b612
2bf8478639
- 新增日月食中心带、偏食带、阴影足迹、等时线、食分线及升落边界计算，支持极区与混合食拓扑 - 新增日食单时刻阴影求解器、站心状态查询、批量采样和 ΔT 覆盖接口 - 重构恒星与行星月掩路径，补充有限盘面接触、站心修正、掩带宽度、极区投影及升落边界 - 扩展 SVG 与 GeoJSON 输出，支持详细面板、全球/极区/地球投影、边界闭合、时间标记和拓扑签名 - 扩展日月食候选搜索、局地搜索、沙罗序列预计算与范围外推，补充系列锚点和成员一致性校验 - 补齐古历纪年、儒略历独有闰日、多公历候选、历法改革跨日及精确日期运算接口 - 优化 ΔT、章动、恒星时、月球地平线、事件根搜索和本地星历缓存，降低重复计算开销并提升边界稳定
87 lines
4.3 KiB
Go
87 lines
4.3 KiB
Go
package basic
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import (
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"fmt"
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"math"
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"testing"
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"b612.me/astro/internal/geodata"
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)
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func TestSolarEclipseHybridEnvelope21640323(t *testing.T) {
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seed := JDECalc(2164, 3, 23)
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result := SolarEclipsePartialFootprints(seed, SolarEclipsePartialFootprintOptions{StepDays: 2.0 / 1440, BoundaryPoints: 96})
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if len(result.CentralBandHorizonClosures) != 2 {
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t.Fatal("missing hybrid horizon closures")
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}
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if len(result.CentralBandSegments) != 3 {
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t.Fatalf("hybrid envelope segments=%d, want annular/total/annular", len(result.CentralBandSegments))
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}
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solver := newSolarEclipseSolver(CalcMoonSHByJDE(seed, 0), SolarEclipseModelNASABulletinSplitK)
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for _, closure := range result.CentralBandHorizonClosures {
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for _, point := range []SolarEclipsePathPoint{closure[0], closure[len(closure)-1]} {
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evaluation := solver.magnitudeEvaluationAt(point.JDE)
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state := evaluation.center.stateAt(point.Longitude*rad, point.Latitude*rad, 0)
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first, _ := solarCentralBandVectorResidual(evaluation, point.Longitude, point.Latitude, 1)
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second, _ := solarCentralBandVectorResidual(evaluation, point.Longitude, point.Latitude, -1)
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if math.Abs(solarEclipseCentralContactGap(state)) > 1e-7 || math.Abs(state.sunAltitudeRad) > 1e-7 ||
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math.Min(math.Hypot(first[0], first[1]), math.Hypot(second[0], second[1])) > 1.01*solarEclipseCentralVectorTolerance {
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t.Fatalf("hybrid root is not a central-envelope horizon intersection: %+v", point)
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}
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}
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}
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}
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func TestSolarEclipseHybridSignedEnvelopeEvents(t *testing.T) {
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for _, date := range [][3]int{{1144, 7, 3}, {1827, 10, 20}, {1854, 11, 20}, {1986, 10, 3}, {2013, 11, 3}, {2023, 4, 20}, {2164, 3, 23}, {2172, 10, 17}} {
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t.Run(fmt.Sprintf("%04d-%02d-%02d", date[0], date[1], date[2]), func(t *testing.T) {
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seed := JDECalc(date[0], date[1], float64(date[2]))
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result := SolarEclipsePartialFootprints(seed, SolarEclipsePartialFootprintOptions{StepDays: 2.0 / 1440, BoundaryPoints: 96, CentralShadowStepDays: 2.0 / 1440})
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if result.Eclipse.Type != SolarEclipseHybrid || len(result.CentralBandHorizonClosures) != 2 || len(result.CentralBandSegments) < 2 {
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t.Fatalf("type=%s closures=%d segments=%d", result.Eclipse.Type, len(result.CentralBandHorizonClosures), len(result.CentralBandSegments))
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}
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solver := newSolarEclipseSolver(CalcMoonSHByJDE(seed, 0), SolarEclipseModelNASABulletinSplitK)
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polygons := make([][]geodata.GeoPoint, len(result.CentralBandSegments))
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for i, ring := range result.CentralBandSegments {
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if len(ring) < 4 || solarEclipsePathDistanceKM(ring[0], ring[len(ring)-1]) > 0.001 {
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t.Fatal("open hybrid component")
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}
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for _, point := range ring {
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polygons[i] = append(polygons[i], geodata.GeoPoint{Longitude: point.Longitude, Latitude: point.Latitude})
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if solarEclipseCentralEnvelopePointOnHorizonClosure(point, result.CentralBandHorizonClosures) {
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continue
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}
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evaluation := solver.magnitudeEvaluationAt(point.JDE)
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first, firstOK := solarCentralBandVectorResidual(evaluation, point.Longitude, point.Latitude, 1)
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second, secondOK := solarCentralBandVectorResidual(evaluation, point.Longitude, point.Latitude, -1)
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if !firstOK || !secondOK || math.Min(math.Hypot(first[0], first[1]), math.Hypot(second[0], second[1])) > 1.01*solarEclipseCentralVectorTolerance {
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t.Fatalf("non-critical point: %+v residuals=%v,%v", point, first, second)
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}
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}
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}
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var visible []geodata.GeoPoint
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for _, footprint := range result.CentralShadowFootprints {
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context := solver.localStateContextAt(footprint.JDE)
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for _, boundary := range footprint.Boundaries {
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for i, point := range boundary {
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if i%4 != 0 {
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continue
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}
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state := context.stateAt(point.Longitude*rad, point.Latitude*rad, 0)
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if state.sunAltitudeRad > 0 && solarEclipseCentralContactGap(state) < -1e-8 {
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visible = append(visible, geodata.GeoPoint{Longitude: point.Longitude, Latitude: point.Latitude})
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}
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}
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}
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}
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contained := geodata.SphericalPolygonsContainPoints(polygons, visible)
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for i, inside := range contained {
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if !inside && !geodata.SphericalPolygonsContainPathsWithinKM(polygons, [][]geodata.GeoPoint{{visible[i], visible[i]}}, false, 0.05) {
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t.Errorf("visible central-shadow point outside envelope: %+v", visible[i])
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}
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}
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t.Logf("segments=%d visible shadow samples=%d", len(polygons), len(visible))
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})
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}
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}
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