feat: 完善时标与天象几何计算并扩展输出接口
- 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
This commit is contained in:
+147
-1
@@ -4,9 +4,11 @@ import (
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"encoding/json"
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"fmt"
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"math"
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"strings"
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"testing"
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"time"
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"b612.me/astro"
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"b612.me/astro/eclipse"
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"b612.me/astro/geojson"
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"b612.me/astro/internal/geodata"
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@@ -1186,7 +1188,9 @@ func TestMarshalLunarEclipseUsesRequestedBoundarySampling(t *testing.T) {
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t.Fatalf("MarshalLunarEclipse: %v", err)
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}
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collection := decodeCollection(t, data)
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assertRoles(t, collection, "visible-at-p1", "visible-at-p4", "p1-horizon", "p4-horizon", "greatest")
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assertRoles(t, collection, "visible-at-p1", "visible-at-p4",
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"p1-horizon", "p4-horizon", "visible-during-eclipse",
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"visible-throughout-eclipse", "greatest")
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assertCollectionCoordinates(t, collection)
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visible := featureWithRole(t, collection, "visible-at-p1")
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if got := visible.Properties["boundary_points"]; got != float64(24) {
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@@ -1207,6 +1211,119 @@ func TestMarshalLunarEclipseUsesRequestedBoundarySampling(t *testing.T) {
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}
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}
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func TestMarshalLunarEclipseWithOptions(t *testing.T) {
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date := time.Date(2029, 1, 1, 12, 0, 0, 0, time.FixedZone("CST", 8*3600))
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info, ok := eclipse.LunarEclipseOnDate(date)
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if !ok {
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t.Fatal("missing lunar eclipse")
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}
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defaultData, err := geojson.MarshalLunarEclipse(info, 360)
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if err != nil {
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t.Fatal(err)
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}
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skippedData, err := geojson.MarshalLunarEclipseWithOptions(info, 360, geojson.LunarEclipseOptions{
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SkipRoles: []string{"visible-during-eclipse", "visible-throughout-eclipse"},
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})
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if err != nil {
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t.Fatal(err)
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}
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skipped := decodeCollection(t, skippedData)
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assertRoles(t, skipped, "visible-at-p1", "visible-at-p4", "p1-horizon", "p4-horizon", "greatest")
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for _, role := range []string{"visible-during-eclipse", "visible-throughout-eclipse"} {
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if len(featuresWithRole(skipped, role)) != 0 {
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t.Fatalf("skipped role %s is still present", role)
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}
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}
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// 跳过包络不得改变其余要素的几何。
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band := featureWithRole(t, skipped, "visible-at-p1")
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expected := featureWithRole(t, decodeCollection(t, defaultData), "visible-at-p1")
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if got, want := string(band.Geometry.Coordinates), string(expected.Geometry.Coordinates); got != want {
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t.Fatal("skipping the envelopes changed the P1 hemisphere")
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}
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// 只跳过一块包络时另一块照常输出，而且不再为被跳过的那块成环。
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partialData, err := geojson.MarshalLunarEclipseWithOptions(info, 360, geojson.LunarEclipseOptions{
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SkipRoles: []string{"visible-throughout-eclipse"},
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})
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if err != nil {
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t.Fatal(err)
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}
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partial := decodeCollection(t, partialData)
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assertRoles(t, partial, "visible-at-p1", "visible-during-eclipse")
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if len(featuresWithRole(partial, "visible-throughout-eclipse")) != 0 {
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t.Fatal("skipped envelope role is still present")
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}
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coarseData, err := geojson.MarshalLunarEclipseWithOptions(info, 360, geojson.LunarEclipseOptions{
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EnvelopeLongitudePoints: 180,
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EnvelopeSweepSamples: 16,
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})
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if err != nil {
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t.Fatal(err)
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}
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coarse := decodeCollection(t, coarseData)
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for _, role := range []string{"visible-during-eclipse", "visible-throughout-eclipse"} {
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feature := featureWithRole(t, coarse, role)
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if got := feature.Properties["longitude_points"]; got != float64(180) {
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t.Fatalf("%s longitude_points=%v, want 180", role, got)
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}
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assertClosedMultiPolygon(t, feature)
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}
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if _, err := geojson.MarshalLunarEclipseWithOptions(info, 360, geojson.LunarEclipseOptions{
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SkipRoles: []string{
