Class
Common
```kotlin
public class KeyframesWithSplineSpec(public val config: KeyframesWithSplineSpecConfig) :
DurationBasedAnimationSpec
```
`KeyframesWithSplineSpec` creates a keyframe based `DurationBasedAnimationSpec` using the
Monotone cubic Hermite spline to interpolate between the values in `config`.
`KeyframesWithSplineSpec` may be used to animate any n-dimensional values, but you'll likely use
it most to animate positional 2D values such as `Offset`. For example:
You may also provide a `periodicBias` value (between 0f and 1f) to make a periodic spline.
Periodic splines adjust the initial and final velocity to be the same. This is useful to create
smooth repeatable animations. Such as an infinite pulsating animation:
The `periodicBias` value (from 0.0 to 1.0) indicates how much of the original starting and final
velocity are modified to achieve periodicity:
- 0f: Modifies only the starting velocity to match the final velocity
- 1f: Modifies only the final velocity to match the starting velocity
- 0.5f: Modifies both velocities equally, picking the average between the two
## Secondary Constructors
```kotlin
public constructor(
config: KeyframesWithSplineSpecConfig,
@FloatRange(0.0, 1.0) periodicBias: Float,
) : this(config) {
this.periodicBias = periodicBias
}
```
Constructor that returns a periodic spline implementation.
#### Parameters
| | |
| --- | --- |
| config | Keyframe configuration of the spline, should contain the set of values, timestamps and easing curves to animate through. |
| periodicBias | A value from 0f to 1f, indicating how much the starting or ending velocities are modified respectively to achieve periodicity. |