+++ /dev/null
-define("dojo/fx/easing", ["../_base/lang"], function(lang){
-
-// module:
-// dojo/fx/easing
-
-var easingFuncs = {
- // summary:
- // Collection of easing functions to use beyond the default
- // `dojo._defaultEasing` function.
- // description:
- // Easing functions are used to manipulate the iteration through
- // an `dojo.Animation`s _Line. _Line being the properties of an Animation,
- // and the easing function progresses through that Line determining
- // how quickly (or slowly) it should go. Or more accurately: modify
- // the value of the _Line based on the percentage of animation completed.
- //
- // All functions follow a simple naming convention of "ease type" + "when".
- // If the name of the function ends in Out, the easing described appears
- // towards the end of the animation. "In" means during the beginning,
- // and InOut means both ranges of the Animation will applied, both
- // beginning and end.
- //
- // One does not call the easing function directly, it must be passed to
- // the `easing` property of an animation.
- // example:
- // | dojo.require("dojo.fx.easing");
- // | var anim = dojo.fadeOut({
- // | node: 'node',
- // | duration: 2000,
- // | // note there is no ()
- // | easing: dojo.fx.easing.quadIn
- // | }).play();
- //
-
- linear: function(/* Decimal? */n){
- // summary:
- // A linear easing function
- return n;
- },
-
- quadIn: function(/* Decimal? */n){
- return Math.pow(n, 2);
- },
-
- quadOut: function(/* Decimal? */n){
- return n * (n - 2) * -1;
- },
-
- quadInOut: function(/* Decimal? */n){
- n = n * 2;
- if(n < 1){ return Math.pow(n, 2) / 2; }
- return -1 * ((--n) * (n - 2) - 1) / 2;
- },
-
- cubicIn: function(/* Decimal? */n){
- return Math.pow(n, 3);
- },
-
- cubicOut: function(/* Decimal? */n){
- return Math.pow(n - 1, 3) + 1;
- },
-
- cubicInOut: function(/* Decimal? */n){
- n = n * 2;
- if(n < 1){ return Math.pow(n, 3) / 2; }
- n -= 2;
- return (Math.pow(n, 3) + 2) / 2;
- },
-
- quartIn: function(/* Decimal? */n){
- return Math.pow(n, 4);
- },
-
- quartOut: function(/* Decimal? */n){
- return -1 * (Math.pow(n - 1, 4) - 1);
- },
-
- quartInOut: function(/* Decimal? */n){
- n = n * 2;
- if(n < 1){ return Math.pow(n, 4) / 2; }
- n -= 2;
- return -1 / 2 * (Math.pow(n, 4) - 2);
- },
-
- quintIn: function(/* Decimal? */n){
- return Math.pow(n, 5);
- },
-
- quintOut: function(/* Decimal? */n){
- return Math.pow(n - 1, 5) + 1;
- },
-
- quintInOut: function(/* Decimal? */n){
- n = n * 2;
- if(n < 1){ return Math.pow(n, 5) / 2; }
- n -= 2;
- return (Math.pow(n, 5) + 2) / 2;
- },
-
- sineIn: function(/* Decimal? */n){
- return -1 * Math.cos(n * (Math.PI / 2)) + 1;
- },
-
- sineOut: function(/* Decimal? */n){
- return Math.sin(n * (Math.PI / 2));
- },
-
- sineInOut: function(/* Decimal? */n){
- return -1 * (Math.cos(Math.PI * n) - 1) / 2;
- },
-
- expoIn: function(/* Decimal? */n){
- return (n == 0) ? 0 : Math.pow(2, 10 * (n - 1));
- },
-
- expoOut: function(/* Decimal? */n){
- return (n == 1) ? 1 : (-1 * Math.pow(2, -10 * n) + 1);
- },
-
- expoInOut: function(/* Decimal? */n){
- if(n == 0){ return 0; }
- if(n == 1){ return 1; }
- n = n * 2;
- if(n < 1){ return Math.pow(2, 10 * (n - 1)) / 2; }
- --n;
- return (-1 * Math.pow(2, -10 * n) + 2) / 2;
- },
-
- circIn: function(/* Decimal? */n){
- return -1 * (Math.sqrt(1 - Math.pow(n, 2)) - 1);
- },
-
- circOut: function(/* Decimal? */n){
- n = n - 1;
- return Math.sqrt(1 - Math.pow(n, 2));
- },
-
- circInOut: function(/* Decimal? */n){
- n = n * 2;
- if(n < 1){ return -1 / 2 * (Math.sqrt(1 - Math.pow(n, 2)) - 1); }
- n -= 2;
- return 1 / 2 * (Math.sqrt(1 - Math.pow(n, 2)) + 1);
- },
-
- backIn: function(/* Decimal? */n){
- // summary:
- // An easing function that starts away from the target,
- // and quickly accelerates towards the end value.
