How would I customize an easing function?

Solar2D General Questions/Discussion
#1

Hi all,

I’d like to customize a few easing functions such as 

transition=easing.outBounce

 or 

transition=easing.outBack

For example, I’d like to reduce the bounce height of the easing.outBounce function.  What’s the best way to achieve this?

#2

You can code your own easings like this:

 local shakeEasing = function(currentTime, duration, startValue, targetDelta) local shakeAmplitude = amplitude local timeFactor = (duration-currentTime)/duration local scaledShake = (timeFactor\*shakeAmplitude)+1 local randomShake = math.random(scaledShake) return startValue + randomShake - scaledShake \* 0.5 end transition.to(obj , { time = 1000, x = obj.x, y = obj.y, transition = shakeEasing} )

You can find the original Robert Penner easings here:

https://github.com/EmmanuelOga/easing/blob/master/lib/easing.lua

#3

You can code your own easings like this:

 local shakeEasing = function(currentTime, duration, startValue, targetDelta) local shakeAmplitude = amplitude local timeFactor = (duration-currentTime)/duration local scaledShake = (timeFactor\*shakeAmplitude)+1 local randomShake = math.random(scaledShake) return startValue + randomShake - scaledShake \* 0.5 end transition.to(obj , { time = 1000, x = obj.x, y = obj.y, transition = shakeEasing} )

You can find the original Robert Penner easings here:

https://github.com/EmmanuelOga/easing/blob/master/lib/easing.lua