js实现canvas圣诞节新年下大雪粒子动画效果代码-html代码-BFW代码库

js实现canvas圣诞节新年下大雪粒子动画效果代码

代码语言：html

所属分类：粒子

代码描述：js实现canvas圣诞节新年下大雪粒子动画效果代码，雪花比较大比较急。

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">
    <title>下雪</title>


    <style>
        body {
          background: url(//repo.bfw.wiki/bfwrepo/image/5fdd387b774b6.png) no-repeat;
          background-size: cover;
          display: block;
          width: 100%;
          height: 100%;
          min-height: 100vh;
          color: #fff;
          font-family: 'Verdana', sans-serif;
          overflow:hidden;
        }
        h1 {
          font-size: 46px;
          text-shadow: 0 4px 10px rgba(0, 0, 0, 0.7);
        }
        .mainContainer {
          position: absolute;
          top: 50%;
          left: 50%;
          -webkit-transform: translate(-50%, -50%);
                  transform: translate(-50%, -50%);
          width: 100%;
        }
        .title {
          text-align: center;
        }
    </style>
</head>

<body>

    <canvas id="canvas"></canvas>

    <div class="mainContainer">
        <h1 class="title">圣诞节快乐！</h1>
    </div>


    <script>
        var c = document.getElementById('canvas'), 
            $ = c.getContext("2d"),
        	 w = c.width = window.innerWidth, 
            h = c.height = window.innerHeight;
        
        function makeItSnow() {
          var snow,  
        		arr = [],
        		num = 1500,
        		tsc = 1, 
        		sp = 1;
        		sc = 1.3, 
        		t = 0, 
        		mv = 20, 
        		min = 1;
        	for (var i = 0; i < num; ++i) {
              snow = new Flake();
              snow.y = Math.random() * (h + 50);
              snow.x = Math.random() * w;
        .........完整代码请登录后点击上方下载按钮下载查看