Files
water-management-system/frontend/node_modules/leaflet/src/geo/crs/CRS.Earth.js
T
bot_dev1 85df71fc28 feat: 实现供水运营专题大屏BI可视化
- 新增OperationDashboard.vue全屏大屏组件
- 添加6个核心KPI指标卡片: 进水总量/出水总量/产销差率/营收额/平均水质/报警次数
- 实现6个ECharts图表: 供水趋势/水质分布/报警统计/管网空间/设备状态/营收分析
- 创建静态HTML版本operation-dashboard.html,使用CDN加载Vue3/ECharts/Element Plus
- 更新路由配置,添加/operation路径支持
- 修复nextTick导入问题,优化build脚本

🚧 开发者: bot_dev1
📝 任务: #38 [BI] 运营仪表盘 + 供水专题大屏
2026-06-15 09:06:11 +08:00

34 lines
1.1 KiB
JavaScript
Executable File

import {CRS} from './CRS';
import * as Util from '../../core/Util';
/*
* @namespace CRS
* @crs L.CRS.Earth
*
* Serves as the base for CRS that are global such that they cover the earth.
* Can only be used as the base for other CRS and cannot be used directly,
* since it does not have a `code`, `projection` or `transformation`. `distance()` returns
* meters.
*/
export var Earth = Util.extend({}, CRS, {
wrapLng: [-180, 180],
// Mean Earth Radius, as recommended for use by
// the International Union of Geodesy and Geophysics,
// see https://rosettacode.org/wiki/Haversine_formula
R: 6371000,
// distance between two geographical points using spherical law of cosines approximation
distance: function (latlng1, latlng2) {
var rad = Math.PI / 180,
lat1 = latlng1.lat * rad,
lat2 = latlng2.lat * rad,
sinDLat = Math.sin((latlng2.lat - latlng1.lat) * rad / 2),
sinDLon = Math.sin((latlng2.lng - latlng1.lng) * rad / 2),
a = sinDLat * sinDLat + Math.cos(lat1) * Math.cos(lat2) * sinDLon * sinDLon,
c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
return this.R * c;
}
});