# ModelImporterNormals

> Normal generation options for ModelImporter.

## Definition

* **Type:** Enum
* **Namespace:** [UnityEditor](/engine/6000.6/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public enum ModelImporterNormals
```

## Remarks

Normals can either be imported from the Model file (default), calculated by Unity, or not included in the imported Mesh at all. Vertex normals are most often used for real-time lighting.

Additional Resources: [ModelImporter.importNormals](/engine/6000.6/script-reference/unityeditor/modelimporter/importnormals.md), importBlendshapeNormals, [ModelImporterTangents](/engine/6000.6/script-reference/unityeditor/modelimportertangents.md), [Mesh.normals](/engine/6000.6/script-reference/unityengine/mesh/normals.md).

## Fields

| Value                                                                                      | Description                                      |
| ------------------------------------------------------------------------------------------ | ------------------------------------------------ |
| [Calculate](/engine/6000.6/script-reference/unityeditor/modelimporternormals/calculate.md) | Calculate vertex normals.                        |
| [Import](/engine/6000.6/script-reference/unityeditor/modelimporternormals/import.md)       | Import vertex normals from model file (default). |
| [None](/engine/6000.6/script-reference/unityeditor/modelimporternormals/none.md)           | Do not import vertex normals.                    |