starainrt
438f1700c7
- fix: Rename GetSunDownTime to GetSunSetTime in basic/sun.go and update related calls/outputs - fix: Update test cases to use new method and error constant names - improve: Rename all DownTime/Down functions to SetTime/Set for consistency - improve: Standardize ERR_XXX_NEVER_DOWN error constants to ERR_XXX_NEVER_SET, with ERR_XXX_NEVER_DOWN kept as compatibility alias - improve: More standard naming for interfaces and errors to improve maintainability and readability
296 lines
9.7 KiB
Go
296 lines
9.7 KiB
Go
package venus
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import (
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"b612.me/astro/basic"
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"b612.me/astro/calendar"
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"b612.me/astro/planet"
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"errors"
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"time"
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)
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var (
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ERR_VENUS_NEVER_RISE = errors.New("ERROR:极夜，金星今日永远在地平线下！")
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ERR_VENUS_NEVER_SET = errors.New("ERROR:极昼，金星今日永远在地平线上！")
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// ERR_VENUS_NEVER_DOWN deprecated: -- use ERR_VENUS_NEVER_SET instead
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ERR_VENUS_NEVER_DOWN = ERR_VENUS_NEVER_SET
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)
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// ApparentLo 视黄经
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func ApparentLo(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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return basic.VenusApparentLo(basic.TD2UT(jde, true))
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}
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// ApparentBo 视黄纬
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func ApparentBo(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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return basic.VenusApparentBo(basic.TD2UT(jde, true))
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}
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// ApparentRa 视赤经
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func ApparentRa(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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return basic.VenusApparentRa(basic.TD2UT(jde, true))
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}
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// ApparentDec 视赤纬
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func ApparentDec(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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return basic.VenusApparentDec(basic.TD2UT(jde, true))
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}
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// ApparentRaDec 视赤经赤纬
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func ApparentRaDec(date time.Time) (float64, float64) {
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jde := calendar.Date2JDE(date)
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return basic.VenusApparentRaDec(basic.TD2UT(jde, true))
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}
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// ApparentMagnitude 视星等
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func ApparentMagnitude(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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return basic.VenusMag(basic.TD2UT(jde, true))
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}
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// EarthDistance 与地球距离（天文单位）
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func EarthDistance(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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return basic.EarthVenusAway(basic.TD2UT(jde, true))
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}
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// EarthDistance 与太阳距离（天文单位）
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func SunDistance(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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return planet.WherePlanet(2, 2, basic.TD2UT(jde, true))
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}
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// Zenith 高度角
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func Zenith(date time.Time, lon, lat float64) float64 {
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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timezone := float64(loc) / 3600.0
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return basic.VenusHeight(jde, lon, lat, timezone)
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}
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// Azimuth 方位角
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func Azimuth(date time.Time, lon, lat float64) float64 {
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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timezone := float64(loc) / 3600.0
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return basic.VenusAzimuth(jde, lon, lat, timezone)
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}
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// HourAngle 时角
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// 返回给定经纬度、对应date时区date时刻的时角（
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func HourAngle(date time.Time, lon float64) float64 {
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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timezone := float64(loc) / 3600.0
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return basic.VenusHourAngle(jde, lon, timezone)
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}
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// CulminationTime 中天时间
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// 返回给定经纬度、对应date时区date时刻的中天日期
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func CulminationTime(date time.Time, lon float64) time.Time {
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if date.Hour() > 12 {
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date = date.Add(time.Hour * -12)
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}
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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timezone := float64(loc) / 3600.0
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calcJde := basic.VenusCulminationTime(jde, lon, timezone) - timezone/24.00
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return basic.JDE2DateByZone(calcJde, date.Location(), false)
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}
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// RiseTime 升起时间
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// date，取日期，时区忽略
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// lon，经度，东正西负
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// lat，纬度，北正南负
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// height，高度
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// aero，true时进行大气修正
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func RiseTime(date time.Time, lon, lat, height float64, aero bool) (time.Time, error) {
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var err error
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var aeroFloat float64
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if aero {
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aeroFloat = 1
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}
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if date.Hour() > 12 {
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date = date.Add(time.Hour * -12)
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}
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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timezone := float64(loc) / 3600.0
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riseJde := basic.VenusRiseTime(jde, lon, lat, timezone, aeroFloat, height)
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if riseJde == -2 {
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err = ERR_VENUS_NEVER_RISE
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}
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if riseJde == -1 {
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err = ERR_VENUS_NEVER_SET
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}
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return basic.JDE2DateByZone(riseJde, date.Location(), true), err
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}
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// deprecated: -- use SetTime instead
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// DownTime 落下时间
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// date，取日期，时区忽略
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// lon，经度，东正西负
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// lat，纬度，北正南负
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// height，高度
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// aero，true时进行大气修正
