| public static Angle360 ( double d ) : double | ||
| d | double | The specified angle to restrict. |
| return | double | |
/// <summary>
/// Gets the UT for the equatorial DN.
/// </summary>
/// <returns>The equatorial DN UT.</returns>
/// <param name="o">The Orbit to calculate the UT from.</param>
public static double getEquatorialDNUT(Orbit o)
{
//TODO: Add safeguards for bad UTs, may need to be refactored to NodeManager
Vector3d DNVector = QuaternionD.AngleAxis(NodeTools.Angle360(o.LAN + 180), Planetarium.Zup.Z) * Planetarium.Zup.X;
return(o.GetUTforTrueAnomaly(o.GetTrueAnomalyOfZupVector(DNVector), 2));
}
/// <summary>
/// Gets the ejection angle of the current maneuver node.
/// </summary>
/// <returns>The ejection angle in degrees. Positive results are the angle from prograde, negative results are the angle from retrograde.</returns>
/// <param name="nodeUT">Kerbal Spece Program Universal Time.</param>
public static double getEjectionAngle(Orbit o, double nodeUT)
{
CelestialBody body = o.referenceBody;
// Calculate the angle between the node's position and the reference body's velocity at nodeUT
Vector3d prograde = body.orbit.getOrbitalVelocityAtUT(nodeUT);
Vector3d position = o.getRelativePositionAtUT(nodeUT);
double eangle = NodeTools.Angle360((Math.Atan2(prograde.y, prograde.x) - Math.Atan2(position.y, position.x)) * 180.0 / Math.PI);
// Correct to angle from retrograde if needed.
if (eangle > 180)
{
eangle = 180 - eangle;
}
return(eangle);
}
