GetNearestNode Method

In This Topic

Gets the nearest node to the specified point. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public TinNode GetNearestNode( 
   MapPoint point
)

Public Function GetNearestNode( _
   ByVal point As MapPoint _
) As TinNode

Parameters

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

Return Value

A TinNode

Exceptions

Exception	Description
System.ArgumentNullException	Point is null
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run

Remarks

To ensure maximum robustness, callers should explicitly dispose of the returned TinNode in either a using statement or a finally block.

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.

Reference

TinDataset Class
TinDataset Members

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