feat: 引入可切换星历模型并扩展天象观测链路
- 新增半解析、旧模型、自定义与多源堆叠星历实例，提供 Context、Instance、SPK 读取及状态与视位置计算 - 统一太阳、月球和行星实例接口，扩展黄经穿越、留、相位、最近角距、偕日可见、任意高度升落、轨道节点及凌日等天象查询 - 完善日月食、月掩与凌日的月缘剖面、有限盘面接触、站心修正、局地可见性、全球路径和地图输出 - 新增 SVG、GeoJSON、KML 天象输出及凌日、月掩和月缘地形相关缓存与几何求解 - 新增恒星星表导入与查询，支持 CSV、Hipparcos、BSC5、Stellarium 等格式及名称、交叉标识、锥面检索和星等过滤 - 补充 IAU 2006、地球定向、折射消光、大气观测、轨道传播及半解析行星/月球数据支持 - 将默认未来民用时标切换为 TimeScaleLeapHour，更新 2027–2400 农历速查表、中文日期解析和时区边界处理 - 增加事件基线、跨模型回归、几何边界、月缘地形和输出契约测试，完善中英文手册、示例资源、NOTICE 与忽略规则
This commit is contained in:
+116
-85
@@ -75,7 +75,9 @@ type planetTransitState struct {
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internalContactMetric float64
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}
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func mercuryTransitConfig() planetTransitConfig {
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func mercuryTransitConfig(instances ...*Instance) planetTransitConfig {
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inst := instanceValue(instances)
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return planetTransitConfig{
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planetIndex: 1,
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synodicPeriodDays: MERCURY_S_PERIOD,
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@@ -83,16 +85,18 @@ func mercuryTransitConfig() planetTransitConfig {
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seasonWindowDays: 12,
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latitudePrefilter: 1.0,
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conjunctionStepDay: 0.00001,
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apparentLoN: MercuryApparentLoN,
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apparentBoN: MercuryApparentBoN,
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apparentRaDecN: MercuryApparentRaDecN,
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semidiameterN: MercurySemidiameterN,
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earthDistanceN: EarthMercuryAwayN,
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nodeN: MercuryAscendingNodeN,
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apparentLoN: func(jd float64, n int) float64 { return MercuryApparentLoNWithInstance(jd, n, inst) },
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apparentBoN: func(jd float64, n int) float64 { return MercuryApparentBoNWithInstance(jd, n, inst) },
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apparentRaDecN: func(jde float64, n int) (float64, float64) { return MercuryApparentRaDecNWithInstance(jde, n, inst) },
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semidiameterN: func(jde float64, n int) float64 { return MercurySemidiameterNWithInstance(jde, n, inst) },
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earthDistanceN: func(jd float64, n int) float64 { return EarthMercuryAwayNWithInstance(jd, n, inst) },
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nodeN: func(jd float64, n int) float64 { return MercuryAscendingNodeNWithInstance(jd, n, inst) },
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}
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}
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func venusTransitConfig() planetTransitConfig {
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func venusTransitConfig(instances ...*Instance) planetTransitConfig {
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inst := instanceValue(instances)
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return planetTransitConfig{
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planetIndex: 2,
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synodicPeriodDays: VENUS_S_PERIOD,
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@@ -100,52 +104,54 @@ func venusTransitConfig() planetTransitConfig {
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seasonWindowDays: 8,
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latitudePrefilter: 0.8,
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conjunctionStepDay: 0.00001,
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apparentLoN: VenusApparentLoN,
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apparentBoN: VenusApparentBoN,
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apparentRaDecN: VenusApparentRaDecN,
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semidiameterN: VenusSemidiameterN,
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earthDistanceN: EarthVenusAwayN,
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nodeN: VenusAscendingNodeN,
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apparentLoN: func(jd float64, n int) float64 { return VenusApparentLoNWithInstance(jd, n, inst) },
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apparentBoN: func(jd float64, n int) float64 { return VenusApparentBoNWithInstance(jd, n, inst) },
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apparentRaDecN: func(jd float64, n int) (float64, float64) { return VenusApparentRaDecNWithInstance(jd, n, inst) },
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semidiameterN: func(jde float64, n int) float64 { return VenusSemidiameterNWithInstance(jde, n, inst) },
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earthDistanceN: func(jd float64, n int) float64 { return EarthVenusAwayNWithInstance(jd, n, inst) },
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nodeN: func(jd float64, n int) float64 { return VenusAscendingNodeNWithInstance(jd, n, inst) },
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}
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}
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// NextMercuryTransit 返回给定时刻之后的下一次地心水星凌日。
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func NextMercuryTransit(jde float64) PlanetTransitResult {
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result, _ := searchPlanetTransit(jde, mercuryTransitConfig(), 1, false)
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// NextMercuryTransitWithInstance 用指定星历实例求值；inst 为 nil 时用进程当前模型 / evaluation with an explicit instance; nil uses the process model.
