moar eases

[matthewlein]

Hi there,

I love this project and I'd like to add my Penner easing approximations from Ceaser.

They will add 1.3k. Do you want it as part of the main $.cssEase object, or as a plugin/snippet with $.cssEase[easeName]?

[rstacruz]

What eases are they?

[matthewlein]

(took from a LESS file, but they are the same)

@easeInCubic : cubic-bezier(0.550, 0.055, 0.675, 0.190);
@easeOutCubic : cubic-bezier(0.215, 0.610, 0.355, 1.000);
@easeInOutCubic : cubic-bezier(0.645, 0.045, 0.355, 1.000);

// Circ
@easeincirc : cubic-bezier(0.600, 0.040, 0.980, 0.335);
@easeOutCirc : cubic-bezier(0.075, 0.820, 0.165, 1.000);
@easeInOutCirc : cubic-bezier(0.785, 0.135, 0.150, 0.860);

// Expo
@easeInExpo : cubic-bezier(0.950, 0.050, 0.795, 0.035);
@easeOutExpo : cubic-bezier(0.190, 1.000, 0.220, 1.000);
@easeInOutExpo : cubic-bezier(1.000, 0.000, 0.000, 1.000);

// Quad
@easeInQuad : cubic-bezier(0.550, 0.085, 0.680, 0.530);
@easeOutQuad : cubic-bezier(0.250, 0.460, 0.450, 0.940);
@easeInOutQuad : cubic-bezier(0.455, 0.030, 0.515, 0.955);

// Quart
@easeInQuart : cubic-bezier(0.895, 0.030, 0.685, 0.220);
@easeOutQuart : cubic-bezier(0.165, 0.840, 0.440, 1.000);
@easeInOutQuart : cubic-bezier(0.770, 0.000, 0.175, 1.000);

// Quint
@easeInQuint : cubic-bezier(0.755, 0.050, 0.855, 0.060);
@easeOutQuint : cubic-bezier(0.230, 1.000, 0.320, 1.000);
@easeInOutQuint : cubic-bezier(0.860, 0.000, 0.070, 1.000);

// Sine
@easeInSine : cubic-bezier(0.470, 0.000, 0.745, 0.715);
@easeOutSine : cubic-bezier(0.390, 0.575, 0.565, 1.000);
@easeInOutSine : cubic-bezier(0.445, 0.050, 0.550, 0.950);

// Back
@easeInBack : cubic-bezier(0.600, -0.280, 0.735, 0.045);
@easeOutBack : cubic-bezier(0.175, 0.885, 0.320, 1.275);
@easeInOutBack : cubic-bezier(0.680, -0.550, 0.265, 1.550);

[rstacruz]

Looks great. I assume you're emulating jQuery UI's eases, which is great. I'd merge them into Transit itself. :)

[matthewlein]

Also note that all except the Back ones will work everywhere. Back requires out of 0,1 range bezier (not supported in old webkit), as referenced in #27. I suggested a possible solution there.

I didn't test with the animate() fallback, but you may have already solved that.