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# Value calculation modes

These constants are used by the [`calculationMode`](/documentation/QuartzCore/CAKeyframeAnimation/calculationMode) property.

## Topics

### Constants

[`linear`](/documentation/QuartzCore/CAAnimationCalculationMode/linear)

Simple linear calculation between keyframe values.

[`discrete`](/documentation/QuartzCore/CAAnimationCalculationMode/discrete)

Each keyframe value is used in turn, no interpolated values are calculated.

[`paced`](/documentation/QuartzCore/CAAnimationCalculationMode/paced)

Linear keyframe values are interpolated to produce an even pace throughout the animation.

[`cubic`](/documentation/QuartzCore/CAAnimationCalculationMode/cubic)

Smooth spline calculation between keyframe values.

[`cubicPaced`](/documentation/QuartzCore/CAAnimationCalculationMode/cubicPaced)

Cubic keyframe values are interpolated to produce an even pace throughout the animation.


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