canvas烟花绽放美丽动画效果代码-html代码-BFW代码库

canvas烟花绽放美丽动画效果代码

代码语言：html

所属分类：粒子

代码描述：canvas烟花绽放美丽动画效果代码

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>
<head>
    <meta charset="UTF-8">

    <style>
        * {
            margin: 0;
            padding: 0;
            font-family: "微软雅黑";
        }
        .box {
            width: 80vw;
            margin: 0 auto;
            background: #EFEFEF;
            position: absolute;
            /*left: 0;*/
            left: calc(50% - 40vw);
            /*水平居中*/
            top: 0;
        }
        #name {
            padding: 60px;
            font-size: 40px;
            font-weight: 900;
            text-align: center;
            background: url(images/6.jpg) no-repeat center;
            /*以盒子内的文字作为裁剪区域向外裁剪，文字之外的区域都将被裁剪掉*/
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            /*文字颜色填充*/
        }
        h1 {
            letter-spacing: 3px;
            height: 70px;
            line-height: 70px;
            background: #ccc;
            text-align: center;
            -webkit-text-stroke: 1px #000;
            /*字体描边*/
            -webkit-text-fill-color: transparent;
            /*谷歌内核特有的属性*/
        }
        #bt {
            height: 50px;
            line-height: 50px;
            background: deepskyblue;
            text-align: center;
            color: #fff;
            cursor: pointer;
        }
  
    </style>
</head>
<body id="bodyid">
    <canvas id="canvas"></canvas>

    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/jquery-3.2.1.min.js"></script>

    <script>
        $(function() {
            var canvas = $('#canvas')[0];
            canvas.width = $(window).width();
            canvas.height = $(window).height();
            var ctx = canvas.getContext('2d');

            // resize
            $(window).on('resize', function() {
                canvas.width = $(window).width();
                canvas.height = $(window).height();
                ctx.fillStyle = '#000';
                ctx.fillRect(0, 0, canvas.width, canvas.height);
            });

            // init
            ctx.fillStyle = '#000';
            ctx.fillRect(0, 0, canvas.width, canvas.height);
            // objects
            var listFire = [];
            var listFirework = [];
            var fireNumber = 10;
            var center = {
                x: canvas.width / 2, y: canvas.height / 1.5
            };
            var range = 100;
            for (var i = 0; i < fireNumber; i++) {
                var fire = {
                    x: Math.random() * range / 2 - range / 4 + center.x,
                    y: Math.random() * range * 2 + canvas.height,
                    size: Math.random() + 0.5,
                    fill: '#fd1',
                    vx: Math.random() - 0.5,
                    vy: -(Math.random() + 4),
                    ax: Math.random() * 0.02 - 0.01,
                    far: Math.random() * range + (center.y - range)
                };
                fire.base = {
                    x: fire.x,
                    y: fire.y,
                    vx: fire.vx
                };
                //
                listFire.push(fire);
            }

            function randColor() {
                var r = Math.floor(Math.random() * 256);
                var g = Math.floor(Math.random() * 256);
                var b = Math.floor(Math.random() * 256);
                var color = 'rgb($r, $g, $b)';
                color = color.replace('$r', r);
                color = color.replace('$g', g);
                color = color.replace('$b', b);
                return color;
            }

            (function loop() {
                requestAnimationFrame(loop);
                update().........完整代码请登录后点击上方下载按钮下载查看