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tt-rss/lib/dojo/fx/easing.js

167 lines
3.1 KiB
JavaScript

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