b612
044f2f4381
- 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
95 lines
3.1 KiB
Go
95 lines
3.1 KiB
Go
package basic
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import (
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"math"
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"testing"
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)
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// 本文件用改动前的“七个候选全精修”实现做差分对照与 A/B 基准。
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func moonMaximumDeclinationReferenceSearch(jd float64, coeffs moonMaxDeclinationCoefficients, direction int, includeCurrent bool) DeclinationEvent {
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if !finite(jd) {
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return DeclinationEvent{}
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}
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cfg := moonMaximumDeclinationSearchConfig(coeffs)
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centerK := moonMaximumDeclinationOffset(jd, coeffs)
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found := false
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bestDistance := math.Inf(1)
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var best DeclinationEvent
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for offset := -moonMaxDeclinationSearchSpan; offset <= moonMaxDeclinationSearchSpan; offset++ {
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event := moonMaximumDeclinationEvent(centerK+offset, coeffs, cfg)
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delta := event.JD - jd
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if !moonMaximumDeclinationMatchesDirection(delta, direction, includeCurrent) {
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continue
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}
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distance := math.Abs(delta)
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if !found || distance < bestDistance || (distance == bestDistance && moonMaximumDeclinationEarlier(event, best)) {
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best = event
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bestDistance = distance
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found = true
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}
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}
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return best
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}
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func moonMaximumDeclinationReferenceClosest(jd float64, coeffs moonMaxDeclinationCoefficients) DeclinationEvent {
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if !finite(jd) {
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return DeclinationEvent{}
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}
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last := moonMaximumDeclinationReferenceSearch(jd, coeffs, -1, true)
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next := moonMaximumDeclinationReferenceSearch(jd, coeffs, 1, false)
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lastDistance := math.Abs(jd - last.JD)
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nextDistance := math.Abs(next.JD - jd)
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if lastDistance <= nextDistance {
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return last
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}
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return next
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}
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func TestMoonMaximumDeclinationPruningMatchesFullSearch(t *testing.T) {
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if testing.Short() {
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t.Skip("slow regression")
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}
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for _, coeffs := range []moonMaxDeclinationCoefficients{moonMaxDeclinationNorthCoefficients, moonMaxDeclinationSouthCoefficients} {
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for jd := JDCalc(2024, 1, 1); jd <= JDCalc(2025, 6, 1); jd += 2.5 {
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for _, direction := range []struct {
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name string
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dir int
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includeCurrent bool
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fn func(float64) DeclinationEvent
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}{
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{"Last", -1, true, func(v float64) DeclinationEvent {
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return moonMaximumDeclinationSearch(v, coeffs, -1, true)
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}},
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{"Next", 1, false, func(v float64) DeclinationEvent {
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return moonMaximumDeclinationSearch(v, coeffs, 1, false)
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}},
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} {
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want := moonMaximumDeclinationReferenceSearch(jd, coeffs, direction.dir, direction.includeCurrent)
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got := direction.fn(jd)
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if got != want {
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t.Fatalf("k=%v %s(%v) = %+v, want %+v", coeffs.sign, direction.name, jd, got, want)
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}
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}
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wantClosest := moonMaximumDeclinationReferenceClosest(jd, coeffs)
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if got := moonClosestMaximumDeclination(jd, coeffs); got != wantClosest {
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t.Fatalf("k=%v Closest(%v) = %+v, want %+v", coeffs.sign, jd, got, wantClosest)
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}
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}
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}
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}
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func BenchmarkMoonMaximumDeclinationFullSearchReference(b *testing.B) {
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jd := JDCalc(2025, 3, 1)
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b.Run("Next", func(b *testing.B) {
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for i := 0; i < b.N; i++ {
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_ = moonMaximumDeclinationReferenceSearch(jd, moonMaxDeclinationNorthCoefficients, 1, false)
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}
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})
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b.Run("Closest", func(b *testing.B) {
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for i := 0; i < b.N; i++ {
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_ = moonMaximumDeclinationReferenceClosest(jd, moonMaxDeclinationNorthCoefficients)
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}
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})
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}
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