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

All Methods Instance Methods Abstract Methods Concrete Methods
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
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Arc
```
public Arc()
```
- Method Detail
  - 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.