public static RiseTransitSetModel GetRiseTransitSet(
this CelestialObjectPositionModel celestialObjectPosition,
CelestialObjectPositionModel earthPosition,
double longitudeDegrees,
double latitudeDegrees)
{
var transitTimeSpan = celestialObjectPosition.GetTransitTimeSpan(earthPosition, longitudeDegrees);
var transit = new DateTimeOffset(
celestialObjectPosition.ReferenceDate.DateTime.Year,
celestialObjectPosition.ReferenceDate.DateTime.Month,
celestialObjectPosition.ReferenceDate.DateTime.Day,
transitTimeSpan.Hours,
transitTimeSpan.Minutes,
transitTimeSpan.Seconds,
transitTimeSpan.Milliseconds,
TimeSpan.Zero);
var hourHorizonDegrees = celestialObjectPosition.GetHourHorizon(latitudeDegrees, 0);
var hourHorizonTimeSpan = DegreeHelper.DegreeToTimeSpan(hourHorizonDegrees);
var rise = transit - hourHorizonTimeSpan;
var set = transit + hourHorizonTimeSpan;
return(new RiseTransitSetModel(rise, transit, set));
}
public void DegreeToTimeTest(double value, int expectedHours, int expectedMinutes, int expectedSeconds)
{
var actualTimeSpan = DegreeHelper.DegreeToTimeSpan(value);
Assert.Equal(expectedHours, actualTimeSpan.Hours);
Assert.Equal(expectedMinutes, actualTimeSpan.Minutes);
Assert.Equal(expectedSeconds, actualTimeSpan.Seconds);
}
public static TimeSpan GetTransitTimeSpan(
this CelestialObjectPositionModel celestialObjectPosition,
CelestialObjectPositionModel earthPosition,
double longitudeDegrees)
{
var degrees = celestialObjectPosition.GetTransitDegrees(
earthPosition,
longitudeDegrees);
return(DegreeHelper.DegreeToTimeSpan(degrees));
}
public void DegreeTimeSpanConversionTest(double value)
{
var actualTimeSpan = DegreeHelper.DegreeToTimeSpan(value);
var expectedTimeSpan = new TimeSpan((int)Math.Floor(value / 15), (int)Math.Floor(value % 15) * 4, (int)Math.Floor((value % 0.25) * 240));
Assert.Equal(expectedTimeSpan.Hours, actualTimeSpan.Hours);
Assert.Equal(expectedTimeSpan.Minutes, actualTimeSpan.Minutes);
Assert.Equal(expectedTimeSpan.Seconds, actualTimeSpan.Seconds);
var actualDegrees = DegreeHelper.TimeSpanToDegree(actualTimeSpan);
Assert.Equal(value, actualDegrees);
}
