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
71 lines
2.7 KiB
Go
71 lines
2.7 KiB
Go
package svg
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import (
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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/basic"
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)
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// 详细版式组合图必须把摘要、穿影示意图与世界可见性底图放在同一页，并带日月地心坐标块与三栏面板。
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func TestLunarEclipseDetailedSVGCombinesBothCharts(t *testing.T) {
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date := time.Date(2025, time.March, 14, 0, 0, 0, 0, time.UTC)
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for _, language := range []string{"zh", "en"} {
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rendered, ok := LunarEclipseDetailedSVG(date, LunarEclipseDetailedSVGOptions{
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Language: language, Location: time.UTC,
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})
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if !ok {
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t.Fatalf("%s: missing chart", language)
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}
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shared := []string{
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`class="lunar-geocentric-block"`, // 日月地心坐标块
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`class="lunar-detailed-panel"`, // 历时/接触/……面板
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`class="lunar-scale-bar"`, // 弧分比例尺
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`class="lunar-visibility-regions"`, // 可见性区域
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`class="entire-eclipse-region"`, // 全程可见区
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`<path class="land"`, // 陆地底图
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}
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// 底图图例按语言取词。
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if language == "en" {
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shared = append(shared, "Entire eclipse", "Moonrise during eclipse", "Not visible")
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} else {
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shared = append(shared, "全程可见", "带食月出", "带食月落", "不可见")
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}
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for _, want := range shared {
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if !strings.Contains(rendered, want) {
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t.Fatalf("%s: combined chart missing %q", language, want)
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}
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}
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if err := validateEclipseMapXML(rendered); err != nil {
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t.Fatalf("%s: chart is not valid XML: %v", language, err)
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}
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}
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}
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// 地影几何要与 NASA 月食图逐项吻合：2009 之外的 2025-03-14 全食，Gamma 0.3481、P./U. Radius 1.1899/0.6537。
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func TestLunarEclipseShadowGeometryMatchesNASABulletin(t *testing.T) {
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date := time.Date(2025, time.March, 14, 0, 0, 0, 0, time.UTC)
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result := basic.LunarEclipse(basic.TD2UT(basic.Date2JDE(date), true))
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geometry := basic.LunarEclipseShadowGeometryAt(result.Maximum)
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t.Logf("gamma=%.4f P.Radius=%.4f U.Radius=%.4f umbral=%.4f penumbral=%.4f",
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geometry.Gamma, geometry.PenumbralRadiusDegrees, geometry.UmbralRadiusDegrees,
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result.Magnitude, result.PenumbralMagnitude)
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if math.Abs(geometry.Gamma-0.3481) > 0.001 {
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t.Fatalf("gamma = %.4f, want 0.3481", geometry.Gamma)
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}
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if math.Abs(geometry.PenumbralRadiusDegrees-1.1899) > 0.001 {
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t.Fatalf("penumbral radius = %.4f, want 1.1899", geometry.PenumbralRadiusDegrees)
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}
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if math.Abs(geometry.UmbralRadiusDegrees-0.6537) > 0.001 {
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t.Fatalf("umbral radius = %.4f, want 0.6537", geometry.UmbralRadiusDegrees)
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}
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if math.Abs(result.Magnitude-1.1784) > 0.001 {
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t.Fatalf("umbral magnitude = %.4f, want 1.1784", result.Magnitude)
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}
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if math.Abs(result.PenumbralMagnitude-2.2595) > 0.001 {
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t.Fatalf("penumbral magnitude = %.4f, want 2.2595", result.PenumbralMagnitude)
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}
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}
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