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
91 lines
3.1 KiB
Go
91 lines
3.1 KiB
Go
package svg
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import (
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"testing"
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"time"
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"b612.me/astro/moon"
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)
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// 本文件钉住紧凑掩带合并缓存的契约：同输入复用只读结果、不同几何不会串味、产物逐字节确定。
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func occultationTestCompactSweep(t *testing.T) occultationFootprintSweep {
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t.Helper()
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path := occultationTestSaturnPath(t)
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if len(path.PartialBandFootprints) == 0 {
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t.Fatal("fixture carries no compact band footprints")
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}
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return occultationFootprintSweep{
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footprints: path.PartialBandFootprints,
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contours: path.PartialBandContours,
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visibilityContours: path.PartialVisibilityContours,
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northern: path.NorthernLimit,
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southern: path.SouthernLimit,
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curves: path.RiseSetCurves,
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compactBand: true,
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kind: partialOccultationFootprintSweep,
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}
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}
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func TestOccultationBandCacheReusesIdenticalGeometry(t *testing.T) {
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sweep := occultationTestCompactSweep(t)
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first, firstAuthoritative, err := sweep.mergedBandPolygons()
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if err != nil {
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t.Fatalf("first mergedBandPolygons() error = %v", err)
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}
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if len(first) == 0 {
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t.Fatal("compact band merge produced no polygon")
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}
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second, secondAuthoritative, err := sweep.mergedBandPolygons()
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if err != nil {
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t.Fatalf("second mergedBandPolygons() error = %v", err)
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}
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if len(second) != len(first) || &second[0][0] != &first[0][0] {
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t.Fatal("identical band geometry was merged again instead of reusing the cached polygons")
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}
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if secondAuthoritative != firstAuthoritative {
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t.Fatalf("cached authoritative flag = %v, want %v", secondAuthoritative, firstAuthoritative)
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}
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}
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func TestOccultationBandCacheSeparatesDifferentGeometry(t *testing.T) {
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sweep := occultationTestCompactSweep(t)
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first, _, err := sweep.mergedBandPolygons()
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if err != nil {
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t.Fatalf("first mergedBandPolygons() error = %v", err)
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}
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mutated := sweep
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mutated.footprints = append([]moon.PlanetOccultationFootprint(nil), sweep.footprints...)
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last := len(mutated.footprints) - 1
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mutated.footprints[last].Polygons = append([][]moon.OccultationPathPoint(nil), mutated.footprints[last].Polygons...)
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polygon := append([]moon.OccultationPathPoint(nil), mutated.footprints[last].Polygons[0]...)
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polygon[0].Longitude += 1.5
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mutated.footprints[last].Polygons[0] = polygon
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second, _, err := mutated.mergedBandPolygons()
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if err != nil {
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t.Fatalf("mutated mergedBandPolygons() error = %v", err)
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}
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if len(second) > 0 && len(first) > 0 && &second[0][0] == &first[0][0] {
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t.Fatal("a shifted footprint reused the cached band polygons")
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}
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}
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func TestCompactBandRenderIsDeterministic(t *testing.T) {
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path := occultationTestSaturnPath(t)
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options := StarOccultationSVGOptions{Width: 1200, Height: 800, Location: time.UTC}
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first, err := PlanetOccultationPathSVG(path, options)
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if err != nil {
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t.Fatalf("first render: %v", err)
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}
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second, err := PlanetOccultationPathSVG(path, options)
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if err != nil {
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t.Fatalf("second render: %v", err)
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}
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if first != second {
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t.Fatal("compact-band SVG changed between renders after the merge was cached")
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}
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if len(first) == 0 {
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t.Fatal("compact-band render is empty")
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}
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}
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