Package org.insa.graphs.model

Class Arc

java.lang.Object
org.insa.graphs.model.Arc
public abstract class Arc
extends java.lang.Object

Interface representing an arc in the graph. Arc is an interface and not a class to allow us to represent two-ways roads in a memory efficient manner (without having to duplicate attributes).

Arc should never be created manually but always using the Node.linkNodes(Node, Node, float, RoadInformation, java.util.ArrayList) method to ensure proper instantiation of the ArcForward and ArcBackward classes.

  • Constructor Summary

    Constructors 
    Constructor Description
    Arc()  

  • Method Summary

    Modifier and Type Method Description
    abstract Node getDestination()  
    abstract float getLength()  
    double getMinimumTravelTime()
    Compute and return the minimum time required to travel this arc, or the time required to travel this arc at the maximum speed allowed.
    abstract Node getOrigin()  
    abstract java.util.List<Point> getPoints()  
    abstract RoadInformation getRoadInformation()  
    double getTravelTime​(double speed)
    Compute the time required to travel this arc if moving at the given speed.

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Arc

      public Arc()

  • Method Details

    • getOrigin

      public abstract Node getOrigin()
      Returns:
      Origin node of this arc.

    • getDestination

      public abstract Node getDestination()
      Returns:
      Destination node of this arc.

    • getLength

      public abstract float getLength()
      Returns:
      Length of this arc, in meters.

    • getTravelTime

      public double getTravelTime​(double speed)
      Compute the time required to travel this arc if moving at the given speed.
      Parameters:
      speed - Speed to compute the travel time.
      Returns:
      Time (in seconds) required to travel this arc at the given speed (in kilometers-per-hour).

    • getMinimumTravelTime

      public double getMinimumTravelTime()
      Compute and return the minimum time required to travel this arc, or the time required to travel this arc at the maximum speed allowed.
      Returns:
      Minimum time required to travel this arc, in seconds.
      See Also:
      getTravelTime(double)

    • getRoadInformation

      public abstract RoadInformation getRoadInformation()
      Returns:
      Road information for this arc.

    • getPoints

      public abstract java.util.List<Point> getPoints()
      Returns:
      Points representing segments of this arc.