transform的3D动画

3D形变函数会创建一个合成层来启用GPU硬件加速

translate

      transform: translateY(100px);
      transform: translateX(100px);
      transform: translateZ(100px);
      transform: translate3d(100px,100px,100px); // x,y,z的简写

rotate

deg弧度

 transform: rotateX(-40deg);

在这里插入图片描述

   transform: rotateY(40deg);

3D透视 perspective

一般是给父元素设置的，如果是子元素或单个子元素，可以使用函数perspective()。
设置透视后，距离越远元素越小，距离越小，元素越大。
设置透视后对z轴的操作才有效。

 .box {
        width: 100px;
        height: 100px;
        background-color: rebeccapurple;
        transform: perspective(300px) rotateY(-40deg);
      }

scale

  // 设置百分比不会生效
   transform: scaleY(1.5);
   transform: scaleX(1.5);
   transform: scaleZ(1.5);

3D空间 transform-style

设置子元素是定位在3D空间的还是展示在2D平面的
两个值:
flat:位于平面中,
preserve-3d:位于3D空间中。

 <style>
      .box {
        width: 100px;
        height: 100px;
        perspective: 100px;
        background-color: aqua;
        transform-style: preserve-3d;
      }
      .item {
        width: 100px;
        height: 100px;
        background-color: rgb(200, 196, 204);
        transform: rotateX(40deg) translateX(10px);
      }
    </style>
    <div class="box">
      <div class="item"></div>
    </div>

画一个正方体

例子：
1.

 <style>
      .box {
        position: relative;
        width: 100px;
        height: 100px;
        background-color: aqua;
        transform-style: preserve-3d;
        transform: rotateX(-33deg) rotateY(45deg); //正方体的测试图
      }
      .item {
        position: absolute;
        top: 0;
        left: 0;
        width: 100px;
        height: 100px;
        background-color: rgb(200, 196, 204);
      }
    </style>
     <div class="box">
      <div class="item">1</div>
      <div class="item">2</div>
      <div class="item">3</div>
      <div class="item">4</div>
      <div class="item">5</div>
      <div class="item">6</div>
    </div>

2.

  .top {
        background-color: rgb(41, 38, 38);
        transform: rotateX(90deg);
      }

 .top {
        background-color: rgb(41, 38, 38);
        transform: rotateX(90deg) translateZ(50px);
      }

 .top {
        background-color: rgb(41, 38, 38);
        transform: rotateX(90deg) translateZ(50px);
      }
      .bottom {
        background-color: rgb(73, 39, 39);
        transform: rotateX(-90deg) translateZ(50px);
      }

3.`

 .right {
        background-color: rgb(45, 39, 73);
        transform: rotateY(90deg) translateZ(50px);
      }

   .left {
        background-color: rgb(45, 39, 73);
        transform: rotateY(-90deg) translateZ(50px);
      }
      .right {
        background-color: rgb(45, 39, 73);
        transform: rotateY(90deg) translateZ(50px);
      }

 .back {
        background-color: rgb(23, 23, 23);
        transform: rotateY(-180deg) translateZ(50px);
      }

 <style>
      .box {
        position: relative;
        width: 100px;
        height: 100px;
        margin: 200px;

        transform-style: preserve-3d;
        transform: rotateX(-33deg) rotateY(45deg);
      }
      .item {
        position: absolute;
        top: 0;
        left: 0;
        width: 100px;
        height: 100px;
      }

      .top {
        background-color: rgb(41, 38, 38);
        transform: rotateX(90deg) translateZ(50px);
      }
      .bottom {
        background-color: rgb(73, 39, 39);
        transform: rotateX(-90deg) translateZ(50px);
      }
      .left {
        background-color: rgb(45, 39, 73);
        transform: rotateY(-90deg) translateZ(50px);
      }
      .right {
        background-color: rgb(38, 100, 85);
        transform: rotateY(90deg) translateZ(50px);
      }
      .font {
        background-color: rgb(73, 73, 39);
        transform: rotateY(0deg) translateZ(50px);
      }
      .back {
        background-color: rgb(23, 23, 23);
        transform: rotateY(-180deg) translateZ(50px);
      }
    </style>
     <div class="box">
      <div class="item top">1</div>
      <div class="item bottom">2</div>
      <div class="item left">3</div>
      <div class="item right">4</div>
      <div class="item font">5</div>
      <div class="item back">6</div>
    </div>

