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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

About

Robert Penner's easing functions, slightly modified

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