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
65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
package geojson_test
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import (
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"encoding/json"
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"fmt"
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"time"
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"b612.me/astro/eclipse"
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"b612.me/astro/geojson"
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)
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func ExampleMarshalSolarEclipse() {
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date := time.Date(2024, time.April, 8, 0, 0, 0, 0, time.UTC)
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partial, ok := eclipse.SolarEclipsePartialFootprints(
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date,
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eclipse.SolarEclipsePartialFootprintOptions{
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Step: 10 * time.Minute,
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BoundaryPoints: 180,
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},
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)
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if !ok {
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return
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}
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central, hasCentral := eclipse.SolarEclipseCentralPath(
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date,
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eclipse.SolarEclipsePathOptions{
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Step: time.Minute,
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TargetSpacingKM: 20,
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},
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)
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var centralPath *eclipse.SolarEclipsePath
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if hasCentral {
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centralPath = ¢ral
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}
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data, err := geojson.MarshalSolarEclipse(partial, centralPath)
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fmt.Println(err == nil, json.Valid(data))
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// Output: true true
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}
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func ExampleMarshalSolarEclipseWithTimeMarkers() {
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date := time.Date(2024, time.April, 8, 0, 0, 0, 0, time.UTC)
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partial, ok := eclipse.SolarEclipsePartialFootprints(
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date,
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eclipse.SolarEclipsePartialFootprintOptions{Step: 20 * time.Minute, BoundaryPoints: 36},
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)
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if !ok {
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return
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}
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central, ok := eclipse.SolarEclipseCentralPath(
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date,
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eclipse.SolarEclipsePathOptions{Step: 5 * time.Minute},
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)
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if !ok {
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return
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}
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data, err := geojson.MarshalSolarEclipseWithTimeMarkers(
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partial,
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¢ral,
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geojson.TimeMarkerOptions{Step: 30 * time.Minute, Location: time.FixedZone("CST", 8*60*60)},
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)
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fmt.Println(err == nil, json.Valid(data))
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// Output: true true
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}
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