js实现canvas炫酷彩色流体转动动画效果代码
代码语言:html
所属分类:粒子
代码描述:js实现canvas炫酷彩色流体转动动画效果代码
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">
<title></title>
<style>
body {
background: #111;
overflow: hidden;
}
canvas {
bottom: 0;
left: 0;
margin: auto;
position: absolute;
right: 0;
top: 0;
}
</style>
</head>
<body>
<div></div>
<script>
var $ = {};
$.Particle = function( opt ) {
this.radius = 7;
this.x = opt.x;
this.y = opt.y;
this.angle = opt.angle;
this.speed = opt.speed;
this.accel = opt.accel;
this.decay = 0.01;
this.life = 1;
};
$.Particle.prototype.step = function( i ) {
this.speed += this.accel;
this.x += Math.cos( this.angle ) * this.speed;
this.y += Math.sin( this.angle ) * this.speed;
this.angle += $.PI / 64;
this.accel *= 1.01;
this.life -= this.decay;
if( this.life <= 0 ) {
$.particles.splice( i, 1 );
}
};
$.Particle.prototype.draw = function( i ) {
.........完整代码请登录后点击上方下载按钮下载查看
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