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func NextMercuryTransitWithInstance(jde float64, inst *Instance) PlanetTransitResult {
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result, _ := searchPlanetTransit(jde, mercuryTransitConfig(inst), 1, false, inst)
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return result
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}
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// LastMercuryTransit 返回给定时刻之前的上一次地心水星凌日。
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func LastMercuryTransit(jde float64) PlanetTransitResult {
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result, _ := searchPlanetTransit(jde, mercuryTransitConfig(), -1, true)
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// LastMercuryTransitWithInstance 用指定星历实例求值；inst 为 nil 时用进程当前模型 / evaluation with an explicit instance; nil uses the process model.
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func LastMercuryTransitWithInstance(jde float64, inst *Instance) PlanetTransitResult {
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result, _ := searchPlanetTransit(jde, mercuryTransitConfig(inst), -1, true, inst)
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return result
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}
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// ClosestMercuryTransit 返回距给定时刻最近的一次地心水星凌日。
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func ClosestMercuryTransit(jde float64) PlanetTransitResult {
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return closestPlanetTransit(jde, mercuryTransitConfig())
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// ClosestMercuryTransitWithInstance 用指定星历实例求值；inst 为 nil 时用进程当前模型 / evaluation with an explicit instance; nil uses the process model.
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func ClosestMercuryTransitWithInstance(jde float64, inst *Instance) PlanetTransitResult {
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return closestPlanetTransit(jde, mercuryTransitConfig(inst), inst)
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}
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// NextVenusTransit 返回给定时刻之后的下一次地心金星凌日。
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func NextVenusTransit(jde float64) PlanetTransitResult {
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result, _ := searchPlanetTransit(jde, venusTransitConfig(), 1, false)
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// NextVenusTransitWithInstance 用指定星历实例求值；inst 为 nil 时用进程当前模型 / evaluation with an explicit instance; nil uses the process model.
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func NextVenusTransitWithInstance(jde float64, inst *Instance) PlanetTransitResult {
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result, _ := searchPlanetTransit(jde, venusTransitConfig(inst), 1, false, inst)
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return result
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}
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// LastVenusTransit 返回给定时刻之前的上一次地心金星凌日。
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func LastVenusTransit(jde float64) PlanetTransitResult {
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result, _ := searchPlanetTransit(jde, venusTransitConfig(), -1, true)
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// LastVenusTransitWithInstance 用指定星历实例求值；inst 为 nil 时用进程当前模型 / evaluation with an explicit instance; nil uses the process model.
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func LastVenusTransitWithInstance(jde float64, inst *Instance) PlanetTransitResult {
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result, _ := searchPlanetTransit(jde, venusTransitConfig(inst), -1, true, inst)
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return result
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}
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// ClosestVenusTransit 返回距给定时刻最近的一次地心金星凌日。
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func ClosestVenusTransit(jde float64) PlanetTransitResult {
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return closestPlanetTransit(jde, venusTransitConfig())
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// ClosestVenusTransitWithInstance 用指定星历实例求值；inst 为 nil 时用进程当前模型 / evaluation with an explicit instance; nil uses the process model.
