欧美一级特黄大片做受成人-亚洲成人一区二区电影-激情熟女一区二区三区-日韩专区欧美专区国产专区

原生JS+HTML5實現(xiàn)跟隨鼠標(biāo)一起流動的粒子動畫效果-創(chuàng)新互聯(lián)

本文實例講述了原生JS+HTML5實現(xiàn)跟隨鼠標(biāo)一起流動的粒子動畫效果。分享給大家供大家參考，具體如下：

成都創(chuàng)新互聯(lián)公司主營什邡網(wǎng)站建設(shè)的網(wǎng)絡(luò)公司,主營網(wǎng)站建設(shè)方案,app軟件開發(fā),什邡h5成都微信小程序搭建,什邡網(wǎng)站營銷推廣歡迎什邡等地區(qū)企業(yè)咨詢 
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset=gbk>
<title>www.jb51.net 粒子效果演示</title>
<meta name="description" content="HTML5/canvas demo, 500 particles to play around with." />
<meta name="keywords" content="html5,canvas,javascript,particles,interactive,velocity,programming,flash" />
<style type="text/css">
html, body {
text-align: center;
margin:0;
padding:0;
background: #000000;
color: #666666;
line-height: 1.25em;
}
#outer {
position: absolute;
top: 50%;
left: 50%;
width: 1px;
height: 1px;
overflow: visible;
}
#canvasContainer {
position: absolute;
width: 1000px;
height: 560px;
top: -280px;
left: -500px;
}
canvas {
border: 1px solid #333333;
}
a {
color: #00CBCB;
text-decoration:none;
font-weight:bold;
}
a:hover {
color:#FFFFFF;
}
#output {
font-family: Arial, Helvetica, sans-serif;
font-size: 0.75em;
margin-top:4px;
}
#footer{
font-size: 0.6em;
font-family: Arial, Helvetica, sans-serif;
position: absolute;
bottombottom:8px;
width:98%;
}
</style>
</head>
<body>
<div id="outer">
<div id="canvasContainer">
<canvas id="mainCanvas" width="1000" height="560"></canvas>
<div id="output"></div>
</div>
</div>
<script type="text/javascript">
//javascript部分
(function(){
var PI_2 = Math.PI * 2;
var canvasW = 1000;
var canvasH = 560;
var numMovers = 600;
var friction = 0.96;
var movers = [];
var canvas;
var ctx;
var canvasDiv;
var outerDiv;
var mouseX;
var mouseY;
var mouseVX;
var mouseVY;
var prevMouseX;
var prevMouseY;
var isMouseDown;
function init(){
canvas = document.getElementById("mainCanvas");
if ( canvas.getContext ){
setup();
setInterval( run , 33 );
trace('你們好');
}
else{
trace("Sorry, needs a recent version of Chrome, Firefox, Opera, Safari, or Internet Explorer 9.");
}
}
function setup(){
outerDiv = document.getElementById("outer");
canvasDiv = document.getElementById("canvasContainer");
ctx = canvas.getContext("2d");
var i = numMovers;
while ( i-- ){
var m = new Mover();
m.x = canvasW * 0.5;
m.y = canvasH * 0.5;
m.vX = Math.cos(i) * Math.random() * 34;
m.vY = Math.sin(i) * Math.random() * 34;
movers[i] = m;
}
mouseX = prevMouseX = canvasW * 0.5;
mouseY = prevMouseY = canvasH * 0.5;
document.onmousedown = onDocMouseDown;
document.onmouseup = onDocMouseUp;
document.onmousemove = onDocMouseMove;
}
function run(){
ctx.globalCompositeOperation = "source-over";
ctx.fillStyle = "rgba(8,8,12,0.65)";
ctx.fillRect( 0 , 0 , canvasW , canvasH );
ctx.globalCompositeOperation = "lighter";
mouseVX = mouseX - prevMouseX;
mouseVY = mouseY - prevMouseY;
prevMouseX = mouseX;
prevMouseY = mouseY;
var toDist = canvasW * 0.86;
var stirDist = canvasW * 0.125;
var blowDist = canvasW * 0.5;
var Mrnd = Math.random;
var Mabs = Math.abs;
var i = numMovers;
while ( i-- ){
var m = movers[i];
var x = m.x;
var y = m.y;
var vX = m.vX;
var vY = m.vY;
var dX = x - mouseX;
var dY = y - mouseY;
var d = Math.sqrt( dX * dX + dY * dY ) || 0.001;
dX /= d;
dY /= d;
if ( isMouseDown ){
if ( d < blowDist ){
var blowAcc = ( 1 - ( d / blowDist ) ) * 14;
vX += dX * blowAcc + 0.5 - Mrnd();
vY += dY * blowAcc + 0.5 - Mrnd();
}
}
if ( d < toDist ){
var toAcc = ( 1 - ( d / toDist ) ) * canvasW * 0.0014;
vX -= dX * toAcc;
vY -= dY * toAcc;
}
if ( d < stirDist ){
var mAcc = ( 1 - ( d / stirDist ) ) * canvasW * 0.00026;
vX += mouseVX * mAcc;
vY += mouseVY * mAcc;
}
vX *= friction;
vY *= friction;
var avgVX = Mabs( vX );
var avgVY = Mabs( vY );
var avgV = ( avgVX + avgVY ) * 0.5;
if( avgVX < .1 ) vX *= Mrnd() * 3;
if( avgVY < .1 ) vY *= Mrnd() * 3;
var sc = avgV * 0.45;
sc = Math.max( Math.min( sc , 3.5 ) , 0.4 );
var nextX = x + vX;
var nextY = y + vY;
if ( nextX > canvasW ){
nextX = canvasW;
vX *= -1;
}
else if ( nextX < 0 ){
nextX = 0;
vX *= -1;
}
if ( nextY > canvasH ){
nextY = canvasH;
vY *= -1;
}
else if ( nextY < 0 ){
nextY = 0;
vY *= -1;
}
m.vX = vX;
m.vY = vY;
m.x = nextX;
m.y = nextY;
ctx.fillStyle = m.color;
ctx.beginPath();
ctx.arc( nextX , nextY , sc , 0 , PI_2 , true );
ctx.closePath();
ctx.fill();
}
}
function onDocMouseMove( e ){
var ev = e ? e : window.event;
mouseX = ev.clientX - outerDiv.offsetLeft - canvasDiv.offsetLeft;
mouseY = ev.clientY - outerDiv.offsetTop - canvasDiv.offsetTop;
}
function onDocMouseDown( e ){
isMouseDown = true;
return false;
}
function onDocMouseUp( e ){
isMouseDown = false;
return false;
}
function Mover(){
this.color = "rgb(" + Math.floor( Math.random()*255 ) + "," + Math.floor( Math.random()*255 ) + "," + Math.floor( Math.random()*255 ) + ")";
this.y = 0;
this.x = 0;
this.vX = 0;
this.vY = 0;
this.size = 1;
}
function rect( context , x , y , w , h ){
context.beginPath();
context.rect( x , y , w , h );
context.closePath();
context.fill();
}
function trace( str ){
document.getElementById("output").innerHTML = str;
}
window.onload = init;
})();
</script>
</body>
</html>

