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Created September 25, 2015 09:31
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Approximated penner equations for cubic-bezier css animation easings
///////////////////////////////////////////
// Animation Cubic Bezier easings //
// see - http://matthewlein.com/ceaser //
///////////////////////////////////////////
// defaults
$ease-linear: "cubic-bezier(0.250, 0.250, 0.750, 0.750)";
$ease-default: "cubic-bezier(0.250, 0.100, 0.250, 1.000)";
$ease-in: "cubic-bezier(0.420, 0.000, 1.000, 1.000)";
$ease-out: "cubic-bezier(0.000, 0.000, 0.580, 1.000)";
$ease-in-out: "cubic-bezier(0.420, 0.000, 0.580, 1.000)";
// penner equations (approximated)
$ease-in-quad: "cubic-bezier(0.550, 0.085, 0.680, 0.530)";
$ease-in-cubic: "cubic-bezier(0.550, 0.055, 0.675, 0.190)";
$ease-in-quart: "cubic-bezier(0.895, 0.030, 0.685, 0.220)";
$ease-in-quint: "cubic-bezier(0.755, 0.050, 0.855, 0.060)";
$ease-in-sine: "cubic-bezier(0.470, 0.000, 0.745, 0.715)";
$ease-in-expo: "cubic-bezier(0.950, 0.050, 0.795, 0.035)";
$ease-in-circ: "cubic-bezier(0.600, 0.040, 0.980, 0.335)";
$ease-in-back: "cubic-bezier(0.600, -0.280, 0.735, 0.045)";
$ease-out-quad: "cubic-bezier(0.250, 0.460, 0.450, 0.940)";
$ease-out-cubic: "cubic-bezier(0.215, 0.610, 0.355, 1.000)";
$ease-out-quart: "cubic-bezier(0.165, 0.840, 0.440, 1.000)";
$ease-out-quint: "cubic-bezier(0.230, 1.000, 0.320, 1.000)";
$ease-out-sine: "cubic-bezier(0.390, 0.575, 0.565, 1.000)";
$ease-out-expo: "cubic-bezier(0.190, 1.000, 0.220, 1.000)";
$ease-out-circ: "cubic-bezier(0.075, 0.820, 0.165, 1.000)";
$ease-out-back: "cubic-bezier(0.175, 0.885, 0.320, 1.275)";
$ease-in-out-quad: "cubic-bezier(0.455, 0.030, 0.515, 0.955)";
$ease-in-out-cubic: "cubic-bezier(0.645, 0.045, 0.355, 1.000)";
$ease-in-out-quart: "cubic-bezier(0.770, 0.000, 0.175, 1.000)";
$ease-in-out-quint: "cubic-bezier(0.860, 0.000, 0.070, 1.000)";
$ease-in-out-sine: "cubic-bezier(0.445, 0.050, 0.550, 0.950)";
$ease-in-out-expo: "cubic-bezier(1.000, 0.000, 0.000, 1.000)";
$ease-in-out-circ: "cubic-bezier(0.785, 0.135, 0.150, 0.860)";
$ease-in-out-back: "cubic-bezier(0.680, -0.550, 0.265, 1.550)";
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