b612
9ee2163cc7
- 新增月掩恒星和行星：支持搜索、掩甚点、全球掩带及固定地点轨迹计算 - 支持恒星星表坐标转换、有限盘面行星接触事件和月掩 SVG 输出 - 新增日月食及月掩全球投影图、时间标记和 GeoJSON 地理数据接口 - 扩展日食中心线、南北界及偏食足迹采样，支持极区投影 - 修正站心时角、月出月落、月球视半径、折射和恒星自行计算 - 优化内外行星事件搜索、边界选择、极端输入处理和计算稳定性
29 lines
1.2 KiB
Go
29 lines
1.2 KiB
Go
package svg
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import "b612.me/astro/internal/svgmap"
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// MapProjection 控制全球月掩地图使用的投影。
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// 零值根据事件几何自动选择投影。
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// MapProjection controls the projection used by a global occultation map.
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// The zero value selects a projection from the event geometry.
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type MapProjection string
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const (
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// MapProjectionAuto 根据事件几何自动选择投影。
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// MapProjectionAuto selects a projection from event geometry.
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MapProjectionAuto MapProjection = ""
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// MapProjectionEquirectangular 使用等经纬投影。
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// MapProjectionEquirectangular uses the equirectangular projection.
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MapProjectionEquirectangular MapProjection = "equirectangular"
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// MapProjectionNorthPolar 使用北极方位等距投影。
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// MapProjectionNorthPolar uses the north-polar azimuthal equidistant projection.
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MapProjectionNorthPolar MapProjection = "north-polar"
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// MapProjectionSouthPolar 使用南极方位等距投影。
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// MapProjectionSouthPolar uses the south-polar azimuthal equidistant projection.
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MapProjectionSouthPolar MapProjection = "south-polar"
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)
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func internalMapProjection(value MapProjection) svgmap.Projection {
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return svgmap.Projection(value)
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}
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