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func ClosestVenusTransitWithInstance(jde float64, inst *Instance) PlanetTransitResult {
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return closestPlanetTransit(jde, venusTransitConfig(inst), inst)
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}
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func closestPlanetTransit(jde float64, cfg planetTransitConfig) PlanetTransitResult {
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last, hasLast := searchPlanetTransit(jde, cfg, -1, true)
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next, hasNext := searchPlanetTransit(jde, cfg, 1, false)
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func closestPlanetTransit(jde float64, cfg planetTransitConfig, instances ...*Instance) PlanetTransitResult {
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inst := instanceValue(instances)
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last, hasLast := searchPlanetTransit(jde, cfg, -1, true, inst)
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next, hasNext := searchPlanetTransit(jde, cfg, 1, false, inst)
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switch {
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case hasLast && !hasNext:
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return last
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@@ -160,24 +166,27 @@ func closestPlanetTransit(jde float64, cfg planetTransitConfig) PlanetTransitRes
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return next
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}
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func searchPlanetTransit(jd float64, cfg planetTransitConfig, direction int, includeCurrent bool) (PlanetTransitResult, bool) {
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func searchPlanetTransit(jd float64, cfg planetTransitConfig, direction int, includeCurrent bool, instances ...*Instance) (PlanetTransitResult, bool) {
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inst := instanceValue(instances)
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if !isFiniteFloat(jd) || direction == 0 {
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return PlanetTransitResult{}, false
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}
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targetTT := UTC2TT(jd)
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probeTT := targetTT
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// 节点季可能略早于查询时刻而凌甚仍在其后，从一个季窗之前起探，方向由凌甚时刻再判。
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probeTT := targetTT - float64(direction)*cfg.seasonWindowDays
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for i := 0; i < planetTransitSearchLimit; i++ {
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seasonTT, ok := nextPlanetTransitSeasonTT(probeTT, cfg, direction)
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seasonTT, ok := nextPlanetTransitSeasonTT(probeTT, cfg, direction, inst)
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if !ok {
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return PlanetTransitResult{}, false
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}
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seedTT := nearestPlanetTransitInferiorSeedTT(seasonTT, cfg)
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if math.Abs(seedTT-seasonTT) <= cfg.seasonWindowDays {
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conjunctionTT := refinePlanetTransitInferiorConjunctionTT(seedTT, cfg)
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if math.Abs(conjunctionTT-seasonTT) <= cfg.seasonWindowDays+1 && isPotentialPlanetTransit(conjunctionTT, cfg) {
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resultTT, ok := planetTransitAtInferiorConjunctionTT(conjunctionTT, cfg)
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conjunctionTT := refinePlanetTransitInferiorConjunctionTT(seedTT, cfg, inst)
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if math.Abs(conjunctionTT-seasonTT) <= cfg.seasonWindowDays+1 && isPotentialPlanetTransit(conjunctionTT, cfg, inst) {
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resultTT, ok := planetTransitAtInferiorConjunctionTT(conjunctionTT, cfg, inst)
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if ok && planetTransitMatchesDirection(resultTT.Greatest, targetTT, direction, includeCurrent) {
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return planetTransitResultTTToUT(resultTT), true
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}
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@@ -190,11 +199,13 @@ func searchPlanetTransit(jd float64, cfg planetTransitConfig, direction int, inc
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return PlanetTransitResult{}, false
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}
