使用css的animation和transform和transition可以实现简单的图片放大缩小，旋转，位移的效果，由此可以延伸的动画效果还是挺多的，比如图片慢慢放大，图片慢慢旋转并放大，图片慢慢变化位置等等，
抽奖动画效果图
实现的原理也很简单，就是通过使用动画animation和关键动画帧来实现的，可以使用缩放来进行平滑的过渡效果，下面是源码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<div class="center">
<div>抽奖效果</div>
<img
src="https://img-blog.csdnimg.cn/67fc9799ae8e48749e82cf70b179895b.png"
class="card"
/>
</div>
<style>
.center {
width: 500px;
margin: 0 auto;
text-align: center;
}
.card {
width: 260px;
height: 400px;
animation: showImg 3s linear 1;
}
@keyframes showImg {
0% {
transform: scale(0.1) rotate(0);
}
50% {
transform: scale(0.5) rotate(360deg);
}
100% {
transform: scale(1) rotate(720deg);
}
}
</style>
</body>
</html>
图片慢慢旋转动画
图片慢慢旋转是通过rotate来实现的，并且鼠标放上去之后，会有暂停的效果：下面的动图有卡顿的效果，实际情况非常丝滑
旋转图片的源代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<div class="wrap">
<div class="source"></div>
<div class="avatar"></div>
</div>
</body>
<style>
body {
background-color: black;
padding-top: 100px;
}
.wrap {
margin: 0 auto;
display: flex;
flex-direction: row;
justify-content: center;
align-items: center;
}
.source {
width: 100px;
height: 100px;
margin-right: 20px;
background-image: url('./assets/ball.png');
background-position: center;
background-size: 100% 100%;
animation: circle 1s linear infinite;
}
.avatar {
width: 100px;
height: 100px;
border-radius: 50%;
background-image: url('https://profile-avatar.csdnimg.cn/f6acd04828d84240afc2739fe039fd49_weixin_44786530.jpg!1');
background-position: center;
background-size: 100% 100%;
animation: circle 2s linear infinite;
}
.source:hover {
animation-play-state: paused;
}
.avatar:hover {
animation-play-state: paused;
}
@keyframes circle {
0% {
transform: rotate(0deg);
}
10% {
transform: rotate(36deg);
}
20% {
transform: rotate(72deg);
}
30% {
transform: rotate(108deg);
}
40% {
transform: rotate(144deg);
}
50% {
transform: rotate(180deg);
}
60% {
transform: rotate(216deg);
}
70% {
transform: rotate(252deg);
}
80% {
transform: rotate(288deg);
}
90% {
transform: rotate(324deg);
}
100% {
transform: rotate(360deg);
}
}
</style>
</html>
