public List <Node> FindNodesWithinRadius(UV location, double radius)
{
var nodes = new List <Node>();
var circle = Circle.ByCenterPointRadius(
Autodesk.DesignScript.Geometry.Point.ByCoordinates(location.U, location.V),
radius);
if (!Intersects(circle))
{
return(nodes);
}
if (IsLeafNode)
{
nodes.Add(this);
return(nodes);
}
nodes.AddRange(NW.FindNodesWithinRadius(location, radius));
nodes.AddRange(NE.FindNodesWithinRadius(location, radius));
nodes.AddRange(SW.FindNodesWithinRadius(location, radius));
nodes.AddRange(SE.FindNodesWithinRadius(location, radius));
return(nodes);
}