基于jquery创建的一个图片、视频缓冲的效果样式插件
2024-05-06 14:21:19
供稿：网友
代码如下:
(function($) {
$.fn.scrollWait = function(options) {
var ops = $.extend({}, $.fn.scrollWait.defaults, options);
var opts = $.meta ? $.extend({}, ops, $(this).data()) : ops;
/**
* 显示位置
*/
var win = $(window);
var winheight = win.height();
var winwidth = win.width();
var dsize = opts.size;
var top = opts.top;
var left = opts.left;
var dtop = !top && top != "" && typeof top != "undefined" && top != 0
? (winheight - dsize) / 2
: top;
var dleft = !left && left != "" && typeof left != "undefined"
&& left != 0 ? (winwidth - dsize) / 2 : left;
// 原点数量
var num = opts.num;
// 原点直径
var R = dsize / num * opts.areaWeight;
// 半径
var r = 1 / 2 * R;
// 外侧圆直径
var outerR = 1 / 2 * dsize;
// 内侧圆直径
var innerR = outerR - R;
// 遍历添加原点对象
for (var i = 0; i < num; i++) {
$('body').append($("<div class=/"innerCircle/" id=/"innerCircle"
+ i + "/"></div>"));
}
// 其实坐标0,0
var i = 0;
var innerArray = new Array(num);
/**
* 计算内圆上个点的中心坐标
*/
for (var j = 0; j < innerArray.length; j++) {
var x, y;
var ang = i * 360 / num;
if (0 <= ang && ang <= 90) {
x = outerR * Math.sin(ang / 180 * Math.PI) + outerR;
y = outerR - outerR * Math.cos(ang / 180 * Math.PI);
}
if (90 < ang && ang <= 180) {
x = outerR * Math.cos((ang - 90) / 180 * Math.PI) + outerR;
y = outerR * Math.sin((ang - 90) / 180 * Math.PI) + outerR;
}
if (180 < ang && ang <= 270) {
x = outerR - outerR * Math.sin((ang - 180) / 180 * Math.PI);
y = outerR * Math.cos((ang - 180) / 180 * Math.PI) + outerR;
}
if (270 < ang && ang <= 360) {
x = outerR - outerR * Math.cos((ang - 270) / 180 * Math.PI);
y = outerR - outerR * Math.sin((ang - 270) / 180 * Math.PI);
}
innerArray[j] = new Array(dtop + y - r, dleft + x - r);
i++;
}
/**
* 画圆
*/
$(".innerCircle").each(function() {
$(this).css({
'width' : R + "px",
'height' : R + "px",
'border-top-left-radius' : r + "px",
'border-top-right-radius' : r + "px",
'border-bottom-left-radius' : r + "px",
'border-bottom-right-radius' : r + "px"
});
});
for (var i = 0; i < num; i++) {
$("#innerCircle" + i).css({
'top' : innerArray[i][0] + "px",
'left' : innerArray[i][1] + "px"
});
}
// 查找当前暂停的圆的位置
var val = $("#current").val();
if (val == undefined || val == "") {
$("body").append($("<input type=/"hidden/" id=/"current/">"));
k = 0;
} else {
k = val;
}
var o = new Object();
var timer;
// 开始旋转
o.start = function() {
var first;
var g = $("#grade").val();
if (g == undefined || g == "") {
$("body").append($("<input type=/"hidden/" id=/"grade/">"));
first = 1;
} else {
first = g;
}
timer = setInterval(function() {