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func nextPlanetTransitSeasonTT(jdTT float64, cfg planetTransitConfig, direction int) (float64, bool) {
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func nextPlanetTransitSeasonTT(jdTT float64, cfg planetTransitConfig, direction int, instances ...*Instance) (float64, bool) {
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inst := instanceValue(instances)
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best := math.NaN()
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for nodeOffset := 0; nodeOffset <= 1; nodeOffset++ {
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candidate := estimatePlanetTransitSeasonTT(jdTT, cfg, nodeOffset, direction)
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candidate = refinePlanetTransitSeasonTT(candidate, cfg, nodeOffset)
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candidate := estimatePlanetTransitSeasonTT(jdTT, cfg, nodeOffset, direction, inst)
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candidate = refinePlanetTransitSeasonTT(candidate, cfg, nodeOffset, inst)
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if !isFiniteFloat(candidate) {
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continue
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}
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@@ -205,7 +216,7 @@ func nextPlanetTransitSeasonTT(jdTT float64, cfg planetTransitConfig, direction
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break
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}
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candidate += float64(direction) * planetTransitTropicalYearDays
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candidate = refinePlanetTransitSeasonTT(candidate, cfg, nodeOffset)
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candidate = refinePlanetTransitSeasonTT(candidate, cfg, nodeOffset, inst)
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if !isFiniteFloat(candidate) {
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break
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}
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@@ -223,8 +234,10 @@ func nextPlanetTransitSeasonTT(jdTT float64, cfg planetTransitConfig, direction
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return best, true
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}
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func estimatePlanetTransitSeasonTT(jdTT float64, cfg planetTransitConfig, nodeOffset int, direction int) float64 {
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sunLongitude := HSunApparentLoN(jdTT, planetTransitCoarseN)
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func estimatePlanetTransitSeasonTT(jdTT float64, cfg planetTransitConfig, nodeOffset int, direction int, instances ...*Instance) float64 {
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inst := instanceValue(instances)
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sunLongitude := HSunApparentLoNWithInstance(jdTT, planetTransitCoarseN, inst)
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nodeLongitude := planetTransitNodeLongitude(jdTT, cfg, nodeOffset, planetTransitCoarseN)
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if direction > 0 {
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delta := Limit360(nodeLongitude - sunLongitude)
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@@ -240,13 +253,15 @@ func estimatePlanetTransitSeasonTT(jdTT float64, cfg planetTransitConfig, nodeOf
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return jdTT - delta/planetTransitMeanSolarMotionDegPerDay
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}
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func refinePlanetTransitSeasonTT(seedTT float64, cfg planetTransitConfig, nodeOffset int) float64 {
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func refinePlanetTransitSeasonTT(seedTT float64, cfg planetTransitConfig, nodeOffset int, instances ...*Instance) float64 {
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inst := instanceValue(instances)
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current := seedTT
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for i := 0; i < 8; i++ {
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prev := current
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value := planetTransitSunNodeLongitudeDelta(prev, cfg, nodeOffset)
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slope := (planetTransitSunNodeLongitudeDelta(prev+0.5, cfg, nodeOffset) -
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planetTransitSunNodeLongitudeDelta(prev-0.5, cfg, nodeOffset)) / 1.0
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value := planetTransitSunNodeLongitudeDelta(prev, cfg, nodeOffset, inst)
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slope := (planetTransitSunNodeLongitudeDelta(prev+0.5, cfg, nodeOffset, inst) -
