Files
astro/tools/format.go
T
b612 2bf8478639 feat: 完善日月食与月掩几何链路并扩展历法接口
- 新增日月食中心带、偏食带、阴影足迹、等时线、食分线及升落边界计算,支持极区与混合食拓扑
- 新增日食单时刻阴影求解器、站心状态查询、批量采样和 ΔT 覆盖接口
- 重构恒星与行星月掩路径,补充有限盘面接触、站心修正、掩带宽度、极区投影及升落边界
- 扩展 SVG 与 GeoJSON 输出,支持详细面板、全球/极区/地球投影、边界闭合、时间标记和拓扑签名
- 扩展日月食候选搜索、局地搜索、沙罗序列预计算与范围外推,补充系列锚点和成员一致性校验
- 补齐古历纪年、儒略历独有闰日、多公历候选、历法改革跨日及精确日期运算接口
- 优化 ΔT、章动、恒星时、月球地平线、事件根搜索和本地星历缓存,降低重复计算开销并提升边界稳定
2026-09-17 12:27:40 +08:00

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package tools
import (
"fmt"
"math"
)
// Format 把角度格式化为度分秒;typed 为 0 时输出度分秒,非 0 时输出时分秒 / format an angle as degrees-minutes-seconds, or hours-minutes-seconds when typed is non-zero.
func Format(val float64, typed uint8) string {
belowZero := false
if val < 0 {
belowZero = true
val = -val
}
degree := math.Floor(val)
min := math.Floor((val - degree) * 60)
sec := (val - degree - min/60) * 3600
if belowZero {
degree = -degree
}
if typed == 0 {
return fmt.Sprintf("%.0f°%.0f′%.2f″", degree, min, sec)
}
return fmt.Sprintf("%.0fh%.0fm%.2fs", degree, min, sec)
}