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167 lines
3.1 KiB
JavaScript
167 lines
3.1 KiB
JavaScript
14 years ago
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/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojo.fx.easing"]){
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dojo._hasResource["dojo.fx.easing"]=true;
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dojo.provide("dojo.fx.easing");
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dojo.fx.easing={linear:function(n){
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return n;
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},quadIn:function(n){
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return Math.pow(n,2);
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},quadOut:function(n){
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return n*(n-2)*-1;
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},quadInOut:function(n){
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n=n*2;
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if(n<1){
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return Math.pow(n,2)/2;
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}
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return -1*((--n)*(n-2)-1)/2;
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},cubicIn:function(n){
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return Math.pow(n,3);
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},cubicOut:function(n){
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return Math.pow(n-1,3)+1;
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},cubicInOut:function(n){
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n=n*2;
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if(n<1){
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return Math.pow(n,3)/2;
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}
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n-=2;
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return (Math.pow(n,3)+2)/2;
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},quartIn:function(n){
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return Math.pow(n,4);
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},quartOut:function(n){
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return -1*(Math.pow(n-1,4)-1);
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},quartInOut:function(n){
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n=n*2;
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if(n<1){
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return Math.pow(n,4)/2;
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}
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n-=2;
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return -1/2*(Math.pow(n,4)-2);
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},quintIn:function(n){
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return Math.pow(n,5);
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},quintOut:function(n){
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return Math.pow(n-1,5)+1;
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},quintInOut:function(n){
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n=n*2;
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if(n<1){
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return Math.pow(n,5)/2;
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}
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n-=2;
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return (Math.pow(n,5)+2)/2;
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},sineIn:function(n){
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return -1*Math.cos(n*(Math.PI/2))+1;
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},sineOut:function(n){
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return Math.sin(n*(Math.PI/2));
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},sineInOut:function(n){
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return -1*(Math.cos(Math.PI*n)-1)/2;
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},expoIn:function(n){
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return (n==0)?0:Math.pow(2,10*(n-1));
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},expoOut:function(n){
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return (n==1)?1:(-1*Math.pow(2,-10*n)+1);
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},expoInOut:function(n){
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if(n==0){
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return 0;
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}
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if(n==1){
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return 1;
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}
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n=n*2;
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if(n<1){
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return Math.pow(2,10*(n-1))/2;
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}
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--n;
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return (-1*Math.pow(2,-10*n)+2)/2;
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},circIn:function(n){
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return -1*(Math.sqrt(1-Math.pow(n,2))-1);
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},circOut:function(n){
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n=n-1;
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return Math.sqrt(1-Math.pow(n,2));
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},circInOut:function(n){
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n=n*2;
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if(n<1){
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return -1/2*(Math.sqrt(1-Math.pow(n,2))-1);
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}
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n-=2;
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return 1/2*(Math.sqrt(1-Math.pow(n,2))+1);
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},backIn:function(n){
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var s=1.70158;
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return Math.pow(n,2)*((s+1)*n-s);
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},backOut:function(n){
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n=n-1;
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var s=1.70158;
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return Math.pow(n,2)*((s+1)*n+s)+1;
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},backInOut:function(n){
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var s=1.70158*1.525;
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n=n*2;
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if(n<1){
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return (Math.pow(n,2)*((s+1)*n-s))/2;
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}
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n-=2;
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return (Math.pow(n,2)*((s+1)*n+s)+2)/2;
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},elasticIn:function(n){
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if(n==0||n==1){
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return n;
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}
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var p=0.3;
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var s=p/4;
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n=n-1;
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return -1*Math.pow(2,10*n)*Math.sin((n-s)*(2*Math.PI)/p);
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},elasticOut:function(n){
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if(n==0||n==1){
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return n;
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}
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var p=0.3;
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var s=p/4;
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return Math.pow(2,-10*n)*Math.sin((n-s)*(2*Math.PI)/p)+1;
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},elasticInOut:function(n){
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if(n==0){
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return 0;
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}
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n=n*2;
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if(n==2){
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return 1;
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}
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var p=0.3*1.5;
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var s=p/4;
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if(n<1){
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n-=1;
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return -0.5*(Math.pow(2,10*n)*Math.sin((n-s)*(2*Math.PI)/p));
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}
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n-=1;
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return 0.5*(Math.pow(2,-10*n)*Math.sin((n-s)*(2*Math.PI)/p))+1;
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},bounceIn:function(n){
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return (1-dojo.fx.easing.bounceOut(1-n));
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},bounceOut:function(n){
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var s=7.5625;
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var p=2.75;
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var l;
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if(n<(1/p)){
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l=s*Math.pow(n,2);
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}else{
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if(n<(2/p)){
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n-=(1.5/p);
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l=s*Math.pow(n,2)+0.75;
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}else{
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if(n<(2.5/p)){
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n-=(2.25/p);
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l=s*Math.pow(n,2)+0.9375;
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}else{
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n-=(2.625/p);
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l=s*Math.pow(n,2)+0.984375;
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}
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}
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}
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return l;
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},bounceInOut:function(n){
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if(n<0.5){
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return dojo.fx.easing.bounceIn(n*2)/2;
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}
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return (dojo.fx.easing.bounceOut(n*2-1)/2)+0.5;
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}};
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}
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