js实现canvas跟随鼠标曲线背景动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：背景

代码描述：js实现canvas跟随鼠标曲线背景动画效果代码

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 http-equiv="Content-Type" content="text/html; charset=utf-8" />

<style type="text/css"> 
* {
	margin: 0; 
	padding: 0;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	-ms-box-sizing: border-box;
	-o-box-sizing: border-box;
	box-sizing: border-box;
}
html, body {
	margin: 0;
	padding: 0; 
	color: #fefeff;
	-webkit-font-smoothing: antialiased;
	font-smoothing: antialiased;
}
body {font-family:"Microsoft YaHei";
	background: rgb(8,5,16);
	overflow:hidden;
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-khtml-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}

h1 {
	font: 2.75em ;
	font-weight: 400;
	letter-spacing: 0.35em;
	text-shadow: 0 0 25px rgba(254,254,255,0.85);
}
h2 {
	font: 1.45em ;
	font-weight: 400;
	letter-spacing: 0.5em;
	text-shadow: 0 0 25px rgba(254,254,255,0.85);
	text-transform: lowercase;
}

[class^="letter"] {
	-webkit-transition: opacity 3s ease;
	-moz-transition: opacity 3s ease;
	transition: opacity 3s ease;
}
.letter-0  { transition-delay: 0.2s; }
.letter-1  { transition-delay: 0.4s; }
.letter-2  { transition-delay: 0.6s; }
.letter-3  { transition-delay: 0.8s; }
.letter-4  { transition-delay: 1.0s; }
.letter-5  { transition-delay: 1.2s; }
.letter-6  { transition-delay: 1.4s; }
.letter-7  { transition-delay: 1.6s; }
.letter-8  { transition-delay: 1.8s; }
.letter-9  { transition-delay: 2.0s; }
.letter-10 { transition-delay: 2.2s; }
.letter-11 { transition-delay: 2.4s; }
.letter-12 { transition-delay: 2.6s; }
.letter-13 { transition-delay: 2.8s; }
.letter-14 { transition-delay: 3.0s; }

h1, h2 {
	visibility: hidden;
	-webkit-transform: translate3d(0, 0, 0);
	-moz-transform: translate3d(0, 0, 0);
	transform: translate3d(0, 0, 0);
}	
h1.transition-in,
h2.transition-in {
	visibility: visible;
}
h1 [class^="letter"], 
h2 [class^="letter"] {
	opacity: 0;
}
h1.transition-in [class^="letter"],
h2.transition-in [class^="letter"] {
	opacity: 1;
}

#container {
display: table;
position: absolute;
z-index: 20;
width: 100%;
height: 100%;
text-align: center;
cursor: none;
left: 15px;
}
#container > div {
	display: table-cell;
	vertical-align: middle;
}
#container p {
	position: absolute;
	width: 100%;
	left: 0;
	bottom: 25px;
	font-size: 0.8em;
	letter-spacing: 0.1em;
	font-weight: 300;
	color: #76747a;
	-webkit-font-smoothing: subpixel-antialiased;
	font-smoothing: subpixel-antialiased; 
}
#container p strong {
color: #b3abc5;
font-size: 5em;
}
#container p span {
	font-size: 0.75em;
	padding: 0 2px;
}

#canvas {
	position: absolute;
	z-index: 10;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	cursor: none;
}

#stats { 
	position: absolute; 
	z-index: 10; 
	left: 10px; 
	top: 10px; 
}

.dg.ac {
	z-index: 100 !important;
}

#container div p strong a {
color: #999;
font-size: 0.5em;
}
body,td,th {

}
a:link {
text-decoration: none;
}
a:visited {
text-decoration: none;
}
a:hover {
text-decoration: none;
}
a:active {
text-decoration: none;
}
</style>
</head>

<body ondragstart="window.event.returnValue=false" oncontextmenu="window.event.returnValue=false" onselectstart="event.returnValue=false">

