Tween-functions

Robert Penner's tweening functions as used in React-tween-state and React-state-stream.

Penner's original functions uses the change in value rather than final value as parameter. I much prefer the latter, so this is what this library will use.

API

tweenFunction.tweenName(currentTime, beginValue, endValue, totalDuration)

Example

var tweenFunctions = require('tween-functions');
tweenFunctions.easeInQuad(1, 0, 50, 5); // => 4

List of available functions:

• linear
• easeInQuad
• easeOutQuad
• easeInOutQuad
• easeInCubic
• easeOutCubic
• easeInOutCubic
• easeInQuart
• easeOutQuart
• easeInOutQuart
• easeInQuint
• easeOutQuint
• easeInOutQuint
• easeInSine
• easeOutSine
• easeInOutSine
• easeInExpo
• easeOutExpo
• easeInOutExpo
• easeInCirc
• easeOutCirc
• easeInOutCirc
• easeInElastic
• easeOutElastic
• easeInOutElastic
• easeInBack
• easeOutBack
• easeInOutBack
• easeInBounce
• easeOutBounce
• easeInOutBounce