網(wǎng)站欄目：原生JS+HTML5實現(xiàn)跟隨鼠標(biāo)一起流動的粒子動畫效果-創(chuàng)新互聯(lián)
當(dāng)前鏈接：http://aaarwkj.com/article36/phcpg.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供標(biāo)簽優(yōu)化、服務(wù)器托管、品牌網(wǎng)站設(shè)計、網(wǎng)站設(shè)計公司、Google、域名注冊

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請盡快告知，我們將會在第一時間刪除。文章觀點不代表本網(wǎng)站立場，如需處理請聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時需注明來源： 創(chuàng)新互聯(lián)

營銷型網(wǎng)站建設(shè)
91超碰在线观看中文| 日本99精品视频10| 日韩成人一级片在线观看| 欧美日韩精品国产精品| 免费在线免费观看av| 国产亚洲欧美日韩看国产| 久久精品亚洲熟女av蜜謦| 亚洲欧美国产另类精品| 熟妇人妻精品一区二区三区颏| 色悠悠粉嫩一区二区三区| 国产日韩欧美国产精品| 国产福利三级在线观看| 国产欧美日韩精品久久久久久| 久久久国产精品视频一区| 久草亚洲一区二区三区av| 国产精品一区巨乳人妻| 国产亚洲av麻豆精品推荐| 两性色午夜视频免费网站| 久青青国产综合自拍视频在线观看 | 中文字幕一区二区三天| 四虎精品国产一区二区三区| 美女高潮久久久777| 在线观看高清免费国产| 国产三级三级三级三级| 久久国产成人精品免费看| 日韩精品熟女中文字幕| 色香蕉精品国产综合| 饥渴少妇高潮特殊按摩| 日韩精品人妻一区二区三区免费| 亚洲国产中日韩精品综合| 午夜视频免费在线观看| 欧美一区二区国产精品日韩| 在线观看中文字幕日韩精品| 国产麻豆精品二区视频| 亚洲国产日韩精品自拍av| 亚洲国产精品视频自拍| 欧美一区二区三区中文字幕| 国内自拍韩国资源在线| 亚洲精品一区二区成人影院| 麻豆国产传媒69国产| 亚洲国产视频不卡一区|