/// <summary>
/// This function will find the closest arc from a geographical position in space using projection.
/// </summary>
/// <param name="P">point from which you want the closest arc.</param>
/// <param name="Distance">The distance to the closest arc.</param>
/// <param name="IgnorePassableProperty">if 'false', then arcs whose property Passable is set to false will not be taken into account.</param>
/// <returns>The closest arc that has been found.</returns>
public Arc ClosestArc(Point3D P, out double Distance, bool IgnorePassableProperty)
{
Arc ArcMin = null;
double DistanceMin = -1;
foreach (Arc A in LA)
{
if (IgnorePassableProperty && A.Passable == false)
{
continue;
}
Point3D Projection = Point3D.ProjectOnLine(P, A.StartNode.Position, A.EndNode.Position);
double DistanceTemp = Point3D.DistanceBetween(P, Projection);
if (DistanceMin == -1 || DistanceMin > DistanceTemp)
{
DistanceMin = DistanceTemp;
ArcMin = A;
}
}
Distance = DistanceMin;
return(ArcMin);
}
