标签:制作 col near set target .com 动画特效 css 图像
绚丽的3D星空动画效果(纯CSS)
(3D星空动画可以用作网页背景,Gary为文本文字)
<!doctype html> <html lang="zh"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>jQuery和CSS3超绚丽的3D星空动画特效</title> <script src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script> <script src=‘js/prefixfree.min.js‘></script> <style class="cp-pen-styles"> p { position: fixed; top: 50%; left: 0; right: 0; text-align: center; transform: translateY(-50%); font-size: 40px; font-weight: 900; color: white; text-shadow: 0 0 50px black; text-transform: capitalize; font-family: ‘Roboto‘,‘Helvetica‘,‘Arial‘,sans-serif; letter-spacing: 5px; } body { background: radial-gradient(200% 100% at bottom center, #0070aa, #0b2570, #000035, #000); background: radial-gradient(220% 105% at top center, #000 10%, #000035 40%, #0b2570 65%, #0070aa); background-attachment: fixed; overflow: hidden; } @keyframes rotate { 0% { transform: perspective(400px) rotateZ(20deg) rotateX(-40deg) rotateY(0); } 100% { transform: perspective(400px) rotateZ(20deg) rotateX(-40deg) rotateY(-360deg); } } .stars { transform: perspective(500px); transform-style: preserve-3d; position: absolute; bottom: 0; perspective-origin: 50% 100%; left: 50%; animation: rotate 90s infinite linear; } .star { width: 2px; height: 2px; background: #F7F7B6; position: absolute; top: 0; left: 0; transform-origin: 0 0 -300px; transform: translate3d(0, 0, -300px); backface-visibility: hidden; } </style> </head> <body> <p>Gary</p> <div class="stars"> </div> <script src=‘js/stopExecutionOnTimeout.js‘></script> <script> $(document).ready(function () { var stars = 800; var $stars = $(‘.stars‘); var r = 800; for (var i = 0; i < stars; i++) { if (window.CP.shouldStopExecution(1)) { break; } var $star = $(‘<div/>‘).addClass(‘star‘); $stars.append($star); } window.CP.exitedLoop(1); $(‘.star‘).each(function () { var cur = $(this); var s = 0.2 + Math.random() * 1; var curR = r + Math.random() * 300; cur.css({ transformOrigin: ‘0 0 ‘ + curR + ‘px‘, transform: ‘ translate3d(0,0,-‘ + curR + ‘px) rotateY(‘ + Math.random() * 360 + ‘deg) rotateX(‘ + Math.random() * -50 + ‘deg) scale(‘ + s + ‘,‘ + s + ‘)‘ }); }); }); </script> </body> </html>
(使用了三个框架)
jquery.min
prefixfree.min
stopExecutionOnTimeout
实现过程
CSS
星空渐变背景
body {
background: radial-gradient(200% 100% at bottom center, #0070aa, #0b2570, #000035, #000);
background: radial-gradient(220% 105% at top center, #000 10%, #000035 40%, #0b2570 65%, #0070aa);
background-attachment: fixed;
overflow: hidden;
}
background:设置星空夜晚渐变效果(也不知道他们是怎么测试出来的)
background-attachment :指定一个固定的背景图像
fixed 背景图像是固定的
星空(一颗)
.star {
width: 2px;
height: 2px;
background: #F7F7B6;
position: absolute;
top: 0;
left: 0;
transform-origin: 0 0 -300px;
transform: translate3d(0, 0, -300px);
backface-visibility: hidden;
}
transform-origin:设置旋转元素的基点位置 传送门
x-axis:定义视图被置于 X 轴的何处
y-axis:定义视图被置于 Y 轴的何处
z-axis:定义视图被置于 Z 轴的何处
backface-visibility:隐藏被旋转的 div 元素的背面(影藏星星在星空下)
动态星空(多颗)
.stars {
transform: perspective(500px);
transform-style: preserve-3d;
position: absolute;
bottom: 0;
perspective-origin: 50% 100%;
left: 50%;
animation: rotate 90s infinite linear;
}
perspective 定义 3D 元素距视图的距离(星星在星空中的距离)
制作星空动画
@keyframes rotate {
0% {
transform: perspective(400px) rotateZ(20deg) rotateX(-40deg) rotateY(0);
}
100% {
transform: perspective(400px) rotateZ(20deg) rotateX(-40deg) rotateY(-360deg);
}
}
perspective():为 星星转换元素定义透视视图
rotateZ() :定义星星沿着 Z 轴的 3D 旋转 20deg
rotateX(): 定义星星沿着 X 轴的 3D 旋转 -40deg
rotateY(): 定义星星沿着 Y 轴的 3D 旋转
DOM
<script> $(document).ready(function () { var stars = 800; var $stars = $(‘.stars‘); var r = 800; for (var i = 0; i < stars; i++) { if (window.CP.shouldStopExecution(1)) { break; } var $star = $(‘<div/>‘).addClass(‘star‘); $stars.append($star); } window.CP.exitedLoop(1); $(‘.star‘).each(function () { var cur = $(this); var s = 0.2 + Math.random() * 1; var curR = r + Math.random() * 300; cur.css({ transformOrigin: ‘0 0 ‘ + curR + ‘px‘, transform: ‘ translate3d(0,0,-‘ + curR + ‘px) rotateY(‘ + Math.random() * 360 + ‘deg) rotateX(‘ + Math.random() * -50 + ‘deg) scale(‘ + s + ‘,‘ + s + ‘)‘ }); }); }); </script>
当 DOM(文档对象模型) 已经加载,并且页面(包括图像)已经完全呈现时,会发生 ready 事件
星星遍布夜空
addClass() :向被选元素添加一个或多个类名
append() :用于在列表末尾添加新的对象
transform-origin :设置旋转元素的基点位置
transformOrigin: ‘0 0 ‘ + curR + ‘px‘,
transform: ‘ translate3d(0,0,-‘ + curR + ‘px) rotateY(‘ + Math.random() * 360 + ‘deg) rotateX(‘ + Math.random() * -50 + ‘deg) scale(‘ + s + ‘,‘ + s + ‘)‘
transformOrigin:星空每次都绕着字体中间旋转
transform:随机出现新的星星
暂时不知道
window.CP.shouldStopExecution(1)
window.CP.exitedLoop(1)
有什么用。。。
O(∩_∩)O留着
标签:制作 col near set target .com 动画特效 css 图像
原文地址:https://www.cnblogs.com/1138720556Gary/p/9416956.html