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planetTransitSunNodeLongitudeDelta(prev-0.5, cfg, nodeOffset, inst)) / 1.0
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if slope == 0 || !isFiniteFloat(slope) {
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break
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}
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@@ -258,8 +273,10 @@ func refinePlanetTransitSeasonTT(seedTT float64, cfg planetTransitConfig, nodeOf
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return current
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}
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func planetTransitSunNodeLongitudeDelta(jdTT float64, cfg planetTransitConfig, nodeOffset int) float64 {
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return planetTransitAngleDelta(HSunApparentLoN(jdTT, planetTransitCoarseN) -
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func planetTransitSunNodeLongitudeDelta(jdTT float64, cfg planetTransitConfig, nodeOffset int, instances ...*Instance) float64 {
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inst := instanceValue(instances)
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return planetTransitAngleDelta(HSunApparentLoNWithInstance(jdTT, planetTransitCoarseN, inst) -
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planetTransitNodeLongitude(jdTT, cfg, nodeOffset, planetTransitCoarseN))
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}
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@@ -272,13 +289,15 @@ func nearestPlanetTransitInferiorSeedTT(seasonTT float64, cfg planetTransitConfi
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return cfg.anchorInferiorTT + k*cfg.synodicPeriodDays
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}
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func refinePlanetTransitInferiorConjunctionTT(seedTT float64, cfg planetTransitConfig) float64 {
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func refinePlanetTransitInferiorConjunctionTT(seedTT float64, cfg planetTransitConfig, instances ...*Instance) float64 {
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inst := instanceValue(instances)
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current := seedTT
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for i := 0; i < 4; i++ {
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prev := current
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value := planetTransitLongitudeDeltaN(prev, cfg, planetTransitCoarseN)
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slope := (planetTransitLongitudeDeltaN(prev+cfg.conjunctionStepDay, cfg, planetTransitCoarseN) -
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planetTransitLongitudeDeltaN(prev-cfg.conjunctionStepDay, cfg, planetTransitCoarseN)) / (2 * cfg.conjunctionStepDay)
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value := planetTransitLongitudeDeltaN(prev, cfg, planetTransitCoarseN, inst)
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slope := (planetTransitLongitudeDeltaN(prev+cfg.conjunctionStepDay, cfg, planetTransitCoarseN, inst) -
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planetTransitLongitudeDeltaN(prev-cfg.conjunctionStepDay, cfg, planetTransitCoarseN, inst)) / (2 * cfg.conjunctionStepDay)
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if slope == 0 || !isFiniteFloat(slope) {
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break
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}
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@@ -289,9 +308,9 @@ func refinePlanetTransitInferiorConjunctionTT(seedTT float64, cfg planetTransitC
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}
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for i := 0; i < 8; i++ {
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prev := current
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value := planetTransitLongitudeDeltaN(prev, cfg, -1)
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slope := (planetTransitLongitudeDeltaN(prev+cfg.conjunctionStepDay, cfg, -1) -
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planetTransitLongitudeDeltaN(prev-cfg.conjunctionStepDay, cfg, -1)) / (2 * cfg.conjunctionStepDay)
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value := planetTransitLongitudeDeltaN(prev, cfg, -1, inst)
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slope := (planetTransitLongitudeDeltaN(prev+cfg.conjunctionStepDay, cfg, -1, inst) -
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planetTransitLongitudeDeltaN(prev-cfg.conjunctionStepDay, cfg, -1, inst)) / (2 * cfg.conjunctionStepDay)
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if slope == 0 || !isFiniteFloat(slope) {
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break
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}
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@@ -303,20 +322,26 @@ func refinePlanetTransitInferiorConjunctionTT(seedTT float64, cfg planetTransitC
