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'
bobapp官网最新优惠' +
' | ' +
aHtml.join('') +
' | ' +
' ' +
' ' +
' ' +
' | | ' +
sText + ' | ' +
' | ';
}
}
function Accelimation(from, to, time, zip) {
if (typeof zip == "undefined") zip = 0;
if (typeof unit == "undefined") unit = "px";
this.x0 = from;
this.x1 = to;
this.dt = time;
this.zip = -zip;
this.unit = unit;
this.timer = null;
this.onend = new Function();
this.onframe = new Function();
}
Accelimation.prototype.start = function() {
this.t0 = new Date().getTime();
this.t1 = this.t0 + this.dt;
var dx = this.x1 - this.x0;
this.c1 = this.x0 + ((1 + this.zip) * dx / 3);
this.c2 = this.x0 + ((2 + this.zip) * dx / 3);
Accelimation._add(this);
}
Accelimation.prototype.stop = function() {
Accelimation._remove(this);
}
Accelimation.prototype._paint = function(time) {
if (time < this.t1) {
var elapsed = time - this.t0;
this.onframe(Accelimation._getBezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
}
else this._end();
}
Accelimation.prototype._end = function() {
Accelimation._remove(this);
this.onframe(this.x1);
this.onend();
}
Accelimation._add = function(o) {
var index = this.instances.length;
this.instances[index] = o;
if (this.instances.length == 1) {
this.timerID = window.setInterval("Accelimation._paintAll()", this.targetRes);
}
}
Accelimation._remove = function(o) {
for (var i = 0; i < this.instances.length; i++) {
if (o == this.instances[i]) {
this.instances = this.instances.slice(0,i).concat( this.instances.slice(i+1) );
break;
}
}
if (this.instances.length == 0) {
window.clearInterval(this.timerID);
this.timerID = null;
}
}
Accelimation._paintAll = function() {
var now = new Date().getTime();
for (var i = 0; i < this.instances.length; i++) {
this.instances[i]._paint(now);
}
}
Accelimation._B1 = function(t) { return t*t*t }
Accelimation._B2 = function(t) { return 3*t*t*(1-t) }
Accelimation._B3 = function(t) { return 3*t*(1-t)*(1-t) }
Accelimation._B4 = function(t) { return (1-t)*(1-t)*(1-t) }
Accelimation._getBezier = function(percent,startPos,endPos,control1,control2) {
return endPos * this._B1(percent) + control2 * this._B2(percent) + control1 * this._B3(percent) + startPos * this._B4(percent);
}
Accelimation.instances = [];
Accelimation.targetRes = 10;
Accelimation.timerID = null;
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