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Simple Easing Functions in Javascript - see https://github.com/gre/bezier-easing
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| /* | |
| * Easing Functions - inspired from http://gizma.com/easing/ | |
| * only considering the x value for the range [0, 1] => [0, 1] | |
| */ | |
| EasingFunctions = { | |
| // no easing, no acceleration | |
| linear: function (x) { return x }, | |
| // accelerating from zero velocity | |
| easeInQuad: function (x) { return x*x }, | |
| // decelerating to zero velocity | |
| easeOutQuad: function (x) { return x*(2-x) }, | |
| // acceleration until halfway, then deceleration | |
| easeInOutQuad: function (x) { return x<.5 ? 2*x*x : -1+(4-2*x)*x }, | |
| // accelerating from zero velocity | |
| easeInCubic: function (x) { return x*x*x }, | |
| // decelerating to zero velocity | |
| easeOutCubic: function (x) { return (--x)*x*x+1 }, | |
| // acceleration until halfway, then deceleration | |
| easeInOutCubic: function (x) { return x<.5 ? 4*x*x*x : (x-1)*(2*x-2)*(2*x-2)+1 }, | |
| // accelerating from zero velocity | |
| easeInQuart: function (x) { return x*x*x*x }, | |
| // decelerating to zero velocity | |
| easeOutQuart: function (x) { return 1-(--x)*x*x*x }, | |
| // acceleration until halfway, then deceleration | |
| easeInOutQuart: function (x) { return x<.5 ? 8*x*x*x*x : 1-8*(--x)*x*x*x }, | |
| // accelerating from zero velocity | |
| easeInQuint: function (x) { return x*x*x*x*x }, | |
| // decelerating to zero velocity | |
| easeOutQuint: function (x) { return 1+(--x)*x*x*x*x }, | |
| // acceleration until halfway, then deceleration | |
| easeInOutQuint: function (x) { return x<.5 ? 16*x*x*x*x*x : 1+16*(--x)*x*x*x*x } | |
| } |
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