Easing Equation for SASS/SCSS

A list of easing cubic-bezier functions derived from Robert Penner's easing equation. Code was taken from the LESS-CSS3-Mixins github repository and then converted from LESS to SASS/SCSS.

Usage in a Compass project

// easing.scss
@import "easing";

.button {
  @include transition(400ms $easeInOutBack);
}

// easing.sass
@import easing

.button
  +transition(400ms $easeInOutBack)

Easing list

// Cubic
$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);

Credits

• Credit goes to MatthewWagerfield and his LESS-CSS3-Mixins for initially creating this.