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〰️ parallax all the things in React VR
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README.md

wobbly
wobbly logo

〰️ parallax all the things in react-vr


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wobbly 〰️ manages the state needed to calculate x, y rotations for a parallax effect, allowing you to focus the UI, and apply the effect how/where you want.. It uses the function as child and “prop getter” patterns, which gives you maximum flexibility with a minimal API.

Table of Contents

Installation

This module is distributed via npm which is bundled with node and should be installed as one of your project’s dependencies:


npm install --save wobbly

This package also depends on react-vr and react. Please make sure you have those installed as well.

Usage

import Wobbly from 'wobbly';
import { Text, View, VrButton, Animated } from 'react-vr';

function ParallaxButton() {
  return (
    <Wobbly
      // These props control how extreme wobbly 〰 is. Default to -15, 15 respectively.
      parallaxDegreeLowerBound={-20}
      parallaxDegreeUpperBound={20}
      // The render prop is called on each render providing prop getters and state to be used in your UI.
      // This function can alternatively be called as a child prop <Wobbly>{(stateAndHelpers) => {...}}</Wobbly>
      render={({ getMoveTargetProps, getWobblyTransformStyle }) => (
        <Animated.VrButton
          // NOTE: The element you spread the transformation style into must be an "Animated" element.
          style={{
            backgroundColor: 'darkorchid',
            padding: 0.2,
            borderRadius: 0.03,
            // Spread the transform styles into an element you want to make wobbly 〰
            // This adds rotateX and a rotateY objects respectively
            transform: [...getWobblyTransformStyle()],
          }}
          // Spread the wrapper props into an element whose onMove event will control the parallax effect.
          // You can also pass an onMove/onExit handler to be called before wobbly's internal onMove/onExit.
          // ...getMoveTargetProps({ onMove: (event) => {}})
          {...getMoveTargetProps()}
        >
          <Text
            style={{
              fontSize: 0.3,
              color: 'blanchedalmond',
            }}
          >
            Wobbly
          </Text>
        </Animated.VrButton>
      )}
    />
  );
}

…creates something like this:
wobbly button example

Props

See the API Docs for information on the props exposed by this package. The usage example above is not an exhaustive list.

How To Render

wobbly 〰️ uses the child callback render function pattern. This is where you render whatever you want to based on the state of wobbly which is passed to the callback as parameters. The function is passed as the child prop of the Wobbly component:

<Wobbly>
  {({/* parameters here */}) => (/* your render code here*/)}
</Wobbly>

or can be called from the render prop

<Wobbly
  render= {({/* parameters here */}) => (/* your render code here*/)}
/>

The paramters of this function can be split into two categories: State and Prop Getters.

See the API Docs for a list of these properties.

Examples

Check out the demo site to see how wobbly 〰️ works in VR. See the demo repo for the code behind the demo site.

Contributing

If you’d like to make wobbly 〰️ better, please read our guide to contributing.

These wonderful people have contributed to wobbly 〰️ in one way or another:

Contributors
Luke Herrington

License

wobbly is MIT licensed.

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