---
title: jointWeights
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/skeletonresource/blendmask/jointweights
---

# jointWeights

Dictionary of joint weights keyed by joint name. Each weight corresponds to a joint in the skeleton, controlling how much that joint is affected by animations using this mask. Values range from 0.0 (no effect) to 1.0 (full effect). Joints not present in the dictionary are treated as having weight 1.0 (full animation effect).

## Declaration

```swift
var jointWeights: [String : Float]
```

## See Also

### Accessing mask values

- [id](realitykit/skeletonresource/blendmask/id.md)