/// <summary>
/// Constructs an instance of ExtendedCalculator. By constructing
/// an object of type ExtendedCalculator, you automatically initiate
/// the calculation of a path between two points, according to a given
/// planning mode (shortest, quickest, etc.).
/// </summary>
public ExtendedCalculator(double range, Battery battery,
int fromID, int toID)
{
LocationCtr locCtr = new LocationCtr();
this.From = locCtr.FindLocation(fromID);
this.To = locCtr.FindLocation(toID);
Console.WriteLine("[DEBUG MESSAGE]: ExtendedCalculator() Start ");
// Initializes graph field along with Distance and Path properties.
// Finds the most compatible locations based on the given coordinates
// and initializes the From and To properties with the existing locations.
InitializeCalculator(range, 10, 5, 10, 5);
// Initialize the graph used for calculating the path
// TODO: Implement planningMode. batteryType irrelevant here, it's not used?
GenerateGraph("plan", battery.BatteryType);
try
{
CalculatePath(From, To);
}
catch (Exception e)
{
Console.WriteLine("[DEBUG MESSAGE]: Error occured in CalculatePath(): {0}", e.Message);
}
Console.WriteLine("[DEBUG MESSAGE]: ExtendedCalculator() End");
}
public string GetMapRouteUrl(List<int> routePath)
{
string mapUrl = "http://www.google.com/maps/dir/";
LocationCtr locationCtr = new LocationCtr();
List<Location> routeLocations = routePath.Select(i => locationCtr.FindLocation(i)).ToList();
foreach (var i in routeLocations)
{
mapUrl += i.Latitude.ToString().Replace(',', '.') + "," + i.Longitude.ToString().Replace(',', '.') + "/";
}
return mapUrl;
}
public Route PlanRoute(int fromID, int toID, int batteryID)
{
LocationCtr locationCtr = new LocationCtr();
this.From = locationCtr.FindLocation(fromID);
this.To = locationCtr.FindLocation(toID);
To.GeoCoordinate.Longitude = To.Longitude;
To.GeoCoordinate.Latitude = To.Latitude;
GenerateGraph();
this.queue = new PriorityQueue(graph.Count());
route.Range = new BatteryCtr().CalculateRange(batteryID);
route.Path = CalculatePath();
route.Distance = GetDistanceList(route.Path);
return route;
}
public Route PlanRoute(int fromID, int toID, int batteryID)
{
BatteryCtr batteryCtr = new BatteryCtr();
LocationCtr locationCtr = new LocationCtr();
this.From = locationCtr.FindLocation(fromID);
this.To = locationCtr.FindLocation(toID);
// Initialize graph
GenerateGraph();
// Calculate distance the vehicle can travel before recharging
route.Range = batteryCtr.CalculateRange(batteryID);
// Determine shortest path using Dijsktras Shortest Path Algorithm
route.Path = CalculatePath();
route.Distance = GetDistanceList(route.Path);
return route;
}
private void GenerateGraph(string planningMode, BatteryType batteryType)
{
Console.WriteLine("[DEBUG MESSAGE]: GenerateGraph() Start");
LocationCtr locationCtr = new LocationCtr();
// Get all locations, filter for type 3 (BatteryStation)
// l => l.Type == 3 (Return l where l.type is equal to 3)
List<Location> locations = locationCtr.GetAllLocations().FindAll(l => l.Type == 3);
List<Connection> connections = locationCtr.GetAllConnections();
// Iterate over the location collection, add these to the graph.
foreach (Location l in locations)
{
this.graph.AddLocation(l);
}
// Iterate over the connection collection, add these to the graph
// including start vertex, end vertex and edge weight.
foreach (Connection c in connections)
{
//TODO Uncomment
//this.graph.AddConnection(c.From, c.To, c.Distance);
}
Console.WriteLine("[DEBUG MESSAGE]: GenerateGraph() End");
}
private Location GetClosestNodeToDest()
{
Console.WriteLine("[DEBUG MESSAGE]: GetClosestNodeToDest() Start");
Location foundLocation = null;
LocationCtr locationCtr = new LocationCtr();
// Get all locations from database, filter them using List<T>.FindAll(...) method.
List<Location> allLocations = locationCtr.GetAllLocations().FindAll(l => l.Type == 3);
// Set the currently shortest distance to Dest to positive infinity.
this.MinDistanceToDest = Double.PositiveInfinity;
// Iterate over the filtered collection, finding the closest matching location.
foreach (Location l in allLocations)
{
// It's necessary to copy information regarding latitude and longitude
// to their GeoCoordinate siblings. GeoCoordinate is not represented in
// the database.
l.GeoCoordinate.Latitude = l.Latitude;
l.GeoCoordinate.Longitude = l.Longitude;
// Get the euclidian distance from current location to original start point
double fromStart = l.GetDistanceToKM(Start.GeoCoordinate);
// Get the euclidian distance from current location to original end point
double toDest = l.GetDistanceToKM(Dest.GeoCoordinate);
// IF, the distance from the original start point to the current location is less than or
// equal to the original distance
// AND the distance to the original endpoint is closer than previous locations
// THEN proceed.
if (fromStart <= this.FinalStraightLine && this.MinDistanceToDest > toDest)
{
foundLocation = l;
this.MinDistanceToDest = fromStart;
}
}
Console.WriteLine("[DEBUG MESSAGE]: GetClosestNodeToDest() End");
return foundLocation;
}
private Battery FindBatteryForReservation(int i, List<int> path, int batteryTypeID, int indexOfLastBatteryShift)
{
Battery foundBattery = null;
BatteryStation bs;
int j = 1;
// A battery has not been found, and a stepback does not exceed a previous battery shift
while (foundBattery == null && j < i && j < i - indexOfLastBatteryShift)
{
bs = new LocationCtr().FindBatteryStation(path.ElementAt(i - j));
// Check for battery in the batterystation list of batteries
foundBattery = bs.Batteries
.Where(b => b.BatteryTypeID == batteryTypeID)
.FirstOrDefault(b => b.IsReserved == false);
j++;
}
return foundBattery;
}
/// <summary>
/// Generates the graph with all locations and connections.
/// The connections are added to the adjacents list on the location.
/// </summary>
private void GenerateGraph()
{
LocationCtr locationCtr = new LocationCtr();
List<Location> locations = locationCtr.GetAllLocations();
List<Connection> connections = locationCtr.GetAllConnections();
foreach (Location l in locations)
{
l.GeoCoordinate.Longitude = l.Longitude;
l.GeoCoordinate.Latitude = l.Latitude;
this.graph.AddLocation(l);
}
foreach (Connection c in connections)
{
this.graph.AddConnection(c.From, c.To, c.Distance);
}
}
