## PolygonMesh.GetTriangleVertexIndexArray

### Introduced

v5.0

### Description

Returns the vertex indices of the polygon subtriangle on which the point locators are defined.
Each vertex index triplet is guaranteed to correspond to one polygon (the one returned by PolygonMesh.GetPolygonIndexArray). The barycentric position within the triangle can be queried with PolygonMesh.GetTriangleWeightArray.
Warning: This information may in some cases vary between geometry instances having the same topology but different deformations. Since the point locators are defining a precise position on the surface, and since deformations can dynamically change the triangulation within a polygon, it can happen that a point locator is remapped to a different subtriangle (both barycentric weights and subtriangle indices can vary).
An example using this method can be found in PolygonMesh.GetPolygonIndexArray and Geometry.GetClosestLocations methods' description.

### C# Syntax

    Object PolygonMesh.GetTriangleVertexIndexArray( PointLocatorData in_pPtLocators, Object in_pPointLocatorsIndices );

### Scripting Syntax

    oArray = PolygonMesh.GetTriangleVertexIndexArray( PointLocators, [Indices] );

### Return Value

2-dimensional Array of index triplets

### Parameters

Parameter | Type | Description
--- | --- | ---
PointLocators | PointLocatorData | Point locators to be described.
Indices | 1-dimensional Array | Indices of the point locators to be described (all in not specified).

### See Also

PointLocatorData Geometry Geometry.GetClosestLocations Geometry.GetClosestLocationsWithinRadius Geometry.GetRaycastIntersections Geometry.SetupPointLocatorQueries Geometry.GetSurfacePointLocatorsFromPoints Geometry.EvaluatePositions Geometry.EvaluateNormals Geometry.EvaluateClusterProperty PolygonMesh.GetPolygonIndexArray PolygonMesh.GetTriangleNodeIndexArray PolygonMesh.GetTriangleWeightArray PolygonMesh.ConstructPointLocators NurbsSurfaceMesh.GetSubSurfaceIndexArray NurbsSurfaceMesh.GetNormalizedUVArray NurbsSurfaceMesh.ConstructPointLocators