62 lines
2.9 KiB
Go
62 lines
2.9 KiB
Go
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package basic
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import (
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"time"
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)
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type venusEventFunc func(float64) float64
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type venusEventCase struct {
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name string
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tolerance float64
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fn venusEventFunc
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}
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func venusEventSamples() []time.Time {
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start := time.Date(1994, 2, 3, 4, 56, 12, 345000000, time.UTC)
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samples := make([]time.Time, 0, 96)
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for i := 0; i < 48; i++ {
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d := start.AddDate(0, 0, i*173)
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d = d.Add(time.Duration((i%9)*5)*time.Hour + time.Duration((i%7)*11)*time.Minute + time.Duration((i%13)*13)*time.Second)
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samples = append(samples, d)
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}
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extraStart := start.AddDate(0, 0, 29)
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for i := 0; i < 48; i++ {
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d := extraStart.AddDate(0, 0, i*127)
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d = d.Add(time.Duration((i%8)*6)*time.Hour + time.Duration((i%10)*13)*time.Minute + time.Duration((i%15)*17)*time.Second)
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samples = append(samples, d)
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}
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return samples
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}
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func venusEventSampleTTJD(date time.Time) float64 {
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return TD2UT(Date2JDE(date.UTC()), true)
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}
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func venusEventCases() []venusEventCase {
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const (
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conjunctionTolerance = 0.00001
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searchTolerance = 30.0 / 86400.0
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)
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return []venusEventCase{
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{name: "LastVenusConjunction", tolerance: conjunctionTolerance, fn: LastVenusConjunction},
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{name: "NextVenusConjunction", tolerance: conjunctionTolerance, fn: NextVenusConjunction},
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{name: "LastVenusInferiorConjunction", tolerance: conjunctionTolerance, fn: LastVenusInferiorConjunction},
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{name: "NextVenusInferiorConjunction", tolerance: conjunctionTolerance, fn: NextVenusInferiorConjunction},
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{name: "LastVenusSuperiorConjunction", tolerance: conjunctionTolerance, fn: LastVenusSuperiorConjunction},
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{name: "NextVenusSuperiorConjunction", tolerance: conjunctionTolerance, fn: NextVenusSuperiorConjunction},
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{name: "LastVenusRetrograde", tolerance: searchTolerance, fn: LastVenusRetrograde},
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{name: "NextVenusRetrograde", tolerance: searchTolerance, fn: NextVenusRetrograde},
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{name: "LastVenusProgradeToRetrograde", tolerance: searchTolerance, fn: LastVenusProgradeToRetrograde},
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{name: "NextVenusProgradeToRetrograde", tolerance: searchTolerance, fn: NextVenusProgradeToRetrograde},
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{name: "LastVenusRetrogradeToPrograde", tolerance: searchTolerance, fn: LastVenusRetrogradeToPrograde},
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{name: "NextVenusRetrogradeToPrograde", tolerance: searchTolerance, fn: NextVenusRetrogradeToPrograde},
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{name: "LastVenusGreatestElongation", tolerance: searchTolerance, fn: LastVenusGreatestElongation},
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{name: "NextVenusGreatestElongation", tolerance: searchTolerance, fn: NextVenusGreatestElongation},
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{name: "LastVenusGreatestElongationEast", tolerance: searchTolerance, fn: LastVenusGreatestElongationEast},
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{name: "NextVenusGreatestElongationEast", tolerance: searchTolerance, fn: NextVenusGreatestElongationEast},
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{name: "LastVenusGreatestElongationWest", tolerance: searchTolerance, fn: LastVenusGreatestElongationWest},
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{name: "NextVenusGreatestElongationWest", tolerance: searchTolerance, fn: NextVenusGreatestElongationWest},
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}
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}
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