65 lines
2.4 KiB
Go
65 lines
2.4 KiB
Go
|
package geojson_test
|
||
|
|
|
||
|
|
import (
|
||
|
|
"encoding/json"
|
||
|
|
"testing"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"b612.me/astro/eclipse"
|
||
|
|
"b612.me/astro/geojson"
|
||
|
|
)
|
||
|
|
|
||
|
|
func TestMarshalSolarEclipse21640323ContainsVisibleAnnularEnds(t *testing.T) {
|
||
|
|
date := time.Date(2164, 3, 23, 0, 0, 0, 0, time.UTC)
|
||
|
|
sites := [][2]float64{{-110.6, 48.75}, {-110.6, 48.5}, {-110.7, 48.76}, {-120.575, 48.75}, {-120.575, 48.745}}
|
||
|
|
for _, site := range sites {
|
||
|
|
local, ok := eclipse.LocalSolarEclipseOnDate(date, site[0], site[1], 0)
|
||
|
|
if !ok || local.Type != eclipse.SolarEclipseAnnular || local.SunAltitude <= 0 {
|
||
|
|
t.Fatalf("reference site %v is not visible annular greatest: %+v", site, local)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
for _, step := range []time.Duration{time.Minute, 2 * time.Minute, 5 * time.Minute} {
|
||
|
|
t.Run(step.String(), func(t *testing.T) {
|
||
|
|
partial, ok := eclipse.SolarEclipsePartialFootprints(date, eclipse.SolarEclipsePartialFootprintOptions{
|
||
|
|
Step: step, BoundaryPoints: 96, CentralShadowStep: step,
|
||
|
|
MagnitudeValues: []float64{0.2, 0.4, 0.6, 0.8, 1},
|
||
|
|
})
|
||
|
|
if !ok || partial.Eclipse.Type != eclipse.SolarEclipseHybrid {
|
||
|
|
t.Fatal("expected hybrid eclipse")
|
||
|
|
}
|
||
|
|
central, ok := eclipse.SolarEclipseCentralPath(date, eclipse.SolarEclipsePathOptions{Step: step, TargetSpacingKM: 700})
|
||
|
|
if !ok {
|
||
|
|
t.Fatal("expected central path")
|
||
|
|
}
|
||
|
|
data, err := geojson.MarshalSolarEclipse(partial, ¢ral)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
band := featureWithRole(t, decodeCollection(t, data), "central-band")
|
||
|
|
for _, site := range sites {
|
||
|
|
if !geometryContainsPoint(t, band.Geometry, site[0], site[1]) {
|
||
|
|
t.Errorf("central band omits visible annular site %v", site)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
var polygons [][][][]float64
|
||
|
|
if err := json.Unmarshal(band.Geometry.Coordinates, &polygons); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
for _, polygon := range polygons {
|
||
|
|
assertSolarCentralBandRingSimpleAndSampled(t, polygon[0], 250)
|
||
|
|
}
|
||
|
|
if len(partial.CentralBandHorizonClosures) != 2 {
|
||
|
|
t.Fatalf("horizon closures=%d, want sunrise and sunset", len(partial.CentralBandHorizonClosures))
|
||
|
|
}
|
||
|
|
for _, closure := range partial.CentralBandHorizonClosures {
|
||
|
|
assertSolarPathMaximumEdgeKM(t, closure, 12)
|
||
|
|
for _, point := range closure {
|
||
|
|
if distance := geoJSONMultiPolygonBoundaryDistanceKM(polygons, []float64{point.Longitude, point.Latitude}); distance > 0.02 {
|
||
|
|
t.Fatalf("central band misses horizon closure by %.3f km", distance)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|