## Geometry.EvaluateNormals

### Introduced

v5.0

### Description

Evaluates the normals at the surface locations defined by the point locator data. The returned normals are in geometry's local space reference.
In the case of PolygonMesh, various computation methods are available.
An example using this method can be found in PointLocatorData object's description.

### C# Syntax

    Object Geometry.EvaluateNormals( PointLocatorData in_pPtLocators, Int32 in_ComputationMethod, Object in_pPointLocatorsIndices );

### Scripting Syntax

    oArray = Geometry.EvaluateNormals( PointLocators, [ComputationMethod], [Indices] );

### Return Value

2-dimensional Array, (the first dimension contains the x,y,z values).

### Parameters

Parameter | Type | Description
--- | --- | ---
PointLocators | PointLocatorData | Point locators to be evaluated.
ComputationMethod | siNormalComputationMethod | Normals computation method. Default Value: siInterpolatedVertexGeometricNormals
Indices | 1-dimensional Array | Indices of the point locators to be evaluated (all in not specified).

### See Also

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