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width: width,
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height: height,
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opacity: opacity
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}
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})
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graphicLayer.addGraphic(road)
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}
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})
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}
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// 宽度发生改变
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export function widthChange(value) {
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if (!road) {
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return
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}
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road.width = value
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}
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// 路高度发生改变
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export function heightChange(value) {
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if (!road) {
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return
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}
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road.height = value
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}
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// 透明度发生改变
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export function alphaChange(value) {
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if (!road) {
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return
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}
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road.opacity = value
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}
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// 清除
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export function clearLayer() {
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graphicLayer.clear()
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road = null
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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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// 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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}
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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: "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: "计算长度",
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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("该对象的长度为:" + strDis)
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}
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}
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])
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}
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