feat: 完善水星与金星全球凌日搜索及制图导出
- 基于平均下合周期与节点相位预筛候选,减少无效星历计算;跳过无法求解的单个会合周期,避免有限覆盖星历导致搜索提前终止 - 引入影轴 γ、半影半径及地球尺度几何判定,结合站心可见性识别地心无接触、仅部分地区可见的掠凌 - 添加金星 243 年、水星 46 年周期族编号,并明确编号适用范围及未分配时的零值语义 - 为 SVG、GeoJSON 和 KML 增加站心部分凌日可见区,适配接触等时线、几何元数据、图层样式及取景;为地心无接触凌日事件增加正射图,按可见区球面面积加权居中
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@@ -19,6 +19,7 @@
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// c1-c4-visibility-regions 凌日可见性分区
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// c1-c4-horizon-boundaries 凌日 C1、C4 视地平边界
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// transit-contact-isochrones 凌日站心接触等时线
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// topocentric-transit-visibility 地心无接触时按站心求得的部分凌日可见区
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//
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// Package svg renders solar-eclipse, lunar-eclipse and Mercury/Venus transit SVG charts. Degradable layers tag the geometry
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// source they actually used in data-source, using exactly the values above.
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@@ -43,6 +44,7 @@ const (
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eclipseMapSourceTransitVisibilityRegions = "c1-c4-visibility-regions"
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eclipseMapSourceTransitHorizonBoundaries = "c1-c4-horizon-boundaries"
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eclipseMapSourceTransitContactIsochrones = "transit-contact-isochrones"
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eclipseMapSourceTransitPartialVisibility = "topocentric-transit-visibility"
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)
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// eclipseMapDataSources 是全部合法取值,测试用它封闭词表。
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@@ -64,4 +66,5 @@ var eclipseMapDataSources = []string{
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eclipseMapSourceTransitVisibilityRegions,
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eclipseMapSourceTransitHorizonBoundaries,
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eclipseMapSourceTransitContactIsochrones,
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eclipseMapSourceTransitPartialVisibility,
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}
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