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

GetTriangleNeighborhood Method
Gets all triangles whose circumscribed circle contains the specified point. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public IReadOnlyList<TinTriangle> GetTriangleNeighborhood( 
   MapPoint point
)

Parameters

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

Return Value

A IReadOnlyList of TinTriangle
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