---
title: simdRotation
framework: scenekit
role: symbol
role_heading: Instance Property
path: scenekit/scnnode/simdrotation
---

# simdRotation

The node’s orientation, expressed as a rotation angle about an axis. Animatable.

## Declaration

```swift
var simdRotation: simd_float4 { get set }
```

## Discussion

Discussion The four-component rotation vector specifies the direction of the rotation axis in the first three components and the angle of rotation (in radians) in the fourth. The default rotation is the zero vector, specifying no rotation. Rotation is applied relative to the node’s simdPivot property. The simdRotation, simdEulerAngles, and simdOrientation properties all affect the rotational aspect of the node’s simdTransform property. Any change to one of these properties is reflected in the others. You can animate changes to this property’s value. See Animating SceneKit Content.

## See Also

### Related Documentation

- [rotation](scenekit/scnnode/rotation.md)

### Managing the Node’s Transform

- [simdTransform](scenekit/scnnode/simdtransform.md)
- [simdPosition](scenekit/scnnode/simdposition.md)
- [simdEulerAngles](scenekit/scnnode/simdeulerangles.md)
- [simdOrientation](scenekit/scnnode/simdorientation.md)
- [simdScale](scenekit/scnnode/simdscale.md)
- [simdPivot](scenekit/scnnode/simdpivot.md)