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# simdTransform

The transform applied to the node relative to its parent. Animatable.

```
var simdTransform: simd_float4x4 { get set }
```

## Discussion

The transform is the combination of the node’s [`simdRotation`](/documentation/SceneKit/SCNNode/simdRotation), [`simdPosition`](/documentation/SceneKit/SCNNode/simdPosition), and [`simdScale`](/documentation/SceneKit/SCNNode/simdScale) properties. The default transform is the identity matrix.

When you set the value of this property, the node’s [`simdRotation`](/documentation/SceneKit/SCNNode/simdRotation), [`simdOrientation`](/documentation/SceneKit/SCNNode/simdOrientation), [`simdEulerAngles`](/documentation/SceneKit/SCNNode/simdEulerAngles), [`simdPosition`](/documentation/SceneKit/SCNNode/simdPosition), and [`simdScale`](/documentation/SceneKit/SCNNode/simdScale) properties automatically change to match the new transform, and vice versa. SceneKit can perform this conversion only if the transform you provide is a combination of rotation, translation, and scale operations. If you set the value of this property to a skew transform or to a nonaffine transform, the values of these properties become undefined. Setting a new value for any of these properties causes SceneKit to compute a new transform, discarding any skew or nonaffine operations in the original transform.

You can animate changes to this property’s value. See [Animating SceneKit Content](/documentation/SceneKit/animating-scenekit-content).

## See Also

[`transform`](/documentation/SceneKit/SCNNode/transform)

The transform applied to the node relative to its parent. Animatable.


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