js canvas烟花动画效果代码-html代码-BFW代码库

js canvas烟花动画效果代码

代码语言：html

所属分类：动画

代码描述：js canvas烟花动画效果代码

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 dir="ltr" lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />

<style>
/* basic styles for black background and crosshair cursor */
body {
        background: #000;
        margin: 0;
}

canvas {
        cursor: crosshair;
        display: block;
}
</style>
</head>

<canvas id="canvas">Canvas is not supported in your browser.</canvas>
<script>
// when animating on canvas, it is best to use requestAnimationFrame instead of setTimeout or setInterval
// not supported in all browsers though and sometimes needs a prefix, so we need a shim
window.requestAnimFrame = ( function() {
        return window.requestAnimationFrame ||
                                window.webkitRequestAnimationFrame ||
                                window.mozRequestAnimationFrame ||
                                function( callback ) {
                                        window.setTimeout( callback, 1000 / 60 );
                                };
})();

// now we will setup our basic variables for the demo
var canvas = document.getElementById( 'canvas' ),
                ctx = canvas.getContext( '2d' ),
                // full screen dimensions
                cw = window.innerWidth,
                ch = window.innerHeight,
                // firework collection
                fireworks = [],
                // particle collection
                particles = [],
                // starting hue
                hue = 120,
                // when launching fireworks with a click, too many get launched at once without a limiter, one launch per 5 loop ticks
                limiterTotal = 5,
                limiterTick = 0,
                // this will time the auto launches of fireworks, one launch per 80 loop ticks
                timerTotal = 80,
                timerTick = 0,
                mousedown = false,
                /.........完整代码请登录后点击上方下载按钮下载查看