创建立方体打开动画

Question

我有以下HTML和CSS代码来绘制多维数据集的顶部.所以它向下移动,我希望它能够像开放一样动画.我无法弄清楚如何转换顶部,以便它似乎打开.

我已经包含了多维数据集的整个代码.关于这一点,我希望顶部开放.

.pers500 {
  perspective: 500px;
  -webkit-perspective: 500px;
  -moz-perspective: 500px;
}
/* Define the container div, the cube div, and a generic face */

.container {
  width: 25%;
  margin: 0 auto;
  margin-top: 2em;
  border: none;
  animation-name: moveDown;
  animation-duration: 2s;
  animation-timing-function: linear;
  transform: translate(0px, 110px);
}
.cube {
  width: 70%;
  height: 70%;
  backface-visibility: visible;
  perspective-origin: 150% 150%;
  transform-style: preserve-3d;
  -webkit-backface-visibility: visible;
  -webkit-perspective-origin: 150% 150%;
  -webkit-transform-style: preserve-3d;
}
.face {
  display: block;
  position: absolute;
  border: none;
  line-height: 100px;
  font-family: sans-serif;
  font-size: 60px;
  color: white;
  text-align: center;
}
/* Define each face based on direction */

.front {
  width: 3.64em;
  height: 3.43em;
  background-color: rgba(0, 255, 0, 0.7);
  transform: translateZ(50px) translateX(171px) translateY(222px);
  -webkit-transform: translateZ(50px) translateX(171px) translateY(222px);
  -moz-transform: translateZ(50px) translateX(171px) translateY(222px);
}
.left {
  width: 2em;
  height: 3.4em;
  background-color: rgba(0, 0, 255, 0.7);
  margin: 70px;
  transform: skewY(40deg) translateZ(50px);
  -webkit-transform: skewY(40deg) translateZ(50px) translateY(65px) translateX(-20px);
  -moz-transform: skewY(40deg) translateZ(50px) translateY(62px) translateX(-20px);
}
.top {
  width: 3.65em;
  height: 1.7em;
  background-color: rgba(255, 0, 0, 0.7);
  margin: 100px;
  transform: skewX(50deg) translateZ(50px) translateX(-14px) translateY(20px);
  -webkit-transform: skewX(50deg) translateZ(50px) translateX(-14px) translateY(20px);
  ;
  -moz-transform: skewX(50deg) translateZ(50px) translateX(-14px) translateY(20px);
  ;
  animation-name: openTop;
  animation-duration: 2s;
  animation-timing-function: linear;
}
@-webkit-keyframes moveDown {
  0% {
    transform: translate(0px, 10px);
  }
  50% {
    transform: translate(0px, 55px);
  }
  100% {
    transform: translate(0px, 110px);
  }
}
@keyframes moveDown {
  0% {
    transform: translate(0px, 10px);
  }
  50% {
    transform: translate(0px, 55px);
  }
  100% {
    transform: translate(0px, 110px);
  }
}
@keyframes openTop {
  /*0% {transform:rotateX(30deg);}
	50% {transform:rotateX(30deg);}
	100% {transform:rotateX(30deg);} commented code here doesn't work*/
}

<div class="container">
  <div class="cube pers500">
    <div class="face front"></div>
    <div class="face top"></div>
    <br>
    <br>
    <br>
    <div class="face left"></div>
  </div>
</div>

Answer 1

要使立方体打开，您首先需要将transform-origin属性（如另一个答案中提到的）设置为top。.face.top此设置将使旋转时顶部保持固定。然后您需要使用添加旋转rotateX()。这将旋转顶面以产生打开效果。请注意，该transform属性应包含完整的转换列表，以便正确打开。rotateX()您不能只在动画中添加单独的元素。

.pers500 {
  perspective: 500px;
}
/* Define the container div, the cube div, and a generic face */

.container {
  width: 25%;
  margin: 0 auto;
  margin-top: 2em;
  border: none;
  animation-name: moveDown;
  animation-duration: 2s;
  animation-timing-function: linear;
  transform: translate(0px, 110px);
}
.cube {
  width: 70%;
  height: 70%;
  backface-visibility: visible;
  perspective-origin: 150% 150%;
  transform-style: preserve-3d;
}
.face {
  display: block;
  position: absolute;
  border: none;
  line-height: 100px;
  font-family: sans-serif;
  font-size: 60px;
  color: white;
  text-align: center;
  border: 1px solid brown; /* just for testing */
}
/* Define each face based on direction */

.front {
  width: 3.64em;
  height: 3.43em;
  background-color: rgba(0, 255, 0, 0.7);
  transform: translateZ(50px) translateX(171px) translateY(222px);
}
.left {
  width: 2em;
  height: 3.43em;
  background-color: rgba(0, 0, 255, 0.7);
  margin: 70px;
  transform: skewY(40deg) translateZ(50px) translateY(64px) translateX(-20px);
}
.top {
  width: 3.65em;
  height: 1.69em;
  background-color: rgba(255, 0, 0, 0.7);
  margin: 100px;
  transform: skewX(50deg) translateZ(50px) translateX(-74px) translateY(20px) rotateX(0deg);
  transform-origin: top;
  animation-name: openTop;
  animation-duration: 2s;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}
@-webkit-keyframes moveDown {
  0% {
    transform: translate(0px, 10px);
  }
  50% {
    transform: translate(0px, 55px);
  }
  100% {
    transform: translate(0px, 110px);
  }
}
@keyframes moveDown {
  0% {
    transform: translate(0px, 10px);
  }
  50% {
    transform: translate(0px, 55px);
  }
  100% {
    transform: translate(0px, 110px);
  }
}
@keyframes openTop {
  0% {
    transform: skewX(50deg) translateZ(50px) translateX(-74px) translateY(20px) rotateX(0deg);
  }
  100% {
    transform: skewX(50deg) translateZ(50px) translateX(-74px) translateY(20px) rotateX(200deg);
  }
}

<div class="container">
  <div class="cube pers500">
    <div class="face front"></div>
    <div class="face top"></div>
    <br>
    <br>
    <br>
    <div class="face left"></div>
  </div>
</div>

笔记：

• 设置 atransform-origin将影响演示中顶面的位置，因此您使用的值translateX()和translateY()顶面上的值需要像上面的演示一样进行修改。
• 应始终在标准属性之前添加属性的供应商前缀版本，以便面向未来。
• 为了简单起见，我删除了上面代码片段中的供应商前缀版本。