public static double OrbitInterceptTime(string direction, Mission mission)
{
var targetInc = mission.Inclination.Value;
var targetLan = mission.Lan.Value;
if (direction == "nearest")
{
var timeToNorth = OrbitInterceptTime("north", mission);
var timeToSouth = OrbitInterceptTime("south", mission);
if (timeToSouth < timeToNorth)
{
mission.Direction = "south";
return(timeToSouth);
}
mission.Direction = "north";
return(timeToNorth);
}
CurrentNode = NodeVector(targetInc, direction);
var targetNode = Rodrigues(
SolarPrimeVector(Connection.Connection.SpaceCenter().ActiveVessel.Orbit.Body.ReferenceFrame),
new Vector3d(0, 1, 0),
-targetLan
);
var nodeDelta = CurrentNode.AngleTo(targetNode);
var deltaDir = new Vector3d().Multiply(targetNode.Cross(CurrentNode));
if (deltaDir < 0)
{
nodeDelta = 360 - nodeDelta;
}
return(Connection.Connection.SpaceCenter().ActiveVessel.Orbit.Body.RotationalPeriod *
nodeDelta / 360);
}