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"visible-at-p1", "visible-at-p4", "visible-during-eclipse", "visible-throughout-eclipse",
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"penumbra-moonset", "penumbra-moonrise",
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"p1-horizon", "p4-horizon", "greatest",
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},
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}); err == nil {
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t.Fatal("dropping every Feature must fail")
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}
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// 采样档位取值：0 或负值等于默认（逐字节相同），正值收敛到上下限。
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for _, samples := range []int{-5, 0} {
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data, err := geojson.MarshalLunarEclipseWithOptions(info, 360, geojson.LunarEclipseOptions{EnvelopeSweepSamples: samples})
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if err != nil {
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t.Fatal(err)
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}
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if string(data) != string(defaultData) {
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t.Fatalf("EnvelopeSweepSamples=%d 应当与默认输出相同", samples)
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}
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}
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for _, points := range []int{-5, 0} {
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data, err := geojson.MarshalLunarEclipseWithOptions(info, 360, geojson.LunarEclipseOptions{EnvelopeLongitudePoints: points})
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if err != nil {
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t.Fatal(err)
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}
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if string(data) != string(defaultData) {
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t.Fatalf("EnvelopeLongitudePoints=%d 应当与默认输出相同", points)
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}
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}
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for _, testCase := range []struct {
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points int
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want float64
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}{{1, 12}, {100000, 720}} {
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data, err := geojson.MarshalLunarEclipseWithOptions(info, 360, geojson.LunarEclipseOptions{EnvelopeLongitudePoints: testCase.points})
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if err != nil {
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t.Fatal(err)
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}
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collection := decodeCollection(t, data)
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for _, role := range []string{"visible-during-eclipse", "visible-throughout-eclipse"} {
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if got := featureWithRole(t, collection, role).Properties["longitude_points"]; got != testCase.want {
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t.Fatalf("EnvelopeLongitudePoints=%d 的 %s longitude_points=%v，期望 %v", testCase.points, role, got, testCase.want)
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}
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}
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}
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clampedData, err := geojson.MarshalLunarEclipseWithOptions(info, 360, geojson.LunarEclipseOptions{EnvelopeSweepSamples: 1})
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if err != nil {
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t.Fatal(err)
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}
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clamped := decodeCollection(t, clampedData)
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for _, role := range []string{"visible-during-eclipse", "visible-throughout-eclipse"} {
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assertClosedMultiPolygon(t, featureWithRole(t, clamped, role))
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}
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}
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func TestMarshalLunarEclipseWithTimeMarkers(t *testing.T) {
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info, ok := eclipse.LunarEclipseOnDate(time.Date(2026, time.March, 3, 0, 0, 0, 0, time.UTC))
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if !ok {
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@@ -2883,3 +3000,32 @@ func sampleFootprint(at time.Time, west, south, east, north float64) moon.Planet
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}},
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}
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}
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// UT1 导出：时间字符串写 UT1 时刻、集合上带 time_scale 成员，且拒绝非 UTC 时区。
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func TestMarshalSolarEclipseUT1TimeScale(t *testing.T) {
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date := time.Date(2024, time.April, 8, 0, 0, 0, 0, time.UTC)
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partial, ok := eclipse.SolarEclipsePartialFootprintsNASABulletinSplitK(date, eclipse.SolarEclipsePartialFootprintOptions{
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Step: 10 * time.Minute, BoundaryPoints: 24,
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})
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if !ok {
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t.Fatal("缺少日食足迹")
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}
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utcData, err := geojson.MarshalSolarEclipse(partial, nil)
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if err != nil {
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t.Fatalf("UTC 导出失败: %v", err)
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}
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if strings.Contains(string(utcData), "time_scale") {
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t.Error("UTC 导出不应带 time_scale 成员")
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}
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ut1Data, err := geojson.MarshalSolarEclipseWithTimeMarkers(partial, nil, geojson.TimeMarkerOptions{TimeScale: astro.TimeScaleUT1})
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if err != nil {
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t.Fatalf("UT1 导出失败: %v", err)
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}
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if !strings.Contains(string(ut1Data), `"time_scale":"UT1"`) {
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t.Errorf("UT1 导出应带 time_scale 成员: %s", string(ut1Data)[:200])
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}
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cst := time.FixedZone("CST", 8*3600)
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if _, err := geojson.MarshalSolarEclipseWithTimeMarkers(partial, nil, geojson.TimeMarkerOptions{TimeScale: astro.TimeScaleUT1, Location: cst}); err == nil {
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t.Error("UT1 配非 UTC 时区应报错")
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}
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}
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