一.什么是2D和3D
1.什么是2D和3D
2D就是一个平面,只有宽度和高度,没有厚度
3D就是一个立体,有宽度和高度,还有厚度
默认情况下所有的元素都是呈2D展现的
2.如何让某个元素呈3D展现
和透视一样,想看到某个元素的3d效果,只需要给他的父元素添加一个transform-style属性,然后设置为preserve-3d即可
3.transform-style的取值:
flat:默认取值,二维的;
preserve-3d:3D效果;
<htmllang="en"><head><metacharset="UTF-8"><title>106-3D转换模块</title><style>
*{margin:0;padding:0;}
.father{width:200px;height:200px;
background-color:red;border:1pxsolid#000;margin:100pxauto;
perspective:500px;transform-style:preserve-3d;
transform:rotateY(0deg);
}.son{width:100px;height:100px;background-color:blue;border:1pxsolid#000;margin:0auto;margin-top:50px;transform:rotateY(45deg);}</style></head><body><pclass="father"><pclass="son"></p></p></body></html>
二.正方体(有瑕疵,页面文字显示有问题)
<htmllang="en"><head><metacharset="UTF-8"><title>107-3D转换模块-正方体</title><style>*{margin:0;padding:0;}ul{width:200px;height:200px;border:1pxsolid#000;box-sizing:border-box;margin:100pxauto;position:relative;transform:rotateY(0deg)rotateX(0deg);transform-style:preserve-3d;}ulli{list-style:none;width:200px;height:200px;font-size:60px;text-align:center;line-height:200px;position:absolute;left:0;top:0;}ulli:nth-child(1){background-color:red;transform:translateX(-100px)rotateY(90deg);}ulli:nth-child(2){background-color:green;transform:translateX(100px)rotateY(90deg);}ulli:nth-child(3){background-color:blue;transform:translateY(-100px)rotateX(90deg);}ulli:nth-child(4){background-color:yellow;transform:translateY(100px)rotateX(90deg);}ulli:nth-child(5){background-color:purple;transform:translateZ(-100px);}ulli:nth-child(6){background-color:pink;transform:translateZ(100px);}</style></head><body><ul><li>1</li><li>2</li><li>3</li><li>4</li><li>5</li><li>6</li></ul></body></html>
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