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return current
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}
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func planetTransitLongitudeDeltaN(jdTT float64, cfg planetTransitConfig, n int) float64 {
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return planetTransitAngleDelta(cfg.apparentLoN(jdTT, n) - HSunApparentLoN(jdTT, n))
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func planetTransitLongitudeDeltaN(jdTT float64, cfg planetTransitConfig, n int, instances ...*Instance) float64 {
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inst := instanceValue(instances)
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return planetTransitAngleDelta(cfg.apparentLoN(jdTT, n) - HSunApparentLoNWithInstance(jdTT, n, inst))
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}
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func isPotentialPlanetTransit(conjunctionTT float64, cfg planetTransitConfig) bool {
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if cfg.earthDistanceN(conjunctionTT, planetTransitCoarseN) > EarthAwayN(conjunctionTT, planetTransitCoarseN) {
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func isPotentialPlanetTransit(conjunctionTT float64, cfg planetTransitConfig, instances ...*Instance) bool {
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inst := instanceValue(instances)
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if cfg.earthDistanceN(conjunctionTT, planetTransitCoarseN) > EarthAwayNWithInstance(conjunctionTT, planetTransitCoarseN, inst) {
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return false
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}
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return math.Abs(cfg.apparentBoN(conjunctionTT, planetTransitCoarseN)) <= cfg.latitudePrefilter
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}
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func planetTransitAtInferiorConjunctionTT(conjunctionTT float64, cfg planetTransitConfig) (PlanetTransitResult, bool) {
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greatestTT := greatestPlanetTransitTT(conjunctionTT, cfg)
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greatestState := planetTransitStateAt(greatestTT, cfg, -1)
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func planetTransitAtInferiorConjunctionTT(conjunctionTT float64, cfg planetTransitConfig, instances ...*Instance) (PlanetTransitResult, bool) {
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inst := instanceValue(instances)
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greatestTT := greatestPlanetTransitTT(conjunctionTT, cfg, inst)
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greatestState := planetTransitStateAt(greatestTT, cfg, -1, inst)
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if !isFiniteFloat(greatestState.externalContactMetric) || greatestState.externalContactMetric > 0 {
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return PlanetTransitResult{}, false
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}
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@@ -332,11 +357,11 @@ func planetTransitAtInferiorConjunctionTT(conjunctionTT float64, cfg planetTrans
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HasInternal: greatestState.internalContactMetric <= 0,
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}
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externalIngress, ok := refinePlanetTransitContactTT(greatestTT, cfg, -1, false)
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externalIngress, ok := refinePlanetTransitContactTT(greatestTT, cfg, -1, false, inst)
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if !ok {
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return PlanetTransitResult{}, false
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}
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externalEgress, ok := refinePlanetTransitContactTT(greatestTT, cfg, 1, false)
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externalEgress, ok := refinePlanetTransitContactTT(greatestTT, cfg, 1, false, inst)
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if !ok || externalEgress <= externalIngress {
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return PlanetTransitResult{}, false
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}
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@@ -344,11 +369,11 @@ func planetTransitAtInferiorConjunctionTT(conjunctionTT float64, cfg planetTrans
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result.ExternalEgress = externalEgress
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if result.HasInternal {
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internalIngress, ok := refinePlanetTransitContactTT(greatestTT, cfg, -1, true)
