Length3D Property (TinTriangle)
Gets the 3D length (i.e. perimeter) of this TIN triangle. The length is in the units of the spatial reference of the TIN. See
TinDatasetDefinition.GetSpatialReference. This method must be called on the MCT. Use QueuedTask.Run.
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3.2 or higher.