效果展示

玩转CSS3的3D动画效果_html

基础知识

transform-style：启用 3D 模式

要利用 CSS3 实现 3D 的效果，最主要的就是借助 transform-style 属性。transform-style 只有两个值可以选择：

// 语法：
transform-style: flat|preserve-3d;
 
transform-style: flat; // 默认，子元素将不保留其 3D 位置
transform-style: preserve-3d; // 子元素将保留其 3D 位置。

当我们指定一个容器的 transform-style 的属性值为 preserve-3d 时，容器的后代元素便会具有 3D 效果，这样说有点抽象，也就是当前父容器设置了 preserve-3d 值后，它的子元素就可以相对于父元素所在的平面，进行 3D 变形操作。

transform-origin：设置变换操作中心点

transform-origin: x-axis y-axis z-axis; 

html中的坐标轴系统

玩转CSS3的3D动画效果_html_02

 

实现思路

两个正方体 + 动画

代码展示 
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body,
        html {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
            background: #2b3a42;
            display: flex;
        }

        .cube {
            display: inline-block;
            height: 100px;
            width: 100px;
            position: absolute;
            left: 50%;
            top: 50%;
            margin: -50px 0 0 -50px;
            transform-style: preserve-3d;
            transform-origin: 50px 50px;
            transform: rotateX(-33.3deg) rotateY(45deg);
            animation: fastspin 6s ease-in-out infinite 2s;
        }

        .cube div {
            display: inline-block;
            position: absolute;
            width: 100px;
            height: 100px;
            background-color: rgba(141, 214, 249, .5);
            border: 1px solid #fff;
        }

        .cube .top {
            transform: rotateX(90deg) translateZ(50px);
        }

        .cube .bottom {
            transform: rotateX(-90deg) translateZ(50px);
        }

        .cube .front {
            transform: translateZ(50px);
        }

        .cube .back {
            transform: rotateX(180deg) translateZ(50px);
        }

        .cube .right {
            transform: rotateY(90deg) translateZ(50px);
        }

        .cube .left {
            transform: rotateY(-90deg) translateZ(50px);
        }

        .cube-inner {
            display: inline-block;
            height: 50px;
            width: 50px;
            position: absolute;
            left: 50%;
            top: 50%;
            margin: -25px 0 0 -25px;
            transform-style: preserve-3d;
            transform-origin: center center;
            transform: rotateX(-33.3deg) rotateY(45deg);
            animation: slowspin 6s ease-in-out infinite 2s;
        }

        .cube-inner div {
            display: inline-block;
            position: absolute;
            width: 50px;
            height: 50px;
            background-color: rgba(141, 214, 249, .5);
            border: 1px solid #fff;
        }

        .cube-inner .top {
            transform: rotateX(90deg) translateZ(25px);
        }

        .cube-inner .bottom {
            transform: rotateX(-90deg) translateZ(25px);
        }

        .cube-inner .front {
            transform: translateZ(25px);
        }

        .cube-inner .back {
            transform: rotateX(180deg) translateZ(25px);
        }

        .cube-inner .right {
            transform: rotateY(90deg) translateZ(25px);
        }

        .cube-inner .left {
            transform: rotateY(-90deg) translateZ(25px);
        }

        @keyframes fastspin {
            0% {
                transform: rotateX(-33.3deg) rotateY(45deg);
            }

            100% {
                transform: rotateX(-33.3deg) rotateY(405deg);
            }
        }

        @keyframes slowspin {
            0% {
                transform: rotateX(-33.3deg) rotateY(45deg);
            }

            100% {
                transform: rotateX(-33.3deg) rotateY(-315deg);
            }
        }
    </style>
</head>

<body>
    <div>
        <div class="cube">
            <div class="top"></div>
            <div class="bottom"></div>
            <div class="front"></div>
            <div class="back"></div>
            <div class="right"></div>
            <div class="left"></div>
        </div>
        <div class="cube-inner">
            <div class="top"></div>
            <div class="bottom"></div>
            <div class="front"></div>
            <div class="back"></div>
            <div class="right"></div>
            <div class="left"></div>
        </div>
    </div>
</body>

