public static AgcTuple rodrigues(AgcTuple inVector, AgcTuple axis, double angle)
{
axis = AgcMath.normalize(axis);
var outVector = inVector * Math.Cos(angle);
outVector += AgcMath.cross(axis, inVector) * Math.Sin(angle);
outVector += axis * AgcMath.dot(axis, inVector) * (1 - Math.Cos(angle));
return(outVector);
}
public static double orbitInterceptTime(string direction)
{
var targetInc = Globals.MissionData.Inclination;
var targetLan = Globals.MissionData.Lan;
if (direction == "nearest")
{
var timeToNortherly = orbitInterceptTime("north");
var timeToSoutherly = orbitInterceptTime("south");
double time;
if (timeToSoutherly < timeToNortherly)
{
Globals.MissionData.Direction = "south";
time = timeToSoutherly;
}
else
{
Globals.MissionData.Direction = "north";
time = timeToNortherly;
}
return(time);
}
Globals.CurrentNode = nodeVector(targetInc, direction);
AgcTuple targetNode = rodrigues(Globals.VehicleData.getSolarPrimeVector(), new AgcTuple(0, 1, 0), -targetLan);
var nodeDelta = AgcMath.angle(Globals.CurrentNode, targetNode);
var deltaDir = AgcMath.dot(new AgcTuple(0, 1, 0), AgcMath.cross(targetNode, Globals.CurrentNode));
if (deltaDir < 0)
{
nodeDelta = 360 - nodeDelta;
}
var deltatime = Globals.KrpConnection.SpaceCenter().ActiveVessel.Orbit.Body.RotationalPeriod *
nodeDelta / 360;
return(deltatime);
}
