/// <summary>
/// Populate the loop location information for each point in the train journey.
/// </summary>
/// <param name="train">A train object containing the journey details.</param>
/// <param name="trackGeometry">The track geometry object indicating the location of the loops.</param>
public void populateLoopLocations(Train train, List <trackGeometry> trackGeometry)
{
/* Create a track geometry object. */
trackGeometry track = new trackGeometry();
int index = 0;
double trainPoint = 0;
/* Cycle through the train journey. */
foreach (TrainDetails journey in train.TrainJourney)
{
trainPoint = journey.geometryKm;
/* Find the index of the closest point on the track to the train. */
index = track.findClosestTrackGeometryPoint(trackGeometry, trainPoint);
/* Populate the loop */
journey.isLoopHere = trackGeometry[index].isLoopHere;
}
}
/// <summary>
/// Function reads in the track geometry data from file.
/// </summary>
/// <param name="filename">Full filename of teh geometry file.</param>
/// <returns>A list of track Geometry objects describing the track geometry.</returns>
public List <trackGeometry> readGeometryfile(string filename)
{
/* Create the list of track geometry objects. */
List <trackGeometry> trackGeometry = new List <trackGeometry>();
bool header = true;
/* Read all the lines of the file. */
string[] lines = System.IO.File.ReadAllLines(filename);
char[] delimeters = { ',', '\'', '"', '\t', '\n' }; // not sure of the delimter ??
/* Seperate the fields. */
string[] fields = lines[0].Split(delimeters);
bool firstPoint = true;
/* Define the track geomerty parameters. */
string geometryName = null;
double latitude = 0.0;
double longitude = 0.0;
double elevation = 0.0;
double kilometreage = 0.0;
double virtualKilometreage = 0.0;
bool isLoopHere = false;
/* Define some additional helper parameters. */
double distance = 0;
direction direction = direction.notSpecified;
double previousLat = 0;
double previousLong = 0;
double previouskm = 0;
string loop;
/* Add the trains to the list. */
foreach (string line in lines)
{
if (header)
{
/* Ignore the header line. */
header = false;
}
else
{
/* Seperate each record into each field */
fields = line.Split(delimeters);
geometryName = fields[0];
double.TryParse(fields[1], out latitude);
double.TryParse(fields[2], out longitude);
double.TryParse(fields[3], out elevation);
double.TryParse(fields[4], out kilometreage);
loop = fields[6];
if (loop.Equals("loop", StringComparison.OrdinalIgnoreCase) || loop.Equals("true", StringComparison.OrdinalIgnoreCase))
{
isLoopHere = true;
}
else
{
isLoopHere = false;
}
/* The virtual kilometreage starts at the first kilometreage of the track. */
if (firstPoint)
{
virtualKilometreage = kilometreage;
/* Set the 'pervious' parameters. */
previousLat = latitude;
previousLong = longitude;
previouskm = kilometreage;
firstPoint = false;
}
else
{
/* Determine the direction the track kilometreage. */
if (direction == direction.notSpecified)
{
if (kilometreage - previouskm > 0)
{
direction = direction.increasing;
}
else
{
direction = direction.decreasing;
}
}
/* Calcualte the distance between succesive points and increment the virtual kilometreage. */
distance = processing.calculateDistance(previousLat, previousLong, latitude, longitude);
if (direction == direction.increasing)
{
virtualKilometreage = virtualKilometreage + distance / 1000;
}
else
{
virtualKilometreage = virtualKilometreage - distance / 1000;
}
/* Set the 'previous' parameters. */
previousLat = latitude;
previousLong = longitude;
}
/* Add the geometry point to the list. */
trackGeometry geometry = new trackGeometry(0, geometryName, latitude, longitude, elevation, kilometreage, virtualKilometreage, isLoopHere);
trackGeometry.Add(geometry);
}
}
return(trackGeometry);
}
