---
title: isCumulative
framework: quartzcore
role: symbol
role_heading: Instance Property
path: quartzcore/capropertyanimation/iscumulative
---

# isCumulative

Determines if the value of the property is the value at the end of the previous repeat cycle, plus the value of the current repeat cycle.

## Declaration

```swift
var isCumulative: Bool { get set }
```

## Discussion

Discussion If true, then the value of the property is the value at the end of the previous repeat cycle, plus the value of the current repeat cycle. If false, the value of the property is simply the value calculated for the current repeat cycle. The default is false.

## See Also

### Property Value Calculation Behavior

- [isAdditive](quartzcore/capropertyanimation/isadditive.md)
- [valueFunction](quartzcore/capropertyanimation/valuefunction.md)