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# interpolatingSpring(_:initialVelocity:)

An interpolating spring animation that uses a damped spring
model to produce values in the range of one to zero.

```
static func interpolatingSpring(_ spring: Spring, initialVelocity: Double = 0.0) -> Animation
```

## Discussion

These vales are used to interpolate within the `[from, to]` range
of the animated
property. Preserves velocity across overlapping animations by
adding the effects of each animation.

---

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