---
title: "RotaryInjectionScope"
description: "The receiver scope of rotary input injection lambda from [performRotaryScrollInput].

A rotary event can be sent with [rotateToScrollVertically] or [rotateToScrollHorizontally]. All
events sent by these methods are batched together and sent as a whole after
[performRotaryScrollInput] has executed its code block.

Example of performing a scroll with three events:"
type: "interface"
---

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


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

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



```kotlin
interface RotaryInjectionScope : InjectionScope
```


The receiver scope of rotary input injection lambda from `performRotaryScrollInput`.

A rotary event can be sent with `rotateToScrollVertically` or `rotateToScrollHorizontally`. All
events sent by these methods are batched together and sent as a whole after
`performRotaryScrollInput` has executed its code block.

Example of performing a scroll with three events:


## Functions

```kotlin
fun rotateToScrollHorizontally(horizontalScrollPixels: Float)
```


Sends a scroll event that represents a rotation that will result in a scroll distance of
`horizontalScrollPixels`. The event will be sent at the current event time. Positive
`horizontalScrollPixels` values will correspond to rotating the scroll wheel clockwise,
negative values correspond to rotating the scroll wheel anticlockwise.

#### Parameters

| | |
| --- | --- |
| horizontalScrollPixels | The amount of scroll, in pixels |



```kotlin
fun rotateToScrollVertically(verticalScrollPixels: Float)
```


Sends a scroll event that represents a rotation that will result in a scroll distance of
`verticalScrollPixels`. The event will be sent at the current event time. Positive
`verticalScrollPixels` values will correspond to rotating the scroll wheel clockwise,
negative values correspond to rotating the scroll wheel anticlockwise.

#### Parameters

| | |
| --- | --- |
| verticalScrollPixels | The amount of scroll, in pixels |




## Code Examples

### rotaryInputScroll
```kotlin
fun rotaryInputScroll() {
    composeTestRule.onNodeWithTag("myComponent").performRotaryScrollInput {
        rotateToScrollVertically(3.0f)
        rotateToScrollVertically(10.0f)
        rotateToScrollVertically(2.0f)
    }
}
```