# easing\_equation.h<a name="EN-US_TOPIC_0000001054479529"></a>

-   [Overview](#section1673206706165627)
-   [Summary](#section1394278806165627)
-   [Data Structures](#nested-classes)
-   [Typedefs](#typedef-members)

## **Overview**<a name="section1673206706165627"></a>

**Related Modules:**

[Graphic](graphic.md)

**Description:**

Defines the attributes and functions of the animation easing module. 

**Since:**

1.0

**Version:**

1.0

## **Summary**<a name="section1394278806165627"></a>

## Data Structures<a name="nested-classes"></a>

<a name="table1218318795165627"></a>
<table><thead align="left"><tr id="row186963595165627"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p880061348165627"><a name="p880061348165627"></a><a name="p880061348165627"></a>Data Structure Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p1672685377165627"><a name="p1672685377165627"></a><a name="p1672685377165627"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row927598628165627"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1666464597165627"><a name="p1666464597165627"></a><a name="p1666464597165627"></a><a href="ohos-easingequation.md">OHOS::EasingEquation</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p316329739165627"><a name="p316329739165627"></a><a name="p316329739165627"></a>Defines functions for specifying the velocity of an animation. </p>
</td>
</tr>
</tbody>
</table>

## Typedefs<a name="typedef-members"></a>

<a name="table1235195683165627"></a>
<table><thead align="left"><tr id="row1761412586165627"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p694346852165627"><a name="p694346852165627"></a><a name="p694346852165627"></a>Typedef Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p2105602587165627"><a name="p2105602587165627"></a><a name="p2105602587165627"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row1464876019165627"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p364712356165627"><a name="p364712356165627"></a><a name="p364712356165627"></a><a href="graphic.md#gaf04c41bb7b151a6e8be2012cc9e6475b">OHOS::EasingFunc</a>) (int16_t startPos, int16_t endPos, uint16_t curTime, uint16_t durationTime)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p2135352320165627"><a name="p2135352320165627"></a><a name="p2135352320165627"></a>typedef int16_t(* </p>
<p id="p1929740199165627"><a name="p1929740199165627"></a><a name="p1929740199165627"></a>Calculates the value for the current time of an animation. </p>
</td>
</tr>
</tbody>
</table>