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rotulus

v1.0.0

Published

minimal wheel/scroll based animator for react

Downloads

5

Readme

📜 Rotulus

Minimal wheel/scroll based animator for React

Installation

npm install rotulus

Usage

function SimpleAnimation() {
  return (
    <WheelAnimationProvider max={1000}>
      <MovingText />
    </WheelAnimationProvider>
  )
}

function MovingText() {
  const moveAnimation = [
    {
      start: 0, // start value
      end: 500, // end value
      startFrame: 0, // start frame
      endFrame: 1000, // end frame
      type: 'translateY', // property to animate
      unit: 'px', // unit for property
    },
  ]
  return (
    <WheelAnimationComponent animations={moveAnimation}>
      Scroll to see this text move!
    </WheelAnimationComponent>
  )
}

How it works

Rotulus uses React's Context API internally.

  1. WheelAnimationProvider tracks the wheel progress by listening to browser's wheel event
  2. WheelAnimationComponent registers a callback to the provider's context on mount (The callback contains the logic to update property on each frame)
  3. WheelAnimationProvider runs the callback on each frame (by using requestAnimationFrame) thus synchronizing every WheelAnimationComponent to wheel progress that is in the Provider

It's as simple as that!

Contribute

Any kind of feedback is welcome!