<!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
>
<html xmlns=
"http://www.w3.org/1999/xhtml"
>
<head>
<meta http-equiv=
"Content-Type"
content=
"text/html; charset=gb2312"
/>
<title>Tween</title>
</head>
<body>
<div style=
"padding-left:50px;"
>
<div style=
"position:relative; border:1px solid #000000; width:550px; height:50px;"
>
<div id=
"idMove"
style=
"width:50px; height:50px; background:#930; position:absolute;"
></div>
</div>
<div style=
"position:relative;width:550px;height:200px; margin-top:50px;"
>
<div id=
"idChart"
style=
"border:1px solid #000;height:200px;"
> </div>
<div id=
"idLine"
style=
"position:absolute;top:0;left:0;height:200px;width:1px;background:#000;"
></div>
</div>
</div>
<div>
<p> Tween类型: <br />
<label>
<input name=
"vTween"
type=
"radio"
value=
"Linear"
checked=
"checked"
/>
Linear </label>
<label>
<input name=
"vTween"
type=
"radio"
value=
"Quad"
/>
Quadratic </label>
<label>
<input name=
"vTween"
type=
"radio"
value=
"Cubic"
/>
Cubic </label>
<label>
<input name=
"vTween"
type=
"radio"
value=
"Quart"
/>
Quartic </label>
<label>
<input name=
"vTween"
type=
"radio"
value=
"Quint"
/>
Quintic </label>
<label>
<input name=
"vTween"
type=
"radio"
value=
"Sine"
/>
Sinusoidal </label>
<br />
<label>
<input name=
"vTween"
type=
"radio"
value=
"Expo"
/>
Exponential </label>
<label>
<input name=
"vTween"
type=
"radio"
value=
"Circ"
/>
Circular </label>
<label>
<input name=
"vTween"
type=
"radio"
value=
"Elastic"
/>
Elastic </label>
<label>
<input name=
"vTween"
type=
"radio"
value=
"Back"
/>
Back </label>
<label>
<input name=
"vTween"
type=
"radio"
value=
"Bounce"
/>
Bounce </label>
</p>
<p> ease类型: <br />
<label>
<input name=
"vEase"
type=
"radio"
value=
"easeIn"
checked=
"checked"
/>
easeIn </label>
<label>
<input name=
"vEase"
type=
"radio"
value=
"easeOut"
/>
easeOut </label>
<label>
<input name=
"vEase"
type=
"radio"
value=
"easeInOut"
/>
easeInOut </label>
</p>
<input id=
"idSpeed"
type=
"button"
value=
"减慢速度"
/>
<input id=
"idRun"
type=
"button"
value=
" Run "
/>
</div>
<script>
var
Tween = {
Linear:
function
(t,b,c,d){
return
c*t/d + b; },
Quad: {
easeIn:
function
(t,b,c,d){
return
c*(t/=d)*t + b;
},
easeOut:
function
(t,b,c,d){
return
-c *(t/=d)*(t-2) + b;
},
easeInOut:
function
(t,b,c,d){
if
((t/=d/2) < 1)
return
c/2*t*t + b;
return
-c/2 * ((--t)*(t-2) - 1) + b;
}
},
Cubic: {
easeIn:
function
(t,b,c,d){
return
c*(t/=d)*t*t + b;
},
easeOut:
function
(t,b,c,d){
return
c*((t=t/d-1)*t*t + 1) + b;
},
easeInOut:
function
(t,b,c,d){
if
((t/=d/2) < 1)
return
c/2*t*t*t + b;
return
c/2*((t-=2)*t*t + 2) + b;
}
},
Quart: {
easeIn:
function
(t,b,c,d){
return
c*(t/=d)*t*t*t + b;
},
easeOut:
function
(t,b,c,d){
return
-c * ((t=t/d-1)*t*t*t - 1) + b;
},
easeInOut:
function
(t,b,c,d){
if
((t/=d/2) < 1)
return
c/2*t*t*t*t + b;
return
-c/2 * ((t-=2)*t*t*t - 2) + b;
}
},
Quint: {
easeIn:
function
(t,b,c,d){
return
c*(t/=d)*t*t*t*t + b;
},
easeOut:
function
(t,b,c,d){
return
c*((t=t/d-1)*t*t*t*t + 1) + b;
},
easeInOut:
function
(t,b,c,d){
if
((t/=d/2) < 1)
return
c/2*t*t*t*t*t + b;
return
c/2*((t-=2)*t*t*t*t + 2) + b;
}
},
Sine: {
easeIn:
function
(t,b,c,d){
return
-c * Math.
cos
(t/d * (Math.PI/2)) + c + b;
},
easeOut:
function
(t,b,c,d){
return
c * Math.sin(t/d * (Math.PI/2)) + b;
},
easeInOut:
function
(t,b,c,d){
return
-c/2 * (Math.
