private static IEnumerable <bool> ComputeTrajectoryIncrement()
{
// create or update aerodynamic model
if (aerodynamicModel_ == null || !aerodynamicModel_.IsValidFor(Trajectories.AttachedVessel.mainBody))
{
aerodynamicModel_ = AerodynamicModelFactory.GetModel(Trajectories.AttachedVessel.mainBody);
}
else
{
aerodynamicModel_.IncrementalUpdate();
}
// create new VesselState from vessel, or null if it's on the ground
VesselState state = Trajectories.AttachedVessel.LandedOrSplashed ? null : new VesselState(Trajectories.AttachedVessel);
// iterate over patches until MaxPatchCount is reached
for (int patchIdx = 0; patchIdx < Settings.MaxPatchCount; ++patchIdx)
{
// stop if we don't have a vessel state
if (state == null)
{
break;
}
// If we spent more time in this calculation than allowed, pause until the next frame
if (incrementTime_.ElapsedMilliseconds > MaxIncrementTime)
{
yield return(false);
}
// if we have a patched conics solver, check for maneuver nodes
if (null != Trajectories.AttachedVessel.patchedConicSolver)
{
// search through maneuver nodes of the vessel
List <ManeuverNode> maneuverNodes = Trajectories.AttachedVessel.patchedConicSolver.maneuverNodes;
foreach (ManeuverNode node in maneuverNodes)
{
// if the maneuver node time corresponds to the end time of the last patch
if (node.UT == state.Time)
{
// add the velocity change of the burn to the velocity of the last patch
state.Velocity += node.GetBurnVector(CreateOrbitFromState(state));
break;
}
}
// Add one patch, then pause execution after every patch
foreach (bool result in AddPatch(state))
{
yield return(false);
}
}
state = AddPatch_outState;
}
}
internal void ComputeTrajectory()
{
if (!VesselHasParts)// || AttachedVessel.LandedOrSplashed)
{
increment_time = 0d;
Patches.Clear();
return;
}
try
{
// start of trajectory calculation in current frame
increment_time = Util.Clocks;
// create or update aerodynamic model
if (aerodynamicModel_ == null || !aerodynamicModel_.IsValidFor(AttachedVessel.mainBody))
{
aerodynamicModel_ = AerodynamicModelFactory.GetModel(this, AttachedVessel.mainBody);
}
else
{
aerodynamicModel_.UpdateVesselMass();
}
// if there is no ongoing partial computation, start a new one
if (partialComputation_ == null)
{
//total_time = Util.Clocks;
// restart the public buffers
patchesBackBuffer_.Clear();
maxAccelBackBuffer_ = 0;
// Create enumerator for Trajectory increment calculator
partialComputation_ = ComputeTrajectoryIncrement().GetEnumerator();
}
// we are finished when there are no more partial computations to be done
bool finished = !partialComputation_.MoveNext();
// when calculation is finished,
if (finished)
{
// swap the buffers for the patches and the maximum acceleration,
// "publishing" the results
List <Patch> tmp = Patches;
Patches = patchesBackBuffer_;
patchesBackBuffer_ = tmp;
MaxAccel = maxAccelBackBuffer_;
// Reset partial computation
partialComputation_.Dispose();
partialComputation_ = null;
// how long did the whole calculation take?
//total_time = Util.ElapsedMilliseconds(total_time);
}
// how long did the calculation in this frame take?
increment_time = Util.ElapsedMilliseconds(increment_time);
}
catch (Exception)
{
++ErrorCount;
throw;
}
}
