# Inverse3DAffine

> Computes the inverse of a 3D affine matrix.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

## Inverse3DAffine(Matrix4x4, Matrix4x4)

Computes the inverse of a 3D affine matrix.

```csharp
public static bool Inverse3DAffine(Matrix4x4 input, ref Matrix4x4 result)
```

### Parameters

**** (\[Matrix4x4]\(/engine/6000.6/script-reference/unityengine/matrix4x4)): Input matrix to invert.**** (\[Matrix4x4]\(/engine/6000.6/script-reference/unityengine/matrix4x4)): The result of the inversion. Equal to the input matrix if the function fails.

### Returns

| Type                                                          | Description                                                                                                           |
| ------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | Returns true and a valid result if the function succeeds, false and a copy of the input matrix if the function fails. |

### Remarks

This function is dedicated to a non-singular matrix (typically, a transform matrix), otherwise, returns false and the result is a copy of the input matrix.

## Inverse3DAffine(Matrix4x4, Matrix4x4)

Computes the inverse of a 3D affine matrix.

```csharp
public static bool Inverse3DAffine(in Matrix4x4 input, ref Matrix4x4 result)
```

### Parameters

**** (\[Matrix4x4]\(/engine/6000.6/script-reference/unityengine/matrix4x4)): Input matrix to invert.**** (\[Matrix4x4]\(/engine/6000.6/script-reference/unityengine/matrix4x4)): The result of the inversion. Equal to the input matrix if the function fails.

### Returns

| Type                                                          | Description                                                                                                           |
| ------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | Returns true and a valid result if the function succeeds, false and a copy of the input matrix if the function fails. |

### Remarks

This function is dedicated to a non-singular matrix (typically, a transform matrix), otherwise, returns false and the result is a copy of the input matrix.