Default animate easing function is linear

[pvdz]

This seems to be a regression. Either way, I think it makes more sense if the default easing function was in fact an easing function. It's currently linear.

[padolsey]

AFAICT, linear has always been the default. There is no regression. We can discuss changing the default though. What default would you recommend?

[pvdz]

Any function that actually eases, I guess. Have no preference and maybe I'm dead wrong here so I'd like others to chime in here too.

[basecode]

I wouldn't change it because, 1) "linear" is a function and 2) CSS and I guess all other libraries have linear as default.

[davidaurelio]

* {
  transition-function: default; /* cubic-bezier(0.25, 0.1, 0.25, 1) */
}

[basecode]

@davidaurelio proved me wrong. Indeed, transition-timing-function's initial value is "ease".

[padolsey]

The default CSS transition, if it is truly cubic-bezier(0.25, 0.1, 0.25, 1) looks like this: http://cubic-bezier.com/#.25,.1,.25,1

All the JS libs seem to use slightly different defaults. jQuery's default seems to be sineOut, for example.

I'm not sure which default we should use.

[davidaurelio]

Do we have a helper for cubic bezier based timing functions? cubic bezier curves depend on t (time), which is “progress on the curve”. Calculating y from x can only be done approximately. Somebody already ported the code from webkit