Pull out easing logic from tween

[TodePond]

So that it can be used in other things, like lerp

also consider different ways of providing smoothing controls - maybe separate issue though

[Magnogen]

Would you like a seperate file for handling this, like an ease.js? If you'd like I could do that and use a bit of Newton-Raphson for Cubic Béziers?

[Magnogen]

Also, I had a play with the ease() function in desmos. What do the variables like in, out and ratio represent? They don't seem to make much sense from an artistic stand point... 🤔

https://www.desmos.com/calculator/b01zpscifm

[TodePond]

This is what they do: https://todepond.gitbook.io/habitat/documentation/tween

Yes a separate ease.js or smooth.js or something like that. the key thing I'm trying to figure out is how to make it all manipulate-able - rather than just picking a named easing function, which seems like the norm in these kinds of libraries

[Magnogen]

What about allowing for a mixture between two easing functions? I.e. evaluating both of the results of a functions, and then lerping between them?

You could lerp by a constant factor, like 60% circular in + 40% sine out, or by the t value, starting at full circular, then finishing at full sine. You could ease the lerp of the easing functions!

[TodePond]

Maybe, though the thing I'm really hoping to have is:

• Don't choose an ease function
• Instead: Pick a level of continuity

(inspired by freya holmer!)

To me, standard easing functions feel similar to 'magic numbers' and I'd like to be able to reach past them to the key thing, which is a decision around how smooth something is.