Easing Animation Frames
npm i easing-animation-frames
This is a tiny library for creating CPU-friendly easing animations with requestAnimationFrame API and Robert Penner's easing equations. Suggestions and pull requests for optimization are welcome.
How to use
Select an easing type (cubicInOut
by default) and pass a callback function to run for every animation frame which manipulates target DOM elements.
Minimum settings
easingAnimationFrames({
template: updateBarWidth // Callback function to run for every frame, which receives progress from 0 to 1
});
With optional settings
easingAnimationFrames({
easingType: "quadInOut", // Easing function name
duration: 3000, // Animation duration in milliseconds
template: updateBarWidth, // Callback function to run for every frame, which receives progress from 0 to 1
complete: animationComplete, // Callback funciton to run on completion
});
Duration is set to be 4,000 milliseconds by default, which you can change. Once the animation starts, the callback function (template) receives the progress value (from 0 to 1) that you can use to render the animation. The example above uses (progress * 75)
% for the width of the bar, based on the time passed.
npm start
to see the example.
The template function also provides stop
and resume
functions, if you want to stop the animation before it completes and resume it.
React Easing Animation is a React HOC implementation of this library.
Browser Support
It uses requestAnimationFrame
, which should be supported for most of the modern browsers.