ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Data.Analyst3D Namespace / TinDataset Class / GetNaturalNeighbors Method
Point location. This will be projected into the spatial reference of the TIN dataset.
Example Version

GetNaturalNeighbors Method
Gets the set of nodes that are the natural neighbors of the specified point. The natural neighbors of a point are the nodes it would connect with to form triangles if it were inserted in the triangulation. They are the closest surrounding nodes in all directions. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public IReadOnlyList<TinNode> GetNaturalNeighbors( 
   MapPoint point
)

Parameters

point
Point location. This will be projected into the spatial reference of the TIN dataset.

Return Value

A IReadOnlyList of TinNode
Exceptions
ExceptionDescription
Point is null
This method or property must be called within the lambda passed to QueuedTask.Run
Example
Access TIN Elements by MapPoint
// "identify" the closest node, edge, triangle
using (var nearestNode = tinDataset.GetNearestNode(mapPoint))
{
}

using (var nearestEdge = tinDataset.GetNearestEdge(mapPoint))
{
}
using (var triangle = tinDataset.GetTriangleByPoint(mapPoint))
{

}

// get the set of natural neighbours 
// (set of nodes that "mapPoint" would connect with to form triangles if it was added to the TIN)
IReadOnlyList<ArcGIS.Core.Data.Analyst3D.TinNode> naturalNeighbors = tinDataset.GetNaturalNeighbors(mapPoint);

// get the set of triangles whose circumscribed circle contains "mapPoint" 
IReadOnlyList<ArcGIS.Core.Data.Analyst3D.TinTriangle> triangles = tinDataset.GetTriangleNeighborhood(mapPoint);
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.2 or higher.
See Also