# Sandbox.Bitmap.HeightmapToNormalMap

```csharp
Bitmap HeightmapToNormalMap(float strength = 1)
```

Converts a heightmap to a normal map using parallel processing.

### Parameters

- `strength` (`float`), default `1`: The strength of the normal map effect (default is 1.0).

### Returns

`Bitmap`: The generated normal map as an SKBitmap.

Declared in [Sandbox.Bitmap](/api/Sandbox.Bitmap).
Assembly: `Sandbox.Engine`.