/// <summary>
/// Recalculate CurrentTransition value.
/// </summary>
public void CalculateTransitionState()
{
var refs = GetBodiesReferences();
if (refs.Attractor != null)
{
Vector3d startPoint = GetPositionAtGivenTime(refs.Origin, (StartTimeOffset), refs.OriginAttractorsChain);
Vector3d endPoint = GetPositionAtGivenTime(refs.Target, (StartTimeOffset + TargetDuration), refs.TargetAttractorsChain);
var attractorPosHalf = refs.Attractor.position;
var attractorPos = new Vector3d(attractorPosHalf.x, attractorPosHalf.y, attractorPosHalf.z);
var hyperbola = new HyperbolaData(new Vector3d(startPoint.x, startPoint.y, startPoint.z), endPoint, attractorPos);
var trajectory = CalcTransitionTrajectory(
startPoint,
endPoint,
attractorPos,
hyperbola,
this.TargetDuration,
isReverseOrbit: this.IsTransitionPassBehindAttractor,
attrMass: refs.AttractorMass,
g: refs.GConst,
precision: this.TargetDurationPrecision,
semiMajorAxisUpperLimit: this.MaxTransitionSemiMajorAxis);
if (trajectory.orbit != null && trajectory.orbit.IsValidOrbit && trajectory.Duration > 0 && !double.IsInfinity(trajectory.Duration))
{
var velocityDiff = CalculateVelocityDifference(refs.Origin, refs.Target, trajectory.orbit, StartTimeOffset, trajectory.Duration, trajectory.EccAnomStart, trajectory.EccAnomEnd);
var totalDeltaV = 0.0;
for (int i = 0; i < velocityDiff.Count; i++)
{
totalDeltaV += velocityDiff[i].magnitude;
}
_currentTransition = new TransitionOrbitData()
{
Attractor = refs.Attractor,
Duration = (float)trajectory.Duration,
EccAnomalyStart = (float)trajectory.EccAnomStart,
EccAnomalyEnd = (float)trajectory.EccAnomEnd,
ImpulseDifferences = velocityDiff,
Orbit = trajectory.orbit,
TotalDeltaV = (float)totalDeltaV,
};
}
else
{
_currentTransition = null;
}
}
else
{
_currentTransition = null;
}
}
private void GizmosDrawSingleTransition(TransitionOrbitData transition)
{
Gizmos.color = Color.green;
int steps = 50;
float delta = transition.EccAnomalyEnd - transition.EccAnomalyStart;
Vector3 lastPoint = (Vector3)transition.Orbit.GetFocalPositionAtEccentricAnomaly(transition.EccAnomalyStart);
Vector3 point = lastPoint;
for (int i = 1; i <= steps; i++)
{
var ratio = i / (float)steps;
point = (Vector3)transition.Orbit.GetFocalPositionAtEccentricAnomaly(transition.EccAnomalyStart + delta * ratio);
Gizmos.DrawLine(transition.Attractor.position + lastPoint, transition.Attractor.position + point);
lastPoint = point;
}
}
private void GizmosDrawSingleTransition(TransitionOrbitData transition)
{
Gizmos.color = Color.green;
int steps = 50;
float delta = transition.EccAnomalyEnd - transition.EccAnomalyStart;
var lastPoint = transition.Orbit.GetFocalPositionAtEccentricAnomaly(transition.EccAnomalyStart);
var point = lastPoint;
for (int i = 1; i <= steps; i++)
{
var ratio = i / (float)steps;
point = transition.Orbit.GetFocalPositionAtEccentricAnomaly(transition.EccAnomalyStart + delta * ratio);
var attractorPos = transition.Attractor.position;
Gizmos.DrawLine(
attractorPos + new Vector3((float)lastPoint.x, (float)lastPoint.y, (float)lastPoint.z),
attractorPos + new Vector3((float)point.x, (float)point.y, (float)point.z));
lastPoint = point;
}
}
