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