下雨遮挡效果raindrop-html代码-BFW代码库

下雨遮挡效果raindrop

代码语言：html

所属分类：三维

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
  
    <title> Raindrop</title>
    <style>
        html,body {
            padding: 0px;
            margin: 0px;
            height: 100%;
            overflow: hidden;
            background: black;
            font-family: 'Gayathri', sans-serif;
        }

        #rain {
            position: absolute;
            left: 0px;
            top: 0px;
            user-select: none;
        }

        h1 {
            text-align: center;
            margin-top: 130px;
            font-size: 42px;
            position: relative;
            color: white;
        }

        #options {
            text-align: center;
            margin-top: 50px;
            position: relative;
            z-index: 2;
        }

        #options button {
            padding: 20px;
            font-size: 22px;
            margin-left: 20px;
            margin-right: 20px;
            border-radius: 5px;
            cursor: pointer;
            background: white;
            border: 1px solid #95a5a6;
        }

@media only screen and (max-width: 600px) {
            .raindrop:nth-child(3) {
                display: none;
            }
        }
    </style>

</head>
<body translate="no">
    <canvas id="rain"></canvas>

    <div id="container">
        <h1>下雨遮挡效果</h1>
        <div id="options">
            <button class="raindrop">关于我们</button>
            <button class="raindrop">了解更多</button>
            <button class="raindrop">关于</button>
        </div>
    </div>

    <script>
        var c = document.getElementById("rain");

        c.width = window.innerWidth;
        c.height = window.innerHeight;

        var ctx = c.getContext("2d");

        let rainDrops = [];
        let elements = document.getElementsByClassName("raindrop");
        let length = 30;
        let speed = 15;

        let angle = 90 * Math.PI / 180;
        let angleSin = Math.sin(angle);
        let angleCos = Math.cos(angle);

        let spawnInterval = setInterval(newDrop, 50);

        window.addEventListener("resize", onResize);

        document.addEventListener("visibilitychange", function () {
            if (document.hidden) {
                clearInterval(spawnInterval);
            } else {
                spawnInterval = setInterval(newDrop, 50);
            }
        });

        function RainDrop(x, y, angle) {
            this.x = x;
            this.y = y;
            rainDrops.push(this);
        }

        function newDrop() {
            for (let x = 0; x < 50; x++) {
                new RainDrop(Math.random() * c.width, -40 - 100 * Math.random(), angle);
            }
        }

        update();

        function update() {
            for (let x = 0; x < rainDrops.length; x++) {
                let drop = rainDrops[x];
                drop.x += speed * angleCos;
     .........完整代码请登录后点击上方下载按钮下载查看