perspective-origin
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2022.
CSS 属性 perspective-origin
指定了观察者的位置,用作 perspective
属性的消失点。
尝试一下
语法
css
/* One-value syntax */
perspective-origin: x-position;
/* Two-value syntax */
perspective-origin: x-position y-position;
/* When both x-position and y-position are keywords,
the following is also valid */
perspective-origin: y-position x-position;
/* Global values */
perspective-origin: inherit;
perspective-origin: initial;
perspective-origin: unset;
值
- x-position
-
指定消失点的横坐标,其值有以下形式:
<length-percentage>
长度值或相对于元素宽度的百分比值,可为负值。left
, 关键字,0 值的简记。center
, 关键字,50% 的简记。right
, 关键字,100% 的简记。
- y-position
-
指定消失点的纵坐标,其值有以下形式:
<length-percentage>
长度值或相对于元素高度的百分比值,可为负值。top
, 关键字,0 值的简记。center
, 关键字,50% 的简记。bottom
, 关键字,100% 的简记。
形式语法
perspective-origin =
<position>
<position> =
[ left | center | right | top | bottom | <length-percentage> ] |
[ left | center | right ] && [ top | center | bottom ] |
[ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ] |
[ [ left | right ] <length-percentage> ] && [ [ top | bottom ] <length-percentage> ]
<length-percentage> =
<length> |
<percentage>
示例
修改 perspective origin
这个例子展示了带有常用 perspective-origin
值的立方体。
结果
HTML
html
<table>
<tbody>
<tr>
<th>
<code>perspective-origin: top left;</code>
</th>
<th>
<code>perspective-origin: top;</code>
</th>
<th>
<code>perspective-origin: top right;</code>
</th>
</tr>
<tr>
<td>
<div class="container">
<div class="cube potl">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube potm">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube potr">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
</tr>
<tr>
<th>
<code>perspective-origin: left;</code>
</th>
<th>
<code>perspective-origin: 50% 50%;</code>
</th>
<th>
<code>perspective-origin: right;</code>
</th>
</tr>
<tr>
<td>
<div class="container">
<div class="cube poml">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube pomm">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube pomr">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
</tr>
<tr>
<th>
<code>perspective-origin: bottom left;</code>
</th>
<th>
<code>perspective-origin: bottom;</code>
</th>
<th>
<code>perspective-origin: bottom right;</code>
</th>
</tr>
<tr>
<td>
<div class="container">
<div class="cube pobl">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube pobm">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube pobr">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
</tr>
</tbody>
</table>
CSS
css
/* Shorthand classes for perspective-origin values */
.potl {
perspective-origin: top left;
-webkit-perspective-origin: top left;
}
.potm {
perspective-origin: top;
-webkit-perspective-origin: top;
}
.potr {
perspective-origin: top right;
-webkit-perspective-origin: top right;
}
.poml {
perspective-origin: left;
-webkit-perspective-origin: left;
}
.pomm {
perspective-origin: 50% 50%;
-webkit-perspective-origin: 50% 50%;
}
.pomr {
perspective-origin: right;
-webkit-perspective-origin: right;
}
.pobl {
perspective-origin: bottom left;
-webkit-perspective-origin: bottom left;
}
.pobm {
perspective-origin: bottom;
-webkit-perspective-origin: bottom;
}
.pobr {
perspective-origin: bottom right;
-webkit-perspective-origin: bottom right;
}
/* Define the container div, the cube div, and a generic face */
.container {
width: 100px;
height: 100px;
margin: 24px;
border: none;
}
.cube {
width: 100%;
height: 100%;
backface-visibility: visible;
perspective: 300px;
transform-style: preserve-3d;
-webkit-backface-visibility: visible;
-webkit-perspective: 300px;
-webkit-transform-style: preserve-3d;
}
.face {
display: block;
position: absolute;
width: 100px;
height: 100px;
border: none;
line-height: 100px;
font-family: sans-serif;
font-size: 60px;
color: white;
text-align: center;
}
/* Define each face based on direction */
.front {
background: rgba(0, 0, 0, 0.3);
transform: translateZ(50px);
-webkit-transform: translateZ(50px);
}
.back {
background: rgba(0, 255, 0, 1);
color: black;
transform: rotateY(180deg) translateZ(50px);
-webkit-transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(196, 0, 0, 0.7);
transform: rotateY(90deg) translateZ(50px);
-webkit-transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(0, 0, 196, 0.7);
transform: rotateY(-90deg) translateZ(50px);
-webkit-transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(196, 196, 0, 0.7);
transform: rotateX(90deg) translateZ(50px);
-webkit-transform: rotateX(90deg) translateZ(50px);
}
.bottom {
background: rgba(196, 0, 196, 0.7);
transform: rotateX(-90deg) translateZ(50px);
-webkit-transform: rotateX(-90deg) translateZ(50px);
}
/* Make the table a little nicer */
th,
p,
td {
background-color: #eeeeee;
padding: 10px;
font-family: sans-serif;
text-align: left;
}
规范
Specification |
---|
CSS Transforms Module Level 2 # perspective-origin-property |
浏览器兼容性
BCD tables only load in the browser