- //
- // Use caution when the easing will cause values to become
- // negative as some properties cannot be set to negative values.
- var s = 1.70158;
- return Math.pow(n, 2) * ((s + 1) * n - s);
- },
-
- backOut: function(/* Decimal? */n){
- // summary:
- // An easing function that pops past the range briefly, and slowly comes back.
- // description:
- // An easing function that pops past the range briefly, and slowly comes back.
- //
- // Use caution when the easing will cause values to become negative as some
- // properties cannot be set to negative values.
-
- n = n - 1;
- var s = 1.70158;
- return Math.pow(n, 2) * ((s + 1) * n + s) + 1;
- },
-
- backInOut: function(/* Decimal? */n){
- // summary:
- // An easing function combining the effects of `backIn` and `backOut`
- // description:
- // An easing function combining the effects of `backIn` and `backOut`.
- // Use caution when the easing will cause values to become negative
- // as some properties cannot be set to negative values.
- var s = 1.70158 * 1.525;
- n = n * 2;
- if(n < 1){ return (Math.pow(n, 2) * ((s + 1) * n - s)) / 2; }
- n-=2;
- return (Math.pow(n, 2) * ((s + 1) * n + s) + 2) / 2;
- },
-
- elasticIn: function(/* Decimal? */n){
- // summary:
- // An easing function the elastically snaps from the start value
- // description:
- // An easing function the elastically snaps from the start value
- //
- // Use caution when the elasticity will cause values to become negative
- // as some properties cannot be set to negative values.
- if(n == 0 || n == 1){ return n; }
- var p = .3;
- var s = p / 4;
- n = n - 1;
- return -1 * Math.pow(2, 10 * n) * Math.sin((n - s) * (2 * Math.PI) / p);
- },
-
- elasticOut: function(/* Decimal? */n){
- // summary:
- // An easing function that elasticly snaps around the target value,
- // near the end of the Animation
- // description:
- // An easing function that elasticly snaps around the target value,
- // near the end of the Animation
- //
- // Use caution when the elasticity will cause values to become
- // negative as some properties cannot be set to negative values.
- if(n==0 || n == 1){ return n; }
- var p = .3;
- var s = p / 4;
- return Math.pow(2, -10 * n) * Math.sin((n - s) * (2 * Math.PI) / p) + 1;
- },
-
- elasticInOut: function(/* Decimal? */n){
- // summary:
- // An easing function that elasticly snaps around the value, near
- // the beginning and end of the Animation.
- // description:
- // An easing function that elasticly snaps around the value, near
- // the beginning and end of the Animation.
- //
- // Use caution when the elasticity will cause values to become
- // negative as some properties cannot be set to negative values.
- if(n == 0) return 0;
- n = n * 2;
- if(n == 2) return 1;
- var p = .3 * 1.5;
- var s = p / 4;
- if(n < 1){
- n -= 1;
- return -.5 * (Math.pow(2, 10 * n) * Math.sin((n - s) * (2 * Math.PI) / p));
- }
- n -= 1;
- return .5 * (Math.pow(2, -10 * n) * Math.sin((n - s) * (2 * Math.PI) / p)) + 1;
- },
-
- bounceIn: function(/* Decimal? */n){
- // summary:
- // An easing function that 'bounces' near the beginning of an Animation
- return (1 - easingFuncs.bounceOut(1 - n)); // Decimal
- },
-
- bounceOut: function(/* Decimal? */n){
- // summary:
- // An easing function that 'bounces' near the end of an Animation
- var s = 7.5625;
- var p = 2.75;
- var l;
- if(n < (1 / p)){
- l = s * Math.pow(n, 2);
- }else if(n < (2 / p)){
- n -= (1.5 / p);
- l = s * Math.pow(n, 2) + .75;
- }else if(n < (2.5 / p)){
- n -= (2.25 / p);
- l = s * Math.pow(n, 2) + .9375;
- }else{
- n -= (2.625 / p);
- l = s * Math.pow(n, 2) + .984375;
- }
- return l;
- },
-
- bounceInOut: function(/* Decimal? */n){
- // summary:
- // An easing function that 'bounces' at the beginning and end of the Animation
- if(n < 0.5){ return easingFuncs.bounceIn(n * 2) / 2; }
- return (easingFuncs.bounceOut(n * 2 - 1) / 2) + 0.5; // Decimal
- }
-};
-
-lang.setObject("dojo.fx.easing", easingFuncs);
-
-return easingFuncs;
-});
git.wh0rd.org / tt-rss.git / blobdiff