<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>html5炫酷粒子特效canvas动画</title>
<style>
@import url(https://fonts.googleapis.com/css?family=Montserrat);
@import url(https://fonts.googleapis.com/css?family=Open+Sans:400,700);
body {
overflow: hidden;
}
h1 {
margin: 0;
font-family: 'Montserrat', sans-serif;
font-size: 4em;
color: #333;
-webkit-text-shadow: 0 2px 1px rgba(0, 0, 0, 0.6), 0 0 2px rgba(0, 0, 0, 0.7);
-moz-text-shadow: 0 2px 1px rgba(0, 0, 0, 0.6), 0 0 2px rgba(0, 0, 0, 0.7);
text-shadow: 0 2px 1px rgba(0, 0, 0, 0.6), 0 0 2px rgba(0, 0, 0, 0.7);
word-spacing: 16px;
}
p {
font-family: 'Open Sans', sans-serif;
font-size: 1.4em;
font-weight: bold;
color: #222;
text-shadow: 0 0 40px #FFFFFF, 0 0 30px #FFFFFF, 0 0 20px #FFFFFF;
}
.container {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
background: url('');
background-size: cover;
}
.wrapper {
width: 100%;
min-height: 100%;
height: auto;
display: table;
}
.content {
display: table-cell;
vertical-align: middle;
}
.item {
width: auto;
height: auto;
margin: 0 auto;
text-align: center;
padding: 8px;
}
canvas {
position: absolute;
z-index: 0;
left: 0px;
top: 0px;
width: 100%;
}
.background {
display: flex;
z-index: 3;
height: 100vh;
flex-direction: column;
align-content: center;
justify-content: center;
font-family: "Text Me One", sans-serif;
}
@media only screen and (min-width: 800px) {
h1 {
font-size: 6em;
}
p {
font-size: 1.6em;
}
}
@media only screen and (max-width: 320px) {
h1 {
font-size: 2em;
}
p {
font-size: 1.2em;
}
}
</style>
</head>
<body>
<canvas id="background" width="1280" height="642"></canvas>
<div class="container">
<div class="wrapper">
<div class="content">
<div class="item">
<!-- Place your content here to have it be centered vertically and horizontally -->
<h1>即将上线</h1>
<p>网站正在建设中.</p>
<p>如有任何问题清联系我们 : <b>bootstrapmb@gmail.com</b></p>
</div>
</div>
</div>
</div>
<script type="text/javascript">
const particles = [];
for (let i = 0; i < 100; i++) {
particles.push({
x: Math.random() > 0.5 ? 0 : window.innerWidth,
y: window.innerHeight / 2,
vx: Math.random() * 2 - 1,
vy: Math.random() * 2 - 1,
history: [],
size: 4 + Math.random() * 6,
color:
Math.random() > 0.5
? "#000000"
: Math.random() > 0.5 ? "#FF0000" : "#FFFF00"
});
}
const mouse = {
x: window.innerWidth / 2,
y: window.innerHeight / 2
};
const canvas = document.getElementById("background");
if (canvas && canvas.getContext) {
var context = canvas.getContext("2d");
Initialize();
}
function Initialize() {
canvas.addEventListener("mousemove", MouseMove, false);
window.addEventListener("resize", ResizeCanvas, false);
TimeUpdate();
context.beginPath();
ResizeCanvas();
}
function TimeUpdate(e) {
context.clearRect(0, 0, window.innerWidth, window.innerHeight);
for (let i = 0; i < particles.length; i++) {
particles[i].x += particles[i].vx;
particles[i].y += particles[i].vy;
if (particles[i].x > window.innerWidth) {
particles[i].vx = -1 - Math.random();
} else if (particles[i].x < 0) {
particles[i].vx = 1 + Math.random();
} else {
particles[i].vx *= 1 + Math.random() * 0.005;
}
if (particles[i].y > window.innerHeight) {
particles[i].vy = -1 - Math.random();
} else if (particles[i].y < 0) {
particles[i].vy = 1 + Math.random();
} else {
particles[i].vy *= 1 + Math.random() * 0.005;
}
context.strokeStyle = particles[i].color;
context.beginPath();
for (var j = 0; j < particles[i].history.length; j++) {
context.lineTo(particles[i].history[j].x, particles[i].history[j].y);
}
context.stroke();
particles[i].history.push({
x: particles[i].x,
y: particles[i].y
});
if (particles[i].history.length > 45) {
particles[i].history.shift();
}
for (var j = 0; j < particles[i].history.length; j++) {
particles[i].history[j].x +=
0.01 * (mouse.x - particles[i].history[j].x) / (45 / j);
particles[i].history[j].y +=
0.01 * (mouse.y - particles[i].history[j].y) / (45 / j);
}
let distanceFactor = DistanceBetween(mouse, particles[i]);
distanceFactor = Math.pow(
Math.max(Math.min(10 - distanceFactor / 10, 10), 2),
0.5
);
context.fillStyle = particles[i].color;
context.beginPath();
context.arc(
particles[i].x,
particles[i].y,
particles[i].size * distanceFactor,
0,
Math.PI * 2,
true
);
context.closePath();
context.fill();
}
requestAnimationFrame(TimeUpdate);
}
function MouseMove(e) {
mouse.x = e.layerX;
mouse.y = e.layerY;
}
function Draw(x, y) {
context.strokeStyle = "#ff0000";
context.lineWidth = 4;
context.lineTo(x, y);
context.stroke();
}
function ResizeCanvas(e) {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
}
function DistanceBetween(p1, p2) {
const dx = p2.x - p1.x;
const dy = p2.y - p1.y;
return Math.sqrt(dx * dx + dy * dy);
}
</script>
</body>
</html>
