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easing.js
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easing.js
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/*
Copyright (c) 2004-2009, 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
;
}};
}
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Expires
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easing.js (3 KB)
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