原理:
利用canvas-nest.js
脚本实现canvas上绘制的蜂窝状网站背景,效果可见我的网站,很是有魔性。
特性:
不依赖于 jQuery 和 JavaScript 框架
轻量级,只有 1.66kb 大小
非常容易使用
使用:
1、下载canvas-nest.min.js脚本文件
- ! function() {
- function o(w, v, i) {
- return w.getAttribute(v) || i
- }
- function j(i) {
- return document.getElementsByTagName(i)
- }
- function l() {
- var i = j("script"),
- w = i.length,
- v = i[w - 1];
- return {
- l: w,
- z: o(v, "zIndex", -1),
- o: o(v, "opacity", 0.5),
- c: o(v, "color", "255,0,0"),
- n: o(v, "count", 99)
- }
- }
- function k() {
- r = u.width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth, n = u.height = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight
- }
- function b() {
- e.clearRect(0, 0, r, n);
- var w = [f].concat(t);
- var x, v, A, B, z, y;
- t.forEach(function(i) {
- i.x += i.xa, i.y += i.ya, i.xa *= i.x > r || i.x < 0 ? -1 : 1, i.ya *= i.y > n || i.y < 0 ? -1 : 1, e.fillRect(i.x - 0.5, i.y - 0.5, 1, 1);
- for(v = 0; v < w.length; v++) {
- x = w[v];
- if(i !== x && null !== x.x && null !== x.y) {
- B = i.x - x.x, z = i.y - x.y, y = B * B + z * z;
- y < x.max && (x === f && y >= x.max / 2 && (i.x -= 0.03 * B, i.y -= 0.03 * z), A = (x.max - y) / x.max, e.beginPath(), e.lineWidth = A / 2, e.strokeStyle = "rgba(" + s.c + "," + (A + 0.2) + ")", e.moveTo(i.x, i.y), e.lineTo(x.x, x.y), e.stroke())
- }
- }
- w.splice(w.indexOf(i), 1)
- }), m(b)
- }
- var u = document.createElement("canvas"),
- s = l(),
- c = "c_n" + s.l,
- e = u.getContext("2d"),
- r, n, m = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function(i) {
- window.setTimeout(i, 1000 / 45)
- },
- a = Math.random,
- f = {
- x: null,
- y: null,
- max: 20000
- };
- u.id = c;
- u.style.cssText = "position:fixed;top:0;left:0;z-index:" + s.z + ";opacity:" + s.o;
- j("body")[0].appendChild(u);
- k(), window.onresize = k;
- window.onmousemove = function(i) {
- i = i || window.event, f.x = i.clientX, f.y = i.clientY
- }, window.onmouseout = function() {
- f.x = null, f.y = null
- };
- for(var t = [], p = 0; s.n > p; p++) {
- var h = a() * r,
- g = a() * n,
- q = 2 * a() - 1,
- d = 2 * a() - 1;
- t.push({
- x: h,
- y: g,
- xa: q,
- ya: d,
- max: 6000
- })
- }
- setTimeout(function() {
- b()
- }, 100)
- }();
2、通过FTP等方法上传到自己网站上,得到脚本的URL链接。
3、添加下面代码到网站标签之前即可,例如
- <script src="<?php bloginfo('template_directory'); ?>/js/canvas-nest.min.js"></script>
想换蜂窝颜色透明度或者数量,修改js文件里面的opacity、color和count数值即可。
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