/**
  * Copyright (c) 2016 hustcc
  * License: MIT
  * Version: v1.0.1
  * GitHub: https://github.com/hustcc/canvas-nest.js
 **/
 !
 function() {
     function n(n, e, t) {
         return n.getAttribute(e) || t
     }
     function e(n) {
         return document.getElementsByTagName(n)
     }
     function t() {
         var t = e("script"),
         o = t.length,
         i = t[o - 1];
         return {
             l: o,
             z: n(i, "zIndex", -1),
             o: n(i, "opacity", .5),
             c: n(i, "color", "0,0,0"),
             n: n(i, "count", 99)
         }
     }
     function o() {
         a = m.width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth,
         c = m.height = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight
     }
     function i() {
         r.clearRect(0, 0, a, c);
         var n, e, t, o, m, l;
         s.forEach(function(i, x) {
             for (i.x += i.xa, i.y += i.ya, i.xa *= i.x > a || i.x < 0 ? -1 : 1, i.ya *= i.y > c || i.y < 0 ? -1 : 1, r.fillRect(i.x - .5, i.y - .5, 1, 1), e = x + 1; e < u.length; e++) n = u[e],
             null !== n.x && null !== n.y && (o = i.x - n.x, m = i.y - n.y, l = o * o + m * m, l < n.max && (n === y && l >= n.max / 2 && (i.x -= .03 * o, i.y -= .03 * m), t = (n.max - l) / n.max, r.beginPath(), r.lineWidth = t / 2, r.strokeStyle = "rgba(" + d.c + "," + (t + .2) + ")", r.moveTo(i.x, i.y), r.lineTo(n.x, n.y), r.stroke()))
         }),
         x(i)
     }
     var a, c, u, m = document.createElement("canvas"),
     d = t(),
     l = "c_n" + d.l,
     r = m.getContext("2d"),
     x = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame ||
     function(n) {
         window.setTimeout(n, 1e3 / 45)
     },
     w = Math.random,
     y = {
         x: null,
         y: null,
         max: 2e4
     };
     m.id = l,
     m.style.cssText = "position:fixed;top:0;left:0;z-index:" + d.z + ";opacity:" + d.o,
     e("body")[0].appendChild(m),
     o(),
     window.onresize = o,
     window.onmousemove = function(n) {
         n = n || window.event,
         y.x = n.clientX,
         y.y = n.clientY
     },
     window.onmouseout = function() {
         y.x = null,
         y.y = null
     };
     for (var s = [], f = 0; d.n > f; f++) {
         var h = w() * a,
         g = w() * c,
         v = 2 * w() - 1,
         p = 2 * w() - 1;
         s.push({
             x: h,
             y: g,
             xa: v,
             ya: p,
             max: 6e3
         })
     }
     u = s.concat([y]),
     setTimeout(function() {
         i()
     },
     100)
 } ();