b612
16c62a97d5
- 新增时标、ΔT 模型、质心时间与 UT1 支持 - 改进日月食、月掩、行星事件及路径边界计算 - 完善恒星三维自行与动态距离传播 - 扩展 SVG、GeoJSON、KML 输出与底层距离换算工具 - 整理中英文手册、示例资源及回归测试
63 lines
2.5 KiB
Go
63 lines
2.5 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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)
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func TestSolarEclipseTotalEnvelopeHorizonEndpoints(t *testing.T) {
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for _, date := range [][3]int{
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{2003, 11, 23}, {2021, 12, 4}, {2039, 12, 15},
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{2008, 8, 1}, {2024, 4, 8}, {2026, 8, 12},
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} {
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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 := JDCalc(date[0], date[1], float64(date[2]))
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result := SolarEclipsePartialFootprints(seed, SolarEclipsePartialFootprintOptions{
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StepDays: 2.0 / 1440, BoundaryPoints: 96, MagnitudeValues: []float64{1},
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})
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if result.Eclipse.Type != SolarEclipseTotal || len(result.CentralBandSegments) != 1 ||
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len(result.CentralBandHorizonClosures) != 2 {
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t.Fatalf("type=%s rings=%d closures=%d, want total with a continuous closed envelope",
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result.Eclipse.Type, len(result.CentralBandSegments), len(result.CentralBandHorizonClosures))
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}
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if len(result.MagnitudeContours) != 1 || len(result.MagnitudeContours[0].Segments) != 2 {
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t.Fatal("missing totality branches")
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}
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ring := result.CentralBandSegments[0]
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if len(ring) < 4 || ring[0] != ring[len(ring)-1] {
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t.Fatal("totality envelope is not closed")
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}
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solver := newSolarEclipseSolver(CalcMoonSHByJDE(seed, 0), SolarEclipseModelNASABulletinSplitK)
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for i, point := range ring {
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if i > 0 && solarEclipsePathDistanceKM(ring[i-1], point) > solarEclipseTotalEnvelopeTargetSpacingKM+1e-6 {
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t.Fatalf("edge %d exceeds spacing limit", i)
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}
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if solarEclipseCentralEnvelopePointOnHorizonClosure(point, result.CentralBandHorizonClosures) {
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continue
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}
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residual, ok := solver.magnitudeHorizonResidual(point.JDE, point.Longitude, point.Latitude, 1)
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if !ok || math.Abs(residual[0]) > 1e-7 || math.Abs(residual[1]) > 1e-8 || point.SunAltitude < -1e-5 {
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t.Fatalf("point %d is not on visible totality envelope: %v altitude=%g", i, residual, point.SunAltitude)
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}
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}
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for _, branch := range result.MagnitudeContours[0].Segments {
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for _, endpoint := range []SolarEclipsePathPoint{branch[0], branch[len(branch)-1]} {
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if !solarEclipseCentralEnvelopePointOnHorizonClosure(endpoint, result.CentralBandHorizonClosures) {
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t.Fatal("totality endpoint is not shared with a horizon closure")
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}
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}
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}
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})
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}
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}
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func BenchmarkSolarEclipsePolarTotalBand(b *testing.B) {
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seed := JDCalc(2003, 11, 23)
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for i := 0; i < b.N; i++ {
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SolarEclipsePartialFootprints(seed, SolarEclipsePartialFootprintOptions{
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StepDays: 2.0 / 1440, BoundaryPoints: 96, DisableRiseSetCurves: true,
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})
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}
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}
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