---
title: UITimingCurveType.builtin
framework: uikit
role: symbol
role_heading: Case
path: uikit/uitimingcurvetype/builtin
---

# UITimingCurveType.builtin

Use the built-in UIKit timing curves. Specify this value when you want to use one of the constants in the UIView.AnimationCurve type. Specify the desired curve using the cubicTimingParameters property.

## Declaration

```swift
case builtin
```

## See Also

### Constants

- [UITimingCurveType.cubic](uikit/uitimingcurvetype/cubic.md)
- [UITimingCurveType.spring](uikit/uitimingcurvetype/spring.md)
- [UITimingCurveType.composed](uikit/uitimingcurvetype/composed.md)