jquery在firefox中设置背景位置动画
我在Firefox上有一个动画问题。问题的第二个答案是解决它,但只针对一个狭窄的动画。我希望在每个轴上都像这样应用缓和(在IE和Chrome中工作): 这里定义了正反两种情况:jquery在firefox中设置背景位置动画,jquery,firefox,jquery-animate,background-position,Jquery,Firefox,Jquery Animate,Background Position,我在Firefox上有一个动画问题。问题的第二个答案是解决它,但只针对一个狭窄的动画。我希望在每个轴上都像这样应用缓和(在IE和Chrome中工作): 这里定义了正反两种情况: $j.easing.sin = function(p, n, firstNum, diff) { return Math.sin(p * Math.PI / 2) * diff + firstNum; }; $j.easing.cos = function(p, n, firstNum, diff) {
$j.easing.sin = function(p, n, firstNum, diff) {
return Math.sin(p * Math.PI / 2) * diff + firstNum;
};
$j.easing.cos = function(p, n, firstNum, diff) {
return firstNum + diff - Math.cos(p * Math.PI / 2) * diff;
};
对于Firefox,我需要打电话
$j("#labyrinth").animate({
backgroundPosition: (position.x + 350) + ' ' + (position.y + 350)
}, speed);
但随后我放松了放松功能。所以,我的问题是,如何让它在FF中工作,并为每个轴提供缓和功能?我已经破解了它。它适用于sin和cos函数,但您也可以添加自己的函数。 动画的名称如下:
if ($.browser;.mozilla) {
$("#labyrinth").animate({
backgroundPosition: (position.x + 350) + ' ' + (position.y + 350) + ' sin cos'
}, 3000);
}
同时也要考虑的动画代码是:
(function($) {
var oldAnim = $.fn.animate;
$.fn.animate = function(prop){
if('background-position' in prop){
prop.backgroundPosition = prop['background-position'];
delete prop['background-position'];
}
if('backgroundPosition' in prop){
prop.backgroundPosition = '('+ prop.backgroundPosition + ')';
}
return oldAnim.apply(this, arguments);
};
function toArray(strg){
var easingX = strg.split(' ')[2];
var easingY = strg.split(' ')[3];
strg = strg.replace(/left|top/g,'0px');
strg = strg.replace(/right|bottom/g,'100%');
strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
var result = [];
if (easingX === undefined && easingY === undefined) {
result = [parseFloat(res[1],10), res[2], parseFloat(res[3],10), res[4]];
return result;
}
result = [parseFloat(res[1],10), res[2], parseFloat(res[3],10), res[4], easingX, easingY.replace(')', '')];
return result;
}
// easing functions I need
function sin(p) {
return Math.sin(p * Math.PI / 2);
}
function cos(p) {
return 1 - Math.cos(p * Math.PI / 2);
}
$.fx.step.backgroundPosition = function(fx) {
if (!fx.bgPosReady) {
var start = $.curCSS(fx.elem,'backgroundPosition');
start = toArray(start);
fx.start = [start[0],start[2]];
var end = toArray(fx.end);
fx.end = [end[0],end[2]];
// those easings are in fx.end
fx.easingX = end[4];
fx.easingY = end[5];
fx.unit = [end[1],end[3]];
fx.bgPosReady = true;
}
var posX = fx.pos;
var posY = fx.pos;
if (fx.easingX !== undefined && fx.easingY !== undefined) {
if (fx.easingX === 'sin') {
posX = sin(fx.pos);
} else if (fx.easingX === 'cos') {
posX = cos(fx.pos);
}
if (fx.easingY === 'sin') {
posY = sin(fx.pos);
} else if (fx.easingY === 'cos') {
posY = cos(fx.pos);
}
}
var x = ((fx.end[0] - fx.start[0]) * posX) + fx.start[0] + fx.unit[0];
var y = ((fx.end[1] - fx.start[1]) * posY) + fx.start[1] + fx.unit[1];
fx.elem.style.backgroundPosition = x +' '+ y;
};
})(jQuery);
我只是稍微修改了一下,感谢用户
(function($) {
var oldAnim = $.fn.animate;
$.fn.animate = function(prop){
if('background-position' in prop){
prop.backgroundPosition = prop['background-position'];
delete prop['background-position'];
}
if('backgroundPosition' in prop){
prop.backgroundPosition = '('+ prop.backgroundPosition + ')';
}
return oldAnim.apply(this, arguments);
};
function toArray(strg){
var easingX = strg.split(' ')[2];
var easingY = strg.split(' ')[3];
strg = strg.replace(/left|top/g,'0px');
strg = strg.replace(/right|bottom/g,'100%');
strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
var result = [];
if (easingX === undefined && easingY === undefined) {
result = [parseFloat(res[1],10), res[2], parseFloat(res[3],10), res[4]];
return result;
}
result = [parseFloat(res[1],10), res[2], parseFloat(res[3],10), res[4], easingX, easingY.replace(')', '')];
return result;
}
// easing functions I need
function sin(p) {
return Math.sin(p * Math.PI / 2);
}
function cos(p) {
return 1 - Math.cos(p * Math.PI / 2);
}
$.fx.step.backgroundPosition = function(fx) {
if (!fx.bgPosReady) {
var start = $.curCSS(fx.elem,'backgroundPosition');
start = toArray(start);
fx.start = [start[0],start[2]];
var end = toArray(fx.end);
fx.end = [end[0],end[2]];
// those easings are in fx.end
fx.easingX = end[4];
fx.easingY = end[5];
fx.unit = [end[1],end[3]];
fx.bgPosReady = true;
}
var posX = fx.pos;
var posY = fx.pos;
if (fx.easingX !== undefined && fx.easingY !== undefined) {
if (fx.easingX === 'sin') {
posX = sin(fx.pos);
} else if (fx.easingX === 'cos') {
posX = cos(fx.pos);
}
if (fx.easingY === 'sin') {
posY = sin(fx.pos);
} else if (fx.easingY === 'cos') {
posY = cos(fx.pos);
}
}
var x = ((fx.end[0] - fx.start[0]) * posX) + fx.start[0] + fx.unit[0];
var y = ((fx.end[1] - fx.start[1]) * posY) + fx.start[1] + fx.unit[1];
fx.elem.style.backgroundPosition = x +' '+ y;
};
})(jQuery);