3D背面可见性- backface-visibility

backface-visibility 设置后，当元素的背面是否可见，元素背向观察者时是否可见。
visible:背向时可见。
hidden:背向时不可见。

 <style>
    .box {
      width: 200px;
      height: 200px;
      margin: 200px;

      background-color: antiquewhite;
      padding-inline-end: 200px;
    }
    .item {
      width: 100px;
      height: 100px;
      background-color: rgb(60, 67, 95);
      transform: rotateY(180deg);
      animation: rote 6s linear infinite;
      backface-visibility: hidden;
    }
    @keyframes rote {
      0% {
        transform: rotateY(0deg);
      }
      100% {
        transform: rotateY(360deg);
      }
    }
  </style>
</head>
<body>
  <div class="box">
    <div class="item"></div>
  </div>
</body>

webpack logo的例子

  <style>
      .box {
        margin: 200px;
        position: relative;
      }
      .box-item {
        position: absolute;
        top: 50%;
        left: 50%;
        width: 50px;
        height: 50px;
        margin: -25px 0 0 -25px;
        transform-style: preserve-3d;
        transform: rotateX(-33deg) rotateY(45deg);
        animation: items 6s ease-in-out infinite;
      }
      .item {
        width: 50px;
        height: 50px;
        position: absolute;
        top: 0;
        left: 0;
        border: 1px solid white;
      }

      @keyframes items {
        0% {
          transform: rotateX(-33deg) rotateY(45deg);
        }
        50%,
        100% {
          transform: rotateX(-33deg) rotateY(405deg);
        }
      }
      .top {
        background-color: rgba(168, 220, 245, 0.5);
        transform: rotateX(90deg) translateZ(25px);
      }
      .bottom {
        background-color: rgba(168, 220, 245, 0.5);
        transform: rotateX(-90deg) translateZ(25px);
      }
      .left {
        background-color: rgba(168, 220, 245, 0.5);
        transform: rotateY(-90deg) translateZ(25px);
      }
      .right {
        background-color: rgba(168, 220, 245, 0.5);
        transform: rotateY(90deg) translateZ(25px);
      }
      .font {
        background-color: rgba(168, 220, 245, 0.5);
        transform: rotateY(0deg) translateZ(25px);
      }
      .back {
        background-color: rgba(168, 220, 245, 0.5);
        transform: rotateY(-180deg) translateZ(25px);
      }
      .box-container {
        position: absolute;
        top: 50%;
        left: 50%;
        width: 100px;
        height: 100px;
        margin: -50px 0 0 -50px;
        transform-style: preserve-3d;
        transform: rotateX(-33deg) rotateY(45deg);
        animation: containers 6s ease-in-out infinite;
      }
      .container {
        position: absolute;
        top: 0;
        left: 0;
        width: 100px;
        height: 100px;
        border: 1px solid white;
      }
      @keyframes containers {
        0% {
          transform: rotateX(-33deg) rotateY(45deg);
        }
        50%,
        100% {
          transform: rotateX(-33deg) rotateY(-315deg);
        }
      }
      .container-top {
        background-color: rgba(141, 214, 249, 0.5);
        transform: rotateX(90deg) translateZ(50px);
      }
      .container-bottom {
        background-color: rgba(141, 214, 249, 0.5);
        transform: rotateX(-90deg) translateZ(50px);
      }
      .container-left {
        background-color: rgba(141, 214, 249, 0.5);
        transform: rotateY(-90deg) translateZ(50px);
      }
      .container-right {
        background-color: rgba(141, 214, 249, 0.5);
        transform: rotateY(90deg) translateZ(50px);
      }
      .container-font {
        background-color: rgba(141, 214, 249, 0.5);
        transform: rotateY(0deg) translateZ(50px);
      }
      .container-back {
        background-color: rgba(141, 214, 249, 0.5);
        transform: rotateY(-180deg) translateZ(50px);
      }
    </style>
  </head>
  <body>
    <div class="box">
      <div class="box-item">
        <div class="item top"></div>
        <div class="item bottom"></div>
        <div class="item left"></div>
        <div class="item right"></div>
        <div class="item font"></div>
        <div class="item back"></div>
      </div>
      <div class="box-container">
        <div class="container container-top"></div>
        <div class="container container-bottom"></div>
        <div class="container container-left"></div>
        <div class="container container-right"></div>
        <div class="container container-font"></div>
        <div class="container container-back"></div>
      </div>
    </div>
  </body>

<style>
      .box {
        margin: 200px;
        position: relative;
        width: 500px;
        height: 500px;
        background-image: url("1.png");
        background-position: center;
        background-size: contain;
      }
      .box1 {
        position: absolute;
        top: 170px;
        left: 43px;
        animation: b1 3s ease-in infinite;
      }
      @keyframes b1 {
        0% {
          opacity: 1;
          transform: translateY(0px);
        }
        50%,
        100% {
          opacity: 0;
          transform: translateY(-50px);
        }
      }
      .box2 {
        position: absolute;
        top: 267px;
        left: 111px;
        animation: b2 3s ease-in infinite;
      }
      @keyframes b2 {
        0% {
          transform: translateX(0) translateY(0);
        }
        50% {
          transform: translateX(40px) translateY(-23px);
        }
        70%,
        100% {
          transform: translateX(50px) translateY(-20px);
        }
      }
    </style>
    <div class="box">
      <img src="./img/2.png" alt="" class="box1" />
      <img src="./img/3.png" alt="" class="box2" />
    </div>

结果