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func DownTime(date time.Time, lon, lat, height float64, aero bool) (time.Time, error) {
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return SetTime(date, lon, lat, height, aero)
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}
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// SetTime 落下时间
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// date，取日期，时区忽略
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// lon，经度，东正西负
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// lat，纬度，北正南负
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// height，高度
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// aero，true时进行大气修正
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func SetTime(date time.Time, lon, lat, height float64, aero bool) (time.Time, error) {
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var err error
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var aeroFloat float64
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if aero {
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aeroFloat = 1
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}
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if date.Hour() > 12 {
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date = date.Add(time.Hour * -12)
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}
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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timezone := float64(loc) / 3600.0
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riseJde := basic.VenusDownTime(jde, lon, lat, timezone, aeroFloat, height)
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if riseJde == -2 {
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err = ERR_VENUS_NEVER_RISE
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}
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if riseJde == -1 {
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err = ERR_VENUS_NEVER_SET
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}
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return basic.JDE2DateByZone(riseJde, date.Location(), true), err
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}
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// LastConjunction 上次合日时间
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// 返回上次合日时间，不区分上合下合
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func LastConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusConjunction(jde), date.Location(), false)
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}
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// NextConjunction 下次合日时间
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// 返回下次合日时间，不区分上合下合
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func NextConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusConjunction(jde), date.Location(), false)
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}
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// LastInferiorConjunction 上次下合时间
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// 返回上次下合日时间
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func LastInferiorConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusInferiorConjunction(jde), date.Location(), false)
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}
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// NextInferiorConjunction 下次下合时间
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// 返回下次合日时间
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func NextInferiorConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusInferiorConjunction(jde), date.Location(), false)
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}
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// LastSuperiorConjunction 上次上合时间
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// 返回上次下合时间
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func LastSuperiorConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusSuperiorConjunction(jde), date.Location(), false)
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}
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// NextSuperiorConjunction 下次上合时间
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// 返回下次上合时间
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func NextSuperiorConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusSuperiorConjunction(jde), date.Location(), false)
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}
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// LastRetrograde 上次留的时间
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// 返回上次留时间，不区分顺逆
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func LastRetrograde(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusRetrograde(jde), date.Location(), false)
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}
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// NextRetrograde 下次留时间
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// 返回下次留的时间，不区分顺逆
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func NextRetrograde(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusRetrograde(jde), date.Location(), false)
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}
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// LastProgradeToRetrograde 上次留（顺转逆）
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// 返回上次顺转逆留的时间
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func LastProgradeToRetrograde(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusProgradeToRetrograde(jde), date.Location(), false)
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}
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// NextProgradeToRetrograde 下次留（顺转逆）
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// 返回下次顺转逆留的时间
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func NextProgradeToRetrograde(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusProgradeToRetrograde(jde), date.Location(), false)
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}
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// LastRetrogradeToPrograde 上次留（逆转瞬）
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// 返回上次逆转瞬留的时间
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func LastRetrogradeToPrograde(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusRetrogradeToPrograde(jde), date.Location(), false)
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}
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// NextRetrogradeToPrograde 上次留（逆转瞬）
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// // 返回上次逆转瞬留的时间
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func NextRetrogradeToPrograde(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusRetrogradeToPrograde(jde), date.Location(), false)
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}
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// LastGreatestElongation 上次大距时间
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// 返回上次大距时间，不区分东西大距
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func LastGreatestElongation(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusGreatestElongation(jde), date.Location(), false)
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}
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// NextGreatestElongation 下次大距时间
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// 返回下次大距时间，不区分东西大距
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func NextGreatestElongation(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusGreatestElongation(jde), date.Location(), false)
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}
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// LastGreatestElongationEast 上次东大距时间
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// 返回上次东大距时间
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func LastGreatestElongationEast(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusGreatestElongationEast(jde), date.Location(), false)
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}
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// NextGreatestElongationEast 下次东大距时间
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// 返回下次东大距时间
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func NextGreatestElongationEast(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusGreatestElongationEast(jde), date.Location(), false)
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}
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// LastGreatestElongationWest 上次西大距时间
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// 返回上次西大距时间
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func LastGreatestElongationWest(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusGreatestElongationWest(jde), date.Location(), false)
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}
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// NextGreatestElongationWest 下次西大距时间
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// 返回下次西大距时间
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func NextGreatestElongationWest(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusGreatestElongationWest(jde), date.Location(), false)
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}
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