---
title: bias
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/clothplaneshape/bias
---

# bias

The distance by which the surface of the plane shape is displaced along the direction of its normal.

## Declaration

```swift
var bias: Float
```

## Discussion

Discussion This can be used to extend a plane collider slightly above its visual counterpart in order to avoid z-fighting.