cos
(Math.PI*t/d) - 1) + b;
}
},
Expo: {
easeIn:
function
(t,b,c,d){
return
(t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
},
easeOut:
function
(t,b,c,d){
return
(t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
},
easeInOut:
function
(t,b,c,d){
if
(t==0)
return
b;
if
(t==d)
return
b+c;
if
((t/=d/2) < 1)
return
c/2 * Math.pow(2, 10 * (t - 1)) + b;
return
c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
}
},
Circ: {
easeIn:
function
(t,b,c,d){
return
-c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
},
easeOut:
function
(t,b,c,d){
return
c * Math.sqrt(1 - (t=t/d-1)*t) + b;
},
easeInOut:
function
(t,b,c,d){
if
((t/=d/2) < 1)
return
-c/2 * (Math.sqrt(1 - t*t) - 1) + b;
return
c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
}
},
Elastic: {
easeIn:
function
(t,b,c,d,a,p){
if
(t==0)
return
b;
if
((t/=d)==1)
return
b+c;
if
(!p) p=d*.3;
if
(!a || a < Math.
abs
(c)) { a=c;
var
s=p/4; }
else
var
s = p/(2*Math.PI) * Math.asin (c/a);
return
-(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
},
easeOut:
function
(t,b,c,d,a,p){
if
(t==0)
return
b;
if
((t/=d)==1)
return
b+c;
if
(!p) p=d*.3;
if
(!a || a < Math.
abs
(c)) { a=c;
var
s=p/4; }
else
var
s = p/(2*Math.PI) * Math.asin (c/a);
return
(a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b);
},
easeInOut:
function
(t,b,c,d,a,p){
if
(t==0)
return
b;
if
((t/=d/2)==2)
return
b+c;
if
(!p) p=d*(.3*1.5);
if
(!a || a < Math.
abs
(c)) { a=c;
var
s=p/4; }
else
var
s = p/(2*Math.PI) * Math.asin (c/a);
if
(t < 1)
return
-.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
return
a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
}
},
Back: {
easeIn:
function
(t,b,c,d,s){
if
(s == undefined) s = 1.70158;
return
c*(t/=d)*t*((s+1)*t - s) + b;
},
easeOut:
function
(t,b,c,d,s){
if
(s == undefined) s = 1.70158;
return
c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
},
easeInOut:
function
(t,b,c,d,s){
if
(s == undefined) s = 1.70158;
if
((t/=d/2) < 1)
return
c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
return
c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
}
},
Bounce: {
easeIn:
function
(t,b,c,d){
return
c - Tween.Bounce.easeOut(d-t, 0, c, d) + b;
},
easeOut:
function
(t,b,c,d){
if
((t/=d) < (1/2.75)) {
return
c*(7.5625*t*t) + b;
}
else
if
(t < (2/2.75)) {
return
c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
}
else
if
(t < (2.5/2.75)) {
return
c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
}
else
{
return
c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
}
},
easeInOut:
function
(t,b,c,d){
if
(t < d/2)
return
Tween.Bounce.easeIn(t*2, 0, c, d) * .5 + b;
else
return
Tween.Bounce.easeOut(t*2-d, 0, c, d) * .5 + c*.5 + b;
}
}
}
var
$ =
function
(id) {
return
"string"
== typeof id ? document.getElementById(id) : id;
};
var
Each =
function
(list, fun){
for
(
var
i = 0, len = list.length; i < len; i++) { fun(list[i], i); }
};
var
fun, iChart = 550, iDuration = 100;
function
Move(){
var
oM = $(
"idMove"
).style, oL = $(
"idLine"
).style, t=0, c=500, d=iDuration;
oM.left=oL.left=
"0px"
; clearTimeout(Move._t);
function
_run(){
if
(t<d){
t++;
oM.left = Math.
ceil
(fun(t,0,c,d)) +
"px"
;
oL.left = Math.
ceil
(Tween.Linear(t,0,iChart,d)) +
"px"
;
Move._t = setTimeout(_run, 10);
}
else
{
oM.left = c +
"px"
;
oL.left = iChart +
"px"
;
}
}
_run();
}
function
Chart(){
var
a = [];
for
(
var
i = 0; i < iChart; i++) {
a.push(
'<div style="background-color:#f60;font-size:0;width:3px;height:3px;position:absolute;left:'
+ (i-1) +
'px;top:'
+ (Math.
ceil
(fun(i,200,-200,iChart))) +
'px;"><\/div>'
);
}
$(
"idChart"
).innerHTML = a.join(
""
);
}
var
arrTween = document.getElementsByName(
"vTween"
);
var
arrEase = document.getElementsByName(
"vEase"
);
Each(arrTween,
function
(o){ o.onclick =
function
(){ SetFun(); Chart(); } })
Each(arrEase,
function
(o){ o.onclick =
function
(){ SetFun(); Chart(); } })
function
SetFun(){
var
sTween, sEase;
Each(arrTween,
function
(o){
if
(o.checked){ sTween = o.value; } })
Each(arrEase,
function
(o){
if
(o.checked){ sEase = o.value; } })
fun = sTween ==
"Linear"
? Tween.Linear : Tween[sTween][sEase];
}
$(
"idRun"
).onclick =
function
(){ SetFun(); Chart(); Move(); }
$(
"idSpeed"
).onclick =
function
(){
if
(iDuration == 100){
iDuration = 500; this.value =
"加快速度"
;
}
else
{
iDuration = 100; this.value =
"减慢速度"
;
}
}
</script>
</body>
</html>