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react-ui-animate
Advanced tools
Readme
React library for gestures and animation
Install with npm:
npm i react-ui-animate
or Install with yarn:
yarn add react-ui-animate
react-ui-animate
provides lots of easy to use APIs to create smooth animations and gestures.
import { AnimatedBlock, useAnimatedValue } from "react-ui-animate";
export default function () {
const opacity = useAnimatedValue(0); // It initializes opacity object with value 0.
return (
<div>
{/* AnimatedBlock component can read useAnimatedValue() */}
<AnimatedBlock
style={{
opacity: opacity.value, // using opacity with value property
width: 100,
padding: 20,
background: "#39F",
}}
>
ANIMATED
</AnimatedBlock>
{/* Assigning value to 1 auto animates from initialized value 0 to 1 smoothly */}
<button onClick={() => (opacity.value = 1)}>Animate Me</button>
</div>
);
}
Animates opacity from 0 to 1.
useAnimatedValue()
useAnimatedValue()
is very flexible and powerful hook that lets you define animated values. It accepts a value and returns a node with same value on value
property. Whenever value
property is assigned to another value, it auto animates from one value to another.
const opacity = useAnimatedValue(0); // initialize with 0 opacity
...
style={{
opacity: opacity.value // access with `.value`
}}
...
...
onClick={() => opacity.value = 1} // Assignment
...
AnimatedBlock
AnimatedBlock
is a div
component which can accept the animation node from useAnimatedValue()
hook.
const width = useAnimatedValue(100);
<AnimatedBlock
style={{
width: width.value,
height: 100,
backgroundColor: "#39f",
}}
/>;
interpolate
The interpolate()
function allows animated node value to map from input ranges to different output ranges. By default, it will extrapolate the curve beyond the ranges given, but you can also have it clamp the output value.
import { useAnimatedValue, AnimatedBlock, interpolate } from "react-ui-animate";
const width = useAnimatedValue(100);
<AnimatedBlock
style={{
width: width.value,
height: 100,
backgroundColor: interpolate(width.value, [100, 200], ["red", "blue"]),
}}
/>;
backgroundColor
is interpolated from input range [100, 200]
to output range ["red", "blue"]
. So, when the width changes from 100 to 200, backgroundColor
will change from red
to blue
.
The official documentation are now published at http://react-ui-animate.js.org/
MIT
FAQs
React library for gestures and animation
The npm package react-ui-animate receives a total of 117 weekly downloads. As such, react-ui-animate popularity was classified as not popular.
We found that react-ui-animate demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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