//function for populating the database with lite snapshot data.
public void AddLineToDB()
{
foreach (ReadSnapshotFileLite.FileData SFD in RSF.Fdata)
{
VehicleDataLite TEMP = new VehicleDataLite();
TEMP.AtTime = SFD.AtTime;
TEMP.OnLink = SFD.OnLink;
TEMP.LinkDist = SFD.LinkDist;
TEMP.Vspeed = SFD.Vspeed;
TEMP.Vtype = SFD.Vtype;
TEMP.Lane = SFD.Lane;
TEMP.BornTime = SFD.BornTime;
TEMP.NextLink = SFD.NextLink;
TEMP.NextNextLink = SFD.NextNextLink;
TEMP.NextTurn = SFD.NextTurn; //null9
TEMP.NextNextTurn = SFD.NextNextTurn; //null9
//TEMP.NextNextTurn = "Null9";
PDB.VDataAddLine(TEMP.MakeDBLine());
}
}
//function for adding a stochastic line to the database
public void AddLineToDBStoch(string source, double Xsigma, double dt, double pcV)
{
//note dt is the sampling rate of the simulated positioning instrument;
double VehicleFrac = pcV / 100;//fraction of vehicles carrying sensors
double Vsigma = Math.Sqrt(2 * Math.Pow(Xsigma, 2.0) / Math.Pow(dt, 2.0));
GaussSampler Xdist = new GaussSampler(0, Xsigma);
GaussSampler Vdist = new GaussSampler(0, Vsigma);
Random FlatRan = new Random();
foreach (ReadSnapshotFileLite.FileData SFD in RSF.Fdata)
{
double dice = FlatRan.NextDouble();
if (dice > VehicleFrac)
{
continue;
}
int LaneNum = 0;
int Lane;
double LaneWidth = 0.0;
double Speed;
double Distance;
double DistError = Xdist.RandomSample();
double LatError = Xdist.RandomSample();
double Verror = Vdist.RandomSample();
EL.SearchLaneData(SFD.OnLink.StartNode, SFD.OnLink.EndNode, ref LaneNum, ref LaneWidth);
Speed = Math.Abs(SFD.Vspeed + Verror);
Distance = Math.Abs(SFD.LinkDist + DistError);
int LaneCorrection = 0;
double Jump = LaneWidth / 2;
if (LatError > Jump && LatError < 2 * Jump)
{
LaneCorrection = -1;
}
else if (-LatError > Jump && -LatError < 2 * Jump)
{
LaneCorrection = 1;
}
else if (LatError > 2 * Jump)
{
LaneCorrection = -2;
}
else if (-LatError > 2 * Jump)
{
LaneCorrection = 2;
}
Lane = SFD.Lane + LaneCorrection;
if (Lane > (LaneNum - 1))
{
Lane = LaneNum - 1;
}
else if (Lane < 0)
{
Lane = 0;
}
VehicleDataLite TEMP = new VehicleDataLite();
TEMP.Source = source;
TEMP.AtTime = SFD.AtTime;
TEMP.OnLink = SFD.OnLink;
TEMP.LinkDist = Distance;
TEMP.Vspeed = Speed;
TEMP.Vtype = SFD.Vtype;
TEMP.Lane = Lane;
TEMP.BornTime = SFD.BornTime;
TEMP.NextLink = SFD.NextLink;
TEMP.NextNextLink = SFD.NextNextLink;
TEMP.NextTurn = "NULL8";
TEMP.NextNextTurn = "NULL8";
PDB.VDataAddLine(TEMP.MakeDBLine());
}
}