23 lines
790 B
Go
23 lines
790 B
Go
|
package formula
|
||
|
|
|
||
|
|
import "b612.me/astro/tools"
|
||
|
|
|
||
|
|
// DistanceUnit 距离输入单位，与 tools 共用同一套枚举 / a unit accepted for distance input, shared with tools.
|
||
|
|
type DistanceUnit = tools.DistanceUnit
|
||
|
|
|
||
|
|
const (
|
||
|
|
// DistanceParsec 秒差距 / parsec.
|
||
|
|
DistanceParsec = tools.DistanceParsec
|
||
|
|
// DistanceLightYear 光年 / light-year.
|
||
|
|
DistanceLightYear = tools.DistanceLightYear
|
||
|
|
// DistanceAU 天文单位 / astronomical unit.
|
||
|
|
DistanceAU = tools.DistanceAU
|
||
|
|
)
|
||
|
|
|
||
|
|
// Distance 把给定单位的距离换算为秒差距 / converts a distance in the given unit to parsecs.
|
||
|
|
//
|
||
|
|
// 换算基元位于 tools，本函数只是对外转发；非正数、NaN 与未知单位返回 NaN。
|
||
|
|
func Distance(value float64, unit DistanceUnit) float64 {
|
||
|
|
return tools.DistanceToParsecs(value, unit)
|
||
|
|
}
|