/**
* ========================15.動畫相關 s========================
*/
/**
* Tween.js 緩動動畫
* t: current time（當前時間）
* b: beginning value（初始值）
* c: change in value（變化量）
* d: duration（持續時間）
* @type {{Quad: {easeInOut: Tween.Quad.easeInOut, easeIn: (function(*, *, *, *): *), easeOut: (function(*, *, *, *): *)}, Quart: {easeInOut: Tween.Quart.easeInOut, easeIn: (function(*, *, *, *): *), easeOut: (function(*, *, *, *): *)}, Expo: {easeInOut: Tween.Expo.easeInOut, easeIn: (function(*, *, *, *): *), easeOut: (function(*, *, *, *): *)}, Elastic: {easeInOut: Tween.Elastic.easeInOut, easeIn: Tween.Elastic.easeIn, easeOut: Tween.Elastic.easeOut}, Quint: {easeInOut: Tween.Quint.easeInOut, easeIn: (function(*, *, *, *): *), easeOut: (function(*, *, *, *): *)}, Circ: {easeInOut: Tween.Circ.easeInOut, easeIn: (function(*, *, *, *): *), easeOut: (function(*, *, *, *): *)}, Back: {easeInOut: Tween.Back.easeInOut, easeIn: (function(*, *, *, *, *=): *), easeOut: (function(*, *, *, *, *=): *)}, Sine: {easeInOut: (function(*, *, *, *): *), easeIn: (function(*, *, *, *): *), easeOut: (function(*, *, *, *): *)}, Bounce: {easeInOut: Tween.Bounce.easeInOut, easeIn: (function(*, *, *=, *=): *), easeOut: Tween.Bounce.easeOut}, Cubic: {easeInOut: Tween.Cubic.easeInOut, easeIn: (function(*, *, *, *): *), easeOut: (function(*, *, *, *): *)}, Linear: (function(*, *, *, *): *)}}
*/
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) {
var s;
if (t==0) return b;
if ((t /= d) == 1) return b + c;
if (typeof p == "undefined") p = d * .3;
if (!a || a < Math.abs(c)) {
s = p / 4;
a = c;
} else {
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) {
var s;
if (t==0) return b;
if ((t /= d) == 1) return b + c;
if (typeof p == "undefined") p = d * .3;
if (!a || a < Math.abs(c)) {
a = c;
s = p / 4;
} else {
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) {
var s;
if (t==0) return b;
if ((t /= d / 2) == 2) return b+c;
if (typeof p == "undefined") p = d * (.3 * 1.5);
if (!a || a < Math.abs(c)) {
a = c;
s = p / 4;
} else {
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 (typeof s == "undefined") s = 1.70158;
return c * (t /= d) * t * ((s + 1) * t - s) + b;
},
"easeOut": function(t, b, c, d, s) {
if (typeof 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 (typeof 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;
}
}
}
}
Math.tween = Tween;
/**
* 監聽初始化
*/
window.requestAnimFrame = (function(){
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
function( callback ){
window.setTimeout(callback, 1000 / 60);
};
})();
/**
* polyfill----------requestAnimationFrame加速硬件執行動畫
*/
(function() {
var lastTime = 0;
var vendors = ['webkit', 'moz'];
for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];
window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame'] || // Webkit中此取消方法的名字變了
window[vendors[x] + 'CancelRequestAnimationFrame'];
}
if (!window.requestAnimationFrame) {
window.requestAnimationFrame = function(callback, element) {
var currTime = new Date().getTime();
var timeToCall = Math.max(0, 16.7 - (currTime - lastTime));
var id = window.setTimeout(function() {
callback(currTime + timeToCall);
}, timeToCall);
lastTime = currTime + timeToCall;
return id;
};
}
if (!window.cancelAnimationFrame) {
window.cancelAnimationFrame = function(id) {
clearTimeout(id);
};
}
}());
/**
* ========================15.動畫相關 e========================
*/
