protected override void OnTimeChanged()
{
int years = this.Time.UniversalTime.Year - 2000;
Angle ra = Angle.FromHours(this.RightAscension) + Angle.FromHours(0, 0, this.RightAscensionProperMotion * years);
Angle dec = Angle.FromDegrees(this.Declination) + Angle.FromDegrees(0, 0, this.DeclinationProperMotion * years);
this.EquatorialCoordinate = new EquatorialCoordinate(ra, dec);
base.OnTimeChanged();
}
public void Initialize()
{
foreach (Connector connector in this.Connectors)
{
FindStar(connector.From).IsConnectedInConstellation = true;
FindStar(connector.To).IsConnectedInConstellation = true;
}
// The following calculation is solely for positioning the name
// of the constellation relative to its contents.
// First determine if the constellation crosses the 0° right ascension line
int numLessThan8Hours = 0;
int numGreaterThan16Hours = 0;
foreach (Star star in this.Stars)
{
if (star.RightAscension < 8)
{
numLessThan8Hours += 1;
}
else if (star.RightAscension > 16)
{
numGreaterThan16Hours += 1;
}
}
bool straddles = numLessThan8Hours > 0 && numGreaterThan16Hours > 0;
bool countAll = this.Connectors.Count == 0;
int count = 0;
double rightAscensionTotal = 0;
double declinationTotal = 0;
foreach (Star star in this.Stars)
{
if (countAll || star.IsConnectedInConstellation)
{
count += 1;
rightAscensionTotal += star.RightAscension - (straddles && star.RightAscension > 16 ? 24 : 0);
declinationTotal += star.Declination;
}
}
this.EquatorialCoordinate = new EquatorialCoordinate(Angle.FromHours(rightAscensionTotal / count), Angle.FromDegrees(declinationTotal / count));
}
