---
title: "CubicBezierEasing"
description: "A cubic polynomial easing.

The [CubicBezierEasing] class implements third-order Bézier curves.

This is equivalent to the Android `PathInterpolator` when a single cubic Bézier curve is
specified.

Note: [CubicBezierEasing] instances are stateless and can be used concurrently from multiple
threads.

Rather than creating a new instance, consider using one of the common cubic [Easing]s:"
type: "class"
---

<div class='type'>Class</div>


<a id='references'></a>

<div class='sourceset sourceset-common'>Common</div>


```kotlin
public class CubicBezierEasing(
    private val a: Float,
    private val b: Float,
    private val c: Float,
    private val d: Float,
) : Easing
```


A cubic polynomial easing.

The `CubicBezierEasing` class implements third-order Bézier curves.

This is equivalent to the Android `PathInterpolator` when a single cubic Bézier curve is
specified.

Note: `CubicBezierEasing` instances are stateless and can be used concurrently from multiple
threads.

Rather than creating a new instance, consider using one of the common cubic `Easing`s:

#### Parameters

| | |
| --- | --- |
| a | The x coordinate of the first control point. The line through the point (0, 0) and the first control point is tangent to the easing at the point (0, 0). |
| b | The y coordinate of the first control point. The line through the point (0, 0) and the first control point is tangent to the easing at the point (0, 0). |
| c | The x coordinate of the second control point. The line through the point (1, 1) and the second control point is tangent to the easing at the point (1, 1). |
| d | The y coordinate of the second control point. The line through the point (1, 1) and the second control point is tangent to the easing at the point (1, 1). |