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
85 lines
3.4 KiB
Go
85 lines
3.4 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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// 等值线追踪走插值星历，但每个输出点都必须满足精确星历下的食分 / contour tracing uses the
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// interpolator, yet every output point must satisfy the target magnitude under exact ephemerides.
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func TestSolarEclipseMagnitudeContoursExactAtOutputPoints(t *testing.T) {
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cases := []struct {
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name string
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year, month int
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day float64
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deltaTSeconds float64
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}{
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{"2023-04-20 hybrid", 2023, 4, 20, 0},
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{"2024-04-08 total", 2024, 4, 8, 0},
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{"2022-10-25 partial", 2022, 10, 25, 0},
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{"2027-08-02 total explicit ΔT", 2027, 8, 2, 75},
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}
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magnitudes := []float64{0.2, 0.5, 0.8}
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for _, tc := range cases {
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seed := JDCalc(tc.year, tc.month, tc.day)
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result := SolarEclipsePartialFootprints(seed, SolarEclipsePartialFootprintOptions{
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StepDays: 5.0 / 1440, BoundaryPoints: 48, MagnitudeValues: magnitudes,
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DeltaTSeconds: tc.deltaTSeconds,
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})
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solver := newSolarEclipseSolverWithOptions(solarEclipseAnchorNewMoon(seed), SolarEclipseOptions{
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RadiusModel: SolarEclipseModelNASABulletinSplitK,
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}).withDeltaTSeconds(tc.deltaTSeconds)
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if len(result.MagnitudeContours) != len(magnitudes) {
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t.Fatalf("%s: %d contours, want %d", tc.name, len(result.MagnitudeContours), len(magnitudes))
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}
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for _, contour := range result.MagnitudeContours {
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points := 0
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for _, segment := range contour.Segments {
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for _, point := range segment {
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// 端点可能由地平线或混合食分支精修得到，只检查追踪内点 / endpoints may come
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// from horizon or hybrid refinement; only traced interior points are checked.
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if point.SunAltitude < 0.05 {
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continue
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}
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state := solver.localStateContextAt(point.JDE).stateAt(point.Longitude*rad, point.Latitude*rad, 0)
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got := solarEclipseMagnitudeAtTarget(state, contour.Magnitude)
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if math.IsNaN(got) || math.Abs(got-contour.Magnitude) > 1e-6 {
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t.Fatalf("%s m=%.1f point (%.6f, %.6f) at %.8f: exact magnitude %.9f",
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tc.name, contour.Magnitude, point.Longitude, point.Latitude, point.JDE, got)
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}
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points++
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}
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}
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if points < 20 {
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t.Fatalf("%s m=%.1f: only %d interior points checked", tc.name, contour.Magnitude, points)
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}
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}
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}
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}
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// 追踪依赖的插值误差在事件 ±4 小时内远低于等值线容差 / interpolation error over ±4 h stays far below contour tolerance.
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func TestSolarEclipseLocalEphemerisAngularErrorForContours(t *testing.T) {
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center := CalcMoonSHByJDE(JDCalc(2024, 4, 8), 0)
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ephemeris := newSolarEclipseLocalEphemeris(center)
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maxArcsec := 0.0
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for step := -1440; step <= 1440; step++ {
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jde := center + float64(step)*10.0/86400
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sun, moon, ok := ephemeris.equatorialAt(jde)
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if !ok {
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t.Fatalf("interpolator rejected %+.4f d", jde-center)
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}
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wantSun, wantMoon := solarEclipseSunMoonEquatorial(jde)
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for _, pair := range [][2][3]float64{{sun, wantSun}, {moon, wantMoon}} {
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got := solarEclipseLLRToXYZ(pair[0][0], pair[0][1], pair[0][2])
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want := solarEclipseLLRToXYZ(pair[1][0], pair[1][1], pair[1][2])
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cross := [3]float64{got[1]*want[2] - got[2]*want[1], got[2]*want[0] - got[0]*want[2], got[0]*want[1] - got[1]*want[0]}
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dot := got[0]*want[0] + got[1]*want[1] + got[2]*want[2]
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arcsec := math.Atan2(math.Sqrt(cross[0]*cross[0]+cross[1]*cross[1]+cross[2]*cross[2]), dot) / rad * 3600
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maxArcsec = math.Max(maxArcsec, arcsec)
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}
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}
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if maxArcsec > 1e-3 {
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t.Fatalf("max interpolation error %.3e arcsec, want <= 1e-3", maxArcsec)
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}
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}
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