</html>
透视变换

透视变化原理 详细解释请参考：css3系列之详解perspective - 杨耿 - 博客园 (cnblogs.com)

代码展示

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body,
        html {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
            background: #2b3a42;
            display: flex;
        }
         
        //写法一
        .father {
            position: relative;
            width: 100%;
            height: 200px;
            margin: auto;
            perspective: 200px;
            perspective-origin: center 120px;
        }
        //写法二
        .father {
            position: relative;
            width: 100%;
            height: 200px;
            margin: auto;
            transform-style: preserve-3d; //这个属性不能少 要不然 transform: rotateX(10deg); 不起作用
            perspective: 200px;
            transform: rotateX(10deg);
        }

        .cube {
            display: inline-block;
            height: 100px;
            width: 100px;
            position: absolute;
            left: 50%;
            top: 50%;
            margin: -50px 0 0 -50px;
            transform-style: preserve-3d;
            transform-origin: 50px 50px;
            transform: rotateX(-33.3deg) rotateY(45deg);
            animation: fastspin 6s ease-in-out infinite 2s;
        }

        .cube div {
            display: inline-block;
            position: absolute;
            width: 100px;
            height: 100px;
            background-color: rgba(141, 214, 249, .5);
            border: 1px solid #fff;
        }

        .cube .top {
            transform: rotateX(90deg) translateZ(50px);
        }

        .cube .bottom {
            transform: rotateX(-90deg) translateZ(50px);
        }

        .cube .front {
            transform: translateZ(50px);
        }

        .cube .back {
            transform: rotateX(180deg) translateZ(50px);
        }

        .cube .right {
            transform: rotateY(90deg) translateZ(50px);
        }

        .cube .left {
            transform: rotateY(-90deg) translateZ(50px);
        }

        .cube-inner {
            display: inline-block;
            height: 50px;
            width: 50px;
            position: absolute;
            left: 50%;
            top: 50%;
            margin: -25px 0 0 -25px;
            transform-style: preserve-3d;
            transform-origin: center center;
            transform: rotateX(-33.3deg) rotateY(45deg);
            animation: slowspin 6s ease-in-out infinite 2s;
        }

        .cube-inner div {
            display: inline-block;
            position: absolute;
            width: 50px;
            height: 50px;
            background-color: rgba(141, 214, 249, .5);
            border: 1px solid #fff;
        }

        .cube-inner .top {
            transform: rotateX(90deg) translateZ(25px);
        }

        .cube-inner .bottom {
            transform: rotateX(-90deg) translateZ(25px);
        }

        .cube-inner .front {
            transform: translateZ(25px);
        }

        .cube-inner .back {
            transform: rotateX(180deg) translateZ(25px);
        }

        .cube-inner .right {
            transform: rotateY(90deg) translateZ(25px);
        }

        .cube-inner .left {
            transform: rotateY(-90deg) translateZ(25px);
        }

        @keyframes fastspin {
            0% {
                transform: rotateX(-33.3deg) rotateY(45deg);
            }

            100% {
                transform: rotateX(-33.3deg) rotateY(405deg);
            }
        }

        @keyframes slowspin {
            0% {
                transform: rotateX(-33.3deg) rotateY(45deg);
            }

            100% {
                transform: rotateX(-33.3deg) rotateY(-315deg);
            }
        }
    </style>
</head>

<body>
    <div class="father">  //透视变化给父亲添加
        <div class="cube">
            <div class="top"></div>
            <div class="bottom"></div>
            <div class="front"></div>
            <div class="back"></div>
            <div class="right"></div>
            <div class="left"></div>
        </div>
        <div class="cube-inner">
            <div class="top"></div>
            <div class="bottom"></div>
            <div class="front"></div>
            <div class="back"></div>
            <div class="right"></div>
            <div class="left"></div>
        </div>
    </div>
</body>

</html>

效果展示 

玩转CSS3的3D动画效果_css3_03

总结
  1. 想使用CSS3实现 3D效果 必须的存在父子级元素
  2. 父级元素上的设置 transform-style: preserve-3d 子元素的3D变化才显示的出来
  3. 透视变化 perspective: 200px;   perspective-origin: center 120px; 不受 transform-style: preserve-3d影响，有没有他都可以实现透视变化