---
title: simdWorldUp
framework: scenekit
role: symbol
role_heading: Instance Property
path: scenekit/scnnode/simdworldup
---

# simdWorldUp

The “up” (+Y) direction vector relative to the node, expressed in world space.

## Declaration

```swift
var simdWorldUp: simd_float3 { get }
```

## Discussion

Discussion Reading this property is equivalent to reading the simdLocalUp class property and using the simdConvertVector(_:to:) or simdConvertVector(_:from:) method to convert that vector from the node’s local coordinate space to the scene’s world coordinate space.

## See Also

### Related Documentation

- [worldUp](scenekit/scnnode/worldup.md)

### Calculating Node-Relative Transforms

- [simdLocalRight](scenekit/scnnode/simdlocalright.md)
- [simdLocalUp](scenekit/scnnode/simdlocalup.md)
- [simdLocalFront](scenekit/scnnode/simdlocalfront.md)
- [simdWorldRight](scenekit/scnnode/simdworldright.md)
- [simdWorldFront](scenekit/scnnode/simdworldfront.md)