{"version":3,"file":"TerminatorSymbol.mjs","sources":["../../../../../../../packages/sdk/plugins/AreaView/layer/TerminatorSymbol.ts"],"sourcesContent":["import L from 'leaflet'\nimport dayjs from 'dayjs'\nimport type { MyMap } from '@map-sdk/sdk/ShipxyAPISDK'\n\n// 常量定义\nconst TERMINATOR_UPDATE_INTERVAL = 300000 // 5分钟 (毫秒)\nconst LONGITUDE_STEP = 1 // 经度步长\nconst DAYS_IN_YEAR = 365\nconst EARTH_TILT = 23.44\nconst HOURS_IN_DAY = 24\nconst DEG_TO_RAD = Math.PI / 180\nconst RAD_TO_DEG = 180 / Math.PI\nconst TIME_BUTTONS = [-18, -12, -6, -1, 0, +1, +6, +12, +18]\nconst DAYS_OF_WEEK = ['日', '一', '二', '三', '四', '五', '六']\n\n// 太阳位置接口\ninterface SunPosition {\n altitude: number\n azimuth: number\n latitude: number\n longitude: number\n}\n\nclass Terminator {\n private hourOffset = 0\n private updateIntervalId: number | null = null\n private clockTimerId: number | null = null\n private isInitialized = false\n private layerGroup: L.LayerGroup | null = null\n private readonly map: MyMap\n\n constructor(map: MyMap) {\n this.map = map\n }\n\n /**\n * 计算太阳赤纬（太阳直射点的纬度）\n * @param dayOfYear 一年中的第几天 (0-364)\n * @returns 太阳赤纬（角度）\n */\n private calculateSolarDeclination(dayOfYear: number): number {\n return (\n EARTH_TILT *\n Math.sin((360 / DAYS_IN_YEAR) * (dayOfYear - 81) * DEG_TO_RAD)\n )\n }\n\n /**\n * 计算太阳时角\n * @param date UTC日期对象\n * @returns 太阳时角（角度）\n */\n private calculateSolarHourAngle(date: Date): number {\n const utcHours =\n date.getUTCHours() +\n date.getUTCMinutes() / 60 +\n date.getUTCSeconds() / 3600\n return (utcHours - 12) * 15\n }\n\n /**\n * 计算晨昏线纬度\n * @param longitude 经度\n * @param solarDeclination 太阳赤纬\n * @param solarHourAngle 太阳时角\n * @returns 晨昏线纬度\n */\n private calculateTerminatorLatitude(\n longitude: number,\n solarDeclination: number,\n solarHourAngle: number\n ): number {\n const terminatorLat =\n Math.atan(\n -Math.cos((longitude + solarHourAngle) * DEG_TO_RAD) /\n Math.tan(solarDeclination * DEG_TO_RAD)\n ) * RAD_TO_DEG\n\n return terminatorLat\n }\n\n /**\n * 清除所有图层和定时器\n */\n private clearResources(): void {\n try {\n this.isInitialized = false\n\n // 清除图层\n if (this.layerGroup) {\n this.layerGroup.clearLayers()\n this.map.removeLayer(this.layerGroup)\n this.layerGroup = null\n }\n\n // 清除定时器\n if (this.updateIntervalId) {\n clearInterval(this.updateIntervalId)\n this.updateIntervalId = null\n }\n\n if (this.clockTimerId) {\n clearInterval(this.clockTimerId)\n this.clockTimerId = null\n }\n\n this.hourOffset = 0\n } catch (error) {\n console.error('清除资源时出错:', error)\n }\n }\n\n /**\n * 初始化UI组件\n */\n private initializeUI(): void {\n if (this.isInitialized) return\n\n try {\n // 创建图层组\n this.layerGroup = L.layerGroup().addTo(this.map)\n\n // 生成时间按钮HTML\n const hourButtons = TIME_BUTTONS.map((hour) => {\n const formattedHour = hour > 0 ? `+${hour}` : hour.toString()\n return hour === 0\n ? `现在（北京时间）`\n : `${formattedHour}小时`\n }).join('')\n\n const html = `\n \n
\n
\n
${hourButtons}
\n
\n
\n