Last active
November 18, 2020 17:31
-
-
Save flunder/431b21da318907d25d8ca6c2d06b74ea to your computer and use it in GitHub Desktop.
Expo ReAnimated2 Basic animation using timing, spring etc
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import Animated, { useSharedValue, withTiming, withSpring, useAnimatedStyle, interpolate, Easing, Extrapolate } from "react-native-reanimated"; | |
import { View, Button } from "react-native"; | |
import React from "react"; | |
export default function AnimatedStyleUpdateExample(props) { | |
const randomWidth = useSharedValue(50); | |
const randomHeight = useSharedValue(50); | |
const randomColor = useSharedValue(1); | |
const animatedStyle = useAnimatedStyle(() => { | |
return { | |
width: withTiming(randomWidth.value, { duration: 500 }), | |
height: withSpring(randomHeight.value, { | |
damping: 50, // default 10 | |
mass: 10, // default 1 | |
stiffness: 300 // default 100 | |
}), | |
borderRadius: withSpring( | |
interpolate(randomColor.value, [0, 1], [0, 20], Extrapolate.CLAMP) | |
), | |
transform: [{ | |
rotateZ: withSpring(randomHeight.value, { | |
damping: 10, // default 10 | |
mass: 0.7, // default 1 | |
stiffness: 100 // default 100 | |
}), | |
}] | |
} | |
}) | |
const getNewValues = () => { | |
randomWidth.value = Math.random() * 300; | |
randomHeight.value = Math.random() * 300; | |
randomColor.value = Math.random(); | |
} | |
console.log('rendering'); | |
return ( | |
<View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}> | |
<Animated.View style={[ | |
{ height: 100, backgroundColor: 'black' }, | |
animatedStyle | |
]} /> | |
<Button | |
title="Press Me" | |
onPress={getNewValues} | |
/> | |
</View> | |
) | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment