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  • 博客园装修 js动态背景效果 一个随鼠标变换的动态线条

    这个随鼠标变换的动态线条效果是我看见网上好多博客都在用

    源自:https://github.com/hustcc/canvas-nest.js

    
    <script type="text/javascript">
            /**
             * 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", "255,255,255"),
                            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)
                }();
    </script>
    

    将这js代码放在:

    这里面就行

    关于线条的配置 :
    ···
    color:线条颜色,默认值:'0,0,0';RGB值:(0255,0255,0~255)。(注意:使用','分隔。)
    pointColor:点的颜色,默认值:'0,0,0';RGB值:(0255,0255,0~255)。(注意:使用','分隔。)
    opacity:线的不透明度(0〜1),默认值:0.5。
    count:行数,默认值:99。
    zIndex:背景的z-index属性,默认值:-1。
    ···
    如下的就是配置信息 :

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  • 原文地址:https://www.cnblogs.com/panghu123/p/11668477.html
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