39 lines
1.6 KiB
Go
39 lines
1.6 KiB
Go
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package sun
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import (
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"time"
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"b612.me/astro/internal/ephem"
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)
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// Sun 指定星历实例的计算模块 / computation module bound to an ephemeris instance.
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type Sun struct{ inst *ephem.Instance }
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// NewWithInstance 创建指定星历实例的模块，nil 使用全局模型 / create a module; nil uses the global model.
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func NewWithInstance(inst *ephem.Instance) *Sun { return &Sun{inst: inst} }
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var defaultModule Sun
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// AxialtiltNutation 交角章动（IAU 2000B） / nutation in obliquity, IAU 2000B.
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func (module *Sun) AxialtiltNutation(date time.Time) float64 { return AxialtiltNutation(date) }
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// AxialtiltNutation1980 交角章动（IAU 1980） / nutation in obliquity, IAU 1980.
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func (module *Sun) AxialtiltNutation1980(date time.Time) float64 { return AxialtiltNutation1980(date) }
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// EclipticNutation 黄经章动（IAU 2000B） / nutation in longitude, IAU 2000B.
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func (module *Sun) EclipticNutation(date time.Time) float64 { return EclipticNutation(date) }
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// EclipticNutation1980 黄经章动（IAU 1980） / nutation in longitude, IAU 1980.
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func (module *Sun) EclipticNutation1980(date time.Time) float64 { return EclipticNutation1980(date) }
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// EclipticObliquity 黄赤交角 / ecliptic obliquity.
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func (module *Sun) EclipticObliquity(date time.Time, nutation bool) float64 {
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return EclipticObliquity(date, nutation)
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}
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// GeometricLo 太阳几何黄经 / geometric ecliptic longitude.
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func (module *Sun) GeometricLo(date time.Time) float64 { return GeometricLo(date) }
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// MidFunc 太阳中心差 / solar equation of center.
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func (module *Sun) MidFunc(date time.Time) float64 { return MidFunc(date) }
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