public static double Length(ILucidLine line)
{
double length = 0;
foreach (var subline in line.Vertices.SlidingWindow(2))
{
length += Math.Abs(GeometryHelper.DistanceBetween(subline.First(), subline.Last()));
}
return(length);
}
public static IEnumerable <ILucidGeometry> FindNearby(IEnumerable <IPoint> referencePoints, double distance, IEnumerable <ILucidGeometry> geometries, bool recursive = false)
{
var nearbyGeometries = (from g in geometries
let nearbyVertices = from v in g.Vertices
where referencePoints.Where(p => GeometryHelper.DistanceBetween(p, v) < distance).Any()
select v
where nearbyVertices.Any()
select g);
foreach (var geometry in nearbyGeometries)
{
yield return(geometry);
}
if (recursive && nearbyGeometries.Any())
{
foreach (var nearby in FindNearby(nearbyGeometries.SelectMany(g => g.Vertices), distance, geometries.Except(nearbyGeometries), recursive))
{
yield return(nearby);
}
}
}