js实现canvas多彩变色火苗燃烧动画效果代码
代码语言:html
所属分类:动画
代码描述:js实现canvas多彩变色火苗燃烧动画效果代码
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
<html>
<head>
<style>
body {
background: #111;
}
canvas {
display: block;
left: 50%;
margin: -150px 0 0 -150px;
position: absolute;
top: 50%;
}
</style>
</head>
<body >
<canvas id="c" width="300" height="300"></canvas><script>
var c = document.getElementById('c'),
ctx = c.getContext('2d'),
cw = c.width = 300,
ch = c.height = 300,
parts = [],
partCount = 200,
partsFull = false,
hueRange = 50,
globalTick = 0,
rand = function(min, max) {
return Math.floor((Math.random() * (max - min + 1)) + min);
};
var Part = function() {
this.reset();
};
Part.prototype.reset = function() {
this.startRadius = rand(1, 25);
this.radius = this.startRadius;
this.x = cw/2 + (rand(0, 6) - 3);
this.y = 250;
this.vx = 0;
this.vy = 0;
this.hue = rand(globalTick - hueRange, globalTick + hueRange);
this.saturation = rand(50, 100);
this.lightness = rand(20, 70);
this.startAlpha = rand(1, 10) / 100;
this.alpha .........完整代码请登录后点击上方下载按钮下载查看
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