/// <summary>
/// Returns a directed version of the edge-id. Smaller than 0 if inverted, as-is if not inverted.
/// </summary>
/// <remarks>
/// The relationship between a regular edge id and a directed edge id:
/// - 0 -> 1 forward, -1 backward.
/// - all other id's are offset by 1 and postive when forward, negative when backward.
/// </remarks>
public static long IdDirected(this RoutingNetwork.EdgeEnumerator edge)
{
if (edge.DataInverted)
{
return(-(edge.Id + 1));
}
return(edge.Id + 1);
}
/// <summary>
/// Creates a new edge keeping the current state of the given enumerator.
/// </summary>
internal RoutingEdge(RoutingNetwork.EdgeEnumerator enumerator)
{
this.Id = enumerator.Id;
this.To = enumerator.To;
this.From = enumerator.From;
this.Data = enumerator.Data;
this.DataInverted = enumerator.DataInverted;
this.Shape = enumerator.Shape;
}
/// <summary>
/// Moves to the given directed edge-id.
/// </summary>
public static void MoveToEdge(this RoutingNetwork.EdgeEnumerator enumerator, long directedEdgeId)
{
if (directedEdgeId == 0)
{
throw new ArgumentOutOfRangeException("directedEdgeId");
}
uint edgeId;
if (directedEdgeId > 0)
{
edgeId = (uint)directedEdgeId - 1;
}
else
{
edgeId = (uint)((-directedEdgeId) - 1);
}
enumerator.MoveToEdge(edgeId);
}
/// <summary>
/// Returns a directed version of the edge-id. Smaller than 0 if inverted, as-is if not inverted.
/// </summary>
/// <remarks>
/// The relationship between a regular edge id and a directed edge id:
/// - 0 -> 1 forward, -1 backward.
/// - all other id's are offset by 1 and postive when forward, negative when backward.
/// </remarks>
public static DirectedEdgeId DirectedEdgeId(this RoutingNetwork.EdgeEnumerator enumerator)
{
return(new DirectedEdgeId(enumerator.Id, !enumerator.DataInverted));
}