<template>
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<HomeLeft></HomeLeft>
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<!-- <div>中间搜索</div> -->
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<HomeRight></HomeRight>
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<SearchBox />
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</template>
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<script setup>
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import HomeRight from './components/HomeRight/HomeRight.vue';
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import HomeLeft from '@/views/Home/components/HomeLeft/HomeLeft.vue';
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import SearchBox from '@/views/Home/SearchBox.vue';
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import jiangxi from '@/assets/geojson/jiangxi.json';
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import jiangxishi from '@/assets/geojson/jiangxishi.json';
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import zg from '@/assets/geojson/zg.json';
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import * as Cesium from 'cesium';
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import data1 from '@/assets/images/home/homeRight/data1.png';
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import data2 from '@/assets/images/home/homeRight/data2.png';
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const list = [
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{ name: '县', value: [0,48651], gJson: null },
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{ name: '市', value: [48651,314863], gJson: jiangxishi },
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{ name: '省', value: [314863,1169651], gJson: jiangxi },
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{ name: '国', value: [1169651,37962800], gJson: zg },
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];
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let viewer = null;
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const active = ref('');
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const init = () => {
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determineScaling();
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viewer.camera.moveEnd.addEventListener(() => {
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determineScaling();
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});
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};
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const determineScaling = () => {
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let height = viewer.camera.positionCartographic.height;
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// 根据高度展示对应的 gJson
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for (let item of list) {
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// if (height < item.value) {
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if (height > item.value[0] && height <= item.value[1]) {
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if (active.value !== item.name) {
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viewer.dataSources.removeAll(true);
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viewer.entities.removeAll();
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active.value = item.name;
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if (item.gJson) {
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aggregation(item);
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}else{
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for (let i = 0; i < 50; i++) {
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viewer.entities.add({
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position: Cesium.Cartesian3.fromDegrees(
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115.89 + Math.random() * 0.2,
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28.68 + Math.random() * 0.2
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),
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label: {
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// 随机整数
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text: Math.floor(Math.random() * 100)+'号机巢',
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font: '14pt monospace',
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fillColor: Cesium.Color.WHITE,
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outlineColor: Cesium.Color.BLACK,
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outlineWidth: 2,
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style: Cesium.LabelStyle.FILL_AND_OUTLINE,
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verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
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pixelOffset: new Cesium.Cartesian2(0, -9),
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},
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billboard: {
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image: data1,
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width: 24,
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height: 24,
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},
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});
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}
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}
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}
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break;
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}
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}
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};
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const aggregation = item => {
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const featuresList = item.gJson.features.map(item => ({
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name: item.properties.name,
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position: item.properties.center,
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}));
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// 遍历特征并添加实体
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featuresList.forEach(feature => {
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if (!feature.position) return;
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const position = Cesium.Cartesian3.fromDegrees(feature.position[0], feature.position[1]);
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viewer.entities.add({
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position: position,
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label: {
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// 随机整数
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text: feature.name + Math.floor(Math.random() * 100),
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font: '14pt monospace',
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fillColor: Cesium.Color.WHITE,
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outlineColor: Cesium.Color.BLACK,
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outlineWidth: 2,
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style: Cesium.LabelStyle.FILL_AND_OUTLINE,
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verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
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pixelOffset: new Cesium.Cartesian2(0, -9),
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},
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billboard: {
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image: data2,
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width: 24,
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height: 24,
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},
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});
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});
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// 加载新的 GeoJSON 数据
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Cesium.GeoJsonDataSource.load(item.gJson).then(dataSource => {
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viewer.dataSources.add(dataSource);
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item.dataSource = dataSource; // 保存数据源以便后续删除
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// 获取数据源中的实体
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const entities = dataSource.entities.values;
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entities.forEach(entity => {
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entity.polygon.material = new Cesium.ColorMaterialProperty(
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Cesium.Color.YELLOW.withAlpha(0) // 透明填充
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);
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entity.polygon.outline = new Cesium.ConstantProperty(true); // 显示边框
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entity.polygon.outlineColor = new Cesium.ConstantProperty(Cesium.Color.YELLOW); // 黑色边框
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});
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});
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};
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onMounted(() => {
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nextTick(() => {
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viewer = window.$viewer;
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init();
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});
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});
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</script>
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