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internalIngress, ok := refinePlanetTransitContactTT(greatestTT, cfg, -1, true, inst)
|
||||
if ok {
|
||||
result.InternalIngress = internalIngress
|
||||
}
|
||||
internalEgress, ok := refinePlanetTransitContactTT(greatestTT, cfg, 1, true)
|
||||
internalEgress, ok := refinePlanetTransitContactTT(greatestTT, cfg, 1, true, inst)
|
||||
if ok && internalEgress > internalIngress {
|
||||
result.InternalEgress = internalEgress
|
||||
}
|
||||
@@ -358,15 +383,17 @@ func planetTransitAtInferiorConjunctionTT(conjunctionTT float64, cfg planetTrans
|
||||
return result, true
|
||||
}
|
||||
|
||||
func greatestPlanetTransitTT(seedTT float64, cfg planetTransitConfig) float64 {
|
||||
func greatestPlanetTransitTT(seedTT float64, cfg planetTransitConfig, instances ...*Instance) float64 {
|
||||
inst := instanceValue(instances)
|
||||
|
||||
left := seedTT - planetTransitGreatestWindowDays
|
||||
right := seedTT + planetTransitGreatestWindowDays
|
||||
goldenRatio := (math.Sqrt(5) - 1) / 2
|
||||
|
||||
x1 := right - goldenRatio*(right-left)
|
||||
x2 := left + goldenRatio*(right-left)
|
||||
f1 := planetTransitStateAt(x1, cfg, planetTransitCoarseN).separationSquared
|
||||
f2 := planetTransitStateAt(x2, cfg, planetTransitCoarseN).separationSquared
|
||||
f1 := planetTransitStateAt(x1, cfg, planetTransitCoarseN, inst).separationSquared
|
||||
f2 := planetTransitStateAt(x2, cfg, planetTransitCoarseN, inst).separationSquared
|
||||
|
||||
for i := 0; i < 80 && right-left > planetTransitGreatestToleranceDays; i++ {
|
||||
if f1 <= f2 {
|
||||
@@ -374,14 +401,14 @@ func greatestPlanetTransitTT(seedTT float64, cfg planetTransitConfig) float64 {
|
||||
x2 = x1
|
||||
f2 = f1
|
||||
x1 = right - goldenRatio*(right-left)
|
||||
f1 = planetTransitStateAt(x1, cfg, planetTransitCoarseN).separationSquared
|
||||
f1 = planetTransitStateAt(x1, cfg, planetTransitCoarseN, inst).separationSquared
|
||||
continue
|
||||
}
|
||||
left = x1
|
||||
x1 = x2
|
||||
f1 = f2
|
||||
x2 = left + goldenRatio*(right-left)
|
||||
f2 = planetTransitStateAt(x2, cfg, planetTransitCoarseN).separationSquared
|
||||
f2 = planetTransitStateAt(x2, cfg, planetTransitCoarseN, inst).separationSquared
|
||||
}
|
||||
|
||||
center := (left + right) / 2
|
||||
@@ -389,31 +416,33 @@ func greatestPlanetTransitTT(seedTT float64, cfg planetTransitConfig) float64 {
|
||||
right = center + 2.0/24.0
|
||||
x1 = right - goldenRatio*(right-left)
|
||||
x2 = left + goldenRatio*(right-left)
|
||||
f1 = planetTransitStateAt(x1, cfg, -1).separationSquared
|
||||
f2 = planetTransitStateAt(x2, cfg, -1).separationSquared
|
||||
f1 = planetTransitStateAt(x1, cfg, -1, inst).separationSquared
|
||||
f2 = planetTransitStateAt(x2, cfg, -1, inst).separationSquared
|
||||
for i := 0; i < 80 && right-left > planetTransitGreatestToleranceDays; i++ {
|
||||
if f1 <= f2 {
|
||||
right = x2
|
||||
x2 = x1
|
||||
f2 = f1
|
||||
x1 = right - goldenRatio*(right-left)
|
||||
f1 = planetTransitStateAt(x1, cfg, -1).separationSquared
|
||||
f1 = planetTransitStateAt(x1, cfg, -1, inst).separationSquared
|
||||
continue
|
||||
}
|
||||
left = x1
|
||||
x1 = x2
|
||||
f1 = f2
|
||||
x2 = left + goldenRatio*(right-left)
|
||||
f2 = planetTransitStateAt(x2, cfg, -1).separationSquared
|
||||
f2 = planetTransitStateAt(x2, cfg, -1, inst).separationSquared
|
||||
}
|
||||
return (left + right) / 2
|
||||
}
|
||||
|
||||
func planetTransitStateAt(jdTT float64, cfg planetTransitConfig, n int) planetTransitState {
|
||||
func planetTransitStateAt(jdTT float64, cfg planetTransitConfig, n int, instances ...*Instance) planetTransitState {
|
||||
inst := instanceValue(instances)
|
||||
|
||||
planetRA, planetDec := cfg.apparentRaDecN(jdTT, n)
|
||||
sunRA, sunDec := HSunApparentRaDecN(jdTT, n)
|
||||
sunRA, sunDec := HSunApparentRaDecNWithInstance(jdTT, n, inst)
|
||||
separationArcsec := StarAngularSeparation(planetRA, planetDec, sunRA, sunDec) * 3600
|
||||
sunSemidiameter := SunSemidiameterN(jdTT, n)
|
||||
sunSemidiameter := SunSemidiameterNWithInstance(jdTT, n, inst)
|
||||
planetSemidiameter := cfg.semidiameterN(jdTT, n)
|
||||
return planetTransitState{
|
||||
jdTT: jdTT,
|
||||
@@ -426,12 +455,14 @@ func planetTransitStateAt(jdTT float64, cfg planetTransitConfig, n int) planetTr
|
||||
}
|
||||
}
|
||||
|
||||
func refinePlanetTransitContactTT(greatestTT float64, cfg planetTransitConfig, direction int, internal bool) (float64, bool) {
|
||||
func refinePlanetTransitContactTT(greatestTT float64, cfg planetTransitConfig, direction int, internal bool, instances ...*Instance) (float64, bool) {
|
||||
inst := instanceValue(instances)
|
||||
|
||||
if direction != -1 && direction != 1 {
|
||||
return 0, false
|
||||
}
|
||||
metric := func(jdTT float64) float64 {
|
||||
state := planetTransitStateAt(jdTT, cfg, -1)
|
||||
state := planetTransitStateAt(jdTT, cfg, -1, inst)
|
||||
if internal {
|
||||
return state.internalContactMetric
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user