<div id="container">

	<div>
		<h1 id="h1">代码也是一种艺术</h1>
		<h2 id="h2">code.bfw.wiki</h2>		
	</div>

</div>

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



<script>
var Stats=function(){var e=Date.now(),t=e,i=0,n=1/0,r=0,s=0,o=1/0,a=0,l=0,h=0,c=document.createElement("div");c.id="stats",c.addEventListener("mousedown",function(e){e.preventDefault(),v(++h%2)},!1),c.style.cssText="width:80px;opacity:0.9;cursor:pointer";var u=document.createElement("div");u.id="fps",u.style.cssText="padding:0 0 3px 3px;text-align:left;background-color:#002",c.appendChild(u);var d=document.createElement("div");d.id="fpsText",d.style.cssText="color:#0ff;font-size:9px;font-weight:bold;line-height:15px",d.innerHTML="FPS",u.appendChild(d);var p=document.createElement("div");for(p.id="fpsGraph",p.style.cssText="position:relative;width:74px;height:30px;background-color:#0ff",u.appendChild(p);74>p.children.length;){var f=document.createElement("span");f.style.cssText="width:1px;height:30px;float:left;background-color:#113",p.appendChild(f)}var m=document.createElement("div");m.id="ms",m.style.cssText="padding:0 0 3px 3px;text-align:left;background-color:#020;display:none",c.appendChild(m);var g=document.createElement("div");g.id="msText",g.style.cssText="color:#0f0;;font-size:9px;font-weight:bold;line-height:15px",g.innerHTML="MS",m.appendChild(g);var y=document.createElement("div");for(y.id="msGraph",y.style.cssText="position:relative;width:74px;height:30px;background-color:#0f0",m.appendChild(y);74>y.children.length;){var f=document.createElement("span");f.style.cssText="width:1px;height:30px;float:left;background-color:#131",y.appendChild(f)}var v=function(e){switch(h=e){case 0:u.style.display="block",m.style.display="none";break;case 1:u.style.display="none",m.style.display="block"}},b=function(e,t){var i=e.appendChild(e.firstChild);i.style.height=t+"px"};return{REVISION:11,domElement:c,setMode:v,begin:function(){e=Date.now()},end:function(){var h=Date.now();return i=h-e,n=Math.min(n,i),r=Math.max(r,i),g.textContent=i+" MS ("+n+"-"+r+")",b(y,Math.min(30,30-30*(i/200))),l++,h>t+1e3&&(s=Math.round(1e3*l/(h-t)),o=Math.min(o,s),a=Math.max(a,s),d.textContent=s+" FPS ("+o+"-"+a+")",b(p,Math.min(30,30-30*(s/100))),t=h,l=0),h},update:function(){e=this.end()}}};
</script>
<script>

;(function(window) {

var ctx,
	hue,
	logo,
	form,
	buffer,
	target = {},
	tendrils = [],
	settings = {};

settings.debug = true;
settings.friction = 0.5;
settings.trails = 20;
settings.size = 50;
settings.dampening = 0.25;
settings.tension = 0.98;

Math.TWO_PI = Math.PI * 2;

// ========================================================================================
// Oscillator
// ----------------------------------------------------------------------------------------

function Oscillator(options) {
	this.init(options || {});
}

Oscillator.prototype = (function() {
	
	var value = 0;
	
	return {
		
		init: function(options) {
			this.phase = options.phase || 0;
			this.offset = options.offset || 0;
			this.frequency = options.frequency || 0.001;
			this.amplitude = options.amplitude || 1;
		},
		
		update: function() {
			this.phase += this.frequency;
			value = this.offset + Math.sin(this.phase) * this.amplitude;
			return value;
		},
		
		value: function() {
			return value;
		}
	};
		
})();

// ========================================================================================
// Tendril
// ----------------------------------------------------------------------------------------

function T.........完整代码请登录后点击上方下载按钮下载查看